Merge remote-tracking branch 'wizards/master' into upstream-sync

# Conflicts: # Content.Client/Options/UI/Tabs/AudioTab.xaml.cs # Content.Server/Chat/Managers/ChatManager.cs # Content.Server/Chat/Systems/ChatSystem.cs # Content.Server/GameTicking/GameTicker.StatusShell.cs # Content.Server/RoundEnd/RoundEndSystem.cs # Resources/Prototypes/Datasets/Names/Operation_suffix.yml # Resources/Prototypes/Entities/Mobs/Cyborgs/base_borg_chassis.yml # Resources/Prototypes/Maps/core.yml # Resources/ServerInfo/Guidebook/Cargo/Salvage.xml # Resources/ServerInfo/Guidebook/Science/Robotics.xml
2026-02-15 03:31:44 +01:00 · 2023-12-03 15:10:26 +03:00
parent 43c3ab26b6 18fbd0b634
commit f8d4eea0dc
629 changed files with 1000947 additions and 817412 deletions
--- a/Content.Client/Audio/AmbientSoundSystem.cs
+++ b/Content.Client/Audio/AmbientSoundSystem.cs
@@ -1,16 +1,21 @@
-using System.Linq;
-using System.Numerics;
 using Content.Shared.Audio;
 using Content.Shared.CCVar;
-using Robust.Client.GameObjects;
 using Robust.Client.Graphics;
 using Robust.Client.Player;
 using Robust.Shared.Audio;
+using Robust.Shared.Log;
 using Robust.Shared.Configuration;
+using Robust.Shared.Map;
 using Robust.Shared.Physics;
 using Robust.Shared.Random;
 using Robust.Shared.Timing;
 using Robust.Shared.Utility;
+using System.Linq;
+using System.Numerics;
+using Robust.Client.GameObjects;
+using Robust.Shared.Audio.Effects;
+using Robust.Shared.Audio.Systems;
+using Robust.Shared.Player;

 namespace Content.Client.Audio;
 //TODO: This is using a incomplete version of the whole "only play nearest sounds" algo, that breaks down a bit should the ambient sound cap get hit.
@@ -41,14 +46,18 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem
    private TimeSpan _targetTime = TimeSpan.Zero;
    private float _ambienceVolume = 0.0f;

-    private static AudioParams _params = AudioParams.Default.WithVariation(0.01f).WithLoop(true).WithAttenuation(Attenuation.LinearDistance);
+    private static AudioParams _params = AudioParams.Default
+        .WithVariation(0.01f)
+        .WithLoop(true)
+        .WithAttenuation(Attenuation.LinearDistance)
+        .WithMaxDistance(7f);

    /// <summary>
    /// How many times we can be playing 1 particular sound at once.
    /// </summary>
    private int MaxSingleSound => (int) (_maxAmbientCount / (16.0f / 6.0f));

-    private readonly Dictionary<Entity<AmbientSoundComponent>, (IPlayingAudioStream? Stream, SoundSpecifier Sound, string Path)> _playingSounds = new();
+    private readonly Dictionary<AmbientSoundComponent, (EntityUid? Stream, SoundSpecifier Sound, string Path)> _playingSounds = new();
    private readonly Dictionary<string, int> _playingCount = new();

    public bool OverlayEnabled
@@ -98,10 +107,10 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem

    private void OnShutdown(EntityUid uid, AmbientSoundComponent component, ComponentShutdown args)
    {
-        if (!_playingSounds.Remove((uid, component), out var sound))
+        if (!_playingSounds.Remove(component, out var sound))
            return;

-        sound.Stream?.Stop();
+        _audio.Stop(sound.Stream);
        _playingCount[sound.Path] -= 1;
        if (_playingCount[sound.Path] == 0)
            _playingCount.Remove(sound.Path);
@@ -111,13 +120,13 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem
    {
        _ambienceVolume = value;

-        foreach (var ((_, comp), values) in _playingSounds)
+        foreach (var (comp, values) in _playingSounds)
        {
            if (values.Stream == null)
                continue;

-            var stream = (AudioSystem.PlayingStream) values.Stream;
-            stream.Volume = _params.Volume + comp.Volume + _ambienceVolume;
+            var stream = values.Stream;
+            _audio.SetVolume(stream, _params.Volume + comp.Volume + _ambienceVolume);
        }
    }
    private void SetCooldown(float value) => _cooldown = value;
@@ -177,7 +186,7 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem
    {
        foreach (var (stream, _, _) in _playingSounds.Values)
        {
-            stream?.Stop();
+            _audio.Stop(stream);
        }

        _playingSounds.Clear();
@@ -186,7 +195,7 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem

    private readonly struct QueryState
    {
-        public readonly Dictionary<string, List<(float Importance, Entity<AmbientSoundComponent>)>> SourceDict = new();
+        public readonly Dictionary<string, List<(float Importance, AmbientSoundComponent)>> SourceDict = new();
        public readonly Vector2 MapPos;
        public readonly TransformComponent Player;
        public readonly EntityQuery<TransformComponent> Query;
@@ -224,7 +233,7 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem

        // Prioritize far away & loud sounds.
        var importance = range * (ambientComp.Volume + 32);
-        state.SourceDict.GetOrNew(key).Add((importance, (ambientComp.Owner, ambientComp)));
+        state.SourceDict.GetOrNew(key).Add((importance, ambientComp));
        return true;
    }

@@ -238,10 +247,9 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem
        var mapPos = playerXform.MapPosition;

        // Remove out-of-range ambiences
-        foreach (var (ent, sound) in _playingSounds)
+        foreach (var (comp, sound) in _playingSounds)
        {
-            var entity = ent.Owner;
-            var comp = ent.Comp;
+            var entity = comp.Owner;

            if (comp.Enabled &&
                // Don't keep playing sounds that have changed since.
@@ -258,8 +266,8 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem
                    continue;
            }

-            sound.Stream?.Stop();
-            _playingSounds.Remove((entity, comp));
+            _audio.Stop(sound.Stream);
+            _playingSounds.Remove(comp);
            _playingCount[sound.Path] -= 1;
            if (_playingCount[sound.Path] == 0)
                _playingCount.Remove(sound.Path);
@@ -284,12 +292,11 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem

            sources.Sort(static (a, b) => b.Importance.CompareTo(a.Importance));

-            foreach (var (_, ent) in sources)
+            foreach (var (_, comp) in sources)
            {
-                var uid = ent.Owner;
-                var comp = ent.Comp;
+                var uid = comp.Owner;

-                if (_playingSounds.ContainsKey(ent) ||
+                if (_playingSounds.ContainsKey(comp) ||
                    metaQuery.GetComponent(uid).EntityPaused)
                    continue;

@@ -299,11 +306,8 @@ public sealed class AmbientSoundSystem : SharedAmbientSoundSystem
                    .WithPlayOffset(_random.NextFloat(0.0f, 100.0f))
                    .WithMaxDistance(comp.Range);

-                var stream = _audio.PlayPvs(comp.Sound, uid, audioParams);
-                if (stream == null)
-                    continue;
-
-                _playingSounds[ent] = (stream, comp.Sound, key);
+                var stream = _audio.PlayEntity(comp.Sound, Filter.Local(), uid, false, audioParams);
+                _playingSounds[comp] = (stream.Value.Entity, comp.Sound, key);
                playingCount++;

                if (_playingSounds.Count >= _maxAmbientCount)
--- a/Content.Client/Audio/BackgroundAudioSystem.cs
+++ b/Content.Client/Audio/BackgroundAudioSystem.cs
@@ -5,6 +5,7 @@ using JetBrains.Annotations;
 using Robust.Client;
 using Robust.Client.State;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Player;

@@ -21,7 +22,7 @@ public sealed class BackgroundAudioSystem : EntitySystem

    private readonly AudioParams _lobbyParams = new(-5f, 1, "Master", 0, 0, 0, true, 0f);

-    private IPlayingAudioStream? _lobbyStream;
+    private EntityUid? _lobbyStream;

    public override void Initialize()
    {
@@ -118,12 +119,11 @@ public sealed class BackgroundAudioSystem : EntitySystem
        }

        _lobbyStream = _audio.PlayGlobal(file, Filter.Local(), false,
-            _lobbyParams.WithVolume(_lobbyParams.Volume + _configManager.GetCVar(CCVars.LobbyMusicVolume)));
+            _lobbyParams.WithVolume(_lobbyParams.Volume + _configManager.GetCVar(CCVars.LobbyMusicVolume)))?.Entity;
    }

    private void EndLobbyMusic()
    {
-        _lobbyStream?.Stop();
-        _lobbyStream = null;
+        _lobbyStream = _audio.Stop(_lobbyStream);
    }
 }
--- a/Content.Client/Audio/ClientGlobalSoundSystem.cs
+++ b/Content.Client/Audio/ClientGlobalSoundSystem.cs
@@ -2,6 +2,7 @@
 using Content.Shared.CCVar;
 using Content.Shared.GameTicking;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Player;

@@ -14,11 +15,11 @@ public sealed class ClientGlobalSoundSystem : SharedGlobalSoundSystem

    // Admin music
    private bool _adminAudioEnabled = true;
-    private List<IPlayingAudioStream?> _adminAudio = new(1);
+    private List<EntityUid?> _adminAudio = new(1);

    // Event sounds (e.g. nuke timer)
    private bool _eventAudioEnabled = true;
-    private Dictionary<StationEventMusicType, IPlayingAudioStream?> _eventAudio = new(1);
+    private Dictionary<StationEventMusicType, EntityUid?> _eventAudio = new(1);

    public override void Initialize()
    {
@@ -49,13 +50,13 @@ public sealed class ClientGlobalSoundSystem : SharedGlobalSoundSystem
    {
        foreach (var stream in _adminAudio)
        {
-            stream?.Stop();
+            _audio.Stop(stream);
        }
        _adminAudio.Clear();

-        foreach (var (_, stream) in _eventAudio)
+        foreach (var stream in _eventAudio.Values)
        {
-            stream?.Stop();
+            _audio.Stop(stream);
        }

        _eventAudio.Clear();
@@ -66,7 +67,7 @@ public sealed class ClientGlobalSoundSystem : SharedGlobalSoundSystem
        if(!_adminAudioEnabled) return;

        var stream = _audio.PlayGlobal(soundEvent.Filename, Filter.Local(), false, soundEvent.AudioParams);
-        _adminAudio.Add(stream);
+        _adminAudio.Add(stream.Value.Entity);
    }

    private void PlayStationEventMusic(StationEventMusicEvent soundEvent)
@@ -75,7 +76,7 @@ public sealed class ClientGlobalSoundSystem : SharedGlobalSoundSystem
        if(!_eventAudioEnabled || _eventAudio.ContainsKey(soundEvent.Type)) return;

        var stream = _audio.PlayGlobal(soundEvent.Filename, Filter.Local(), false, soundEvent.AudioParams);
-        _eventAudio.Add(soundEvent.Type, stream);
+        _eventAudio.Add(soundEvent.Type, stream.Value.Entity);
    }

    private void PlayGameSound(GameGlobalSoundEvent soundEvent)
@@ -85,8 +86,10 @@ public sealed class ClientGlobalSoundSystem : SharedGlobalSoundSystem

    private void StopStationEventMusic(StopStationEventMusic soundEvent)
    {
-        if (!_eventAudio.TryGetValue(soundEvent.Type, out var stream)) return;
-        stream?.Stop();
+        if (!_eventAudio.TryGetValue(soundEvent.Type, out var stream))
+            return;
+
+        _audio.Stop(stream);
        _eventAudio.Remove(soundEvent.Type);
    }

@@ -96,7 +99,7 @@ public sealed class ClientGlobalSoundSystem : SharedGlobalSoundSystem
        if (_adminAudioEnabled) return;
        foreach (var stream in _adminAudio)
        {
-            stream?.Stop();
+            _audio.Stop(stream);
        }
        _adminAudio.Clear();
    }
@@ -107,7 +110,7 @@ public sealed class ClientGlobalSoundSystem : SharedGlobalSoundSystem
        if (_eventAudioEnabled) return;
        foreach (var stream in _eventAudio)
        {
-            stream.Value?.Stop();
+            _audio.Stop(stream.Value);
        }
        _eventAudio.Clear();
    }
--- a/Content.Client/Audio/ContentAudioSystem.AmbientMusic.cs
+++ b/Content.Client/Audio/ContentAudioSystem.AmbientMusic.cs
@@ -9,6 +9,8 @@ using Robust.Client.Player;
 using Robust.Client.ResourceManagement;
 using Robust.Client.State;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Components;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Player;
 using Robust.Shared.Prototypes;
@@ -39,7 +41,7 @@ public sealed partial class ContentAudioSystem
    // Don't need to worry about this being serializable or pauseable as it doesn't affect the sim.
    private TimeSpan _nextAudio;

-    private AudioSystem.PlayingStream? _ambientMusicStream;
+    private EntityUid? _ambientMusicStream;
    private AmbientMusicPrototype? _musicProto;

    /// <summary>
@@ -58,12 +60,6 @@ public sealed partial class ContentAudioSystem

    private void InitializeAmbientMusic()
    {
-        // TODO: Shitty preload
-        foreach (var audio in _proto.Index<SoundCollectionPrototype>("AmbienceSpace").PickFiles)
-        {
-            _resource.GetResource<AudioResource>(audio.ToString());
-        }
-
        _configManager.OnValueChanged(CCVars.AmbientMusicVolume, AmbienceCVarChanged, true);
        _sawmill = IoCManager.Resolve<ILogManager>().GetSawmill("audio.ambience");

@@ -83,7 +79,7 @@ public sealed partial class ContentAudioSystem

        if (_ambientMusicStream != null && _musicProto != null)
        {
-            _ambientMusicStream.Volume = _musicProto.Sound.Params.Volume + _volumeSlider;
+            _audio.SetVolume(_ambientMusicStream, _musicProto.Sound.Params.Volume + _volumeSlider);
        }
    }

@@ -92,7 +88,7 @@ public sealed partial class ContentAudioSystem
        _configManager.UnsubValueChanged(CCVars.AmbientMusicVolume, AmbienceCVarChanged);
        _proto.PrototypesReloaded -= OnProtoReload;
        _state.OnStateChanged -= OnStateChange;
-        _ambientMusicStream?.Stop();
+        _ambientMusicStream = _audio.Stop(_ambientMusicStream);
    }

    private void OnProtoReload(PrototypesReloadedEventArgs obj)
@@ -129,8 +125,7 @@ public sealed partial class ContentAudioSystem
    private void OnRoundEndMessage(RoundEndMessageEvent ev)
    {
        // If scoreboard shows then just stop the music
-        _ambientMusicStream?.Stop();
-        _ambientMusicStream = null;
+        _ambientMusicStream = _audio.Stop(_ambientMusicStream);
        _nextAudio = TimeSpan.FromMinutes(3);
    }

@@ -170,15 +165,20 @@ public sealed partial class ContentAudioSystem
            return;
        }

-        var isDone = _ambientMusicStream?.Done;
+        bool? isDone = null;
+
+        if (TryComp(_ambientMusicStream, out AudioComponent? audioComp))
+        {
+            isDone = !audioComp.Playing;
+        }

        if (_interruptable)
        {
-            var player = _player.LocalPlayer?.ControlledEntity;
+            var player = _player.LocalSession?.AttachedEntity;

            if (player == null || _musicProto == null || !_rules.IsTrue(player.Value, _proto.Index<RulesPrototype>(_musicProto.Rules)))
            {
-                FadeOut(_ambientMusicStream, AmbientMusicFadeTime);
+                FadeOut(_ambientMusicStream, duration: AmbientMusicFadeTime);
                _musicProto = null;
                _interruptable = false;
                isDone = true;
@@ -221,14 +221,11 @@ public sealed partial class ContentAudioSystem
            false,
            AudioParams.Default.WithVolume(_musicProto.Sound.Params.Volume + _volumeSlider));

-        if (strim != null)
-        {
-            _ambientMusicStream = (AudioSystem.PlayingStream) strim;
+        _ambientMusicStream = strim.Value.Entity;

-            if (_musicProto.FadeIn)
-            {
-                FadeIn(_ambientMusicStream, AmbientMusicFadeTime);
-            }
+        if (_musicProto.FadeIn)
+        {
+            FadeIn(_ambientMusicStream, strim.Value.Component, AmbientMusicFadeTime);
        }

        // Refresh the list
--- a/Content.Client/Audio/ContentAudioSystem.cs
+++ b/Content.Client/Audio/ContentAudioSystem.cs
@@ -1,17 +1,19 @@
 using Content.Shared.Audio;
 using Robust.Client.GameObjects;
+using Robust.Shared.Audio;
+using AudioComponent = Robust.Shared.Audio.Components.AudioComponent;

 namespace Content.Client.Audio;

 public sealed partial class ContentAudioSystem : SharedContentAudioSystem
 {
    // Need how much volume to change per tick and just remove it when it drops below "0"
-    private readonly Dictionary<AudioSystem.PlayingStream, float> _fadingOut = new();
+    private readonly Dictionary<EntityUid, float> _fadingOut = new();

    // Need volume change per tick + target volume.
-    private readonly Dictionary<AudioSystem.PlayingStream, (float VolumeChange, float TargetVolume)> _fadingIn = new();
+    private readonly Dictionary<EntityUid, (float VolumeChange, float TargetVolume)> _fadingIn = new();

-    private readonly List<AudioSystem.PlayingStream> _fadeToRemove = new();
+    private readonly List<EntityUid> _fadeToRemove = new();

    private const float MinVolume = -32f;
    private const float DefaultDuration = 2f;
@@ -42,28 +44,28 @@ public sealed partial class ContentAudioSystem : SharedContentAudioSystem

    #region Fades

-    public void FadeOut(AudioSystem.PlayingStream? stream, float duration = DefaultDuration)
+    public void FadeOut(EntityUid? stream, AudioComponent? component = null, float duration = DefaultDuration)
    {
-        if (stream == null || duration <= 0f)
+        if (stream == null || duration <= 0f || !Resolve(stream.Value, ref component))
            return;

        // Just in case
        // TODO: Maybe handle the removals by making it seamless?
-        _fadingIn.Remove(stream);
-        var diff = stream.Volume - MinVolume;
-        _fadingOut.Add(stream, diff / duration);
+        _fadingIn.Remove(stream.Value);
+        var diff = component.Volume - MinVolume;
+        _fadingOut.Add(stream.Value, diff / duration);
    }

-    public void FadeIn(AudioSystem.PlayingStream? stream, float duration = DefaultDuration)
+    public void FadeIn(EntityUid? stream, AudioComponent? component = null, float duration = DefaultDuration)
    {
-        if (stream == null || duration <= 0f || stream.Volume < MinVolume)
+        if (stream == null || duration <= 0f || !Resolve(stream.Value, ref component) || component.Volume < MinVolume)
            return;

-        _fadingOut.Remove(stream);
-        var curVolume = stream.Volume;
+        _fadingOut.Remove(stream.Value);
+        var curVolume = component.Volume;
        var change = (curVolume - MinVolume) / duration;
-        _fadingIn.Add(stream, (change, stream.Volume));
-        stream.Volume = MinVolume;
+        _fadingIn.Add(stream.Value, (change, component.Volume));
+        component.Volume = MinVolume;
    }

    private void UpdateFades(float frameTime)
@@ -72,19 +74,18 @@ public sealed partial class ContentAudioSystem : SharedContentAudioSystem

        foreach (var (stream, change) in _fadingOut)
        {
-            // Cancelled elsewhere
-            if (stream.Done)
+            if (!TryComp(stream, out AudioComponent? component))
            {
                _fadeToRemove.Add(stream);
                continue;
            }

-            var volume = stream.Volume - change * frameTime;
-            stream.Volume = MathF.Max(MinVolume, volume);
+            var volume = component.Volume - change * frameTime;
+            component.Volume = MathF.Max(MinVolume, volume);

