Version: 267.3.2

Apparently NetSerializer treats IDynamicTypeSerializer and IStaticTypeSerializer differently for sealed types??

(cherry-picked from 6bbeaeeba6, without the test changes)

(cherry picked from commit d187018834dfa1cdead9ce5a7b72c38b07f8c81f)

.github/workflows/build-all-configurations.yml

@@ -0,0 +1,34 @@
+name: Build All Configurations
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    strategy:
+      matrix:
+        targetOS: [Windows, Linux, MacOS]
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4.2.2
+        with:
+          submodules: true
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4.1.0
+        with:
+          dotnet-version: 9.0.x
+
+      - name: Install dependencies
+        run: dotnet restore
+      - name: Build Debug
+        run: dotnet build --no-restore --configuration Debug /p:WarningsAsErrors=nullable /p:TargetOS=${{ matrix.targetOS }}
+      - name: Build Tools
+        run: dotnet build --no-restore --configuration Tools /p:WarningsAsErrors=nullable /p:TargetOS=${{ matrix.targetOS }}
+      - name: Build Release
+        run: dotnet build --no-restore --configuration Release /p:WarningsAsErrors=nullable /p:TargetOS=${{ matrix.targetOS }}

.github/workflows/build-test.yml

@@ -10,7 +10,7 @@ jobs:
   build:
     strategy:
       matrix:
-        os: [ubuntu-latest, windows-latest] # , macos-latest] - temporarily disabled due to libfreetype.dll errors.
+        os: [ubuntu-latest, windows-latest, macos-latest]
 
     runs-on: ${{ matrix.os }}
 

.github/workflows/publish-client.yml

@@ -26,7 +26,7 @@ jobs:
           dotnet-version: 9.0.x
 
       - name: Package client
-        run: Tools/package_client_build.py -p windows mac linux
+        run: Tools/package_client_build.py
 
       - name: Shuffle files around
         run: |

Directory.Packages.props

@@ -44,10 +44,11 @@
     <PackageVersion Include="NUnit3TestAdapter" Version="4.6.0" />
     <PackageVersion Include="Nett" Version="0.15.0" />
     <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.2" />
-    <PackageVersion Include="OpenTK.OpenAL" Version="4.7.7" />
+    <PackageVersion Include="OpenTK.Audio.OpenAL" Version="4.9.4" />
     <PackageVersion Include="OpenToolkit.Graphics" Version="4.0.0-pre9.1" />
     <PackageVersion Include="Pidgin" Version="3.3.0" />
-    <PackageVersion Include="Robust.Natives" Version="0.1.1" />
+    <PackageVersion Include="Robust.Natives" Version="0.2.3" />
+    <PackageVersion Include="Robust.Natives.Zstd" Version="0.1.1-zstd1.5.7" />
     <PackageVersion Include="Robust.Natives.Cef" Version="131.3.5" />
     <PackageVersion Include="Robust.Shared.AuthLib" Version="0.1.2" />
     <PackageVersion Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.1.10" />
@@ -55,11 +56,14 @@
     <PackageVersion Include="Serilog" Version="4.2.0" />
     <PackageVersion Include="Serilog.Sinks.Loki" Version="4.0.0-beta3" />
     <PackageVersion Include="SharpZstd.Interop" Version="1.5.2-beta2" />
-    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.7" />
+    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.11" />
     <PackageVersion Include="SpaceWizards.HttpListener" Version="0.1.1" />
     <PackageVersion Include="SpaceWizards.NFluidsynth" Version="0.2.2" />
-    <PackageVersion Include="SpaceWizards.SharpFont" Version="1.0.2" />
+    <PackageVersion Include="SpaceWizards.Sdl" Version="1.0.0" />
+    <PackageVersion Include="SpaceWizards.SharpFont" Version="1.1.0" />
     <PackageVersion Include="SpaceWizards.Sodium" Version="0.2.1" />
+    <PackageVersion Include="libsodium" Version="1.0.20.1" />
+    <PackageVersion Include="System.Management" Version="9.0.8" />
     <PackageVersion Include="TerraFX.Interop.Windows" Version="10.0.26100.1" />
     <PackageVersion Include="TerraFX.Interop.Xlib" Version="6.4.0" />
     <PackageVersion Include="VorbisPizza" Version="1.3.0" />

MSBuild/Robust.Engine.Version.props

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

MSBuild/XamlIL.targets

@@ -16,7 +16,10 @@
 
   <ItemGroup>
     <ProjectReference Include="$(MSBuildThisFileDirectory)\..\Robust.Client.NameGenerator\Robust.Client.NameGenerator.csproj" OutputItemType="Analyzer" ReferenceOutputAssembly="false"/>
-    <ProjectReference Include="$(MSBuildThisFileDirectory)\..\Robust.Client.Injectors\Robust.Client.Injectors.csproj" ReferenceOutputAssembly="false"/>
+    <ProjectReference Include="$(MSBuildThisFileDirectory)\..\Robust.Client.Injectors\Robust.Client.Injectors.csproj" ReferenceOutputAssembly="false">
+      <SetConfiguration Condition="'$(Configuration)' == 'DebugOpt'">Configuration=Debug</SetConfiguration>
+      <SetConfiguration Condition="'$(Configuration)' == 'Tools'">Configuration=Release</SetConfiguration>
+    </ProjectReference>
   </ItemGroup>
 
   <!-- XamlIL does not make use of special Robust configurations like DebugOpt. Convert these down. -->

