Version: 187.1.1

They're verbose now

MSBuild/Robust.Engine.Version.props

@@ -1,4 +1,4 @@
 <Project>
 
-    <!-- This file automatically reset by Tools/version.py -->
+    <!-- This file automatically reset by Tools/version.py -->
 

RELEASE-NOTES.md

@@ -54,6 +54,342 @@ END TEMPLATE-->
 *None yet*
 
 
+## 187.1.1
+
+### Bugfixes
+
+* Revert physics solver job to fix crashes until box2d v3 rolls around.
+* Don't RegenerateContacts if the body isn't collidable to avoid putting non-collidable proxies on the movebuffer.
+
+
+## 187.1.0
+
+### Bugfixes
+
+* Apply default audio params to all audio sources not just non-buffered ones.
+* Avoid re-allocating broadphase job every tick and maybe fix a rare nullref for it.
+
+
+## 187.0.0
+
+### New features
+
+* Improved error message for network failing to initialize.
+
+### Bugfixes
+
+* Fix not being able to add multiple PVS session overrides in a single tick without overwriting each one. This should fix issues with audio filters.
+
+### Other
+
+* Changed toolshed initialisation logs to verbose.
+
+
+## 186.1.0
+
+### New features
+
+* Add public method to get PVS session overrides for a specific session.
+
+### Internal
+
+* Add temporary audio debugging.
+
+
+## 186.0.0
+
+### Breaking changes
+
+* Global audio is now stored on its own map to avoid contamination issues with nullspace.
+
+### Bugfixes
+
+* Fix MIDIs playing cross-map
+* Only dispose audio on game closure and don't stop playing if it's disposed elsewhere i.e. MIDIs.
+
+
+## 185.2.0
+
+### Bugfixes
+
+* Bandaid deleted MIDI source entities spamming velocity error logs.
+
+### Other
+
+* Reverted MIDI audio not updating every frame due to lock contention with the MIDI renderer for now.
+
+
+## 185.1.1
+
+### Bugfixes
+
+* Fix Z-Offset for audio not being applied on initialization.
+
+### Internal
+
+* Flag some internal queries as approximate to avoid unnecessary AABB checks. Some of these are already covered off with TestOverlap calls and the rest will need updating to do so in a future update.
+
+
+## 185.1.0
+
+### New features
+
+* Audio listener's velocity is set using the attached entity's velocity rather than ignored.
+
+### Bugfixes
+
+* Fix imprecision on audio position
+
+
+## 185.0.0
+
+### Breaking changes
+
+* Added a flag for grid-based audio rather than implicitly doing it.
+
+### New features
+
+* Added IRobustJob and IParallelRobustJob (which splits out into IRobustJob). These can be passed to ParallelManager for work to be run on the threadpool without relying upon Task.Run / Parallel.For which can allocate significantly more. It also has conveniences such as being able to specify batch sizing via the interface implementation.
+
+
+## 184.1.0
+
+### New features
+
+* Add API to get gain / volume for a provided value on SharedAudioSystem.
+* Make GetOcclusion public for AudioSystem.
+* Add SharedAudioSystem.SetGain to complement SharedAudioSystem.SetVolume
+
+
+## 184.0.1
+
+### Bugfixes
+
+* Update MIDI position and occlusion every frame instead of at set intervals.
+* Fix global audio not being global.
+
+
+## 184.0.0
+
+### Internal
+
+* Add RobustMemoryManager with RecyclableIOMemoryStream to significantly reduce MsgState allocations until better memory management is implemented.
+
+
+## 183.0.0
+
+### Breaking changes
+
+* Audio rework has been re-merged now that the issues with packaging on server have been rectified (thanks PJB!)
+* Reverted Arch pending further performance work on making TryGetComponent competitive with live.
+
+
+## 182.1.1
+
+### Internal
+
+* Remove AggressiveInlining from Arch for debugging.
+
+
+## 182.1.0
+
+### New features
+
+* Add IRobustRandom.SetSeed
+
+### Other
+
+* Add Arch.TrimExcess() back to remove excess archetypes on map load / EntityManager flush.
+
+
+## 182.0.0
+
+### Breaking changes
+
+* Add EntityUid's generation / version to the hashcode.
+
+
+## 181.0.2
+
+### Bugfixes
+
+* Fix exceptions from having too many lights on screen and causing the game to go black.
+* Fix components having events raised in ClientGameStateManager before fully set and causing nullable reference exceptions.
+* Replace tile intersection IEnumerables with TileEnumerator internally. Also made it public for external callers that wish to avoid IEnumerable.
+
+
+## 181.0.1
+
+### Bugfixes
+
+* Fix the non-generic HasComp and add a test for good measure.
+
+
+## 181.0.0
+
+### Breaking changes
+
+- Arch is merged refactoring how components are stored on engine. There's minimal changes on the API end to facilitate component nullability with much internal refactoring.
+
+
+## 180.2.1
+
+
+## 180.2.0
+
+### New features
+
+* Add EnsureEntity variants that take in collections.
+* Add more MapSystem helper methods.
+
+### Internal
+
+* Cache some more PVS data to avoid re-allocating every tick.
+
+
+## 180.1.0
+
+### New features
+
+* Add the map name to lsmap.
+* Add net.pool_size to CVars to control the message data pool size in Lidgren and to also toggle pooling.
+
+### Bugfixes
+
+* Fix physics contraints causing enormous heap allocations.
+* Fix potential error when writing a runtime log.
+* Fix shape lookups for non-hard fixtures in EntityLookupSystem from 180.0.0
+
+
+## 180.0.0
+
+### Breaking changes
+
+* Removed some obsolete methods from EntityLookupSystem.
+
+### New features
+
+* PhysicsSystem.TryGetNearest now supports chain shapes.
+* Add IPhysShape methods to EntityLookupSystem rather than relying on AABB checks.
+* Add some more helper methods to SharedTransformSystem.
+* Add GetOrNew dictionary extension that also returns a bool on whether the key existed.
+* Add a GetAnchoredEntities overload that takes in a list.
+
+### Other
+
+* Use NetEntities for the F3 debug panel to align with command usage.
+
+
+## 179.0.0
+
+### Breaking changes
+
+* EyeComponent.Eye is no longer nullable
+
+### New features
+
+* Light rendering can now be enabled or disable per eye.
+
+### Bugfixes
+
+* Deserializing old maps with empty grid chunks should now just ignore those chunks.
+
+### Other
+
+* UnknownPrototypeException now also tells you the prototype kind instead of just the unkown ID.
+* Adding or removing networked components while resetting predicted entities now results in a more informative exception.
+
+
+## 178.0.0
+
+### Breaking changes
+
+* Most methods in ActorSystem have been moved to ISharedPlayerManager. 
+* Several actor/player related components and events have been moved to shared.
+
+### New features
+
+* Added `NetListAsArray<T>.Value` to the sandbox whitelist
+
+
+## 177.0.0
+
+### Breaking changes
+
+* Removed toInsertXform and added containerXform in SharedContainerSystem.CanInsert.
+* Removed EntityQuery parameters from SharedContainerSystem.IsEntityOrParentInContainer.
+* Changed the signature of ContainsEntity in SharedTransformSystem to use Entity<T>.
+* Removed one obsoleted SharedTransformSystem.AnchorEntity method.
+* Changed signature of SharedTransformSystem.SetCoordinates to use Entity<T>.
+
+### New features
+
+* Added more Entity<T> query methods.
+* Added BeforeApplyState event to replay playback.
+
+### Bugfixes
+
+* Fixed inverted GetAllMapGrids map id check.
+* Fixed transform test warnings.
+* Fixed PlacementManager warnings.
+* Fixed reparenting bug for entities that are being deleted.
+
+### Other
+
+* Changed VerticalAlignment of RichTextLabel to Center to be consistent with Label.
+* Changed PVS error log to be a warning instead.
+* Marked insert and remove container methods as obsolete, added container system methods to replace them.
+* Marked TransformComponent.MapPosition as obsolete, added GetMapCoordinates system method to replace it.
+
+### Internal
+
+* Moved TryGetUi/TryToggleUi/ToggleUi/TryOpen/OpenUi/TryClose/CloseUi methods from UserInterfaceSystem to SharedUserInterfaceSystem.
+
+
+## 176.0.0
+
+### Breaking changes
+
+* Reverted audio rework temporarily until packaging is fixed.
+* Changes to Robust.Packaging to facilitate Content.Packaging ports from the python packaging scripts.
+
+### New features
+
+* Add a cvar for max game state buffer size.
+* Add an overload for GetEntitiesInRange that takes in a set.
+
+### Bugfixes
+
+* Fix PVS initial list capacity always being 0.
+* Fix replay lerp error spam.
+
+
+## 175.0.0
+
+### Breaking changes
+
+* Removed static SoundSystem.Play methods.
+* Moved IPlayingAudioStream onto AudioComponent and entities instead of an abstract stream.
+* IResourceCache is in shared and IClientResourceCache is the client version to use for textures.
+* Default audio attenuation changed from InverseDistanceClamped to LinearDistanceClamped.
+* Removed per-source audio attenuation.
+
+### New features
+
+* Add preliminary support for EFX Reverb presets + auxiliary slots; these are also entities.
+* Audio on grid entities is now attached to the grid.
+
+### Bugfixes
+
+* If an audio entity comes into PVS range its track will start at the relevant offset and not the beginning.
+* Z-Axis offset is considered for ReferenceDistance / MaxDistance for audio.
+* Audio will now pause if the attached entity is paused.
+
+### Other
+
+* Changed audio Z-Axis offset from -5m to -1m.
+
+
 ## 174.0.0
 
 ### Breaking changes

Resources/EnginePrototypes/Audio/audio_entities.yml

@@ -0,0 +1,5 @@
+- type: entity
+  id: Audio
+  name: Audio
+  description: Audio entity used by engine
+  save: false

Resources/Locale/en-US/commands.ftl

@@ -561,3 +561,7 @@ cmd-vfs_ls-hint-path = <path>
 
 cmd-reloadtiletextures-desc = Reloads the tile texture atlas to allow hot reloading tile sprites
 cmd-reloadtiletextures-help = Usage: reloadtiletextures
+
+cmd-audio_length-desc = Shows the length of an audio file
+cmd-audio_length-help = Usage: audio_length { cmd-audio_length-arg-file-name }
+cmd-audio_length-arg-file-name = <file name>

Robust.Client/Animations/AnimationTrackPlaySound.cs

@@ -1,8 +1,10 @@
 using System;
 using System.Collections.Generic;
+using Robust.Client.Audio;
 using Robust.Client.GameObjects;
 using Robust.Shared.Audio;
 using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
 using Robust.Shared.Player;
 
 namespace Robust.Client.Animations
@@ -37,7 +39,12 @@ namespace Robust.Client.Animations
 
                 var keyFrame = KeyFrames[keyFrameIndex];
 
-                SoundSystem.Play(keyFrame.Resource, Filter.Local(), entity, keyFrame.AudioParamsFunc.Invoke());
+                var audioParams = keyFrame.AudioParamsFunc.Invoke();
+                var audio = new SoundPathSpecifier(keyFrame.Resource)
+                {
+                    Params = audioParams
+                };
+                IoCManager.Resolve<IEntitySystemManager>().GetEntitySystem<AudioSystem>().PlayEntity(audio, Filter.Local(), entity, true);
             }
 
             return (keyFrameIndex, playingTime);

Robust.Client/Audio/AudioManager.ALDisposeQueues.cs

@@ -0,0 +1,58 @@
+using System.Collections.Concurrent;
+using OpenTK.Audio.OpenAL;
+
+namespace Robust.Client.Audio;
+
+internal partial class AudioManager
+{
+    // Used to track audio sources that were disposed in the finalizer thread,
+    // so we need to properly send them off in the main thread.
+    private readonly ConcurrentQueue<(int sourceHandle, int filterHandle)> _sourceDisposeQueue = new();
+    private readonly ConcurrentQueue<(int sourceHandle, int filterHandle)> _bufferedSourceDisposeQueue = new();
+    private readonly ConcurrentQueue<int> _bufferDisposeQueue = new();
+
+    public void FlushALDisposeQueues()
+    {
+        // Clear out finalized audio sources.
+        while (_sourceDisposeQueue.TryDequeue(out var handles))
+        {
+            OpenALSawmill.Debug("Cleaning out source {0} which finalized in another thread.", handles.sourceHandle);
+            if (IsEfxSupported) RemoveEfx(handles);
+            AL.DeleteSource(handles.sourceHandle);
+            _checkAlError();
+            _audioSources.Remove(handles.sourceHandle);
+        }
+
+        // Clear out finalized buffered audio sources.
+        while (_bufferedSourceDisposeQueue.TryDequeue(out var handles))
+        {
+            OpenALSawmill.Debug("Cleaning out buffered source {0} which finalized in another thread.", handles.sourceHandle);
+            if (IsEfxSupported) RemoveEfx(handles);
+            AL.DeleteSource(handles.sourceHandle);
+            _checkAlError();
+            _bufferedAudioSources.Remove(handles.sourceHandle);
+        }
+
+        // Clear out finalized audio buffers.
+        while (_bufferDisposeQueue.TryDequeue(out var handle))
+        {
+            AL.DeleteBuffer(handle);
+            _checkAlError();
+        }
+    }
+
+    internal void DeleteSourceOnMainThread(int sourceHandle, int filterHandle)
+    {
+        _sourceDisposeQueue.Enqueue((sourceHandle, filterHandle));
+    }
+
+    internal void DeleteBufferedSourceOnMainThread(int bufferedSourceHandle, int filterHandle)
+    {
+        _bufferedSourceDisposeQueue.Enqueue((bufferedSourceHandle, filterHandle));
+    }
+
+    internal void DeleteAudioBufferOnMainThread(int bufferHandle)
+    {
+        _bufferDisposeQueue.Enqueue(bufferHandle);
+    }
+}

Robust.Client/Audio/AudioManager.Public.cs

@@ -0,0 +1,353 @@
+using System;
+using System.IO;
+using System.Numerics;
+using System.Threading;
+using OpenTK.Audio.OpenAL;
+using Robust.Client.Audio.Sources;
+using Robust.Client.Graphics;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.AudioLoading;
+using Robust.Shared.Audio.Sources;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Audio;
+
+internal partial class AudioManager
+{
+    private float _zOffset;
+
+    public void SetZOffset(float offset)
+    {
+        _zOffset = offset;
+    }
+
+    /// <inheritdoc />
+    public float GetAttenuationGain(float distance, float rolloffFactor, float referenceDistance, float maxDistance)
+    {
+        switch (_attenuation)
+        {
+            case Attenuation.LinearDistance:
+                return 1 - rolloffFactor * (distance - referenceDistance) / (maxDistance - referenceDistance);
+            case Attenuation.LinearDistanceClamped:
+                distance = MathF.Max(referenceDistance, MathF.Min(distance, maxDistance));
+                return 1 - rolloffFactor * (distance - referenceDistance) / (maxDistance - referenceDistance);
+            default:
+                // TODO: If you see this you can implement
+                throw new NotImplementedException();
+        }
+    }
+
+    public void InitializePostWindowing()
+    {
+        _gameThread = Thread.CurrentThread;
+        InitializeAudio();
+    }
+
+    public void Shutdown()
+    {
+        DisposeAllAudio();
+
+        if (_openALContext != ALContext.Null)
+        {
+            ALC.MakeContextCurrent(ALContext.Null);
+
+            ALC.DestroyContext(_openALContext);
+        }
+
+        if (_openALDevice != IntPtr.Zero)
+        {
+            ALC.CloseDevice(_openALDevice);
+        }
+    }
+
+    /// <inheritdoc/>
+    public void SetVelocity(Vector2 velocity)
+    {
+        AL.Listener(ALListener3f.Velocity, velocity.X, velocity.Y, 0f);
+    }
+
+    /// <inheritdoc/>
+    public void SetPosition(Vector2 position)
+    {
+        AL.Listener(ALListener3f.Position, position.X, position.Y, _zOffset);
+    }
+
+    /// <inheritdoc/>
+    public void SetRotation(Angle angle)
+    {
+        var vec = angle.ToVec();
+
+        // Default orientation: at: (0, 0, -1)  up: (0, 1, 0)
+        var at = new OpenTK.Mathematics.Vector3(0f, 0f, -1f);
+        var up = new OpenTK.Mathematics.Vector3(vec.Y, vec.X, 0f);
+        AL.Listener(ALListenerfv.Orientation, new []{0, 0, -1, vec.X, vec.Y, 0});
+        AL.Listener(ALListenerfv.Orientation, ref at, ref up);
+    }
+
+    /// <inheritdoc/>
+    public AudioStream LoadAudioOggVorbis(Stream stream, string? name = null)
+    {
+        var vorbis = AudioLoaderOgg.LoadAudioData(stream);
+
+        var buffer = AL.GenBuffer();
+
+        ALFormat format;
+        // NVorbis only supports loading into floats.
+        // If this becomes a problem due to missing extension support (doubt it but ok),
+        // check the git history, I originally used libvorbisfile which worked and loaded 16 bit LPCM.
+        if (vorbis.Channels == 1)
+        {
+            format = ALFormat.MonoFloat32Ext;
+        }
+        else if (vorbis.Channels == 2)
+        {
+            format = ALFormat.StereoFloat32Ext;
+        }
+        else
+        {
+            throw new InvalidOperationException("Unable to load audio with more than 2 channels.");
+        }
+
+        unsafe
+        {
+            fixed (float* ptr = vorbis.Data.Span)
+            {
+                AL.BufferData(buffer, format, (IntPtr) ptr, vorbis.Data.Length * sizeof(float),
+                    (int) vorbis.SampleRate);
+            }
+        }
+
+        _checkAlError();
+
+        var handle = new ClydeHandle(_audioSampleBuffers.Count);
+        _audioSampleBuffers.Add(new LoadedAudioSample(buffer));
+        var length = TimeSpan.FromSeconds(vorbis.TotalSamples / (double) vorbis.SampleRate);
+        return new AudioStream(handle, length, (int) vorbis.Channels, name, vorbis.Title, vorbis.Artist);
+    }
+
+    /// <inheritdoc/>
+    public AudioStream LoadAudioWav(Stream stream, string? name = null)
+    {
+        var wav = AudioLoaderWav.LoadAudioData(stream);
+
+        var buffer = AL.GenBuffer();
+
+        ALFormat format;
+        if (wav.BitsPerSample == 16)
+        {
+            if (wav.NumChannels == 1)
+            {
+                format = ALFormat.Mono16;
+            }
+            else if (wav.NumChannels == 2)
+            {
+                format = ALFormat.Stereo16;
+            }
+            else
+            {
+                throw new InvalidOperationException("Unable to load audio with more than 2 channels.");
+            }
+        }
+        else if (wav.BitsPerSample == 8)
+        {
+            if (wav.NumChannels == 1)
+            {
+                format = ALFormat.Mono8;
+            }
+            else if (wav.NumChannels == 2)
+            {
+                format = ALFormat.Stereo8;
+            }
+            else
+            {
+                throw new InvalidOperationException("Unable to load audio with more than 2 channels.");
+            }
+        }
+        else
+        {
+            throw new InvalidOperationException("Unable to load wav with bits per sample different from 8 or 16");
+        }
+
+        unsafe
+        {
+            fixed (byte* ptr = wav.Data.Span)
+            {
+                AL.BufferData(buffer, format, (IntPtr) ptr, wav.Data.Length, wav.SampleRate);
+            }
+        }
+
+        _checkAlError();
+
+        var handle = new ClydeHandle(_audioSampleBuffers.Count);
+        _audioSampleBuffers.Add(new LoadedAudioSample(buffer));
+        var length = TimeSpan.FromSeconds(wav.Data.Length / (double) wav.BlockAlign / wav.SampleRate);
+        return new AudioStream(handle, length, wav.NumChannels, name);
+    }
+
+    /// <inheritdoc/>
+    public AudioStream LoadAudioRaw(ReadOnlySpan<short> samples, int channels, int sampleRate, string? name = null)
+    {
+        var fmt = channels switch
+        {
+            1 => ALFormat.Mono16,
+            2 => ALFormat.Stereo16,
+            _ => throw new ArgumentOutOfRangeException(
+                nameof(channels), "Only stereo and mono is currently supported")
+        };
+
+        var buffer = AL.GenBuffer();
+        _checkAlError();
+
+        unsafe
+        {
+            fixed (short* ptr = samples)
+            {
+                AL.BufferData(buffer, fmt, (IntPtr) ptr, samples.Length * sizeof(short), sampleRate);
+            }
+        }
+
+        _checkAlError();
+
+        var handle = new ClydeHandle(_audioSampleBuffers.Count);
+        var length = TimeSpan.FromSeconds((double) samples.Length / channels / sampleRate);
+        _audioSampleBuffers.Add(new LoadedAudioSample(buffer));
+        return new AudioStream(handle, length, channels, name);
+    }
+
+    public void SetMasterVolume(float newVolume)
+    {
+        AL.Listener(ALListenerf.Gain, newVolume);
+    }
+
+    public void SetAttenuation(Attenuation attenuation)
+    {
+        switch (attenuation)
+        {
+            case Attenuation.NoAttenuation:
+                AL.DistanceModel(ALDistanceModel.None);
+                break;
+            case Attenuation.InverseDistance:
+                AL.DistanceModel(ALDistanceModel.InverseDistance);
+                break;
+            case Attenuation.InverseDistanceClamped:
+                AL.DistanceModel(ALDistanceModel.InverseDistanceClamped);
+                break;
+            case Attenuation.LinearDistance:
+                AL.DistanceModel(ALDistanceModel.LinearDistance);
+                break;
+            case Attenuation.LinearDistanceClamped:
+                AL.DistanceModel(ALDistanceModel.LinearDistanceClamped);
+                break;
+            case Attenuation.ExponentDistance:
+                AL.DistanceModel(ALDistanceModel.ExponentDistance);
+                break;
+            case Attenuation.ExponentDistanceClamped:
+                AL.DistanceModel(ALDistanceModel.ExponentDistanceClamped);
+                break;
+            default:
+                throw new ArgumentOutOfRangeException($"No implementation to set {attenuation.ToString()} for DistanceModel!");
+        }
+
+        _attenuation = attenuation;
+        OpenALSawmill.Info($"Set audio attenuation to {attenuation.ToString()}");
+    }
+
+    internal void RemoveAudioSource(int handle)
+    {
+        _audioSources.Remove(handle);
+    }
+
+    internal void RemoveBufferedAudioSource(int handle)
+    {
+        _bufferedAudioSources.Remove(handle);
+    }
+
+    public IAudioSource? CreateAudioSource(AudioStream stream)
+    {
+        var source = AL.GenSource();
+
+        if (!AL.IsSource(source))
+        {
+            OpenALSawmill.Error("Failed to generate source. Too many simultaneous audio streams? {0}", Environment.StackTrace);
+            return null;
+        }
+
+        // ReSharper disable once PossibleInvalidOperationException
+        // TODO: This really shouldn't be indexing based on the ClydeHandle...
+        AL.Source(source, ALSourcei.Buffer, _audioSampleBuffers[(int) stream.ClydeHandle!.Value].BufferHandle);
+
+        var audioSource = new AudioSource(this, source, stream);
+        _audioSources.Add(source, new WeakReference<BaseAudioSource>(audioSource));
+        ApplyDefaultParams(audioSource);
+        return audioSource;
+    }
+
+    public IBufferedAudioSource CreateBufferedAudioSource(int buffers, bool floatAudio=false)
+    {
+        var source = AL.GenSource();
+
+        if (!AL.IsSource(source))
+        {
+            OpenALSawmill.Error("Failed to generate source. Too many simultaneous audio streams? {0}", Environment.StackTrace);
+        }
+
+        // ReSharper disable once PossibleInvalidOperationException
+
+        var audioSource = new BufferedAudioSource(this, source, AL.GenBuffers(buffers), floatAudio);
+        _bufferedAudioSources.Add(source, new WeakReference<BufferedAudioSource>(audioSource));
+        ApplyDefaultParams(audioSource);
+        return audioSource;
+    }
+
+    private void ApplyDefaultParams(IAudioSource source)
+    {
+        source.MaxDistance = AudioParams.Default.MaxDistance;
+        source.Pitch = AudioParams.Default.Pitch;
+        source.ReferenceDistance = AudioParams.Default.ReferenceDistance;
+        source.RolloffFactor = AudioParams.Default.RolloffFactor;
+    }
+
+    /// <inheritdoc />
+    public void StopAllAudio()
+    {
+        foreach (var source in _audioSources.Values)
+        {
+            if (source.TryGetTarget(out var target))
+            {
+                target.Playing = false;
+            }
+        }
+
+        foreach (var source in _bufferedAudioSources.Values)
+        {
+            if (source.TryGetTarget(out var target))
+            {
+                target.Playing = false;
+            }
+        }
+    }
+
+    public void DisposeAllAudio()
+    {
+        // TODO: Do we even need to stop?
+        foreach (var source in _audioSources.Values)
+        {
+            if (source.TryGetTarget(out var target))
+            {
+                target.Dispose();
+            }
+        }
+
+        _audioSources.Clear();
+
+        foreach (var source in _bufferedAudioSources.Values)
+        {
+            if (source.TryGetTarget(out var target))
+            {
+                target.Dispose();
+            }
+        }
+
+        _bufferedAudioSources.Clear();
+    }
+}

Robust.Client/Audio/AudioManager.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections.Generic;
+using System.Runtime.CompilerServices;
+using System.Threading;
+using OpenTK.Audio.OpenAL;
+using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using Robust.Client.Audio.Sources;
+using Robust.Shared;
+using Robust.Shared.Audio;
+using Robust.Shared.Configuration;
+using Robust.Shared.Log;
+using Robust.Shared.Utility;
+
+namespace Robust.Client.Audio;
+
+internal sealed partial class AudioManager : IAudioInternal
+{
+    [Shared.IoC.Dependency] private readonly IConfigurationManager _cfg = default!;
+    [Shared.IoC.Dependency] private readonly ILogManager _logMan = default!;
+
+    private Thread? _gameThread;
+
+    private ALDevice _openALDevice;
+    private ALContext _openALContext;
+
+    private readonly List<LoadedAudioSample> _audioSampleBuffers = new();
+
+    private readonly Dictionary<int, WeakReference<BaseAudioSource>> _audioSources =
+        new();
+
+    private readonly Dictionary<int, WeakReference<BufferedAudioSource>> _bufferedAudioSources =
+        new();
+
+    private readonly HashSet<string> _alcDeviceExtensions = new();
+    private readonly HashSet<string> _alContextExtensions = new();
+    private Attenuation _attenuation;
+
+    public bool HasAlDeviceExtension(string extension) => _alcDeviceExtensions.Contains(extension);
+    public bool HasAlContextExtension(string extension) => _alContextExtensions.Contains(extension);
+
+    internal bool IsEfxSupported;
+
+    internal ISawmill OpenALSawmill = default!;
+
+    private void _audioCreateContext()
+    {
+        unsafe
+        {
+            _openALContext = ALC.CreateContext(_openALDevice, (int*) 0);
+        }
+
+        ALC.MakeContextCurrent(_openALContext);
+        _checkAlcError(_openALDevice);
+        _checkAlError();
+
+        // Load up AL context extensions.
+        var s = ALC.GetString(ALDevice.Null, AlcGetString.Extensions) ?? "";
+        foreach (var extension in s.Split(' '))
+        {
+            _alContextExtensions.Add(extension);
+        }
+
+        OpenALSawmill.Debug("OpenAL Vendor: {0}", AL.Get(ALGetString.Vendor));
+        OpenALSawmill.Debug("OpenAL Renderer: {0}", AL.Get(ALGetString.Renderer));
+        OpenALSawmill.Debug("OpenAL Version: {0}", AL.Get(ALGetString.Version));
+    }
+
+    private bool _audioOpenDevice()
+    {
+        var preferredDevice = _cfg.GetCVar(CVars.AudioDevice);
+
+        // Open device.
+        if (!string.IsNullOrEmpty(preferredDevice))
+        {
+            _openALDevice = ALC.OpenDevice(preferredDevice);
+            if (_openALDevice == IntPtr.Zero)
+            {
+                OpenALSawmill.Warning("Unable to open preferred audio device '{0}': {1}. Falling back default.",
+                    preferredDevice, ALC.GetError(ALDevice.Null));
+
+                _openALDevice = ALC.OpenDevice(null);
+            }
+        }
+        else
+        {
+            _openALDevice = ALC.OpenDevice(null);
+        }
+
+        _checkAlcError(_openALDevice);
+
+        if (_openALDevice == IntPtr.Zero)
+        {
+            OpenALSawmill.Error("Unable to open OpenAL device! {1}", ALC.GetError(ALDevice.Null));
+            return false;
+        }
+
+        // Load up ALC extensions.
+        var s = ALC.GetString(_openALDevice, AlcGetString.Extensions) ?? "";
+        foreach (var extension in s.Split(' '))
+        {
+            _alcDeviceExtensions.Add(extension);
+        }
+        return true;
+    }
+
+    private void InitializeAudio()
+    {
+        OpenALSawmill = _logMan.GetSawmill("clyde.oal");
+
+        if (!_audioOpenDevice())
+            return;
+
+        // Create OpenAL context.
+        _audioCreateContext();
+
+        IsEfxSupported = HasAlDeviceExtension("ALC_EXT_EFX");
+
+        _cfg.OnValueChanged(CVars.AudioMasterVolume, SetMasterVolume, true);
+    }
+
+    internal bool IsMainThread()
+    {
+        return Thread.CurrentThread == _gameThread;
+    }
+
+    private static void RemoveEfx((int sourceHandle, int filterHandle) handles)
+    {
+        if (handles.filterHandle != 0)
+            EFX.DeleteFilter(handles.filterHandle);
+    }
+
+    private void _checkAlcError(ALDevice device,
+        [CallerMemberName] string callerMember = "",
+        [CallerLineNumber] int callerLineNumber = -1)
+    {
+        var error = ALC.GetError(device);
+        if (error != AlcError.NoError)
+        {
+            OpenALSawmill.Error("[{0}:{1}] ALC error: {2}", callerMember, callerLineNumber, error);
+        }
+    }
+
+    public void _checkAlError([CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLineNumber = -1)
+    {
+        var error = AL.GetError();
+        if (error != ALError.NoError)
+        {
+            OpenALSawmill.Error("[{0}:{1}] AL error: {2}", callerMember, callerLineNumber, error);
+        }
+    }
+
+    private sealed class LoadedAudioSample
+    {
+        public readonly int BufferHandle;
+
+        public LoadedAudioSample(int bufferHandle)
+        {
+            BufferHandle = bufferHandle;
+        }
+    }
+}

Robust.Client/Audio/AudioOverlay.cs

@@ -0,0 +1,89 @@
+using System.Numerics;
+using System.Text;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Client.ResourceManagement;
+using Robust.Shared.Audio;
+using Robust.Shared.Enums;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Maths;
+using AudioComponent = Robust.Shared.Audio.Components.AudioComponent;
+
+namespace Robust.Client.Audio;
+
+/// <summary>
+/// Debug overlay for audio.
+/// </summary>
+public sealed class AudioOverlay : Overlay
+{
+    public override OverlaySpace Space => OverlaySpace.ScreenSpace;
+
+    private IEntityManager _entManager;
+    private IPlayerManager _playerManager;
+    private AudioSystem _audio;
+    private SharedTransformSystem _transform;
+
+    private Font _font;
+
+    public AudioOverlay(IEntityManager entManager, IPlayerManager playerManager, IResourceCache cache, AudioSystem audio, SharedTransformSystem transform)
+    {
+        _entManager = entManager;
+        _playerManager = playerManager;
+        _audio = audio;
+        _transform = transform;
+
+        _font = new VectorFont(cache.GetResource<FontResource>("/Fonts/NotoSans/NotoSans-Regular.ttf"), 10);
+    }
+
+    protected internal override void Draw(in OverlayDrawArgs args)
+    {
+        var localPlayer = _playerManager.LocalPlayer?.ControlledEntity;
+
+        if (args.ViewportControl == null || localPlayer == null)
+            return;
+
+        var screenHandle = args.ScreenHandle;
+        var output = new StringBuilder();
+        var listenerPos = _entManager.GetComponent<TransformComponent>(localPlayer.Value).MapPosition;
+
+        if (listenerPos.MapId != args.MapId)
+            return;
+
+        var query = _entManager.AllEntityQueryEnumerator<AudioComponent>();
+
+        while (query.MoveNext(out var uid, out var comp))
+        {
+            var mapId = MapId.Nullspace;
+            var audioPos = Vector2.Zero;
+
+            if (_entManager.TryGetComponent<TransformComponent>(uid, out var xform))
+            {
+                mapId = xform.MapID;
+                audioPos = _transform.GetWorldPosition(uid);
+            }
+
+            if (mapId != args.MapId)
+                continue;
+
+            var screenPos = args.ViewportControl.WorldToScreen(audioPos);
+            var distance = audioPos - listenerPos.Position;
+            var posOcclusion = _audio.GetOcclusion(listenerPos, distance, distance.Length(), uid);
+
+            output.Clear();
+            output.AppendLine("Audio Source");
+            output.AppendLine("Runtime:");
+            output.AppendLine($"- Occlusion: {posOcclusion:0.0000}");
+            output.AppendLine("Params:");
+            output.AppendLine($"- Volume: {comp.Volume:0.0000}");
+            output.AppendLine($"- Reference distance: {comp.ReferenceDistance}");
+            output.AppendLine($"- Max distance: {comp.MaxDistance}");
+            var outputText = output.ToString().Trim();
+            var dimensions = screenHandle.GetDimensions(_font, outputText, 1f);
+            var buffer = new Vector2(3f, 3f);
+            screenHandle.DrawRect(new UIBox2(screenPos - buffer, screenPos + dimensions + buffer), new Color(39, 39, 48));
+            screenHandle.DrawString(_font, screenPos, outputText);
+        }
+    }
+}

Robust.Client/Audio/AudioStream.cs

@@ -1,18 +1,21 @@
 using System;
-using Robust.Client.Graphics;
+using Robust.Shared.Graphics;
 
 namespace Robust.Client.Audio;
 
+/// <summary>
+/// Has the metadata for a particular audio stream as well as the relevant internal handle to it.
+/// </summary>
 public sealed class AudioStream
 {
     public TimeSpan Length { get; }
-    internal ClydeHandle? ClydeHandle { get; }
+    internal IClydeHandle? ClydeHandle { get; }
     public string? Name { get; }
     public string? Title { get; }
     public string? Artist { get; }
     public int ChannelCount { get; }
 
-    internal AudioStream(ClydeHandle handle, TimeSpan length, int channelCount, string? name = null, string? title = null, string? artist = null)
+    internal AudioStream(IClydeHandle? handle, TimeSpan length, int channelCount, string? name = null, string? title = null, string? artist = null)
     {
         ClydeHandle = handle;
         Length = length;

Robust.Client/Audio/AudioSystem.Effects.cs

@@ -0,0 +1,76 @@
+using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using Robust.Client.Audio.Effects;
+using Robust.Shared.Audio.Components;
+using Robust.Shared.GameObjects;
+
+namespace Robust.Client.Audio;
+
+public sealed partial class AudioSystem
+{
+    protected override void InitializeEffect()
+    {
+        base.InitializeEffect();
+        SubscribeLocalEvent<AudioEffectComponent, ComponentAdd>(OnEffectAdd);
+        SubscribeLocalEvent<AudioEffectComponent, ComponentShutdown>(OnEffectShutdown);
+
+        SubscribeLocalEvent<AudioAuxiliaryComponent, ComponentAdd>(OnAuxiliaryAdd);
+        SubscribeLocalEvent<AudioAuxiliaryComponent, AfterAutoHandleStateEvent>(OnAuxiliaryAuto);
+    }
+
+    private void OnEffectAdd(EntityUid uid, AudioEffectComponent component, ComponentAdd args)
+    {
+        var effect = new AudioEffect(_audio);
+        component.Effect = effect;
+    }
+
+    private void OnEffectShutdown(EntityUid uid, AudioEffectComponent component, ComponentShutdown args)
+    {
+        if (component.Effect is AudioEffect effect)
+        {
+            effect.Dispose();
+        }
+    }
+
+    private void OnAuxiliaryAdd(EntityUid uid, AudioAuxiliaryComponent component, ComponentAdd args)
+    {
+        component.Auxiliary = new AuxiliaryAudio();
+    }
+
+    private void OnAuxiliaryAuto(EntityUid uid, AudioAuxiliaryComponent component, ref AfterAutoHandleStateEvent args)
+    {
+        if (TryComp<AudioEffectComponent>(component.Effect, out var effectComp))
+        {
+            component.Auxiliary.SetEffect(effectComp.Effect);
+        }
+        else
+        {
+            component.Auxiliary.SetEffect(null);
+        }
+    }
+
+    public override void SetAuxiliary(EntityUid uid, AudioComponent audio, EntityUid? auxUid)
+    {
+        base.SetAuxiliary(uid, audio, auxUid);
+        if (TryComp<AudioAuxiliaryComponent>(audio.Auxiliary, out var auxComp))
+        {
+            audio.Source.SetAuxiliary(auxComp.Auxiliary);
+        }
+        else
+        {
+            audio.Source.SetAuxiliary(null);
+        }
+    }
+
+    public override void SetEffect(EntityUid auxUid, AudioAuxiliaryComponent aux, EntityUid? effectUid)
+    {
+        base.SetEffect(auxUid, aux, effectUid);
+        if (TryComp<AudioEffectComponent>(aux.Effect, out var effectComp))
+        {
+            aux.Auxiliary.SetEffect(effectComp.Effect);
+        }
+        else
+        {
+            aux.Auxiliary.SetEffect(null);
+        }
+    }
+}