-            if (stream.Volume.Equals(MinVolume))
+            if (component.Volume.Equals(MinVolume))
            {
-                stream.Stop();
+                _audio.Stop(stream);
                _fadeToRemove.Add(stream);
            }
        }
@@ -99,16 +100,16 @@ public sealed partial class ContentAudioSystem : SharedContentAudioSystem
        foreach (var (stream, (change, target)) in _fadingIn)
        {
            // Cancelled elsewhere
-            if (stream.Done)
+            if (!TryComp(stream, out AudioComponent? component))
            {
                _fadeToRemove.Add(stream);
                continue;
            }

-            var volume = stream.Volume + change * frameTime;
-            stream.Volume = MathF.Min(target, volume);
+            var volume = component.Volume + change * frameTime;
+            component.Volume = MathF.Min(target, volume);

-            if (stream.Volume.Equals(target))
+            if (component.Volume.Equals(target))
            {
                _fadeToRemove.Add(stream);
            }
--- a/Content.Client/Changelog/ChangelogTab.xaml.cs
+++ b/Content.Client/Changelog/ChangelogTab.xaml.cs
@@ -7,6 +7,7 @@ using Robust.Client.ResourceManagement;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.XAML;
+using Robust.Shared.ContentPack;
 using Robust.Shared.Utility;
 using static Content.Client.Changelog.ChangelogManager;
 using static Robust.Client.UserInterface.Controls.BoxContainer;
--- a/Content.Client/Credits/CreditsWindow.xaml.cs
+++ b/Content.Client/Credits/CreditsWindow.xaml.cs
@@ -11,6 +11,7 @@ using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Client.UserInterface.XAML;
 using Robust.Shared.Configuration;
+using Robust.Shared.ContentPack;
 using Robust.Shared.IoC;
 using Robust.Shared.Localization;
 using Robust.Shared.Maths;
@@ -23,7 +24,7 @@ namespace Content.Client.Credits
    [GenerateTypedNameReferences]
    public sealed partial class CreditsWindow : DefaultWindow
    {
-        [Dependency] private readonly IResourceCache _resourceManager = default!;
+        [Dependency] private readonly IResourceManager _resourceManager = default!;
        [Dependency] private readonly IConfigurationManager _cfg = default!;

        private static readonly Dictionary<string, int> PatronTierPriority = new()
@@ -49,7 +50,7 @@ namespace Content.Client.Credits

        private void PopulateLicenses(BoxContainer licensesContainer)
        {
-            foreach (var entry in CreditsManager.GetLicenses().OrderBy(p => p.Name))
+            foreach (var entry in CreditsManager.GetLicenses(_resourceManager).OrderBy(p => p.Name))
            {
                licensesContainer.AddChild(new Label {StyleClasses = {StyleBase.StyleClassLabelHeading}, Text = entry.Name});

--- a/Content.Client/Disposal/Systems/DisposalUnitSystem.cs
+++ b/Content.Client/Disposal/Systems/DisposalUnitSystem.cs
@@ -6,6 +6,8 @@ using Content.Shared.Emag.Systems;
 using Robust.Client.GameObjects;
 using Robust.Client.Animations;
 using Robust.Client.Graphics;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.GameStates;
 using Robust.Shared.Physics.Events;
 using static Content.Shared.Disposal.Components.SharedDisposalUnitComponent;
--- a/Content.Client/Doors/DoorSystem.cs
+++ b/Content.Client/Doors/DoorSystem.cs
@@ -138,6 +138,6 @@ public sealed class DoorSystem : SharedDoorSystem
    protected override void PlaySound(EntityUid uid, SoundSpecifier soundSpecifier, AudioParams audioParams, EntityUid? predictingPlayer, bool predicted)
    {
        if (GameTiming.InPrediction && GameTiming.IsFirstTimePredicted)
-            Audio.Play(soundSpecifier, Filter.Local(), uid, false, audioParams);
+            Audio.PlayEntity(soundSpecifier, Filter.Local(), uid, false, audioParams);
    }
 }
--- a/Content.Client/GameTicking/Managers/ClientGameTicker.cs
+++ b/Content.Client/GameTicking/Managers/ClientGameTicker.cs
@@ -7,6 +7,8 @@ using Content.Shared.GameWindow;
 using JetBrains.Annotations;
 using Robust.Client.Graphics;
 using Robust.Client.State;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Player;
 using Robust.Shared.Utility;
--- a/Content.Client/Gravity/GravitySystem.Shake.cs
+++ b/Content.Client/Gravity/GravitySystem.Shake.cs
@@ -3,6 +3,7 @@ using Content.Shared.Camera;
 using Content.Shared.Gravity;
 using Robust.Client.Player;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Player;
 using Robust.Shared.Random;

--- a/Content.Client/Guidebook/GuidebookSystem.cs
+++ b/Content.Client/Guidebook/GuidebookSystem.cs
@@ -9,6 +9,8 @@ using Content.Shared.Tag;
 using Content.Shared.Verbs;
 using Robust.Client.GameObjects;
 using Robust.Client.Player;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Map;
 using Robust.Shared.Player;
 using Robust.Shared.Timing;
--- a/Content.Client/Info/RulesAndInfoWindow.cs
+++ b/Content.Client/Info/RulesAndInfoWindow.cs
@@ -11,7 +11,7 @@ namespace Content.Client.Info
 {
    public sealed class RulesAndInfoWindow : DefaultWindow
    {
-        [Dependency] private readonly IResourceCache _resourceManager = default!;
+        [Dependency] private readonly IResourceManager _resourceManager = default!;
        [Dependency] private readonly RulesManager _rules = default!;

        public RulesAndInfoWindow()
--- a/Content.Client/Instruments/InstrumentSystem.cs
+++ b/Content.Client/Instruments/InstrumentSystem.cs
@@ -124,7 +124,6 @@ public sealed class InstrumentSystem : SharedInstrumentSystem

        instrument.SequenceDelay = 0;
        instrument.SequenceStartTick = 0;
-        _midiManager.OcclusionCollisionMask = (int) CollisionGroup.Impassable;
        instrument.Renderer = _midiManager.GetNewRenderer();

        if (instrument.Renderer != null)
--- a/Content.Client/IoC/StaticIoC.cs
+++ b/Content.Client/IoC/StaticIoC.cs
@@ -1,4 +1,5 @@
 using Robust.Client.ResourceManagement;
+using Robust.Shared.ContentPack;
 using Robust.Shared.IoC;

 namespace Content.Client.IoC
--- a/Content.Client/Light/Components/ExpendableLightComponent.cs
+++ b/Content.Client/Light/Components/ExpendableLightComponent.cs
@@ -44,7 +44,7 @@ public sealed partial class ExpendableLightComponent : SharedExpendableLightComp
    /// The sound that plays when the expendable light is lit.
    /// </summary>
    [Access(typeof(ExpendableLightSystem))]
-    public IPlayingAudioStream? PlayingStream;
+    public EntityUid? PlayingStream;
 }

 public enum ExpendableLightVisualLayers : byte
--- a/Content.Client/Light/EntitySystems/ExpendableLightSystem.cs
+++ b/Content.Client/Light/EntitySystems/ExpendableLightSystem.cs
@@ -2,6 +2,8 @@ using Content.Client.Light.Components;
 using Content.Shared.Light.Components;
 using Robust.Client.GameObjects;
 using Robust.Client.Graphics;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;

 namespace Content.Client.Light.EntitySystems;

@@ -19,7 +21,7 @@ public sealed class ExpendableLightSystem : VisualizerSystem<ExpendableLightComp

    private void OnLightShutdown(EntityUid uid, ExpendableLightComponent component, ComponentShutdown args)
    {
-        component.PlayingStream?.Stop();
+        component.PlayingStream = _audioSystem.Stop(component.PlayingStream);
    }

    protected override void OnAppearanceChange(EntityUid uid, ExpendableLightComponent comp, ref AppearanceChangeEvent args)
@@ -48,12 +50,10 @@ public sealed class ExpendableLightSystem : VisualizerSystem<ExpendableLightComp
        switch (state)
        {
            case ExpendableLightState.Lit:
-                comp.PlayingStream?.Stop();
+                _audioSystem.Stop(comp.PlayingStream);
                comp.PlayingStream = _audioSystem.PlayPvs(
-                    comp.LoopedSound,
-                    uid,
-                    SharedExpendableLightComponent.LoopedSoundParams
-                );
+                    comp.LoopedSound, uid, SharedExpendableLightComponent.LoopedSoundParams)?.Entity;
+
                if (args.Sprite.LayerMapTryGet(ExpendableLightVisualLayers.Overlay, out var layerIdx, true))
                {
                    if (!string.IsNullOrWhiteSpace(comp.IconStateLit))
@@ -73,7 +73,7 @@ public sealed class ExpendableLightSystem : VisualizerSystem<ExpendableLightComp

                break;
            case ExpendableLightState.Dead:
-                comp.PlayingStream?.Stop();
+                comp.PlayingStream = _audioSystem.Stop(comp.PlayingStream);
                if (args.Sprite.LayerMapTryGet(ExpendableLightVisualLayers.Overlay, out layerIdx, true))
                {
                    if (!string.IsNullOrWhiteSpace(comp.IconStateSpent))
--- a/Content.Client/Light/Visualizers/PoweredLightVisualizerSystem.cs
+++ b/Content.Client/Light/Visualizers/PoweredLightVisualizerSystem.cs
@@ -2,6 +2,8 @@ using Content.Shared.Light;
 using Robust.Client.Animations;
 using Robust.Client.GameObjects;
 using Robust.Shared.Animations;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Random;

 namespace Content.Client.Light.Visualizers;
--- a/Content.Client/Lobby/UI/LobbyCharacterPreviewPanel.cs
+++ b/Content.Client/Lobby/UI/LobbyCharacterPreviewPanel.cs
@@ -119,7 +119,7 @@ namespace Content.Client.Lobby.UI
                        OverrideDirection = Direction.South,
                        Scale = new Vector2(4f, 4f),
                        MaxSize = new Vector2(112, 112),
-                        Stretch = SpriteView.StretchMode.None,
+                        Stretch = SpriteView.StretchMode.Fill,
                    };
                    spriteView.SetEntity(_previewDummy.Value);
                    _viewBox.AddChild(spriteView);
--- a/Content.Client/Options/UI/Tabs/AudioTab.xaml.cs
+++ b/Content.Client/Options/UI/Tabs/AudioTab.xaml.cs
@@ -1,6 +1,8 @@
 using Content.Shared.CCVar;
 using Content.Shared.Corvax.CCCVars;
+using Robust.Client.Audio;
 using Robust.Client.AutoGenerated;
+using Robust.Client.GameObjects;
 using Robust.Client.Graphics;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
@@ -15,13 +17,14 @@ namespace Content.Client.Options.UI.Tabs
    public sealed partial class AudioTab : Control
    {
        [Dependency] private readonly IConfigurationManager _cfg = default!;
-        [Dependency] private readonly IClydeAudio _clydeAudio = default!;
+        private readonly AudioSystem _audio;

        public AudioTab()
        {
            RobustXamlLoader.Load(this);
            IoCManager.InjectDependencies(this);

+            _audio = IoCManager.Resolve<IEntityManager>().System<AudioSystem>();
            LobbyMusicCheckBox.Pressed = _cfg.GetCVar(CCVars.LobbyMusicEnabled);
            RestartSoundsCheckBox.Pressed = _cfg.GetCVar(CCVars.RestartSoundsEnabled);
            EventMusicCheckBox.Pressed = _cfg.GetCVar(CCVars.EventMusicEnabled);
@@ -82,7 +85,7 @@ namespace Content.Client.Options.UI.Tabs

        private void OnMasterVolumeSliderChanged(Range range)
        {
-            _clydeAudio.SetMasterVolume(MasterVolumeSlider.Value / 100);
+            _audio.SetMasterVolume(MasterVolumeSlider.Value / 100);
            UpdateChanges();
        }

@@ -118,7 +121,7 @@ namespace Content.Client.Options.UI.Tabs

        private void OnApplyButtonPressed(BaseButton.ButtonEventArgs args)
        {
-            _cfg.SetCVar(CVars.AudioMasterVolume, MasterVolumeSlider.Value / 100);
+            _cfg.SetCVar(CVars.AudioMasterVolume, LV100ToDB(MasterVolumeSlider.Value, CCVars.MasterMultiplier));
            // Want the CVar updated values to have the multiplier applied
            // For the UI we just display 0-100 still elsewhere
            _cfg.SetCVar(CVars.MidiVolume, LV100ToDB(MidiVolumeSlider.Value, CCVars.MidiMultiplier));
@@ -143,7 +146,7 @@ namespace Content.Client.Options.UI.Tabs

        private void Reset()
        {
-            MasterVolumeSlider.Value = _cfg.GetCVar(CVars.AudioMasterVolume) * 100;
+            MasterVolumeSlider.Value = DBToLV100(_cfg.GetCVar(CVars.AudioMasterVolume), CCVars.MasterMultiplier);
            MidiVolumeSlider.Value = DBToLV100(_cfg.GetCVar(CVars.MidiVolume), CCVars.MidiMultiplier);
            AmbienceVolumeSlider.Value = DBToLV100(_cfg.GetCVar(CCVars.AmbienceVolume), CCVars.AmbienceMultiplier);
            AmbientMusicVolumeSlider.Value =
@@ -162,8 +165,8 @@ namespace Content.Client.Options.UI.Tabs
        // Do be sure to rename the setting though
        private float DBToLV100(float db, float multiplier = 1f)
        {
-            var weh = (float) (Math.Pow(10, db / 10) * 100 / multiplier);
-            return weh;
+            var beri = (float) (Math.Pow(10, db / 10) * 100 / multiplier);
+            return beri;
        }

        private float LV100ToDB(float lv100, float multiplier = 1f)
@@ -176,7 +179,7 @@ namespace Content.Client.Options.UI.Tabs
        private void UpdateChanges()
        {
            var isMasterVolumeSame =
-                Math.Abs(MasterVolumeSlider.Value - _cfg.GetCVar(CVars.AudioMasterVolume) * 100) < 0.01f;
+                Math.Abs(MasterVolumeSlider.Value - DBToLV100(_cfg.GetCVar(CVars.AudioMasterVolume), CCVars.MasterMultiplier)) < 0.01f;
            var isMidiVolumeSame =
                Math.Abs(MidiVolumeSlider.Value - DBToLV100(_cfg.GetCVar(CVars.MidiVolume), CCVars.MidiMultiplier)) < 0.01f;
            var isAmbientVolumeSame =
--- a/Content.Client/Overlays/ShowSecurityIconsSystem.cs
+++ b/Content.Client/Overlays/ShowSecurityIconsSystem.cs
@@ -1,5 +1,6 @@
 using Content.Shared.Access.Components;
 using Content.Shared.Access.Systems;
+using Content.Shared.Mindshield.Components;
 using Content.Shared.Overlays;
 using Content.Shared.PDA;
 using Content.Shared.StatusIcon;
@@ -66,6 +67,12 @@ public sealed class ShowSecurityIconsSystem : EquipmentHudSystem<ShowSecurityIco
        else
            Log.Error($"Invalid job icon prototype: {jobIcon}");

+        if (TryComp<MindShieldComponent>(uid, out var comp))
+        {
+            if (_prototypeMan.TryIndex<StatusIconPrototype>(comp.MindShieldStatusIcon.Id, out var icon))
+                result.Add(icon);
+        }
+
        // Add arrest icons here, WYCI.

        return result;
--- a/Content.Client/Overlays/StencilOverlay.Weather.cs
+++ b/Content.Client/Overlays/StencilOverlay.Weather.cs
@@ -8,6 +8,8 @@ namespace Content.Client.Overlays;

 public sealed partial class StencilOverlay
 {
+    private List<Entity<MapGridComponent>> _grids = new();
+
    private void DrawWeather(in OverlayDrawArgs args, WeatherPrototype weatherProto, float alpha, Matrix3 invMatrix)
    {
        var worldHandle = args.WorldHandle;
@@ -21,15 +23,13 @@ public sealed partial class StencilOverlay
        // particularly for planet maps or stations.
        worldHandle.RenderInRenderTarget(_blep!, () =>
        {
-            var bodyQuery = _entManager.GetEntityQuery<PhysicsComponent>();
            var xformQuery = _entManager.GetEntityQuery<TransformComponent>();
-            var weatherIgnoreQuery = _entManager.GetEntityQuery<IgnoreWeatherComponent>();
+            _grids.Clear();

            // idk if this is safe to cache in a field and clear sloth help
-            var grids = new List<Entity<MapGridComponent>>();
-            _mapManager.FindGridsIntersecting(mapId, worldAABB, ref grids);
+            _mapManager.FindGridsIntersecting(mapId, worldAABB, ref _grids);

-            foreach (var grid in grids)
+            foreach (var grid in _grids)
            {
                var matrix = _transform.GetWorldMatrix(grid, xformQuery);
                Matrix3.Multiply(in matrix, in invMatrix, out var matty);
@@ -38,7 +38,7 @@ public sealed partial class StencilOverlay
                foreach (var tile in grid.Comp.GetTilesIntersecting(worldAABB))
                {
                    // Ignored tiles for stencil
-                    if (_weather.CanWeatherAffect(grid, tile, weatherIgnoreQuery, bodyQuery))
+                    if (_weather.CanWeatherAffect(grid, tile))
                    {
                        continue;
                    }
--- a/Content.Client/Parallax/Data/GeneratedParallaxTextureSource.cs
+++ b/Content.Client/Parallax/Data/GeneratedParallaxTextureSource.cs
@@ -57,16 +57,17 @@ public sealed partial class GeneratedParallaxTextureSource : IParallaxTextureSou
        }

        var debugParallax = IoCManager.Resolve<IConfigurationManager>().GetCVar(CCVars.ParallaxDebug);
+        var resManager = IoCManager.Resolve<IResourceManager>();

        if (debugParallax
-            || !StaticIoC.ResC.UserData.TryReadAllText(PreviousParallaxConfigPath, out var previousParallaxConfig)
+            || !resManager.UserData.TryReadAllText(PreviousParallaxConfigPath, out var previousParallaxConfig)
            || previousParallaxConfig != parallaxConfig)
        {
            var table = Toml.ReadString(parallaxConfig);
            await UpdateCachedTexture(table, debugParallax, cancel);

            //Update the previous config
-            using var writer = StaticIoC.ResC.UserData.OpenWriteText(PreviousParallaxConfigPath);
+            using var writer = resManager.UserData.OpenWriteText(PreviousParallaxConfigPath);
            writer.Write(parallaxConfig);
        }

@@ -81,7 +82,7 @@ public sealed partial class GeneratedParallaxTextureSource : IParallaxTextureSou
            try
            {
                // Also try to at least sort of fix this if we've been fooled by a config backup
-                StaticIoC.ResC.UserData.Delete(PreviousParallaxConfigPath);
+                resManager.UserData.Delete(PreviousParallaxConfigPath);
            }
            catch (Exception)
            {
@@ -104,31 +105,34 @@ public sealed partial class GeneratedParallaxTextureSource : IParallaxTextureSou
        // And load it in the main thread for safety reasons.
        // But before spending time saving it, make sure to exit out early if it's not wanted.
        cancel.ThrowIfCancellationRequested();
+        var resManager = IoCManager.Resolve<IResourceManager>();