RELEASE-NOTES.md

@@ -54,13 +54,333 @@ END TEMPLATE-->
 *None yet*
 
 
-## 263.0.3
+## 267.3.2
 
 
-## 263.0.2
+## 267.3.1
 
 
-## 263.0.1
+## 267.3.0
+
+### New features
+
+* Sandbox:
+  * Added `System.DateOnly` and `System.TimeOnly`.
+* `MapId`, `MapCoordinates`, and `EntityCoordinates` are now yaml serialisable
+* The base component tree lookup system has new methods including several new `QueryAabb()` overloads that take in a collection and various new `IntersectRay()` overloads that should replace `IntersectRayWithPredicate`.
+ * Added `OccluderSystem.InRangeUnoccluded()` for checking for occluders that lie between two points.
+* `LocalizedCommands` now pass the command name as an argument to the localized help text.
+
+### Bugfixes
+
+* Fixed `MapLoaderSystem.SerializeEntitiesRecursive()` not properly serialising when given multiple root entities (e.g., multiple maps)
+* Fixed yaml hot reloading throwing invalid path exceptions.
+* The `EntityManager.CreateEntityUninitialized` overload that uses MapCoordinates now actually attaches entities to a grid if one is present at those coordinates, as was stated in it's documentation.
+* Fixed physics joint relays not being properly updated when an entity is removed from a container.
+
+### Other
+
+* Updated natives again to attempt to fix issues caused by the previous update.
+
+
+## 267.2.1
+
+
+## 267.2.0
+
+### New features
+
+* Sprites and Sprite layers have a new `Loop` data field that can be set to false to automatically pause animations once they have finished.
+
+### Bugfixes
+
+* Fixed `CollectionExtensions.TryGetValue` throwing an exception when given a negative list index.
+* Fixed `EntityManager.PredictedQueueDeleteEntity()` not deferring changes for networked entities until the end of the tick.
+* Fixed `EntityManager.IsQueuedForDeletion` not returning true foe entities getting deleted via `PredictedQueueDeleteEntity()`
+
+### Other
+
+* `IResourceManager.GetContentRoots()` has been obsoleted and returns no more results.
+
+### Internal
+
+* `IResourceManager.GetContentRoots()` has been replaced with a similar method on `IResourceManagerInternal`. This new method returns `string`s instead of `ResPath`s, and usage code has been updated to use these paths correctly.
+
+
+## 267.1.0
+
+### New features
+
+* Animation:
+  * `AnimationTrackProperty.KeyFrame` can now have easings functions applied.
+* Graphics:
+  * `PointLightComponent` now has two fields, `falloff` and `curveFactor`, for controlling light falloff and the shape of the light attenuation curve.
+  * `IClydeViewport` now has an `Id` and `ClearCachedResources` event. Together, these allow you to properly cache rendering resources per viewport.
+* Miscellaneous:
+  * Added `display.max_fps` CVar.
+  * Added `IGameTiming.FrameStartTime`.
+* Sandbox:
+  * Added `System.WeakReference<T>`.
+  * Added `SpaceWizards.Sodium.CryptoGenericHashBlake2B.Hash()`.
+  * Added `System.Globalization.UnicodeCategory`.
+* Serialization:
+  * Added a new entity yaml deserialization option (`SerializationOptions.EntityExceptionBehaviour`) that can optionally make deserialization more exception tolerant.
+* Tooling:
+  * `devwindow` now has a tab listing active `IRenderTarget`s, allowing insight into resource consumption.
+  * `loadgrid` now creates a map if passed an invalid map ID.
+  * Added game version information to F3 overlay.
+  * Added completions to more map commands.
+* UI system:
+  * `Control.OrderedChildCollection` (gotten from `.Children`) now implements `IReadOnlyList<Control>`, allowing it to be indexed directly.
+    * Added `WrapContainer` control. This lays out multiple elements along an axis, wrapping them if there's not enough space. It comes with many options and can handle multiple axes.
+  * Popups/modals now work in secondary windows. This entails putting roots for these on each UI root.
+  * If you are not using `OSWindow` and are instead creating secondary windows manually, you need to call `WindowRoot.CreateRootControls()` manually for this to work.
+  * Added `Axis` enum, `IAxisImplementation` interface and axis implementations. These allow writing general-purpose UI layout code that can work on multiple axis at once.
+* WebView:
+  * Added `web.remote_debug_port` CVar to change Chromium's remote debug port.
+
+### Bugfixes
+
+* Audio:
+  * Fix audio occlusion & velocity being calculated with the audio entity instead of the source entity.
+* Bound UI:
+  * Try to fix an assert related to `UserInterfaceComponent` delta states.
+* Configuration:
+  * The client no longer tries to send `CLIENT | REPLICATED` CVars when not connected to a server. This could cause test failures.
+* Math:
+  * Fixed `Matrix3Helpers.TransformBounds()` returning an incorrect result. Now it effectively behaves like `Matrix3Helpers.TransformBox()` and has been marked as obsolete.
+* Physics:
+  * Work around an undiagnosed crash processing entities without parents.
+* Serialization:
+  * Fix `[DataRecord]`s with computed get-only properties.
+* Resources:
+  * Fix some edge case broken path joining in `DirLoader` and `WritableDirProvider`.
+* Tests:
+  * Fix `PlacementManager.CurrentMousePosition` in integration tests.
+* UI system:
+  * Animations for the debug console and scrolling are no longer framerate dependent.
+  * Fix `OutputPanel.SetMessage` triggering a scrolling animation when editing messages other than the last one.
+  * Fix word wrapping with two-`char` runes in `RichTextLabel` and `OutputPanel`.
+* WebView:
+  * Multiple clients with WebView can now run at the same time, thanks to better CEF cache management.
+
+### Other
+
+* Audio:
+  * Improved error logging for invalid file names in `SharedAudioSystem`.
+* Configuration:
+  * Fix crash if more than 255 `REPLICATED` CVars exist. Also increased the max size of the CVar replication message.
+* Entities:
+  * Transform:
+    * `AnchorEntity` logs instead of using an assert for invalid arguments.
+  * Containers:
+    * `SharedContainerSystem.CleanContainer` now uses `PredictedDel()` instead.
+* Networking:
+  * The client now logs an error when attempting to send a network message without server connection. Previously, it would be silently dropped.
+  * `net.interp` and `net.buffer_size` CVars are now `REPLICATED`.
+* Graphics:
+  * The function used for pointlight attenuation has been modified to be c1 continuous as opposed to simply c0 continuous, resulting in smoother boundary behavior.
+  * RSI validator no longer allows empty (`""`) state names.
+* Packaging:
+  * Server packaging now excludes all files in the `Audio/` directory.
+  * Server packaging now excludes engine resources `EngineFonts/` and `Midi/`.
+  * ACZ explicitly specifies manifest charset as UTF-8.
+* Serialization:
+  * `CurTime`-relative `TimeSpan` values that are `MaxValue` now deserialize without overflow.
+  * `SpriteSpecifier.Texture` will now fail to validate if the path is inside a `.rsi`. Use RSI sprite specifiers instead.
+* Resources:
+  * `IWritableDirProvider.RootDir` is now null on clients.
+* WebView:
+  * CEF cache is no longer in the content-accessible user data directory.
+
+### Internal
+
+* Added some debug commands for debugging viewport resource management: `vp_clear_all_cached` & `vp_test_finalize`
+* `uitest` command now supports command argument for tab selection, like `uitest2`.
+* Rewrote `BoxContainer` implementation to make use of new axis system.
+* Moved `uitest2` and `devwindow` to use the `OSWindow` control.
+* SDL3 binding has been moved to `SpaceWizards.Sdl` NuGet package.
+* `dmetamem` command has been moved from `DEBUG` to `TOOLS`.
+* Consolidate `AttachToGridOrMap` with `TryGetMapOrGridCoordinates`.
+* Secondary window render targets have clear names specified.
+* Updated `SpaceWizards.NFluidsynth` to `0.2.2`.
+* `Robust.Client.WebView.Cef.Program` is now internal.
+* `download_manifest_file.py` script in repo now always decodes as UTF-8 correctly.
+* Added a new debug assert to game state processing.
+
+## 267.0.0
+
+### Breaking changes
+
+* When a player disconnects, the relevant callbacks are now fired *after* removing the channel from `INetManager`.
+
+### New features
+
+* Engine builds are now published for ARM64 & FreeBSD.
+* CPU model names are now detected on Windows & Linux ARM64.
+* Toolshed's `spawn:in` command now works on entities without `Physics` component.
+
+### Bugfixes
+
+* SDL3 windowing backend fixes:
+  * Avoid macOS freezes with multiple windows.
+  * Fix macOS rendering breaking when closing secondary windows.
+  * File dialogs properly associate parent windows.
+  * Fix IME positions not working with UI scaling properly.
+  * Properly specify library names for loading native library.
+
+* WinBit threads don't permanently stay stuck when their window closes.
+* Checking for the "`null`" literal in serialization is now culture invariant.
+
+### Other
+
+* Compat mode on the client now defaults to on for Windows Snapdragon devices, to work around driver bugs.
+* Update various libraries & natives. This enables out-of-the-box ARM64 support on all platforms and is a long-overdue modernization.
+* Key name displays now use proper Unicode symbols for macOS ⌥ and ⌘.
+* Automated CI for RobustToolbox runs on macOS again.
+* Autocompletions for `ProtoId<T>` in Toolshed now use `PrototypeIdsLimited` instead of arbitrarily cutting out if more than 256 of a prototype exists.
+
+
+## 266.0.0
+
+### Breaking changes
+