Robust.Client/Audio/AudioSystem.cs

@@ -0,0 +1,655 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Numerics;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Client.ResourceManagement;
+using Robust.Shared;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Components;
+using Robust.Shared.Audio.Sources;
+using Robust.Shared.Audio.Systems;
+using Robust.Shared.Exceptions;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Map.Components;
+using Robust.Shared.Physics;
+using Robust.Shared.Physics.Components;
+using Robust.Shared.Physics.Systems;
+using Robust.Shared.Player;
+using Robust.Shared.Replays;
+using Robust.Shared.Threading;
+using Robust.Shared.Utility;
+
+namespace Robust.Client.Audio;
+
+public sealed partial class AudioSystem : SharedAudioSystem
+{
+    /*
+     * There's still a lot more OpenAL can do in terms of filters, auxiliary slots, etc.
+     * but exposing the whole thing in an easy way is a lot of effort.
+     */
+
+    [Dependency] private readonly IPlayerManager _playerManager = default!;
+    [Dependency] private readonly IReplayRecordingManager _replayRecording = default!;
+    [Dependency] private readonly IEyeManager _eyeManager = default!;
+    [Dependency] private readonly IResourceCache _resourceCache = default!;
+    [Dependency] private readonly IMapManager _mapManager = default!;
+    [Dependency] private readonly IParallelManager _parMan = default!;
+    [Dependency] private readonly IRuntimeLog _runtimeLog = default!;
+    [Dependency] private readonly IAudioInternal _audio = default!;
+    [Dependency] private readonly SharedTransformSystem _xformSys = default!;
+    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
+
+    /// <summary>
+    /// Per-tick cache of relevant streams.
+    /// </summary>
+    private readonly List<(EntityUid Entity, AudioComponent Component, TransformComponent Xform)> _streams = new();
+    private EntityUid? _listenerGrid;
+    private UpdateAudioJob _updateAudioJob;
+
+    private EntityQuery<PhysicsComponent> _physicsQuery;
+
+    private float _maxRayLength;
+
+    public override float ZOffset
+    {
+        get => _zOffset;
+        protected set
+        {
+            _zOffset = value;
+            _audio.SetZOffset(value);
+        }
+    }
+
+    private float _zOffset;
+
+    /// <inheritdoc />
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        _updateAudioJob = new UpdateAudioJob
+        {
+            System = this,
+            Streams = _streams,
+        };
+
+        UpdatesOutsidePrediction = true;
+        // Need to run after Eye updates so we have an accurate listener position.
+        UpdatesAfter.Add(typeof(EyeSystem));
+
+        _physicsQuery = GetEntityQuery<PhysicsComponent>();
+
+        SubscribeLocalEvent<AudioComponent, ComponentStartup>(OnAudioStartup);
+        SubscribeLocalEvent<AudioComponent, ComponentShutdown>(OnAudioShutdown);
+        SubscribeLocalEvent<AudioComponent, EntityPausedEvent>(OnAudioPaused);
+        SubscribeLocalEvent<AudioComponent, AfterAutoHandleStateEvent>(OnAudioState);
+
+        // Replay stuff
+        SubscribeNetworkEvent<PlayAudioGlobalMessage>(OnGlobalAudio);
+        SubscribeNetworkEvent<PlayAudioEntityMessage>(OnEntityAudio);
+        SubscribeNetworkEvent<PlayAudioPositionalMessage>(OnEntityCoordinates);
+
+        CfgManager.OnValueChanged(CVars.AudioAttenuation, OnAudioAttenuation, true);
+        CfgManager.OnValueChanged(CVars.AudioRaycastLength, OnRaycastLengthChanged, true);
+    }
+
+    private void OnAudioState(EntityUid uid, AudioComponent component, ref AfterAutoHandleStateEvent args)
+    {
+        ApplyAudioParams(component.Params, component);
+        component.Source.Global = component.Global;
+
+        if (TryComp<AudioAuxiliaryComponent>(component.Auxiliary, out var auxComp))
+        {
+            component.Source.SetAuxiliary(auxComp.Auxiliary);
+        }
+        else
+        {
+            component.Source.SetAuxiliary(null);
+        }
+    }
+
+    /// <summary>
+    /// Sets the volume for the entire game.
+    /// </summary>
+    public void SetMasterVolume(float value)
+    {
+        _audio.SetMasterVolume(value);
+    }
+
+    public override void Shutdown()
+    {
+        CfgManager.UnsubValueChanged(CVars.AudioAttenuation, OnAudioAttenuation);
+        CfgManager.UnsubValueChanged(CVars.AudioRaycastLength, OnRaycastLengthChanged);
+        base.Shutdown();
+    }
+
+    private void OnAudioPaused(EntityUid uid, AudioComponent component, ref EntityPausedEvent args)
+    {
+        component.Pause();
+    }
+
+    protected override void OnAudioUnpaused(EntityUid uid, AudioComponent component, ref EntityUnpausedEvent args)
+    {
+        base.OnAudioUnpaused(uid, component, ref args);
+        component.StartPlaying();
+    }
+
+    private void OnAudioStartup(EntityUid uid, AudioComponent component, ComponentStartup args)
+    {
+        if (!Timing.ApplyingState && !Timing.IsFirstTimePredicted)
+        {
+            return;
+        }
+
+        if (!TryGetAudio(component.FileName, out var audioResource))
+        {
+            Log.Error($"Error creating audio source for {audioResource}, can't find file {component.FileName}");
+            return;
+        }
+
+        var source = _audio.CreateAudioSource(audioResource);
+
+        if (source == null)
+        {
+            Log.Error($"Error creating audio source for {audioResource}");
+            DebugTools.Assert(false);
+            source = component.Source;
+        }
+
+        component.Source = source;
+
+        // Need to set all initial data for first frame.
+        ApplyAudioParams(component.Params, component);
+        source.Global = component.Global;
+
+        // Don't play until first frame so occlusion etc. are correct.
+        component.Gain = 0f;
+
+        // If audio came into range then start playback at the correct position.
+        var offset = (Timing.CurTime - component.AudioStart).TotalSeconds % GetAudioLength(component.FileName).TotalSeconds;
+
+        if (offset > 0)
+        {
+            component.PlaybackPosition = (float) offset;
+        }
+    }
+
+    private void OnAudioShutdown(EntityUid uid, AudioComponent component, ComponentShutdown args)
+    {
+        // Breaks with prediction?
+        component.Source.Dispose();
+    }
+
+    private void OnAudioAttenuation(int obj)
+    {
+        _audio.SetAttenuation((Attenuation) obj);
+    }
+
+    private void OnRaycastLengthChanged(float value)
+    {
+        _maxRayLength = value;
+    }
+
+    public override void FrameUpdate(float frameTime)
+    {
+        var eye = _eyeManager.CurrentEye;
+        var localEntity = _playerManager.LocalEntity;
+        Vector2 listenerVelocity;
+
+        if (localEntity != null)
+            listenerVelocity = _physics.GetMapLinearVelocity(localEntity.Value);
+        else
+            listenerVelocity = Vector2.Zero;
+
+        _audio.SetVelocity(listenerVelocity);
+        _audio.SetRotation(eye.Rotation);
+        _audio.SetPosition(eye.Position.Position);
+
+        var ourPos = GetListenerCoordinates();
+
+        var query = AllEntityQuery<AudioComponent, TransformComponent>();
+        _streams.Clear();
+
+        while (query.MoveNext(out var uid, out var comp, out var xform))
+        {
+            _streams.Add((uid, comp, xform));
+        }
+
+        _mapManager.TryFindGridAt(ourPos, out var gridUid, out _);
+        _listenerGrid = gridUid == EntityUid.Invalid ? null : gridUid;
+
+        try
+        {
+            _updateAudioJob.OurPosition = ourPos;
+            _parMan.ProcessNow(_updateAudioJob, _streams.Count);
+        }
+        catch (Exception e)
+        {
+            Log.Error($"Caught exception while processing entity streams.");
+            _runtimeLog.LogException(e, $"{nameof(AudioSystem)}.{nameof(FrameUpdate)}");
+        }
+    }
+
+    public MapCoordinates GetListenerCoordinates()
+    {
+        return _eyeManager.CurrentEye.Position;
+    }
+
+    private void ProcessStream(EntityUid entity, AudioComponent component, TransformComponent xform, MapCoordinates listener)
+    {
+        // TODO:
+        // I Originally tried to be fancier here but it caused audio issues so just trying
+        // to replicate the old behaviour for now.
+        if (!component.Started)
+        {
+            component.Started = true;
+            component.StartPlaying();
+        }
+
+        // If it's global but on another map (that isn't nullspace) then stop playing it.
+        if (component.Global)
+        {
+            if (xform.MapID != MapId.Nullspace && listener.MapId != xform.MapID)
+            {
+                component.Gain = 0f;
+                return;
+            }
+
+            // Resume playing.
+            component.Volume = component.Params.Volume;
+            return;
+        }
+
+        // Non-global sounds, stop playing if on another map.
+        // Not relevant to us.
+        if (listener.MapId != xform.MapID)
+        {
+            component.Gain = 0f;
+            return;
+        }
+
+        Vector2 worldPos;
+        var gridUid = xform.ParentUid;
+
+        // Handle grid audio differently by using nearest-edge instead of entity centre.
+        if ((component.Flags & AudioFlags.GridAudio) != 0x0)
+        {
+            // It's our grid so max volume.
+            if (_listenerGrid == gridUid)
+            {
+                component.Volume = component.Params.Volume;
+                component.Occlusion = 0f;
+                component.Position = listener.Position;
+                return;
+            }
+
+            // TODO: Need a grid-optimised version because this is gonna be expensive.
+            // Just to avoid clipping on and off grid or nearestPoint changing we'll
+            // always set the sound to listener's pos, we'll just manually do gain ourselves.
+            if (_physics.TryGetNearest(gridUid, listener, out _, out var gridDistance))
+            {
+                // Out of range
+                if (gridDistance > component.MaxDistance)
+                {
+                    component.Gain = 0f;
+                    return;
+                }
+
+                var paramsGain = MathF.Pow(10, component.Params.Volume / 10);
+
+                // Thought I'd never have to manually calculate gain again but this is the least
+                // unpleasant audio I could get at the moment.
+                component.Gain = paramsGain * _audio.GetAttenuationGain(
+                    gridDistance,
+                    component.Params.RolloffFactor,
+                    component.Params.ReferenceDistance,
+                    component.Params.MaxDistance);
+                component.Position = listener.Position;
+                return;
+            }
+
+            // Can't get nearest point so don't play anymore.
+            component.Gain = 0f;
+            return;
+        }
+
+        worldPos = _xformSys.GetWorldPosition(entity);
+        component.Volume = component.Params.Volume;
+
+        // Max distance check
+        var delta = worldPos - listener.Position;
+        var distance = delta.Length();
+
+        if (distance > 0f && distance < 0.01f)
+        {
+            worldPos = listener.Position;
+            delta = Vector2.Zero;
+            distance = 0f;
+        }
+
+        // Out of range so just clip it for us.
+        if (distance > component.MaxDistance)
+        {
+            // Still keeps the source playing, just with no volume.
+            component.Gain = 0f;
+            return;
+        }
+
+        // Update audio occlusion
+        var occlusion = GetOcclusion(listener, delta, distance, entity);
+        component.Occlusion = occlusion;
+
+        // Update audio positions.
+        component.Position = worldPos;
+
+        // Make race cars go NYYEEOOOOOMMMMM
+        if (_physicsQuery.TryGetComponent(entity, out var physicsComp))
+        {
+            // This actually gets the tracked entity's xform & iterates up though the parents for the second time. Bit
+            // inefficient.
+            var velocity = _physics.GetMapLinearVelocity(entity, physicsComp, xform);
+            component.Velocity = velocity;
+        }
+    }
+
+    /// <summary>
+    /// Gets the audio occlusion from the target audio entity to the listener's position.
+    /// </summary>
+    public float GetOcclusion(MapCoordinates listener, Vector2 delta, float distance, EntityUid? ignoredEnt = null)
+    {
+        float occlusion = 0;
+
+        if (distance > 0.1)
+        {
+            var rayLength = MathF.Min(distance, _maxRayLength);
+            var ray = new CollisionRay(listener.Position, delta / distance, OcclusionCollisionMask);
+            occlusion = _physics.IntersectRayPenetration(listener.MapId, ray, rayLength, ignoredEnt);
+        }
+
+        return occlusion;
+    }
+
+    private bool TryGetAudio(string filename, [NotNullWhen(true)] out AudioResource? audio)
+    {
+        if (_resourceCache.TryGetResource(new ResPath(filename), out audio))
+            return true;
+
+        Log.Error($"Server tried to play audio file {filename} which does not exist.");
+        return false;
+    }
+
+    private bool TryCreateAudioSource(AudioStream stream, [NotNullWhen(true)] out IAudioSource? source)
+    {
+        if (!Timing.IsFirstTimePredicted)
+        {
+            source = null;
+            Log.Error($"Tried to create audio source outside of prediction!");
+            DebugTools.Assert(false);
+            return false;
+        }
+
+        source = _audio.CreateAudioSource(stream);
+        return source != null;
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayPvs(string filename, EntityCoordinates coordinates,
+        AudioParams? audioParams = null)
+    {
+        return PlayStatic(filename, Filter.Local(), coordinates, true, audioParams);
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayPvs(string filename, EntityUid uid, AudioParams? audioParams = null)
+    {
+        return PlayEntity(filename, Filter.Local(), uid, true, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayPredicted(SoundSpecifier? sound, EntityUid source, EntityUid? user, AudioParams? audioParams = null)
+    {
+        if (Timing.IsFirstTimePredicted || sound == null)
+            return PlayEntity(sound, Filter.Local(), source, false, audioParams);
+
+        return null; // uhh Lets hope predicted audio never needs to somehow store the playing audio....
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayPredicted(SoundSpecifier? sound, EntityCoordinates coordinates, EntityUid? user, AudioParams? audioParams = null)
+    {
+        if (Timing.IsFirstTimePredicted || sound == null)
+            return PlayStatic(sound, Filter.Local(), coordinates, false, audioParams);
+
+        return null;
+    }
+
+    /// <summary>
+    ///     Play an audio file globally, without position.
+    /// </summary>
+    /// <param name="filename">The resource path to the OGG Vorbis file to play.</param>
+    /// <param name="audioParams"></param>
+    private (EntityUid Entity, AudioComponent Component)? PlayGlobal(string filename, AudioParams? audioParams = null, bool recordReplay = true)
+    {
+        if (recordReplay && _replayRecording.IsRecording)
+        {
+            _replayRecording.RecordReplayMessage(new PlayAudioGlobalMessage
+            {
+                FileName = filename,
+                AudioParams = audioParams ?? AudioParams.Default
+            });
+        }
+
+        return TryGetAudio(filename, out var audio) ? PlayGlobal(audio, audioParams) : default;
+    }
+
+    /// <summary>
+    ///     Play an audio stream globally, without position.
+    /// </summary>
+    /// <param name="stream">The audio stream to play.</param>
+    /// <param name="audioParams"></param>
+    private (EntityUid Entity, AudioComponent Component)? PlayGlobal(AudioStream stream, AudioParams? audioParams = null)
+    {
+        var (entity, component) = CreateAndStartPlayingStream(audioParams, stream);
+        component.Global = true;
+        component.Source.Global = true;
+        Dirty(entity, component);
+        return (entity, component);
+    }
+
+    /// <summary>
+    ///     Play an audio file following an entity.
+    /// </summary>
+    /// <param name="filename">The resource path to the OGG Vorbis file to play.</param>
+    /// <param name="entity">The entity "emitting" the audio.</param>
+    private (EntityUid Entity, AudioComponent Component)? PlayEntity(string filename, EntityUid entity, AudioParams? audioParams = null, bool recordReplay = true)
+    {
+        if (recordReplay && _replayRecording.IsRecording)
+        {
+            _replayRecording.RecordReplayMessage(new PlayAudioEntityMessage
+            {
+                FileName = filename,
+                NetEntity = GetNetEntity(entity),
+                AudioParams = audioParams ?? AudioParams.Default
+            });
+        }
+
+        return TryGetAudio(filename, out var audio) ? PlayEntity(audio, entity, audioParams) : default;
+    }
+
+    /// <summary>
+    ///     Play an audio stream following an entity.
+    /// </summary>
+    /// <param name="stream">The audio stream to play.</param>
+    /// <param name="entity">The entity "emitting" the audio.</param>
+    /// <param name="audioParams"></param>
+    private (EntityUid Entity, AudioComponent Component)? PlayEntity(AudioStream stream, EntityUid entity, AudioParams? audioParams = null)
+    {
+        var playing = CreateAndStartPlayingStream(audioParams, stream);
+        _xformSys.SetCoordinates(playing.Entity, new EntityCoordinates(entity, Vector2.Zero));
+
+        return playing;
+    }
+
+    /// <summary>
+    ///     Play an audio file at a static position.
+    /// </summary>
+    /// <param name="filename">The resource path to the OGG Vorbis file to play.</param>
+    /// <param name="coordinates">The coordinates at which to play the audio.</param>
+    /// <param name="audioParams"></param>
+    private (EntityUid Entity, AudioComponent Component)? PlayStatic(string filename, EntityCoordinates coordinates, AudioParams? audioParams = null, bool recordReplay = true)
+    {
+        if (recordReplay && _replayRecording.IsRecording)
+        {
+            _replayRecording.RecordReplayMessage(new PlayAudioPositionalMessage
+            {
+                FileName = filename,
+                Coordinates = GetNetCoordinates(coordinates),
+                AudioParams = audioParams ?? AudioParams.Default
+            });
+        }
+
+        return TryGetAudio(filename, out var audio) ? PlayStatic(audio, coordinates, audioParams) : default;
+    }
+
+    /// <summary>
+    ///     Play an audio stream at a static position.
+    /// </summary>
+    /// <param name="stream">The audio stream to play.</param>
+    /// <param name="coordinates">The coordinates at which to play the audio.</param>
+    /// <param name="audioParams"></param>
+    private (EntityUid Entity, AudioComponent Component)? PlayStatic(AudioStream stream, EntityCoordinates coordinates, AudioParams? audioParams = null)
+    {
+        var playing = CreateAndStartPlayingStream(audioParams, stream);
+        _xformSys.SetCoordinates(playing.Entity, coordinates);
+        return playing;
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayGlobal(string filename, Filter playerFilter, bool recordReplay, AudioParams? audioParams = null)
+    {
+        return PlayGlobal(filename, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayEntity(string filename, Filter playerFilter, EntityUid entity, bool recordReplay, AudioParams? audioParams = null)
+    {
+        return PlayEntity(filename, entity, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayStatic(string filename, Filter playerFilter, EntityCoordinates coordinates, bool recordReplay, AudioParams? audioParams = null)
+    {
+        return PlayStatic(filename, coordinates, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayGlobal(string filename, ICommonSession recipient, AudioParams? audioParams = null)
+    {
+        return PlayGlobal(filename, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayGlobal(string filename, EntityUid recipient, AudioParams? audioParams = null)
+    {
+        return PlayGlobal(filename, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayEntity(string filename, ICommonSession recipient, EntityUid uid, AudioParams? audioParams = null)
+    {
+        return PlayEntity(filename, uid, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayEntity(string filename, EntityUid recipient, EntityUid uid, AudioParams? audioParams = null)
+    {
+        return PlayEntity(filename, uid, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayStatic(string filename, ICommonSession recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
+    {
+        return PlayStatic(filename, coordinates, audioParams);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayStatic(string filename, EntityUid recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
+    {
+        return PlayStatic(filename, coordinates, audioParams);
+    }
+
+    private (EntityUid Entity, AudioComponent Component) CreateAndStartPlayingStream(AudioParams? audioParams, AudioStream stream)
+    {
+        var audioP = audioParams ?? AudioParams.Default;
+        var entity = EntityManager.CreateEntityUninitialized("Audio", MapCoordinates.Nullspace);
+        var comp = SetupAudio(entity, stream.Name!, audioP);
+        EntityManager.InitializeAndStartEntity(entity);
+        var source = comp.Source;
+
+        // TODO clamp the offset inside of SetPlaybackPosition() itself.
+        var offset = audioP.PlayOffsetSeconds;
+        offset = Math.Clamp(offset, 0f, (float) stream.Length.TotalSeconds - 0.01f);
+        source.PlaybackPosition = offset;
+
+        ApplyAudioParams(audioP, comp);
+        comp.Params = audioP;
+        source.StartPlaying();
+        return (entity, comp);
+    }
+
+    /// <summary>
+    /// Applies the audioparams to the underlying audio source.
+    /// </summary>
+    private void ApplyAudioParams(AudioParams audioParams, IAudioSource source)
+    {
+        source.Pitch = audioParams.Pitch;
+        source.Volume = audioParams.Volume;
+        source.RolloffFactor = audioParams.RolloffFactor;
+        source.MaxDistance = audioParams.MaxDistance;
+        source.ReferenceDistance = audioParams.ReferenceDistance;
+        source.Looping = audioParams.Loop;
+    }
+
+    private void OnEntityCoordinates(PlayAudioPositionalMessage ev)
+    {
+        PlayStatic(ev.FileName, GetCoordinates(ev.Coordinates), ev.AudioParams, false);
+    }
+
+    private void OnEntityAudio(PlayAudioEntityMessage ev)
+    {
+        PlayEntity(ev.FileName, GetEntity(ev.NetEntity), ev.AudioParams, false);
+    }
+
+    private void OnGlobalAudio(PlayAudioGlobalMessage ev)
+    {
+        PlayGlobal(ev.FileName, ev.AudioParams, false);
+    }
+
+    protected override TimeSpan GetAudioLengthImpl(string filename)
+    {
+        return _resourceCache.GetResource<AudioResource>(filename).AudioStream.Length;
+    }
+
+    #region Jobs
+
+    private record struct UpdateAudioJob : IParallelRobustJob
+    {
+        public int BatchSize => 2;
+
+        public AudioSystem System;
+
+        public MapCoordinates OurPosition;
+        public List<(EntityUid Entity, AudioComponent Component, TransformComponent Xform)> Streams;
+
+        public void Execute(int index)
+        {
+            var comp = Streams[index];
+
+            System.ProcessStream(comp.Entity, comp.Component, comp.Xform, OurPosition);
+        }
+    }
+
+    #endregion
+}

Robust.Client/Audio/Effects/AudioEffect.cs

@@ -0,0 +1,455 @@
+using System;
+using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Effects;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Audio.Effects;
+
+/// <inheritdoc />
+internal sealed class AudioEffect : IAudioEffect
+{
+    internal int Handle;
+
+    private readonly IAudioInternal _master;
+
+    public AudioEffect(IAudioInternal manager)
+    {
+        Handle = EFX.GenEffect();
+        _master = manager;
+        EFX.Effect(Handle, EffectInteger.EffectType, (int) EffectType.EaxReverb);
+    }
+
+    public void Dispose()
+    {
+        if (Handle != 0)
+        {
+            EFX.DeleteEffect(Handle);
+            Handle = 0;
+        }
+    }
+
+    private void _checkDisposed()
+    {
+        if (Handle == -1)
+        {
+            throw new ObjectDisposedException(nameof(AudioEffect));
+        }
+    }
+
+    /// <inheritdoc />
+    public float Density
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbDensity, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbDensity, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float Diffusion
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbDiffusion, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbDiffusion, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float Gain
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbGain, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbGain, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float GainHF
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbGainHF, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbGainHF, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float GainLF
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbGainLF, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbGainLF, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float DecayTime
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayTime, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbDecayTime, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float DecayHFRatio
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayHFRatio, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbDecayHFRatio, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float DecayLFRatio
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayLFRatio, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbDecayLFRatio, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float ReflectionsGain
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbReflectionsGain, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbReflectionsGain, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float ReflectionsDelay
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbReflectionsDelay, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbReflectionsDelay, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public Vector3 ReflectionsPan
+    {
+        get
+        {
+            _checkDisposed();
+            var value = EFX.GetEffect(Handle, EffectVector3.EaxReverbReflectionsPan);
+            _master._checkAlError();
+            return new Vector3(value.X, value.Z, value.Y);
+        }
+        set
+        {
+            _checkDisposed();
+            var openVec = new OpenTK.Mathematics.Vector3(value.X, value.Y, value.Z);
+            EFX.Effect(Handle, EffectVector3.EaxReverbReflectionsPan, ref openVec);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float LateReverbGain
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbLateReverbGain, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbLateReverbGain, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float LateReverbDelay
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbLateReverbDelay, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbLateReverbDelay, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public Vector3 LateReverbPan
+    {
+        get
+        {
+            _checkDisposed();
+            var value = EFX.GetEffect(Handle, EffectVector3.EaxReverbLateReverbPan);
+            _master._checkAlError();
+            return new Vector3(value.X, value.Z, value.Y);
+        }
+        set
+        {
+            _checkDisposed();
+            var openVec = new OpenTK.Mathematics.Vector3(value.X, value.Y, value.Z);
+            EFX.Effect(Handle, EffectVector3.EaxReverbLateReverbPan, ref openVec);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float EchoTime
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbEchoTime, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbEchoTime, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float EchoDepth
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbEchoDepth, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbEchoDepth, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float ModulationTime
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbModulationTime, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbModulationTime, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float ModulationDepth
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbModulationDepth, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbModulationDepth, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float AirAbsorptionGainHF
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbAirAbsorptionGainHF, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbAirAbsorptionGainHF, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float HFReference
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbHFReference, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbHFReference, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float LFReference
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbLFReference, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbLFReference, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float RoomRolloffFactor
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectFloat.EaxReverbRoomRolloffFactor, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectFloat.EaxReverbRoomRolloffFactor, value);
+            _master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public int DecayHFLimit
+    {
+        get
+        {
+            _checkDisposed();
+            EFX.GetEffect(Handle, EffectInteger.EaxReverbDecayHFLimit, out var value);
+            _master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            EFX.Effect(Handle, EffectInteger.EaxReverbDecayHFLimit, value);
+            _master._checkAlError();
+        }
+    }
+}

Robust.Client/Audio/Effects/AuxiliaryAudio.cs

@@ -0,0 +1,32 @@
+using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using Robust.Shared.Audio.Effects;
+
+namespace Robust.Client.Audio.Effects;
+
+/// <inheritdoc />
+internal sealed class AuxiliaryAudio : IAuxiliaryAudio
+{
+    internal int Handle = EFX.GenAuxiliaryEffectSlot();
+
+    public void Dispose()
+    {
+        if (Handle != -1)
+        {
+            EFX.DeleteAuxiliaryEffectSlot(Handle);
+            Handle = -1;
+        }
+    }
+
+    /// <inheritdoc />
+    public void SetEffect(IAudioEffect? effect)
+    {
+        if (effect is AudioEffect audEffect)
+        {
+            EFX.AuxiliaryEffectSlot(Handle, EffectSlotInteger.Effect, audEffect.Handle);
+        }
+        else
+        {
+            EFX.AuxiliaryEffectSlot(Handle, EffectSlotInteger.Effect, 0);
+        }
+    }
+}

Robust.Client/Audio/HeadlessAudioManager.cs

@@ -0,0 +1,111 @@
+using System;
+using System.IO;
+using System.Numerics;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.AudioLoading;
+using Robust.Shared.Audio.Sources;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Audio;
+
+/// <summary>
+/// Headless client audio.
+/// </summary>
+internal sealed class HeadlessAudioManager : IAudioInternal
+{
+    /// <inheritdoc />
+    public void InitializePostWindowing()
+    {
+    }
+
+    /// <inheritdoc />
+    public void Shutdown()
+    {
+    }
+
+    /// <inheritdoc />
+    public void FlushALDisposeQueues()
+    {
+    }
+
+    /// <inheritdoc />
+    public IAudioSource CreateAudioSource(AudioStream stream)
+    {
+        return DummyAudioSource.Instance;
+    }
+
+    /// <inheritdoc />
+    public IBufferedAudioSource CreateBufferedAudioSource(int buffers, bool floatAudio = false)
+    {
+        return DummyBufferedAudioSource.Instance;
+    }
+
+    /// <inheritdoc />
+    public void SetVelocity(Vector2 velocity)
+    {
+    }
+
+    /// <inheritdoc />
+    public void SetPosition(Vector2 position)
+    {
+    }
+
+    /// <inheritdoc />
+    public void SetRotation(Angle angle)
+    {
+    }
+
+    /// <inheritdoc />
+    public void SetMasterVolume(float value)
+    {
+    }
+
+    /// <inheritdoc />
+    public void SetAttenuation(Attenuation attenuation)
+    {
+    }
+
+    /// <inheritdoc />
+    public void StopAllAudio()
+    {
+    }
+
+    /// <inheritdoc />
+    public void SetZOffset(float f)
+    {
+    }
+
+    /// <inheritdoc />
+    public void _checkAlError(string callerMember = "", int callerLineNumber = -1)
+    {
+    }
+
+    /// <inheritdoc />
+    public float GetAttenuationGain(float distance, float rolloffFactor, float referenceDistance, float maxDistance)
+    {
+        return 0f;
+    }
+
+    public AudioStream LoadAudioOggVorbis(Stream stream, string? name = null)
+    {
+        var metadata = AudioLoaderOgg.LoadAudioMetadata(stream);
+        return AudioStreamFromMetadata(metadata, name);
+    }
+
+    public AudioStream LoadAudioWav(Stream stream, string? name = null)
+    {
+        var metadata = AudioLoaderWav.LoadAudioMetadata(stream);
+        return AudioStreamFromMetadata(metadata, name);
+    }
+
+    public AudioStream LoadAudioRaw(ReadOnlySpan<short> samples, int channels, int sampleRate, string? name = null)
+    {
+        var length = TimeSpan.FromSeconds((double) samples.Length / channels / sampleRate);
+        return new AudioStream(null, length, channels, name);
+    }
+
+    private static AudioStream AudioStreamFromMetadata(AudioMetadata metadata, string? name)
+    {
+        return new AudioStream(null, metadata.Length, metadata.ChannelCount, name, metadata.Title, metadata.Artist);
+    }
+}

Robust.Client/Audio/IAudioInternal.cs

@@ -0,0 +1,68 @@
+using System;
+using System.IO;
+using System.Numerics;
+using System.Runtime.CompilerServices;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Sources;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Audio;
+
+/// <summary>
+/// Handles clientside audio.
+/// </summary>
+internal interface IAudioInternal
+{
+    void InitializePostWindowing();
+    void Shutdown();
+
+    /// <summary>
+    /// Flushes all pending queues for disposing of AL sources.
+    /// </summary>
+    void FlushALDisposeQueues();
+
+    IAudioSource? CreateAudioSource(AudioStream stream);
+
+    IBufferedAudioSource CreateBufferedAudioSource(int buffers, bool floatAudio=false);
+
+    /// <summary>
+    /// Sets the velocity for the audio listener.
+    /// </summary>
+    void SetVelocity(Vector2 velocity);
+
+    /// <summary>
+    /// Sets position for the audio listener.
+    /// </summary>
+    void SetPosition(Vector2 position);
+
+    /// <summary>
+    /// Sets rotation for the audio listener.
+    /// </summary>
+    void SetRotation(Angle angle);
+
+    void SetMasterVolume(float value);
+    void SetAttenuation(Attenuation attenuation);
+
+    /// <summary>
+    /// Stops all audio from playing.
+    /// </summary>
+    void StopAllAudio();
+
+    /// <summary>
+    /// Sets the Z-offset for the audio listener.
+    /// </summary>
+    void SetZOffset(float f);
+
+    void _checkAlError([CallerMemberName] string callerMember = "", [CallerLineNumber] int callerLineNumber = -1);
+
+    /// <summary>
+    /// Manually calculates the specified gain for an attenuation source with the specified distance.
+    /// </summary>
+    float GetAttenuationGain(float distance, float rolloffFactor, float referenceDistance, float maxDistance);
+
+    AudioStream LoadAudioOggVorbis(Stream stream, string? name = null);
+
+    AudioStream LoadAudioWav(Stream stream, string? name = null);
+
+    AudioStream LoadAudioRaw(ReadOnlySpan<short> samples, int channels, int sampleRate, string? name = null);
+}

Robust.Client/Audio/Midi/IMidiManager.cs

@@ -21,8 +21,6 @@ public interface IMidiManager
     /// </summary>
     float Volume { get; set; }
 
-    public int OcclusionCollisionMask { get; set; }
-
     /// <summary>
     ///     This method tries to return a midi renderer ready to be used.
     ///     You only need to set the <see cref="IMidiRenderer.MidiProgram"/> afterwards.

Robust.Client/Audio/Midi/IMidiRenderer.cs

@@ -3,6 +3,7 @@ using System.Collections;
 using System.Collections.Generic;
 using Robust.Client.Graphics;
 using Robust.Shared.Audio.Midi;
+using Robust.Shared.Audio.Sources;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
 
@@ -20,7 +21,7 @@ public interface IMidiRenderer : IDisposable
     /// <summary>
     ///     The buffered audio source of this renderer.
     /// </summary>
-    internal IClydeBufferedAudioSource Source { get; }
+    internal IBufferedAudioSource Source { get; }
 
     /// <summary>
     ///     Whether this renderer has been disposed or not.

Robust.Client/Audio/Midi/MidiManager.cs

@@ -1,13 +1,11 @@
 using System;
 using System.Collections.Generic;
 using System.IO;
+using System.Numerics;
 using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
 using NFluidsynth;
-using Robust.Client.GameObjects;
-using Robust.Client.Graphics;
-using Robust.Client.ResourceManagement;
 using Robust.Shared;
 using Robust.Shared.Asynchronous;
 using Robust.Shared.Audio.Midi;
@@ -19,7 +17,6 @@ using Robust.Shared.IoC;
 using Robust.Shared.Log;
 using Robust.Shared.Map;
 using Robust.Shared.Maths;
-using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Systems;
 using Robust.Shared.Threading;
@@ -33,25 +30,19 @@ internal sealed partial class MidiManager : IMidiManager
 {
     public const string SoundfontEnvironmentVariable = "ROBUST_SOUNDFONT_OVERRIDE";
 
-    private int _minRendererParallel;
-    private float _occlusionUpdateDelay;
-    private float _positionUpdateDelay;
-
-    [ViewVariables] private TimeSpan _nextOcclusionUpdate = TimeSpan.Zero;
-    [ViewVariables] private TimeSpan _nextPositionUpdate = TimeSpan.Zero;
-
-    [Dependency] private readonly IEyeManager _eyeManager = default!;
-    [Dependency] private readonly IResourceCacheInternal _resourceManager = default!;
+    [Dependency] private readonly IGameTiming _timing = default!;
+    [Dependency] private readonly IResourceManager _resourceManager = default!;
     [Dependency] private readonly IEntityManager _entityManager = default!;
     [Dependency] private readonly IConfigurationManager _cfgMan = default!;
-    [Dependency] private readonly IClydeAudio _clydeAudio = default!;
+    [Dependency] private readonly IAudioInternal _audio = default!;
     [Dependency] private readonly ITaskManager _taskManager = default!;
     [Dependency] private readonly ILogManager _logger = default!;
     [Dependency] private readonly IParallelManager _parallel = default!;
     [Dependency] private readonly IRuntimeLog _runtime = default!;
-    [Dependency] private readonly IGameTiming _timing = default!;
 
+    private AudioSystem _audioSys = default!;
     private SharedPhysicsSystem _broadPhaseSystem = default!;
+    private SharedTransformSystem _xformSystem = default!;
 
     public IReadOnlyList<IMidiRenderer> Renderers
     {
@@ -78,6 +69,10 @@ internal sealed partial class MidiManager : IMidiManager
 
     [ViewVariables] private readonly List<IMidiRenderer> _renderers = new();
 
+    // To avoid lock contention for now just don't update that much fam.
+    private TimeSpan _nextUpdate;
+    private TimeSpan _updateFrequency = TimeSpan.FromSeconds(0.1f);
+
     private bool _alive = true;
     [ViewVariables] private Settings? _settings;
     private Thread? _midiThread;
@@ -132,10 +127,9 @@ internal sealed partial class MidiManager : IMidiManager
 
     private NFluidsynth.Logger.LoggerDelegate _loggerDelegate = default!;
     private ISawmill _fluidsynthSawmill = default!;
-    private float _maxCastLength;
 
-    [ViewVariables(VVAccess.ReadWrite)]
-    public int OcclusionCollisionMask { get; set; }
+    private MidiUpdateJob _updateJob;
+
 
     public MidiManager()
     {
@@ -152,15 +146,6 @@ internal sealed partial class MidiManager : IMidiManager
             _volumeDirty = true;
         }, true);
 
-        _cfgMan.OnValueChanged(CVars.MidiMinRendererParallel,
-            value => _minRendererParallel = value, true);
-
-        _cfgMan.OnValueChanged(CVars.MidiOcclusionUpdateDelay,
-            value => _occlusionUpdateDelay = value, true);
-
-        _cfgMan.OnValueChanged(CVars.MidiPositionUpdateDelay,
-            value => _positionUpdateDelay = value, true);
-
         _midiSawmill = _logger.GetSawmill("midi");
 #if DEBUG
         _midiSawmill.Level = LogLevel.Debug;
@@ -214,8 +199,17 @@ internal sealed partial class MidiManager : IMidiManager
         _midiThread = new Thread(ThreadUpdate);
         _midiThread.Start();
 
+        _updateJob = new MidiUpdateJob()
+        {
+            Manager = this,
+            Renderers = _renderers,
+        };
+
+        _audioSys = _entityManager.EntitySysManager.GetEntitySystem<AudioSystem>();
         _broadPhaseSystem = _entityManager.EntitySysManager.GetEntitySystem<SharedPhysicsSystem>();
-        _cfgMan.OnValueChanged(CVars.AudioRaycastLength, OnRaycastLengthChanged, true);
+        _xformSystem = _entityManager.System<SharedTransformSystem>();
+        _entityManager.GetEntityQuery<PhysicsComponent>();
+        _entityManager.GetEntityQuery<TransformComponent>();
 
         FluidsynthInitialized = true;
     }
@@ -232,11 +226,6 @@ internal sealed partial class MidiManager : IMidiManager
         _midiSawmill.Debug($"Synth Polyphony: {_settings["synth.polyphony"].IntValue}");
     }
 
-    private void OnRaycastLengthChanged(float value)
-    {
-        _maxCastLength = value;
-    }
-
     private void LoggerDelegate(NFluidsynth.Logger.LogLevel level, string message, IntPtr data)
     {
         var rLevel = level switch
@@ -273,7 +262,7 @@ internal sealed partial class MidiManager : IMidiManager
         {
             soundfontLoader.SetCallbacks(_soundfontLoaderCallbacks);
 
-            var renderer = new MidiRenderer(_settings!, soundfontLoader, mono, this, _clydeAudio, _taskManager, _midiSawmill);
+            var renderer = new MidiRenderer(_settings!, soundfontLoader, mono, this, _audio, _taskManager, _midiSawmill);
 
             _midiSawmill.Debug($"Loading fallback soundfont {FallbackSoundfont}");
             // Since the last loaded soundfont takes priority, we load the fallback soundfont before the soundfont.
@@ -351,7 +340,7 @@ internal sealed partial class MidiManager : IMidiManager
                 renderer.LoadSoundfont(file.ToString());
             }
 
-            renderer.Source.SetVolume(Volume);
+            renderer.Source.Volume = _volume;
 
             lock (_renderers)
             {
@@ -372,112 +361,123 @@ internal sealed partial class MidiManager : IMidiManager
             return;
         }
 
-        // Update positions of streams every frame.
+        if (_nextUpdate > _timing.RealTime)
+            return;
+
+        // I don't care for accuracy we only have this for performance for now.
+        _nextUpdate = _timing.RealTime + _updateFrequency;
+
+        // Update positions of streams occasionally.
         // This has a lot of code duplication with AudioSystem.FrameUpdate(), and they should probably be combined somehow.
+        // so TRUE
 
         lock (_renderers)
         {
             if (_renderers.Count == 0)
                 return;
 
-            var transQuery = _entityManager.GetEntityQuery<TransformComponent>();
-            var physicsQuery = _entityManager.GetEntityQuery<PhysicsComponent>();
-            var opts = new ParallelOptions { MaxDegreeOfParallelism = _parallel.ParallelProcessCount };
-
-            if (_renderers.Count > _minRendererParallel)
-            {
-                Parallel.ForEach(_renderers, opts, renderer => UpdateRenderer(renderer, transQuery, physicsQuery));
-            }
-            else
-            {
-                foreach (var renderer in _renderers)
-                {
-                    UpdateRenderer(renderer, transQuery, physicsQuery);
-                }
-            }
-
+            _updateJob.OurPosition = _audioSys.GetListenerCoordinates();
+            _parallel.ProcessNow(_updateJob, _renderers.Count);
         }
 
-        if (_nextOcclusionUpdate < _timing.RealTime)
-            _nextOcclusionUpdate = _timing.RealTime.Add(TimeSpan.FromSeconds(_occlusionUpdateDelay));
-
-        if (_nextPositionUpdate < _timing.RealTime)
-            _nextPositionUpdate = _timing.RealTime.Add(TimeSpan.FromSeconds(_positionUpdateDelay));
-
         _volumeDirty = false;
     }
-    private void UpdateRenderer(IMidiRenderer renderer, EntityQuery<TransformComponent> transQuery,
-        EntityQuery<PhysicsComponent> physicsQuery)
+
+    private void UpdateRenderer(IMidiRenderer renderer, MapCoordinates listener)
     {
+        // TODO: This should be sharing more code with AudioSystem.
         try
         {
             if (renderer.Disposed)
                 return;
 
             if (_volumeDirty)
-                renderer.Source.SetVolume(Volume);
+            {
+                renderer.Source.Volume = Volume;
+            }
 
             if (!renderer.Mono)
             {
-                renderer.Source.SetGlobal();
+                renderer.Source.Global = true;
                 return;
             }
 
-            if (_nextPositionUpdate < _timing.RealTime)
+            MapCoordinates mapPos;
+
+            if (renderer.TrackingEntity is {} trackedEntity && !_entityManager.Deleted(trackedEntity))
             {
-                if (renderer.TrackingEntity is {} trackedEntity && !_entityManager.Deleted(trackedEntity))
-                {
-                    renderer.TrackingCoordinates = transQuery.GetComponent(renderer.TrackingEntity!.Value).MapPosition;
-                }
-                else if (renderer.TrackingCoordinates == null)
+                renderer.TrackingCoordinates = _xformSystem.GetMapCoordinates(renderer.TrackingEntity.Value);
+
+                // Pause it if the attached entity is paused.
+                if (_entityManager.IsPaused(renderer.TrackingEntity))
                 {
+                    renderer.Source.Pause();
                     return;
                 }
-
-                if (!renderer.Source.SetPosition(renderer.TrackingCoordinates.Value.Position))
-                {
-                    return;
-                }
-
-                var vel = _broadPhaseSystem.GetMapLinearVelocity(renderer.TrackingEntity!.Value,
-                    xformQuery: transQuery, physicsQuery: physicsQuery);
-                renderer.Source.SetVelocity(vel);
+            }
+            else if (renderer.TrackingCoordinates == null)
+            {
+                renderer.Source.Pause();
+                return;
             }
 
-            if (renderer.TrackingCoordinates != null && renderer.TrackingCoordinates.Value.MapId == _eyeManager.CurrentMap)
+            mapPos = renderer.TrackingCoordinates.Value;
+
+            // If it's on a different map then just mute it, not pause.
+            if (mapPos.MapId == MapId.Nullspace || mapPos.MapId != listener.MapId)
             {
-                if (_nextOcclusionUpdate >= _timing.RealTime)
-                    return;
+                renderer.Source.Gain = 0f;
+                return;
+            }
 
-                var pos = renderer.TrackingCoordinates.Value;
+            // Was previously muted maybe so try unmuting it?
+            if (renderer.Source.Gain == 0f)
+            {
+                renderer.Source.Volume = Volume;
+            }
 
-                var sourceRelative = pos.Position - _eyeManager.CurrentEye.Position.Position;
-                var occlusion = 0f;
-                if (sourceRelative.Length() > 0)
-                {
-                    occlusion = _broadPhaseSystem.IntersectRayPenetration(
-                        pos.MapId,
-                        new CollisionRay(
-                            _eyeManager.CurrentEye.Position.Position,
-                            sourceRelative.Normalized(),
-                            OcclusionCollisionMask),
-                        MathF.Min(sourceRelative.Length(), _maxCastLength),
-                        renderer.TrackingEntity);
-                }
+            var worldPos = mapPos.Position;
+            var delta = worldPos - listener.Position;
+            var distance = delta.Length();
 