        // Store it and CRC so further game starts don't need to regenerate it.
-        using var imageStream = StaticIoC.ResC.UserData.OpenWrite(ParallaxCachedImagePath);
-        newParallexImage.SaveAsPng(imageStream);
+        await using var imageStream = resManager.UserData.OpenWrite(ParallaxCachedImagePath);
+        await newParallexImage.SaveAsPngAsync(imageStream, cancel);

        if (saveDebugLayers)
        {
            for (var i = 0; i < debugImages!.Count; i++)
            {
                var debugImage = debugImages[i];
-                using var debugImageStream = StaticIoC.ResC.UserData.OpenWrite(new ResPath($"/parallax_{Identifier}debug_{i}.png"));
-                debugImage.SaveAsPng(debugImageStream);
+                await using var debugImageStream = resManager.UserData.OpenWrite(new ResPath($"/parallax_{Identifier}debug_{i}.png"));
+                await debugImage.SaveAsPngAsync(debugImageStream, cancel);
            }
        }
    }

    private Texture GetCachedTexture()
    {
-        using var imageStream = StaticIoC.ResC.UserData.OpenRead(ParallaxCachedImagePath);
+        var resManager = IoCManager.Resolve<IResourceManager>();
+        using var imageStream = resManager.UserData.OpenRead(ParallaxCachedImagePath);
        return Texture.LoadFromPNGStream(imageStream, "Parallax");
    }

    private string? GetParallaxConfig()
    {
-        if (!StaticIoC.ResC.TryContentFileRead(ParallaxConfigPath, out var configStream))
+        var resManager = IoCManager.Resolve<IResourceManager>();
+        if (!resManager.TryContentFileRead(ParallaxConfigPath, out var configStream))
        {
            return null;
        }
--- a/Content.Client/Replay/ContentReplayPlaybackManager.cs
+++ b/Content.Client/Replay/ContentReplayPlaybackManager.cs
@@ -139,7 +139,6 @@ public sealed class ContentReplayPlaybackManager
        {
            case RoundEndMessageEvent:
            case PopupEvent:
-            case AudioMessage:
            case PickupAnimationEvent:
            case MeleeLungeEvent:
            case SharedGunSystem.HitscanEvent:
--- a/Content.Client/Research/UI/MiniTechnologyCardControl.xaml.cs
+++ b/Content.Client/Research/UI/MiniTechnologyCardControl.xaml.cs
@@ -1,4 +1,4 @@
-using Content.Shared.Research.Prototypes;
+using Content.Shared.Research.Prototypes;
 using Robust.Client.AutoGenerated;
 using Robust.Client.GameObjects;
 using Robust.Client.UserInterface;
@@ -12,6 +12,9 @@ namespace Content.Client.Research.UI;
 [GenerateTypedNameReferences]
 public sealed partial class MiniTechnologyCardControl : Control
 {
+    /// The technology that this control represents
+    public readonly TechnologyPrototype Technology;
+
    public MiniTechnologyCardControl(TechnologyPrototype technology, IPrototypeManager prototypeManager, SpriteSystem spriteSys, FormattedMessage description)
    {
        RobustXamlLoader.Load(this);
@@ -24,5 +27,6 @@ public sealed partial class MiniTechnologyCardControl : Control
        var tooltip = new Tooltip();
        tooltip.SetMessage(description);
        Main.TooltipSupplier = _ => tooltip;
+        Technology = technology;
    }
 }
--- a/Content.Client/Research/UI/ResearchConsoleMenu.xaml.cs
+++ b/Content.Client/Research/UI/ResearchConsoleMenu.xaml.cs
@@ -1,3 +1,4 @@
+using System.Linq;
 using System.Numerics;
 using Content.Client.UserInterface.Controls;
 using Content.Shared.Access.Components;
@@ -48,16 +49,10 @@ public sealed partial class ResearchConsoleMenu : FancyWindow

    public void  UpdatePanels(ResearchConsoleBoundInterfaceState state)
    {
-        var allTech = _research.GetAvailableTechnologies(Entity);
-        AvailableCardsContainer.Children.Clear();
        TechnologyCardsContainer.Children.Clear();
-        UnlockedCardsContainer.Children.Clear();

-        foreach (var tech in allTech)
-        {
-            var mini = new MiniTechnologyCardControl(tech, _prototype, _sprite, _research.GetTechnologyDescription(tech));
-            AvailableCardsContainer.AddChild(mini);
-        }
+        var availableTech = _research.GetAvailableTechnologies(Entity);
+        SyncTechnologyList(AvailableCardsContainer, availableTech);

        if (_technologyDatabase == null)
            return;
@@ -79,12 +74,8 @@ public sealed partial class ResearchConsoleMenu : FancyWindow
            TechnologyCardsContainer.AddChild(cardControl);
        }

-        foreach (var unlocked in _technologyDatabase.UnlockedTechnologies)
-        {
-            var tech = _prototype.Index<TechnologyPrototype>(unlocked);
-            var cardControl = new MiniTechnologyCardControl(tech, _prototype, _sprite, _research.GetTechnologyDescription(tech, false));
-            UnlockedCardsContainer.AddChild(cardControl);
-        }
+        var unlockedTech = _technologyDatabase.UnlockedTechnologies.Select(x => _prototype.Index<TechnologyPrototype>(x));
+        SyncTechnologyList(UnlockedCardsContainer, unlockedTech);
    }

    public void UpdateInformationPanel(ResearchConsoleBoundInterfaceState state)
@@ -146,5 +137,46 @@ public sealed partial class ResearchConsoleMenu : FancyWindow
            TierDisplayContainer.AddChild(control);
        }
    }
+
+    /// <summary>
+    ///     Synchronize a container for technology cards with a list of technologies,
+    ///     creating or removing UI cards as appropriate.
+    /// </summary>
+    /// <param name="container">The container which contains the UI cards</param>
+    /// <param name="technologies">The current set of technologies for which there should be cards</param>
+    private void SyncTechnologyList(BoxContainer container, IEnumerable<TechnologyPrototype> technologies)
+    {
+        // For the cards which already exist, build a map from technology prototype to the UI card
+        var currentTechControls = new Dictionary<TechnologyPrototype, Control>();
+        foreach (var child in container.Children)
+        {
+            if (child is MiniTechnologyCardControl)
+            {
+                currentTechControls.Add((child as MiniTechnologyCardControl)!.Technology, child);
+            }
+        }
+
+        foreach (var tech in technologies)
+        {
+            if (!currentTechControls.ContainsKey(tech))
+            {
+                // Create a card for any technology which doesn't already have one.
+                var mini = new MiniTechnologyCardControl(tech, _prototype, _sprite, _research.GetTechnologyDescription(tech));
+                container.AddChild(mini);
+            }
+            else
+            {
+                // The tech already exists in the UI; remove it from the set, so we won't revisit it below
+                currentTechControls.Remove(tech);
+            }
+        }
+
+        // Now, any items left in the dictionary are technologies which were previously
+        // available, but now are not. Remove them.
+        foreach (var (tech, techControl) in currentTechControls)
+        {
+            container.Children.Remove(techControl);
+        }
+    }
 }

--- a/Content.Client/Traits/ParacusiaSystem.cs
+++ b/Content.Client/Traits/ParacusiaSystem.cs
@@ -3,6 +3,8 @@ using Content.Shared.Traits.Assorted;
 using Robust.Shared.Random;
 using Robust.Client.Player;
 using Robust.Shared.Player;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Timing;

 namespace Content.Client.Traits;
@@ -41,7 +43,7 @@ public sealed class ParacusiaSystem : SharedParacusiaSystem

    private void OnPlayerDetach(EntityUid uid, ParacusiaComponent component, LocalPlayerDetachedEvent args)
    {
-        component.Stream?.Stop();
+        component.Stream = _audio.Stop(component.Stream);
    }

    private void PlayParacusiaSounds(EntityUid uid)
@@ -67,7 +69,7 @@ public sealed class ParacusiaSystem : SharedParacusiaSystem
        var newCoords = Transform(uid).Coordinates.Offset(randomOffset);

        // Play the sound
-        paracusia.Stream = _audio.PlayStatic(paracusia.Sounds, uid, newCoords);
+        paracusia.Stream = _audio.PlayStatic(paracusia.Sounds, uid, newCoords).Value.Entity;
    }

 }
--- a/Content.Client/Trigger/TimerTriggerVisualizerSystem.cs
+++ b/Content.Client/Trigger/TimerTriggerVisualizerSystem.cs
@@ -1,6 +1,8 @@
 using Content.Shared.Trigger;
 using Robust.Client.Animations;
 using Robust.Client.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.GameObjects;

 namespace Content.Client.Trigger;
--- a/Content.Client/UserInterface/Systems/Bwoink/AHelpUIController.cs
+++ b/Content.Client/UserInterface/Systems/Bwoink/AHelpUIController.cs
@@ -13,6 +13,7 @@ using Content.Client.UserInterface.Systems.MenuBar.Widgets;
 using Content.Shared.Administration;
 using Content.Shared.Input;
 using JetBrains.Annotations;
+using Robust.Client.Audio;
 using Robust.Client.Graphics;
 using Robust.Client.Player;
 using Robust.Client.UserInterface;
@@ -20,6 +21,7 @@ using Robust.Client.UserInterface.Controllers;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Input.Binding;
 using Robust.Shared.Network;
 using Robust.Shared.Player;
@@ -34,6 +36,7 @@ public sealed class AHelpUIController: UIController, IOnSystemChanged<BwoinkSyst
    [Dependency] private readonly IPlayerManager _playerManager = default!;
    [Dependency] private readonly IClyde _clyde = default!;
    [Dependency] private readonly IUserInterfaceManager _uiManager = default!;
+    [UISystemDependency] private readonly AudioSystem _audio = default!;

    private BwoinkSystem? _bwoinkSystem;
    private MenuButton? GameAHelpButton => UIManager.GetActiveUIWidgetOrNull<GameTopMenuBar>()?.AHelpButton;
@@ -121,14 +124,14 @@ public sealed class AHelpUIController: UIController, IOnSystemChanged<BwoinkSyst
    private void ReceivedBwoink(object? sender, SharedBwoinkSystem.BwoinkTextMessage message)
    {
        Logger.InfoS("c.s.go.es.bwoink", $"@{message.UserId}: {message.Text}");
-        var localPlayer = _playerManager.LocalPlayer;
+        var localPlayer = _playerManager.LocalSession;
        if (localPlayer == null)
        {
            return;
        }
        if (localPlayer.UserId != message.TrueSender)
        {
-            SoundSystem.Play("/Audio/Effects/adminhelp.ogg", Filter.Local());
+            _audio.PlayGlobal("/Audio/Effects/adminhelp.ogg", Filter.Local(), false);
            _clyde.RequestWindowAttention();
        }

--- a/Content.Client/UserInterface/Systems/Chat/Widgets/ChatBox.xaml.cs
+++ b/Content.Client/UserInterface/Systems/Chat/Widgets/ChatBox.xaml.cs
@@ -1,7 +1,9 @@
 using Content.Client.UserInterface.Systems.Chat.Controls;
 using Content.Shared.Chat;
 using Content.Shared.Input;
+using Robust.Client.Audio;
 using Robust.Client.AutoGenerated;
+using Robust.Client.GameObjects;
 using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.XAML;
@@ -19,6 +21,7 @@ public partial class ChatBox : UIWidget
 #pragma warning restore RA0003
 {
    private readonly ChatUIController _controller;
+    private readonly IEntityManager _entManager;

    public bool Main { get; set; }

@@ -27,6 +30,7 @@ public partial class ChatBox : UIWidget
    public ChatBox()
    {
        RobustXamlLoader.Load(this);
+        _entManager = IoCManager.Resolve<IEntityManager>();

        ChatInput.Input.OnTextEntered += OnTextEntered;
        ChatInput.Input.OnKeyBindDown += OnKeyBindDown;
@@ -54,8 +58,8 @@ public partial class ChatBox : UIWidget
            return;
        }

-        if (msg is { Read: false, AudioPath: not null })
-            SoundSystem.Play(msg.AudioPath, Filter.Local(), new AudioParams().WithVolume(msg.AudioVolume));
+        if (msg is { Read: false, AudioPath: { } })
+            _entManager.System<AudioSystem>().PlayGlobal(msg.AudioPath, Filter.Local(), false, AudioParams.Default.WithVolume(msg.AudioVolume));

        msg.Read = true;

--- a/Content.Client/Voting/VoteManager.cs
+++ b/Content.Client/Voting/VoteManager.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using Content.Shared.Voting;
 using Robust.Client;
+using Robust.Client.Audio;
 using Robust.Client.Console;
 using Robust.Client.GameObjects;
 using Robust.Client.UserInterface;
--- a/Content.Client/Weapons/Ranged/Systems/FlyBySoundSystem.cs
+++ b/Content.Client/Weapons/Ranged/Systems/FlyBySoundSystem.cs
@@ -2,6 +2,8 @@ using Content.Shared.Projectiles;
 using Content.Shared.Weapons.Ranged.Components;
 using Content.Shared.Weapons.Ranged.Systems;
 using Robust.Client.Player;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Physics.Events;
 using Robust.Shared.Player;
 using Robust.Shared.Random;
--- a/Content.Client/Weather/WeatherSystem.cs
+++ b/Content.Client/Weather/WeatherSystem.cs
@@ -1,8 +1,11 @@
 using System.Numerics;
 using Content.Shared.Weather;
+using Robust.Client.Audio;
 using Robust.Client.GameObjects;
 using Robust.Client.Graphics;
 using Robust.Client.Player;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.GameStates;
 using Robust.Shared.Map;
 using Robust.Shared.Map.Components;
@@ -10,6 +13,7 @@ using Robust.Shared.Physics;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Systems;
 using Robust.Shared.Player;
+using AudioComponent = Robust.Shared.Audio.Components.AudioComponent;

 namespace Content.Client.Weather;

@@ -21,9 +25,6 @@ public sealed class WeatherSystem : SharedWeatherSystem
    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
    [Dependency] private readonly SharedTransformSystem _transform = default!;

-    private const float OcclusionLerpRate = 4f;
-    private const float AlphaLerpRate = 4f;
-
    public override void Initialize()
    {
        base.Initialize();
@@ -34,7 +35,7 @@ public sealed class WeatherSystem : SharedWeatherSystem
    {
        base.Run(uid, weather, weatherProto, frameTime);

-        var ent = _playerManager.LocalPlayer?.ControlledEntity;
+        var ent = _playerManager.LocalEntity;

        if (ent == null)
            return;
@@ -45,26 +46,18 @@ public sealed class WeatherSystem : SharedWeatherSystem
        // Maybe have the viewports manage this?
        if (mapUid == null || entXform.MapUid != mapUid)
        {
-            weather.LastOcclusion = 0f;
-            weather.LastAlpha = 0f;
-            weather.Stream?.Stop();
-            weather.Stream = null;
+            weather.Stream = _audio.Stop(weather.Stream);
            return;
        }

        if (!Timing.IsFirstTimePredicted || weatherProto.Sound == null)
            return;

-        weather.Stream ??= _audio.PlayGlobal(weatherProto.Sound, Filter.Local(), true);
-        var volumeMod = MathF.Pow(10, weatherProto.Sound.Params.Volume / 10f);
+        weather.Stream ??= _audio.PlayGlobal(weatherProto.Sound, Filter.Local(), true).Value.Entity;

-        var stream = (AudioSystem.PlayingStream) weather.Stream!;
-        var alpha = weather.LastAlpha;
-        alpha = MathF.Pow(alpha, 2f) * volumeMod;
-        // TODO: Lerp this occlusion.
+        var stream = weather.Stream.Value;
+        var comp = Comp<AudioComponent>(stream);
        var occlusion = 0f;
-        // TODO: Fade-out needs to be slower
-        // TODO: HELPER PLZ

        // Work out tiles nearby to determine volume.
        if (TryComp<MapGridComponent>(entXform.GridUid, out var grid))
@@ -76,8 +69,6 @@ public sealed class WeatherSystem : SharedWeatherSystem
            frontier.Enqueue(seed);
            // If we don't have a nearest node don't play any sound.
            EntityCoordinates? nearestNode = null;
-            var bodyQuery = GetEntityQuery<PhysicsComponent>();
-            var weatherIgnoreQuery = GetEntityQuery<IgnoreWeatherComponent>();
            var visited = new HashSet<Vector2i>();

            while (frontier.TryDequeue(out var node))
@@ -85,7 +76,7 @@ public sealed class WeatherSystem : SharedWeatherSystem
                if (!visited.Add(node.GridIndices))
                    continue;

-                if (!CanWeatherAffect(grid, node, weatherIgnoreQuery, bodyQuery))
+                if (!CanWeatherAffect(grid, node))
                {
                    // Add neighbors
                    // TODO: Ideally we pick some deterministically random direction and use that
@@ -109,50 +100,29 @@ public sealed class WeatherSystem : SharedWeatherSystem
                }

                nearestNode = new EntityCoordinates(entXform.GridUid.Value,
-                    (Vector2) node.GridIndices + (grid.TileSizeHalfVector));
+                    node.GridIndices + grid.TileSizeHalfVector);
                break;
            }

-            if (nearestNode == null)
-                alpha = 0f;
+            // Get occlusion to the targeted node if it exists, otherwise set a default occlusion.
+            if (nearestNode != null)
+            {
+                var entPos = _transform.GetMapCoordinates(entXform);
+                var nodePosition = nearestNode.Value.ToMap(EntityManager, _transform).Position;
+                var delta = nodePosition - entPos.Position;
+                var distance = delta.Length();
+                occlusion = _audio.GetOcclusion(entPos, delta, distance);
+            }
            else
            {
-                var entPos = _transform.GetWorldPosition(entXform);
-                var sourceRelative = nearestNode.Value.ToMap(EntityManager).Position - entPos;
-
-                if (sourceRelative.LengthSquared() > 1f)
-                {
-                    occlusion = _physics.IntersectRayPenetration(entXform.MapID,
-                        new CollisionRay(entPos, sourceRelative.Normalized(), _audio.OcclusionCollisionMask),
-                        sourceRelative.Length(), stream.TrackingEntity);
-                }
+                occlusion = 3f;
            }
        }

-        if (MathHelper.CloseTo(weather.LastOcclusion, occlusion, 0.01f))
-            weather.LastOcclusion = occlusion;
-        else
-            weather.LastOcclusion += (occlusion - weather.LastOcclusion) * OcclusionLerpRate * frameTime;
-
-        if (MathHelper.CloseTo(weather.LastAlpha, alpha, 0.01f))
-            weather.LastAlpha = alpha;
-        else
-            weather.LastAlpha += (alpha - weather.LastAlpha) * AlphaLerpRate * frameTime;
-
-        // Full volume if not on grid
-        stream.Source.SetVolumeDirect(weather.LastAlpha);
-        stream.Source.SetOcclusion(weather.LastOcclusion);
-    }
-
-    protected override void EndWeather(EntityUid uid, WeatherComponent component, string proto)
-    {
-        base.EndWeather(uid, component, proto);
-
-        if (!component.Weather.TryGetValue(proto, out var weather))
-            return;
-
-        weather.LastAlpha = 0f;
-        weather.LastOcclusion = 0f;
+        var alpha = GetPercent(weather, uid);
+        alpha *= SharedAudioSystem.VolumeToGain(weatherProto.Sound.Params.Volume);
+        _audio.SetGain(stream, alpha, comp);
+        comp.Occlusion = occlusion;
    }

    protected override bool SetState(WeatherState state, WeatherComponent comp, WeatherData weather, WeatherPrototype weatherProto)
@@ -164,9 +134,8 @@ public sealed class WeatherSystem : SharedWeatherSystem
            return true;

        // TODO: Fades (properly)
-        weather.Stream?.Stop();
-        weather.Stream = null;
-        weather.Stream = _audio.PlayGlobal(weatherProto.Sound, Filter.Local(), true);
+        weather.Stream = _audio.Stop(weather.Stream);
+        weather.Stream = _audio.PlayGlobal(weatherProto.Sound, Filter.Local(), true)?.Entity;
        return true;
    }