+* A new analyzer has been added that will error if you attempt to subscribe to `AfterAutoHandleStateEvent` on a
+  component that doesn't have the `AutoGenerateComponentState` attribute, or doesn't have the first argument of that
+  attribute set to `true`. In most cases you will want to set said argument to `true`.
+* The fields on `AutoGenerateComponentStateAttribute` are now `readonly`. Setting these directly (instead of using the constructor arguments) never worked in the first place, so this change only catches existing programming errors.
+* When a player disconnects, `ISharedPlayerManager.PlayerStatusChanged` is now fired *after* removing the session from the `Sessions` list.
+* `.rsi` files are now compacted into individual `.rsic` files on packaging. This should significantly reduce file count & improve performance all over release builds, but breaks the ability to access `.png` files into RSIs directly. To avoid this, `"rsic": false` can be specified in the RSI's JSON metadata.
+* The `scale` command has been removed, with the intent of it being moved to content instead.
+
+### New features
+
+* ViewVariables editors for `ProtoId` fields now have a Select button which opens a window listing all available prototypes of the appropriate type.
+* added **IConfigurationManager**.*SubscribeMultiple* ext. method to provide simpler way to unsubscribe from multiple cvar at once
+* Added `SharedMapSystem.QueueDeleteMap`, which deletes a map with the specified MapId in the next tick.
+* Added generic version of `ComponentRegistry.TryGetComponent`.
+* `AttributeHelper.HasAttribute` has had an overload's type signature loosened from `INamedTypeSymbol` to `ITypeSymbol`.
+* Errors are now logged when sending messages to disconnected `INetChannel`s.
+* Warnings are now logged if sending a message via Lidgren failed for some reason.
+* `.yml` and `.ftl` files in the same directory are now concatenated onto each other, to reduce file count in packaged builds. This is done through the new `AssetPassMergeTextDirectories` pass.
+* Added `System.Linq.ImmutableArrayExtensions` to sandbox.
+* `ImmutableDictionary<TKey, TValue>` and `ImmutableHashSet<T>` can now be network serialized.
+* `[AutoPausedField]` now works on fields of type `Dictionary<TKey, TimeSpan>`.
+* `[NotYamlSerializable]` analyzer now detects nullable fields of the not-serializable type.
+* `ItemList` items can now have a scale applied for the icon.
+* Added new OS mouse cursor shapes for the SDL3 backend. These are not available on the GLFW backend.
+* Added `IMidiRenderer.MinVolume` to scale the volume of MIDI notes.
+* Added `SharedPhysicsSystem.ScaleFixtures`, to apply the physics-only changes of the prior `scale` command.
+
+### Bugfixes
+
+* `LayoutContainer.SetMarginsPreset` and `SetAnchorAndMarginPreset` now correctly use the provided control's top anchor when calculating the margins for its presets; it previously used the bottom anchor instead. This may result in a few UI differences, by a few pixels at most.
+* `IConfigurationManager` no longer logs a warning when saving configuration in an integration test.
+* Fixed impossible-to-source `ChannelClosedException`s when sending some net messages to disconnected `INetChannel`s.
+* Fixed an edge case causing some color values to throw an error in `ColorNaming`.
+* Fresh builds from specific projects should no longer cause errors related to `Robust.Client.Injectors` not being found.
+* Stopped errors getting logged about `NoteOff` and `NoteOn` operations failing in MIDI.
+* Fixed MIDI players not resuming properly when re-entering PVS range.
+
+### Other
+
+* Updated ImageSharp to 3.1.11 to stop the warning about a DoS vulnerability.
+* Prototype YAML documents that are completely empty are now skipped by the prototype loader. Previously they would cause a load error for the whole file.
+* `TileSpawnWindow` can now be localized.
+* `BaseWindow` uses the new mouse cursor shapes for diagonal resizing.
+* `NFluidsynth` has been updated to 0.2.0
+
+### Internal
+
+* Added `uitest` tab for standard mouse cursor shapes.
+
+
+## 265.0.0
+
+### Breaking changes
+
+* More members in `IntegrationInstance` now enforce that the instance is idle before accessing it.
+* `Prototype.ValidateDirectory` now requires that prototype IDs have no spaces or periods in them.
+* `IPrototypeManager.TryIndex` no longer logs errors unless using the overload with an optional parameter. Use `Resolve()` instead if error logging is desired.
+* `LocalizedCommands` now has a `Loc` property that refers to `LocalizationManager`. This can cause compile failures if you have static methods in child types that referenced static `Loc`.
+* `[AutoGenerateComponentState]` now works on parent members for inherited classes. This can cause compile failures in certain formerly silently broken cases with overriden properties.
+* `Vector3`, `Vector4`, `Quaternion`, and `Matrix4` have been removed from `Robust.Shared.Maths`. Use the `System.Numerics` types instead.
+
+### New features
+
+* `RobustClientPackaging.WriteClientResources()` and `RobustServerPackaging.WriteServerResources()` now have an overload taking in a set of things to ignore in the content resources directory.
+* Added `IPrototypeManager.Resolve()`, which logs an error if the resolved prototype does not exist. This is effectively the previous (but not original) default behavior of `IPrototypeManager.TryIndex`.
+* There's now a ViewVariables property editor for tuples.
+* Added `ColorNaming` helper functions for getting textual descriptions of color values.
+* Added Oklab/Oklch conversion functions for `Color`.
+* `ColorSelectorSliders` now displays textual descriptions of color values.
+* Added `TimeSpanExt.TryTimeSpan` to parse `TimeSpan`s with the `1.5h` format available in YAML.
+* Added `ITestContextLike` and related classes to allow controlling pooled integration instances better.
+* `EntProtoId` VV prop editors now don't allow setting invalid prototype IDs, inline with `ProtoId<T>`.
+* Custom VV controls can now be registered using `IViewVariableControlFactory`.
+* The entity spawn window now shows all placement modes registered with `IPlacementManager`.
+* Added `VectorHelpers.InterpolateCubic` for `System.Numerics` `Vector3` and `Vector4`.
+* Added deconstruct helpers for `System.Numerics` `Vector3` and `Vector4`.
+
+### Bugfixes
+
+* Pooled integration instances returned by `RobustIntegrationTest` are now treated as non-idle, for consistency with non-pooled startups.
+* `SharedAudioSystem.SetState` no longer calls `DirtyField` on `PlaybackPosition`, an unnetworked field.
+* Fix loading texture files from the root directory.
+* Fix integration test pooling leaking non-reusable instances.
+* Fix multiple bugs where VV displayed the wrong property editor for remote values.
+* VV displays group headings again in member list.
+* Fix a stack overflow that could occur with `ColorSelectorSliders`.
+* `MidiRenderer` now properly handles `NoteOn` events with 0 velocity (which should actually be treated as `NoteOff` events).
+
+### Other
+
+* The debug assert for `RobustRandom.Next(TimeSpan, TimeSpan)` now allows for the two arguments to be equal.
+* The configuration system will now report an error instead of warning if it fails to load the config file.
+* Members in `IntegrationInstance` that enforce the instance is idle now always allow access from the instance's thread (e.g. from a callback).
+* `IPrototypeManager` methods now have `[ForbidLiteral]` where appropriate.
+* Performance improvements to physics system.
+* `[ValidatePrototypeIdAttribute]` has been marked as obsolete.
+* `ParallelManager` no longer cuts out exception information for caught job exceptions.
+* Improved logging for PVS uninitialized/deleted entity errors.
+
+### Internal
+
+* General code & warning cleanup.
+* Fix `VisibilityTest` being unreliable.
+* `ColorSelectorSliders` has been internally refactored.
+* Added CI workflows that test all RT build configurations.
+
+## 264.0.0
+
+### Breaking changes
+
+* `IPrototypeManager.Index(Type kind, string id)` now throws `UnknownPrototypeException` instead of `KeyNotFoundException`, for consistency with `IPrototypeManager.Index<T>`.
+
+### New features
+
+* Types can now implement the new interface `IRobustCloneable<T>` to be cloned by the component state source generator.
+* Added extra Roslyn Analyzers to detect some misuse of prototypes:
+  * Network serializing prototypes (tagging them with `[Serializable, NetSerializable]`).
+  * Constructing new instances of prototypes directly.
+* Add `PrototypeManagerExt.Index` helper function that takes a nullable `ProtoId<T>`, returning null if the ID is null.
+* Added an `AlwaysActive` field to `WebViewControl` to make a browser window active even when not in the UI tree.
+* Made some common dependencies accessible through `IPlacementManager`.
+* Added a new `GENITIVE()` localization helper function, which is useful for certain languages.
+
+### Bugfixes
+
+* Sprite scale is now correctly applied to sprite boundaries in `SpriteSystem.GetLocalBounds`.
+* Fixed documentation for `IPrototypeManager.Index<T>` stating that `KeyNotFoundException` gets thrown, when in actuality `UnknownPrototypeException` gets thrown.
+
+### Other
+
+* More tiny optimizations to `DataDefinitionAnalyzer`.
+* NetSerializer has been updated. On debug, it will now report *where* a type that can't be serialized is referenced from.
+
+### Internal
+
+* Minor internal code cleanup.
 