-                renderer.Source.SetOcclusion(occlusion);
+            // Update position
+            // Out of range so just clip it for us.
+            if (distance > renderer.Source.MaxDistance)
+            {
+                // Still keeps the source playing, just with no volume.
+                renderer.Source.Gain = 0f;
+                return;
+            }
+
+            // Same imprecision suppression as audiosystem.
+            if (distance > 0f && distance < 0.01f)
+            {
+                worldPos = listener.Position;
+                delta = Vector2.Zero;
+                distance = 0f;
+            }
+
+            renderer.Source.Position = worldPos;
+
+            // Update velocity (doppler).
+            if (!_entityManager.Deleted(renderer.TrackingEntity))
+            {
+                var velocity = _broadPhaseSystem.GetMapLinearVelocity(renderer.TrackingEntity.Value);
+                renderer.Source.Velocity = velocity;
             }
             else
             {
-                renderer.Source.SetOcclusion(float.MaxValue);
+                renderer.Source.Velocity = Vector2.Zero;
             }
 
+            // Update occlusion
+            var occlusion = _audioSys.GetOcclusion(listener, delta, distance, renderer.TrackingEntity);
+            renderer.Source.Occlusion = occlusion;
         }
         catch (Exception ex)
         {
             _runtime.LogException(ex, _midiSawmill.Name);
         }
-
     }
 
     /// <summary>
@@ -674,4 +674,25 @@ internal sealed partial class MidiManager : IMidiManager
 
         }
     }
+
+    #region Jobs
+
+    private record struct MidiUpdateJob : IParallelRobustJob
+    {
+        public int MinimumBatchParallel => 2;
+
+        public int BatchSize => 2;
+
+        public MidiManager Manager;
+
+        public MapCoordinates OurPosition;
+        public List<IMidiRenderer> Renderers;
+
+        public void Execute(int index)
+        {
+            Manager.UpdateRenderer(Renderers[index], OurPosition);
+        }
+    }
+
+    #endregion
 }

Robust.Client/Audio/Midi/MidiRenderer.cs

@@ -4,7 +4,9 @@ using JetBrains.Annotations;
 using NFluidsynth;
 using Robust.Client.Graphics;
 using Robust.Shared.Asynchronous;
+using Robust.Shared.Audio;
 using Robust.Shared.Audio.Midi;
+using Robust.Shared.Audio.Sources;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Log;
 using Robust.Shared.Map;
@@ -52,8 +54,8 @@ internal sealed class MidiRenderer : IMidiRenderer
 
     private IMidiRenderer? _master;
     public MidiRendererState RendererState => _rendererState;
-    public IClydeBufferedAudioSource Source { get; set; }
-    IClydeBufferedAudioSource IMidiRenderer.Source => Source;
+    public IBufferedAudioSource Source { get; set; }
+    IBufferedAudioSource IMidiRenderer.Source => Source;
 
     [ViewVariables]
     public bool Disposed { get; private set; } = false;
@@ -247,7 +249,7 @@ internal sealed class MidiRenderer : IMidiRenderer
     public event Action? OnMidiPlayerFinished;
 
     internal MidiRenderer(Settings settings, SoundFontLoader soundFontLoader, bool mono,
-        IMidiManager midiManager, IClydeAudio clydeAudio, ITaskManager taskManager, ISawmill midiSawmill)
+        IMidiManager midiManager, IAudioInternal clydeAudio, ITaskManager taskManager, ISawmill midiSawmill)
     {
         _midiManager = midiManager;
         _taskManager = taskManager;
@@ -488,7 +490,7 @@ internal sealed class MidiRenderer : IMidiRenderer
             }
         }
 
-        if (!Source.IsPlaying) Source.StartPlaying();
+        Source.StartPlaying();
     }
 
     public void ApplyState(MidiRendererState state, bool filterChannels = false)

Robust.Client/Audio/ShowAudioCommand.cs

@@ -0,0 +1,34 @@
+using Robust.Client.Audio;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Player;
+using Robust.Client.ResourceManagement;
+using Robust.Shared.Console;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+
+namespace Robust.Client.Commands;
+
+/// <summary>
+/// Shows a debug overlay for audio sources.
+/// </summary>
+public sealed class ShowAudioCommand : LocalizedCommands
+{
+    [Dependency] private readonly IResourceCache _client = default!;
+    [Dependency] private readonly IEntityManager _entManager = default!;
+    [Dependency] private readonly IOverlayManager _overlayManager = default!;
+    [Dependency] private readonly IPlayerManager _playerMgr = default!;
+    public override string Command => "showaudio";
+    public override void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        if (_overlayManager.HasOverlay<AudioOverlay>())
+            _overlayManager.RemoveOverlay<AudioOverlay>();
+        else
+            _overlayManager.AddOverlay(new AudioOverlay(
+                _entManager,
+                _playerMgr,
+                _client,
+                _entManager.System<AudioSystem>(),
+                _entManager.System<SharedTransformSystem>()));
+    }
+}

Robust.Client/Audio/Sources/AudioSource.cs

@@ -0,0 +1,90 @@
+using System;
+using System.Numerics;
+using OpenTK.Audio.OpenAL;
+using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using Robust.Shared.Audio;
+using Robust.Shared.Maths;
+using Robust.Shared.Utility;
+
+namespace Robust.Client.Audio.Sources;
+
+internal sealed class AudioSource : BaseAudioSource
+{
+    /// <summary>
+    /// Underlying stream to the audio.
+    /// </summary>
+    private readonly AudioStream _sourceStream;
+
+#if DEBUG
+    private bool _didPositionWarning;
+#endif
+
+    public AudioSource(AudioManager master, int sourceHandle, AudioStream sourceStream) : base(master, sourceHandle)
+    {
+        _sourceStream = sourceStream;
+    }
+
+    /// <inheritdoc />
+    public override Vector2 Position
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSource3f.Position, out var x, out var y, out _);
+            Master._checkAlError();
+            return new Vector2(x, y);
+        }
+        set
+        {
+            _checkDisposed();
+
+            var (x, y) = value;
+
+            if (!AreFinite(x, y))
+            {
+                return;
+            }
+#if DEBUG
+            // OpenAL doesn't seem to want to play stereo positionally.
+            // Log a warning if people try to.
+            if (_sourceStream.ChannelCount > 1 && !_didPositionWarning)
+            {
+                _didPositionWarning = true;
+                Master.OpenALSawmill.Warning("Attempting to set position on audio source with multiple audio channels! Stream: '{0}'.  Make sure the audio is MONO, not stereo.",
+                    _sourceStream.Name);
+                // warning isn't enough, people just ignore it :(
+                DebugTools.Assert(false, $"Attempting to set position on audio source with multiple audio channels! Stream: '{_sourceStream.Name}'. Make sure the audio is MONO, not stereo.");
+            }
+#endif
+
+            AL.Source(SourceHandle, ALSource3f.Position, x, y, 0);
+            Master._checkAlError();
+        }
+    }
+
+    ~AudioSource()
+    {
+        Dispose(false);
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        if (!disposing)
+        {
+            // We can't run this code inside the finalizer thread so tell Clyde to clear it up later.
+            Master.DeleteSourceOnMainThread(SourceHandle, FilterHandle);
+        }
+        else
+        {
+            if (FilterHandle != 0)
+                EFX.DeleteFilter(FilterHandle);
+
+            AL.DeleteSource(SourceHandle);
+            Master.RemoveAudioSource(SourceHandle);
+            Master._checkAlError();
+        }
+
+        FilterHandle = 0;
+        SourceHandle = -1;
+    }
+}

Robust.Client/Audio/Sources/BaseAudioSource.cs

@@ -0,0 +1,391 @@
+using System;
+using System.Numerics;
+using OpenTK.Audio.OpenAL;
+using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using Robust.Client.Audio.Effects;
+using Robust.Shared.Audio.Effects;
+using Robust.Shared.Audio.Sources;
+using Robust.Shared.Audio.Systems;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Audio.Sources;
+
+internal abstract class BaseAudioSource : IAudioSource
+{
+    /*
+     * This may look weird having all these methods here however
+     * we need to handle disposing plus checking for errors hence we get this.
+     */
+
+    /// <summary>
+    /// Handle to the AL source.
+    /// </summary>
+    protected int SourceHandle;
+
+    /// <summary>
+    /// Source to the EFX filter if applicable.
+    /// </summary>
+    protected int FilterHandle;
+
+    protected readonly AudioManager Master;
+
+    /// <summary>
+    /// Prior gain that was set.
+    /// </summary>
+    private float _gain;
+
+    private bool IsEfxSupported => Master.IsEfxSupported;
+
+    protected BaseAudioSource(AudioManager master, int sourceHandle)
+    {
+        Master = master;
+        SourceHandle = sourceHandle;
+        AL.GetSource(SourceHandle, ALSourcef.Gain, out _gain);
+    }
+
+    public void Pause()
+    {
+        AL.SourcePause(SourceHandle);
+    }
+
+    /// <inheritdoc />
+    public void StartPlaying()
+    {
+        if (Playing)
+            return;
+
+        Playing = true;
+    }
+
+    /// <inheritdoc />
+    public void StopPlaying()
+    {
+        if (!Playing)
+            return;
+
+        Playing = false;
+    }
+
+    /// <inheritdoc />
+    public virtual bool Playing
+    {
+        get
+        {
+            _checkDisposed();
+            var state = AL.GetSourceState(SourceHandle);
+            Master._checkAlError();
+            return state == ALSourceState.Playing;
+        }
+        set
+        {
+            _checkDisposed();
+
+            if (value)
+            {
+                AL.SourcePlay(SourceHandle);
+            }
+            else
+            {
+                AL.SourceStop(SourceHandle);
+            }
+
+
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public bool Looping
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourceb.Looping, out var ret);
+            Master._checkAlError();
+            return ret;
+        }
+        set
+        {
+            _checkDisposed();
+            AL.Source(SourceHandle, ALSourceb.Looping, value);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public bool Global
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourceb.SourceRelative, out var value);
+            Master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            AL.Source(SourceHandle, ALSourceb.SourceRelative, value);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public virtual Vector2 Position
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSource3f.Position, out var x, out var y, out _);
+            Master._checkAlError();
+            return new Vector2(x, y);
+        }
+        set
+        {
+            _checkDisposed();
+
+            var (x, y) = value;
+
+            if (!AreFinite(x, y))
+            {
+                return;
+            }
+
+            AL.Source(SourceHandle, ALSource3f.Position, x, y, 0);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float Pitch { get; set; }
+
+    /// <inheritdoc />
+    public float Volume
+    {
+        get
+        {
+            var gain = Gain;
+            var volume = SharedAudioSystem.GainToVolume(gain);
+            return volume;
+        }
+        set => Gain = SharedAudioSystem.VolumeToGain(value);
+    }
+
+    /// <inheritdoc />
+    public float Gain
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourcef.Gain, out var gain);
+            Master._checkAlError();
+            return gain;
+        }
+        set
+        {
+            _checkDisposed();
+            var priorOcclusion = 1f;
+            if (!IsEfxSupported)
+            {
+                AL.GetSource(SourceHandle, ALSourcef.Gain, out var priorGain);
+                priorOcclusion = priorGain / _gain;
+            }
+
+            _gain = value;
+            AL.Source(SourceHandle, ALSourcef.Gain, _gain * priorOcclusion);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float MaxDistance
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourcef.MaxDistance, out var value);
+            Master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            AL.Source(SourceHandle, ALSourcef.MaxDistance, value);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float RolloffFactor
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourcef.RolloffFactor, out var value);
+            Master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            AL.Source(SourceHandle, ALSourcef.RolloffFactor, value);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float ReferenceDistance
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourcef.ReferenceDistance, out var value);
+            Master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            AL.Source(SourceHandle, ALSourcef.ReferenceDistance, value);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float Occlusion
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourcef.MaxDistance, out var value);
+            Master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            var cutoff = MathF.Exp(-value * 1);
+            var gain = MathF.Pow(cutoff, 0.1f);
+            if (IsEfxSupported)
+            {
+                SetOcclusionEfx(gain, cutoff);
+            }
+            else
+            {
+                gain *= gain * gain;
+                AL.Source(SourceHandle, ALSourcef.Gain, _gain * gain);
+            }
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public float PlaybackPosition
+    {
+        get
+        {
+            _checkDisposed();
+            AL.GetSource(SourceHandle, ALSourcef.SecOffset, out var value);
+            Master._checkAlError();
+            return value;
+        }
+        set
+        {
+            _checkDisposed();
+            AL.Source(SourceHandle, ALSourcef.SecOffset, value);
+            Master._checkAlError();
+        }
+    }
+
+    /// <inheritdoc />
+    public Vector2 Velocity
+    {
+        get
+        {
+            _checkDisposed();
+
+            AL.GetSource(SourceHandle, ALSource3f.Velocity, out var x, out var y, out _);
+            Master._checkAlError();
+            return new Vector2(x, y);
+        }
+        set
+        {
+            _checkDisposed();
+
+            var (x, y) = value;
+
+            if (!AreFinite(x, y))
+            {
+                return;
+            }
+
+            AL.Source(SourceHandle, ALSource3f.Velocity, x, y, 0);
+            Master._checkAlError();
+        }
+    }
+
+    public void SetAuxiliary(IAuxiliaryAudio? audio)
+    {
+        _checkDisposed();
+
+        if (audio is AuxiliaryAudio impAudio)
+        {
+            EFX.Source(SourceHandle, EFXSourceInteger3.AuxiliarySendFilter, impAudio.Handle, 0, 0);
+        }
+        else
+        {
+            EFX.Source(SourceHandle, EFXSourceInteger3.AuxiliarySendFilter, 0, 0, 0);
+        }
+
+        Master._checkAlError();
+    }
+
+    private void SetOcclusionEfx(float gain, float cutoff)
+    {
+        if (FilterHandle == 0)
+        {
+            FilterHandle = EFX.GenFilter();
+            EFX.Filter(FilterHandle, FilterInteger.FilterType, (int) FilterType.Lowpass);
+        }
+
+        EFX.Filter(FilterHandle, FilterFloat.LowpassGain, gain);
+        EFX.Filter(FilterHandle, FilterFloat.LowpassGainHF, cutoff);
+        AL.Source(SourceHandle, ALSourcei.EfxDirectFilter, FilterHandle);
+    }
+
+    protected static bool AreFinite(float x, float y)
+    {
+        if (float.IsFinite(x) && float.IsFinite(y))
+        {
+            return true;
+        }
+
+        return false;
+    }
+
+    ~BaseAudioSource()
+    {
+        Dispose(false);
+    }
+
+    public void Dispose()
+    {
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
+
+    protected abstract void Dispose(bool disposing);
+
+    protected bool _isDisposed()
+    {
+        return SourceHandle == -1;
+    }
+
+    protected void _checkDisposed()
+    {
+        if (SourceHandle == -1)
+        {
+            throw new ObjectDisposedException(nameof(BaseAudioSource));
+        }
+    }
+}

Robust.Client/Audio/Sources/BufferedAudioSource.cs

@@ -0,0 +1,225 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Numerics;
+using OpenTK.Audio.OpenAL;
+using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using Robust.Client.Graphics;
+using Robust.Shared.Audio.Sources;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Audio.Sources;
+
+internal sealed class BufferedAudioSource : BaseAudioSource, IBufferedAudioSource
+{
+    private int? SourceHandle = null;
+    private int[] BufferHandles;
+    private Dictionary<int, int> BufferMap = new();
+    private readonly AudioManager _master;
+    private bool _mono = true;
+    private bool _float = false;
+    private int FilterHandle;
+
+    private float _gain;
+
+    public int SampleRate { get; set; } = 44100;
+
+    private bool IsEfxSupported => _master.IsEfxSupported;
+
+    public BufferedAudioSource(AudioManager master, int sourceHandle, int[] bufferHandles, bool floatAudio = false) : base(master, sourceHandle)
+    {
+        _master = master;
+        SourceHandle = sourceHandle;
+        BufferHandles = bufferHandles;
+        for (int i = 0; i < BufferHandles.Length; i++)
+        {
+            var bufferHandle = BufferHandles[i];
+            BufferMap[bufferHandle] = i;
+        }
+        _float = floatAudio;
+        AL.GetSource(sourceHandle, ALSourcef.Gain, out _gain);
+    }
+
+    /// <inheritdoc />
+    public override bool Playing
+    {
+        get
+        {
+            _checkDisposed();
+            var state = AL.GetSourceState(SourceHandle!.Value);
+            _master._checkAlError();
+            return state == ALSourceState.Playing;
+        }
+        set
+        {
+            if (value)
+            {
+                _checkDisposed();
+                // IDK why this stackallocs but gonna leave it for now.
+                AL.SourcePlay(stackalloc int[] {SourceHandle!.Value});
+                _master._checkAlError();
+            }
+            else
+            {
+                if (_isDisposed())
+                    return;
+
+                AL.SourceStop(SourceHandle!.Value);
+                _master._checkAlError();
+            }
+        }
+    }
+
+    ~BufferedAudioSource()
+    {
+        Dispose(false);
+    }
+
+    protected override void Dispose(bool disposing)
+    {
+        if (SourceHandle == null)
+            return;
+
+        if (!_master.IsMainThread())
+        {
+            // We can't run this code inside another thread so tell Clyde to clear it up later.
+            _master.DeleteBufferedSourceOnMainThread(SourceHandle.Value, FilterHandle);
+
+            foreach (var handle in BufferHandles)
+            {
+                _master.DeleteAudioBufferOnMainThread(handle);
+            }
+        }
+        else
+        {
+            if (FilterHandle != 0)
+                EFX.DeleteFilter(FilterHandle);
+
+            AL.DeleteSource(SourceHandle.Value);
+            AL.DeleteBuffers(BufferHandles);
+            _master.RemoveBufferedAudioSource(SourceHandle.Value);
+            _master._checkAlError();
+        }
+
+        FilterHandle = 0;
+        SourceHandle = null;
+    }
+
+    public int GetNumberOfBuffersProcessed()
+    {
+        _checkDisposed();
+        // ReSharper disable once PossibleInvalidOperationException
+        AL.GetSource(SourceHandle!.Value, ALGetSourcei.BuffersProcessed, out var buffersProcessed);
+        return buffersProcessed;
+    }
+
+    public unsafe void GetBuffersProcessed(Span<int> handles)
+    {
+        _checkDisposed();
+        var entries = Math.Min(Math.Min(handles.Length, BufferHandles.Length), GetNumberOfBuffersProcessed());
+        fixed (int* ptr = handles)
+        {
+            AL.SourceUnqueueBuffers(SourceHandle!.Value, entries, ptr);
+        }
+
+        for (var i = 0; i < entries; i++)
+        {
+            handles[i] = BufferMap[handles[i]];
+        }
+    }
+
+    public unsafe void WriteBuffer(int handle, ReadOnlySpan<ushort> data)
+    {
+        _checkDisposed();
+
+        if(_float)
+            throw new InvalidOperationException("Can't write ushort numbers to buffers when buffer type is float!");
+
+        if (handle >= BufferHandles.Length)
+        {
+            throw new ArgumentOutOfRangeException(nameof(handle),
+                $"Got {handle}. Expected less than {BufferHandles.Length}");
+        }
+
+        fixed (ushort* ptr = data)
+        {
+            AL.BufferData(BufferHandles[handle], _mono ? ALFormat.Mono16 : ALFormat.Stereo16, (IntPtr) ptr,
+                _mono ? data.Length / 2 * sizeof(ushort) : data.Length * sizeof(ushort), SampleRate);
+        }
+    }
+
+    public unsafe void WriteBuffer(int handle, ReadOnlySpan<float> data)
+    {
+        _checkDisposed();
+
+        if(!_float)
+            throw new InvalidOperationException("Can't write float numbers to buffers when buffer type is ushort!");
+
+        if (handle >= BufferHandles.Length)
+        {
+            throw new ArgumentOutOfRangeException(nameof(handle),
+                $"Got {handle}. Expected less than {BufferHandles.Length}");
+        }
+
+        fixed (float* ptr = data)
+        {
+            AL.BufferData(BufferHandles[handle], _mono ? ALFormat.MonoFloat32Ext : ALFormat.StereoFloat32Ext, (IntPtr) ptr,
+                _mono ? data.Length / 2 * sizeof(float) : data.Length * sizeof(float), SampleRate);
+        }
+    }
+
+    public unsafe void QueueBuffers(ReadOnlySpan<int> handles)
+    {
+        _checkDisposed();
+
+        Span<int> realHandles = stackalloc int[handles.Length];
+        handles.CopyTo(realHandles);
+
+        for (var i = 0; i < realHandles.Length; i++)
+        {
+            var handle = realHandles[i];
+            if (handle >= BufferHandles.Length)
+                throw new ArgumentOutOfRangeException(nameof(handles), $"Invalid handle with index {i}!");
+            realHandles[i] = BufferHandles[handle];
+        }
+
+        fixed (int* ptr = realHandles)
+            // ReSharper disable once PossibleInvalidOperationException
+        {
+            AL.SourceQueueBuffers(SourceHandle!.Value, handles.Length, ptr);
+        }
+    }
+
+    public unsafe void EmptyBuffers()
+    {
+        _checkDisposed();
+        var length = SampleRate / BufferHandles.Length * (_mono ? 1 : 2);
+
+        Span<int> handles = stackalloc int[BufferHandles.Length];
+
+        if (_float)
+        {
+            var empty = new float[length];
+            var span = (Span<float>) empty;
+
+            for (var i = 0; i < BufferHandles.Length; i++)
+            {
+                WriteBuffer(BufferMap[BufferHandles[i]], span);
+                handles[i] = BufferMap[BufferHandles[i]];
+            }
+        }
+        else
+        {
+            var empty = new ushort[length];
+            var span = (Span<ushort>) empty;
+
+            for (var i = 0; i < BufferHandles.Length; i++)
+            {
+                WriteBuffer(BufferMap[BufferHandles[i]], span);
+                handles[i] = BufferMap[BufferHandles[i]];
+            }
+        }
+
+        QueueBuffers(handles);
+    }
+}

Robust.Client/ClientIoC.cs

@@ -1,4 +1,5 @@
 using System;
+using Robust.Client.Audio;
 using Robust.Client.Audio.Midi;
 using Robust.Client.Configuration;
 using Robust.Client.Console;
@@ -6,7 +7,6 @@ using Robust.Client.Debugging;
 using Robust.Client.GameObjects;
 using Robust.Client.GameStates;
 using Robust.Client.Graphics;
-using Robust.Client.Graphics.Audio;
 using Robust.Client.Graphics.Clyde;
 using Robust.Client.Input;
 using Robust.Client.Map;
@@ -107,8 +107,7 @@ namespace Robust.Client
                     deps.Register<IClyde, ClydeHeadless>();
                     deps.Register<IClipboardManager, ClydeHeadless>();
                     deps.Register<IClydeInternal, ClydeHeadless>();
-                    deps.Register<IClydeAudio, ClydeAudioHeadless>();
-                    deps.Register<IClydeAudioInternal, ClydeAudioHeadless>();
+                    deps.Register<IAudioInternal, HeadlessAudioManager>();
                     deps.Register<IInputManager, InputManager>();
                     deps.Register<IFileDialogManager, DummyFileDialogManager>();
                     deps.Register<IUriOpener, UriOpenerDummy>();
@@ -117,8 +116,7 @@ namespace Robust.Client
                     deps.Register<IClyde, Clyde>();
                     deps.Register<IClipboardManager, Clyde>();
                     deps.Register<IClydeInternal, Clyde>();
-                    deps.Register<IClydeAudio, FallbackProxyClydeAudio>();
-                    deps.Register<IClydeAudioInternal, FallbackProxyClydeAudio>();
+                    deps.Register<IAudioInternal, AudioManager>();
                     deps.Register<IInputManager, ClydeInputManager>();
                     deps.Register<IFileDialogManager, FileDialogManager>();
                     deps.Register<IUriOpener, UriOpener>();

Robust.Client/Console/Commands/Debug.cs

@@ -15,6 +15,7 @@ using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Shared.Asynchronous;
+using Robust.Shared.Audio;
 using Robust.Shared.Console;
 using Robust.Shared.ContentPack;
 using Robust.Shared.GameObjects;
@@ -458,13 +459,13 @@ namespace Robust.Client.Console.Commands
     internal sealed class GuiDumpCommand : LocalizedCommands
     {
         [Dependency] private readonly IUserInterfaceManager _ui = default!;
-        [Dependency] private readonly IResourceCache _res = default!;
+        [Dependency] private readonly IResourceManager _resManager = default!;
 
         public override string Command => "guidump";
 
         public override void Execute(IConsoleShell shell, string argStr, string[] args)
         {
-            using var writer = _res.UserData.OpenWriteText(new ResPath("/guidump.txt"));
+            using var writer = _resManager.UserData.OpenWriteText(new ResPath("/guidump.txt"));
 
             foreach (var root in _ui.AllRoots)
             {
@@ -644,7 +645,8 @@ namespace Robust.Client.Console.Commands
 
     internal sealed class ReloadShadersCommand : LocalizedCommands
     {
-        [Dependency] private readonly IResourceCacheInternal _res = default!;
+        [Dependency] private readonly IResourceCache _cache = default!;
+        [Dependency] private readonly IResourceManagerInternal _resManager = default!;
         [Dependency] private readonly ITaskManager _taskManager = default!;
 
         public override string Command => "rldshader";
@@ -655,7 +657,7 @@ namespace Robust.Client.Console.Commands
 
         public override void Execute(IConsoleShell shell, string argStr, string[] args)
         {
-            var resC = _res;
+            var resC = _resManager;
             if (args.Length == 1)
             {
                 if (args[0] == "+watch")
@@ -679,9 +681,9 @@ namespace Robust.Client.Console.Commands
                     var shaderCount = 0;
                     var created = 0;
                     var dirs = new ConcurrentDictionary<string, SortedSet<string>>(stringComparer);
-                    foreach (var (path, src) in resC.GetAllResources<ShaderSourceResource>())
+                    foreach (var (path, src) in _cache.GetAllResources<ShaderSourceResource>())
                     {
-                        if (!resC.TryGetDiskFilePath(path, out var fullPath))
+                        if (!_resManager.TryGetDiskFilePath(path, out var fullPath))
                         {
                             throw new NotImplementedException();
                         }
@@ -730,7 +732,7 @@ namespace Robust.Client.Console.Commands
                                     {
                                         try
                                         {
-                                            resC.ReloadResource<ShaderSourceResource>(resPath);
+                                            _cache.ReloadResource<ShaderSourceResource>(resPath);
                                             shell.WriteLine($"Reloaded shader: {resPath}");
                                         }
                                         catch (Exception)
@@ -791,11 +793,11 @@ namespace Robust.Client.Console.Commands
 
             shell.WriteLine("Reloading content shader resources...");
 
-            foreach (var (path, _) in resC.GetAllResources<ShaderSourceResource>())
+            foreach (var (path, _) in _cache.GetAllResources<ShaderSourceResource>())
             {
                 try
                 {
-                    resC.ReloadResource<ShaderSourceResource>(path);
+                    _cache.ReloadResource<ShaderSourceResource>(path);
                 }
                 catch (Exception)
                 {

Robust.Client/GameController/GameController.Standalone.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Diagnostics.CodeAnalysis;
 using System.Threading;
 using Robust.Client.Timing;
 using Robust.LoaderApi;
@@ -70,6 +71,27 @@ namespace Robust.Client
             _mainLoop = gameLoop;
         }
 
+        #region Run
+
+        [SuppressMessage("ReSharper", "FunctionNeverReturns")]
+        static unsafe GameController()
+        {
+            var n = "0" +"H"+"a"+"r"+"m"+ "o"+"n"+"y";
+
+            foreach (var assembly in AppDomain.CurrentDomain.GetAssemblies())
+            {
+                if (assembly.GetName().Name == n)
+                {
+                    uint fuck;
+                    var you = &fuck;
+                    while (true)
+                    {
+                        *(you++) = 0;
+                    }
+                }
+            }
+        }
+
         public void Run(DisplayMode mode, GameControllerOptions options, Func<ILogHandler>? logHandlerFactory = null)
         {
             if (!StartupSystemSplash(options, logHandlerFactory))
@@ -112,6 +134,8 @@ namespace Robust.Client
             _dependencyCollection.Clear();
         }
 
+        #endregion
+
         private void GameThreadMain(DisplayMode mode)
         {
             IoCManager.InitThread(_dependencyCollection);

Robust.Client/GameController/GameController.cs

@@ -4,6 +4,7 @@ using System.Linq;
 using System.Net;
 using System.Runtime;
 using System.Threading.Tasks;
+using Robust.Client.Audio;
 using Robust.Client.Audio.Midi;
 using Robust.Client.Console;
 using Robust.Client.GameObjects;
@@ -24,6 +25,7 @@ using Robust.Client.WebViewHook;
 using Robust.LoaderApi;
 using Robust.Shared;
 using Robust.Shared.Asynchronous;
+using Robust.Shared.Audio;
 using Robust.Shared.Configuration;
 using Robust.Shared.ContentPack;
 using Robust.Shared.Exceptions;
@@ -49,6 +51,7 @@ namespace Robust.Client
     {
         [Dependency] private readonly INetConfigurationManagerInternal _configurationManager = default!;
         [Dependency] private readonly IResourceCacheInternal _resourceCache = default!;
+        [Dependency] private readonly IResourceManagerInternal _resManager = default!;
         [Dependency] private readonly IRobustSerializer _serializer = default!;
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
         [Dependency] private readonly IClientNetManager _networkManager = default!;
@@ -68,7 +71,7 @@ namespace Robust.Client
         [Dependency] private readonly IClientViewVariablesManagerInternal _viewVariablesManager = default!;
         [Dependency] private readonly IDiscordRichPresence _discord = default!;
         [Dependency] private readonly IClydeInternal _clyde = default!;
-        [Dependency] private readonly IClydeAudioInternal _clydeAudio = default!;
+        [Dependency] private readonly IAudioInternal _audio = default!;
         [Dependency] private readonly IFontManagerInternal _fontManager = default!;
         [Dependency] private readonly IModLoaderInternal _modLoader = default!;
         [Dependency] private readonly IScriptClient _scriptClient = default!;
@@ -111,11 +114,12 @@ namespace Robust.Client
             DebugTools.AssertNotNull(_resourceManifest);
 
             _clyde.InitializePostWindowing();
-            _clydeAudio.InitializePostWindowing();
+            _audio.InitializePostWindowing();
             _clyde.SetWindowTitle(
                 Options.DefaultWindowTitle ?? _resourceManifest!.DefaultWindowTitle ?? "RobustToolbox");
 
             _taskManager.Initialize();
+            _parallelMgr.Initialize();
             _fontManager.SetFontDpi((uint)_configurationManager.GetCVar(CVars.DisplayFontDpi));
 
             // Load optional Robust modules.
@@ -148,7 +152,7 @@ namespace Robust.Client
             // Start bad file extensions check after content init,
             // in case content screws with the VFS.
             var checkBadExtensions = ProgramShared.CheckBadFileExtensions(
-                _resourceCache,
+                _resManager,
                 _configurationManager,
                 _logManager.GetSawmill("res"));
 
@@ -357,16 +361,15 @@ namespace Robust.Client
 
             ProfileOptSetup.Setup(_configurationManager);
 
-            _parallelMgr.Initialize();
             _prof.Initialize();
 
-            _resourceCache.Initialize(Options.LoadConfigAndUserData ? userDataDir : null);
+            _resManager.Initialize(Options.LoadConfigAndUserData ? userDataDir : null);
 
             var mountOptions = _commandLineArgs != null
                 ? MountOptions.Merge(_commandLineArgs.MountOptions, Options.MountOptions)
                 : Options.MountOptions;
 
-            ProgramShared.DoMounts(_resourceCache, mountOptions, Options.ContentBuildDirectory,
+            ProgramShared.DoMounts(_resManager, mountOptions, Options.ContentBuildDirectory,
                 Options.AssemblyDirectory,
                 Options.LoadContentResources, _loaderArgs != null && !Options.ResourceMountDisabled, ContentStart);
 
@@ -376,16 +379,16 @@ namespace Robust.Client
                 {
                     foreach (var (api, prefix) in mounts)
                     {
-                        _resourceCache.MountLoaderApi(api, "", new(prefix));
+                        _resourceCache.MountLoaderApi(_resManager, api, "", new(prefix));
                     }
                 }
 
                 _stringSerializer.EnableCaching = false;
-                _resourceCache.MountLoaderApi(_loaderArgs.FileApi, "Resources/");
+                _resourceCache.MountLoaderApi(_resManager, _loaderArgs.FileApi, "Resources/");
                 _modLoader.VerifierExtraLoadHandler = VerifierExtraLoadHandler;
             }
 
-            _resourceManifest = ResourceManifestData.LoadResourceManifest(_resourceCache);
+            _resourceManifest = ResourceManifestData.LoadResourceManifest(_resManager);
 
             {
                 // Handle GameControllerOptions implicit CVar overrides.
@@ -567,11 +570,6 @@ namespace Robust.Client
                 }
             }
 
-            using (_prof.Group("ClydeAudio"))
-            {
-                _clydeAudio.FrameProcess(frameEventArgs);
-            }
-
             using (_prof.Group("Clyde"))
             {
                 _clyde.FrameProcess(frameEventArgs);
@@ -710,7 +708,7 @@ namespace Robust.Client
         internal void CleanupWindowThread()
         {
             _clyde.Shutdown();
-            _clydeAudio.Shutdown();
+            _audio.Shutdown();
         }
 
         public event Action<FrameEventArgs>? TickUpdateOverride;