@@ -197,7 +166,6 @@ public sealed class WeatherSystem : SharedWeatherSystem

            // New weather
            StartWeather(component, ProtoMan.Index<WeatherPrototype>(proto), weather.EndTime);
-            weather.LastAlpha = 0f;
        }
    }
 }
--- a/Content.IntegrationTests/PoolManager.cs
+++ b/Content.IntegrationTests/PoolManager.cs
@@ -69,7 +69,6 @@ public static partial class PoolManager
        options.BeforeStart += () =>
        {
            var entSysMan = IoCManager.Resolve<IEntitySystemManager>();
-            var compFactory = IoCManager.Resolve<IComponentFactory>();
            entSysMan.LoadExtraSystemType<ResettingEntitySystemTests.TestRoundRestartCleanupEvent>();
            entSysMan.LoadExtraSystemType<InteractionSystemTests.TestInteractionSystem>();
            entSysMan.LoadExtraSystemType<DeviceNetworkTestSystem>();
--- a/Content.IntegrationTests/Tests/Destructible/DestructibleThresholdActivationTest.cs
+++ b/Content.IntegrationTests/Tests/Destructible/DestructibleThresholdActivationTest.cs
@@ -6,6 +6,8 @@ using Content.Server.Destructible.Thresholds.Triggers;
 using Content.Shared.Damage;
 using Content.Shared.Damage.Prototypes;
 using Content.Shared.FixedPoint;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Prototypes;
 using static Content.IntegrationTests.Tests.Destructible.DestructibleTestPrototypes;
--- a/Content.IntegrationTests/Tests/EntityTest.cs
+++ b/Content.IntegrationTests/Tests/EntityTest.cs
@@ -1,5 +1,6 @@
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using Content.Server.Humanoid.Components;
 using Content.Shared.Coordinates;
 using Content.Shared.Prototypes;
@@ -215,6 +216,7 @@ namespace Content.IntegrationTests.Tests
        {
            var settings = new PoolSettings { Connected = true, Dirty = true };
            await using var pair = await PoolManager.GetServerClient(settings);
+            var mapManager = pair.Server.ResolveDependency<IMapManager>();
            var server = pair.Server;
            var client = pair.Client;

@@ -244,16 +246,18 @@ namespace Content.IntegrationTests.Tests
                .Select(p => p.ID)
                .ToList();

-            MapCoordinates coords = default;
+            protoIds.Sort();
+            var mapId = MapId.Nullspace;
+
            await server.WaitPost(() =>
            {
-                var map = server.MapMan.CreateMap();
-                coords = new MapCoordinates(default, map);
+               mapId = mapManager.CreateMap();
            });

+            var coords = new MapCoordinates(Vector2.Zero, mapId);
+
            await pair.RunTicksSync(3);

-            List<string> badPrototypes = new();
            foreach (var protoId in protoIds)
            {
                // TODO fix ninja
@@ -270,27 +274,50 @@ namespace Content.IntegrationTests.Tests
                // If the entity deleted itself, check that it didn't spawn other entities
                if (!server.EntMan.EntityExists(uid))
                {
-                    if (server.EntMan.EntityCount != count || client.EntMan.EntityCount != clientCount)
-                        badPrototypes.Add(protoId);
+                    if (server.EntMan.EntityCount != count)
+                    {
+                        Assert.Fail($"Server prototype {protoId} failed on deleting itself");
+                    }
+
+                    if (client.EntMan.EntityCount != clientCount)
+                    {
+                        Assert.Fail($"Client prototype {protoId} failed on deleting itself\n" +
+                                    $"Expected {clientCount} and found {client.EntMan.EntityCount}.\n" +
+                                    $"Server was {count}.");
+                    }
                    continue;
                }

                // Check that the number of entities has increased.
-                if (server.EntMan.EntityCount <= count || client.EntMan.EntityCount <= clientCount)
+                if (server.EntMan.EntityCount <= count)
                {
-                    badPrototypes.Add(protoId);
-                    continue;
+                    Assert.Fail($"Server prototype {protoId} failed on spawning as entity count didn't increase");
+                }
+
+                if (client.EntMan.EntityCount <= clientCount)
+                {
+                    Assert.Fail($"Client prototype {protoId} failed on spawning as entity count didn't increase" +
+                                $"Expected at least {clientCount} and found {client.EntMan.EntityCount}. " +
+                                $"Server was {count}");
                }

                await server.WaitPost(() => server.EntMan.DeleteEntity(uid));
                await pair.RunTicksSync(3);

                // Check that the number of entities has gone back to the original value.
-                if (server.EntMan.EntityCount != count || client.EntMan.EntityCount != clientCount)
-                    badPrototypes.Add(protoId);
+                if (server.EntMan.EntityCount != count)
+                {
+                    Assert.Fail($"Server prototype {protoId} failed on deletion count didn't reset properly");
+                }
+
+                if (client.EntMan.EntityCount != clientCount)
+                {
+                    Assert.Fail($"Client prototype {protoId} failed on deletion count didn't reset properly:\n" +
+                                $"Expected {clientCount} and found {client.EntMan.EntityCount}.\n" +
+                                $"Server was {count}.");
+                }
            }

-            Assert.That(badPrototypes, Is.Empty);
            await pair.CleanReturnAsync();
        }

@@ -303,7 +330,7 @@ namespace Content.IntegrationTests.Tests
                "DebugExceptionExposeData",
                "DebugExceptionInitialize",
                "DebugExceptionStartup",
-                "GridFillComponent",
+                "GridFill",
                "Map", // We aren't testing a map entity in this test
                "MapGrid",
                "Broadphase",
--- a/Content.IntegrationTests/Tests/Interaction/InteractionTest.Helpers.cs
+++ b/Content.IntegrationTests/Tests/Interaction/InteractionTest.Helpers.cs
@@ -619,6 +619,9 @@ public abstract partial class InteractionTest
        {
            foreach (var (proto, quantity) in expected.Entities)
            {
+                if (proto == "Audio")
+                    continue;
+
                if (quantity < 0 && failOnExcess)
                    Assert.Fail($"Unexpected entity/stack: {proto}, quantity: {-quantity}");

--- a/Content.IntegrationTests/Tests/Interaction/InteractionTest.cs
+++ b/Content.IntegrationTests/Tests/Interaction/InteractionTest.cs
@@ -140,7 +140,7 @@ public abstract partial class InteractionTest
    [SetUp]
    public virtual async Task Setup()
    {
-        Pair = await PoolManager.GetServerClient(new PoolSettings { Connected = true });
+        Pair = await PoolManager.GetServerClient(new PoolSettings { Connected = true, Dirty = true});

        // server dependencies
        SEntMan = Server.ResolveDependency<IEntityManager>();
--- a/Content.IntegrationTests/Tests/PostMapInitTest.cs
+++ b/Content.IntegrationTests/Tests/PostMapInitTest.cs
@@ -68,6 +68,7 @@ namespace Content.IntegrationTests.Tests
            "Core",
            "Marathon",
            "Kettle",
+            "Gemini",
            "MeteorArena",
            "Atlas"
        };
--- a/Content.MapRenderer/Painters/DecalPainter.cs
+++ b/Content.MapRenderer/Painters/DecalPainter.cs
@@ -4,6 +4,7 @@ using System.IO;
 using Content.Shared.Decals;
 using Robust.Client.ResourceManagement;
 using Robust.Client.Utility;
+using Robust.Shared.ContentPack;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Timing;
 using Robust.Shared.Utility;
@@ -16,7 +17,7 @@ namespace Content.MapRenderer.Painters;

 public sealed class DecalPainter
 {
-    private readonly IResourceCache _cResourceCache;
+    private readonly IResourceManager _resManager;

    private readonly IPrototypeManager _sPrototypeManager;

@@ -24,7 +25,7 @@ public sealed class DecalPainter

    public DecalPainter(ClientIntegrationInstance client, ServerIntegrationInstance server)
    {
-        _cResourceCache = client.ResolveDependency<IResourceCache>();
+        _resManager = client.ResolveDependency<IResourceManager>();
        _sPrototypeManager = server.ResolveDependency<IPrototypeManager>();
    }

@@ -63,7 +64,7 @@ public sealed class DecalPainter
        Stream stream;
        if (sprite is SpriteSpecifier.Texture texture)
        {
-            stream = _cResourceCache.ContentFileRead(texture.TexturePath);
+            stream = _resManager.ContentFileRead(texture.TexturePath);
        }
        else if (sprite is SpriteSpecifier.Rsi rsi)
        {
@@ -73,7 +74,7 @@ public sealed class DecalPainter
                path = $"/Textures/{path}";
            }

-            stream = _cResourceCache.ContentFileRead(path);
+            stream = _resManager.ContentFileRead(path);
        }
        else
        {
--- a/Content.MapRenderer/Painters/EntityPainter.cs
+++ b/Content.MapRenderer/Painters/EntityPainter.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using Robust.Client.GameObjects;
 using Robust.Client.Graphics;
 using Robust.Client.ResourceManagement;
+using Robust.Shared.ContentPack;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Timing;
 using SixLabors.ImageSharp;
@@ -14,7 +15,7 @@ namespace Content.MapRenderer.Painters;

 public sealed class EntityPainter
 {
-    private readonly IResourceCache _cResourceCache;
+    private readonly IResourceManager _resManager;

    private readonly Dictionary<(string path, string state), Image> _images;
    private readonly Image _errorImage;
@@ -23,12 +24,12 @@ public sealed class EntityPainter

    public EntityPainter(ClientIntegrationInstance client, ServerIntegrationInstance server)
    {
-        _cResourceCache = client.ResolveDependency<IResourceCache>();
+        _resManager = client.ResolveDependency<IResourceManager>();

        _sEntityManager = server.ResolveDependency<IEntityManager>();

        _images = new Dictionary<(string path, string state), Image>();
-        _errorImage = Image.Load<Rgba32>(_cResourceCache.ContentFileRead("/Textures/error.rsi/error.png"));
+        _errorImage = Image.Load<Rgba32>(_resManager.ContentFileRead("/Textures/error.rsi/error.png"));
    }

    public void Run(Image canvas, List<EntityData> entities)
@@ -81,7 +82,7 @@ public sealed class EntityPainter

                if (!_images.TryGetValue(key, out image!))
                {
-                    var stream = _cResourceCache.ContentFileRead($"{rsi.Path}/{state.StateId}.png");
+                    var stream = _resManager.ContentFileRead($"{rsi.Path}/{state.StateId}.png");
                    image = Image.Load<Rgba32>(stream);

                    _images[key] = image;
--- a/Content.MapRenderer/Painters/TilePainter.cs
+++ b/Content.MapRenderer/Painters/TilePainter.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using Robust.Client.Graphics;
 using Robust.Client.ResourceManagement;
+using Robust.Shared.ContentPack;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Map;
 using Robust.Shared.Map.Components;
@@ -19,12 +20,12 @@ namespace Content.MapRenderer.Painters
        public const int TileImageSize = EyeManager.PixelsPerMeter;

        private readonly ITileDefinitionManager _sTileDefinitionManager;
-        private readonly IResourceCache _cResourceCache;
+        private readonly IResourceManager _resManager;

        public TilePainter(ClientIntegrationInstance client, ServerIntegrationInstance server)
        {
            _sTileDefinitionManager = server.ResolveDependency<ITileDefinitionManager>();
-            _cResourceCache = client.ResolveDependency<IResourceCache>();
+            _resManager = client.ResolveDependency<IResourceManager>();
        }

        public void Run(Image gridCanvas, EntityUid gridUid, MapGridComponent grid)
@@ -37,7 +38,7 @@ namespace Content.MapRenderer.Painters
            var yOffset = -bounds.Bottom;
            var tileSize = grid.TileSize * TileImageSize;

-            var images = GetTileImages(_sTileDefinitionManager, _cResourceCache, tileSize);
+            var images = GetTileImages(_sTileDefinitionManager, _resManager, tileSize);
            var i = 0;

            grid.GetAllTiles().AsParallel().ForAll(tile =>
@@ -61,7 +62,7 @@ namespace Content.MapRenderer.Painters

        private Dictionary<string, List<Image>> GetTileImages(
            ITileDefinitionManager tileDefinitionManager,
-            IResourceCache resourceCache,
+            IResourceManager resManager,
            int tileSize)
        {
            var stopwatch = new Stopwatch();
@@ -78,7 +79,7 @@ namespace Content.MapRenderer.Painters

                images[path] = new List<Image>(definition.Variants);

-                using var stream = resourceCache.ContentFileRead(path);
+                using var stream = resManager.ContentFileRead(path);
                Image tileSheet = Image.Load<Rgba32>(stream);

                if (tileSheet.Width != tileSize * definition.Variants || tileSheet.Height != tileSize)
--- a/Content.Packaging/Content.Packaging.csproj
+++ b/Content.Packaging/Content.Packaging.csproj
@@ -3,10 +3,11 @@
    <OutputType>Exe</OutputType>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
+    <ServerGarbageCollection>True</ServerGarbageCollection>
  </PropertyGroup>

  <ItemGroup>
-    <PackageReference Include="NVorbis" Version="0.10.1" PrivateAssets="compile" />
+    <PackageReference Include="NVorbis" Version="0.10.5" PrivateAssets="compile" />
  </ItemGroup>
  <ItemGroup>
    <ProjectReference Include="..\RobustToolbox\Robust.Packaging\Robust.Packaging.csproj" />
--- a/Content.Packaging/ServerPackaging.cs
+++ b/Content.Packaging/ServerPackaging.cs
@@ -1,15 +1,10 @@
 using System.Diagnostics;
-using System.Globalization;
 using System.IO.Compression;
 using Robust.Packaging;
 using Robust.Packaging.AssetProcessing;
 using Robust.Packaging.AssetProcessing.Passes;
 using Robust.Packaging.Utility;
-using Robust.Shared.Audio;
-using Robust.Shared.Serialization;
 using Robust.Shared.Timing;
-using YamlDotNet.Core;
-using YamlDotNet.RepresentationModel;

 namespace Content.Packaging;

@@ -197,7 +192,7 @@ public static class ServerPackaging
        bool hybridAcz,
        CancellationToken cancel)
    {
-        var graph = new RobustClientAssetGraph();
+        var graph = new RobustServerAssetGraph();
        var passes = graph.AllPasses.ToList();

        pass.Dependencies.Add(new AssetPassDependency(graph.Output.Name));
@@ -205,7 +200,8 @@ public static class ServerPackaging

        AssetGraph.CalculateGraph(passes, logger);

-        var inputPass = graph.Input;
+        var inputPassCore = graph.InputCore;
+        var inputPassResources = graph.InputResources;
        var contentAssemblies = new List<string>(ServerContentAssemblies);
        // Corvax-Secrets-Start
        if (UseSecrets)
@@ -232,26 +228,26 @@ public static class ServerPackaging
            Path.Combine("RobustToolbox", "bin", "Server",
            platform.Rid,
            "publish"),
-            inputPass,
+            inputPassCore,
            BinSkipFolders,
            cancel: cancel);

        await RobustSharedPackaging.WriteContentAssemblies(
-            inputPass,
+            inputPassResources,
            contentDir,
            "Content.Server",
            contentAssemblies,
-            Path.Combine("Resources", "Assemblies"),
-            cancel);
+            cancel: cancel);

-        await RobustServerPackaging.WriteServerResources(contentDir, inputPass, cancel);
+        await RobustServerPackaging.WriteServerResources(contentDir, inputPassResources, cancel);

        if (hybridAcz)
        {
-            inputPass.InjectFileFromDisk("Content.Client.zip", Path.Combine("release", "SS14.Client.zip"));
+            inputPassCore.InjectFileFromDisk("Content.Client.zip", Path.Combine("release", "SS14.Client.zip"));
        }

-        inputPass.InjectFinished();
+        inputPassCore.InjectFinished();
+        inputPassResources.InjectFinished();
    }

    private readonly record struct PlatformReg(string Rid, string TargetOs, bool BuildByDefault);
--- a/Content.Server/Access/Systems/AccessOverriderSystem.cs
+++ b/Content.Server/Access/Systems/AccessOverriderSystem.cs
@@ -8,6 +8,8 @@ using Content.Shared.DoAfter;
 using Content.Shared.Interaction;
 using JetBrains.Annotations;
 using Robust.Server.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Containers;
 using Robust.Shared.Player;
 using static Content.Shared.Access.Components.AccessOverriderComponent;
--- a/Content.Server/Administration/Commands/PlayGlobalSoundCommand.cs
+++ b/Content.Server/Administration/Commands/PlayGlobalSoundCommand.cs
@@ -6,7 +6,6 @@ using Robust.Shared.Audio;
 using Robust.Shared.Console;
 using Robust.Shared.ContentPack;
 using Robust.Shared.Player;
-using Robust.Shared.Prototypes;

 namespace Content.Server.Administration.Commands;

--- a/Content.Server/Administration/Systems/AdminSystem.cs
+++ b/Content.Server/Administration/Systems/AdminSystem.cs
@@ -27,6 +27,7 @@ using Content.Shared.Throwing;
 using Robust.Server.GameObjects;
 using Robust.Server.Player;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Enums;
 using Robust.Shared.Network;
@@ -40,7 +41,6 @@ namespace Content.Server.Administration.Systems
        [Dependency] private readonly IChatManager _chat = default!;
        [Dependency] private readonly IConfigurationManager _config = default!;
        [Dependency] private readonly IPlayerManager _playerManager = default!;
-        [Dependency] private readonly AudioSystem _audio = default!;
        [Dependency] private readonly HandsSystem _hands = default!;
        [Dependency] private readonly SharedJobSystem _jobs = default!;
        [Dependency] private readonly InventorySystem _inventory = default!;
@@ -50,6 +50,7 @@ namespace Content.Server.Administration.Systems
        [Dependency] private readonly PlayTimeTrackingManager _playTime = default!;
        [Dependency] private readonly SharedRoleSystem _role = default!;
        [Dependency] private readonly GameTicker _gameTicker = default!;
+        [Dependency] private readonly SharedAudioSystem _audio = default!;
        [Dependency] private readonly StationRecordsSystem _stationRecords = default!;
        [Dependency] private readonly TransformSystem _transform = default!;

@@ -350,7 +351,7 @@ namespace Content.Server.Administration.Systems
                    _popup.PopupCoordinates(Loc.GetString("admin-erase-popup", ("user", name)), coordinates, PopupType.LargeCaution);
                    var filter = Filter.Pvs(coordinates, 1, EntityManager, _playerManager);
                    var audioParams = new AudioParams().WithVolume(3);
-                    _audio.Play("/Audio/Effects/pop_high.ogg", filter, coordinates, true, audioParams);
+                    _audio.PlayStatic("/Audio/Effects/pop_high.ogg", filter, coordinates, true, audioParams);
                }

                foreach (var item in _inventory.GetHandOrInventoryEntities(entity.Value))
--- a/Content.Server/Administration/Systems/AdminVerbSystem.Antags.cs
+++ b/Content.Server/Administration/Systems/AdminVerbSystem.Antags.cs
@@ -20,7 +20,6 @@ public sealed partial class AdminVerbSystem
    [Dependency] private readonly PiratesRuleSystem _piratesRule = default!;
    [Dependency] private readonly RevolutionaryRuleSystem _revolutionaryRule = default!;
    [Dependency] private readonly SharedMindSystem _minds = default!;
-    [Dependency] private readonly GameTicker _gameTicker = default!;