 
 ## 263.0.0

Resources/Locale/en-US/_engine_lib.ftl

@@ -21,7 +21,8 @@ zzzz-object-pronoun = { GENDER($ent) ->
    }
 
 # Used internally by the DAT-OBJ() function.
-# Not used in en-US. Created for supporting other languages.
+# Not used in en-US. Created to support other languages.
+# (e.g., "to him," "for her")
 zzzz-dat-object = { GENDER($ent) ->
     [male] him
     [female] her
@@ -29,6 +30,16 @@ zzzz-dat-object = { GENDER($ent) ->
    *[neuter] it
    }
 
+# Used internally by the GENITIVE() function.
+# Not used in en-US. Created to support other languages.
+# e.g., "у него" (Russian), "seines Vaters" (German).
+zzzz-genitive = { GENDER($ent) ->
+    [male] his
+    [female] her
+    [epicene] their
+   *[neuter] its
+   }
+
 # Used internally by the POSS-PRONOUN() function.
 zzzz-possessive-pronoun = { GENDER($ent) ->
     [male] his

Resources/Locale/en-US/_generic.ftl

@@ -0,0 +1,3 @@
+generic-map = map
+generic-grid = grid
+generic-mapid = map Id

Resources/Locale/en-US/client-state-commands.ftl

@@ -1,16 +1,16 @@
 # Loc strings for various entity state & client-side PVS related commands
 
-cmd-reset-ent-help = Usage: resetent <Entity UID>
-cmd-reset-ent-desc = Reset an entity to the most recently received server state. This will also reset entities that have been detached to null-space. 
+cmd-reset-ent-help = Usage: {$command} <Entity UID>
+cmd-reset-ent-desc = Reset an entity to the most recently received server state. This will also reset entities that have been detached to null-space.
 
-cmd-reset-all-ents-help = Usage: resetallents
-cmd-reset-all-ents-desc = Resets all entities to the most recently received server state. This only impacts entities that have not been detached to null-space. 
+cmd-reset-all-ents-help = Usage: {$command}
+cmd-reset-all-ents-desc = Resets all entities to the most recently received server state. This only impacts entities that have not been detached to null-space.
 
-cmd-detach-ent-help = Usage: detachent <Entity UID>
+cmd-detach-ent-help = Usage: {$command} <Entity UID>
 cmd-detach-ent-desc = Detach an entity to null-space, as if it had left PVS range.
 
-cmd-local-delete-help = Usage: localdelete <Entity UID>
+cmd-local-delete-help = Usage: {$command} <Entity UID>
 cmd-local-delete-desc = Deletes an entity. Unlike the normal delete command, this is CLIENT-SIDE. Unless the entity is a client-side entity, this will likely cause errors.
 
-cmd-full-state-reset-help = Usage: fullstatereset
+cmd-full-state-reset-help = Usage: {$command}
 cmd-full-state-reset-desc = Discards any entity state information and requests a full-state from the server.

Resources/Locale/en-US/color-naming.ftl

@@ -0,0 +1,33 @@
+color-hue-chroma-lightness = {$lightness} {$chroma} {$hue}
+color-hue-chroma = {$chroma} {$hue}
+color-hue-lightness = {$lightness} {$hue}
+color-very-dark = very dark
+color-dark = dark
+color-light = light
+color-very-light = very light
+color-mixed-hue = {$a} {$b}
+color-pale = pale
+color-gray-adjective = gray
+color-strong = strong
+color-pink = pink
+color-red = red
+color-orange = orange
+color-yellow = yellow
+color-green = green
+color-cyan = cyan
+color-blue = blue
+color-purple = purple
+color-brown = brown
+color-white = white
+color-gray = gray
+color-black = black
+color-unknown = unknown color, you should not see this
+
+color-pink-color-red = pinkish red
+color-red-color-orange = reddish orange
+color-orange-color-yellow = orangeish yellow
+color-yellow-color-green = yellowish green
+color-green-color-cyan = greenish cyan
+color-cyan-color-blue = cyanish blue
+color-blue-color-purple = blueish purple
+color-purple-color-pink = purpleish pink

Resources/Locale/en-US/commands.ftl

@@ -23,8 +23,8 @@ cmd-error-dir-not-found = Could not find directory: {$dir}.
 cmd-failure-no-attached-entity = There is no entity attached to this shell.
 