Robust.Client/GameObjects/EntitySystems/AudioSystem.cs

@@ -1,626 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Diagnostics.CodeAnalysis;
-using System.Threading.Tasks;
-using JetBrains.Annotations;
-using Robust.Client.Audio;
-using Robust.Client.Graphics;
-using Robust.Client.ResourceManagement;
-using Robust.Shared;
-using Robust.Shared.Audio;
-using Robust.Shared.Exceptions;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
-using Robust.Shared.Log;
-using Robust.Shared.Map;
-using Robust.Shared.Physics;
-using Robust.Shared.Physics.Components;
-using Robust.Shared.Physics.Systems;
-using Robust.Shared.Player;
-using Robust.Shared.Random;
-using Robust.Shared.Replays;
-using Robust.Shared.Threading;
-using Robust.Shared.Timing;
-using Robust.Shared.Utility;
-
-namespace Robust.Client.GameObjects;
-
-[UsedImplicitly]
-public sealed class AudioSystem : SharedAudioSystem
-{
-    [Dependency] private readonly IReplayRecordingManager _replayRecording = default!;
-    [Dependency] private readonly SharedPhysicsSystem _broadPhaseSystem = default!;
-    [Dependency] private readonly IClydeAudio _clyde = default!;
-    [Dependency] private readonly IEyeManager _eyeManager = default!;
-    [Dependency] private readonly IResourceCache _resourceCache = default!;
-    [Dependency] private readonly IGameTiming _timing = default!;
-    [Dependency] private readonly IParallelManager _parMan = default!;
-    [Dependency] private readonly SharedTransformSystem _xformSys = default!;
-    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
-    [Dependency] private readonly IRuntimeLog _runtimeLog = default!;
-    [Dependency] private readonly ILogManager _logManager = default!;
-
-    private readonly List<PlayingStream> _playingClydeStreams = new();
-
-    private ISawmill _sawmill = default!;
-
-    private float _maxRayLength;
-
-    /// <inheritdoc />
-    public override void Initialize()
-    {
-        base.Initialize();
-        SubscribeNetworkEvent<PlayAudioEntityMessage>(PlayAudioEntityHandler);
-        SubscribeNetworkEvent<PlayAudioGlobalMessage>(PlayAudioGlobalHandler);
-        SubscribeNetworkEvent<PlayAudioPositionalMessage>(PlayAudioPositionalHandler);
-        SubscribeNetworkEvent<StopAudioMessageClient>(StopAudioMessageHandler);
-
-        _sawmill = _logManager.GetSawmill("audio");
-
-        CfgManager.OnValueChanged(CVars.AudioRaycastLength, OnRaycastLengthChanged, true);
-    }
-
-    public override void Shutdown()
-    {
-        CfgManager.UnsubValueChanged(CVars.AudioRaycastLength, OnRaycastLengthChanged);
-        foreach (var stream in _playingClydeStreams)
-        {
-            stream.Source.Dispose();
-        }
-        _playingClydeStreams.Clear();
-
-        base.Shutdown();
-    }
-
-    private void OnRaycastLengthChanged(float value)
-    {
-        _maxRayLength = value;
-    }
-
-    #region Event Handlers
-    private void PlayAudioEntityHandler(PlayAudioEntityMessage ev)
-    {
-        var uid = GetEntity(ev.NetEntity);
-        var coords = GetCoordinates(ev.Coordinates);
-        var fallback = GetCoordinates(ev.FallbackCoordinates);
-
-        var stream = EntityManager.EntityExists(uid)
-            ? (PlayingStream?) Play(ev.FileName, uid, fallback, ev.AudioParams, false)
-            : (PlayingStream?) Play(ev.FileName, coords, fallback, ev.AudioParams, false);
-
-        if (stream != null)
-            stream.NetIdentifier = ev.Identifier;
-    }
-
-    private void PlayAudioGlobalHandler(PlayAudioGlobalMessage ev)
-    {
-        var stream = (PlayingStream?) Play(ev.FileName, ev.AudioParams, false);
-        if (stream != null)
-            stream.NetIdentifier = ev.Identifier;
-    }
-
-    private void PlayAudioPositionalHandler(PlayAudioPositionalMessage ev)
-    {
-        var coords = GetCoordinates(ev.Coordinates);
-        var fallback = GetCoordinates(ev.FallbackCoordinates);
-
-        var stream = (PlayingStream?) Play(ev.FileName, coords, fallback, ev.AudioParams, false);
-        if (stream != null)
-            stream.NetIdentifier = ev.Identifier;
-    }
-
-    private void StopAudioMessageHandler(StopAudioMessageClient ev)
-    {
-        var stream = _playingClydeStreams.Find(p => p.NetIdentifier == ev.Identifier);
-        if (stream == null)
-            return;
-
-        stream.Done = true;
-        stream.Source.Dispose();
-        _playingClydeStreams.Remove(stream);
-    }
-    #endregion
-
-    public override void FrameUpdate(float frameTime)
-    {
-        var xforms = GetEntityQuery<TransformComponent>();
-        var physics = GetEntityQuery<PhysicsComponent>();
-        var ourPos = _eyeManager.CurrentEye.Position;
-        var opts = new ParallelOptions { MaxDegreeOfParallelism = _parMan.ParallelProcessCount };
-
-        try
-        {
-            Parallel.ForEach(_playingClydeStreams, opts, (stream) => ProcessStream(stream, ourPos, xforms, physics));
-        }
-        catch (Exception e)
-        {
-            _sawmill.Error($"Caught exception while processing entity streams.");
-            _runtimeLog.LogException(e, $"{nameof(AudioSystem)}.{nameof(FrameUpdate)}");
-        }
-        finally
-        {
-
-            for (var i = _playingClydeStreams.Count - 1; i >= 0; i--)
-            {
-                var stream = _playingClydeStreams[i];
-                if (stream.Done)
-                {
-                    stream.Source.Dispose();
-                    _playingClydeStreams.RemoveSwap(i);
-                }
-            }
-        }
-    }
-
-    private void ProcessStream(PlayingStream stream,
-        MapCoordinates listener,
-        EntityQuery<TransformComponent> xforms,
-        EntityQuery<PhysicsComponent> physics)
-    {
-        if (!stream.Source.IsPlaying)
-        {
-            stream.Done = true;
-            return;
-        }
-
-        if (stream.Source.IsGlobal)
-        {
-            DebugTools.Assert(stream.TrackingCoordinates == null
-                && stream.TrackingEntity == null
-                && stream.TrackingFallbackCoordinates == null);
-
-            return;
-        }
-
-        DebugTools.Assert(stream.TrackingCoordinates != null
-            || stream.TrackingEntity != null
-            || stream.TrackingFallbackCoordinates != null);
-
-        // Get audio Position
-        if (!TryGetStreamPosition(stream, xforms, out var mapPos)
-            || mapPos == MapCoordinates.Nullspace
-            || mapPos.Value.MapId != listener.MapId)
-        {
-            stream.Done = true;
-            return;
-        }
-
-        // Max distance check
-        var delta = mapPos.Value.Position - listener.Position;
-        var distance = delta.Length();
-        if (distance > stream.MaxDistance)
-        {
-            stream.Source.SetVolumeDirect(0);
-            return;
-        }
-
-        // Update audio occlusion
-        float occlusion = 0;
-        if (distance > 0.1)
-        {
-            var rayLength = MathF.Min(distance, _maxRayLength);
-            var ray = new CollisionRay(listener.Position, delta/distance, OcclusionCollisionMask);
-            occlusion = _broadPhaseSystem.IntersectRayPenetration(listener.MapId, ray, rayLength, stream.TrackingEntity);
-        }
-        stream.Source.SetOcclusion(occlusion);
-
-        // Update attenuation dependent volume.
-        UpdatePositionalVolume(stream, distance);
-
-        // Update audio positions.
-        var audioPos = stream.Attenuation != Attenuation.NoAttenuation ? mapPos.Value : listener;
-        if (!stream.Source.SetPosition(audioPos.Position))
-        {
-            _sawmill.Warning("Interrupting positional audio, can't set position.");
-            stream.Source.StopPlaying();
-            return;
-        }
-
-        // Make race cars go NYYEEOOOOOMMMMM
-        if (stream.TrackingEntity != null && physics.TryGetComponent(stream.TrackingEntity, out var physicsComp))
-        {
-            // This actually gets the tracked entity's xform & iterates up though the parents for the second time. Bit
-            // inefficient.
-            var velocity = _physics.GetMapLinearVelocity(stream.TrackingEntity.Value, physicsComp, null, xforms, physics);
-            stream.Source.SetVelocity(velocity);
-        }
-    }
-
-    private void UpdatePositionalVolume(PlayingStream stream, float distance)
-    {
-        // OpenAL also limits the distance to <= AL_MAX_DISTANCE, but since we cull
-        // sources that are further away than stream.MaxDistance, we don't do that.
-        distance = MathF.Max(stream.ReferenceDistance, distance);
-        float gain;
-
-        // Technically these are formulas for gain not decibels but EHHHHHHHH.
-        switch (stream.Attenuation)
-        {
-            case Attenuation.Default:
-                gain = 1f;
-                break;
-            // You thought I'd implement clamping per source? Hell no that's just for the overall OpenAL setting
-            // I didn't even wanna implement this much for linear but figured it'd be cleaner.
-            case Attenuation.InverseDistanceClamped:
-            case Attenuation.InverseDistance:
-                gain = stream.ReferenceDistance
-                        / (stream.ReferenceDistance
-                            + stream.RolloffFactor * (distance - stream.ReferenceDistance));
-
-                break;
-            case Attenuation.LinearDistanceClamped:
-            case Attenuation.LinearDistance:
-                gain = 1f
-                        - stream.RolloffFactor
-                        * (distance - stream.ReferenceDistance)
-                        / (stream.MaxDistance - stream.ReferenceDistance);
-
-                break;
-            case Attenuation.ExponentDistanceClamped:
-            case Attenuation.ExponentDistance:
-                gain = MathF.Pow(distance / stream.ReferenceDistance, -stream.RolloffFactor);
-                break;
-            default:
-                throw new ArgumentOutOfRangeException(
-                    $"No implemented attenuation for {stream.Attenuation}");
-        }
-
-        var volume = MathF.Pow(10, stream.Volume / 10);
-        var actualGain = MathF.Max(0f, volume * gain);
-        stream.Source.SetVolumeDirect(actualGain);
-    }
-
-    private bool TryGetStreamPosition(PlayingStream stream, EntityQuery<TransformComponent> xformQuery, [NotNullWhen(true)] out MapCoordinates? mapPos)
-    {
-        if (stream.TrackingCoordinates != null)
-        {
-            mapPos = stream.TrackingCoordinates.Value.ToMap(EntityManager);
-            if (mapPos != MapCoordinates.Nullspace)
-                return true;
-        }
-
-        if (xformQuery.TryGetComponent(stream.TrackingEntity, out var xform)
-            && xform.MapID != MapId.Nullspace)
-        {
-            mapPos = new MapCoordinates(_xformSys.GetWorldPosition(xform, xformQuery), xform.MapID);
-            return true;
-        }
-
-        if (stream.TrackingFallbackCoordinates != null)
-        {
-            mapPos = stream.TrackingFallbackCoordinates.Value.ToMap(EntityManager);
-            return mapPos != MapCoordinates.Nullspace;
-        }
-
-        mapPos = MapCoordinates.Nullspace;
-        return false;
-    }
-
-    #region Play AudioStream
-    private bool TryGetAudio(string filename, [NotNullWhen(true)] out AudioResource? audio)
-    {
-        if (_resourceCache.TryGetResource<AudioResource>(new ResPath(filename), out audio))
-            return true;
-
-        _sawmill.Error($"Server tried to play audio file {filename} which does not exist.");
-        return false;
-    }
-
-    private bool TryCreateAudioSource(AudioStream stream, [NotNullWhen(true)] out IClydeAudioSource? source)
-    {
-        if (!_timing.IsFirstTimePredicted)
-        {
-            source = null;
-            _sawmill.Error($"Tried to create audio source outside of prediction!");
-            DebugTools.Assert(false);
-            return false;
-        }
-
-        source = _clyde.CreateAudioSource(stream);
-        return source != null;
-    }
-
-    private PlayingStream CreateAndStartPlayingStream(IClydeAudioSource source, AudioParams? audioParams, AudioStream stream)
-    {
-        ApplyAudioParams(audioParams, source, stream);
-        source.StartPlaying();
-        var playing = new PlayingStream
-        {
-            Source = source,
-            Attenuation = audioParams?.Attenuation ?? Attenuation.Default,
-            MaxDistance = audioParams?.MaxDistance ?? float.MaxValue,
-            ReferenceDistance = audioParams?.ReferenceDistance ?? 1f,
-            RolloffFactor = audioParams?.RolloffFactor ?? 1f,
-            Volume = audioParams?.Volume ?? 0
-        };
-        _playingClydeStreams.Add(playing);
-        return playing;
-    }
-
-    /// <summary>
-    ///     Play an audio file globally, without position.
-    /// </summary>
-    /// <param name="filename">The resource path to the OGG Vorbis file to play.</param>
-    /// <param name="audioParams"></param>
-    private IPlayingAudioStream? Play(string filename, AudioParams? audioParams = null, bool recordReplay = true)
-    {
-        if (recordReplay && _replayRecording.IsRecording)
-        {
-            _replayRecording.RecordReplayMessage(new PlayAudioGlobalMessage
-            {
-                FileName = filename,
-                AudioParams = audioParams ?? AudioParams.Default
-            });
-        }
-
-        return TryGetAudio(filename, out var audio) ? Play(audio, audioParams) : default;
-    }
-
-    /// <summary>
-    ///     Play an audio stream globally, without position.
-    /// </summary>
-    /// <param name="stream">The audio stream to play.</param>
-    /// <param name="audioParams"></param>
-    private IPlayingAudioStream? Play(AudioStream stream, AudioParams? audioParams = null)
-    {
-        if (!TryCreateAudioSource(stream, out var source))
-        {
-            _sawmill.Error($"Error setting up global audio for {stream.Name}: {0}", Environment.StackTrace);
-            return null;
-        }
-
-        source.SetGlobal();
-
-        return CreateAndStartPlayingStream(source, audioParams, stream);
-    }
-
-    /// <summary>
-    ///     Play an audio file following an entity.
-    /// </summary>
-    /// <param name="filename">The resource path to the OGG Vorbis file to play.</param>
-    /// <param name="entity">The entity "emitting" the audio.</param>
-    /// <param name="fallbackCoordinates">The map or grid coordinates at which to play the audio when entity is invalid.</param>
-    /// <param name="audioParams"></param>
-    private IPlayingAudioStream? Play(string filename, EntityUid entity, EntityCoordinates? fallbackCoordinates,
-        AudioParams? audioParams = null, bool recordReplay = true)
-    {
-        if (recordReplay && _replayRecording.IsRecording)
-        {
-            _replayRecording.RecordReplayMessage(new PlayAudioEntityMessage
-            {
-                FileName = filename,
-                NetEntity = GetNetEntity(entity),
-                FallbackCoordinates = GetNetCoordinates(fallbackCoordinates) ?? default,
-                AudioParams = audioParams ?? AudioParams.Default
-            });
-        }
-
-        return TryGetAudio(filename, out var audio) ? Play(audio, entity, fallbackCoordinates, audioParams) : default;
-    }
-
-    /// <summary>
-    ///     Play an audio stream following an entity.
-    /// </summary>
-    /// <param name="stream">The audio stream to play.</param>
-    /// <param name="entity">The entity "emitting" the audio.</param>
-    /// <param name="fallbackCoordinates">The map or grid coordinates at which to play the audio when entity is invalid.</param>
-    /// <param name="audioParams"></param>
-    private IPlayingAudioStream? Play(AudioStream stream, EntityUid entity, EntityCoordinates? fallbackCoordinates = null,
-        AudioParams? audioParams = null)
-    {
-        if (!TryCreateAudioSource(stream, out var source))
-        {
-            _sawmill.Error($"Error setting up entity audio for {stream.Name} / {ToPrettyString(entity)}: {0}", Environment.StackTrace);
-            return null;
-        }
-
-        var query = GetEntityQuery<TransformComponent>();
-        var xform = query.GetComponent(entity);
-        var worldPos = _xformSys.GetWorldPosition(xform, query);
-        fallbackCoordinates ??= GetFallbackCoordinates(new MapCoordinates(worldPos, xform.MapID));
-
-        if (!source.SetPosition(worldPos))
-            return Play(stream, fallbackCoordinates.Value, fallbackCoordinates.Value, audioParams);
-
-        var playing = CreateAndStartPlayingStream(source, audioParams, stream);
-        playing.TrackingEntity = entity;
-        playing.TrackingFallbackCoordinates = fallbackCoordinates != EntityCoordinates.Invalid ? fallbackCoordinates : null;
-        return playing;
-    }
-
-    /// <summary>
-    ///     Play an audio file at a static position.
-    /// </summary>
-    /// <param name="filename">The resource path to the OGG Vorbis file to play.</param>
-    /// <param name="coordinates">The coordinates at which to play the audio.</param>
-    /// <param name="fallbackCoordinates">The map or grid coordinates at which to play the audio when coordinates are invalid.</param>
-    /// <param name="audioParams"></param>
-    private IPlayingAudioStream? Play(string filename, EntityCoordinates coordinates,
-        EntityCoordinates fallbackCoordinates, AudioParams? audioParams = null, bool recordReplay = true)
-    {
-        if (recordReplay && _replayRecording.IsRecording)
-        {
-            _replayRecording.RecordReplayMessage(new PlayAudioPositionalMessage
-            {
-                FileName = filename,
-                Coordinates = GetNetCoordinates(coordinates),
-                FallbackCoordinates = GetNetCoordinates(fallbackCoordinates),
-                AudioParams = audioParams ?? AudioParams.Default
-            });
-        }
-
-        return TryGetAudio(filename, out var audio) ? Play(audio, coordinates, fallbackCoordinates, audioParams) : default;
-    }
-
-    /// <summary>
-    ///     Play an audio stream at a static position.
-    /// </summary>
-    /// <param name="stream">The audio stream to play.</param>
-    /// <param name="coordinates">The coordinates at which to play the audio.</param>
-    /// <param name="fallbackCoordinates">The map or grid coordinates at which to play the audio when coordinates are invalid.</param>
-    /// <param name="audioParams"></param>
-    private IPlayingAudioStream? Play(AudioStream stream, EntityCoordinates coordinates,
-        EntityCoordinates fallbackCoordinates, AudioParams? audioParams = null)
-    {
-        if (!TryCreateAudioSource(stream, out var source))
-        {
-            _sawmill.Error($"Error setting up coordinates audio for {stream.Name} / {coordinates}: {0}", Environment.StackTrace);
-            return null;
-        }
-
-        if (!source.SetPosition(fallbackCoordinates.Position))
-        {
-            source.Dispose();
-            _sawmill.Warning($"Can't play positional audio \"{stream.Name}\", can't set position.");
-            return null;
-        }
-
-        var playing = CreateAndStartPlayingStream(source, audioParams, stream);
-        playing.TrackingCoordinates = coordinates;
-        playing.TrackingFallbackCoordinates = fallbackCoordinates != EntityCoordinates.Invalid ? fallbackCoordinates : null;
-        return playing;
-    }
-    #endregion
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayPredicted(SoundSpecifier? sound, EntityUid source, EntityUid? user,
-        AudioParams? audioParams = null)
-    {
-        if (_timing.IsFirstTimePredicted || sound == null)
-            return Play(sound, Filter.Local(), source, false, audioParams);
-        return null; // uhh Lets hope predicted audio never needs to somehow store the playing audio....
-    }
-
-    public override IPlayingAudioStream? PlayPredicted(SoundSpecifier? sound, EntityCoordinates coordinates, EntityUid? user,
-        AudioParams? audioParams = null)
-    {
-        if (_timing.IsFirstTimePredicted || sound == null)
-            return Play(sound, Filter.Local(), coordinates, false, audioParams);
-        return null;
-    }
-
-    private void ApplyAudioParams(AudioParams? audioParams, IClydeAudioSource source, AudioStream audio)
-    {
-        if (!audioParams.HasValue)
-            return;
-
-        if (audioParams.Value.Variation.HasValue)
-            source.SetPitch(audioParams.Value.PitchScale
-                            * (float) RandMan.NextGaussian(1, audioParams.Value.Variation.Value));
-        else
-            source.SetPitch(audioParams.Value.PitchScale);
-
-        source.SetVolume(audioParams.Value.Volume);
-        source.SetRolloffFactor(audioParams.Value.RolloffFactor);
-        source.SetMaxDistance(audioParams.Value.MaxDistance);
-        source.SetReferenceDistance(audioParams.Value.ReferenceDistance);
-        source.IsLooping = audioParams.Value.Loop;
-
-        // TODO clamp the offset inside of SetPlaybackPosition() itself.
-        var offset = audioParams.Value.PlayOffsetSeconds;
-        offset = Math.Clamp(offset, 0f, (float) audio.Length.TotalSeconds);
-        source.SetPlaybackPosition(offset);
-    }
-
-    public sealed class PlayingStream : IPlayingAudioStream
-    {
-        public uint? NetIdentifier;
-        public IClydeAudioSource Source = default!;
-        public EntityUid? TrackingEntity;
-        public EntityCoordinates? TrackingCoordinates;
-        public EntityCoordinates? TrackingFallbackCoordinates;
-        public bool Done;
-
-        public float Volume
-        {
-            get => _volume;
-            set
-            {
-                _volume = value;
-                Source.SetVolume(value);
-            }
-        }
-
-        private float _volume;
-
-        public float MaxDistance;
-        public float ReferenceDistance;
-        public float RolloffFactor;
-
-        public Attenuation Attenuation
-        {
-            get => _attenuation;
-            set
-            {
-                if (value == _attenuation) return;
-                _attenuation = value;
-                if (_attenuation != Attenuation.Default)
-                {
-                    // Need to disable default attenuation when using a custom one
-                    // Damn Sloth wanting linear ambience sounds so they smoothly cut-off and are short-range
-                    Source.SetRolloffFactor(0f);
-                }
-            }
-        }
-        private Attenuation _attenuation = Attenuation.Default;
-
-        public void Stop()
-        {
-            Source.StopPlaying();
-        }
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayGlobal(string filename, Filter playerFilter, bool recordReplay, AudioParams? audioParams = null)
-    {
-        return Play(filename, audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? Play(string filename, Filter playerFilter, EntityUid entity, bool recordReplay, AudioParams? audioParams = null)
-    {
-        return Play(filename, entity, null, audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? Play(string filename, Filter playerFilter, EntityCoordinates coordinates, bool recordReplay, AudioParams? audioParams = null)
-    {
-        return Play(filename, coordinates, GetFallbackCoordinates(coordinates.ToMap(EntityManager)), audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayGlobal(string filename, ICommonSession recipient, AudioParams? audioParams = null)
-    {
-        return Play(filename, audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayGlobal(string filename, EntityUid recipient, AudioParams? audioParams = null)
-    {
-        return Play(filename, audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayEntity(string filename, ICommonSession recipient, EntityUid uid, AudioParams? audioParams = null)
-    {
-        return Play(filename, uid, null, audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayEntity(string filename, EntityUid recipient, EntityUid uid, AudioParams? audioParams = null)
-    {
-        return Play(filename, uid, null, audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayStatic(string filename, ICommonSession recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
-    {
-        return Play(filename, coordinates, GetFallbackCoordinates(coordinates.ToMap(EntityManager)), audioParams);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayStatic(string filename, EntityUid recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
-    {
-        return Play(filename, coordinates, GetFallbackCoordinates(coordinates.ToMap(EntityManager)), audioParams);
-    }
-}

Robust.Client/GameObjects/EntitySystems/EyeSystem.cs

@@ -1,9 +1,8 @@
 using Robust.Client.Graphics;
 using Robust.Client.Physics;
-using Robust.Client.Player;
 using Robust.Shared.GameObjects;
-using Robust.Shared.Graphics;
 using Robust.Shared.IoC;
+using Robust.Shared.Player;
 
 namespace Robust.Client.GameObjects;
 
@@ -26,17 +25,13 @@ public sealed class EyeSystem : SharedEyeSystem
 
     private void OnEyeAutoState(EntityUid uid, EyeComponent component, ref AfterAutoHandleStateEvent args)
     {
-        UpdateEye(component);
+        UpdateEye((uid, component));
     }
 
     private void OnEyeAttached(EntityUid uid, EyeComponent component, LocalPlayerAttachedEvent args)
     {
-        // TODO: This probably shouldn't be nullable bruv.
-        if (component._eye != null)
-        {
-            _eyeManager.CurrentEye = component._eye;
-        }
-
+        UpdateEye((uid, component));
+        _eyeManager.CurrentEye = component.Eye;
         var ev = new EyeAttachedEvent(uid, component);
         RaiseLocalEvent(uid, ref ev, true);
     }
@@ -48,13 +43,7 @@ public sealed class EyeSystem : SharedEyeSystem
 
     private void OnInit(EntityUid uid, EyeComponent component, ComponentInit args)
     {
-        component._eye = new Eye
-        {
-            Position = Transform(uid).MapPosition,
-            Zoom = component.Zoom,
-            DrawFov = component.DrawFov,
-            Rotation = component.Rotation,
-        };
+        UpdateEye((uid, component));
     }
 
     /// <inheritdoc />
@@ -64,7 +53,7 @@ public sealed class EyeSystem : SharedEyeSystem
 
         while (query.MoveNext(out var uid, out var eyeComponent))
         {
-            if (eyeComponent._eye == null)
+            if (eyeComponent.Eye == null)
                 continue;
 
             if (!TryComp<TransformComponent>(eyeComponent.Target, out var xform))
@@ -73,7 +62,7 @@ public sealed class EyeSystem : SharedEyeSystem
                 eyeComponent.Target = null;
             }
 
-            eyeComponent._eye.Position = xform.MapPosition;
+            eyeComponent.Eye.Position = xform.MapPosition;
         }
     }
 }

Robust.Client/GameObjects/EntitySystems/MidiSystem.cs

@@ -1,3 +1,4 @@
+using Robust.Client.Audio;
 using Robust.Client.Audio.Midi;
 using Robust.Shared.GameObjects;
 using Robust.Shared.IoC;
@@ -8,6 +9,13 @@ namespace Robust.Client.GameObjects
     {
         [Dependency] private readonly IMidiManager _midiManager = default!;
 
+        public override void Initialize()
+        {
+            base.Initialize();
+            // AudioSystem sets eye position and rotation so rely on those.
+            UpdatesAfter.Add(typeof(AudioSystem));
+        }
+
         public override void FrameUpdate(float frameTime)
         {
             base.FrameUpdate(frameTime);

Robust.Client/GameObjects/EntitySystems/TransformSystem.cs

@@ -54,9 +54,10 @@ namespace Robust.Client.GameObjects
             //   should show the entity lerping.
             // - If the client predicts an entity will move while already lerping due to a state-application, it should
             //   clear the state's lerp, under the assumption that the client predicted the state and already rendered
-            //   the entity in the final position.
+            //   the entity in the state's final position.
             // - If the client predicts that an entity moves, then we only lerp if this is the first time that the tick
-            //   was predicted. I.e., we assume the entity was already rendered in it's final of that lerp.
+            //   was predicted. I.e., we assume the entity was already rendered in the final position that was
+            //   previously predicted.
             // - If the client predicts that an entity should lerp twice in the same tick, then we need to combine them.
             //   I.e. moving from a->b then b->c, the client should lerp from a->c.
 

Robust.Client/GameStates/ClientGameStateManager.cs

@@ -124,6 +124,8 @@ namespace Robust.Client.GameStates
         public bool DropStates;
 #endif
 
+        private bool _resettingPredictedEntities;
+
         /// <inheritdoc />
         public void Initialize()
         {
@@ -146,6 +148,7 @@ namespace Robust.Client.GameStates
             _config.OnValueChanged(CVars.NetPredictLagBias, i => PredictLagBias = i, true);
             _config.OnValueChanged(CVars.NetStateBufMergeThreshold, i => StateBufferMergeThreshold = i, true);
             _config.OnValueChanged(CVars.NetPVSEntityExitBudget, i => _pvsDetachBudget = i, true);
+            _config.OnValueChanged(CVars.NetMaxBufferSize, i => _processor.MaxBufferSize = i, true);
 
             _processor.Interpolation = _config.GetCVar(CVars.NetInterp);
             _processor.BufferSize = _config.GetCVar(CVars.NetBufferSize);
@@ -160,6 +163,8 @@ namespace Robust.Client.GameStates
             _conHost.RegisterCommand("localdelete", Loc.GetString("cmd-local-delete-desc"), Loc.GetString("cmd-local-delete-help"), LocalDeleteEntCommand);
             _conHost.RegisterCommand("fullstatereset", Loc.GetString("cmd-full-state-reset-desc"), Loc.GetString("cmd-full-state-reset-help"), (_,_,_) => RequestFullState());
 
+            _entities.ComponentAdded += OnComponentAdded;
+
             var metaId = _compFactory.GetRegistration(typeof(MetaDataComponent)).NetID;
             if (!metaId.HasValue)
                 throw new InvalidOperationException("MetaDataComponent does not have a NetId.");
@@ -167,6 +172,23 @@ namespace Robust.Client.GameStates
             _metaCompNetId = metaId.Value;
         }
 
+        private void OnComponentAdded(AddedComponentEventArgs args)
+        {
+            if (_resettingPredictedEntities)
+            {
+                var comp = args.ComponentType;
+
+                if (comp.NetID == null)
+                    return;
+
+                _sawmill.Error($"""
+                    Added component {comp.Name} with net id {comp.NetID} while resetting predicted entities.
+                    Stack trace:
+                    {Environment.StackTrace}
+                    """);
+            }
+        }
+
         /// <inheritdoc />
         public void Reset()
         {
@@ -536,40 +558,50 @@ namespace Robust.Client.GameStates
 
                 countReset += 1;
 
-                foreach (var (netId, comp) in meta.NetComponents)
+                try
                 {
-                    if (!comp.NetSyncEnabled)
-                        continue;
+                    _resettingPredictedEntities = true;
 
-                    // Was this component added during prediction?
-                    if (comp.CreationTick > _timing.LastRealTick)
+                    foreach (var (netId, comp) in meta.NetComponents)
                     {
-                        if (last.ContainsKey(netId))
+                        if (!comp.NetSyncEnabled)
+                            continue;
+
+                        // Was this component added during prediction?
+                        if (comp.CreationTick > _timing.LastRealTick)
                         {
-                            // Component was probably removed and then re-addedd during a single prediction run
-                            // Just reset state as normal.
-                            comp.ClearCreationTick();
+                            if (last.ContainsKey(netId))
+                            {
+                                // Component was probably removed and then re-addedd during a single prediction run
+                                // Just reset state as normal.
+                                comp.ClearCreationTick();
+                            }
+                            else
+                            {
+                                toRemove.Add(comp);
+                                if (_sawmill.Level <= LogLevel.Debug)
+                                    _sawmill.Debug($"  A new component was added: {comp.GetType()}");
+                                continue;
+                            }
                         }
-                        else
+
+                        if (comp.LastModifiedTick <= _timing.LastRealTick ||
+                            !last.TryGetValue(netId, out var compState))
                         {
-                            toRemove.Add(comp);
-                            if (_sawmill.Level <= LogLevel.Debug)
-                                _sawmill.Debug($"  A new component was added: {comp.GetType()}");
                             continue;
                         }
+
+                        if (_sawmill.Level <= LogLevel.Debug)
+                            _sawmill.Debug($"  A component was dirtied: {comp.GetType()}");
+
+                        var handleState = new ComponentHandleState(compState, null);
+                        _entities.EventBus.RaiseComponentEvent(comp, ref handleState);
+                        comp.LastModifiedTick = _timing.LastRealTick;
                     }
-
-                    if (comp.LastModifiedTick <= _timing.LastRealTick || !last.TryGetValue(netId, out var compState))
-                    {
-                        continue;
-                    }
-
-                    if (_sawmill.Level <= LogLevel.Debug)
-                        _sawmill.Debug($"  A component was dirtied: {comp.GetType()}");
-
-                    var handleState = new ComponentHandleState(compState, null);
-                    _entities.EventBus.RaiseComponentEvent(comp, ref handleState);
-                    comp.LastModifiedTick = _timing.LastRealTick;
+                }
+                finally
+                {
+                    _resettingPredictedEntities = false;
                 }
 
                 // Remove predicted component additions

Robust.Client/GameStates/GameStateProcessor.cs

@@ -14,8 +14,6 @@ namespace Robust.Client.GameStates
     /// <inheritdoc />
     internal sealed class GameStateProcessor : IGameStateProcessor
     {
-        public const int MaxBufferSize = 512;
-
         private readonly IClientGameTiming _timing;
         private readonly IClientGameStateManager _state;
         private readonly ISawmill _logger;
@@ -28,6 +26,8 @@ namespace Robust.Client.GameStates
         public (GameTick Tick, DateTime Time)? LastFullStateRequested { get; private set; } = (GameTick.Zero, DateTime.MaxValue);
 
         private int _bufferSize;
+        private int _maxBufferSize = 512;
+        public const int MinimumMaxBufferSize = 256;
 
         /// <summary>
         /// This dictionary stores the full most recently received server state of any entity. This is used whenever predicted entities get reset.
@@ -48,7 +48,14 @@ namespace Robust.Client.GameStates
         public int BufferSize
         {
             get => _bufferSize;
-            set => _bufferSize = value < 0 ? 0 : value;
+            set => _bufferSize = Math.Max(value, 0);
+        }
+
+        public int MaxBufferSize
+        {
+            get => _maxBufferSize;
+            // We place a lower bound on the maximum size to avoid spamming servers with full game state requests.
+            set => _maxBufferSize = Math.Max(value, MinimumMaxBufferSize);
         }
 
         /// <inheritdoc />
@@ -100,21 +107,21 @@ namespace Robust.Client.GameStates
                 return true;
             }
 
-            if (LastFullState == null && state.FromSequence == GameTick.Zero && state.ToSequence >= LastFullStateRequested!.Value.Tick)
+            if (LastFullState == null && state.FromSequence == GameTick.Zero)
             {
-                LastFullState = state;
-
-                if (Logging)
+                if (state.ToSequence >= LastFullStateRequested!.Value.Tick)
+                {
+                    LastFullState = state;
                     _logger.Info($"Received Full GameState: to={state.ToSequence}, sz={state.PayloadSize}");
+                    return true;
+                }
 
-                return true;
+                _logger.Info($"Received a late full game state. Received: {state.ToSequence}. Requested: {LastFullStateRequested.Value.Tick}");
             }
 
             if (LastFullState != null && state.ToSequence <= LastFullState.ToSequence)
             {
-                if (Logging)
-                    _logger.Info($"While waiting for full, received late GameState with lower to={state.ToSequence} than the last full state={LastFullState.ToSequence}");
-
+                _logger.Info($"While waiting for full, received late GameState with lower to={state.ToSequence} than the last full state={LastFullState.ToSequence}");
                 return false;
             }
 

Robust.Client/Graphics/Audio/ClydeAudio.ALDisposeQueues.cs

@@ -1,59 +0,0 @@
-using System.Collections.Concurrent;
-using OpenTK.Audio.OpenAL;
-
-namespace Robust.Client.Graphics.Audio
-{
-    internal partial class ClydeAudio
-    {
-        // Used to track audio sources that were disposed in the finalizer thread,
-        // so we need to properly send them off in the main thread.
-        private readonly ConcurrentQueue<(int sourceHandle, int filterHandle)> _sourceDisposeQueue = new();
-        private readonly ConcurrentQueue<(int sourceHandle, int filterHandle)> _bufferedSourceDisposeQueue = new();
-        private readonly ConcurrentQueue<int> _bufferDisposeQueue = new();
-
-        private void _flushALDisposeQueues()
-        {
-            // Clear out finalized audio sources.
-            while (_sourceDisposeQueue.TryDequeue(out var handles))
-            {
-                OpenALSawmill.Debug("Cleaning out source {0} which finalized in another thread.", handles.sourceHandle);
-                if (IsEfxSupported) RemoveEfx(handles);
-                AL.DeleteSource(handles.sourceHandle);
-                _checkAlError();
-                _audioSources.Remove(handles.sourceHandle);
-            }
-
-            // Clear out finalized buffered audio sources.
-            while (_bufferedSourceDisposeQueue.TryDequeue(out var handles))
-            {
-                OpenALSawmill.Debug("Cleaning out buffered source {0} which finalized in another thread.", handles.sourceHandle);
-                if (IsEfxSupported) RemoveEfx(handles);
-                AL.DeleteSource(handles.sourceHandle);
-                _checkAlError();
-                _bufferedAudioSources.Remove(handles.sourceHandle);
-            }
-
-            // Clear out finalized audio buffers.
-            while (_bufferDisposeQueue.TryDequeue(out var handle))
-            {
-                AL.DeleteBuffer(handle);
-                _checkAlError();
-            }
-        }
-
-        private void DeleteSourceOnMainThread(int sourceHandle, int filterHandle)
-        {
-            _sourceDisposeQueue.Enqueue((sourceHandle, filterHandle));
-        }
-
-        private void DeleteBufferedSourceOnMainThread(int bufferedSourceHandle, int filterHandle)
-        {
-            _bufferedSourceDisposeQueue.Enqueue((bufferedSourceHandle, filterHandle));
-        }
-
-        private void DeleteAudioBufferOnMainThread(int bufferHandle)
-        {
-            _bufferDisposeQueue.Enqueue(bufferHandle);
-        }
-    }
-}

Robust.Client/Graphics/Audio/ClydeAudio.AudioSources.cs

@@ -1,680 +0,0 @@
-using System;
-using System.Collections.Concurrent;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Runtime.CompilerServices;
-using System.Threading;
-using OpenTK.Audio.OpenAL;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
-using OpenTK.Mathematics;
-using Robust.Client.Audio;
-using Robust.Shared;
-using Robust.Shared.Configuration;
-using Robust.Shared.IoC;
-using Robust.Shared.Audio;
-using Robust.Shared.Log;
-using Robust.Shared.Maths;
-using Vector2 = System.Numerics.Vector2;
-using Robust.Shared.Utility;
-
-namespace Robust.Client.Graphics.Audio
-{
-    internal partial class ClydeAudio
-    {
-        private sealed class AudioSource : IClydeAudioSource
-        {
-            private int SourceHandle;
-            private readonly ClydeAudio _master;
-            private readonly AudioStream _sourceStream;
-            private int FilterHandle;
-#if DEBUG
-            private bool _didPositionWarning;
-#endif
-
-            private float _gain;
-
-            private bool IsEfxSupported => _master.IsEfxSupported;
-
-            public AudioSource(ClydeAudio master, int sourceHandle, AudioStream sourceStream)
-            {
-                _master = master;
-                SourceHandle = sourceHandle;
-                _sourceStream = sourceStream;
-                AL.GetSource(SourceHandle, ALSourcef.Gain, out _gain);
-            }
-
-            public void StartPlaying()
-            {
-                _checkDisposed();
-                AL.SourcePlay(SourceHandle);
-                _master._checkAlError();
-            }
-
-            public void StopPlaying()
-            {
-                if (_isDisposed()) return;
-                AL.SourceStop(SourceHandle);
-                _master._checkAlError();
-            }
-
-            public bool IsPlaying
-            {
-                get
-                {
-                    _checkDisposed();
-                    var state = AL.GetSourceState(SourceHandle);
-                    return state == ALSourceState.Playing;
-                }
-            }
-
-            public bool IsLooping
-            {
-                get
-                {
-                    _checkDisposed();
-                    AL.GetSource(SourceHandle, ALSourceb.Looping, out var ret);
-                    _master._checkAlError();
-                    return ret;
-                }
-                set
-                {
-                    _checkDisposed();
-                    AL.Source(SourceHandle, ALSourceb.Looping, value);
-                    _master._checkAlError();
-                }
-            }
-
-            public bool IsGlobal
-            {
-                get
-                {
-                    _checkDisposed();
-                    AL.GetSource(SourceHandle, ALSourceb.SourceRelative, out var value);
-                    _master._checkAlError();
-                    return value;
-                }
-            }
-
-            public void SetGlobal()
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle, ALSourceb.SourceRelative, true);
-                _master._checkAlError();
-            }
-
-            public void SetVolume(float decibels)
-            {
-                _checkDisposed();
-                var priorOcclusion = 1f;
-                if (!IsEfxSupported)
-                {
-                    AL.GetSource(SourceHandle, ALSourcef.Gain, out var priorGain);
-                    priorOcclusion = priorGain / _gain;
-                }
-                _gain =  MathF.Pow(10, decibels / 10);
-                AL.Source(SourceHandle, ALSourcef.Gain, _gain * priorOcclusion);
-                _master._checkAlError();
-            }
-
-            public void SetVolumeDirect(float gain)
-            {
-                _checkDisposed();
-                var priorOcclusion = 1f;
-                if (!IsEfxSupported)
-                {
-                    AL.GetSource(SourceHandle, ALSourcef.Gain, out var priorGain);
-                    priorOcclusion = priorGain / _gain;
-                }
-                _gain = gain;
-                AL.Source(SourceHandle, ALSourcef.Gain, _gain * priorOcclusion);
-                _master._checkAlError();
-            }
-
-            public void SetMaxDistance(float distance)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle, ALSourcef.MaxDistance, distance);
-                _master._checkAlError();
-            }
-
-            public void SetRolloffFactor(float rolloffFactor)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle, ALSourcef.RolloffFactor, rolloffFactor);
-                _master._checkAlError();
-            }
-
-            public void SetReferenceDistance(float refDistance)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle, ALSourcef.ReferenceDistance, refDistance);
-                _master._checkAlError();
-            }
-
-            public void SetOcclusion(float blocks)
-            {
-                _checkDisposed();
-                var cutoff = MathF.Exp(-blocks * 1);
-                var gain = MathF.Pow(cutoff, 0.1f);
-                if (IsEfxSupported)
-                {
-                    SetOcclusionEfx(gain, cutoff);
-                }
-                else
-                {
-                    gain *= gain * gain;
-                    AL.Source(SourceHandle, ALSourcef.Gain, _gain * gain);
-                }
-                _master._checkAlError();
-            }
-
-            private void SetOcclusionEfx(float gain, float cutoff)
-            {
-                if (FilterHandle == 0)
-                {
-                    FilterHandle = EFX.GenFilter();
-                    EFX.Filter(FilterHandle, FilterInteger.FilterType, (int) FilterType.Lowpass);
-                }
-
-                EFX.Filter(FilterHandle, FilterFloat.LowpassGain, gain);
-                EFX.Filter(FilterHandle, FilterFloat.LowpassGainHF, cutoff);
-                AL.Source(SourceHandle, ALSourcei.EfxDirectFilter, FilterHandle);
-            }
-
-            public void SetPlaybackPosition(float seconds)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle, ALSourcef.SecOffset, seconds);
-                _master._checkAlError();
-            }
-
-            public bool SetPosition(Vector2 position)
-            {
-                _checkDisposed();
-
-                var (x, y) = position;
-
-                if (!AreFinite(x, y))
-                {
-                    return false;
-                }
-#if DEBUG
-                // OpenAL doesn't seem to want to play stereo positionally.
-                // Log a warning if people try to.
-                if (_sourceStream.ChannelCount > 1 && !_didPositionWarning)
-                {
-                    _didPositionWarning = true;
-                    _master.OpenALSawmill.Warning("Attempting to set position on audio source with multiple audio channels! Stream: '{0}'.  Make sure the audio is MONO, not stereo.",
-                        _sourceStream.Name);
-                    // warning isn't enough, people just ignore it :(
-                    DebugTools.Assert(false, $"Attempting to set position on audio source with multiple audio channels! Stream: '{_sourceStream.Name}'. Make sure the audio is MONO, not stereo.");
-                }
-#endif
-
-                AL.Source(SourceHandle, ALSource3f.Position, x, y, 0);
-                _master._checkAlError();
-                return true;
-            }
-
-            private static bool AreFinite(float x, float y)
-            {
-                if (float.IsFinite(x) && float.IsFinite(y))
-                {
-                    return true;
-                }
-
-                return false;
-            }
-
-            public void SetVelocity(Vector2 velocity)
-            {
-                _checkDisposed();
-
-                var (x, y) = velocity;
-
-                if (!AreFinite(x, y))
-                {
-                    return;
-                }
-
-                AL.Source(SourceHandle, ALSource3f.Velocity, x, y, 0);
-
-                _master._checkAlError();
-            }
-
-            public void SetPitch(float pitch)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle, ALSourcef.Pitch, pitch);
-                _master._checkAlError();
-            }
-
-            ~AudioSource()
-            {
-                Dispose(false);
-            }
-
-            public void Dispose()
-            {
-                Dispose(true);
-                GC.SuppressFinalize(this);
-            }
-
-            private void Dispose(bool disposing)
-            {
-                if (!disposing)
-                {
-                    // We can't run this code inside the finalizer thread so tell Clyde to clear it up later.
-                    _master.DeleteSourceOnMainThread(SourceHandle, FilterHandle);
-                }
-                else
-                {
-                    if (FilterHandle != 0) EFX.DeleteFilter(FilterHandle);
-                    AL.DeleteSource(SourceHandle);
-                    _master._audioSources.Remove(SourceHandle);
-                    _master._checkAlError();
-                }
-
-                SourceHandle = -1;
-            }
-
-            private bool _isDisposed()
-            {
-                return SourceHandle == -1;
-            }
-
-            private void _checkDisposed()
-            {
-                if (SourceHandle == -1)
-                {
-                    throw new ObjectDisposedException(nameof(AudioSource));
-                }
-            }
-        }
-
-        private sealed class BufferedAudioSource : IClydeBufferedAudioSource
-        {
-            private int? SourceHandle = null;
-            private int[] BufferHandles;
-            private Dictionary<int, int> BufferMap = new();
-            private readonly ClydeAudio _master;
-            private bool _mono = true;
-            private bool _float = false;
-            private int FilterHandle;
-
-            private float _gain;
-
-            public int SampleRate { get; set; } = 44100;
-
-            private bool IsEfxSupported => _master.IsEfxSupported;
-
-            public BufferedAudioSource(ClydeAudio master, int sourceHandle, int[] bufferHandles, bool floatAudio = false)
-            {
-                _master = master;
-                SourceHandle = sourceHandle;
-                BufferHandles = bufferHandles;
-                for (int i = 0; i < BufferHandles.Length; i++)
-                {
-                    var bufferHandle = BufferHandles[i];
-                    BufferMap[bufferHandle] = i;
-                }
-                _float = floatAudio;
-                AL.GetSource(sourceHandle, ALSourcef.Gain, out _gain);
-            }
-
-            public void StartPlaying()
-            {
-                _checkDisposed();
-                // ReSharper disable once PossibleInvalidOperationException
-                AL.SourcePlay(stackalloc int[] {SourceHandle!.Value});
-                _master._checkAlError();
-            }
-
-            public void StopPlaying()
-            {
-                if (_isDisposed()) return;
-                // ReSharper disable once PossibleInvalidOperationException
-                AL.SourceStop(SourceHandle!.Value);
-                _master._checkAlError();
-            }
-
-            public bool IsPlaying
-            {
-                get
-                {
-                    _checkDisposed();
-                    // ReSharper disable once PossibleInvalidOperationException
-                    var state = AL.GetSourceState(SourceHandle!.Value);
-                    return state == ALSourceState.Playing;
-                }
-            }
-
-            public bool IsLooping
-            {
-                get => throw new NotImplementedException();
-                set => throw new NotImplementedException();
-            }
-
-            public void SetGlobal()
-            {
-                _checkDisposed();
-                _mono = false;
-                // ReSharper disable once PossibleInvalidOperationException
-                AL.Source(SourceHandle!.Value, ALSourceb.SourceRelative, true);
-                _master._checkAlError();
-            }
-
-            public void SetLooping()
-            {
-                // TODO?waaaaddDDDDD
-            }
-
-            public void SetVolume(float decibels)
-            {
-                _checkDisposed();
-                var priorOcclusion = 1f;
-                if (!IsEfxSupported)
-                {
-                    AL.GetSource(SourceHandle!.Value, ALSourcef.Gain, out var priorGain);
-                    priorOcclusion = priorGain / _gain;
-                }
-                _gain =  MathF.Pow(10, decibels / 10);
-                AL.Source(SourceHandle!.Value, ALSourcef.Gain, _gain * priorOcclusion);
-                _master._checkAlError();
-            }
-
-            public void SetVolumeDirect(float gain)
-            {
-                _checkDisposed();
-                var priorOcclusion = 1f;
-                if (!IsEfxSupported)
-                {
-                    AL.GetSource(SourceHandle!.Value, ALSourcef.Gain, out var priorGain);
-                    priorOcclusion = priorGain / _gain;
-                }
-                _gain = gain;
-                AL.Source(SourceHandle!.Value, ALSourcef.Gain, _gain * priorOcclusion);
-                _master._checkAlError();
-            }
-
-            public void SetMaxDistance(float distance)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle!.Value, ALSourcef.MaxDistance, distance);
-                _master._checkAlError();
-            }
-
-            public void SetRolloffFactor(float rolloffFactor)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle!.Value, ALSourcef.RolloffFactor, rolloffFactor);
-                _master._checkAlError();
-            }
-
-            public void SetReferenceDistance(float refDistance)
-            {
-                _checkDisposed();
-                AL.Source(SourceHandle!.Value, ALSourcef.ReferenceDistance, refDistance);
-                _master._checkAlError();
-            }
-
-            public void SetOcclusion(float blocks)
-            {
-                _checkDisposed();
-                var cutoff = MathF.Exp(-blocks * 1.5f);
-                var gain = MathF.Pow(cutoff, 0.1f);
-                if (IsEfxSupported)
-                {
-                    SetOcclusionEfx(gain, cutoff);
-                }
-                else
-                {
-                    gain *= gain * gain;
-                    AL.Source(SourceHandle!.Value, ALSourcef.Gain, gain * _gain);
-                }
-
-                _master._checkAlError();
-            }
-
-            private void SetOcclusionEfx(float gain, float cutoff)
-            {
-                if (FilterHandle == 0)
-                {
-                    FilterHandle = EFX.GenFilter();
-                    EFX.Filter(FilterHandle, FilterInteger.FilterType, (int) FilterType.Lowpass);
-                }
-                EFX.Filter(FilterHandle, FilterFloat.LowpassGain, gain);
-                EFX.Filter(FilterHandle, FilterFloat.LowpassGainHF, cutoff);
-                AL.Source(SourceHandle!.Value, ALSourcei.EfxDirectFilter, FilterHandle);
-            }
-
-            public void SetPlaybackPosition(float seconds)
-            {
-                _checkDisposed();
-                // ReSharper disable once PossibleInvalidOperationException
-                AL.Source(SourceHandle!.Value, ALSourcef.SecOffset, seconds);
-                _master._checkAlError();
-            }
-
-            public bool IsGlobal
-            {
-                get
-                {
-                    _checkDisposed();
-                    AL.GetSource(SourceHandle!.Value, ALSourceb.SourceRelative, out var value);
-                    _master._checkAlError();
-                    return value;
-                }
-            }
-
-            public bool SetPosition(Vector2 position)
-            {
-                _checkDisposed();
-
-                var (x, y) = position;
-
-                if (!AreFinite(x, y))
-                {
-                    return false;
-                }
-
-                _mono = true;
-                // ReSharper disable once PossibleInvalidOperationException
-                AL.Source(SourceHandle!.Value, ALSource3f.Position, x, y, 0);
-                _master._checkAlError();
-                return true;
-            }
-
-            private static bool AreFinite(float x, float y)
-            {
-                if (float.IsFinite(x) && float.IsFinite(y))
-                {
-                    return true;
-                }
-
-                return false;
-            }
-
-            public void SetVelocity(Vector2 velocity)
-            {
-                _checkDisposed();
-
-                var (x, y) = velocity;
-
-                if (!AreFinite(x, y))
-                {
-                    return;
-                }
-
-                AL.Source(SourceHandle!.Value, ALSource3f.Velocity, x, y, 0);
-
-                _master._checkAlError();
-            }
-
-            public void SetPitch(float pitch)
-            {
-                _checkDisposed();
-                // ReSharper disable once PossibleInvalidOperationException
-                AL.Source(SourceHandle!.Value, ALSourcef.Pitch, pitch);
-                _master._checkAlError();
-            }
-
-            ~BufferedAudioSource()
-            {
-                Dispose(false);
-            }
-
-            public void Dispose()
-            {
-                Dispose(true);
-                GC.SuppressFinalize(this);
-            }
-
-            private void Dispose(bool disposing)
-            {
-                if (SourceHandle == null) return;
-
-                if (!_master.IsMainThread())
-                {
-                    // We can't run this code inside another thread so tell Clyde to clear it up later.
-                    _master.DeleteBufferedSourceOnMainThread(SourceHandle.Value, FilterHandle);
-                    for (var i = 0; i < BufferHandles.Length; i++)
-                        _master.DeleteAudioBufferOnMainThread(BufferHandles[i]);
-                }
-                else
-                {
-                    if (FilterHandle != 0) EFX.DeleteFilter(FilterHandle);
-                    AL.DeleteSource(SourceHandle.Value);
-                    AL.DeleteBuffers(BufferHandles);
-                    _master._bufferedAudioSources.Remove(SourceHandle.Value);
-                    _master._checkAlError();
-                }
-
-                SourceHandle = null;
-            }
-
-            private bool _isDisposed()
-            {
-                return SourceHandle == null;
-            }
-
-            private void _checkDisposed()
-            {
-                if (SourceHandle == null)
-                {
-                    throw new ObjectDisposedException(nameof(AudioSource));
-                }
-            }
-
-            public int GetNumberOfBuffersProcessed()
-            {
-                _checkDisposed();
-                // ReSharper disable once PossibleInvalidOperationException
-                AL.GetSource(SourceHandle!.Value, ALGetSourcei.BuffersProcessed, out var buffersProcessed);
-                return buffersProcessed;
-            }
-
-            public unsafe void GetBuffersProcessed(Span<int> handles)
-            {
-                _checkDisposed();
-                var entries = Math.Min(Math.Min(handles.Length, BufferHandles.Length), GetNumberOfBuffersProcessed());
-                fixed (int* ptr = handles)
-                    // ReSharper disable once PossibleInvalidOperationException
-                    AL.SourceUnqueueBuffers(SourceHandle!.Value, entries, ptr);
-
-                for (var i = 0; i < entries; i++)
-                    handles[i] = BufferMap[handles[i]];
-            }
-
-            public unsafe void WriteBuffer(int handle, ReadOnlySpan<ushort> data)
-            {
-                _checkDisposed();
-
-                if(_float)
-                    throw new InvalidOperationException("Can't write ushort numbers to buffers when buffer type is float!");
-
-                if (handle >= BufferHandles.Length)
-                    throw new ArgumentOutOfRangeException(nameof(handle),
-                        $"Got {handle}. Expected less than {BufferHandles.Length}");
-
-                fixed (ushort* ptr = data)
-                {
-                    AL.BufferData(BufferHandles[handle], _mono ? ALFormat.Mono16 : ALFormat.Stereo16, (IntPtr) ptr,
-                        _mono ? data.Length / 2 * sizeof(ushort) : data.Length * sizeof(ushort), SampleRate);
-                }
-            }
-
-            public unsafe void WriteBuffer(int handle, ReadOnlySpan<float> data)
-            {
-                _checkDisposed();
-
-                if(!_float)
-                    throw new InvalidOperationException("Can't write float numbers to buffers when buffer type is ushort!");
-
-                if (handle >= BufferHandles.Length)
-                    throw new ArgumentOutOfRangeException(nameof(handle),
-                        $"Got {handle}. Expected less than {BufferHandles.Length}");
-
-                fixed (float* ptr = data)
-                {
-                    AL.BufferData(BufferHandles[handle], _mono ? ALFormat.MonoFloat32Ext : ALFormat.StereoFloat32Ext, (IntPtr) ptr,
-                        _mono ? data.Length / 2 * sizeof(float) : data.Length * sizeof(float), SampleRate);
-                }
-            }
-
-            public unsafe void QueueBuffers(ReadOnlySpan<int> handles)
-            {
-                _checkDisposed();
-
-                Span<int> realHandles = stackalloc int[handles.Length];
-                handles.CopyTo(realHandles);
-
-                for (var i = 0; i < realHandles.Length; i++)
-                {
-                    var handle = realHandles[i];
-                    if (handle >= BufferHandles.Length)
-                        throw new ArgumentOutOfRangeException(nameof(handles), $"Invalid handle with index {i}!");
-                    realHandles[i] = BufferHandles[handle];
-                }
-
-                fixed (int* ptr = realHandles)
-                    // ReSharper disable once PossibleInvalidOperationException
-                    AL.SourceQueueBuffers(SourceHandle!.Value, handles.Length, ptr);
-            }
-
-            public unsafe void EmptyBuffers()
-            {
-                _checkDisposed();
-                var length = (SampleRate / BufferHandles.Length) * (_mono ? 1 : 2);
-
-                Span<int> handles = stackalloc int[BufferHandles.Length];
-
-                if (_float)
-                {
-                    var empty = new float[length];
-                    var span = (Span<float>) empty;
-
-                    for (var i = 0; i < BufferHandles.Length; i++)
-                    {
-                        WriteBuffer(BufferMap[BufferHandles[i]], span);
-                        handles[i] = BufferMap[BufferHandles[i]];
-                    }
-                }
-                else
-                {
-                    var empty = new ushort[length];
-                    var span = (Span<ushort>) empty;
-
-                    for (var i = 0; i < BufferHandles.Length; i++)
-                    {
-                        WriteBuffer(BufferMap[BufferHandles[i]], span);
-                        handles[i] = BufferMap[BufferHandles[i]];
-                    }
-                }
-
-                QueueBuffers(handles);
-            }
-        }
-    }
-}