    // All antag verbs have names so invokeverb works.
    private void AddAntagVerbs(GetVerbsEvent<Verb> args)
--- a/Content.Server/Administration/Systems/AdminVerbSystem.cs
+++ b/Content.Server/Administration/Systems/AdminVerbSystem.cs
@@ -5,10 +5,12 @@ using Content.Server.Administration.UI;
 using Content.Server.Disposal.Tube;
 using Content.Server.Disposal.Tube.Components;
 using Content.Server.EUI;
+using Content.Server.GameTicking;
 using Content.Server.Ghost.Roles;
 using Content.Server.Mind;
 using Content.Server.Mind.Commands;
 using Content.Server.Prayer;
+using Content.Server.Station.Systems;
 using Content.Server.Xenoarchaeology.XenoArtifacts;
 using Content.Server.Xenoarchaeology.XenoArtifacts.Triggers.Components;
 using Content.Shared.Administration;
@@ -50,6 +52,7 @@ namespace Content.Server.Administration.Systems
        [Dependency] private readonly AdminSystem _adminSystem = default!;
        [Dependency] private readonly DisposalTubeSystem _disposalTubes = default!;
        [Dependency] private readonly EuiManager _euiManager = default!;
+        [Dependency] private readonly GameTicker _ticker = default!;
        [Dependency] private readonly GhostRoleSystem _ghostRoleSystem = default!;
        [Dependency] private readonly ArtifactSystem _artifactSystem = default!;
        [Dependency] private readonly UserInterfaceSystem _uiSystem = default!;
@@ -59,6 +62,8 @@ namespace Content.Server.Administration.Systems
        [Dependency] private readonly ToolshedManager _toolshed = default!;
        [Dependency] private readonly RejuvenateSystem _rejuvenate = default!;
        [Dependency] private readonly SharedPopupSystem _popup = default!;
+        [Dependency] private readonly StationSystem _stations = default!;
+        [Dependency] private readonly StationSpawningSystem _spawning = default!;

        private readonly Dictionary<ICommonSession, EditSolutionsEui> _openSolutionUis = new();

@@ -156,6 +161,69 @@ namespace Content.Server.Administration.Systems
                        Impact = LogImpact.Extreme,
                        ConfirmationPopup = true
                    });
+
+                // Respawn
+                    args.Verbs.Add(new Verb()
+                    {
+                        Text = Loc.GetString("admin-player-actions-respawn"),
+                        Category = VerbCategory.Admin,
+                        Act = () =>
+                        {
+                            _console.ExecuteCommand(player, $"respawn {targetActor.PlayerSession.Name}");
+                        },
+                        ConfirmationPopup = true,
+                        // No logimpact as the command does it internally.
+                    });
+
+                    // Spawn - Like respawn but on the spot.
+                    args.Verbs.Add(new Verb()
+                    {
+                        Text = Loc.GetString("admin-player-actions-spawn"),
+                        Category = VerbCategory.Admin,
+                        Act = () =>
+                        {
+                            if (!_transformSystem.TryGetMapOrGridCoordinates(args.Target, out var coords))
+                            {
+                                _popup.PopupEntity(Loc.GetString("admin-player-spawn-failed"), args.User, args.User);
+                                return;
+                            }
+
+                            var stationUid = _stations.GetOwningStation(args.Target);
+
+                            var profile = _ticker.GetPlayerProfile(targetActor.PlayerSession);
+                            var mobUid = _spawning.SpawnPlayerMob(coords.Value, null, profile, stationUid);
+                            var targetMind = _mindSystem.GetMind(args.Target);
+
+                            if (targetMind != null)
+                            {
+                                _mindSystem.TransferTo(targetMind.Value, mobUid);
+                            }
+                        },
+                        ConfirmationPopup = true,
+                        Impact = LogImpact.High,
+                    });
+
+                    // Clone - Spawn but without the mind transfer, also spawns at the user's coordinates not the target's
+                    args.Verbs.Add(new Verb()
+                    {
+                        Text = Loc.GetString("admin-player-actions-clone"),
+                        Category = VerbCategory.Admin,
+                        Act = () =>
+                        {
+                            if (!_transformSystem.TryGetMapOrGridCoordinates(args.User, out var coords))
+                            {
+                                _popup.PopupEntity(Loc.GetString("admin-player-spawn-failed"), args.User, args.User);
+                                return;
+                            }
+
+                            var stationUid = _stations.GetOwningStation(args.Target);
+
+                            var profile = _ticker.GetPlayerProfile(targetActor.PlayerSession);
+                            _spawning.SpawnPlayerMob(coords.Value, null, profile, stationUid);
+                        },
+                        ConfirmationPopup = true,
+                        Impact = LogImpact.High,
+                    });
                }

                // Admin Logs
@@ -211,21 +279,6 @@ namespace Content.Server.Administration.Systems
                    Impact = LogImpact.Low
                });

-                // Respawn
-                if (HasComp<ActorComponent>(args.Target))
-                {
-                    args.Verbs.Add(new Verb()
-                    {
-                        Text = Loc.GetString("admin-player-actions-respawn"),
-                        Category = VerbCategory.Admin,
-                        Act = () =>
-                        {
-                            _console.ExecuteCommand(player, $"respawn {actor.PlayerSession.Name}");
-                        },
-                        ConfirmationPopup = true,
-                        // No logimpact as the command does it internally.
-                    });
-                }
            }
        }

--- a/Content.Server/AlertLevel/AlertLevelSystem.cs
+++ b/Content.Server/AlertLevel/AlertLevelSystem.cs
@@ -3,6 +3,7 @@ using Content.Server.Chat.Systems;
 using Content.Server.Station.Systems;
 using Content.Shared.CCVar;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Prototypes;

@@ -10,10 +11,11 @@ namespace Content.Server.AlertLevel;

 public sealed class AlertLevelSystem : EntitySystem
 {
+    [Dependency] private readonly IConfigurationManager _cfg = default!;
    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
    [Dependency] private readonly ChatSystem _chatSystem = default!;
+    [Dependency] private readonly SharedAudioSystem _audio = default!;
    [Dependency] private readonly StationSystem _stationSystem = default!;
-    [Dependency] private readonly IConfigurationManager _cfg = default!;

    // Until stations are a prototype, this is how it's going to have to be.
    public const string DefaultAlertLevelSet = "stationAlerts";
@@ -174,7 +176,7 @@ public sealed class AlertLevelSystem : EntitySystem
            if (detail.Sound != null)
            {
                var filter = _stationSystem.GetInOwningStation(station);
-                SoundSystem.Play(detail.Sound.GetSound(), filter, detail.Sound.Params);
+                _audio.PlayGlobal(detail.Sound.GetSound(), filter, true, detail.Sound.Params);
            }
            else
            {
--- a/Content.Server/Ame/EntitySystems/AmeControllerSystem.cs
+++ b/Content.Server/Ame/EntitySystems/AmeControllerSystem.cs
@@ -16,6 +16,7 @@ using Content.Shared.Popups;
 using Robust.Server.Containers;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Containers;
 using Robust.Shared.Player;
 using Robust.Shared.Timing;
--- a/Content.Server/Ame/EntitySystems/AmePartSystem.cs
+++ b/Content.Server/Ame/EntitySystems/AmePartSystem.cs
@@ -6,6 +6,8 @@ using Content.Server.Tools;
 using Content.Shared.Database;
 using Content.Shared.Hands.Components;
 using Content.Shared.Interaction;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Map;

 namespace Content.Server.Ame.EntitySystems;
--- a/Content.Server/Animals/Systems/EggLayerSystem.cs
+++ b/Content.Server/Animals/Systems/EggLayerSystem.cs
@@ -5,6 +5,7 @@ using Content.Shared.Actions.Events;
 using Content.Shared.Nutrition.Components;
 using Content.Shared.Nutrition.EntitySystems;
 using Content.Shared.Storage;
+using Robust.Server.Audio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Player;
 using Robust.Shared.Random;
--- a/Content.Server/Anomaly/AnomalySynchronizerSystem.cs
+++ b/Content.Server/Anomaly/AnomalySynchronizerSystem.cs
@@ -1,10 +1,14 @@
+using System.Linq;
 using Content.Server.Anomaly.Components;
 using Content.Server.DeviceLinking.Systems;
 using Content.Server.Power.Components;
 using Content.Server.Power.EntitySystems;
 using Content.Shared.Anomaly.Components;
+using Content.Shared.Examine;
 using Content.Shared.Interaction;
 using Content.Shared.Popups;
+using Robust.Shared.Audio.Systems;
+using Content.Shared.Verbs;

 namespace Content.Server.Anomaly;

@@ -21,86 +25,129 @@ public sealed partial class AnomalySynchronizerSystem : EntitySystem
    [Dependency] private readonly SharedPopupSystem _popup = default!;
    [Dependency] private readonly PowerReceiverSystem _power = default!;

+    private const float AttachRange = 0.15f; // The radius of one tile. It must not be set higher, otherwise the anomaly can be moved from tile to tile.
+
    public override void Initialize()
    {
        base.Initialize();

        SubscribeLocalEvent<AnomalySynchronizerComponent, InteractHandEvent>(OnInteractHand);
        SubscribeLocalEvent<AnomalySynchronizerComponent, PowerChangedEvent>(OnPowerChanged);
+        SubscribeLocalEvent<AnomalySynchronizerComponent, ExaminedEvent>(OnExamined);
+        SubscribeLocalEvent<AnomalySynchronizerComponent, GetVerbsEvent<InteractionVerb>>(OnGetInteractionVerbs);

        SubscribeLocalEvent<AnomalyPulseEvent>(OnAnomalyPulse);
        SubscribeLocalEvent<AnomalySeverityChangedEvent>(OnAnomalySeverityChanged);
        SubscribeLocalEvent<AnomalyStabilityChangedEvent>(OnAnomalyStabilityChanged);
    }

-    private void OnPowerChanged(EntityUid uid, AnomalySynchronizerComponent component, ref PowerChangedEvent args)
+    /// <summary>
+    /// If powered, try to attach a nearby anomaly.
+    /// </summary>
+    public bool TryAttachNearbyAnomaly(Entity<AnomalySynchronizerComponent> ent, EntityUid? user = null)
+    {
+        if (!_power.IsPowered(ent))
+        {
+            if (user is not null)
+                _popup.PopupEntity(Loc.GetString("base-computer-ui-component-not-powered", ("machine", ent)), ent, user.Value);
+
+            return false;
+        }
+
+        var coords = _transform.GetMapCoordinates(ent);
+        var anomaly = _entityLookup.GetEntitiesInRange<AnomalyComponent>(coords, AttachRange).FirstOrDefault();
+
+        if (anomaly.Owner is {Valid: false}) // no anomaly in range
+        {
+            if (user is not null)
+                _popup.PopupEntity(Loc.GetString("anomaly-sync-no-anomaly"), ent, user.Value);
+
+            return false;
+        }
+
+        ConnectToAnomaly(ent, anomaly);
+        return true;
+    }
+
+    private void OnPowerChanged(Entity<AnomalySynchronizerComponent> ent, ref PowerChangedEvent args)
    {
        if (args.Powered)
            return;

-        if (!TryComp<AnomalyComponent>(component.ConnectedAnomaly, out var anomaly))
+        if (!TryComp<AnomalyComponent>(ent.Comp.ConnectedAnomaly, out var anomaly))
            return;

-        _anomaly.DoAnomalyPulse(component.ConnectedAnomaly.Value, anomaly);
-        DisconneсtFromAnomaly(uid, component, anomaly);
+        _anomaly.DoAnomalyPulse(ent.Comp.ConnectedAnomaly.Value, anomaly);
+        DisconneсtFromAnomaly(ent, anomaly);
    }

-    private void OnInteractHand(EntityUid uid, AnomalySynchronizerComponent component, InteractHandEvent args)
+    private void OnExamined(Entity<AnomalySynchronizerComponent> ent, ref ExaminedEvent args)
    {
-        if (!_power.IsPowered(uid))
-            return;
-
-        foreach (var entity in _entityLookup.GetEntitiesInRange(uid, 0.15f)) //is the radius of one tile. It must not be set higher, otherwise the anomaly can be moved from tile to tile
-        {
-            if (!TryComp<AnomalyComponent>(entity, out var anomaly))
-                continue;
-
-
-            ConnectToAnomaly(uid, component, entity, anomaly);
-            break;
-        }
+        args.PushMarkup(Loc.GetString(ent.Comp.ConnectedAnomaly.HasValue ? "anomaly-sync-examine-connected" : "anomaly-sync-examine-not-connected"));
    }

-    private void ConnectToAnomaly(EntityUid uid, AnomalySynchronizerComponent component, EntityUid auid, AnomalyComponent anomaly)
+    private void OnGetInteractionVerbs(Entity<AnomalySynchronizerComponent> ent, ref GetVerbsEvent<InteractionVerb> args)
    {
-        if (component.ConnectedAnomaly == auid)
+        if (!args.CanAccess || !args.CanInteract || args.Hands is null || ent.Comp.ConnectedAnomaly.HasValue)
            return;

-        component.ConnectedAnomaly = auid;
+        var user = args.User;
+        args.Verbs.Add(new() {
+            Act = () =>
+            {
+                TryAttachNearbyAnomaly(ent, user);
+            },
+            Message = Loc.GetString("anomaly-sync-connect-verb-message", ("machine", ent)),
+            Text = Loc.GetString("anomaly-sync-connect-verb-text"),
+        });
+    }
+
+    private void OnInteractHand(Entity<AnomalySynchronizerComponent> ent, ref InteractHandEvent args)
+    {
+        TryAttachNearbyAnomaly(ent, args.User);
+    }
+
+    private void ConnectToAnomaly(Entity<AnomalySynchronizerComponent> ent, Entity<AnomalyComponent> anomaly)
+    {
+        if (ent.Comp.ConnectedAnomaly == anomaly)
+            return;
+
+        ent.Comp.ConnectedAnomaly = anomaly;
        //move the anomaly to the center of the synchronizer, for aesthetics.
-        var targetXform = _transform.GetWorldPosition(uid);
-        _transform.SetWorldPosition(auid, targetXform);
+        var targetXform = _transform.GetWorldPosition(ent);
+        _transform.SetWorldPosition(anomaly, targetXform);

-        _anomaly.DoAnomalyPulse(component.ConnectedAnomaly.Value, anomaly);
-        _popup.PopupEntity(Loc.GetString("anomaly-sync-connected"), uid, PopupType.Medium);
-        _audio.PlayPvs(component.ConnectedSound, uid);
+        _anomaly.DoAnomalyPulse(anomaly, anomaly);
+        _popup.PopupEntity(Loc.GetString("anomaly-sync-connected"), ent, PopupType.Medium);
+        _audio.PlayPvs(ent.Comp.ConnectedSound, ent);
    }

    //TO DO: disconnection from the anomaly should also be triggered if the anomaly is far away from the synchronizer.
    //Currently only bluespace anomaly can do this, but for some reason it is the only one that cannot be connected to the synchronizer.
-    private void DisconneсtFromAnomaly(EntityUid uid, AnomalySynchronizerComponent component, AnomalyComponent anomaly)
+    private void DisconneсtFromAnomaly(Entity<AnomalySynchronizerComponent> ent, AnomalyComponent anomaly)
    {
-        if (component.ConnectedAnomaly == null)
+        if (ent.Comp.ConnectedAnomaly == null)
            return;

-        _anomaly.DoAnomalyPulse(component.ConnectedAnomaly.Value, anomaly);
-        _popup.PopupEntity(Loc.GetString("anomaly-sync-disconnected"), uid, PopupType.Large);
-        _audio.PlayPvs(component.ConnectedSound, uid);
+        _anomaly.DoAnomalyPulse(ent.Comp.ConnectedAnomaly.Value, anomaly);
+        _popup.PopupEntity(Loc.GetString("anomaly-sync-disconnected"), ent, PopupType.Large);
+        _audio.PlayPvs(ent.Comp.ConnectedSound, ent);

-        component.ConnectedAnomaly = default!;
+        ent.Comp.ConnectedAnomaly = null;
    }

    private void OnAnomalyPulse(ref AnomalyPulseEvent args)
    {
        var query = EntityQueryEnumerator<AnomalySynchronizerComponent>();
-        while (query.MoveNext(out var ent, out var component))
+        while (query.MoveNext(out var uid, out var component))
        {
            if (args.Anomaly != component.ConnectedAnomaly)
                continue;
-            if (!_power.IsPowered(ent))
+
+            if (!_power.IsPowered(uid))
                continue;

-            _signal.InvokePort(ent, component.PulsePort);
+            _signal.InvokePort(uid, component.PulsePort);
        }
    }

@@ -111,8 +158,10 @@ public sealed partial class AnomalySynchronizerSystem : EntitySystem
        {
            if (args.Anomaly != component.ConnectedAnomaly)
                continue;
+
            if (!_power.IsPowered(ent))
                continue;
+
            //The superscritical port is invoked not at the AnomalySupercriticalEvent,
            //but at the moment the growth animation starts. Otherwise, there is no point in this port.
            //ATTENTION! the console command supercriticalanomaly does not work here,
@@ -121,21 +170,25 @@ public sealed partial class AnomalySynchronizerSystem : EntitySystem
                _signal.InvokePort(ent, component.SupercritPort);
        }
    }
+
    private void OnAnomalyStabilityChanged(ref AnomalyStabilityChangedEvent args)
    {
+        Entity<AnomalyComponent> anomaly = (args.Anomaly, Comp<AnomalyComponent>(args.Anomaly));
+
        var query = EntityQueryEnumerator<AnomalySynchronizerComponent>();
        while (query.MoveNext(out var ent, out var component))
        {
-            if (args.Anomaly != component.ConnectedAnomaly)
-                continue;
-            if (TryComp<ApcPowerReceiverComponent>(ent, out var apcPower) && !apcPower.Powered)
+            if (component.ConnectedAnomaly != anomaly)
                continue;

-            if (args.Stability < 0.25f) //I couldn't find where these values are stored, so I hardcoded them. Tell me where these variables are stored and I'll fix it
+            if (!_power.IsPowered(ent))
+                continue;
+
+            if (args.Stability < anomaly.Comp.DecayThreshold)
            {
                _signal.InvokePort(ent, component.DecayingPort);
            }
-            else if (args.Stability > 0.5f) //I couldn't find where these values are stored, so I hardcoded them. Tell me where these variables are stored and I'll fix it
+            else if (args.Stability > anomaly.Comp.GrowthThreshold)
            {
                _signal.InvokePort(ent, component.GrowingPort);
            }
--- a/Content.Server/Anomaly/AnomalySystem.Generator.cs
+++ b/Content.Server/Anomaly/AnomalySystem.Generator.cs
@@ -81,7 +81,7 @@ public sealed partial class AnomalySystem

        var generating = EnsureComp<GeneratingAnomalyGeneratorComponent>(uid);
        generating.EndTime = Timing.CurTime + component.GenerationLength;
-        generating.AudioStream = Audio.PlayPvs(component.GeneratingSound, uid, AudioParams.Default.WithLoop(true));
+        generating.AudioStream = Audio.PlayPvs(component.GeneratingSound, uid, AudioParams.Default.WithLoop(true))?.Entity;
        component.CooldownEndTime = Timing.CurTime + component.CooldownLength;
        UpdateGeneratorUi(uid, component);
    }
@@ -174,7 +174,8 @@ public sealed partial class AnomalySystem
        {
            if (Timing.CurTime < active.EndTime)
                continue;
-            active.AudioStream?.Stop();
+
+            active.AudioStream = _audio.Stop(active.AudioStream);
            OnGeneratingFinished(ent, gen);
        }
    }
--- a/Content.Server/Anomaly/AnomalySystem.Scanner.cs
+++ b/Content.Server/Anomaly/AnomalySystem.Scanner.cs
@@ -78,6 +78,8 @@ public sealed partial class AnomalySystem
            return;
        if (!HasComp<AnomalyComponent>(target))
            return;
+        if (!args.CanReach)
+            return;