 ## 'help' command
-cmd-help-desc = Display general help or help text for a specific command
-cmd-help-help = Usage: help [command name]
+cmd-help-desc = Display general help or help text for a specific command.
+cmd-help-help = Usage: {$command} [command name]
     When no command name is provided, displays general-purpose help text. If a command name is provided, displays help text for that command.
 
 cmd-help-no-args = To display help for a specific command, write 'help <command>'. To list all available commands, write 'list'. To search for commands, use 'list <filter>'.
@@ -35,7 +35,7 @@ cmd-help-arg-cmdname = [command name]
 
 ## 'cvar' command
 cmd-cvar-desc = Gets or sets a CVar.
-cmd-cvar-help = Usage: cvar <name | ?> [value]
+cmd-cvar-help = Usage: {$command} <name | ?> [value]
     If a value is passed, the value is parsed and stored as the new value of the CVar.
     If not, the current value of the CVar is displayed.
     Use 'cvar ?' to get a list of all registered CVars.
@@ -49,14 +49,14 @@ cmd-cvar-value-hidden = <value hidden>
 
 ## 'cvar_subs' command
 cmd-cvar_subs-desc = Lists the OnValueChanged subscriptions for a CVar.
-cmd-cvar_subs-help = Usage: cvar_subs <name>
+cmd-cvar_subs-help = Usage: {$command} <name>
 
 cmd-cvar_subs-invalid-args = Must provide exactly one argument.
 cmd-cvar_subs-arg-name = <name>
 
 ## 'list' command
-cmd-list-desc = Lists available commands, with optional search filter
-cmd-list-help = Usage: list [filter]
+cmd-list-desc = Lists available commands, with optional search filter.
+cmd-list-help = Usage: {$command} [filter]
     Lists all available commands. If an argument is provided, it will be used to filter commands by name.
 
 cmd-list-heading = SIDE NAME            DESC{"\u000A"}-------------------------{"\u000A"}
@@ -64,13 +64,13 @@ cmd-list-heading = SIDE NAME            DESC{"\u000A"}-------------------------{
 cmd-list-arg-filter = [filter]
 
 ## '>' command, aka remote exec
-cmd-remoteexec-desc = Executes server-side commands
+cmd-remoteexec-desc = Executes server-side commands.
 cmd-remoteexec-help = Usage: > <command> [arg] [arg] [arg...]
     Executes a command on the server. This is necessary if a command with the same name exists on the client, as simply running the command would run the client command first.
 
 ## 'gc' command
-cmd-gc-desc = Run the GC (Garbage Collector)
-cmd-gc-help = Usage: gc [generation]
+cmd-gc-desc = Run the GC (Garbage Collector).
+cmd-gc-help = Usage: {$command} [generation]
     Uses GC.Collect() to execute the Garbage Collector.
     If an argument is provided, it is parsed as a GC generation number and GC.Collect(int) is used.
     Use the 'gfc' command to do an LOH-compacting full GC.
@@ -79,13 +79,13 @@ cmd-gc-arg-generation = [generation]
 
 ## 'gcf' command
 cmd-gcf-desc = Run the GC, fully, compacting LOH and everything.
-cmd-gcf-help = Usage: gcf
+cmd-gcf-help = Usage: {$command}
     Does a full GC.Collect(2, GCCollectionMode.Forced, true, true) while also compacting LOH.
     This will probably lock up for hundreds of milliseconds, be warned.
 
 ## 'gc_mode' command
-cmd-gc_mode-desc = Change/Read the GC Latency mode
-cmd-gc_mode-help = Usage: gc_mode [type]
+cmd-gc_mode-desc = Change/Read the GC Latency mode.
+cmd-gc_mode-help = Usage: {$command} [type]
     If no argument is provided, returns the current GC latency mode.
     If an argument is passed, it is parsed as GCLatencyMode and set as the GC latency mode.
 
@@ -98,8 +98,8 @@ cmd-gc_mode-result = resulting gc latency mode: { $mode }
 cmd-gc_mode-arg-type = [type]
 
 ## 'mem' command
-cmd-mem-desc = Prints managed memory info
-cmd-mem-help = Usage: mem
+cmd-mem-desc = Prints managed memory info.
+cmd-mem-help = Usage: {$command}
 
 cmd-mem-report = Heap Size: { TOSTRING($heapSize, "N0") }
     Total Allocated: { TOSTRING($totalAllocated, "N0") }
@@ -108,26 +108,26 @@ cmd-mem-report = Heap Size: { TOSTRING($heapSize, "N0") }
 cmd-physics-overlay = {$overlay} is not a recognised overlay
 
 ## 'lsasm' command
-cmd-lsasm-desc = Lists loaded assemblies by load context
+cmd-lsasm-desc = Lists loaded assemblies by load context.
 cmd-lsasm-help = Usage: lsasm
 
 ## 'exec' command
-cmd-exec-desc = Executes a script file from the game's writeable user data
-cmd-exec-help = Usage: exec <fileName>
+cmd-exec-desc = Executes a script file from the game's writeable user data.
+cmd-exec-help = Usage: {$command} <fileName>
     Each line in the file is executed as a single command, unless it starts with a #
 
 cmd-exec-arg-filename = <fileName>
 
 ## 'dump_net_comps' command
 cmd-dump_net_comps-desc = Prints the table of networked components.
-cmd-dump_net_comps-help = Usage: dump_net-comps
+cmd-dump_net_comps-help = Usage: {$command}
 
 cmd-dump_net_comps-error-writeable = Registration still writeable, network ids have not been generated.
 cmd-dump_net_comps-header = Networked Component Registrations:
 
 ## 'dump_event_tables' command
 cmd-dump_event_tables-desc = Prints directed event tables for an entity.
-cmd-dump_event_tables-help = Usage: dump_event_tables <entityUid>
+cmd-dump_event_tables-help = Usage: {$command} <entityUid>
 
 cmd-dump_event_tables-missing-arg-entity = Missing entity argument
 cmd-dump_event_tables-error-entity = Invalid entity
@@ -135,7 +135,7 @@ cmd-dump_event_tables-arg-entity = <entityUid>
 
 ## 'monitor' command
 cmd-monitor-desc = Toggles a debug monitor in the F3 menu.
-cmd-monitor-help = Usage: monitor <name>
+cmd-monitor-help = Usage: {$command} <name>
     Possible monitors are: { $monitors }
     You can also use the special values "-all" and "+all" to hide or show all monitors, respectively.
 