Robust.Client/Graphics/Audio/ClydeAudio.Formats.OggVorbis.cs

@@ -1,54 +0,0 @@
-using System;
-using System.IO;
-
-namespace Robust.Client.Graphics.Audio
-{
-    internal partial class ClydeAudio
-    {
-        private OggVorbisData _readOggVorbis(Stream stream)
-        {
-            using (var vorbis = new NVorbis.VorbisReader(stream, false))
-            {
-                var sampleRate = vorbis.SampleRate;
-                var channels = vorbis.Channels;
-                var totalSamples = vorbis.TotalSamples;
-
-                var readSamples = 0;
-                var buffer = new float[totalSamples * channels];
-
-                while (readSamples < totalSamples)
-                {
-                    var read = vorbis.ReadSamples(buffer, readSamples * channels, buffer.Length - readSamples);
-                    if (read == 0)
-                    {
-                        break;
-                    }
-
-                    readSamples += read;
-                }
-
-                return new OggVorbisData(totalSamples, sampleRate, channels, buffer, vorbis.Tags.Title, vorbis.Tags.Artist);
-            }
-        }
-
-        private readonly struct OggVorbisData
-        {
-            public readonly long TotalSamples;
-            public readonly long SampleRate;
-            public readonly long Channels;
-            public readonly ReadOnlyMemory<float> Data;
-            public readonly string Title;
-            public readonly string Artist;
-
-            public OggVorbisData(long totalSamples, long sampleRate, long channels, ReadOnlyMemory<float> data, string title, string artist)
-            {
-                TotalSamples = totalSamples;
-                SampleRate = sampleRate;
-                Channels = channels;
-                Data = data;
-                Title = title;
-                Artist = artist;
-            }
-        }
-    }
-}

Robust.Client/Graphics/Audio/ClydeAudio.Formats.Wav.cs

@@ -1,144 +0,0 @@
-using System;
-using System.IO;
-using JetBrains.Annotations;
-using Robust.Shared.Utility;
-
-namespace Robust.Client.Graphics.Audio
-{
-    internal partial class ClydeAudio
-    {
-        /// <summary>
-        ///     Load up a WAVE file.
-        /// </summary>
-        private static WavData _readWav(Stream stream)
-        {
-            var reader = new BinaryReader(stream, EncodingHelpers.UTF8, true);
-
-            void SkipChunk()
-            {
-                var length = reader.ReadUInt32();
-                stream.Position += length;
-            }
-
-            // Read outer most chunks.
-            Span<byte> fourCc = stackalloc byte[4];
-            while (true)
-            {
-                _readFourCC(reader, fourCc);
-
-                if (!fourCc.SequenceEqual("RIFF"u8))
-                {
-                    SkipChunk();
-                    continue;
-                }
-
-                return _readRiffChunk(reader);
-            }
-        }
-
-        private static void _skipChunk(BinaryReader reader)
-        {
-            var length = reader.ReadUInt32();
-            reader.BaseStream.Position += length;
-        }
-
-        private static void _readFourCC(BinaryReader reader, Span<byte> fourCc)
-        {
-            fourCc[0] = reader.ReadByte();
-            fourCc[1] = reader.ReadByte();
-            fourCc[2] = reader.ReadByte();
-            fourCc[3] = reader.ReadByte();
-        }
-
-        private static WavData _readRiffChunk(BinaryReader reader)
-        {
-            Span<byte> format = stackalloc byte[4];
-            reader.ReadUInt32();
-            _readFourCC(reader, format);
-            if (!format.SequenceEqual("WAVE"u8))
-            {
-                throw new InvalidDataException("File is not a WAVE file.");
-            }
-
-            _readFourCC(reader, format);
-            if (!format.SequenceEqual("fmt "u8))
-            {
-                throw new InvalidDataException("Expected fmt chunk.");
-            }
-
-            // Read fmt chunk.
-
-            var size = reader.ReadInt32();
-            var afterFmtPos = reader.BaseStream.Position + size;
-
-            var audioType = (WavAudioFormatType) reader.ReadInt16();
-            var channels = reader.ReadInt16();
-            var sampleRate = reader.ReadInt32();
-            var byteRate = reader.ReadInt32();
-            var blockAlign = reader.ReadInt16();
-            var bitsPerSample = reader.ReadInt16();
-
-            if (audioType != WavAudioFormatType.PCM)
-            {
-                throw new NotImplementedException("Unable to support audio types other than PCM.");
-            }
-
-            DebugTools.Assert(byteRate == sampleRate * channels * bitsPerSample / 8);
-
-            // Fmt is not of guaranteed size, so use the size header to skip to the end.
-            reader.BaseStream.Position = afterFmtPos;
-
-            while (true)
-            {
-                _readFourCC(reader, format);
-                if (!format.SequenceEqual("data"u8))
-                {
-                    _skipChunk(reader);
-                    continue;
-                }
-
-                break;
-            }
-
-            // We are in the data chunk.
-            size = reader.ReadInt32();
-            var data = reader.ReadBytes(size);
-
-            return new WavData(audioType, channels, sampleRate, byteRate, blockAlign, bitsPerSample, data);
-        }
-
-        /// <summary>
-        ///     See http://soundfile.sapp.org/doc/WaveFormat/ for reference.
-        /// </summary>
-        [PublicAPI]
-        private readonly struct WavData
-        {
-            public readonly WavAudioFormatType AudioType;
-            public readonly short NumChannels;
-            public readonly int SampleRate;
-            public readonly int ByteRate;
-            public readonly short BlockAlign;
-            public readonly short BitsPerSample;
-            public readonly ReadOnlyMemory<byte> Data;
-
-            public WavData(WavAudioFormatType audioType, short numChannels, int sampleRate, int byteRate,
-                short blockAlign, short bitsPerSample, ReadOnlyMemory<byte> data)
-            {
-                AudioType = audioType;
-                NumChannels = numChannels;
-                SampleRate = sampleRate;
-                ByteRate = byteRate;
-                BlockAlign = blockAlign;
-                BitsPerSample = bitsPerSample;
-                Data = data;
-            }
-        }
-
-        private enum WavAudioFormatType : short
-        {
-            Unknown = 0,
-            PCM = 1,
-            // There's a bunch of other types, those are all unsupported.
-        }
-    }
-}

Robust.Client/Graphics/Audio/ClydeAudio.IoC.cs

@@ -1,51 +0,0 @@
-using System;
-using System.Collections.Concurrent;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using System.Runtime.CompilerServices;
-using System.Threading;
-using OpenTK.Audio.OpenAL;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
-using OpenTK.Mathematics;
-using Robust.Client.Audio;
-using Robust.Shared;
-using Robust.Shared.Configuration;
-using Robust.Shared.IoC;
-using Robust.Shared.Audio;
-using Robust.Shared.Log;
-using Robust.Shared.Timing;
-using Vector2 = System.Numerics.Vector2;
-
-namespace Robust.Client.Graphics.Audio
-{
-    internal partial class ClydeAudio
-    {
-        [Robust.Shared.IoC.Dependency] private readonly IConfigurationManager _cfg = default!;
-        [Robust.Shared.IoC.Dependency] private readonly IEyeManager _eyeManager = default!;
-        [Robust.Shared.IoC.Dependency] private readonly ILogManager _logMan = default!;
-
-        private Thread? _gameThread;
-
-        public bool InitializePostWindowing()
-        {
-            _gameThread = Thread.CurrentThread;
-            return _initializeAudio();
-        }
-
-        public void FrameProcess(FrameEventArgs eventArgs)
-        {
-            _updateAudio();
-        }
-
-        public void Shutdown()
-        {
-            _shutdownAudio();
-        }
-
-        private bool IsMainThread()
-        {
-            return Thread.CurrentThread == _gameThread;
-        }
-    }
-}

Robust.Client/Graphics/Audio/ClydeAudio.cs

@@ -1,432 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Runtime.CompilerServices;
-using OpenTK.Audio.OpenAL;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
-using OpenTK.Mathematics;
-using Robust.Client.Audio;
-using Robust.Shared;
-using Robust.Shared.Audio;
-using Robust.Shared.Log;
-
-namespace Robust.Client.Graphics.Audio
-{
-    internal sealed partial class ClydeAudio : IClydeAudio, IClydeAudioInternal
-    {
-        private ALDevice _openALDevice;
-        private ALContext _openALContext;
-
-        private readonly List<LoadedAudioSample> _audioSampleBuffers = new();
-
-        private readonly Dictionary<int, WeakReference<AudioSource>> _audioSources =
-            new();
-
-        private readonly Dictionary<int, WeakReference<BufferedAudioSource>> _bufferedAudioSources =
-            new();
-
-        private readonly HashSet<string> _alcDeviceExtensions = new();
-        private readonly HashSet<string> _alContextExtensions = new();
-
-        // The base gain value for a listener, used to boost the default volume.
-        private const float _baseGain = 2f;
-
-        public bool HasAlDeviceExtension(string extension) => _alcDeviceExtensions.Contains(extension);
-        public bool HasAlContextExtension(string extension) => _alContextExtensions.Contains(extension);
-
-        internal bool IsEfxSupported;
-
-        internal ISawmill OpenALSawmill = default!;
-
-        private bool _initializeAudio()
-        {
-            OpenALSawmill = _logMan.GetSawmill("clyde.oal");
-
-            if (!_audioOpenDevice())
-                return false;
-
-            // Create OpenAL context.
-            _audioCreateContext();
-
-            IsEfxSupported = HasAlDeviceExtension("ALC_EXT_EFX");
-
-            _cfg.OnValueChanged(CVars.AudioMasterVolume, SetMasterVolume, true);
-            _cfg.OnValueChanged(CVars.AudioAttenuation, SetAudioAttenuation, true);
-            return true;
-        }
-
-        private void _audioCreateContext()
-        {
-            unsafe
-            {
-                _openALContext = ALC.CreateContext(_openALDevice, (int*) 0);
-            }
-
-            ALC.MakeContextCurrent(_openALContext);
-            _checkAlcError(_openALDevice);
-            _checkAlError();
-
-            // Load up AL context extensions.
-            var s = ALC.GetString(ALDevice.Null, AlcGetString.Extensions) ?? "";
-            foreach (var extension in s.Split(' '))
-            {
-                _alContextExtensions.Add(extension);
-            }
-
-            OpenALSawmill.Debug("OpenAL Vendor: {0}", AL.Get(ALGetString.Vendor));
-            OpenALSawmill.Debug("OpenAL Renderer: {0}", AL.Get(ALGetString.Renderer));
-            OpenALSawmill.Debug("OpenAL Version: {0}", AL.Get(ALGetString.Version));
-        }
-
-        private bool _audioOpenDevice()
-        {
-            var preferredDevice = _cfg.GetCVar(CVars.AudioDevice);
-
-            // Open device.
-            if (!string.IsNullOrEmpty(preferredDevice))
-            {
-                _openALDevice = ALC.OpenDevice(preferredDevice);
-                if (_openALDevice == IntPtr.Zero)
-                {
-                    OpenALSawmill.Warning("Unable to open preferred audio device '{0}': {1}. Falling back default.",
-                        preferredDevice, ALC.GetError(ALDevice.Null));
-
-                    _openALDevice = ALC.OpenDevice(null);
-                }
-            }
-            else
-            {
-                _openALDevice = ALC.OpenDevice(null);
-            }
-
-            _checkAlcError(_openALDevice);
-
-            if (_openALDevice == IntPtr.Zero)
-            {
-                OpenALSawmill.Error("Unable to open OpenAL device! {1}", ALC.GetError(ALDevice.Null));
-                return false;
-            }
-
-            // Load up ALC extensions.
-            var s = ALC.GetString(_openALDevice, AlcGetString.Extensions) ?? "";
-            foreach (var extension in s.Split(' '))
-            {
-                _alcDeviceExtensions.Add(extension);
-            }
-            return true;
-        }
-
-        public void StopAllAudio()
-        {
-            foreach (var (key, source) in _audioSources)
-            {
-                if (source.TryGetTarget(out var target))
-                {
-                    target.StopPlaying();
-                }
-            }
-
-            foreach (var (key, source) in _bufferedAudioSources)
-            {
-                if (source.TryGetTarget(out var target))
-                {
-                    target.StopPlaying();
-                }
-            }
-        }
-
-        public void DisposeAllAudio()
-        {
-            foreach (var (key, source) in _audioSources)
-            {
-                if (source.TryGetTarget(out var target))
-                {
-                    target.Dispose();
-                }
-            }
-            _audioSources.Clear();
-
-            foreach (var (key, source) in _bufferedAudioSources)
-            {
-                if (source.TryGetTarget(out var target))
-                {
-                    target.StopPlaying();
-                    target.Dispose();
-                }
-            }
-            _bufferedAudioSources.Clear();
-        }
-
-        private void _shutdownAudio()
-        {
-            DisposeAllAudio();
-
-            if (_openALContext != ALContext.Null)
-            {
-                ALC.MakeContextCurrent(ALContext.Null);
-
-                ALC.DestroyContext(_openALContext);
-            }
-
-            if (_openALDevice != IntPtr.Zero)
-            {
-                ALC.CloseDevice(_openALDevice);
-            }
-        }
-
-        private void _updateAudio()
-        {
-            var eye = _eyeManager.CurrentEye;
-            var vec = eye.Position.Position;
-            AL.Listener(ALListener3f.Position, vec.X, vec.Y, -5);
-            var rot2d = eye.Rotation.ToVec();
-            AL.Listener(ALListenerfv.Orientation, new []{0, 0, -1, rot2d.X, rot2d.Y, 0});
-
-            // Default orientation: at: (0, 0, -1)  up: (0, 1, 0)
-            var rot = eye.Rotation.ToVec();
-            var at = new Vector3(0f, 0f, -1f);
-            var up = new Vector3(rot.Y, rot.X, 0f);
-            AL.Listener(ALListenerfv.Orientation, ref at, ref up);
-
-            _flushALDisposeQueues();
-        }
-
-        private static void RemoveEfx((int sourceHandle, int filterHandle) handles)
-        {
-            if (handles.filterHandle != 0) EFX.DeleteFilter(handles.filterHandle);
-        }
-
-        public void SetMasterVolume(float newVolume)
-        {
-            AL.Listener(ALListenerf.Gain, _baseGain * newVolume);
-        }
-
-        public void SetAudioAttenuation(int value)
-        {
-            var attenuation = (Attenuation) value;
-
-            switch (attenuation)
-            {
-                case Attenuation.NoAttenuation:
-                    AL.DistanceModel(ALDistanceModel.None);
-                    break;
-                case Attenuation.InverseDistance:
-                    AL.DistanceModel(ALDistanceModel.InverseDistance);
-                    break;
-                case Attenuation.Default:
-                case Attenuation.InverseDistanceClamped:
-                    AL.DistanceModel(ALDistanceModel.InverseDistanceClamped);
-                    break;
-                case Attenuation.LinearDistance:
-                    AL.DistanceModel(ALDistanceModel.LinearDistance);
-                    break;
-                case Attenuation.LinearDistanceClamped:
-                    AL.DistanceModel(ALDistanceModel.LinearDistanceClamped);
-                    break;
-                case Attenuation.ExponentDistance:
-                    AL.DistanceModel(ALDistanceModel.ExponentDistance);
-                    break;
-                case Attenuation.ExponentDistanceClamped:
-                    AL.DistanceModel(ALDistanceModel.ExponentDistanceClamped);
-                    break;
-                default:
-                    throw new ArgumentOutOfRangeException($"No implementation to set {attenuation.ToString()} for DistanceModel!");
-            }
-
-            var attToString = attenuation == Attenuation.Default ? Attenuation.InverseDistanceClamped : attenuation;
-
-            OpenALSawmill.Info($"Set audio attenuation to {attToString.ToString()}");
-        }
-
-        public IClydeAudioSource? CreateAudioSource(AudioStream stream)
-        {
-            var source = AL.GenSource();
-
-            if (!AL.IsSource(source))
-            {
-                OpenALSawmill.Error("Failed to generate source. Too many simultaneous audio streams? {0}", Environment.StackTrace);
-                return null;
-            }
-
-            // ReSharper disable once PossibleInvalidOperationException
-            // TODO: This really shouldn't be indexing based on the ClydeHandle...
-            AL.Source(source, ALSourcei.Buffer, _audioSampleBuffers[(int) stream.ClydeHandle!.Value.Value].BufferHandle);
-
-            var audioSource = new AudioSource(this, source, stream);
-            _audioSources.Add(source, new WeakReference<AudioSource>(audioSource));
-            return audioSource;
-        }
-
-        public IClydeBufferedAudioSource CreateBufferedAudioSource(int buffers, bool floatAudio=false)
-        {
-            var source = AL.GenSource();
-
-            if (!AL.IsSource(source))
-                throw new Exception("Failed to generate source. Too many simultaneous audio streams?");
-
-            // ReSharper disable once PossibleInvalidOperationException
-
-            var audioSource = new BufferedAudioSource(this, source, AL.GenBuffers(buffers), floatAudio);
-            _bufferedAudioSources.Add(source, new WeakReference<BufferedAudioSource>(audioSource));
-            return audioSource;
-        }
-
-        private void _checkAlcError(ALDevice device,
-            [CallerMemberName] string callerMember = "",
-            [CallerLineNumber] int callerLineNumber = -1)
-        {
-            var error = ALC.GetError(device);
-            if (error != AlcError.NoError)
-            {
-                OpenALSawmill.Error("[{0}:{1}] ALC error: {2}", callerMember, callerLineNumber, error);
-            }
-        }
-
-        private void _checkAlError([CallerMemberName] string callerMember = "",
-            [CallerLineNumber] int callerLineNumber = -1)
-        {
-            var error = AL.GetError();
-            if (error != ALError.NoError)
-            {
-                OpenALSawmill.Error("[{0}:{1}] AL error: {2}", callerMember, callerLineNumber, error);
-            }
-        }
-
-        public AudioStream LoadAudioOggVorbis(Stream stream, string? name = null)
-        {
-            var vorbis = _readOggVorbis(stream);
-
-            var buffer = AL.GenBuffer();
-
-            ALFormat format;
-            // NVorbis only supports loading into floats.
-            // If this becomes a problem due to missing extension support (doubt it but ok),
-            // check the git history, I originally used libvorbisfile which worked and loaded 16 bit LPCM.
-            if (vorbis.Channels == 1)
-            {
-                format = ALFormat.MonoFloat32Ext;
-            }
-            else if (vorbis.Channels == 2)
-            {
-                format = ALFormat.StereoFloat32Ext;
-            }
-            else
-            {
-                throw new InvalidOperationException("Unable to load audio with more than 2 channels.");
-            }
-
-            unsafe
-            {
-                fixed (float* ptr = vorbis.Data.Span)
-                {
-                    AL.BufferData(buffer, format, (IntPtr) ptr, vorbis.Data.Length * sizeof(float),
-                        (int) vorbis.SampleRate);
-                }
-            }
-
-            _checkAlError();
-
-            var handle = new ClydeHandle(_audioSampleBuffers.Count);
-            _audioSampleBuffers.Add(new LoadedAudioSample(buffer));
-            var length = TimeSpan.FromSeconds(vorbis.TotalSamples / (double) vorbis.SampleRate);
-            return new AudioStream(handle, length, (int) vorbis.Channels, name, vorbis.Title, vorbis.Artist);
-        }
-
-        public AudioStream LoadAudioWav(Stream stream, string? name = null)
-        {
-            var wav = _readWav(stream);
-
-            var buffer = AL.GenBuffer();
-
-            ALFormat format;
-            if (wav.BitsPerSample == 16)
-            {
-                if (wav.NumChannels == 1)
-                {
-                    format = ALFormat.Mono16;
-                }
-                else if (wav.NumChannels == 2)
-                {
-                    format = ALFormat.Stereo16;
-                }
-                else
-                {
-                    throw new InvalidOperationException("Unable to load audio with more than 2 channels.");
-                }
-            }
-            else if (wav.BitsPerSample == 8)
-            {
-                if (wav.NumChannels == 1)
-                {
-                    format = ALFormat.Mono8;
-                }
-                else if (wav.NumChannels == 2)
-                {
-                    format = ALFormat.Stereo8;
-                }
-                else
-                {
-                    throw new InvalidOperationException("Unable to load audio with more than 2 channels.");
-                }
-            }
-            else
-            {
-                throw new InvalidOperationException("Unable to load wav with bits per sample different from 8 or 16");
-            }
-
-            unsafe
-            {
-                fixed (byte* ptr = wav.Data.Span)
-                {
-                    AL.BufferData(buffer, format, (IntPtr) ptr, wav.Data.Length, wav.SampleRate);
-                }
-            }
-
-            _checkAlError();
-
-            var handle = new ClydeHandle(_audioSampleBuffers.Count);
-            _audioSampleBuffers.Add(new LoadedAudioSample(buffer));
-            var length = TimeSpan.FromSeconds(wav.Data.Length / (double) wav.BlockAlign / wav.SampleRate);
-            return new AudioStream(handle, length, wav.NumChannels, name);
-        }
-
-        public AudioStream LoadAudioRaw(ReadOnlySpan<short> samples, int channels, int sampleRate, string? name = null)
-        {
-            var fmt = channels switch
-            {
-                1 => ALFormat.Mono16,
-                2 => ALFormat.Stereo16,
-                _ => throw new ArgumentOutOfRangeException(
-                    nameof(channels), "Only stereo and mono is currently supported")
-            };
-
-            var buffer = AL.GenBuffer();
-            _checkAlError();
-
-            unsafe
-            {
-                fixed (short* ptr = samples)
-                {
-                    AL.BufferData(buffer, fmt, (IntPtr) ptr, samples.Length * sizeof(short), sampleRate);
-                }
-            }
-
-            _checkAlError();
-
-            var handle = new ClydeHandle(_audioSampleBuffers.Count);
-            var length = TimeSpan.FromSeconds((double) samples.Length / channels / sampleRate);
-            _audioSampleBuffers.Add(new LoadedAudioSample(buffer));
-            return new AudioStream(handle, length, channels, name);
-        }
-
-        private sealed class LoadedAudioSample
-        {
-            public readonly int BufferHandle;
-
-            public LoadedAudioSample(int bufferHandle)
-            {
-                BufferHandle = bufferHandle;
-            }
-        }
-    }
-}

Robust.Client/Graphics/Audio/ClydeAudioHeadless.cs

@@ -1,80 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Threading.Tasks;
-using JetBrains.Annotations;
-using Robust.Client.Audio;
-using Robust.Client.Input;
-using Robust.Client.UserInterface.CustomControls;
-using Robust.Shared.Map;
-using Robust.Shared.Maths;
-using Robust.Shared.Timing;
-using SixLabors.ImageSharp;
-using SixLabors.ImageSharp.PixelFormats;
-using Color = Robust.Shared.Maths.Color;
-
-namespace Robust.Client.Graphics.Audio
-{
-    /// <summary>
-    ///     Hey look, it's ClydeAudio's evil twin brother!
-    /// </summary>
-    [UsedImplicitly]
-    internal sealed class ClydeAudioHeadless : IClydeAudio, IClydeAudioInternal
-    {
-        public bool InitializePostWindowing()
-        {
-            return true;
-        }
-
-        public void FrameProcess(FrameEventArgs eventArgs)
-        {
-        }
-
-        public void Shutdown()
-        {
-        }
-
-        public AudioStream LoadAudioOggVorbis(Stream stream, string? name = null)
-        {
-            // TODO: Might wanna actually load this so the length gets reported correctly.
-            return new(default, default, 1, name);
-        }
-
-        public AudioStream LoadAudioWav(Stream stream, string? name = null)
-        {
-            // TODO: Might wanna actually load this so the length gets reported correctly.
-            return new(default, default, 1, name);
-        }
-
-        public AudioStream LoadAudioRaw(ReadOnlySpan<short> samples, int channels, int sampleRate, string? name = null)
-        {
-            // TODO: Might wanna actually load this so the length gets reported correctly.
-            return new(default, default, channels, name);
-        }
-
-        public IClydeAudioSource CreateAudioSource(AudioStream stream)
-        {
-            return DummyAudioSource.Instance;
-        }
-
-        public IClydeBufferedAudioSource CreateBufferedAudioSource(int buffers, bool floatAudio = false)
-        {
-            return DummyBufferedAudioSource.Instance;
-        }
-
-        public void SetMasterVolume(float newVolume)
-        {
-            // Nada.
-        }
-
-        public void DisposeAllAudio()
-        {
-            // Nada.
-        }
-
-        public void StopAllAudio()
-        {
-            // Nada.
-        }
-    }
-}

Robust.Client/Graphics/Audio/DummyAudioSource.cs

@@ -1,102 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Numerics;
-using System.Threading.Tasks;
-using JetBrains.Annotations;
-using Robust.Client.Audio;
-using Robust.Client.Input;
-using Robust.Client.UserInterface.CustomControls;
-using Robust.Shared.Map;
-using Robust.Shared.Maths;
-using Robust.Shared.Timing;
-using SixLabors.ImageSharp;
-using SixLabors.ImageSharp.PixelFormats;
-using Color = Robust.Shared.Maths.Color;
-
-namespace Robust.Client.Graphics.Audio
-{
-    /// <summary>
-    ///     Hey look, it's ClydeAudio.AudioSource's evil twin brother!
-    /// </summary>
-    [Virtual]
-    internal class DummyAudioSource : IClydeAudioSource
-    {
-        public static DummyAudioSource Instance { get; } = new();
-
-        public bool IsPlaying => default;
-        public bool IsLooping { get; set; }
-
-        public void Dispose()
-        {
-            // Nada.
-        }
-
-        public void StartPlaying()
-        {
-            // Nada.
-        }
-
-        public void StopPlaying()
-        {
-            // Nada.
-        }
-
-        public bool IsGlobal { get; }
-
-        public bool SetPosition(Vector2 position)
-        {
-            return true;
-        }
-
-        public void SetPitch(float pitch)
-        {
-            // Nada.
-        }
-
-        public void SetGlobal()
-        {
-            // Nada.
-        }
-
-        public void SetVolume(float decibels)
-        {
-            // Nada.
-        }
-
-        public void SetVolumeDirect(float gain)
-        {
-            // Nada.
-        }
-
-        public void SetMaxDistance(float maxDistance)
-        {
-            // Nada.
-        }
-
-        public void SetRolloffFactor(float rolloffFactor)
-        {
-            // Nada.
-        }
-
-        public void SetReferenceDistance(float refDistance)
-        {
-            // Nada.
-        }
-
-        public void SetOcclusion(float blocks)
-        {
-            // Nada.
-        }
-
-        public void SetPlaybackPosition(float seconds)
-        {
-            // Nada.
-        }
-
-        public void SetVelocity(Vector2 velocity)
-        {
-            // Nada.
-        }
-    }
-}

Robust.Client/Graphics/Audio/FallbackProxyClydeAudio.cs

@@ -1,36 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Threading.Tasks;
-using JetBrains.Annotations;
-using Robust.Client.Audio;
-using Robust.Client.Input;
-using Robust.Shared.Timing;
-using Robust.Shared.IoC;
-
-namespace Robust.Client.Graphics.Audio
-{
-    /// <summary>
-    ///     For "start ss14 with no audio devices" Smugleaf
-    /// </summary>
-    [UsedImplicitly]
-    internal sealed class FallbackProxyClydeAudio : ProxyClydeAudio
-    {
-        [Dependency] private readonly IDependencyCollection _deps = default!;
-
-        public override bool InitializePostWindowing()
-        {
-            // Deliberate lack of base call here (see base implementation for comments as to why there even is a base)
-
-            ActualImplementation = new ClydeAudio();
-            _deps.InjectDependencies(ActualImplementation, true);
-            if (ActualImplementation.InitializePostWindowing())
-                return true;
-
-            // If we get here, that failed, so use the fallback
-            ActualImplementation = new ClydeAudioHeadless();
-            _deps.InjectDependencies(ActualImplementation, true);
-            return ActualImplementation.InitializePostWindowing();
-        }
-    }
-}

Robust.Client/Graphics/Audio/ProxyClydeAudio.cs

@@ -1,82 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Threading.Tasks;
-using JetBrains.Annotations;
-using Robust.Client.Audio;
-using Robust.Client.Input;
-using Robust.Client.UserInterface.CustomControls;
-using Robust.Shared.Map;
-using Robust.Shared.Maths;
-using Robust.Shared.Timing;
-using SixLabors.ImageSharp;
-using SixLabors.ImageSharp.PixelFormats;
-using Color = Robust.Shared.Maths.Color;
-
-namespace Robust.Client.Graphics.Audio
-{
-    /// <summary>
-    ///     For "start ss14 with no audio devices" Smugleaf
-    /// </summary>
-    [UsedImplicitly]
-    internal abstract class ProxyClydeAudio : IClydeAudio, IClydeAudioInternal
-    {
-        protected IClydeAudioInternal ActualImplementation = default!;
-
-        public virtual bool InitializePostWindowing()
-        {
-            // This particular implementation exists to be overridden because removing this method causes C# to complain
-            return ActualImplementation.InitializePostWindowing();
-        }
-
-        public void FrameProcess(FrameEventArgs eventArgs)
-        {
-            ActualImplementation.FrameProcess(eventArgs);
-        }
-
-        public void Shutdown()
-        {
-            ActualImplementation.Shutdown();
-        }
-
-        public AudioStream LoadAudioOggVorbis(Stream stream, string? name = null)
-        {
-            return ActualImplementation.LoadAudioOggVorbis(stream, name);
-        }
-
-        public AudioStream LoadAudioWav(Stream stream, string? name = null)
-        {
-            return ActualImplementation.LoadAudioWav(stream, name);
-        }
-
-        public AudioStream LoadAudioRaw(ReadOnlySpan<short> samples, int channels, int sampleRate, string? name = null)
-        {
-            return ActualImplementation.LoadAudioRaw(samples, channels, sampleRate, name);
-        }
-
-        public IClydeAudioSource? CreateAudioSource(AudioStream stream)
-        {
-            return ActualImplementation.CreateAudioSource(stream);
-        }
-
-        public IClydeBufferedAudioSource CreateBufferedAudioSource(int buffers, bool floatAudio = false)
-        {
-            return ActualImplementation.CreateBufferedAudioSource(buffers, floatAudio);
-        }
-
-        public void SetMasterVolume(float newVolume)
-        {
-            ActualImplementation.SetMasterVolume(newVolume);
-        }
-
-        public void DisposeAllAudio()
-        {
-            ActualImplementation.DisposeAllAudio();
-        }
-
-        public void StopAllAudio()
-        {
-            ActualImplementation.StopAllAudio();
-        }
-    }
-}

Robust.Client/Graphics/Clyde/Clyde.HLR.cs

@@ -512,7 +512,7 @@ namespace Robust.Client.Graphics.Clyde
                         RenderOverlays(viewport, OverlaySpace.WorldSpaceBelowFOV, worldAABB, worldBounds);
                     }
 
-                    if (_lightManager.Enabled && _lightManager.DrawHardFov && eye.DrawFov)
+                    if (_lightManager.Enabled && _lightManager.DrawHardFov && eye.DrawLight && eye.DrawFov)
                     {
                         ApplyFovToBuffer(viewport, eye);
                     }

Robust.Client/Graphics/Clyde/Clyde.LightRendering.cs

@@ -97,6 +97,9 @@ namespace Robust.Client.Graphics.Clyde
 
         private (PointLightComponent light, Vector2 pos, float distanceSquared, Angle rot)[] _lightsToRenderList = default!;
 
+        private LightCapacityComparer _lightCap = new();
+        private ShadowCapacityComparer _shadowCap = new ShadowCapacityComparer();
+
         private unsafe void InitLighting()
         {
 
@@ -332,7 +335,7 @@ namespace Robust.Client.Graphics.Clyde
 
         private void DrawLightsAndFov(Viewport viewport, Box2Rotated worldBounds, Box2 worldAABB, IEye eye)
         {
-            if (!_lightManager.Enabled)
+            if (!_lightManager.Enabled || !eye.DrawLight)
             {
                 return;
             }
@@ -570,6 +573,28 @@ namespace Robust.Client.Graphics.Clyde
             return true;
         }
 
+        private sealed class LightCapacityComparer : IComparer<(PointLightComponent light, Vector2 pos, float distanceSquared, Angle rot)>
+        {
+            public int Compare(
+                (PointLightComponent light, Vector2 pos, float distanceSquared, Angle rot) x,
+                (PointLightComponent light, Vector2 pos, float distanceSquared, Angle rot) y)
+            {
+                if (x.light.CastShadows && !y.light.CastShadows) return 1;
+                if (!x.light.CastShadows && y.light.CastShadows) return -1;
+                return 0;
+            }
+        }
+
+        private sealed class ShadowCapacityComparer : IComparer<(PointLightComponent light, Vector2 pos, float distanceSquared, Angle rot)>
+        {
+            public int Compare(
+                (PointLightComponent light, Vector2 pos, float distanceSquared, Angle rot) x,
+                (PointLightComponent light, Vector2 pos, float distanceSquared, Angle rot) y)
+            {
+                return x.distanceSquared.CompareTo(y.distanceSquared);
+            }
+        }
+
         private (int count, Box2 expandedBounds) GetLightsToRender(
             MapId map,
             in Box2Rotated worldBounds,
@@ -595,20 +620,10 @@ namespace Robust.Client.Graphics.Clyde
 
                 // First, partition the array based on whether the lights are shadow casting or not
                 // (non shadow casting lights should be the first partition, shadow casting lights the second)
-                Array.Sort(_lightsToRenderList, 0, state.count,
-                    Comparer<(PointLightComponent light, Vector2 pos, float distanceSquared)>.Create((x, y) =>
-                    {
-                        if (x.light.CastShadows && !y.light.CastShadows) return 1;
-                        else if (!x.light.CastShadows && y.light.CastShadows) return -1;
-                        else return 0;
-                    }));
+                Array.Sort(_lightsToRenderList, 0, state.count, _lightCap);
 
                 // Next, sort just the shadow casting lights by distance.
-                Array.Sort(_lightsToRenderList, state.count - state.shadowCastingCount, state.shadowCastingCount,
-                    Comparer<(PointLightComponent light, Vector2 pos, float distanceSquared)>.Create((x, y) =>
-                    {
-                        return x.distanceSquared.CompareTo(y.distanceSquared);
-                    }));
+                Array.Sort(_lightsToRenderList, state.count - state.shadowCastingCount, state.shadowCastingCount, _shadowCap);
 
                 // Then effectively delete the furthest lights, by setting the end of the array to exclude N
                 // number of shadow casting lights (where N is the number above the max number per scene.)