        _doAfter.TryStartDoAfter(new DoAfterArgs(EntityManager, args.User, component.ScanDoAfterDuration, new ScannerDoAfterEvent(), uid, target: target, used: uid)
        {
--- a/Content.Server/Anomaly/AnomalySystem.cs
+++ b/Content.Server/Anomaly/AnomalySystem.cs
@@ -9,6 +9,8 @@ using Content.Shared.Anomaly;
 using Content.Shared.Anomaly.Components;
 using Content.Shared.DoAfter;
 using Robust.Server.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Physics.Events;
 using Robust.Shared.Prototypes;
@@ -31,6 +33,7 @@ public sealed partial class AnomalySystem : SharedAnomalySystem
    [Dependency] private readonly SharedPointLightSystem _pointLight = default!;
    [Dependency] private readonly StationSystem _station = default!;
    [Dependency] private readonly RadioSystem _radio = default!;
+    [Dependency] private readonly SharedAudioSystem _audio = default!;
    [Dependency] private readonly UserInterfaceSystem _ui = default!;

    public const float MinParticleVariation = 0.8f;
--- a/Content.Server/Anomaly/Components/GeneratingAnomalyGeneratorComponent.cs
+++ b/Content.Server/Anomaly/Components/GeneratingAnomalyGeneratorComponent.cs
@@ -13,5 +13,5 @@ public sealed partial class GeneratingAnomalyGeneratorComponent : Component
    [DataField("endTime", customTypeSerializer: typeof(TimeOffsetSerializer))]
    public TimeSpan EndTime = TimeSpan.Zero;

-    public IPlayingAudioStream? AudioStream;
+    public EntityUid? AudioStream;
 }
--- a/Content.Server/Anomaly/Effects/BluespaceAnomalySystem.cs
+++ b/Content.Server/Anomaly/Effects/BluespaceAnomalySystem.cs
@@ -4,6 +4,8 @@ using Content.Server.Anomaly.Components;
 using Content.Shared.Anomaly.Components;
 using Content.Shared.Mobs.Components;
 using Content.Shared.Teleportation.Components;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Random;

 namespace Content.Server.Anomaly.Effects;
--- a/Content.Server/Anomaly/Effects/GasProducerAnomalySystem.cs
+++ b/Content.Server/Anomaly/Effects/GasProducerAnomalySystem.cs
@@ -65,7 +65,7 @@ public sealed class GasProducerAnomalySystem : EntitySystem
        if (tilerefs.Length == 0)
            return;

-        var mixture = _atmosphere.GetTileMixture(xform.GridUid, xform.MapUid, _xform.GetGridOrMapTilePosition(uid, xform), true);
+        var mixture = _atmosphere.GetTileMixture((uid, xform), grid, true);
        if (mixture != null)
        {
            mixture.AdjustMoles(gas, mols);
--- a/Content.Server/Anomaly/Effects/ReagentProducerAnomalySystem.cs
+++ b/Content.Server/Anomaly/Effects/ReagentProducerAnomalySystem.cs
@@ -6,6 +6,7 @@ using Content.Shared.Chemistry.EntitySystems;
 using Robust.Shared.Prototypes;
 using Content.Shared.Sprite;
 using Robust.Server.GameObjects;
+using Robust.Shared.Audio.Systems;

 namespace Content.Server.Anomaly.Effects;

@@ -75,7 +76,7 @@ public sealed class ReagentProducerAnomalySystem : EntitySystem
            if (anomaly.Severity >= 0.97) reagentProducingAmount *= component.SupercriticalReagentProducingModifier;

            newSol.AddReagent(component.ProducingReagent, reagentProducingAmount);
-            _solutionContainer.TryAddSolution(uid, producerSol, newSol); //TO DO - the container is not fully filled. 
+            _solutionContainer.TryAddSolution(uid, producerSol, newSol); //TO DO - the container is not fully filled.

            component.AccumulatedFrametime = 0;

--- a/Content.Server/Anomaly/Effects/TempAffectingAnomalySystem.cs
+++ b/Content.Server/Anomaly/Effects/TempAffectingAnomalySystem.cs
@@ -22,7 +22,7 @@ public sealed class TempAffectingAnomalySystem : EntitySystem
        {
            var grid = xform.GridUid;
            var map = xform.MapUid;
-            var indices = _xform.GetGridOrMapTilePosition(ent, xform);
+            var indices = _xform.GetGridTilePositionOrDefault((ent, xform));
            var mixture = _atmosphere.GetTileMixture(grid, map, indices, true);

            if (mixture is { })
--- a/Content.Server/Antag/AntagSelectionSystem.cs
+++ b/Content.Server/Antag/AntagSelectionSystem.cs
@@ -21,6 +21,7 @@ using Content.Shared.Mobs.Components;
 using Content.Server.Station.Systems;
 using Content.Server.Shuttles.Systems;
 using Content.Shared.Mobs;
+using Robust.Server.Audio;
 using Robust.Server.Containers;
 using Robust.Shared.Player;
 using Robust.Shared.Prototypes;
--- a/Content.Server/Arcade/SpaceVillainGame/SpaceVillainArcadeSystem.cs
+++ b/Content.Server/Arcade/SpaceVillainGame/SpaceVillainArcadeSystem.cs
@@ -3,6 +3,7 @@ using Content.Server.UserInterface;
 using static Content.Shared.Arcade.SharedSpaceVillainArcadeComponent;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Random;

 namespace Content.Server.Arcade.SpaceVillain;
--- a/Content.Server/Arcade/SpaceVillainGame/SpaceVillainGame.cs
+++ b/Content.Server/Arcade/SpaceVillainGame/SpaceVillainGame.cs
@@ -1,6 +1,7 @@
 using static Content.Shared.Arcade.SharedSpaceVillainArcadeComponent;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Random;

 namespace Content.Server.Arcade.SpaceVillain;
--- a/Content.Server/Atmos/Components/GasTankComponent.cs
+++ b/Content.Server/Atmos/Components/GasTankComponent.cs
@@ -30,8 +30,8 @@ namespace Content.Server.Atmos.Components

        // Cancel toggles sounds if we re-toggle again.

-        public IPlayingAudioStream? ConnectStream;
-        public IPlayingAudioStream? DisconnectStream;
+        public EntityUid? ConnectStream;
+        public EntityUid? DisconnectStream;

        [DataField("air"), ViewVariables(VVAccess.ReadWrite)]
        public GasMixture Air { get; set; } = new();
--- a/Content.Server/Atmos/EntitySystems/AtmosphereSystem.API.cs
+++ b/Content.Server/Atmos/EntitySystems/AtmosphereSystem.API.cs
@@ -127,9 +127,18 @@ public partial class AtmosphereSystem
        return ev.Mixtures;
    }

-    public GasMixture? GetTileMixture(EntityUid? gridUid, EntityUid? mapUid, Vector2i tile, bool excite = false)
+    public GasMixture? GetTileMixture (Entity<TransformComponent?> entity, MapGridComponent? grid = null, bool excite = false)
    {
-        var ev = new GetTileMixtureMethodEvent(gridUid, mapUid, tile, excite);
+        if (!Resolve(entity.Owner, ref entity.Comp))
+            return null;
+
+        var indices = _transformSystem.GetGridTilePositionOrDefault(entity);
+        return GetTileMixture(entity.Comp.GridUid, entity.Comp.MapUid, indices, excite);
+    }
+
+    public GasMixture? GetTileMixture(EntityUid? gridUid, EntityUid? mapUid, Vector2i gridTile, bool excite = false)
+    {
+        var ev = new GetTileMixtureMethodEvent(gridUid, mapUid, gridTile, excite);

        // If we've been passed a grid, try to let it handle it.
        if(gridUid.HasValue)
--- a/Content.Server/Atmos/EntitySystems/AtmosphereSystem.HighPressureDelta.cs
+++ b/Content.Server/Atmos/EntitySystems/AtmosphereSystem.HighPressureDelta.cs
@@ -101,8 +101,7 @@ namespace Content.Server.Atmos.EntitySystems
                if(_spaceWindSoundCooldown == 0 && !string.IsNullOrEmpty(SpaceWindSound))
                {
                    var coordinates = tile.GridIndices.ToEntityCoordinates(tile.GridIndex, _mapManager);
-                    SoundSystem.Play(SpaceWindSound, Filter.Pvs(coordinates),
-                        coordinates, AudioHelpers.WithVariation(0.125f).WithVolume(MathHelper.Clamp(tile.PressureDifference / 10, 10, 100)));
+                    _audio.PlayPvs(SpaceWindSound, coordinates, AudioParams.Default.WithVariation(0.125f).WithVolume(MathHelper.Clamp(tile.PressureDifference / 10, 10, 100)));
                }
            }

--- a/Content.Server/Atmos/EntitySystems/AtmosphereSystem.Hotspot.cs
+++ b/Content.Server/Atmos/EntitySystems/AtmosphereSystem.Hotspot.cs
@@ -85,8 +85,7 @@ namespace Content.Server.Atmos.EntitySystems
                // A few details on the audio parameters for fire.
                // The greater the fire state, the lesser the pitch variation.
                // The greater the fire state, the greater the volume.
-                SoundSystem.Play(HotspotSound, Filter.Pvs(coordinates),
-                    coordinates, AudioHelpers.WithVariation(0.15f/tile.Hotspot.State).WithVolume(-5f + 5f * tile.Hotspot.State));
+                _audio.PlayPvs(HotspotSound, coordinates, AudioParams.Default.WithVariation(0.15f/tile.Hotspot.State).WithVolume(-5f + 5f * tile.Hotspot.State));
            }

            if (_hotspotSoundCooldown > HotspotSoundCooldownCycles)
--- a/Content.Server/Atmos/EntitySystems/AtmosphereSystem.cs
+++ b/Content.Server/Atmos/EntitySystems/AtmosphereSystem.cs
@@ -7,6 +7,8 @@ using Content.Shared.Atmos.EntitySystems;
 using Content.Shared.Maps;
 using JetBrains.Annotations;
 using Robust.Server.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Containers;
 using Robust.Shared.Map;
 using Robust.Shared.Physics.Systems;
@@ -28,6 +30,7 @@ public sealed partial class AtmosphereSystem : SharedAtmosphereSystem
    [Dependency] private readonly SharedContainerSystem _containers = default!;
    [Dependency] private readonly SharedPhysicsSystem _physics = default!;
    [Dependency] private readonly GasTileOverlaySystem _gasTileOverlaySystem = default!;
+    [Dependency] private readonly SharedAudioSystem _audio = default!;
    [Dependency] private readonly TransformSystem _transformSystem = default!;
    [Dependency] private readonly TileSystem _tile = default!;

--- a/Content.Server/Atmos/EntitySystems/FlammableSystem.cs
+++ b/Content.Server/Atmos/EntitySystems/FlammableSystem.cs
@@ -20,6 +20,7 @@ using Content.Shared.Throwing;
 using Content.Shared.Timing;
 using Content.Shared.Toggleable;
 using Content.Shared.Weapons.Melee.Events;
+using Robust.Server.Audio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Physics.Components;
 using Robust.Shared.Physics.Events;
--- a/Content.Server/Atmos/EntitySystems/GasTankSystem.cs
+++ b/Content.Server/Atmos/EntitySystems/GasTankSystem.cs
@@ -13,6 +13,7 @@ using Content.Shared.Verbs;
 using JetBrains.Annotations;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Containers;
 using Robust.Shared.Physics.Systems;
 using Robust.Shared.Player;
@@ -239,10 +240,8 @@ namespace Content.Server.Atmos.EntitySystems
            if (!component.IsConnected)
                return;

-            component.ConnectStream?.Stop();
-
-            if (component.ConnectSound != null)
-                component.ConnectStream = _audioSys.PlayPvs(component.ConnectSound, owner);
+            component.ConnectStream = _audioSys.Stop(component.ConnectStream);
+            component.ConnectStream = _audioSys.PlayPvs(component.ConnectSound, component.Owner)?.Entity;

            UpdateUserInterface(ent);
        }
@@ -259,10 +258,8 @@ namespace Content.Server.Atmos.EntitySystems
            _actions.SetToggled(component.ToggleActionEntity, false);

            _internals.DisconnectTank(internals);
-            component.DisconnectStream?.Stop();
-
-            if (component.DisconnectSound != null)
-                component.DisconnectStream = _audioSys.PlayPvs(component.DisconnectSound, owner);
+            component.DisconnectStream = _audioSys.Stop(component.DisconnectStream);
+            component.DisconnectStream = _audioSys.PlayPvs(component.DisconnectSound, component.Owner)?.Entity;

            UpdateUserInterface(ent);
        }
@@ -322,7 +319,7 @@ namespace Content.Server.Atmos.EntitySystems
                    if(environment != null)
                        _atmosphereSystem.Merge(environment, component.Air);

-                    _audioSys.Play(component.RuptureSound, Filter.Pvs(owner), Transform(owner).Coordinates, true, AudioParams.Default.WithVariation(0.125f));
+                    _audioSys.PlayPvs(component.RuptureSound, Transform(component.Owner).Coordinates, AudioParams.Default.WithVariation(0.125f));

                    QueueDel(owner);
                    return;
--- a/Content.Server/Atmos/EntitySystems/GasTileOverlaySystem.cs
+++ b/Content.Server/Atmos/EntitySystems/GasTileOverlaySystem.cs
@@ -36,6 +36,12 @@ namespace Content.Server.Atmos.EntitySystems
        [Robust.Shared.IoC.Dependency] private readonly AtmosphereSystem _atmosphereSystem = default!;
        [Robust.Shared.IoC.Dependency] private readonly ChunkingSystem _chunkingSys = default!;

+        /// <summary>
+        /// Per-tick cache of sessions.
+        /// </summary>
+        private readonly List<ICommonSession> _sessions = new();
+        private UpdatePlayerJob _updateJob;
+
        private readonly Dictionary<ICommonSession, Dictionary<NetEntity, HashSet<Vector2i>>> _lastSentChunks = new();

        // Oh look its more duplicated decal system code!
@@ -56,6 +62,19 @@ namespace Content.Server.Atmos.EntitySystems
        public override void Initialize()
        {
            base.Initialize();
+
+            _updateJob = new UpdatePlayerJob()
+            {
+                EntManager = EntityManager,
+                System = this,
+                ChunkIndexPool = _chunkIndexPool,
+                Sessions = _sessions,
+                ChunkingSys = _chunkingSys,
+                MapManager = _mapManager,
+                ChunkViewerPool = _chunkViewerPool,
+                LastSentChunks = _lastSentChunks,
+            };
+
            _playerManager.PlayerStatusChanged += OnPlayerStatusChanged;
            _confMan.OnValueChanged(CCVars.NetGasOverlayTickRate, UpdateTickRate, true);
            _confMan.OnValueChanged(CCVars.GasOverlayThresholds, UpdateThresholds, true);
@@ -69,7 +88,7 @@ namespace Content.Server.Atmos.EntitySystems
        {
            // This **shouldn't** be required, but just in case we ever get entity prototypes that have gas overlays, we
            // need to ensure that we send an initial full state to players.
-            Dirty(component);
+            Dirty(uid, component);
        }

        public override void Shutdown()
@@ -287,87 +306,21 @@ namespace Content.Server.Atmos.EntitySystems
            // Now we'll go through each player, then through each chunk in range of that player checking if the player is still in range
            // If they are, check if they need the new data to send (i.e. if there's an overlay for the gas).
            // Afterwards we reset all the chunk data for the next time we tick.
-            var players = _playerManager.Sessions.Where(x => x.Status == SessionStatus.InGame).ToArray();
-            var opts = new ParallelOptions { MaxDegreeOfParallelism = _parMan.ParallelProcessCount };
-            Parallel.ForEach(players, opts, p => UpdatePlayer(p, curTick));
-        }
+            _sessions.Clear();

-        private void UpdatePlayer(ICommonSession playerSession, GameTick curTick)
-        {
-            var chunksInRange = _chunkingSys.GetChunksForSession(playerSession, ChunkSize, _chunkIndexPool, _chunkViewerPool);
-            var previouslySent = _lastSentChunks[playerSession];
-
-            var ev = new GasOverlayUpdateEvent();
-
-            foreach (var (netGrid, oldIndices) in previouslySent)
+            foreach (var player in _playerManager.Sessions)
            {
-                // Mark the whole grid as stale and flag for removal.
-                if (!chunksInRange.TryGetValue(netGrid, out var chunks))
-                {
-                    previouslySent.Remove(netGrid);
-
-                    // If grid was deleted then don't worry about sending it to the client.
-                    if (!TryGetEntity(netGrid, out var gridId) || !_mapManager.IsGrid(gridId.Value))
-                        ev.RemovedChunks[netGrid] = oldIndices;
-                    else
-                    {
-                        oldIndices.Clear();
-                        _chunkIndexPool.Return(oldIndices);
-                    }
-
-                    continue;
-                }
-
-                var old = _chunkIndexPool.Get();
-                DebugTools.Assert(old.Count == 0);
-                foreach (var chunk in oldIndices)
-                {
-                    if (!chunks.Contains(chunk))
-                        old.Add(chunk);
-                }
-
-                if (old.Count == 0)
-                    _chunkIndexPool.Return(old);
-                else
-                    ev.RemovedChunks.Add(netGrid, old);
-            }
-
-            foreach (var (netGrid, gridChunks) in chunksInRange)
-            {
-                // Not all grids have atmospheres.
-                if (!TryGetEntity(netGrid, out var grid) || !TryComp(grid, out GasTileOverlayComponent? overlay))
+                if (player.Status != SessionStatus.InGame)
                    continue;

-                List<GasOverlayChunk> dataToSend = new();
-                ev.UpdatedChunks[netGrid] = dataToSend;
-
-                previouslySent.TryGetValue(netGrid, out var previousChunks);
-
-                foreach (var index in gridChunks)
-                {
-                    if (!overlay.Chunks.TryGetValue(index, out var value))
-                        continue;
-
-                    if (previousChunks != null &&
-                        previousChunks.Contains(index) &&
-                        value.LastUpdate != curTick)
-                    {
-                        continue;
-                    }
-
-                    dataToSend.Add(value);
-                }
-
-                previouslySent[netGrid] = gridChunks;
-                if (previousChunks != null)
-                {
-                    previousChunks.Clear();
-                    _chunkIndexPool.Return(previousChunks);
-                }
+                _sessions.Add(player);
            }