@@ -148,13 +148,13 @@ cmd-monitor-plus-all-hint = Shows all monitors
 
 ## 'setambientlight' command
 cmd-set-ambient-light-desc = Allows you to set the ambient light for the specified map, in SRGB.
-cmd-set-ambient-light-help = setambientlight [mapid] [r g b a]
+cmd-set-ambient-light-help = Usage: {$command} [mapid] [r g b a]
 cmd-set-ambient-light-parse = Unable to parse args as a byte values for a color.
 
 ## Mapping commands
 
 cmd-savemap-desc = Serializes a map to disk. Will not save a post-init map unless forced.
-cmd-savemap-help = savemap <MapID> <Path> [force]
+cmd-savemap-help = Usage: {$command} <MapID> <Path> [force]
 cmd-savemap-not-exist = Target map does not exist.
 cmd-savemap-init-warning = Attempted to save a post-init map without forcing the save.
 cmd-savemap-attempt = Attempting to save map {$mapId} to {$path}.
@@ -165,7 +165,7 @@ cmd-hint-savemap-path = <Path>
 cmd-hint-savemap-force = [bool]
 
 cmd-loadmap-desc = Loads a map from disk into the game.
-cmd-loadmap-help = loadmap <MapID> <Path> [x] [y] [rotation] [consistentUids]
+cmd-loadmap-help = Usage: {$command} <MapID> <Path> [x] [y] [rotation] [consistentUids]
 cmd-loadmap-nullspace = You cannot load into map 0.
 cmd-loadmap-exists = Map {$mapId} already exists.
 cmd-loadmap-success = Map {$mapId} has been loaded from {$path}.
@@ -180,73 +180,74 @@ cmd-hint-savebp-id = <Grid EntityID>
 ## 'flushcookies' command
 # Note: the flushcookies command is from Robust.Client.WebView, it's not in the main engine code.
 
-cmd-flushcookies-desc = Flush CEF cookie storage to disk
-cmd-flushcookies-help = This ensure cookies are properly saved to disk in the event of unclean shutdowns.
+cmd-flushcookies-desc = Flush CEF cookie storage to disk.
+cmd-flushcookies-help = Usage: {$command}
+    This ensure cookies are properly saved to disk in the event of unclean shutdowns.
     Note that the actual operation is asynchronous.
 
 cmd-ldrsc-desc = Pre-caches a resource.
-cmd-ldrsc-help = Usage: ldrsc <path> <type>
+cmd-ldrsc-help = Usage: {$command} <path> <type>
 
 cmd-rldrsc-desc = Reloads a resource.
-cmd-rldrsc-help = Usage: rldrsc <path> <type>
+cmd-rldrsc-help = Usage: {$command} <path> <type>
 
 cmd-gridtc-desc = Gets the tile count of a grid.
-cmd-gridtc-help = Usage: gridtc <gridId>
+cmd-gridtc-help = Usage: {$command} <gridId>
 
 
 # Client-side commands
 cmd-guidump-desc = Dump GUI tree to /guidump.txt in user data.
-cmd-guidump-help = Usage: guidump
+cmd-guidump-help = Usage: {$command}
 
-cmd-uitest-desc = Open a dummy UI testing window
-cmd-uitest-help = Usage: uitest
+cmd-uitest-desc = Open a dummy UI testing window.
+cmd-uitest-help = Usage: {$command}
 
 ## 'uitest2' command
-cmd-uitest2-desc = Opens a UI control testing OS window
-cmd-uitest2-help = Usage: uitest2 <tab>
+cmd-uitest2-desc = Opens a UI control testing OS window.
+cmd-uitest2-help = Usage: {$command} <tab>
 cmd-uitest2-arg-tab = <tab>
 cmd-uitest2-error-args = Expected at most one argument
 cmd-uitest2-error-tab = Invalid tab: '{$value}'
 cmd-uitest2-title = UITest2
 
 
-cmd-setclipboard-desc = Sets the system clipboard
-cmd-setclipboard-help = Usage: setclipboard <text>
+cmd-setclipboard-desc = Sets the system clipboard.
+cmd-setclipboard-help = Usage: {$command} <text>
 
-cmd-getclipboard-desc = Gets the system clipboard
-cmd-getclipboard-help = Usage: Getclipboard
+cmd-getclipboard-desc = Gets the system clipboard.
+cmd-getclipboard-help = Usage: {$command}
 
 cmd-togglelight-desc = Toggles light rendering.
-cmd-togglelight-help = Usage: togglelight
+cmd-togglelight-help = Usage: {$command}
 
 cmd-togglefov-desc = Toggles fov for client.
-cmd-togglefov-help = Usage: togglefov
+cmd-togglefov-help = Usage: {$command}
 
 cmd-togglehardfov-desc = Toggles hard fov for client. (for debugging space-station-14#2353)
-cmd-togglehardfov-help = Usage: togglehardfov
+cmd-togglehardfov-help = Usage: {$command}
 
 cmd-toggleshadows-desc = Toggles shadow rendering.
-cmd-toggleshadows-help = Usage: toggleshadows
+cmd-toggleshadows-help = Usage: {$command}
 
 cmd-togglelightbuf-desc = Toggles lighting rendering. This includes shadows but not FOV.
-cmd-togglelightbuf-help = Usage: togglelightbuf
+cmd-togglelightbuf-help = Usage: {$command}
 
 cmd-chunkinfo-desc = Gets info about a chunk under your mouse cursor.
-cmd-chunkinfo-help = Usage: chunkinfo
+cmd-chunkinfo-help = Usage: {$command}
 
 cmd-rldshader-desc = Reloads all shaders.
-cmd-rldshader-help = Usage: rldshader
+cmd-rldshader-help = Usage: {$command}
 
 cmd-cldbglyr-desc = Toggle fov and light debug layers.
-cmd-cldbglyr-help= Usage: cldbglyr <layer>: Toggle <layer>
+cmd-cldbglyr-help= Usage: {$command} <layer>: Toggle <layer>
     cldbglyr: Turn all Layers off
 
 cmd-key-info-desc = Keys key info for a key.
-cmd-key-info-help = Usage: keyinfo <Key>
+cmd-key-info-help = Usage: {$command} <Key>
 
 ## 'bind' command
 cmd-bind-desc = Binds an input key combination to an input command.
-cmd-bind-help = Usage: bind { cmd-bind-arg-key } { cmd-bind-arg-mode } { cmd-bind-arg-command }
+cmd-bind-help = Usage: {$command} { cmd-bind-arg-key } { cmd-bind-arg-mode } { cmd-bind-arg-command }
     Note that this DOES NOT automatically save bindings.
     Use the 'svbind' command to save binding configuration.
 