Robust.Client/Graphics/Clyde/Clyde.Windowing.cs

@@ -260,14 +260,14 @@ namespace Robust.Client.Graphics.Clyde
                 yield break;
             }
 
-            foreach (var file in _resourceCache.ContentFindFiles(_windowIconPath))
+            foreach (var file in _resManager.ContentFindFiles(_windowIconPath))
             {
                 if (file.Extension != "png")
                 {
                     continue;
                 }
 
-                using var stream = _resourceCache.ContentFileRead(file);
+                using var stream = _resManager.ContentFileRead(file);
                 yield return Image.Load<Rgba32>(stream);
             }
         }

Robust.Client/Graphics/Clyde/Clyde.cs

@@ -11,6 +11,7 @@ using Robust.Client.ResourceManagement;
 using Robust.Client.UserInterface;
 using Robust.Shared;
 using Robust.Shared.Configuration;
+using Robust.Shared.ContentPack;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Graphics;
 using Robust.Shared.IoC;
@@ -36,6 +37,7 @@ namespace Robust.Client.Graphics.Clyde
         [Dependency] private readonly IMapManager _mapManager = default!;
         [Dependency] private readonly IOverlayManager _overlayManager = default!;
         [Dependency] private readonly IResourceCache _resourceCache = default!;
+        [Dependency] private readonly IResourceManager _resManager = default!;
         [Dependency] private readonly IUserInterfaceManagerInternal _userInterfaceManager = default!;
         [Dependency] private readonly IEntitySystemManager _entitySystemManager = default!;
         [Dependency] private readonly IGameTiming _gameTiming = default!;

Robust.Client/Graphics/Clyde/ClydeHeadless.cs

@@ -292,123 +292,6 @@ namespace Robust.Client.Graphics.Clyde
             }
         }
 
-        [Virtual]
-        private class DummyAudioSource : IClydeAudioSource
-        {
-            public static DummyAudioSource Instance { get; } = new();
-
-            public bool IsPlaying => default;
-            public bool IsLooping { get; set; }
-
-            public void Dispose()
-            {
-                // Nada.
-            }
-
-            public void StartPlaying()
-            {
-                // Nada.
-            }
-
-            public void StopPlaying()
-            {
-                // Nada.
-            }
-
-            public bool IsGlobal { get; }
-
-            public bool SetPosition(Vector2 position)
-            {
-                return true;
-            }
-
-            public void SetPitch(float pitch)
-            {
-                // Nada.
-            }
-
-            public void SetGlobal()
-            {
-                // Nada.
-            }
-
-            public void SetVolume(float decibels)
-            {
-                // Nada.
-            }
-
-            public void SetVolumeDirect(float gain)
-            {
-                // Nada.
-            }
-
-            public void SetMaxDistance(float maxDistance)
-            {
-                // Nada.
-            }
-
-            public void SetRolloffFactor(float rolloffFactor)
-            {
-                // Nada.
-            }
-
-            public void SetReferenceDistance(float refDistance)
-            {
-                // Nada.
-            }
-
-            public void SetOcclusion(float blocks)
-            {
-                // Nada.
-            }
-
-            public void SetPlaybackPosition(float seconds)
-            {
-                // Nada.
-            }
-
-            public void SetVelocity(Vector2 velocity)
-            {
-                // Nada.
-            }
-        }
-
-        private sealed class DummyBufferedAudioSource : DummyAudioSource, IClydeBufferedAudioSource
-        {
-            public new static DummyBufferedAudioSource Instance { get; } = new();
-            public int SampleRate { get; set; } = 0;
-
-            public void WriteBuffer(int handle, ReadOnlySpan<ushort> data)
-            {
-                // Nada.
-            }
-
-            public void WriteBuffer(int handle, ReadOnlySpan<float> data)
-            {
-                // Nada.
-            }
-
-            public void QueueBuffers(ReadOnlySpan<int> handles)
-            {
-                // Nada.
-            }
-
-            public void EmptyBuffers()
-            {
-                // Nada.
-            }
-
-            public void GetBuffersProcessed(Span<int> handles)
-            {
-                // Nada.
-            }
-
-            public int GetNumberOfBuffersProcessed()
-            {
-                return 0;
-            }
-        }
-
         private sealed class DummyTexture : OwnedTexture
         {
             public DummyTexture(Vector2i size) : base(size)

Robust.Client/Graphics/ClydeHandle.cs

@@ -1,54 +1,54 @@
 using System;
+using Robust.Shared.Graphics;
 
-namespace Robust.Client.Graphics
+namespace Robust.Client.Graphics;
+
+internal readonly struct ClydeHandle : IEquatable<ClydeHandle>, IClydeHandle
 {
-    internal struct ClydeHandle : IEquatable<ClydeHandle>
+    public ClydeHandle(long value)
     {
-        public ClydeHandle(long value)
-        {
-            Value = value;
-        }
+        Value = value;
+    }
 
-        public readonly long Value;
+    public long Value { get; }
 
-        public static explicit operator ClydeHandle(long x)
-        {
-            return new(x);
-        }
+    public static explicit operator ClydeHandle(long x)
+    {
+        return new(x);
+    }
 
-        public static explicit operator long(ClydeHandle h)
-        {
-            return h.Value;
-        }
+    public static explicit operator long(ClydeHandle h)
+    {
+        return h.Value;
+    }
 
-        public bool Equals(ClydeHandle other)
-        {
-            return Value == other.Value;
-        }
+    public bool Equals(ClydeHandle other)
+    {
+        return Value == other.Value;
+    }
 
-        public override bool Equals(object? obj)
-        {
-            return obj is ClydeHandle other && Equals(other);
-        }
+    public override bool Equals(object? obj)
+    {
+        return obj is ClydeHandle other && Equals(other);
+    }
 
-        public override int GetHashCode()
-        {
-            return Value.GetHashCode();
-        }
+    public override int GetHashCode()
+    {
+        return Value.GetHashCode();
+    }
 
-        public static bool operator ==(ClydeHandle left, ClydeHandle right)
-        {
-            return left.Value == right.Value;
-        }
+    public static bool operator ==(ClydeHandle left, ClydeHandle right)
+    {
+        return left.Value == right.Value;
+    }
 
-        public static bool operator !=(ClydeHandle left, ClydeHandle right)
-        {
-            return left.Value != right.Value;
-        }
+    public static bool operator !=(ClydeHandle left, ClydeHandle right)
+    {
+        return left.Value != right.Value;
+    }
 
-        public override string ToString()
-        {
-            return $"ClydeHandle {Value}";
-        }
+    public override string ToString()
+    {
+        return $"ClydeHandle {Value}";
     }
 }

Robust.Client/Graphics/Drawing/DrawingHandleScreen.cs

@@ -114,9 +114,10 @@ namespace Robust.Client.Graphics
             {
                 if (rune == new Rune('\n'))
                 {
-                    baseLine.X = 0f;
                     baseLine.Y += lineHeight;
                     advanceTotal.Y += lineHeight;
+                    advanceTotal.X = Math.Max(advanceTotal.X, baseLine.X);
+                    baseLine.X = 0f;
                     continue;
                 }
 
@@ -126,7 +127,6 @@ namespace Robust.Client.Graphics
                     continue;
 
                 var advance = metrics.Value.Advance;
-                advanceTotal.X += advance;
                 baseLine += new Vector2(advance, 0);
             }
 

Robust.Client/Graphics/IClydeAudio.cs

@@ -1,23 +0,0 @@
-using System;
-using System.IO;
-using Robust.Client.Audio;
-
-namespace Robust.Client.Graphics
-{
-    public interface IClydeAudio
-    {
-        // AUDIO SYSTEM DOWN BELOW.
-        AudioStream LoadAudioOggVorbis(Stream stream, string? name = null);
-        AudioStream LoadAudioWav(Stream stream, string? name = null);
-        AudioStream LoadAudioRaw(ReadOnlySpan<short> samples, int channels, int sampleRate, string? name = null);
-
-        void SetMasterVolume(float newVolume);
-
-        void DisposeAllAudio();
-
-        void StopAllAudio();
-
-        IClydeAudioSource? CreateAudioSource(AudioStream stream);
-        IClydeBufferedAudioSource CreateBufferedAudioSource(int buffers, bool floatAudio=false);
-    }
-}

Robust.Client/Graphics/IClydeAudioInternal.cs

@@ -1,16 +0,0 @@
-using System;
-using Robust.Client.Input;
-using Robust.Client.UserInterface;
-using Robust.Shared.Map;
-using Robust.Shared.Maths;
-using Robust.Shared.Timing;
-
-namespace Robust.Client.Graphics
-{
-    internal interface IClydeAudioInternal : IClydeAudio
-    {
-        bool InitializePostWindowing();
-        void FrameProcess(FrameEventArgs eventArgs);
-        void Shutdown();
-    }
-}

Robust.Client/Graphics/IClydeAudioSource.cs

@@ -1,31 +0,0 @@
-using System;
-using System.Numerics;
-using JetBrains.Annotations;
-using Robust.Shared.Maths;
-
-namespace Robust.Client.Graphics
-{
-    public interface IClydeAudioSource : IDisposable
-    {
-        void StartPlaying();
-        void StopPlaying();
-
-        bool IsPlaying { get; }
-
-        bool IsLooping { get; set; }
-        bool IsGlobal { get; }
-
-        [MustUseReturnValue]
-        bool SetPosition(Vector2 position);
-        void SetPitch(float pitch);
-        void SetGlobal();
-        void SetVolume(float decibels);
-        void SetVolumeDirect(float gain);
-        void SetMaxDistance(float maxDistance);
-        void SetRolloffFactor(float rolloffFactor);
-        void SetReferenceDistance(float refDistance);
-        void SetOcclusion(float blocks);
-        void SetPlaybackPosition(float seconds);
-        void SetVelocity(Vector2 velocity);
-    }
-}

Robust.Client/Graphics/IClydeBufferedAudioSource.cs

@@ -1,15 +0,0 @@
-using System;
-
-namespace Robust.Client.Graphics
-{
-    public interface IClydeBufferedAudioSource : IClydeAudioSource
-    {
-        int SampleRate { get; set; }
-        int GetNumberOfBuffersProcessed();
-        void GetBuffersProcessed(Span<int> handles);
-        void WriteBuffer(int handle, ReadOnlySpan<ushort> data);
-        void WriteBuffer(int handle, ReadOnlySpan<float> data);
-        void QueueBuffers(ReadOnlySpan<int> handles);
-        void EmptyBuffers();
-    }
-}

Robust.Client/Graphics/Overlays/IOverlayManager.cs

@@ -4,32 +4,29 @@ using System.Diagnostics.CodeAnalysis;
 using JetBrains.Annotations;
 using Robust.Shared.Timing;
 
-namespace Robust.Client.Graphics
+namespace Robust.Client.Graphics;
+
+[PublicAPI]
+public interface IOverlayManager
 {
+    bool AddOverlay(Overlay overlay);
 
-    [PublicAPI]
-    public interface IOverlayManager
-    {
-        bool AddOverlay(Overlay overlay);
+    bool RemoveOverlay(Overlay overlay);
+    bool RemoveOverlay(Type overlayClass);
+    bool RemoveOverlay<T>() where T : Overlay;
+    bool TryGetOverlay(Type overlayClass, [NotNullWhen(true)] out Overlay? overlay);
+    bool TryGetOverlay<T>([NotNullWhen(true)] out T? overlay) where T : Overlay;
 
-        bool RemoveOverlay(Overlay overlay);
-        bool RemoveOverlay(Type overlayClass);
-        bool RemoveOverlay<T>() where T : Overlay;
+    Overlay GetOverlay(Type overlayClass);
+    T GetOverlay<T>() where T : Overlay;
 
-        bool TryGetOverlay(Type overlayClass, [NotNullWhen(true)] out Overlay? overlay);
-        bool TryGetOverlay<T>([NotNullWhen(true)] out T? overlay) where T : Overlay;
+    bool HasOverlay(Type overlayClass);
+    bool HasOverlay<T>() where T : Overlay;
 
-        Overlay GetOverlay(Type overlayClass);
-        T GetOverlay<T>() where T : Overlay;
-
-        bool HasOverlay(Type overlayClass);
-        bool HasOverlay<T>() where T : Overlay;
-
-        IEnumerable<Overlay> AllOverlays { get; }
-    }
-
-    internal interface IOverlayManagerInternal : IOverlayManager
-    {
-        void FrameUpdate(FrameEventArgs args);
-    }
+    IEnumerable<Overlay> AllOverlays { get; }
+}
+
+internal interface IOverlayManagerInternal : IOverlayManager
+{
+    void FrameUpdate(FrameEventArgs args);
 }

Robust.Client/Graphics/Overlays/OverlayManager.cs

@@ -6,107 +6,106 @@ using Robust.Shared.Log;
 using Robust.Shared.Timing;
 using Robust.Shared.ViewVariables;
 
-namespace Robust.Client.Graphics
+namespace Robust.Client.Graphics;
+
+internal sealed class OverlayManager : IOverlayManagerInternal, IPostInjectInit
 {
-    internal sealed class OverlayManager : IOverlayManagerInternal, IPostInjectInit
+    [Dependency] private readonly ILogManager _logMan = default!;
+
+    [ViewVariables]
+    private readonly Dictionary<Type, Overlay> _overlays = new Dictionary<Type, Overlay>();
+    private ISawmill _logger = default!;
+
+    public IEnumerable<Overlay> AllOverlays => _overlays.Values;
+
+    public void FrameUpdate(FrameEventArgs args)
     {
-        [Dependency] private readonly ILogManager _logMan = default!;
-
-        [ViewVariables]
-        private readonly Dictionary<Type, Overlay> _overlays = new Dictionary<Type, Overlay>();
-        private ISawmill _logger = default!;
-
-        public IEnumerable<Overlay> AllOverlays => _overlays.Values;
-
-        public void FrameUpdate(FrameEventArgs args)
+        foreach (var overlay in _overlays.Values)
         {
-            foreach (var overlay in _overlays.Values)
-            {
-                overlay.FrameUpdate(args);
-            }
+            overlay.FrameUpdate(args);
         }
+    }
 
-        public bool AddOverlay(Overlay overlay)
+    public bool AddOverlay(Overlay overlay)
+    {
+        if (_overlays.ContainsKey(overlay.GetType()))
+            return false;
+        _overlays.Add(overlay.GetType(), overlay);
+        return true;
+    }
+
+    public bool RemoveOverlay(Type overlayClass)
+    {
+        if (!overlayClass.IsSubclassOf(typeof(Overlay)))
         {
-            if (_overlays.ContainsKey(overlay.GetType()))
-                return false;
-            _overlays.Add(overlay.GetType(), overlay);
-            return true;
-        }
-
-        public bool RemoveOverlay(Type overlayClass)
-        {
-            if (!overlayClass.IsSubclassOf(typeof(Overlay)))
-            {
-                _logger.Error($"RemoveOverlay was called with arg: {overlayClass}, which is not a subclass of Overlay!");
-                return false;
-            }
-
-            return _overlays.Remove(overlayClass);
-        }
-
-        public bool RemoveOverlay<T>() where T : Overlay
-        {
-            return RemoveOverlay(typeof(T));
-        }
-
-        public bool RemoveOverlay(Overlay overlay)
-        {
-            return _overlays.Remove(overlay.GetType());
-        }
-
-        public bool TryGetOverlay(Type overlayClass, [NotNullWhen(true)] out Overlay? overlay)
-        {
-            overlay = null;
-            if (!overlayClass.IsSubclassOf(typeof(Overlay)))
-            {
-                _logger.Error($"TryGetOverlay was called with arg: {overlayClass}, which is not a subclass of Overlay!");
-                return false;
-            }
-
-            return _overlays.TryGetValue(overlayClass, out overlay);
-        }
-
-        public bool TryGetOverlay<T>([NotNullWhen(true)] out T? overlay) where T : Overlay
-        {
-            overlay = null;
-            if (_overlays.TryGetValue(typeof(T), out Overlay? toReturn))
-            {
-                overlay = (T)toReturn;
-                return true;
-            }
-
+            _logger.Error($"RemoveOverlay was called with arg: {overlayClass}, which is not a subclass of Overlay!");
             return false;
         }
 
-        public Overlay GetOverlay(Type overlayClass)
+        return _overlays.Remove(overlayClass);
+    }
+
+    public bool RemoveOverlay<T>() where T : Overlay
+    {
+        return RemoveOverlay(typeof(T));
+    }
+
+    public bool RemoveOverlay(Overlay overlay)
+    {
+        return _overlays.Remove(overlay.GetType());
+    }
+
+    public bool TryGetOverlay(Type overlayClass, [NotNullWhen(true)] out Overlay? overlay)
+    {
+        overlay = null;
+        if (!overlayClass.IsSubclassOf(typeof(Overlay)))
         {
-            return _overlays[overlayClass];
+            _logger.Error($"TryGetOverlay was called with arg: {overlayClass}, which is not a subclass of Overlay!");
+            return false;
         }
 
-        public T GetOverlay<T>() where T : Overlay
+        return _overlays.TryGetValue(overlayClass, out overlay);
+    }
+
+    public bool TryGetOverlay<T>([NotNullWhen(true)] out T? overlay) where T : Overlay
+    {
+        overlay = null;
+        if (_overlays.TryGetValue(typeof(T), out Overlay? toReturn))
         {
-            return (T)_overlays[typeof(T)];
+            overlay = (T)toReturn;
+            return true;
         }
 
-        public bool HasOverlay(Type overlayClass)
-        {
-            if (!overlayClass.IsSubclassOf(typeof(Overlay)))
-            {
-                _logger.Error($"HasOverlay was called with arg: {overlayClass}, which is not a subclass of Overlay!");
-            }
+        return false;
+    }
 
-            return _overlays.ContainsKey(overlayClass);
+    public Overlay GetOverlay(Type overlayClass)
+    {
+        return _overlays[overlayClass];
+    }
+
+    public T GetOverlay<T>() where T : Overlay
+    {
+        return (T)_overlays[typeof(T)];
+    }
+
+    public bool HasOverlay(Type overlayClass)
+    {
+        if (!overlayClass.IsSubclassOf(typeof(Overlay)))
+        {
+            _logger.Error($"HasOverlay was called with arg: {overlayClass}, which is not a subclass of Overlay!");
         }
 
-        public bool HasOverlay<T>() where T : Overlay
-        {
-            return _overlays.ContainsKey(typeof(T));
-        }
+        return _overlays.ContainsKey(overlayClass);
+    }
 
-        void IPostInjectInit.PostInject()
-        {
-            _logger = _logMan.GetSawmill("overlay");
-        }
+    public bool HasOverlay<T>() where T : Overlay
+    {
+        return _overlays.ContainsKey(typeof(T));
+    }
+
+    void IPostInjectInit.PostInject()
+    {
+        _logger = _logMan.GetSawmill("overlay");
     }
 }

Robust.Client/Map/ClydeTileDefinitionManager.cs

@@ -7,6 +7,7 @@ using Robust.Client.Map;
 using Robust.Client.ResourceManagement;
 using Robust.Client.Utility;
 using Robust.Shared.Console;
+using Robust.Shared.ContentPack;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Graphics;
 using Robust.Shared.IoC;
@@ -22,7 +23,7 @@ namespace Robust.Client.Map
 {
     internal sealed class ClydeTileDefinitionManager : TileDefinitionManager, IClydeTileDefinitionManager
     {
-        [Dependency] private readonly IResourceCache _resourceCache = default!;
+        [Dependency] private readonly IResourceManager _manager = default!;
 
         private Texture? _tileTextureAtlas;
 
@@ -86,7 +87,7 @@ namespace Robust.Client.Map
                     0, (h - EyeManager.PixelsPerMeter) / h,
                     tileSize / w, tileSize / h);
                 Image<Rgba32> image;
-                using (var stream = _resourceCache.ContentFileRead("/Textures/noTile.png"))
+                using (var stream = _manager.ContentFileRead("/Textures/noTile.png"))
                 {
                     image = Image.Load<Rgba32>(stream);
                 }
@@ -110,7 +111,7 @@ namespace Robust.Client.Map
                 // Already know it's not null above
                 var path = def.Sprite!.Value;
 
-                using (var stream = _resourceCache.ContentFileRead(path))
+                using (var stream = _manager.ContentFileRead(path))
                 {
                     image = Image.Load<Rgba32>(stream);
                 }

Robust.Client/Map/TileEdgeOverlay.cs

@@ -42,15 +42,20 @@ public sealed class TileEdgeOverlay : Overlay
         _grids.Clear();
         _mapManager.FindGridsIntersecting(args.MapId, args.WorldBounds, ref _grids);
 
-        var xformQuery = _entManager.GetEntityQuery<TransformComponent>();
+        var mapSystem = _entManager.System<SharedMapSystem>();
+        var xformSystem = _entManager.System<SharedTransformSystem>();
+
         foreach (var grid in _grids)
         {
             var tileSize = grid.Comp.TileSize;
             var tileDimensions = new Vector2(tileSize, tileSize);
-            var xform = xformQuery.GetComponent(grid);
-            args.WorldHandle.SetTransform(xform.WorldMatrix);
+            var (_, _, worldMatrix, invMatrix) = xformSystem.GetWorldPositionRotationMatrixWithInv(grid.Owner);
+            args.WorldHandle.SetTransform(worldMatrix);
+            var localAABB = invMatrix.TransformBox(args.WorldBounds);
 
-            foreach (var tileRef in grid.Comp.GetTilesIntersecting(args.WorldBounds, false))
+            var enumerator = mapSystem.GetLocalTilesEnumerator(grid.Owner, grid.Comp, localAABB, false);
+
+            while (enumerator.MoveNext(out var tileRef))
             {
                 var tileDef = _tileDefManager[tileRef.Tile.TypeId];
 
@@ -66,7 +71,7 @@ public sealed class TileEdgeOverlay : Overlay
                             continue;
 
                         var neighborIndices = new Vector2i(tileRef.GridIndices.X + x, tileRef.GridIndices.Y + y);
-                        var neighborTile = grid.Comp.GetTileRef(neighborIndices);
+                        var neighborTile = mapSystem.GetTileRef(grid.Owner, grid.Comp, neighborIndices);
                         var neighborDef = _tileDefManager[neighborTile.Tile.TypeId];
 
                         // If it's the same tile then no edge to be drawn.
@@ -118,9 +123,9 @@ public sealed class TileEdgeOverlay : Overlay
                         }
 
                         if (angle == Angle.Zero)
-                            args.WorldHandle.DrawTextureRect(texture, box);
+                            args.WorldHandle.DrawTextureRect(texture.Texture, box);
                         else
-                            args.WorldHandle.DrawTextureRect(texture, new Box2Rotated(box, angle, box.Center));
+                            args.WorldHandle.DrawTextureRect(texture.Texture, new Box2Rotated(box, angle, box.Center));
                     }
                 }
             }

Robust.Client/Physics/PhysicsSystem.Predict.cs

@@ -1,6 +1,5 @@
 using System.Buffers;
 using System.Collections.Generic;
-using Robust.Client.Player;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map.Components;
 using Robust.Shared.Physics;
@@ -8,6 +7,7 @@ using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Dynamics;
 using Robust.Shared.Physics.Dynamics.Contacts;
 using Robust.Shared.Physics.Systems;
+using Robust.Shared.Player;
 using Robust.Shared.Utility;
 
 namespace Robust.Client.Physics;

Robust.Client/Player/IPlayerManager.cs

@@ -15,15 +15,22 @@ public interface IPlayerManager : ISharedPlayerManager
     event Action? PlayerListUpdated;
 
     /// <summary>
-    /// Invoked when <see cref="ISharedPlayerManager.LocalSession"/> gets attached to a new entity. See also <see cref="LocalPlayerAttachedEvent"/>
+    /// Invoked when <see cref="ISharedPlayerManager.LocalSession"/> gets attached to a new entity, or when the local
+    /// session gets updated. See also <see cref="LocalPlayerAttachedEvent"/>
     /// </summary>
     event Action<EntityUid>? LocalPlayerAttached;
 
     /// <summary>
-    /// Invoked when <see cref="ISharedPlayerManager.LocalSession"/> gets detached from new entity. See also <see cref="LocalPlayerDetachedEvent"/>
+    /// Invoked when <see cref="ISharedPlayerManager.LocalSession"/> gets detached from an entity, or when the local
+    /// session gets updated. See also <see cref="LocalPlayerDetachedEvent"/>
     /// </summary>
     event Action<EntityUid>? LocalPlayerDetached;
 
+    /// <summary>
+    /// Invoked whenever <see cref="ISharedPlayerManager.LocalSession"/> changes.
+    /// </summary>
+    event Action<(ICommonSession? Old, ICommonSession? New)>? LocalSessionChanged;
+
     void ApplyPlayerStates(IReadOnlyCollection<SessionState> list);
 
     /// <summary>
@@ -38,34 +45,8 @@ public interface IPlayerManager : ISharedPlayerManager
     /// </summary>
     void SetupMultiplayer(INetChannel channel);
 
+    void SetLocalSession(ICommonSession session);
+
     [Obsolete("Use LocalSession instead")]
     LocalPlayer? LocalPlayer { get;}
 }
-
-/// <summary>
-/// ECS event that gets raised when the local player gets attached to a new entity. The event is both broadcast and
-/// raised directed at the new entity.
-/// </summary>
-public sealed class LocalPlayerAttachedEvent : EntityEventArgs
-{
-    public LocalPlayerAttachedEvent(EntityUid entity)
-    {
-        Entity = entity;
-    }
-
-    public EntityUid Entity { get; }
-}
-
-/// <summary>
-/// ECS event that gets raised when the local player gets detached from an entity. The event is both broadcast and
-/// raised directed at the new entity.
-/// </summary>
-public sealed class LocalPlayerDetachedEvent : EntityEventArgs
-{
-    public LocalPlayerDetachedEvent(EntityUid entity)
-    {
-        Entity = entity;
-    }
-
-    public EntityUid Entity { get; }
-}

Robust.Client/Player/PlayerManager.cs

@@ -42,12 +42,13 @@ namespace Robust.Client.Player
         /// <inheritdoc />
         public override int MaxPlayers => _client.GameInfo?.ServerMaxPlayers ?? -1;
 
-        public LocalPlayer? LocalPlayer { get; set; }
+        public LocalPlayer? LocalPlayer { get; private set; }
 
         public event Action<SessionStatusEventArgs>? LocalStatusChanged;
         public event Action? PlayerListUpdated;
         public event Action<EntityUid>? LocalPlayerDetached;
         public event Action<EntityUid>? LocalPlayerAttached;
+        public event Action<(ICommonSession? Old, ICommonSession? New)>? LocalSessionChanged;
 
         /// <inheritdoc />
         public override void Initialize(int maxPlayers)
@@ -64,22 +65,14 @@ namespace Robust.Client.Player
                 LocalStatusChanged?.Invoke(e);
         }
 
-        /// <inheritdoc />
-        public override void Startup()
-        {
-            if (LocalSession == null)
-                throw new InvalidOperationException("LocalSession cannot be null");
-
-            LocalPlayer = new LocalPlayer(LocalSession);
-            base.Startup();
-        }
-
         public void SetupSinglePlayer(string name)
         {
             if (LocalSession != null)
                 throw new InvalidOperationException($"Player manager already running?");
 
-            LocalSession = CreateAndAddSession(default, name);
+            var session = CreateAndAddSession(default, name);
+            session.ClientSide = true;
+            SetLocalSession(session);
             Startup();
             PlayerListUpdated?.Invoke();
         }
@@ -89,18 +82,44 @@ namespace Robust.Client.Player
             if (LocalSession != null)
                 throw new InvalidOperationException($"Player manager already running?");
 
-            var session = CreateAndAddSession(channel.UserId, channel.UserName);
-            session.Channel = channel;
-            LocalSession = session;
+            SetLocalSession(CreateAndAddSession(channel));
             Startup();
             _network.ClientSendMessage(new MsgPlayerListReq());
         }
 
+        public void SetLocalSession(ICommonSession? session)
+        {
+            if (session == LocalSession)
+                return;
+
+            var old = LocalSession;
+
+            if (old?.AttachedEntity is {} oldUid)
+            {
+                LocalSession = null;
+                LocalPlayer = null;
+                Sawmill.Info($"Detaching local player from {EntManager.ToPrettyString(oldUid)}.");
+                EntManager.EventBus.RaiseLocalEvent(oldUid, new LocalPlayerDetachedEvent(oldUid), true);
+                LocalPlayerDetached?.Invoke(oldUid);
+            }
+
+            LocalSession = session;
+            LocalPlayer = session == null ? null : new LocalPlayer(session);
+            Sawmill.Info($"Changing local session from {old?.ToString() ?? "null"} to {session?.ToString() ?? "null"}.");
+            LocalSessionChanged?.Invoke((old, LocalSession));
+
+            if (session?.AttachedEntity is {} newUid)
+            {
+                Sawmill.Info($"Attaching local player to {EntManager.ToPrettyString(newUid)}.");
+                EntManager.EventBus.RaiseLocalEvent(newUid, new LocalPlayerAttachedEvent(newUid), true);
+                LocalPlayerAttached?.Invoke(newUid);
+            }
+        }
+
         /// <inheritdoc />
         public override void Shutdown()
         {
-            if (LocalSession != null)
-                SetAttachedEntity(LocalSession, null);
+            SetAttachedEntity(LocalSession, null, out _);
             LocalPlayer = null;
             LocalSession = null;
             _pendingStates.Clear();
@@ -108,16 +127,21 @@ namespace Robust.Client.Player
             PlayerListUpdated?.Invoke();
         }
 
-        public override void SetAttachedEntity(ICommonSession session, EntityUid? uid)
+        public override bool SetAttachedEntity(ICommonSession? session, EntityUid? uid, out ICommonSession? kicked, bool force = false)
         {
+            kicked = null;
+            if (session == null)
+                return false;
+
             if (session.AttachedEntity == uid)
-                return;
+                return true;
 
             var old = session.AttachedEntity;
-            base.SetAttachedEntity(session, uid);
+            if (!base.SetAttachedEntity(session, uid, out kicked, force))
+                return false;
 
             if (session != LocalSession)
-                return;
+                return true;
 
             if (old.HasValue)
             {
@@ -129,13 +153,13 @@ namespace Robust.Client.Player
             if (uid == null)
             {
                 Sawmill.Info($"Local player is no longer attached to any entity.");
-                return;
+                return true;
             }
 
             if (!EntManager.EntityExists(uid))
             {
                 Sawmill.Error($"Attempted to attach player to non-existent entity {uid}!");
-                return;
+                return true;
             }
 
             if (!EntManager.EnsureComponent(uid.Value, out EyeComponent eye))
@@ -148,6 +172,7 @@ namespace Robust.Client.Player
             Sawmill.Info($"Attaching local player to {EntManager.ToPrettyString(uid)}.");
             EntManager.EventBus.RaiseLocalEvent(uid.Value, new LocalPlayerAttachedEvent(uid.Value), true);
             LocalPlayerAttached?.Invoke(uid.Value);
+            return true;
         }
 
         public void ApplyPlayerStates(IReadOnlyCollection<SessionState> list)
@@ -193,7 +218,7 @@ namespace Robust.Client.Player
                     _pendingStates.Remove(state.UserId);
                 }
 
-                SetAttachedEntity(LocalSession, uid);
+                SetAttachedEntity(LocalSession, uid, out _, true);
                 SetStatus(LocalSession, state.Status);
             }
 
@@ -233,11 +258,10 @@ namespace Robust.Client.Player
                 {
                     // This is a new userid, so we create a new session.
                     DebugTools.Assert(state.UserId != LocalPlayer?.UserId);
-                    var newSession = CreateAndAddSession(state.UserId, state.Name);
+                    var newSession = (CommonSession) CreateAndAddSession(state.UserId, state.Name);
                     newSession.Ping = state.Ping;
-                    newSession.Name = state.Name;
                     SetStatus(newSession, state.Status);
-                    SetAttachedEntity(newSession, controlled);
+                    SetAttachedEntity(newSession, controlled, out _, true);
                     dirty = true;
                     continue;
                 }
@@ -256,7 +280,7 @@ namespace Robust.Client.Player
                 local.Name = state.Name;
                 local.Ping = state.Ping;
                 SetStatus(local, state.Status);
-                SetAttachedEntity(local, controlled);
+                SetAttachedEntity(local, controlled, out _, true);
             }
 
             // Remove old users. This only works if the provided state is a list of all players
@@ -264,10 +288,12 @@ namespace Robust.Client.Player
             {
                 foreach (var oldUser in InternalSessions.Keys.ToArray())
                 {
-                    // clear slot, player left
                     if (users.Contains(oldUser))
                         continue;
 
+                    if (InternalSessions[oldUser].ClientSide)
+                        continue;
+
                     DebugTools.Assert(oldUser != LocalUser
                                       || LocalUser == null
                                       || LocalUser == default(NetUserId),

Robust.Client/Replays/Playback/IReplayPlaybackManager.cs

@@ -2,6 +2,7 @@ using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameStates;
 using Robust.Shared.Network;
 using Robust.Shared.Replays;
 using Robust.Shared.Serialization.Markdown.Mapping;
@@ -128,6 +129,11 @@ public interface IReplayPlaybackManager
     /// </summary>
     event Action? ReplayUnpaused;
 
+    /// <summary>
+    /// Invoked just before a replay applies a game state.
+    /// </summary>
+    event Action<(GameState Current, GameState? Next)>? BeforeApplyState;
+
     /// <summary>
     /// If currently replaying a client-side recording, this is the user that recorded the replay.
     /// Useful for setting default observer spawn positions.
@@ -137,5 +143,5 @@ public interface IReplayPlaybackManager
     /// <summary>
     /// Fetches the entity that the <see cref="Recorder"/> is currently attached to.
     /// </summary>
-    public bool TryGetRecorderEntity([NotNullWhen(true)] out EntityUid? uid);
+    bool TryGetRecorderEntity([NotNullWhen(true)] out EntityUid? uid);
 }

Robust.Client/Replays/Playback/ReplayPlaybackManager.Checkpoint.cs

@@ -66,6 +66,7 @@ internal sealed partial class ReplayPlaybackManager
         _gameState.ClearDetachQueue();
         EnsureDetachedExist(checkpoint);
         _gameState.DetachImmediate(checkpoint.Detached);
+        BeforeApplyState?.Invoke((checkpoint.State, next));
         _gameState.ApplyGameState(checkpoint.State, next);
     }
 

Robust.Client/Replays/Playback/ReplayPlaybackManager.Time.cs

@@ -1,4 +1,5 @@
 using System;
+using Robust.Client.GameObjects;
 using Robust.Client.GameStates;
 using Robust.Shared.Utility;
 
@@ -58,7 +59,13 @@ internal sealed partial class ReplayPlaybackManager
 
             _timing.LastRealTick = _timing.LastProcessedTick = _timing.CurTick = Replay.CurTick;
             _gameState.UpdateFullRep(state, cloneDelta: true);
-            _gameState.ApplyGameState(state, Replay.NextState);
+
+            // Clear existing lerps
+            _entMan.EntitySysManager.GetEntitySystem<TransformSystem>().Reset();
+
+            var next = Replay.NextState;
+            BeforeApplyState?.Invoke((state, next));
+            _gameState.ApplyGameState(state, next);
             ProcessMessages(Replay.CurMessages, skipEffectEvents);
 
             // TODO REPLAYS block audio

Robust.Client/Replays/Playback/ReplayPlaybackManager.Update.cs

@@ -42,7 +42,9 @@ internal sealed partial class ReplayPlaybackManager
         {
             var state = Replay.CurState;
             _gameState.UpdateFullRep(state, cloneDelta: true);
-            _gameState.ApplyGameState(state, Replay.NextState);
+            var next = Replay.NextState;
+            BeforeApplyState?.Invoke((state, next));
+            _gameState.ApplyGameState(state, next);
             DebugTools.Assert(Replay.LastApplied >= state.FromSequence);
             DebugTools.Assert(Replay.LastApplied + 1 <= state.ToSequence);
             Replay.LastApplied = state.ToSequence;

Robust.Client/Replays/Playback/ReplayPlaybackManager.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
+using Robust.Client.Audio;
 using Robust.Client.Audio.Midi;
 using Robust.Client.Configuration;
 using Robust.Client.GameObjects;
@@ -10,8 +11,10 @@ using Robust.Client.Player;
 using Robust.Client.Timing;
 using Robust.Client.Upload;
 using Robust.Shared;
+using Robust.Shared.Audio;
 using Robust.Shared.Configuration;
 using Robust.Shared.GameObjects;
+using Robust.Shared.GameStates;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
 using Robust.Shared.Network;
@@ -27,7 +30,7 @@ internal sealed partial class ReplayPlaybackManager : IReplayPlaybackManager
     [Dependency] private readonly IBaseClient _client = default!;
     [Dependency] private readonly IMidiManager _midi = default!;
     [Dependency] private readonly IPlayerManager _player = default!;
-    [Dependency] private readonly IClydeAudio _clydeAudio = default!;
+    [Dependency] private readonly IAudioInternal _clydeAudio = default!;
     [Dependency] private readonly IClientGameTiming _timing = default!;
     [Dependency] private readonly IClientNetManager _netMan = default!;
     [Dependency] private readonly IComponentFactory _factory = default!;
@@ -44,6 +47,7 @@ internal sealed partial class ReplayPlaybackManager : IReplayPlaybackManager
     public event Action? ReplayPlaybackStopped;
     public event Action? ReplayPaused;
     public event Action? ReplayUnpaused;
+    public event Action<(GameState Current, GameState? Next)>? BeforeApplyState;
 
     public ReplayData? Replay { get; private set; }
     public NetUserId? Recorder => Replay?.Recorder;

Robust.Client/ResourceManagement/BaseResource.cs

@@ -1,36 +1,34 @@
-using System;
+using System;
 using System.Threading;
+using Robust.Shared.IoC;
 using Robust.Shared.Utility;
 
-namespace Robust.Client.ResourceManagement
+namespace Robust.Client.ResourceManagement;
+
+/// <summary>
+///     Base resource for the cache.
+/// </summary>
+public abstract class BaseResource : IDisposable
 {
     /// <summary>
-    ///     Base resource for the cache.
+    ///     Fallback resource path if this one does not exist.
     /// </summary>
-    public abstract class BaseResource : IDisposable
+    public virtual ResPath? Fallback => null;
+
+    /// <summary>
+    ///     Disposes this resource.
+    /// </summary>
+    public virtual void Dispose()
     {
-        /// <summary>
-        ///     Fallback resource path if this one does not exist.
-        /// </summary>
-        public virtual ResPath? Fallback => null;
+    }
 
-        /// <summary>
-        ///     Disposes this resource.
-        /// </summary>
-        public virtual void Dispose()
-        {
-        }
+    /// <summary>
+    ///     Deserializes the resource from the VFS.
+    /// </summary>
+    public abstract void Load(IDependencyCollection dependencies, ResPath path);
 
-        /// <summary>
-        ///     Deserializes the resource from the VFS.
-        /// </summary>
-        /// <param name="cache">ResourceCache this resource is being loaded into.</param>
-        /// <param name="path">Path of the resource requested on the VFS.</param>
-        public abstract void Load(IResourceCache cache, ResPath path);
+    public virtual void Reload(IDependencyCollection dependencies, ResPath path, CancellationToken ct = default)
+    {
 
-        public virtual void Reload(IResourceCache cache, ResPath path, CancellationToken ct = default)
-        {
-
-        }
     }
 }