-            if (ev.UpdatedChunks.Count != 0 || ev.RemovedChunks.Count != 0)
-                RaiseNetworkEvent(ev, playerSession.ConnectedClient);
+            if (_sessions.Count > 0)
+            {
+                _updateJob.CurrentTick = curTick;
+                _parMan.ProcessNow(_updateJob, _sessions.Count);
+            }
        }

        public void Reset(RoundRestartCleanupEvent ev)
@@ -383,5 +336,107 @@ namespace Content.Server.Atmos.EntitySystems
                data.Clear();
            }
        }
+
+        #region Jobs
+
+        /// <summary>
+        /// Updates per player gas overlay data.
+        /// </summary>
+        private record struct UpdatePlayerJob : IParallelRobustJob
+        {
+            public int BatchSize => 2;
+
+            public IEntityManager EntManager;
+            public IMapManager MapManager;
+            public ChunkingSystem ChunkingSys;
+            public GasTileOverlaySystem System;
+            public ObjectPool<HashSet<Vector2i>> ChunkIndexPool;
+            public ObjectPool<Dictionary<NetEntity, HashSet<Vector2i>>> ChunkViewerPool;
+
+            public GameTick CurrentTick;
+            public Dictionary<ICommonSession, Dictionary<NetEntity, HashSet<Vector2i>>> LastSentChunks;
+            public List<ICommonSession> Sessions;
+
+            public void Execute(int index)
+            {
+                var playerSession = Sessions[index];
+                var chunksInRange = ChunkingSys.GetChunksForSession(playerSession, ChunkSize, ChunkIndexPool, ChunkViewerPool);
+                var previouslySent = LastSentChunks[playerSession];
+
+                var ev = new GasOverlayUpdateEvent();
+
+                foreach (var (netGrid, oldIndices) in previouslySent)
+                {
+                    // Mark the whole grid as stale and flag for removal.
+                    if (!chunksInRange.TryGetValue(netGrid, out var chunks))
+                    {
+                        previouslySent.Remove(netGrid);
+
+                        // If grid was deleted then don't worry about sending it to the client.
+                        if (!EntManager.TryGetEntity(netGrid, out var gridId) || !MapManager.IsGrid(gridId.Value))
+                            ev.RemovedChunks[netGrid] = oldIndices;
+                        else
+                        {
+                            oldIndices.Clear();
+                            ChunkIndexPool.Return(oldIndices);
+                        }
+
+                        continue;
+                    }
+
+                    var old = ChunkIndexPool.Get();
+                    DebugTools.Assert(old.Count == 0);
+                    foreach (var chunk in oldIndices)
+                    {
+                        if (!chunks.Contains(chunk))
+                            old.Add(chunk);
+                    }
+
+                    if (old.Count == 0)
+                        ChunkIndexPool.Return(old);
+                    else
+                        ev.RemovedChunks.Add(netGrid, old);
+                }
+
+                foreach (var (netGrid, gridChunks) in chunksInRange)
+                {
+                    // Not all grids have atmospheres.
+                    if (!EntManager.TryGetEntity(netGrid, out var grid) || !EntManager.TryGetComponent(grid, out GasTileOverlayComponent? overlay))
+                        continue;
+
+                    List<GasOverlayChunk> dataToSend = new();
+                    ev.UpdatedChunks[netGrid] = dataToSend;
+
+                    previouslySent.TryGetValue(netGrid, out var previousChunks);
+
+                    foreach (var gIndex in gridChunks)
+                    {
+                        if (!overlay.Chunks.TryGetValue(gIndex, out var value))
+                            continue;
+
+                        if (previousChunks != null &&
+                            previousChunks.Contains(gIndex) &&
+                            value.LastUpdate != CurrentTick)
+                        {
+                            continue;
+                        }
+
+                        dataToSend.Add(value);
+                    }
+
+                    previouslySent[netGrid] = gridChunks;
+                    if (previousChunks != null)
+                    {
+                        previousChunks.Clear();
+                        ChunkIndexPool.Return(previousChunks);
+                    }
+                }
+
+                if (ev.UpdatedChunks.Count != 0 || ev.RemovedChunks.Count != 0)
+                    System.RaiseNetworkEvent(ev, playerSession.Channel);
+            }
+        }
+
+        #endregion
    }
 }
--- a/Content.Server/Atmos/Miasma/RottingSystem.cs
+++ b/Content.Server/Atmos/Miasma/RottingSystem.cs
@@ -118,9 +118,7 @@ public sealed class RottingSystem : EntitySystem
            return;

        var molsToDump = perishable.MolsPerSecondPerUnitMass * physics.FixturesMass * (float) component.TotalRotTime.TotalSeconds;
-        var transform = Transform(uid);
-        var indices = _transform.GetGridOrMapTilePosition(uid, transform);
-        var tileMix = _atmosphere.GetTileMixture(transform.GridUid, transform.MapUid, indices, true);
+        var tileMix = _atmosphere.GetTileMixture(uid, excite: true);
        tileMix?.AdjustMoles(Gas.Miasma, molsToDump);
    }

@@ -214,8 +212,7 @@ public sealed class RottingSystem : EntitySystem
            // We need a way to get the mass of the mob alone without armor etc in the future
            // or just remove the mass mechanics altogether because they aren't good.
            var molRate = perishable.MolsPerSecondPerUnitMass * (float) rotting.RotUpdateRate.TotalSeconds;
-            var indices = _transform.GetGridOrMapTilePosition(uid);
-            var tileMix = _atmosphere.GetTileMixture(xform.GridUid, null, indices, true);
+            var tileMix = _atmosphere.GetTileMixture(uid, excite: true);
            tileMix?.AdjustMoles(Gas.Miasma, molRate * physics.FixturesMass);
        }
    }
--- a/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs
+++ b/Content.Server/Atmos/Monitor/Systems/AtmosAlarmableSystem.cs
@@ -7,6 +7,7 @@ using Content.Server.DeviceNetwork.Systems;
 using Content.Server.Power.Components;
 using Content.Shared.Atmos.Monitor;
 using Content.Shared.Tag;
+using Robust.Server.Audio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
 using Robust.Shared.Utility;
--- a/Content.Server/Atmos/Piping/Binary/EntitySystems/GasValveSystem.cs
+++ b/Content.Server/Atmos/Piping/Binary/EntitySystems/GasValveSystem.cs
@@ -8,6 +8,7 @@ using Content.Shared.Examine;
 using Content.Shared.Interaction;
 using JetBrains.Annotations;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Player;

 namespace Content.Server.Atmos.Piping.Binary.EntitySystems
@@ -17,6 +18,7 @@ namespace Content.Server.Atmos.Piping.Binary.EntitySystems
    {
        [Dependency] private readonly SharedAmbientSoundSystem _ambientSoundSystem = default!;
        [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
+        [Dependency] private readonly SharedAudioSystem _audio = default!;
        [Dependency] private readonly NodeContainerSystem _nodeContainer = default!;

        public override void Initialize()
@@ -35,10 +37,11 @@ namespace Content.Server.Atmos.Piping.Binary.EntitySystems
                return;

            if (Loc.TryGetString("gas-valve-system-examined", out var str,
-                        ("statusColor", valve.Open ? "green" : "orange"),
-                        ("open", valve.Open)
-            ))
+                    ("statusColor", valve.Open ? "green" : "orange"),
+                    ("open", valve.Open)))
+            {
                args.PushMarkup(str);
+            }
        }

        private void OnStartup(EntityUid uid, GasValveComponent component, ComponentStartup args)
@@ -50,7 +53,7 @@ namespace Content.Server.Atmos.Piping.Binary.EntitySystems
        private void OnActivate(EntityUid uid, GasValveComponent component, ActivateInWorldEvent args)
        {
            Toggle(uid, component);
-            SoundSystem.Play(component.ValveSound.GetSound(), Filter.Pvs(uid), uid, AudioHelpers.WithVariation(0.25f));
+            _audio.PlayPvs(component.ValveSound, uid, AudioParams.Default.WithVariation(0.25f));
        }

        public void Set(EntityUid uid, GasValveComponent component, bool value)
--- a/Content.Server/Atmos/Piping/Binary/EntitySystems/GasVolumePumpSystem.cs
+++ b/Content.Server/Atmos/Piping/Binary/EntitySystems/GasVolumePumpSystem.cs
@@ -110,9 +110,7 @@ namespace Content.Server.Atmos.Piping.Binary.EntitySystems
            // Some of the gas from the mixture leaks when overclocked.
            if (pump.Overclocked)
            {
-                var transform = Transform(uid);
-                var indices = _transformSystem.GetGridOrMapTilePosition(uid, transform);
-                var tile = _atmosphereSystem.GetTileMixture(transform.GridUid, null, indices, true);
+                var tile = _atmosphereSystem.GetTileMixture(uid, excite: true);

                if (tile != null)
                {
--- a/Content.Server/Atmos/Piping/Unary/EntitySystems/GasCanisterSystem.cs
+++ b/Content.Server/Atmos/Piping/Unary/EntitySystems/GasCanisterSystem.cs
@@ -16,6 +16,8 @@ using Content.Shared.Hands.EntitySystems;
 using Content.Shared.Interaction;
 using Content.Shared.Lock;
 using Robust.Server.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Containers;
 using Robust.Shared.Player;

--- a/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentScrubberSystem.cs
+++ b/Content.Server/Atmos/Piping/Unary/EntitySystems/GasVentScrubberSystem.cs
@@ -67,8 +67,7 @@ namespace Content.Server.Atmos.Piping.Unary.EntitySystems
            if (xform.GridUid == null)
                return;

-            var position = _transformSystem.GetGridOrMapTilePosition(uid, xform);
-
+            var position = _transformSystem.GetGridTilePositionOrDefault((uid,xform));
            var environment = _atmosphereSystem.GetTileMixture(xform.GridUid, xform.MapUid, position, true);

            Scrub(timeDelta, scrubber, environment, outlet);
--- a/Content.Server/Atmos/Portable/PortableScrubberSystem.cs
+++ b/Content.Server/Atmos/Portable/PortableScrubberSystem.cs
@@ -79,8 +79,7 @@ namespace Content.Server.Atmos.Portable
            if (xform.GridUid == null)
                return;

-            var position = _transformSystem.GetGridOrMapTilePosition(uid, xform);
-
+            var position = _transformSystem.GetGridTilePositionOrDefault((uid,xform));
            var environment = _atmosphereSystem.GetTileMixture(xform.GridUid, xform.MapUid, position, true);

            var running = Scrub(timeDelta, component, environment);
--- a/Content.Server/Audio/ContentAudioSystem.cs
+++ b/Content.Server/Audio/ContentAudioSystem.cs
@@ -1,8 +1,41 @@
+using Content.Server.GameTicking.Events;
 using Content.Shared.Audio;
+using Robust.Server.Audio;
+using Robust.Shared.Audio;
+using Robust.Shared.Prototypes;

 namespace Content.Server.Audio;

 public sealed class ContentAudioSystem : SharedContentAudioSystem
 {
+    [Dependency] private readonly AudioSystem _serverAudio = default!;
+    [Dependency] private readonly IPrototypeManager _protoManager = default!;

+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<RoundStartingEvent>(OnRoundStart);
+        _protoManager.PrototypesReloaded += OnProtoReload;
+    }
+
+    private void OnProtoReload(PrototypesReloadedEventArgs obj)
+    {
+        if (!obj.ByType.ContainsKey(typeof(AudioPresetPrototype)))
+            return;
+
+        _serverAudio.ReloadPresets();
+    }
+
+    public override void Shutdown()
+    {
+        base.Shutdown();
+        _protoManager.PrototypesReloaded -= OnProtoReload;
+    }
+
+    private void OnRoundStart(RoundStartingEvent ev)
+    {
+        // On cleanup all entities get purged so need to ensure audio presets are still loaded
+        // yeah it's whacky af.
+        _serverAudio.ReloadPresets();
+    }
 }
--- a/Content.Server/Beam/BeamSystem.cs
+++ b/Content.Server/Beam/BeamSystem.cs
@@ -3,6 +3,8 @@ using Content.Server.Beam.Components;
 using Content.Shared.Beam;
 using Content.Shared.Beam.Components;
 using Content.Shared.Physics;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Map;
 using Robust.Shared.Physics;
 using Robust.Shared.Physics.Collision.Shapes;
--- a/Content.Server/Bed/Sleep/SleepingSystem.cs
+++ b/Content.Server/Bed/Sleep/SleepingSystem.cs
@@ -13,6 +13,8 @@ using Content.Shared.Slippery;
 using Content.Shared.StatusEffect;
 using Content.Shared.Stunnable;
 using Content.Shared.Verbs;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Player;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
--- a/Content.Server/Bible/BibleSystem.cs
+++ b/Content.Server/Bible/BibleSystem.cs
@@ -15,6 +15,7 @@ using Content.Shared.Popups;
 using Content.Shared.Timing;
 using Content.Shared.Verbs;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Player;
 using Robust.Shared.Random;

@@ -29,6 +30,7 @@ namespace Content.Server.Bible
        [Dependency] private readonly MobStateSystem _mobStateSystem = default!;
        [Dependency] private readonly PopupSystem _popupSystem = default!;
        [Dependency] private readonly SharedActionsSystem _actionsSystem = default!;
+        [Dependency] private readonly SharedAudioSystem _audio = default!;
        [Dependency] private readonly UseDelaySystem _delay = default!;

        public override void Initialize()
@@ -80,8 +82,8 @@ namespace Content.Server.Bible
                    summonableComp.Summon = null;
                }
                summonableComp.AlreadySummoned = false;
-                _popupSystem.PopupEntity(Loc.GetString("bible-summon-respawn-ready", ("book", uid)), uid, PopupType.Medium);
-                SoundSystem.Play("/Audio/Effects/radpulse9.ogg", Filter.Pvs(uid), uid, AudioParams.Default.WithVolume(-4f));
+                _popupSystem.PopupEntity(Loc.GetString("bible-summon-respawn-ready", ("book", summonableComp.Owner)), summonableComp.Owner, PopupType.Medium);
+                _audio.PlayPvs("/Audio/Effects/radpulse9.ogg", summonableComp.Owner, AudioParams.Default.WithVolume(-4f));
                // Clean up the accumulator and respawn tracking component
                summonableComp.Accumulator = 0;
                _remQueue.Enqueue(uid);
@@ -107,7 +109,7 @@ namespace Content.Server.Bible
            {
                _popupSystem.PopupEntity(Loc.GetString("bible-sizzle"), args.User, args.User);

-                SoundSystem.Play(component.SizzleSoundPath.GetSound(), Filter.Pvs(args.User), args.User);
+                _audio.PlayPvs(component.SizzleSoundPath, args.User);
                _damageableSystem.TryChangeDamage(args.User, component.DamageOnUntrainedUse, true, origin: uid);
                _delay.BeginDelay(uid, delay);

@@ -125,7 +127,7 @@ namespace Content.Server.Bible
                    var selfFailMessage = Loc.GetString(component.LocPrefix + "-heal-fail-self", ("target", Identity.Entity(args.Target.Value, EntityManager)),("bible", uid));
                    _popupSystem.PopupEntity(selfFailMessage, args.User, args.User, PopupType.MediumCaution);

-                    SoundSystem.Play("/Audio/Effects/hit_kick.ogg", Filter.Pvs(args.Target.Value), args.User);
+                    _audio.PlayPvs("/Audio/Effects/hit_kick.ogg", args.User);
                    _damageableSystem.TryChangeDamage(args.Target.Value, component.DamageOnFail, true, origin: uid);
                    _delay.BeginDelay(uid, delay);
                    return;
@@ -149,7 +151,7 @@ namespace Content.Server.Bible

                var selfMessage = Loc.GetString(component.LocPrefix + "-heal-success-self", ("target", Identity.Entity(args.Target.Value, EntityManager)),("bible", uid));
                _popupSystem.PopupEntity(selfMessage, args.User, args.User, PopupType.Large);
-                SoundSystem.Play(component.HealSoundPath.GetSound(), Filter.Pvs(args.Target.Value), args.User);
+                _audio.PlayPvs(component.HealSoundPath, args.User);
                _delay.BeginDelay(uid, delay);
            }
        }
--- a/Content.Server/Body/Systems/BloodstreamSystem.cs
+++ b/Content.Server/Body/Systems/BloodstreamSystem.cs
@@ -20,6 +20,8 @@ using Content.Shared.Speech.EntitySystems;
 using Robust.Server.GameObjects;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
+using Content.Shared.Speech.EntitySystems;
+using Robust.Server.Audio;

 namespace Content.Server.Body.Systems;

--- a/Content.Server/Body/Systems/BodySystem.cs
+++ b/Content.Server/Body/Systems/BodySystem.cs
@@ -15,6 +15,7 @@ using Robust.Shared.Player;
 using Robust.Shared.Random;
 using Robust.Shared.Timing;
 using System.Numerics;
+using Robust.Shared.Audio.Systems;

 namespace Content.Server.Body.Systems;

@@ -129,7 +130,7 @@ public sealed class BodySystem : SharedBodySystem
        var filter = Filter.Pvs(bodyId, entityManager: EntityManager);
        var audio = AudioParams.Default.WithVariation(0.025f);

-        _audio.Play(body.GibSound, filter, coordinates, true, audio);
+        _audio.PlayStatic(body.GibSound, filter, coordinates, true, audio);

        foreach (var entity in gibs)
        {
--- a/Content.Server/Botany/Systems/MutationSystem.cs
+++ b/Content.Server/Botany/Systems/MutationSystem.cs
@@ -1,5 +1,7 @@
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
+using Content.Shared.Random;
+using Content.Shared.Random.Helpers;
 using Content.Shared.Chemistry.Reagent;
 using System.Linq;
 using Content.Shared.Atmos;
@@ -11,11 +13,12 @@ public sealed class MutationSystem : EntitySystem
 {
    [Dependency] private readonly IRobustRandom _robustRandom = default!;
    [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
-    private List<ReagentPrototype> _allChemicals = default!;
+    private WeightedRandomFillSolutionPrototype _randomChems = default!;
+

    public override void Initialize()
    {
-        _allChemicals = _prototypeManager.EnumeratePrototypes<ReagentPrototype>().ToList();
+        _randomChems = _prototypeManager.Index<WeightedRandomFillSolutionPrototype>("RandomPickBotanyReagent");
    }

    /// <summary>
@@ -37,7 +40,7 @@ public sealed class MutationSystem : EntitySystem
        }

        // Add up everything in the bits column and put the number here.
-        const int totalbits = 270;
+        const int totalbits = 275;

        // Tolerances (55)
        MutateFloat(ref seed.NutrientConsumption  , 0.05f, 1.2f, 5, totalbits, severity);
@@ -81,10 +84,10 @@ public sealed class MutationSystem : EntitySystem
        MutateGasses(ref seed.ConsumeGasses, 0.01f, 0.5f, 1, totalbits, severity);

        // Chems (20)
-        MutateChemicals(ref seed.Chemicals, 5, 20, totalbits, severity);
+        MutateChemicals(ref seed.Chemicals, 20, totalbits, severity);

-        // Species (5)
-        MutateSpecies(ref seed, 5, totalbits, severity);
+        // Species (10)
+        MutateSpecies(ref seed, 10, totalbits, severity);
    }

    public SeedData Cross(SeedData a, SeedData b)
@@ -246,7 +249,7 @@ public sealed class MutationSystem : EntitySystem
        }
    }

-    private void MutateChemicals(ref Dictionary<string, SeedChemQuantity> chemicals, int max, int bits, int totalbits, float mult)
+    private void MutateChemicals(ref Dictionary<string, SeedChemQuantity> chemicals, int bits, int totalbits, float mult)
    {
        float probModify = mult * bits / totalbits;
        probModify = Math.Clamp(probModify, 0, 1);
@@ -254,11 +257,11 @@ public sealed class MutationSystem : EntitySystem
            return;

        // Add a random amount of a random chemical to this set of chemicals
-        ReagentPrototype selectedChemical = _robustRandom.Pick(_allChemicals);
-        if (selectedChemical != null)
+        if (_randomChems != null)
        {
-            string chemicalId = selectedChemical.ID;
-            int amount = _robustRandom.Next(1, max);
+            var pick = _randomChems.Pick(_robustRandom);
+            string chemicalId = pick.reagent;
+            int amount = _robustRandom.Next(1, ((int)pick.quantity));
            SeedChemQuantity seedChemQuantity = new SeedChemQuantity();
            if (chemicals.ContainsKey(chemicalId))
            {
--- a/Content.Server/Botany/Systems/PlantHolderSystem.cs
+++ b/Content.Server/Botany/Systems/PlantHolderSystem.cs
@@ -19,6 +19,7 @@ using Content.Shared.Random;
 using Content.Shared.Tag;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Player;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Random;
--- a/Content.Server/CardboardBox/CardboardBoxSystem.cs
+++ b/Content.Server/CardboardBox/CardboardBoxSystem.cs
@@ -10,6 +10,8 @@ using Content.Shared.Stealth;
 using Content.Shared.Stealth.Components;
 using Content.Shared.Storage.Components;
 using Robust.Server.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Containers;
 using Robust.Shared.Player;
 using Robust.Shared.Timing;
--- a/Content.Server/Cargo/Systems/CargoSystem.cs
+++ b/Content.Server/Cargo/Systems/CargoSystem.cs
@@ -13,6 +13,8 @@ using Content.Shared.Containers.ItemSlots;
 using Content.Shared.Mobs.Components;
 using JetBrains.Annotations;
 using Robust.Server.GameObjects;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Map;
 using Robust.Shared.Prototypes;
--- a/Content.Server/CartridgeLoader/Cartridges/NetProbeCartridgeSystem.cs
+++ b/Content.Server/CartridgeLoader/Cartridges/NetProbeCartridgeSystem.cs
@@ -4,6 +4,7 @@ using Content.Shared.CartridgeLoader;
 using Content.Shared.CartridgeLoader.Cartridges;
 using Content.Shared.Popups;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Player;
 using Robust.Shared.Random;