@@ -255,319 +256,322 @@ cmd-bind-arg-mode = <BindMode>
 cmd-bind-arg-command = <InputCommand>
 
 cmd-net-draw-interp-desc = Toggles the debug drawing of the network interpolation.
-cmd-net-draw-interp-help = Usage: net_draw_interp
+cmd-net-draw-interp-help = Usage: {$command}
 
 cmd-net-watch-ent-desc = Dumps all network updates for an EntityId to the console.
-cmd-net-watch-ent-help = Usage: net_watchent <0|EntityUid>
+cmd-net-watch-ent-help = Usage: {$command} <0|EntityUid>
 
 cmd-net-refresh-desc = Requests a full server state.
-cmd-net-refresh-help = Usage: net_refresh
+cmd-net-refresh-help = Usage: {$command}
 
 cmd-net-entity-report-desc = Toggles the net entity report panel.
-cmd-net-entity-report-help = Usage: net_entityreport
+cmd-net-entity-report-help = Usage: {$command}
 
 cmd-fill-desc = Fill up the console for debugging.
-cmd-fill-help = Fills the console with some nonsense for debugging.
+cmd-fill-help = Usage: {$command}
+                Fills the console with some nonsense for debugging.
 
 cmd-cls-desc = Clears the console.
-cmd-cls-help = Clears the debug console of all messages.
+cmd-cls-help = Usage: {$command}
+               Clears the debug console of all messages.
 
 cmd-sendgarbage-desc = Sends garbage to the server.
-cmd-sendgarbage-help = The server will reply with 'no u'
+cmd-sendgarbage-help = Usage: {$command}
+                       The server will reply with 'no u'
 
 cmd-loadgrid-desc = Loads a grid from a file into an existing map.
-cmd-loadgrid-help = loadgrid <MapID> <Path> [x y] [rotation] [storeUids]
+cmd-loadgrid-help = Usage: {$command} <MapID> <Path> [x y] [rotation] [storeUids]
 
 cmd-loc-desc = Prints the absolute location of the player's entity to console.
-cmd-loc-help = loc
+cmd-loc-help = Usage: {$command}
 
 cmd-tpgrid-desc = Teleports a grid to a new location.
-cmd-tpgrid-help = tpgrid <gridId> <X> <Y> [<MapId>]
+cmd-tpgrid-help = Usage: {$command} <gridId> <X> <Y> [<MapId>]
 
 cmd-rmgrid-desc = Removes a grid from a map. You cannot remove the default grid.
-cmd-rmgrid-help = rmgrid <gridId>
+cmd-rmgrid-help = Usage: {$command} <gridId>
 
 cmd-mapinit-desc = Runs map init on a map.
-cmd-mapinit-help = mapinit <mapID>
+cmd-mapinit-help = Usage: {$command} <mapID>
 
 cmd-lsmap-desc = Lists maps.
-cmd-lsmap-help = lsmap
+cmd-lsmap-help = Usage: {$command}
 
 cmd-lsgrid-desc = Lists grids.
-cmd-lsgrid-help = lsgrid
+cmd-lsgrid-help = Usage: {$command}
 
 cmd-addmap-desc = Adds a new empty map to the round. If the mapID already exists, this command does nothing.
-cmd-addmap-help = addmap <mapID> [pre-init]
+cmd-addmap-help = Usage: {$command} <mapID> [pre-init]
 
 cmd-rmmap-desc = Removes a map from the world. You cannot remove nullspace.
-cmd-rmmap-help = rmmap <mapId>
+cmd-rmmap-help = Usage: {$command} <mapId>
 
 cmd-savegrid-desc = Serializes a grid to disk.
-cmd-savegrid-help = savegrid <gridID> <Path>
+cmd-savegrid-help = Usage: {$command} <gridID> <Path>
 
 cmd-testbed-desc = Loads a physics testbed on the specified map.
-cmd-testbed-help = testbed <mapid> <test>
+cmd-testbed-help = Usage: {$command} <mapid> <test>
 
 ## 'flushcookies' command
 # Note: the flushcookies command is from Robust.Client.WebView, it's not in the main engine code.
 
 ## 'addcomp' command
 cmd-addcomp-desc = Adds a component to an entity.
-cmd-addcomp-help = addcomp <uid> <componentName>
+cmd-addcomp-help = Usage: {$command} <uid> <componentName>
 cmd-addcompc-desc = Adds a component to an entity on the client.
-cmd-addcompc-help = addcompc <uid> <componentName>
+cmd-addcompc-help = Usage: {$command} <uid> <componentName>
 
 ## 'rmcomp' command
 cmd-rmcomp-desc = Removes a component from an entity.
-cmd-rmcomp-help = rmcomp <uid> <componentName>
+cmd-rmcomp-help = Usage: {$command} <uid> <componentName>
 cmd-rmcompc-desc = Removes a component from an entity on the client.
-cmd-rmcompc-help = rmcomp <uid> <componentName>
+cmd-rmcompc-help = Usage: {$command} <uid> <componentName>
 
 ## 'addview' command
 cmd-addview-desc = Allows you to subscribe to an entity's view for debugging purposes.
-cmd-addview-help = addview <entityUid>
+cmd-addview-help = Usage: {$command} <entityUid>
 cmd-addviewc-desc = Allows you to subscribe to an entity's view for debugging purposes.
-cmd-addviewc-help = addview <entityUid>
+cmd-addviewc-help = Usage: {$command} <entityUid>
 
 ## 'removeview' command
 cmd-removeview-desc = Allows you to unsubscribe to an entity's view for debugging purposes.
-cmd-removeview-help = removeview <entityUid>
+cmd-removeview-help = Usage: {$command} <entityUid>
 
 ## 'loglevel' command
 cmd-loglevel-desc = Changes the log level for a provided sawmill.
-cmd-loglevel-help = Usage: loglevel <sawmill> <level>
+cmd-loglevel-help = Usage: {$command} <sawmill> <level>
       sawmill: A label prefixing log messages. This is the one you're setting the level for.
       level: The log level. Must match one of the values of the LogLevel enum.
 
 cmd-testlog-desc = Writes a test log to a sawmill.
-cmd-testlog-help = Usage: testlog <sawmill> <level> <message>
+cmd-testlog-help = Usage: {$command} <sawmill> <level> <message>
     sawmill: A label prefixing the logged message.
     level: The log level. Must match one of the values of the LogLevel enum.
     message: The message to be logged. Wrap this in double quotes if you want to use spaces.
 