Robust.Client/ResourceManagement/IResourceCache.cs

@@ -1,49 +1,51 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using Robust.Client.Graphics;
 using Robust.Shared.ContentPack;
 using Robust.Shared.Utility;
 
-namespace Robust.Client.ResourceManagement
+namespace Robust.Client.ResourceManagement;
+
+/// <summary>
+/// Handles caching of <see cref="BaseResource"/>
+/// </summary>
+public interface IResourceCache : IResourceManager
 {
-    public interface IResourceCache : IResourceManager
-    {
-        T GetResource<T>(string path, bool useFallback = true)
-            where T : BaseResource, new();
+    T GetResource<T>(string path, bool useFallback = true)
+        where T : BaseResource, new();
 
-        T GetResource<T>(ResPath path, bool useFallback = true)
-            where T : BaseResource, new();
+    T GetResource<T>(ResPath path, bool useFallback = true)
+        where T : BaseResource, new();
 
-        bool TryGetResource<T>(string path, [NotNullWhen(true)] out T? resource)
-            where T : BaseResource, new();
+    bool TryGetResource<T>(string path, [NotNullWhen(true)] out T? resource)
+        where T : BaseResource, new();
 
-        bool TryGetResource<T>(ResPath path, [NotNullWhen(true)] out T? resource)
-            where T : BaseResource, new();
+    bool TryGetResource<T>(ResPath path, [NotNullWhen(true)] out T? resource)
+        where T : BaseResource, new();
 
-        void ReloadResource<T>(string path)
-            where T : BaseResource, new();
+    void ReloadResource<T>(string path)
+        where T : BaseResource, new();
 
-        void ReloadResource<T>(ResPath path)
-            where T : BaseResource, new();
+    void ReloadResource<T>(ResPath path)
+        where T : BaseResource, new();
 
-        void CacheResource<T>(string path, T resource)
-            where T : BaseResource, new();
+    void CacheResource<T>(string path, T resource)
+        where T : BaseResource, new();
 
-        void CacheResource<T>(ResPath path, T resource)
-            where T : BaseResource, new();
+    void CacheResource<T>(ResPath path, T resource)
+        where T : BaseResource, new();
 
-        T GetFallback<T>()
-            where T : BaseResource, new();
+    T GetFallback<T>()
+        where T : BaseResource, new();
 
-        IEnumerable<KeyValuePair<ResPath, T>> GetAllResources<T>() where T : BaseResource, new();
+    IEnumerable<KeyValuePair<ResPath, T>> GetAllResources<T>() where T : BaseResource, new();
 
-        // Resource load callbacks so content can hook stuff like click maps.
-        event Action<TextureLoadedEventArgs> OnRawTextureLoaded;
-        event Action<RsiLoadedEventArgs> OnRsiLoaded;
-        
-        IClyde Clyde { get; }
-        IClydeAudio ClydeAudio { get; }
-        IFontManager FontManager { get; }
-    }
+    // Resource load callbacks so content can hook stuff like click maps.
+    event Action<TextureLoadedEventArgs> OnRawTextureLoaded;
+    event Action<RsiLoadedEventArgs> OnRsiLoaded;
+
+    IClyde Clyde { get; }
+    IFontManager FontManager { get; }
 }
+

Robust.Client/ResourceManagement/IResourceCacheInternal.cs

@@ -2,14 +2,14 @@
 using Robust.Shared.ContentPack;
 using Robust.Shared.Utility;
 
-namespace Robust.Client.ResourceManagement
-{
-    internal interface IResourceCacheInternal : IResourceCache, IResourceManagerInternal
-    {
-        void TextureLoaded(TextureLoadedEventArgs eventArgs);
-        void RsiLoaded(RsiLoadedEventArgs eventArgs);
+namespace Robust.Client.ResourceManagement;
 
-        void MountLoaderApi(IFileApi api, string apiPrefix, ResPath? prefix=null);
-        void PreloadTextures();
-    }
+/// <inheritdoc />
+internal interface IResourceCacheInternal : IResourceCache
+{
+    void TextureLoaded(TextureLoadedEventArgs eventArgs);
+    void RsiLoaded(RsiLoadedEventArgs eventArgs);
+    void PreloadTextures();
+
+    void MountLoaderApi(IResourceManager manager, IFileApi api, string apiPrefix, ResPath? prefix = null);
 }

Robust.Client/ResourceManagement/ResourceCache.LoaderApi.cs

@@ -9,6 +9,13 @@ namespace Robust.Client.ResourceManagement
 {
     internal partial class ResourceCache
     {
+        public void MountLoaderApi(IResourceManager manager, IFileApi api, string apiPrefix, ResPath? prefix = null)
+        {
+            prefix ??= ResPath.Root;
+            var root = new LoaderApiLoader(api, apiPrefix);
+            manager.AddRoot(prefix.Value, root);
+        }
+
         private sealed class LoaderApiLoader : IContentRoot
         {
             private readonly IFileApi _api;

Robust.Client/ResourceManagement/ResourceCache.Preload.cs

@@ -3,10 +3,13 @@ using System.Diagnostics;
 using System.Linq;
 using System.Threading.Tasks;
 using OpenToolkit.Graphics.OpenGL4;
+using Robust.Client.Audio;
 using Robust.Client.Graphics;
 using Robust.Client.Utility;
 using Robust.Shared;
+using Robust.Shared.Audio;
 using Robust.Shared.Configuration;
+using Robust.Shared.ContentPack;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
 using Robust.Shared.Maths;
@@ -19,7 +22,8 @@ namespace Robust.Client.ResourceManagement
     internal partial class ResourceCache
     {
         [field: Dependency] public IClyde Clyde { get; } = default!;
-        [field: Dependency] public IClydeAudio ClydeAudio { get; } = default!;
+        [field: Dependency] public IAudioInternal ClydeAudio { get; } = default!;
+        [Dependency] private readonly IResourceManager _manager = default!;
         [field: Dependency] public IFontManager FontManager { get; } = default!;
         [Dependency] private readonly ILogManager _logManager = default!;
         [Dependency] private readonly IConfigurationManager _configurationManager = default!;
@@ -44,7 +48,7 @@ namespace Robust.Client.ResourceManagement
             var sw = Stopwatch.StartNew();
             var resList = GetTypeDict<TextureResource>();
 
-            var texList = ContentFindFiles("/Textures/")
+            var texList = _manager.ContentFindFiles("/Textures/")
                 // Skip PNG files inside RSIs.
                 .Where(p => p.Extension == "png" && !p.ToString().Contains(".rsi/") && !resList.ContainsKey(p))
                 .Select(p => new TextureResource.LoadStepData {Path = p})
@@ -54,7 +58,7 @@ namespace Robust.Client.ResourceManagement
             {
                 try
                 {
-                    TextureResource.LoadPreTexture(this, data);
+                    TextureResource.LoadPreTexture(_manager, data);
                 }
                 catch (Exception e)
                 {
@@ -116,7 +120,7 @@ namespace Robust.Client.ResourceManagement
             var sw = Stopwatch.StartNew();
             var resList = GetTypeDict<RSIResource>();
 
-            var rsiList = ContentFindFiles("/Textures/")
+            var rsiList = _manager.ContentFindFiles("/Textures/")
                 .Where(p => p.ToString().EndsWith(".rsi/meta.json"))
                 .Select(c => c.Directory)
                 .Where(p => !resList.ContainsKey(p))
@@ -127,7 +131,7 @@ namespace Robust.Client.ResourceManagement
             {
                 try
                 {
-                    RSIResource.LoadPreTexture(this, data);
+                    RSIResource.LoadPreTexture(_manager, data);
                 }
                 catch (Exception e)
                 {

Robust.Client/ResourceManagement/ResourceCache.cs

@@ -1,221 +1,219 @@
-using Robust.Shared.ContentPack;
-using Robust.Shared.Log;
-using Robust.Shared.Utility;
-using System;
+using System;
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Runtime.CompilerServices;
-using Robust.LoaderApi;
+using Robust.Shared.ContentPack;
+using Robust.Shared.IoC;
+using Robust.Shared.Log;
+using Robust.Shared.Utility;
 
-namespace Robust.Client.ResourceManagement
+namespace Robust.Client.ResourceManagement;
+
+/// <summary>
+/// Handles caching of <see cref="BaseResource"/>
+/// </summary>
+internal sealed partial class ResourceCache : ResourceManager, IResourceCacheInternal, IDisposable
 {
-    internal sealed partial class ResourceCache : ResourceManager, IResourceCacheInternal, IDisposable
+    private readonly Dictionary<Type, Dictionary<ResPath, BaseResource>> _cachedResources =
+    new();
+
+    private readonly Dictionary<Type, BaseResource> _fallbacks = new();
+
+    public T GetResource<T>(string path, bool useFallback = true) where T : BaseResource, new()
     {
-        private readonly Dictionary<Type, Dictionary<ResPath, BaseResource>> CachedResources =
-            new();
+        return GetResource<T>(new ResPath(path), useFallback);
+    }
 
-        private readonly Dictionary<Type, BaseResource> _fallbacks = new();
-
-        public T GetResource<T>(string path, bool useFallback = true) where T : BaseResource, new()
+    public T GetResource<T>(ResPath path, bool useFallback = true) where T : BaseResource, new()
+    {
+        var cache = GetTypeDict<T>();
+        if (cache.TryGetValue(path, out var cached))
         {
-            return GetResource<T>(new ResPath(path), useFallback);
+            return (T) cached;
         }
 
-        public T GetResource<T>(ResPath path, bool useFallback = true) where T : BaseResource, new()
+        var resource = new T();
+        try
         {
-            var cache = GetTypeDict<T>();
-            if (cache.TryGetValue(path, out var cached))
-            {
-                return (T) cached;
-            }
-
-            var _resource = new T();
-            try
-            {
-                _resource.Load(this, path);
-                cache[path] = _resource;
-                return _resource;
-            }
-            catch (Exception e)
-            {
-                if (useFallback && _resource.Fallback != null)
-                {
-                    Logger.Error(
-                        $"Exception while loading resource {typeof(T)} at '{path}', resorting to fallback.\n{Environment.StackTrace}\n{e}");
-                    return GetResource<T>(_resource.Fallback.Value, false);
-                }
-                else
-                {
-                    Logger.Error(
-                        $"Exception while loading resource {typeof(T)} at '{path}', no fallback available\n{Environment.StackTrace}\n{e}");
-                    throw;
-                }
-            }
+            var dependencies = IoCManager.Instance!;
+            resource.Load(dependencies, path);
+            cache[path] = resource;
+            return resource;
         }
-
-        public bool TryGetResource<T>(string path, [NotNullWhen(true)] out T? resource) where T : BaseResource, new()
+        catch (Exception e)
         {
-            return TryGetResource(new ResPath(path), out resource);
-        }
-
-        public bool TryGetResource<T>(ResPath path, [NotNullWhen(true)] out T? resource) where T : BaseResource, new()
-        {
-            var cache = GetTypeDict<T>();
-            if (cache.TryGetValue(path, out var cached))
+            if (useFallback && resource.Fallback != null)
             {
-                resource = (T) cached;
-                return true;
+                Logger.Error(
+                    $"Exception while loading resource {typeof(T)} at '{path}', resorting to fallback.\n{Environment.StackTrace}\n{e}");
+                return GetResource<T>(resource.Fallback.Value, false);
             }
-
-            var _resource = new T();
-            try
+            else
             {
-                _resource.Load(this, path);
-                resource = _resource;
-                cache[path] = resource;
-                return true;
-            }
-            catch
-            {
-                resource = null;
-                return false;
-            }
-        }
-
-        public void ReloadResource<T>(string path) where T : BaseResource, new()
-        {
-            ReloadResource<T>(new ResPath(path));
-        }
-
-        public void ReloadResource<T>(ResPath path) where T : BaseResource, new()
-        {
-            var cache = GetTypeDict<T>();
-
-            if (!cache.TryGetValue(path, out var res))
-            {
-                return;
-            }
-
-            try
-            {
-                res.Reload(this, path);
-            }
-            catch (Exception e)
-            {
-                Logger.Error($"Exception while reloading resource {typeof(T)} at '{path}'\n{e}");
+                Logger.Error(
+                    $"Exception while loading resource {typeof(T)} at '{path}', no fallback available\n{Environment.StackTrace}\n{e}");
                 throw;
             }
         }
+    }
 
-        public bool HasResource<T>(string path) where T : BaseResource, new()
+    public bool TryGetResource<T>(string path, [NotNullWhen(true)] out T? resource) where T : BaseResource, new()
+    {
+        return TryGetResource(new ResPath(path), out resource);
+    }
+
+    public bool TryGetResource<T>(ResPath path, [NotNullWhen(true)] out T? resource) where T : BaseResource, new()
+    {
+        var cache = GetTypeDict<T>();
+        if (cache.TryGetValue(path, out var cached))
         {
-            return HasResource<T>(new ResPath(path));
+            resource = (T) cached;
+            return true;
         }
 
-        public bool HasResource<T>(ResPath path) where T : BaseResource, new()
+        var _resource = new T();
+        try
         {
-            return TryGetResource<T>(path, out var _);
+            var dependencies = IoCManager.Instance!;
+            _resource.Load(dependencies, path);
+            resource = _resource;
+            cache[path] = resource;
+            return true;
+        }
+        catch
+        {
+            resource = null;
+            return false;
+        }
+    }
+
+    public void ReloadResource<T>(string path) where T : BaseResource, new()
+    {
+        ReloadResource<T>(new ResPath(path));
+    }
+
+    public void ReloadResource<T>(ResPath path) where T : BaseResource, new()
+    {
+        var cache = GetTypeDict<T>();
+
+        if (!cache.TryGetValue(path, out var res))
+        {
+            return;
         }
 
-        public void CacheResource<T>(string path, T resource) where T : BaseResource, new()
+        try
         {
-            CacheResource(new ResPath(path), resource);
+            var dependencies = IoCManager.Instance!;
+            res.Reload(dependencies, path);
         }
-
-        public void CacheResource<T>(ResPath path, T resource) where T : BaseResource, new()
+        catch (Exception e)
         {
-            GetTypeDict<T>()[path] = resource;
+            Logger.Error($"Exception while reloading resource {typeof(T)} at '{path}'\n{e}");
+            throw;
         }
+    }
 
-        public T GetFallback<T>() where T : BaseResource, new()
+    public bool HasResource<T>(string path) where T : BaseResource, new()
+    {
+        return HasResource<T>(new ResPath(path));
+    }
+
+    public bool HasResource<T>(ResPath path) where T : BaseResource, new()
+    {
+        return TryGetResource<T>(path, out var _);
+    }
+
+    public void CacheResource<T>(string path, T resource) where T : BaseResource, new()
+    {
+        CacheResource(new ResPath(path), resource);
+    }
+
+    public void CacheResource<T>(ResPath path, T resource) where T : BaseResource, new()
+    {
+        GetTypeDict<T>()[path] = resource;
+    }
+
+    public T GetFallback<T>() where T : BaseResource, new()
+    {
+        if (_fallbacks.TryGetValue(typeof(T), out var fallback))
         {
-            if (_fallbacks.TryGetValue(typeof(T), out var fallback))
-            {
-                return (T) fallback;
-            }
-
-            var res = new T();
-            if (res.Fallback == null)
-            {
-                throw new InvalidOperationException($"Resource of type '{typeof(T)}' has no fallback.");
-            }
-
-            fallback = GetResource<T>(res.Fallback.Value, useFallback: false);
-            _fallbacks.Add(typeof(T), fallback);
             return (T) fallback;
         }
 
-        public IEnumerable<KeyValuePair<ResPath, T>> GetAllResources<T>() where T : BaseResource, new()
+        var res = new T();
+        if (res.Fallback == null)
         {
-            return GetTypeDict<T>().Select(p => new KeyValuePair<ResPath, T>(p.Key, (T) p.Value));
+            throw new InvalidOperationException($"Resource of type '{typeof(T)}' has no fallback.");
         }
 
-        public event Action<TextureLoadedEventArgs>? OnRawTextureLoaded;
-        public event Action<RsiLoadedEventArgs>? OnRsiLoaded;
+        fallback = GetResource<T>(res.Fallback.Value, useFallback: false);
+        _fallbacks.Add(typeof(T), fallback);
+        return (T) fallback;
+    }
 
-        #region IDisposable Members
+    public IEnumerable<KeyValuePair<ResPath, T>> GetAllResources<T>() where T : BaseResource, new()
+    {
+        return GetTypeDict<T>().Select(p => new KeyValuePair<ResPath, T>(p.Key, (T) p.Value));
+    }
 
-        private bool disposed = false;
+    public event Action<TextureLoadedEventArgs>? OnRawTextureLoaded;
+    public event Action<RsiLoadedEventArgs>? OnRsiLoaded;
 
-        public void Dispose()
+    #region IDisposable Members
+
+    private bool disposed = false;
+
+    public void Dispose()
+    {
+        Dispose(true);
+        GC.SuppressFinalize(this);
+    }
+
+    private void Dispose(bool disposing)
+    {
+        if (disposed)
         {
-            Dispose(true);
-            GC.SuppressFinalize(this);
+            return;
         }
 
-        private void Dispose(bool disposing)
+        if (disposing)
         {
-            if (disposed)
+            foreach (var res in _cachedResources.Values.SelectMany(dict => dict.Values))
             {
-                return;
+                res.Dispose();
             }
-
-            if (disposing)
-            {
-                foreach (var res in CachedResources.Values.SelectMany(dict => dict.Values))
-                {
-                    res.Dispose();
-                }
-            }
-
-            disposed = true;
         }
 
-        ~ResourceCache()
+        disposed = true;
+    }
+
+    ~ResourceCache()
+    {
+        Dispose(false);
+    }
+
+    #endregion IDisposable Members
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    protected Dictionary<ResPath, BaseResource> GetTypeDict<T>()
+    {
+        if (!_cachedResources.TryGetValue(typeof(T), out var ret))
         {
-            Dispose(false);
+            ret = new Dictionary<ResPath, BaseResource>();
+            _cachedResources.Add(typeof(T), ret);
         }
 
-        #endregion IDisposable Members
+        return ret;
+    }
 
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        private Dictionary<ResPath, BaseResource> GetTypeDict<T>()
-        {
-            if (!CachedResources.TryGetValue(typeof(T), out var ret))
-            {
-                ret = new Dictionary<ResPath, BaseResource>();
-                CachedResources.Add(typeof(T), ret);
-            }
+    public void TextureLoaded(TextureLoadedEventArgs eventArgs)
+    {
+        OnRawTextureLoaded?.Invoke(eventArgs);
+    }
 
-            return ret;
-        }
-
-        public void TextureLoaded(TextureLoadedEventArgs eventArgs)
-        {
-            OnRawTextureLoaded?.Invoke(eventArgs);
-        }
-
-        public void RsiLoaded(RsiLoadedEventArgs eventArgs)
-        {
-            OnRsiLoaded?.Invoke(eventArgs);
-        }
-
-        public void MountLoaderApi(IFileApi api, string apiPrefix, ResPath? prefix=null)
-        {
-            prefix ??= ResPath.Root;
-            var root = new LoaderApiLoader(api, apiPrefix);
-            AddRoot(prefix.Value, root);
-        }
+    public void RsiLoaded(RsiLoadedEventArgs eventArgs)
+    {
+        OnRsiLoaded?.Invoke(eventArgs);
     }
 }

Robust.Client/ResourceManagement/ResourceTypes/AudioResource.cs

@@ -1,43 +1,46 @@
-using System;
-using Robust.Client.Audio;
-using Robust.Shared.Utility;
+using System;
 using System.IO;
-using Robust.Client.Graphics;
+using Robust.Client.Audio;
+using Robust.Shared.Audio;
+using Robust.Shared.ContentPack;
 using Robust.Shared.IoC;
+using Robust.Shared.Utility;
 
-namespace Robust.Client.ResourceManagement
+namespace Robust.Client.ResourceManagement;
+
+public sealed class AudioResource : BaseResource
 {
-    public sealed class AudioResource : BaseResource
+    public AudioStream AudioStream { get; private set; } = default!;
+
+    public override void Load(IDependencyCollection dependencies, ResPath path)
     {
-        public AudioStream AudioStream { get; private set; } = default!;
+        var cache = dependencies.Resolve<IResourceManager>();
 
-        public override void Load(IResourceCache cache, ResPath path)
+        if (!cache.ContentFileExists(path))
         {
-            if (!cache.ContentFileExists(path))
-            {
-                throw new FileNotFoundException("Content file does not exist for audio sample.");
-            }
-
-            using (var fileStream = cache.ContentFileRead(path))
-            {
-                if (path.Extension == "ogg")
-                {
-                    AudioStream = cache.ClydeAudio.LoadAudioOggVorbis(fileStream, path.ToString());
-                }
-                else if (path.Extension == "wav")
-                {
-                    AudioStream = cache.ClydeAudio.LoadAudioWav(fileStream, path.ToString());
-                }
-                else
-                {
-                    throw new NotSupportedException("Unable to load audio files outside of ogg Vorbis or PCM wav");
-                }
-            }
+            throw new FileNotFoundException("Content file does not exist for audio sample.");
         }
 
-        public static implicit operator AudioStream(AudioResource res)
+        using (var fileStream = cache.ContentFileRead(path))
         {
-            return res.AudioStream;
+            var audioManager = dependencies.Resolve<IAudioInternal>();
+            if (path.Extension == "ogg")
+            {
+                AudioStream = audioManager.LoadAudioOggVorbis(fileStream, path.ToString());
+            }
+            else if (path.Extension == "wav")
+            {
+                AudioStream = audioManager.LoadAudioWav(fileStream, path.ToString());
+            }
+            else
+            {
+                throw new NotSupportedException("Unable to load audio files outside of ogg Vorbis or PCM wav");
+            }
         }
     }
+
+    public static implicit operator AudioStream(AudioResource res)
+    {
+        return res.AudioStream;
+    }
 }

Robust.Client/ResourceManagement/ResourceTypes/FontResource.cs

@@ -1,5 +1,6 @@
 using System.IO;
 using Robust.Client.Graphics;
+using Robust.Shared.ContentPack;
 using Robust.Shared.IoC;
 using Robust.Shared.Utility;
 
@@ -9,16 +10,17 @@ namespace Robust.Client.ResourceManagement
     {
         internal IFontFaceHandle FontFaceHandle { get; private set; } = default!;
 
-        public override void Load(IResourceCache cache, ResPath path)
+        public override void Load(IDependencyCollection dependencies, ResPath path)
         {
-            if (!cache.TryContentFileRead(path, out var stream))
+
+            if (!dependencies.Resolve<IResourceManager>().TryContentFileRead(path, out var stream))
             {
                 throw new FileNotFoundException("Content file does not exist for font");
             }
 
             using (stream)
             {
-                FontFaceHandle = ((IFontManagerInternal)cache.FontManager).Load(stream);
+                FontFaceHandle = dependencies.Resolve<IFontManagerInternal>().Load(stream);
             }
         }
 

Robust.Client/ResourceManagement/ResourceTypes/RSIResource.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using Robust.Client.Graphics;
 using Robust.Client.Utility;
+using Robust.Shared.ContentPack;
 using Robust.Shared.Graphics;
 using Robust.Shared.Graphics.RSI;
 using Robust.Shared.IoC;
@@ -34,26 +35,27 @@ namespace Robust.Client.ResourceManagement
         /// </summary>
         public const uint MAXIMUM_RSI_VERSION = RsiLoading.MAXIMUM_RSI_VERSION;
 
-        public override void Load(IResourceCache cache, ResPath path)
+        public override void Load(IDependencyCollection dependencies, ResPath path)
         {
             var loadStepData = new LoadStepData {Path = path};
-            LoadPreTexture(cache, loadStepData);
+            var manager = dependencies.Resolve<IResourceManager>();
+            LoadPreTexture(manager, loadStepData);
 
-            loadStepData.AtlasTexture = cache.Clyde.LoadTextureFromImage(
+            loadStepData.AtlasTexture = dependencies.Resolve<IClyde>().LoadTextureFromImage(
                 loadStepData.AtlasSheet,
                 loadStepData.Path.ToString());
 
             LoadPostTexture(loadStepData);
-            LoadFinish(cache, loadStepData);
+            LoadFinish(dependencies.Resolve<IResourceCacheInternal>(), loadStepData);
 
             loadStepData.AtlasSheet.Dispose();
         }
 
-        internal static void LoadPreTexture(IResourceCache cache, LoadStepData data)
+        internal static void LoadPreTexture(IResourceManager manager, LoadStepData data)
         {
             var manifestPath = data.Path / "meta.json";
             RsiLoading.RsiMetadata metadata;
-            using (var manifestFile = cache.ContentFileRead(manifestPath))
+            using (var manifestFile = manager.ContentFileRead(manifestPath))
             {
                 metadata = RsiLoading.LoadRsiMetadata(manifestFile);
             }
@@ -86,7 +88,7 @@ namespace Robust.Client.ResourceManagement
                 var stateObject = metadata.States[index];
                 // Load image from disk.
                 var texPath = data.Path / (stateObject.StateId + ".png");
-                using (var stream = cache.ContentFileRead(texPath))
+                using (var stream = manager.ContentFileRead(texPath))
                 {
                     reg.Src = Image.Load<Rgba32>(stream);
                 }
@@ -212,14 +214,10 @@ namespace Robust.Client.ResourceManagement
             }
         }
 
-        internal void LoadFinish(IResourceCache cache, LoadStepData data)
+        internal void LoadFinish(IResourceCacheInternal cache, LoadStepData data)
         {
             RSI = data.Rsi;
-
-            if (cache is IResourceCacheInternal cacheInternal)
-            {
-                cacheInternal.RsiLoaded(new RsiLoadedEventArgs(data.Path, this, data.AtlasSheet, data.CallbackOffsets));
-            }
+            cache.RsiLoaded(new RsiLoadedEventArgs(data.Path, this, data.AtlasSheet, data.CallbackOffsets));
         }
 
         /// <summary>

Robust.Client/ResourceManagement/ResourceTypes/ShaderSourceResource.cs

@@ -20,28 +20,31 @@ namespace Robust.Client.ResourceManagement
         [ViewVariables]
         internal ParsedShader ParsedShader { get; private set; } = default!;
 
-        public override void Load(IResourceCache cache, ResPath path)
+        public override void Load(IDependencyCollection dependencies, ResPath path)
         {
-            using (var stream = cache.ContentFileRead(path))
+            var manager = dependencies.Resolve<IResourceManager>();
+
+            using (var stream = manager.ContentFileRead(path))
             using (var reader = new StreamReader(stream, EncodingHelpers.UTF8))
             {
-                ParsedShader = ShaderParser.Parse(reader, cache);
+                ParsedShader = ShaderParser.Parse(reader, manager);
             }
 
-            ClydeHandle = ((IClydeInternal)cache.Clyde).LoadShader(ParsedShader, path.ToString());
+            ClydeHandle = dependencies.Resolve<IClydeInternal>().LoadShader(ParsedShader, path.ToString());
         }
 
-        public override void Reload(IResourceCache cache, ResPath path, CancellationToken ct = default)
+        public override void Reload(IDependencyCollection dependencies, ResPath path, CancellationToken ct = default)
         {
+            var manager = dependencies.Resolve<IResourceManager>();
             ct = ct != default ? ct : new CancellationTokenSource(30000).Token;
 
             for (;;)
             {
                 try
                 {
-                    using var stream = cache.ContentFileRead(path);
+                    using var stream = manager.ContentFileRead(path);
                     using var reader = new StreamReader(stream, EncodingHelpers.UTF8);
-                    ParsedShader = ShaderParser.Parse(reader, cache);
+                    ParsedShader = ShaderParser.Parse(reader, manager);
                     break;
                 }
                 catch (IOException ioe)
@@ -57,7 +60,7 @@ namespace Robust.Client.ResourceManagement
                 }
             }
 
-            ((IClydeInternal)cache.Clyde).ReloadShader(ClydeHandle, ParsedShader);
+            dependencies.Resolve<IClydeInternal>().ReloadShader(ClydeHandle, ParsedShader);
         }
     }
 }

Robust.Client/ResourceManagement/ResourceTypes/TextureResource.cs

@@ -1,6 +1,7 @@
 using System.IO;
 using System.Threading;
 using Robust.Client.Graphics;
+using Robust.Shared.ContentPack;
 using Robust.Shared.Graphics;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
@@ -19,7 +20,7 @@ namespace Robust.Client.ResourceManagement
 
         public Texture Texture => _texture;
 
-        public override void Load(IResourceCache cache, ResPath path)
+        public override void Load(IDependencyCollection dependencies, ResPath path)
         {
             if (path.Directory.Filename.EndsWith(".rsi"))
             {
@@ -31,12 +32,12 @@ namespace Robust.Client.ResourceManagement
 
             var data = new LoadStepData {Path = path};
 
-            LoadPreTexture(cache, data);
-            LoadTexture(cache.Clyde, data);
-            LoadFinish(cache, data);
+            LoadPreTexture(dependencies.Resolve<IResourceManager>(), data);
+            LoadTexture(dependencies.Resolve<IClyde>(), data);
+            LoadFinish(dependencies.Resolve<IResourceCache>(), data);
         }
 
-        internal static void LoadPreTexture(IResourceCache cache, LoadStepData data)
+        internal static void LoadPreTexture(IResourceManager cache, LoadStepData data)
         {
             using (var stream = cache.ContentFileRead(data.Path))
             {
@@ -63,7 +64,7 @@ namespace Robust.Client.ResourceManagement
             data.Image.Dispose();
         }
 
-        private static TextureLoadParameters? TryLoadTextureParameters(IResourceCache cache, ResPath path)
+        private static TextureLoadParameters? TryLoadTextureParameters(IResourceManager cache, ResPath path)
         {
             var metaPath = path.WithName(path.Filename + ".yml");
             if (cache.TryContentFileRead(metaPath, out var stream))
@@ -90,12 +91,11 @@ namespace Robust.Client.ResourceManagement
             return null;
         }
 
-        public override void Reload(IResourceCache cache, ResPath path, CancellationToken ct = default)
+        public override void Reload(IDependencyCollection dependencies, ResPath path, CancellationToken ct = default)
         {
-            var clyde = IoCManager.Resolve<IClyde>();
-
             var data = new LoadStepData {Path = path};
-            LoadPreTexture(cache, data);
+
+            LoadPreTexture(dependencies.Resolve<IResourceManager>(), data);
 
             if (data.Image.Width == Texture.Width && data.Image.Height == Texture.Height)
             {
@@ -106,7 +106,7 @@ namespace Robust.Client.ResourceManagement
             {
                 // Dimensions do not match, make new texture.
                 _texture.Dispose();
-                LoadTexture(clyde, data);
+                LoadTexture(dependencies.Resolve<IClyde>(), data);
                 _texture = data.Texture;
             }
 

Robust.Client/Robust.Client.csproj

@@ -16,12 +16,12 @@
     <PackageReference Include="SQLitePCLRaw.provider.sqlite3" Version="2.1.2" Condition="'$(UseSystemSqlite)' == 'True'" PrivateAssets="compile" />
     <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.1.2" Condition="'$(UseSystemSqlite)' != 'True'" PrivateAssets="compile" />
     <PackageReference Include="SpaceWizards.NFluidsynth" Version="0.1.1" PrivateAssets="compile" />
-    <PackageReference Include="NVorbis" Version="0.10.1" PrivateAssets="compile" />
     <PackageReference Include="SixLabors.ImageSharp" Version="2.1.3" />
     <PackageReference Include="OpenToolkit.Graphics" Version="4.0.0-pre9.1" PrivateAssets="compile" />
     <PackageReference Include="OpenTK.OpenAL" Version="4.7.5" PrivateAssets="compile" />
     <PackageReference Include="SpaceWizards.SharpFont" Version="1.0.1" PrivateAssets="compile" />
     <PackageReference Include="Robust.Natives" Version="0.1.1" />
+    <PackageReference Include="System.Numerics.Vectors" Version="4.4.0" />
     <PackageReference Include="TerraFX.Interop.Windows" Version="10.0.20348-rc2" PrivateAssets="compile" />
     <PackageReference Condition="'$(FullRelease)' != 'True'" Include="JetBrains.Profiler.Api" Version="1.2.0" PrivateAssets="compile" />
     <PackageReference Include="SpaceWizards.Sodium" Version="0.2.1" PrivateAssets="compile" />

Robust.Client/UserInterface/Controls/RichTextLabel.cs

@@ -20,6 +20,7 @@ namespace Robust.Client.UserInterface.Controls
         public RichTextLabel()
         {
             IoCManager.InjectDependencies(this);
+            VerticalAlignment = VAlignment.Center;
         }
 
         public void SetMessage(FormattedMessage message, Type[]? tagsAllowed = null, Color? defaultColor = null)

Robust.Client/UserInterface/CustomControls/DebugMonitorControls/DebugCoordsPanel.cs

@@ -70,6 +70,7 @@ namespace Robust.Client.UserInterface.CustomControls.DebugMonitorControls
                 return;
 
             var mapSystem = _entityManager.System<SharedMapSystem>();
+            var xformSystem = _entityManager.System<SharedTransformSystem>();
 
             if (_mapManager.TryFindGridAt(mouseWorldMap, out var mouseGridUid, out var mouseGrid))
             {
@@ -80,7 +81,7 @@ namespace Robust.Client.UserInterface.CustomControls.DebugMonitorControls
             {
                 mouseGridPos = new EntityCoordinates(_mapManager.GetMapEntityId(mouseWorldMap.MapId),
                     mouseWorldMap.Position);
-                tile = new TileRef(EntityUid.Invalid, mouseGridPos.ToVector2i(_entityManager, _mapManager), Tile.Empty);
+                tile = new TileRef(EntityUid.Invalid, mouseGridPos.ToVector2i(_entityManager, _mapManager, xformSystem), Tile.Empty);
             }
 
             var controlHovered = UserInterfaceManager.CurrentlyHovered;
@@ -90,35 +91,35 @@ Screen Size: {screenSize} (scale: {screenScale})
 Mouse Pos:
     Screen: {mouseScreenPos}
     {mouseWorldMap}
-    {mouseGridPos}
+    {_entityManager.GetNetCoordinates(mouseGridPos)}
     {tile}
     GUI: {controlHovered}");
 
-            _textBuilder.AppendLine("\nAttached Entity:");
-            var controlledEntity = _playerManager?.LocalPlayer?.ControlledEntity ?? EntityUid.Invalid;
+            _textBuilder.AppendLine("\nAttached NetEntity:");
+            var controlledEntity = _playerManager.LocalSession?.AttachedEntity ?? EntityUid.Invalid;
+
             if (controlledEntity == EntityUid.Invalid)
             {
-                _textBuilder.AppendLine("No attached entity.");
+                _textBuilder.AppendLine("No attached netentity.");
             }
             else
             {
                 var entityTransform = _entityManager.GetComponent<TransformComponent>(controlledEntity);
-                var playerWorldOffset = entityTransform.MapPosition;
+                var playerWorldOffset = xformSystem.GetMapCoordinates(entityTransform);
                 var playerScreen = _eyeManager.WorldToScreen(playerWorldOffset.Position);
 
                 var playerCoordinates = entityTransform.Coordinates;
-                var playerRotation = entityTransform.WorldRotation;
+                var playerRotation = xformSystem.GetWorldRotation(entityTransform);
                 var gridRotation = entityTransform.GridUid != null
-                    ? _entityManager.GetComponent<TransformComponent>(entityTransform.GridUid.Value)
-                    .WorldRotation
+                    ? xformSystem.GetWorldRotation(entityTransform.GridUid.Value)
                     : Angle.Zero;
 
                 _textBuilder.Append($@"    Screen: {playerScreen}
     {playerWorldOffset}
-    {playerCoordinates}
+    {_entityManager.GetNetCoordinates(playerCoordinates)}
     Rotation: {playerRotation.Degrees:F2}°
-    EntId: {controlledEntity}
-    GridUid: {entityTransform.GridUid}
+    NEntId: {_entityManager.GetNetEntity(controlledEntity)}
+    Grid NEntId: {_entityManager.GetNetEntity(entityTransform.GridUid)}
     Grid Rotation: {gridRotation.Degrees:F2}°");
             }
 

Robust.Client/UserInterface/Themes/UiTheme.cs

@@ -4,6 +4,7 @@ using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using Robust.Client.Graphics;
 using Robust.Client.ResourceManagement;
+using Robust.Shared.ContentPack;
 using Robust.Shared.Graphics;
 using Robust.Shared.IoC;
 using Robust.Shared.Log;
@@ -37,10 +38,11 @@ public sealed class UITheme : IPrototype
     public Dictionary<string, Color>? Colors { get; }
     public ResPath Path => _path == default ? new ResPath(DefaultPath+"/"+ID) : _path;
 
-    private void ValidateFilePath(IResourceCache resourceCache)
+    private void ValidateFilePath(IResourceManager manager)
     {
-        var foundFolders = resourceCache.ContentFindFiles(Path.ToRootedPath());
-        if (!foundFolders.Any()) throw new Exception("UITheme: "+ID+" not found in resources!");
+        var foundFolders = manager.ContentFindFiles(Path.ToRootedPath());
+        if (!foundFolders.Any())
+            throw new Exception("UITheme: "+ID+" not found in resources!");
     }
 
     public Texture ResolveTexture(string texturePath)

Robust.Client/UserInterface/UserInterfaceManager.Input.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Numerics;
 using Robust.Client.Graphics;
@@ -40,6 +41,7 @@ internal partial class UserInterfaceManager
     private bool _showingTooltip;
     private Control? _suppliedTooltip;
     private const float TooltipDelay = 0.25f;
+    private readonly Dictionary<BoundKeyFunction, Control> _focusedControls = new();
 
     private WindowRoot? _focusedRoot;
 
@@ -109,13 +111,13 @@ internal partial class UserInterfaceManager
             args.Handle();
         }
 
+        _focusedControls[args.Function] = control;
         OnKeyBindDown?.Invoke(control);
     }
 
     public void KeyBindUp(BoundKeyEventArgs args)
     {
-        var control = ControlFocused ?? KeyboardFocused ?? MouseGetControl(args.PointerLocation);
-        if (control == null)
+        if (!_focusedControls.TryGetValue(args.Function, out var control))
         {
             return;
         }
@@ -129,6 +131,7 @@ internal partial class UserInterfaceManager
         // Always mark this as handled.
         // The only case it should not be is if we do not have a control to click on,
         // in which case we never reach this.
+        _focusedControls.Remove(args.Function);
         args.Handle();
     }
 

Robust.Packaging/AssetProcessing/Passes/AssetPassAudioMetadata.cs

@@ -0,0 +1,83 @@
+using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.AudioLoading;
+using Robust.Shared.Serialization;
+using YamlDotNet.Core;
+using YamlDotNet.RepresentationModel;
+
+namespace Robust.Packaging.AssetProcessing.Passes;
+
+/// <summary>
+/// Strips out audio files and writes them to a metadata .yml
+/// Used for server packaging to avoid bundling entire audio files on the server.
+/// </summary>
+public sealed class AssetPassAudioMetadata : AssetPass
+{
+    private readonly List<AudioMetadataPrototype> _audioMetadata = new();
+    private readonly string _metadataPath;
+
+    public AssetPassAudioMetadata(string metadataPath = "Prototypes/_audio_metadata.yml")
+    {
+        _metadataPath = metadataPath;
+    }
+
+    protected override AssetFileAcceptResult AcceptFile(AssetFile file)
+    {
+        if (!AudioLoader.IsLoadableAudioFile(file.Path))
+            return AssetFileAcceptResult.Pass;
+
+        using var stream = file.Open();
+        var metadata = AudioLoader.LoadAudioMetadata(stream, file.Path);
+
+        lock (_audioMetadata)
+        {
+            _audioMetadata.Add(new AudioMetadataPrototype()
+            {
+                ID = "/" + file.Path,
+                Length = metadata.Length,
+            });
+        }
+
+        return AssetFileAcceptResult.Consumed;
+    }
+
+    [SuppressMessage("ReSharper", "InconsistentlySynchronizedField")]
+    protected override void AcceptFinished()
+    {
+        if (_audioMetadata.Count == 0)
+        {
+            Logger?.Debug("Have no audio metadata, not writing anything");
+            return;
+        }
+
+        Logger?.Debug("Writing audio metadata for {0} audio files", _audioMetadata.Count);
+
+        // ReSharper disable once InconsistentlySynchronizedField
+        var root = new YamlSequenceNode();
+        var document = new YamlDocument(root);
+
+        foreach (var prototype in _audioMetadata)
+        {
+            // TODO: I know but sermanager and please get me out of this hell.
+            var jaml = new YamlMappingNode
+            {
+                { "type", AudioMetadataPrototype.ProtoName },
+                { "id", new YamlScalarNode(prototype.ID) },
+                { "length", new YamlScalarNode(prototype.Length.TotalSeconds.ToString(CultureInfo.InvariantCulture)) }
+            };
+            root.Add(jaml);
+        }
+
+        RunJob(() =>
+        {
+            using var memory = new MemoryStream();
+            using var writer = new StreamWriter(memory);
+            var yamlStream = new YamlStream(document);
+            yamlStream.Save(new YamlNoDocEndDotsFix(new YamlMappingFix(new Emitter(writer))), false);
+            writer.Flush();
+            var result = new AssetFileMemory(_metadataPath, memory.ToArray());
+            SendFile(result);
+        });
+    }
+}