--- a/Content.Server/Chat/Managers/ChatManager.RateLimit.cs
+++ b/Content.Server/Chat/Managers/ChatManager.RateLimit.cs
@@ -0,0 +1,84 @@
+using System.Runtime.InteropServices;
+using Content.Shared.CCVar;
+using Content.Shared.Database;
+using Robust.Shared.Enums;
+using Robust.Shared.Player;
+using Robust.Shared.Timing;
+
+namespace Content.Server.Chat.Managers;
+
+internal sealed partial class ChatManager
+{
+    private readonly Dictionary<ICommonSession, RateLimitDatum> _rateLimitData = new();
+
+    public bool HandleRateLimit(ICommonSession player)
+    {
+        ref var datum = ref CollectionsMarshal.GetValueRefOrAddDefault(_rateLimitData, player, out _);
+        var time = _gameTiming.RealTime;
+        if (datum.CountExpires < time)
+        {
+            // Period expired, reset it.
+            var periodLength = _configurationManager.GetCVar(CCVars.ChatRateLimitPeriod);
+            datum.CountExpires = time + TimeSpan.FromSeconds(periodLength);
+            datum.Count = 0;
+            datum.Announced = false;
+        }
+
+        var maxCount = _configurationManager.GetCVar(CCVars.ChatRateLimitCount);
+        datum.Count += 1;
+
+        if (datum.Count <= maxCount)
+            return true;
+
+        // Breached rate limits, inform admins if configured.
+        if (_configurationManager.GetCVar(CCVars.ChatRateLimitAnnounceAdmins))
+        {
+            if (datum.NextAdminAnnounce < time)
+            {
+                SendAdminAlert(Loc.GetString("chat-manager-rate-limit-admin-announcement", ("player", player.Name)));
+                var delay = _configurationManager.GetCVar(CCVars.ChatRateLimitAnnounceAdminsDelay);
+                datum.NextAdminAnnounce = time + TimeSpan.FromSeconds(delay);
+            }
+        }
+
+        if (!datum.Announced)
+        {
+            DispatchServerMessage(player, Loc.GetString("chat-manager-rate-limited"), suppressLog: true);
+            _adminLogger.Add(LogType.ChatRateLimited, LogImpact.Medium, $"Player {player} breached chat rate limits");
+
+            datum.Announced = true;
+        }
+
+        return false;
+    }
+
+    private void PlayerStatusChanged(object? sender, SessionStatusEventArgs e)
+    {
+        if (e.NewStatus == SessionStatus.Disconnected)
+            _rateLimitData.Remove(e.Session);
+    }
+
+    private struct RateLimitDatum
+    {
+        /// <summary>
+        /// Time stamp (relative to <see cref="IGameTiming.RealTime"/>) this rate limit period will expire at.
+        /// </summary>
+        public TimeSpan CountExpires;
+
+        /// <summary>
+        /// How many messages have been sent in the current rate limit period.
+        /// </summary>
+        public int Count;
+
+        /// <summary>
+        /// Have we announced to the player that they've been blocked in this rate limit period?
+        /// </summary>
+        public bool Announced;
+
+        /// <summary>
+        /// Time stamp (relative to <see cref="IGameTiming.RealTime"/>) of the
+        /// next time we can send an announcement to admins about rate limit breach.
+        /// </summary>
+        public TimeSpan NextAdminAnnounce;
+    }
+}
--- a/Content.Server/Chat/Managers/ChatManager.cs
+++ b/Content.Server/Chat/Managers/ChatManager.cs
@@ -12,10 +12,12 @@ using Content.Shared.CCVar;
 using Content.Shared.Chat;
 using Content.Shared.Database;
 using Content.Shared.Mind;
+using Robust.Server.Player;
 using Robust.Shared.Configuration;
 using Robust.Shared.Network;
 using Robust.Shared.Player;
 using Robust.Shared.Replays;
+using Robust.Shared.Timing;
 using Robust.Shared.Utility;

 namespace Content.Server.Chat.Managers
@@ -23,7 +25,7 @@ namespace Content.Server.Chat.Managers
    /// <summary>
    ///     Dispatches chat messages to clients.
    /// </summary>
-    internal sealed class ChatManager : IChatManager
+    internal sealed partial class ChatManager : IChatManager
    {
        private static readonly Dictionary<string, string> PatronOocColors = new()
        {
@@ -42,6 +44,8 @@ namespace Content.Server.Chat.Managers
        [Dependency] private readonly IConfigurationManager _configurationManager = default!;
        [Dependency] private readonly INetConfigurationManager _netConfigManager = default!;
        [Dependency] private readonly IEntityManager _entityManager = default!;
+        [Dependency] private readonly IGameTiming _gameTiming = default!;
+        [Dependency] private readonly IPlayerManager _playerManager = default!;
        private IServerSponsorsManager? _sponsorsManager; // Corvax-Sponsors

        /// <summary>
@@ -62,6 +66,8 @@ namespace Content.Server.Chat.Managers

            _configurationManager.OnValueChanged(CCVars.OocEnabled, OnOocEnabledChanged, true);
            _configurationManager.OnValueChanged(CCVars.AdminOocEnabled, OnAdminOocEnabledChanged, true);
+
+            _playerManager.PlayerStatusChanged += PlayerStatusChanged;
        }

        private void OnOocEnabledChanged(bool val)
@@ -181,6 +187,9 @@ namespace Content.Server.Chat.Managers
        /// <param name="type">The type of message.</param>
        public void TrySendOOCMessage(ICommonSession player, string message, OOCChatType type)
        {
+            if (!HandleRateLimit(player))
+                return;
+
            // Check if message exceeds the character limit
            if (message.Length > MaxMessageLength)
            {
--- a/Content.Server/Chat/Managers/IChatManager.cs
+++ b/Content.Server/Chat/Managers/IChatManager.cs
@@ -41,5 +41,13 @@ namespace Content.Server.Chat.Managers

        [return: NotNullIfNotNull(nameof(author))]
        ChatUser? EnsurePlayer(NetUserId? author);
+
+        /// <summary>
+        /// Called when a player sends a chat message to handle rate limits.
+        /// Will update counts and do necessary actions if breached.
+        /// </summary>
+        /// <param name="player">The player sending a chat message.</param>
+        /// <returns>False if the player has violated rate limits and should be blocked from sending further messages.</returns>
+        bool HandleRateLimit(ICommonSession player);
    }
 }
--- a/Content.Server/Chat/Systems/ChatSystem.cs
+++ b/Content.Server/Chat/Systems/ChatSystem.cs
@@ -22,6 +22,7 @@ using Content.Shared.Players;
 using Content.Shared.Radio;
 using Robust.Server.Player;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Configuration;
 using Robust.Shared.Console;
 using Robust.Shared.Network;
@@ -185,6 +186,9 @@ public sealed partial class ChatSystem : SharedChatSystem
            return;
        }

+        if (player != null && !_chatManager.HandleRateLimit(player))
+            return;
+
        // Sus
        if (player?.AttachedEntity is { Valid: true } entity && source != entity)
        {
@@ -194,6 +198,8 @@ public sealed partial class ChatSystem : SharedChatSystem
        if (!CanSendInGame(message, shell, player))
            return;

+        ignoreActionBlocker = CheckIgnoreSpeechBlocker(source, ignoreActionBlocker);
+
        // this method is a disaster
        // every second i have to spend working with this code is fucking agony
        // scientists have to wonder how any of this was merged
@@ -237,7 +243,7 @@ public sealed partial class ChatSystem : SharedChatSystem
        {
            if (TryProccessRadioMessage(source, message, out var modMessage, out var channel))
            {
-                SendEntityWhisper(source, modMessage, range, channel, nameOverride, ignoreActionBlocker);
+                SendEntityWhisper(source, modMessage, range, channel, nameOverride, hideLog, ignoreActionBlocker);
                return;
            }
        }
@@ -269,6 +275,9 @@ public sealed partial class ChatSystem : SharedChatSystem
        if (!CanSendInGame(message, shell, player))
            return;

+        if (player != null && !_chatManager.HandleRateLimit(player))
+            return;
+
        // It doesn't make any sense for a non-player to send in-game OOC messages, whereas non-players may be sending
        // in-game IC messages.
        if (player?.AttachedEntity is not { Valid: true } entity || source != entity)
@@ -319,7 +328,7 @@ public sealed partial class ChatSystem : SharedChatSystem
        if (playSound)
        {
            if (sender == Loc.GetString("admin-announce-announcer-default")) announcementSound = new SoundPathSpecifier(CentComAnnouncementSound); // Corvax-Announcements: Support custom alert sound from admin panel
-            SoundSystem.Play(announcementSound?.GetSound() ?? DefaultAnnouncementSound, Filter.Broadcast(), announcementSound?.Params ?? AudioParams.Default.WithVolume(-2f));
+            _audio.PlayGlobal(announcementSound?.GetSound() ?? DefaultAnnouncementSound, Filter.Broadcast(), true, announcementSound?.Params ?? AudioParams.Default.WithVolume(-2f));
        }
        _adminLogger.Add(LogType.Chat, LogImpact.Low, $"Global station announcement from {sender}: {message}");
    }
@@ -357,7 +366,7 @@ public sealed partial class ChatSystem : SharedChatSystem

        if (playDefaultSound)
        {
-            SoundSystem.Play(announcementSound?.GetSound() ?? DefaultAnnouncementSound, filter, AudioParams.Default.WithVolume(-2f));
+            _audio.PlayGlobal(announcementSound?.GetSound() ?? DefaultAnnouncementSound, filter, true, AudioParams.Default.WithVolume(-2f));
        }

        _adminLogger.Add(LogType.Chat, LogImpact.Low, $"Station Announcement on {station} from {sender}: {message}");
@@ -738,6 +747,17 @@ public sealed partial class ChatSystem : SharedChatSystem
        return ev.Message;
    }

+    public bool CheckIgnoreSpeechBlocker(EntityUid sender, bool ignoreBlocker)
+    {
+        if (ignoreBlocker)
+            return ignoreBlocker;
+
+        var ev = new CheckIgnoreSpeechBlockerEvent(sender, ignoreBlocker);
+        RaiseLocalEvent(sender, ev, true);
+
+        return ev.IgnoreBlocker;
+    }
+
    private IEnumerable<INetChannel> GetDeadChatClients()
    {
        return Filter.Empty()
@@ -875,6 +895,18 @@ public sealed class TransformSpeechEvent : EntityEventArgs
    }
 }

+public sealed class CheckIgnoreSpeechBlockerEvent : EntityEventArgs
+{
+    public EntityUid Sender;
+    public bool IgnoreBlocker;
+
+    public CheckIgnoreSpeechBlockerEvent(EntityUid sender, bool ignoreBlocker)
+    {
+        Sender = sender;
+        IgnoreBlocker = ignoreBlocker;
+    }
+}
+
 /// <summary>
 ///     Raised on an entity when it speaks, either through 'say' or 'whisper'.
 /// </summary>
--- a/Content.Server/Chemistry/EntitySystems/ChemMasterSystem.cs
+++ b/Content.Server/Chemistry/EntitySystems/ChemMasterSystem.cs
@@ -14,6 +14,7 @@ using Content.Shared.Database;
 using Content.Shared.FixedPoint;
 using Content.Shared.Storage;
 using JetBrains.Annotations;
+using Robust.Server.Audio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
 using Robust.Shared.Containers;
--- a/Content.Server/Chemistry/EntitySystems/ChemistrySystem.cs
+++ b/Content.Server/Chemistry/EntitySystems/ChemistrySystem.cs
@@ -7,6 +7,8 @@ using Content.Shared.Chemistry;
 using Content.Shared.Chemistry.EntitySystems;
 using Content.Shared.DoAfter;
 using Content.Shared.Mobs.Systems;
+using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;

 namespace Content.Server.Chemistry.EntitySystems;

--- a/Content.Server/Chemistry/EntitySystems/ReagentDispenserSystem.cs
+++ b/Content.Server/Chemistry/EntitySystems/ReagentDispenserSystem.cs
@@ -10,6 +10,7 @@ using Content.Shared.Database;
 using Content.Shared.Emag.Components;
 using Content.Shared.Emag.Systems;
 using JetBrains.Annotations;
+using Robust.Server.Audio;
 using Robust.Server.GameObjects;
 using Robust.Shared.Audio;
 using Robust.Shared.Containers;
--- a/Content.Server/Chemistry/ReactionEffects/AreaReactionEffect.cs
+++ b/Content.Server/Chemistry/ReactionEffects/AreaReactionEffect.cs
@@ -8,6 +8,7 @@ using Content.Shared.FixedPoint;
 using Content.Shared.Maps;
 using JetBrains.Annotations;
 using Robust.Shared.Audio;
+using Robust.Shared.Audio.Systems;
 using Robust.Shared.Map;
 using Robust.Shared.Prototypes;
 using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
@@ -72,7 +73,8 @@ namespace Content.Server.Chemistry.ReactionEffects
            var smoke = args.EntityManager.System<SmokeSystem>();
            smoke.StartSmoke(ent, splitSolution, _duration, spreadAmount);

-            args.EntityManager.System<SharedAudioSystem>().PlayPvs(_sound, args.SolutionEntity, AudioHelpers.WithVariation(0.125f));
+            var audio = args.EntityManager.System<SharedAudioSystem>();
+            audio.PlayPvs(_sound, args.SolutionEntity, AudioHelpers.WithVariation(0.125f));
        }
    }
 }
--- a/Content.Server/Chunking/ChunkingSystem.cs
+++ b/Content.Server/Chunking/ChunkingSystem.cs
@@ -38,7 +38,10 @@ public sealed class ChunkingSystem : EntitySystem
        _configurationManager.UnsubValueChanged(CVars.NetMaxUpdateRange, OnPvsRangeChanged);
    }

-    private void OnPvsRangeChanged(float value) => _baseViewBounds = Box2.UnitCentered.Scale(value);
+    private void OnPvsRangeChanged(float value)
+    {
+        _baseViewBounds = Box2.UnitCentered.Scale(value);
+    }

    public Dictionary<NetEntity, HashSet<Vector2i>> GetChunksForSession(
        ICommonSession session,
@@ -46,71 +49,85 @@ public sealed class ChunkingSystem : EntitySystem
        ObjectPool<HashSet<Vector2i>> indexPool,
        ObjectPool<Dictionary<NetEntity, HashSet<Vector2i>>> viewerPool,
        float? viewEnlargement = null)
-    {
-        var viewers = GetSessionViewers(session);
-        var chunks = GetChunksForViewers(viewers, chunkSize, indexPool, viewerPool, viewEnlargement ?? chunkSize);
-        return chunks;
-    }
-
-    private HashSet<EntityUid> GetSessionViewers(ICommonSession session)
-    {
-        var viewers = new HashSet<EntityUid>();
-        if (session.Status != SessionStatus.InGame || session.AttachedEntity is null)
-            return viewers;
-
-        viewers.Add(session.AttachedEntity.Value);
-
-        foreach (var uid in session.ViewSubscriptions)
-        {
-            viewers.Add(uid);
-        }
-
-        return viewers;
-    }
-
-    private Dictionary<NetEntity, HashSet<Vector2i>> GetChunksForViewers(
-        HashSet<EntityUid> viewers,
-        int chunkSize,
-        ObjectPool<HashSet<Vector2i>> indexPool,
-        ObjectPool<Dictionary<NetEntity, HashSet<Vector2i>>> viewerPool,
-        float viewEnlargement)
    {
        var chunks = viewerPool.Get();
        DebugTools.Assert(chunks.Count == 0);

-        foreach (var viewerUid in viewers)
+        if (session.Status != SessionStatus.InGame || session.AttachedEntity is not {} player)
+            return chunks;
+
+        var enlargement = viewEnlargement ?? chunkSize;
+        AddViewerChunks(player, chunks, indexPool, chunkSize, enlargement);
+        foreach (var uid in session.ViewSubscriptions)
        {
-            if (!_xformQuery.TryGetComponent(viewerUid, out var xform))
-            {
-                Log.Error($"Player has deleted viewer entities? Viewers: {string.Join(", ", viewers.Select(ToPrettyString))}");
-                continue;
-            }
-
-            var pos = _transform.GetWorldPosition(xform);
-            var bounds = _baseViewBounds.Translated(pos).Enlarged(viewEnlargement);
-            var grids = new List<Entity<MapGridComponent>>();
-            _mapManager.FindGridsIntersecting(xform.MapID, bounds, ref grids, true);
-
-            foreach (var grid in grids)
-            {
-                var netGrid = GetNetEntity(grid);
-
-                if (!chunks.TryGetValue(netGrid, out var set))
-                {
-                    chunks[netGrid] = set = indexPool.Get();
-                    DebugTools.Assert(set.Count == 0);
-                }
-
-                var enumerator = new ChunkIndicesEnumerator(_transform.GetInvWorldMatrix(grid).TransformBox(bounds), chunkSize);
-
-                while (enumerator.MoveNext(out var indices))
-                {
-                    set.Add(indices.Value);
-                }
-            }
+            AddViewerChunks(uid, chunks, indexPool, chunkSize, enlargement);
        }

        return chunks;
    }
+
+    private void AddViewerChunks(EntityUid viewer,
+        Dictionary<NetEntity, HashSet<Vector2i>> chunks,
+        ObjectPool<HashSet<Vector2i>> indexPool,
+        int chunkSize,
+        float viewEnlargement)
+    {
+        if (!_xformQuery.TryGetComponent(viewer, out var xform))
+            return;
+
+        var pos = _transform.GetWorldPosition(xform);
+        var bounds = _baseViewBounds.Translated(pos).Enlarged(viewEnlargement);
+
+        var state = new QueryState(chunks, indexPool, chunkSize, bounds, _transform, EntityManager);
+        _mapManager.FindGridsIntersecting(xform.MapID, bounds, ref state, AddGridChunks, true);
+    }
+
+    private static bool AddGridChunks(
+        EntityUid uid,
+        MapGridComponent grid,
+        ref QueryState state)
+    {
+        var netGrid = state.EntityManager.GetNetEntity(uid);
+        if (!state.Chunks.TryGetValue(netGrid, out var set))
+        {
+            state.Chunks[netGrid] = set = state.Pool.Get();
+            DebugTools.Assert(set.Count == 0);
+        }
+
+        var aabb = state.Transform.GetInvWorldMatrix(uid).TransformBox(state.Bounds);
+        var enumerator = new ChunkIndicesEnumerator(aabb, state.ChunkSize);
+        while (enumerator.MoveNext(out var indices))
+        {
+            set.Add(indices.Value);
+        }
+
+        return true;
+    }
+
+    private readonly struct QueryState
+    {
+        public readonly Dictionary<NetEntity, HashSet<Vector2i>> Chunks;
+        public readonly ObjectPool<HashSet<Vector2i>> Pool;
+        public readonly int ChunkSize;
+        public readonly Box2 Bounds;
+        public readonly SharedTransformSystem Transform;
+        public readonly EntityManager EntityManager;
+
+        public QueryState(
+            Dictionary<NetEntity, HashSet<Vector2i>> chunks,
+            ObjectPool<HashSet<Vector2i>> pool,
+            int chunkSize,
+            Box2 bounds,
+            SharedTransformSystem transform,
+            EntityManager entityManager)
+        {
+            Chunks = chunks;
+            Pool = pool;
+            ChunkSize = chunkSize;
+            Bounds = bounds;
+            Transform = transform;
+            EntityManager = entityManager;
+        }
+    }
 }

--- a/Show More
+++ b/Show More