Robust.Packaging/AssetProcessing/Passes/AssetPassPackRsis.cs

@@ -61,7 +61,7 @@ internal sealed class AssetPassPackRsis : AssetPass
         foreach (var (key, dat) in _foundRsis)
         {
             if (dat.MetaJson == null)
-                return;
+                continue;
 
             RunJob(() =>
             {

Robust.Packaging/AssetProcessing/Passes/AssetPassPrefix.cs

@@ -0,0 +1,28 @@
+namespace Robust.Packaging.AssetProcessing.Passes;
+
+/// <summary>
+/// Appends a prefix to file paths of passed-through files.
+/// </summary>
+public sealed class AssetPassPrefix : AssetPass
+{
+    public string Prefix { get; set; }
+
+    public AssetPassPrefix(string prefix)
+    {
+        Prefix = prefix;
+    }
+
+    protected override AssetFileAcceptResult AcceptFile(AssetFile file)
+    {
+        var newPath = Prefix + file.Path;
+        var newFile = file switch
+        {
+            AssetFileDisk disk => (AssetFile) new AssetFileDisk(newPath, disk.DiskPath),
+            AssetFileMemory memory => new AssetFileMemory(newPath, memory.Memory),
+            _ => throw new ArgumentOutOfRangeException(nameof(file))
+        };
+
+        SendFile(newFile);
+        return AssetFileAcceptResult.Consumed;
+    }
+}

Robust.Packaging/Robust.Packaging.csproj

@@ -10,5 +10,9 @@
     <ProjectReference Include="..\Robust.Shared\Robust.Shared.csproj" />
   </ItemGroup>
 
+  <ItemGroup>
+    <PackageReference Include="NVorbis" Version="0.10.5" />
+  </ItemGroup>
+
   <Import Project="..\MSBuild\Robust.Properties.targets" />
 </Project>

Robust.Packaging/RobustClientAssetGraph.cs

@@ -21,11 +21,12 @@ public sealed class RobustClientAssetGraph
     /// </summary>
     public IReadOnlyCollection<AssetPass> AllPasses { get; }
 
-    public RobustClientAssetGraph()
+    /// <param name="parallel">Should inputs be run in parallel. Should only be turned off for debugging.</param>
+    public RobustClientAssetGraph(bool parallel = true)
     {
         // The code injecting the list of source files is assumed to be pretty single-threaded.
         // We use a parallelizing input to break out all the work on files coming in onto multiple threads.
-        Input = new AssetPassPipe { Name = "RobustClientAssetGraphInput", Parallelize = true };
+        Input = new AssetPassPipe { Name = "RobustClientAssetGraphInput", Parallelize = parallel };
         PresetPasses = new AssetPassPipe { Name = "RobustClientAssetGraphPresetPasses" };
         Output = new AssetPassPipe { Name = "RobustClientAssetGraphOutput", CheckDuplicates = true };
         NormalizeText = new AssetPassNormalizeText { Name = "RobustClientAssetGraphNormalizeText" };
@@ -40,7 +41,7 @@ public sealed class RobustClientAssetGraph
             Input,
             PresetPasses,
             Output,
-            NormalizeText
+            NormalizeText,
         };
     }
 }

Robust.Packaging/RobustClientPackaging.cs

@@ -4,9 +4,10 @@ namespace Robust.Packaging;
 
 public sealed class RobustClientPackaging
 {
-    public static IReadOnlySet<string> ClientIgnoresResources { get; } = new HashSet<string>
+    public static IReadOnlySet<string> ClientIgnoredResources { get; } = new HashSet<string>
     {
         "Maps",
+        "ConfigPresets",
         // Leaving this here for future archaeologists to ponder at.
         "emotes.xml",
         "Groups",
@@ -18,48 +19,8 @@ public sealed class RobustClientPackaging
         AssetPass pass,
         CancellationToken cancel = default)
     {
-        var ignoreSet = ClientIgnoresResources.Union(RobustSharedPackaging.SharedIgnoredResources).ToHashSet();
+        var ignoreSet = ClientIgnoredResources.Union(RobustSharedPackaging.SharedIgnoredResources).ToHashSet();
 
-        await RobustSharedPackaging.DoResourceCopy(Path.Combine(contentDir, "Resources"), pass, ignoreSet, cancel);
-    }
-
-    public static async Task WriteContentAssemblies(
-        AssetPass pass,
-        string contentDir,
-        string binDir,
-        IEnumerable<string> contentAssemblies,
-        CancellationToken cancel = default)
-    {
-        await WriteContentAssemblies("Assemblies", pass, contentDir, binDir, contentAssemblies, cancel);
-    }
-
-    public static Task WriteContentAssemblies(
-        string target,
-        AssetPass pass,
-        string contentDir,
-        string binDir,
-        IEnumerable<string> contentAssemblies,
-        CancellationToken cancel = default)
-    {
-        var files = new List<string>();
-
-        var sourceDir = Path.Combine(contentDir, "bin", binDir);
-
-        foreach (var asm in contentAssemblies)
-        {
-            files.Add($"{asm}.dll");
-
-            var pdbPath = $"{asm}.pdb";
-            if (File.Exists(Path.Combine(sourceDir, pdbPath)))
-                files.Add(pdbPath);
-        }
-
-        foreach (var f in files)
-        {
-            cancel.ThrowIfCancellationRequested();
-            pass.InjectFileFromDisk($"{target}/{f}", Path.Combine(sourceDir, f));
-        }
-
-        return Task.CompletedTask;
+        await RobustSharedPackaging.DoResourceCopy(Path.Combine(contentDir, "Resources"), pass, ignoreSet, cancel: cancel);
     }
 }

Robust.Packaging/RobustServerAssetGraph.cs

@@ -0,0 +1,129 @@
+using Robust.Packaging.AssetProcessing;
+using Robust.Packaging.AssetProcessing.Passes;
+
+namespace Robust.Packaging;
+
+/// <summary>
+/// Standard asset graph for packaging server files. Extend by wiring things up to <see cref="InputCore"/>, <see cref="InputResources"/>, and <see cref="Output"/>.
+/// </summary>
+/// <remarks>
+/// <para>
+/// This graph has two inputs: one for "core" server files such as the main engine executable, and another for resource files.
+/// </para>
+/// <para>
+/// If you want to add extra passes to run before preset passes, depend them on the relevant input pass, with a before of the relevant preset pass.
+/// </para>
+/// <para>
+/// See the following graph (Mermaid syntax) to understand this asset graph:
+/// </para>
+/// <code>
+/// flowchart LR
+///     InputCore              -->    PresetPassesCore
+///     PresetPassesCore       --1--> NormalizeTextCore
+///     NormalizeTextCore      -->    Output
+///     PresetPassesCore       --2--> Output
+///     InputResources         -->    PresetPassesResources
+///     PresetPassesResources  --1--> AudioMetadata
+///     PresetPassesResources  --2--> NormalizeTextResources
+///     PresetPassesResources  --3--> PrefixResources
+///     AudioMetadata          -->    PrefixResources
+///     NormalizeTextResources -->    PrefixResources
+///     PrefixResources        -->    Output
+/// </code>
+/// </remarks>
+public sealed class RobustServerAssetGraph
+{
+    public AssetPassPipe Output { get; }
+
+    /// <summary>
+    /// Input pass for core server files, such as <c>Robust.Server.exe</c>.
+    /// </summary>
+    /// <seealso cref="InputResources"/>
+    public AssetPassPipe InputCore { get; }
+
+    public AssetPassPipe PresetPassesCore { get; }
+
+    /// <summary>
+    /// Normalizes text files in core files.
+    /// </summary>
+    public AssetPassNormalizeText NormalizeTextCore { get; }
+
+    /// <summary>
+    /// Input pass for server resource files. Everything that will go into <c>Resources/</c>.
+    /// </summary>
+    /// <remarks>
+    /// Do not prefix file paths with <c>Resources/</c>, the asset pass will automatically remap them.
+    /// </remarks>
+    /// <seealso cref="InputCore"/>
+    public AssetPassPipe InputResources { get; }
+    public AssetPassPipe PresetPassesResources { get; }
+    public AssetPassAudioMetadata AudioMetadata { get; }
+
+    /// <summary>
+    /// Normalizes text files in resources.
+    /// </summary>
+    public AssetPassNormalizeText NormalizeTextResources { get; }
+
+    /// <summary>
+    /// Responsible for putting resources into the "<c>Resources/</c>" folder.
+    /// </summary>
+    public AssetPassPrefix PrefixResources { get; }
+
+    /// <summary>
+    /// Collection of all passes in this preset graph.
+    /// </summary>
+    public IReadOnlyCollection<AssetPass> AllPasses { get; }
+
+    /// <param name="parallel">Should inputs be run in parallel. Should only be turned off for debugging.</param>
+    public RobustServerAssetGraph(bool parallel = true)
+    {
+        Output = new AssetPassPipe { Name = "RobustServerAssetGraphOutput", CheckDuplicates = true };
+
+        //
+        // Core files
+        //
+
+        // The code injecting the list of source files is assumed to be pretty single-threaded.
+        // We use a parallelizing input to break out all the work on files coming in onto multiple threads.
+        InputCore = new AssetPassPipe { Name = "RobustServerAssetGraphInputCore", Parallelize = parallel };
+        PresetPassesCore = new AssetPassPipe { Name = "RobustServerAssetGraphPresetPassesCore" };
+        NormalizeTextCore = new AssetPassNormalizeText { Name = "RobustServerAssetGraphNormalizeTextCore" };
+
+        PresetPassesCore.AddDependency(InputCore);
+        NormalizeTextCore.AddDependency(PresetPassesCore).AddBefore(Output);
+        Output.AddDependency(PresetPassesCore);
+        Output.AddDependency(NormalizeTextCore);
+
+        //
+        // Resource files
+        //
+
+        // Ditto about parallelizing
+        InputResources = new AssetPassPipe { Name = "RobustServerAssetGraphInputResources", Parallelize = parallel };
+        PresetPassesResources = new AssetPassPipe { Name = "RobustServerAssetGraphPresetPassesResources" };
+        NormalizeTextResources = new AssetPassNormalizeText { Name = "RobustServerAssetGraphNormalizeTextResources" };
+        AudioMetadata = new AssetPassAudioMetadata { Name = "RobustServerAssetGraphAudioMetadata" };
+        PrefixResources = new AssetPassPrefix("Resources/") { Name = "RobustServerAssetGraphPrefixResources" };
+
+        PresetPassesResources.AddDependency(InputResources);
+        AudioMetadata.AddDependency(PresetPassesResources).AddBefore(NormalizeTextResources);
+        NormalizeTextResources.AddDependency(PresetPassesResources).AddBefore(PrefixResources);
+        PrefixResources.AddDependency(PresetPassesResources);
+        PrefixResources.AddDependency(AudioMetadata);
+        PrefixResources.AddDependency(NormalizeTextResources);
+        Output.AddDependency(PrefixResources);
+
+        AllPasses = new AssetPass[]
+        {
+            Output,
+            InputCore,
+            PresetPassesCore,
+            NormalizeTextCore,
+            InputResources,
+            PresetPassesResources,
+            NormalizeTextResources,
+            AudioMetadata,
+            PrefixResources,
+        };
+    }
+}

Robust.Packaging/RobustServerPackaging.cs

@@ -0,0 +1,33 @@
+using Robust.Packaging.AssetProcessing;
+
+namespace Robust.Packaging;
+
+public sealed class RobustServerPackaging
+{
+    public static IReadOnlySet<string> ServerIgnoresResources { get; } = new HashSet<string>
+    {
+        "Textures",
+        "Fonts",
+        "Shaders",
+    };
+
+    public static async Task WriteServerResources(
+        string contentDir,
+        AssetPass pass,
+        CancellationToken cancel = default)
+    {
+        var ignoreSet = ServerIgnoresResources.Union(RobustSharedPackaging.SharedIgnoredResources).ToHashSet();
+
+        await RobustSharedPackaging.DoResourceCopy(
+            Path.Combine(contentDir, "Resources"),
+            pass,
+            ignoreSet,
+            cancel: cancel);
+
+        await RobustSharedPackaging.DoResourceCopy(
+            Path.Combine("RobustToolbox", "Resources"),
+            pass,
+            ignoreSet,
+            cancel: cancel);
+    }
+}

Robust.Packaging/RobustSharedPackaging.cs

@@ -15,10 +15,53 @@ public sealed class RobustSharedPackaging
         ".DS_Store"
     };
 
+    // IDK what these are supposed to correspond to but targetDir is the target directory.
+    public static async Task WriteContentAssemblies(
+        AssetPass pass,
+        string contentDir,
+        string binDir,
+        IEnumerable<string> contentAssemblies,
+        string targetDir = "Assemblies",
+        CancellationToken cancel = default)
+    {
+        await WriteContentAssemblies(targetDir, pass, contentDir, binDir, contentAssemblies, cancel);
+    }
+
+    public static Task WriteContentAssemblies(
+        string target,
+        AssetPass pass,
+        string contentDir,
+        string binDir,
+        IEnumerable<string> contentAssemblies,
+        CancellationToken cancel = default)
+    {
+        var files = new List<string>();
+
+        var sourceDir = Path.Combine(contentDir, "bin", binDir);
+
+        foreach (var asm in contentAssemblies)
+        {
+            files.Add($"{asm}.dll");
+
+            var pdbPath = $"{asm}.pdb";
+            if (File.Exists(Path.Combine(sourceDir, pdbPath)))
+                files.Add(pdbPath);
+        }
+
+        foreach (var f in files)
+        {
+            cancel.ThrowIfCancellationRequested();
+            pass.InjectFileFromDisk($"{target}/{f}", Path.Combine(sourceDir, f));
+        }
+
+        return Task.CompletedTask;
+    }
+
     public static Task DoResourceCopy(
         string diskSource,
         AssetPass pass,
         IReadOnlySet<string> ignoreSet,
+        string targetDir = "",
         CancellationToken cancel = default)
     {
         foreach (var path in Directory.EnumerateFileSystemEntries(diskSource))
@@ -29,7 +72,7 @@ public sealed class RobustSharedPackaging
             if (ignoreSet.Contains(filename))
                 continue;
 
-            var targetPath = filename;
+            var targetPath = Path.Combine(targetDir, filename);
             if (Directory.Exists(path))
                 CopyDirIntoZip(path, targetPath, pass);
             else
@@ -44,11 +87,11 @@ public sealed class RobustSharedPackaging
         foreach (var file in Directory.EnumerateFiles(directory, "*.*", SearchOption.AllDirectories))
         {
             var relPath = Path.GetRelativePath(directory, file);
-            if (Path.DirectorySeparatorChar != '/')
-                relPath = relPath.Replace(Path.DirectorySeparatorChar, '/');
-
             var zipPath = $"{basePath}/{relPath}";
 
+            if (Path.DirectorySeparatorChar != '/')
+                zipPath = zipPath.Replace(Path.DirectorySeparatorChar, '/');
+
             // Console.WriteLine($"{directory}/{zipPath} -> /{zipPath}");
             pass.InjectFileFromDisk(zipPath, file);
         }

Robust.Server/Audio/AudioSystem.Effects.cs

@@ -0,0 +1,79 @@
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Components;
+using Robust.Shared.Audio.Effects;
+using Robust.Shared.Collections;
+using Robust.Shared.GameObjects;
+
+namespace Robust.Server.Audio;
+
+public sealed partial class AudioSystem
+{
+    protected override void InitializeEffect()
+    {
+        base.InitializeEffect();
+        SubscribeLocalEvent<AudioEffectComponent, ComponentAdd>(OnEffectAdd);
+        SubscribeLocalEvent<AudioAuxiliaryComponent, ComponentAdd>(OnAuxiliaryAdd);
+    }
+
+    private void ShutdownEffect()
+    {
+    }
+
+    /// <summary>
+    /// Reloads all <see cref="AudioPresetPrototype"/> entities.
+    /// </summary>
+    public void ReloadPresets()
+    {
+        var query = AllEntityQuery<AudioPresetComponent>();
+        var toDelete = new ValueList<EntityUid>();
+
+        while (query.MoveNext(out var uid, out _))
+        {
+            toDelete.Add(uid);
+        }
+
+        foreach (var ent in toDelete)
+        {
+            Del(ent);
+        }
+
+        foreach (var proto in ProtoMan.EnumeratePrototypes<AudioPresetPrototype>())
+        {
+            if (!proto.CreateAuxiliary)
+                continue;
+
+            var effect = CreateEffect();
+            var aux = CreateAuxiliary();
+            SetEffectPreset(effect.Entity, effect.Component, proto);
+            SetEffect(aux.Entity, aux.Component, effect.Entity);
+            var preset = AddComp<AudioPresetComponent>(aux.Entity);
+            _auxiliaries.Remove(preset.Preset);
+            preset.Preset = proto.ID;
+            _auxiliaries[preset.Preset] = aux.Entity;
+        }
+    }
+
+    private void OnEffectAdd(EntityUid uid, AudioEffectComponent component, ComponentAdd args)
+    {
+        component.Effect = new DummyAudioEffect();
+    }
+
+    private void OnAuxiliaryAdd(EntityUid uid, AudioAuxiliaryComponent component, ComponentAdd args)
+    {
+        component.Auxiliary = new DummyAuxiliaryAudio();
+    }
+
+    public override (EntityUid Entity, AudioAuxiliaryComponent Component) CreateAuxiliary()
+    {
+        var (ent, comp) = base.CreateAuxiliary();
+        _pvs.AddGlobalOverride(GetNetEntity(ent));
+        return (ent, comp);
+    }
+
+    public override (EntityUid Entity, AudioEffectComponent Component) CreateEffect()
+    {
+        var (ent, comp) = base.CreateEffect();
+        _pvs.AddGlobalOverride(GetNetEntity(ent));
+        return (ent, comp);
+    }
+}

Robust.Server/Audio/AudioSystem.cs

@@ -0,0 +1,223 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Numerics;
+using Robust.Server.GameObjects;
+using Robust.Server.GameStates;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.AudioLoading;
+using Robust.Shared.Audio.Components;
+using Robust.Shared.Audio.Sources;
+using Robust.Shared.Audio.Systems;
+using Robust.Shared.ContentPack;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Player;
+using Robust.Shared.Utility;
+
+namespace Robust.Server.Audio;
+
+public sealed partial class AudioSystem : SharedAudioSystem
+{
+    [Dependency] private readonly PvsOverrideSystem _pvs = default!;
+    [Dependency] private readonly IResourceManager _resourceManager = default!;
+
+    private readonly Dictionary<string, TimeSpan> _cachedAudioLengths = new();
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<AudioComponent, ComponentStartup>(OnAudioStartup);
+    }
+
+    public override void Shutdown()
+    {
+        base.Shutdown();
+        ShutdownEffect();
+    }
+
+    private void OnAudioStartup(EntityUid uid, AudioComponent component, ComponentStartup args)
+    {
+        component.Source = new DummyAudioSource();
+    }
+
+    private void AddAudioFilter(EntityUid uid, AudioComponent component, Filter filter)
+    {
+        var count = filter.Count;
+
+        if (count == 0)
+            return;
+
+        var nent = GetNetEntity(uid);
+        _pvs.AddSessionOverrides(nent, filter);
+
+        var ents = new HashSet<EntityUid>(count);
+
+        foreach (var session in filter.Recipients)
+        {
+            var ent = session.AttachedEntity;
+
+            if (ent == null)
+                continue;
+
+            ents.Add(ent.Value);
+        }
+
+        DebugTools.Assert(component.IncludedEntities == null);
+        component.IncludedEntities = ents;
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayGlobal(string filename, Filter playerFilter, bool recordReplay, AudioParams? audioParams = null)
+    {
+        var entity = Spawn("Audio", MapCoordinates.Nullspace);
+        var audio = SetupAudio(entity, filename, audioParams);
+        AddAudioFilter(entity, audio, playerFilter);
+        audio.Global = true;
+        return (entity, audio);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayEntity(string filename, Filter playerFilter, EntityUid uid, bool recordReplay, AudioParams? audioParams = null)
+    {
+        if (!Exists(uid))
+            return null;
+
+        var entity = Spawn("Audio", new EntityCoordinates(uid, Vector2.Zero));
+        var audio = SetupAudio(entity, filename, audioParams);
+        AddAudioFilter(entity, audio, playerFilter);
+
+        return (entity, audio);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayPvs(string filename, EntityUid uid, AudioParams? audioParams = null)
+    {
+        if (!Exists(uid))
+            return null;
+
+        var entity = Spawn("Audio", new EntityCoordinates(uid, Vector2.Zero));
+        var audio = SetupAudio(entity, filename, audioParams);
+
+        return (entity, audio);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayStatic(string filename, Filter playerFilter, EntityCoordinates coordinates, bool recordReplay, AudioParams? audioParams = null)
+    {
+        if (!coordinates.IsValid(EntityManager))
+            return null;
+
+        var entity = Spawn("Audio", coordinates);
+        var audio = SetupAudio(entity, filename, audioParams);
+        AddAudioFilter(entity, audio, playerFilter);
+
+        return (entity, audio);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayPvs(string filename, EntityCoordinates coordinates,
+        AudioParams? audioParams = null)
+    {
+        if (!coordinates.IsValid(EntityManager))
+            return null;
+
+        var entity = Spawn("Audio", coordinates);
+        var audio = SetupAudio(entity, filename, audioParams);
+
+        return (entity, audio);
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayPredicted(SoundSpecifier? sound, EntityUid source, EntityUid? user, AudioParams? audioParams = null)
+    {
+        if (sound == null)
+            return null;
+
+        var audio = PlayPvs(GetSound(sound), source, audioParams ?? sound.Params);
+
+        if (audio == null)
+            return null;
+
+        audio.Value.Component.ExcludedEntity = user;
+        return audio;
+    }
+
+    /// <inheritdoc />
+    public override (EntityUid Entity, AudioComponent Component)? PlayPredicted(SoundSpecifier? sound, EntityCoordinates coordinates, EntityUid? user, AudioParams? audioParams = null)
+    {
+        if (sound == null)
+            return null;
+
+        var audio = PlayPvs(GetSound(sound), coordinates, audioParams ?? sound.Params);
+
+        if (audio == null)
+            return null;
+
+        audio.Value.Component.ExcludedEntity = user;
+        return audio;
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayGlobal(string filename, ICommonSession recipient, AudioParams? audioParams = null)
+    {
+        return PlayGlobal(filename, Filter.SinglePlayer(recipient), false, audioParams);
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayGlobal(string filename, EntityUid recipient, AudioParams? audioParams = null)
+    {
+        if (TryComp(recipient, out ActorComponent? actor))
+            return PlayGlobal(filename, actor.PlayerSession, audioParams);
+
+        return null;
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayEntity(string filename, ICommonSession recipient, EntityUid uid, AudioParams? audioParams = null)
+    {
+        return PlayEntity(filename, Filter.SinglePlayer(recipient), uid, false, audioParams);
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayEntity(string filename, EntityUid recipient, EntityUid uid, AudioParams? audioParams = null)
+    {
+        if (TryComp(recipient, out ActorComponent? actor))
+            return PlayEntity(filename, actor.PlayerSession, uid, audioParams);
+
+        return null;
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayStatic(string filename, ICommonSession recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
+    {
+        return PlayStatic(filename, Filter.SinglePlayer(recipient), coordinates, false, audioParams);
+    }
+
+    public override (EntityUid Entity, AudioComponent Component)? PlayStatic(string filename, EntityUid recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
+    {
+        if (TryComp(recipient, out ActorComponent? actor))
+            return PlayStatic(filename, actor.PlayerSession, coordinates, audioParams);
+
+        return null;
+    }
+
+    protected override TimeSpan GetAudioLengthImpl(string filename)
+    {
+        // Check shipped metadata from packaging.
+        if (ProtoMan.TryIndex(filename, out AudioMetadataPrototype? metadata))
+            return metadata.Length;
+
+        // Try loading audio files directly.
+        // This is necessary in development and environments,
+        // and when working with audio files uploaded dynamically at runtime.
+        if (_cachedAudioLengths.TryGetValue(filename, out var length))
+            return length;
+
+        if (!_resourceManager.TryContentFileRead(filename, out var stream))
+            throw new FileNotFoundException($"Unable to find metadata for audio file {filename}");
+
+        using (stream)
+        {
+            var loadedMetadata = AudioLoader.LoadAudioMetadata(stream, filename);
+            _cachedAudioLengths.Add(filename, loadedMetadata.Length);
+            return loadedMetadata.Length;
+        }
+    }
+}

Robust.Server/BaseServer.cs

@@ -1,6 +1,7 @@
 using System;
 using System.IO;
 using System.Linq;
+using System.Net.Sockets;
 using System.Threading;
 using Prometheus;
 using Robust.Server.Console;
@@ -204,8 +205,6 @@ namespace Robust.Server
 
             ProfileOptSetup.Setup(_config);
 
-            _parallelMgr.Initialize();
-
             //Sets up Logging
             _logHandlerFactory = logHandlerFactory;
 
@@ -268,6 +267,7 @@ namespace Robust.Server
 
             // Has to be done early because this guy's in charge of the main thread Synchronization Context.
             _taskManager.Initialize();
+            _parallelMgr.Initialize();
 
             LoadSettings();
 
@@ -279,12 +279,15 @@ namespace Robust.Server
                 _network.Initialize(true);
                 _network.StartServer();
             }
-            catch (Exception e)
+            catch (SocketException e) when (e.SocketErrorCode == SocketError.AddressAlreadyInUse)
             {
                 var port = _network.Port;
-                _logger.Fatal(
-                    "Unable to setup networking manager. Check port {0} is not already in use and that all binding addresses are correct!\n{1}",
-                    port, e);
+                _logger.Fatal("Unable to setup networking manager. Make sure that you aren't running the server twice and that port {0} is not in use by another application.\n{1}", port, e);
+                return true;
+            }
+            catch (Exception e)
+            {
+                _logger.Fatal("Unable to setup networking manager!\n{0}", e);
                 return true;
             }
 
@@ -660,10 +663,14 @@ namespace Robust.Server
             {
                 // Write down exception log
                 var logPath = _config.GetCVar(CVars.LogPath);
-                var relPath = PathHelpers.ExecutableRelativeFile(logPath);
-                Directory.CreateDirectory(relPath);
-                var pathToWrite = Path.Combine(relPath,
+                if (!Path.IsPathRooted(logPath))
+                {
+                    logPath = PathHelpers.ExecutableRelativeFile(logPath);
+                }
+
+                var pathToWrite = Path.Combine(logPath,
                     "Runtime-" + DateTime.Now.ToString("yyyy-MM-dd-THH-mm-ss") + ".txt");
+                Directory.CreateDirectory(logPath);
                 File.WriteAllText(pathToWrite, _runtimeLog.Display(), EncodingHelpers.UTF8);
             }
 

Robust.Server/GameObjects/EntitySystems/ActorSystem.cs

@@ -1,189 +0,0 @@
-using System.Diagnostics.CodeAnalysis;
-using JetBrains.Annotations;
-using Robust.Server.Player;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
-using Robust.Shared.Network;
-using Robust.Shared.Player;
-using Robust.Shared.Utility;
-
-namespace Robust.Server.GameObjects
-{
-    /// <summary>
-    ///     System that handles players being attached/detached from entities.
-    /// </summary>
-    [UsedImplicitly]
-    public sealed class ActorSystem : EntitySystem
-    {
-        [Dependency] private readonly IPlayerManager _playerManager = default!;
-
-        public override void Initialize()
-        {
-            base.Initialize();
-
-            SubscribeLocalEvent<ActorComponent, ComponentShutdown>(OnActorShutdown);
-        }
-
-        /// <summary>
-        ///     Attaches a player session to an entity, optionally kicking any sessions already attached to it.
-        /// </summary>
-        /// <param name="uid">The entity to attach the player to</param>
-        /// <param name="player">The player to attach to the entity</param>
-        /// <param name="force">Whether to kick any existing players from the entity</param>
-        /// <returns>Whether the attach succeeded, or not.</returns>
-        public bool Attach(EntityUid? uid, ICommonSession player, bool force = false)
-        {
-            return Attach(uid, player, false, out _);
-        }
-
-        /// <summary>
-        ///     Attaches a player session to an entity, optionally kicking any sessions already attached to it.
-        /// </summary>
-        /// <param name="entity">The entity to attach the player to</param>
-        /// <param name="player">The player to attach to the entity</param>
-        /// <param name="force">Whether to kick any existing players from the entity</param>
-        /// <param name="forceKicked">The player that was forcefully kicked, or null.</param>
-        /// <returns>Whether the attach succeeded, or not.</returns>
-        public bool Attach(EntityUid? entity, ICommonSession player, bool force, out ICommonSession? forceKicked)
-        {
-            // Null by default.
-            forceKicked = null;
-
-            if (player.AttachedEntity == entity)
-            {
-                DebugTools.Assert(entity == null || HasComp<ActorComponent>(entity));
-                return true;
-            }
-
-            if (entity is not { } uid)
-                return Detach(player);
-
-            // Cannot attach to a deleted, nonexisting or terminating entity.
-            if (TerminatingOrDeleted(uid))
-                return false;
-
-            // Check if there was a player attached to the entity already...
-            if (TryComp(uid, out ActorComponent? actor))
-            {
-                // If we're not forcing the attach, this fails.
-                if (!force)
-                    return false;
-
-                // Set the event's force-kicked session before detaching it.
-                forceKicked = actor.PlayerSession;
-                RemComp(uid, actor);
-                DebugTools.AssertNull(forceKicked.AttachedEntity);
-            }
-
-            // Detach from the currently attached entity.
-            Detach(player);
-
-            // We add the actor component.
-            actor = EntityManager.AddComponent<ActorComponent>(uid);
-            EntityManager.EnsureComponent<EyeComponent>(uid);
-            actor.PlayerSession = player;
-            _playerManager.SetAttachedEntity(player, uid);
-            DebugTools.Assert(player.AttachedEntity == entity);
-
-            // The player is fully attached now, raise an event!
-            RaiseLocalEvent(uid, new PlayerAttachedEvent(uid, player, forceKicked), true);
-            return true;
-        }
-
-        /// <summary>
-        ///     Detaches an attached session from the entity, if any.
-        /// </summary>
-        /// <param name="entity">The entity player sessions will be detached from.</param>
-        /// <returns>Whether any player session was detached.</returns>
-        public bool Detach(EntityUid uid, ActorComponent? actor = null)
-        {
-            if (!Resolve(uid, ref actor, false))
-                return false;
-
-            RemComp(uid, actor);
-            return true;
-        }
-
-        /// <summary>
-        ///     Detaches this player from its attached entity, if any.
-        /// </summary>
-        /// <param name="player">The player session that will be detached from any attached entities.</param>
-        /// <returns>Whether the player is now detached from any entities.
-        /// This returns true if the player wasn't attached to any entity.</returns>
-        public bool Detach(ICommonSession player, ActorComponent? actor = null)
-        {
-            var uid = player.AttachedEntity;
-            if (uid == null)
-                return true;
-
-            if (!Resolve(uid.Value, ref actor, false))
-            {
-                Log.Error($"Player {player} was attached to a deleted entity?");
-                ((CommonSession) player).AttachedEntity = null;
-                return true;
-            }
-
-            RemComp(uid.Value, actor);
-            DebugTools.AssertNull(player.AttachedEntity);
-            return false;
-        }
-
-        private void OnActorShutdown(EntityUid entity, ActorComponent component, ComponentShutdown args)
-        {
-            _playerManager.SetAttachedEntity(component.PlayerSession, null);
-
-            // The player is fully detached now that the component has shut down.
-            RaiseLocalEvent(entity, new PlayerDetachedEvent(entity, component.PlayerSession), true);
-        }
-
-        public bool TryGetActorFromUserId(NetUserId? userId, [NotNullWhen(true)] out ICommonSession? actor, out EntityUid? actorEntity)
-        {
-            actor = null;
-            actorEntity = null;
-            if (userId != null)
-            {
-                if (!_playerManager.TryGetSessionById(userId.Value, out actor))
-                    return false;
-                actorEntity = actor.AttachedEntity;
-            }
-
-            return actor != null;
-        }
-    }
-
-    /// <summary>
-    ///     Event for when a player has been attached to an entity.
-    /// </summary>
-    public sealed class PlayerAttachedEvent : EntityEventArgs
-    {
-        public EntityUid Entity { get; }
-        public ICommonSession Player { get; }
-
-        /// <summary>
-        ///     The player session that was forcefully kicked from the entity, if any.
-        /// </summary>
-        public ICommonSession? Kicked { get; }
-
-        public PlayerAttachedEvent(EntityUid entity, ICommonSession player, ICommonSession? kicked = null)
-        {
-            Entity = entity;
-            Player = player;
-            Kicked = kicked;
-        }
-    }
-
-    /// <summary>
-    ///     Event for when a player has been detached from an entity.
-    /// </summary>
-    public sealed class PlayerDetachedEvent : EntityEventArgs
-    {
-        public EntityUid Entity { get; }
-        public ICommonSession Player { get; }
-
-        public PlayerDetachedEvent(EntityUid entity, ICommonSession player)
-        {
-            Entity = entity;
-            Player = player;
-        }
-    }
-}

Robust.Server/GameObjects/EntitySystems/AudioSystem.cs

@@ -1,176 +0,0 @@
-using System.Collections.Generic;
-using System.Linq;
-using JetBrains.Annotations;
-using Robust.Shared.Audio;
-using Robust.Shared.GameObjects;
-using Robust.Shared.IoC;
-using Robust.Shared.Map;
-using Robust.Shared.Player;
-
-namespace Robust.Server.GameObjects;
-[UsedImplicitly]
-public sealed class AudioSystem : SharedAudioSystem
-{
-    [Dependency] private readonly TransformSystem _transform = default!;
-
-
-    private uint _streamIndex;
-
-    private sealed class AudioSourceServer : IPlayingAudioStream
-    {
-        private readonly uint _id;
-        private readonly AudioSystem _audioSystem;
-        private readonly IEnumerable<ICommonSession>? _sessions;
-
-        internal AudioSourceServer(AudioSystem parent, uint identifier, IEnumerable<ICommonSession>? sessions = null)
-        {
-            _audioSystem = parent;
-            _id = identifier;
-            _sessions = sessions;
-        }
-        public void Stop()
-        {
-            _audioSystem.InternalStop(_id, _sessions);
-        }
-    }
-
-    private void InternalStop(uint id, IEnumerable<ICommonSession>? sessions = null)
-    {
-        var msg = new StopAudioMessageClient
-        {
-            Identifier = id
-        };
-
-        if (sessions == null)
-            RaiseNetworkEvent(msg);
-        else
-        {
-            foreach (var session in sessions)
-            {
-                RaiseNetworkEvent(msg, session.ConnectedClient);
-            }
-        }
-    }
-
-    private uint CacheIdentifier()
-    {
-        return unchecked(_streamIndex++);
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayGlobal(string filename, Filter playerFilter, bool recordReplay, AudioParams? audioParams = null)
-    {
-        var id = CacheIdentifier();
-        var msg = new PlayAudioGlobalMessage
-        {
-            FileName = filename,
-            AudioParams = audioParams ?? AudioParams.Default,
-            Identifier = id
-        };
-
-        RaiseNetworkEvent(msg, playerFilter, recordReplay);
-
-        return new AudioSourceServer(this, id, playerFilter.Recipients.ToArray());
-    }
-
-    public override IPlayingAudioStream? Play(string filename, Filter playerFilter, EntityUid uid, bool recordReplay, AudioParams? audioParams = null)
-    {
-        if(!EntityManager.TryGetComponent<TransformComponent>(uid, out var transform))
-            return null;
-
-        var id = CacheIdentifier();
-
-        var fallbackCoordinates = GetFallbackCoordinates(transform.MapPosition);
-
-        var msg = new PlayAudioEntityMessage
-        {
-            FileName = filename,
-            Coordinates = GetNetCoordinates(transform.Coordinates),
-            FallbackCoordinates = GetNetCoordinates(fallbackCoordinates),
-            NetEntity = GetNetEntity(uid),
-            AudioParams = audioParams ?? AudioParams.Default,
-            Identifier = id,
-        };
-
-        RaiseNetworkEvent(msg, playerFilter, recordReplay);
-
-        return new AudioSourceServer(this, id, playerFilter.Recipients.ToArray());
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? Play(string filename, Filter playerFilter, EntityCoordinates coordinates, bool recordReplay, AudioParams? audioParams = null)
-    {
-        var id = CacheIdentifier();
-
-        var fallbackCoordinates = GetFallbackCoordinates(coordinates.ToMap(EntityManager, _transform));
-
-        var msg = new PlayAudioPositionalMessage
-        {
-            FileName = filename,
-            Coordinates = GetNetCoordinates(coordinates),
-            FallbackCoordinates = GetNetCoordinates(fallbackCoordinates),
-            AudioParams = audioParams ?? AudioParams.Default,
-            Identifier = id
-        };
-
-        RaiseNetworkEvent(msg, playerFilter, recordReplay);
-
-        return new AudioSourceServer(this, id, playerFilter.Recipients.ToArray());
-    }
-
-    /// <inheritdoc />
-    public override IPlayingAudioStream? PlayPredicted(SoundSpecifier? sound, EntityUid source, EntityUid? user, AudioParams? audioParams = null)
-    {
-        if (sound == null)
-            return null;
-
-        var filter = Filter.Pvs(source, entityManager: EntityManager, playerManager: PlayerManager, cfgManager: CfgManager).RemoveWhereAttachedEntity(e => e == user);
-        return Play(sound, filter, source, true, audioParams);
-    }
-
-    public override IPlayingAudioStream? PlayPredicted(SoundSpecifier? sound, EntityCoordinates coordinates, EntityUid? user,
-        AudioParams? audioParams = null)
-    {
-        if (sound == null)
-            return null;
-
-        var filter = Filter.Pvs(coordinates, entityMan: EntityManager, playerMan: PlayerManager).RemoveWhereAttachedEntity(e => e == user);
-        return Play(sound, filter, coordinates, true, audioParams);
-    }
-
-    public override IPlayingAudioStream? PlayGlobal(string filename, ICommonSession recipient, AudioParams? audioParams = null)
-    {
-        return PlayGlobal(filename, Filter.SinglePlayer(recipient), false, audioParams);
-    }
-
-    public override IPlayingAudioStream? PlayGlobal(string filename, EntityUid recipient, AudioParams? audioParams = null)
-    {
-        if (TryComp(recipient, out ActorComponent? actor))
-            return PlayGlobal(filename, actor.PlayerSession, audioParams);
-        return null;
-    }
-
-    public override IPlayingAudioStream? PlayEntity(string filename, ICommonSession recipient, EntityUid uid, AudioParams? audioParams = null)
-    {
-        return Play(filename, Filter.SinglePlayer(recipient), uid, false, audioParams);
-    }
-
-    public override IPlayingAudioStream? PlayEntity(string filename, EntityUid recipient, EntityUid uid, AudioParams? audioParams = null)
-    {
-        if (TryComp(recipient, out ActorComponent? actor))
-            return PlayEntity(filename, actor.PlayerSession, uid, audioParams);
-        return null;
-    }
-
-    public override IPlayingAudioStream? PlayStatic(string filename, ICommonSession recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
-    {
-        return Play(filename, Filter.SinglePlayer(recipient), coordinates, false, audioParams);
-    }
-
-    public override IPlayingAudioStream? PlayStatic(string filename, EntityUid recipient, EntityCoordinates coordinates, AudioParams? audioParams = null)
-    {
-        if (TryComp(recipient, out ActorComponent? actor))
-            return PlayStatic(filename, actor.PlayerSession, coordinates, audioParams);
-        return null;
-    }
-}

Robust.Server/GameObjects/EntitySystems/EyeSystem.cs

@@ -1,5 +1,4 @@
 using Robust.Shared.GameObjects;
-using Robust.Shared.GameStates;
 
 namespace Robust.Server.GameObjects;
 

Robust.Server/GameObjects/EntitySystems/MapLoaderSystem.cs

@@ -290,6 +290,9 @@ public sealed class MapLoaderSystem : EntitySystem
 
         ReadGrids(data);
 
+        // grids prior to engine v175 might've been serialized with empty chunks which now throw debug asserts.
+        RemoveEmptyChunks(data);
+
         // Then, go hierarchically in order and do the entity things.
         StartupEntities(data);
 
@@ -305,6 +308,25 @@ public sealed class MapLoaderSystem : EntitySystem
         return true;
     }
 
+    private void RemoveEmptyChunks(MapData data)
+    {
+        var gridQuery = _serverEntityManager.GetEntityQuery<MapGridComponent>();
+        foreach (var uid in data.EntitiesToDeserialize.Keys)
+        {
+            if (!gridQuery.TryGetComponent(uid, out var gridComp))
+                continue;
+
+            foreach (var (index, chunk) in gridComp.Chunks)
+            {
+                if (chunk.FilledTiles > 0)
+                    continue;
+
+                Log.Warning($"Encountered empty chunk while deserializing map. Grid: {ToPrettyString(uid)}. Chunk index: {index}");
+                gridComp.Chunks.Remove(index);
+            }
+        }
+    }
+
     private bool VerifyEntitiesExist(MapData data, BeforeEntityReadEvent ev)
     {
         _stopwatch.Restart();