 ## 'vv' command
 cmd-vv-desc = Opens View Variables.
-cmd-vv-help = Usage: vv <entity ID|IoC interface name|SIoC interface name>
+cmd-vv-help = Usage: {$command} <entity ID|IoC interface name|SIoC interface name>
 
 ## 'showvelocities' command
 cmd-showvelocities-desc = Displays your angular and linear velocities.
-cmd-showvelocities-help = Usage: showvelocities
+cmd-showvelocities-help = Usage: {$command}
 
 ## 'setinputcontext' command
 cmd-setinputcontext-desc = Sets the active input context.
-cmd-setinputcontext-help = Usage: setinputcontext <context>
+cmd-setinputcontext-help = Usage: {$command} <context>
 
 ## 'forall' command
 cmd-forall-desc = Runs a command over all entities with a given component.
-cmd-forall-help = Usage: forall <bql query> do <command...>
+cmd-forall-help = Usage: {$command} <bql query> do <command...>
 
 ## 'delete' command
 cmd-delete-desc = Deletes the entity with the specified ID.
-cmd-delete-help = delete <entity UID>
+cmd-delete-help = Usage: {$command} <entity UID>
 
 # System commands
 cmd-showtime-desc = Shows the server time.
-cmd-showtime-help = showtime
+cmd-showtime-help = Usage: {$command}
 
 cmd-restart-desc = Gracefully restarts the server (not just the round).
-cmd-restart-help = restart
+cmd-restart-help = Usage: {$command}
 
 cmd-shutdown-desc = Gracefully shuts down the server.
-cmd-shutdown-help = shutdown
+cmd-shutdown-help = Usage: {$command}
 
 cmd-saveconfig-desc = Saves the server configuration to the config file.
-cmd-saveconfig-help = saveconfig
+cmd-saveconfig-help = Usage: {$command}
 
 cmd-netaudit-desc = Prints into about NetMsg security.
-cmd-netaudit-help = netaudit
+cmd-netaudit-help = Usage: {$command}
 
 # Player commands
 cmd-tp-desc = Teleports a player to any location in the round.
-cmd-tp-help = tp <x> <y> [<mapID>]
+cmd-tp-help = Usage: {$command} <x> <y> [<mapID>]
 
 cmd-tpto-desc = Teleports the current player or the specified players/entities to the location of the first player/entity.
-cmd-tpto-help = tpto <username|uid> [username|NetEntity]...
+cmd-tpto-help = Usage: {$command} <username|uid> [username|NetEntity]...
 cmd-tpto-destination-hint = destination (NetEntity or username)
 cmd-tpto-victim-hint = entity to teleport (NetEntity or username)
 cmd-tpto-parse-error = Cant resolve entity or player: {$str}
 
 cmd-listplayers-desc = Lists all players currently connected.
-cmd-listplayers-help = listplayers
+cmd-listplayers-help = Usage: {$command}
 
 cmd-kick-desc = Kicks a connected player out of the server, disconnecting them.
-cmd-kick-help = kick <PlayerIndex> [<Reason>]
+cmd-kick-help = Usage: {$command} <PlayerIndex> [<Reason>]
 
 # Spin command
 cmd-spin-desc = Causes an entity to spin. Default entity is the attached player's parent.
-cmd-spin-help = spin velocity [drag] [entityUid]
+cmd-spin-help = Usage: {$command} velocity [drag] [entityUid]
 
 # Localization command
 cmd-rldloc-desc = Reloads localization (client & server).
-cmd-rldloc-help = Usage: rldloc
+cmd-rldloc-help = Usage: {$command}
 
 # Debug entity controls
 cmd-spawn-desc = Spawns an entity with specific type.
-cmd-spawn-help = spawn <prototype> OR spawn <prototype> <relative entity ID> OR spawn <prototype> <x> <y>
+cmd-spawn-help = Usage: {$command} <prototype> | {$command} <prototype> <relative entity ID> | {$command} <prototype> <x> <y>
 cmd-cspawn-desc = Spawns a client-side entity with specific type at your feet.
-cmd-cspawn-help = cspawn <entity type>
-
-cmd-scale-desc = Increases or decreases an entity's size naively.
-cmd-scale-help = scale <entityUid> <float>
+cmd-cspawn-help = Usage: {$command} <entity type>
 
 cmd-dumpentities-desc = Dump entity list.
-cmd-dumpentities-help = Dumps entity list of UIDs and prototype.
+cmd-dumpentities-help = Usage: {$command}
+                        Dumps entity list of UIDs and prototype.
 
 cmd-getcomponentregistration-desc = Gets component registration information.
-cmd-getcomponentregistration-help = Usage: getcomponentregistration <componentName>
+cmd-getcomponentregistration-help = Usage: {$command} <componentName>
 
 cmd-showrays-desc = Toggles debug drawing of physics rays. An integer for <raylifetime> must be provided.
-cmd-showrays-help = Usage: showrays <raylifetime>
+cmd-showrays-help = Usage: {$command} <raylifetime>
 
 cmd-disconnect-desc = Immediately disconnect from the server and go back to the main menu.
-cmd-disconnect-help = Usage: disconnect
+cmd-disconnect-help = Usage: {$command}
 
 cmd-entfo-desc = Displays verbose diagnostics for an entity.
-cmd-entfo-help = Usage: entfo <entityuid>
+cmd-entfo-help = Usage: {$command} <entityuid>
     The entity UID can be prefixed with 'c' to convert it to a client entity UID.
 
-cmd-fuck-desc = Throws an exception
-cmd-fuck-help = Usage: fuck
+cmd-fuck-desc = Throws an exception.
+cmd-fuck-help = Usage: {$command}
 
 cmd-showpos-desc = Show the position of all entities on the screen.
-cmd-showpos-help = Usage: showpos
+cmd-showpos-help = Usage: {$command}
 
 cmd-showrot-desc = Show the rotation of all entities on the screen.
-cmd-showrot-help = Usage: showrot
+cmd-showrot-help = Usage: {$command}
 
 cmd-showvel-desc = Show the local velocity of all entites on the screen.
-cmd-showvel-help = Usage: showvel
+cmd-showvel-help = Usage: {$command}
 
 cmd-showangvel-desc = Show the angular velocity of all entities on the screen.
-cmd-showangvel-help = Usage: showangvel
+cmd-showangvel-help = Usage: {$command}
 
 cmd-sggcell-desc = Lists entities on a snap grid cell.
-cmd-sggcell-help = Usage: sggcell <gridID> <vector2i>\nThat vector2i param is in the form x<int>,y<int>.
+cmd-sggcell-help = Usage: {$command} <gridID> <vector2i>\nThat vector2i param is in the form x<int>,y<int>.
 
 cmd-overrideplayername-desc = Changes the name used when attempting to connect to the server.
-cmd-overrideplayername-help = Usage: overrideplayername <name>
+cmd-overrideplayername-help = Usage: {$command} <name>
 
-cmd-showanchored-desc = Shows anchored entities on a particular tile
-cmd-showanchored-help = Usage: showanchored
+cmd-showanchored-desc = Shows anchored entities on a particular tile.
+cmd-showanchored-help = Usage: {$command}
 
 cmd-dmetamem-desc = Dumps a type's members in a format suitable for the sandbox configuration file.
-cmd-dmetamem-help = Usage: dmetamem <type>
+cmd-dmetamem-help = Usage: {$command} <type>
 
 cmd-launchauth-desc = Load authentication tokens from launcher data to aid in testing of live servers.
-cmd-launchauth-help = Usage: launchauth <account name>
+cmd-launchauth-help = Usage: {$command} <account name>
 
 cmd-lightbb-desc = Toggles whether to show light bounding boxes.
-cmd-lightbb-help = Usage: lightbb
+cmd-lightbb-help = Usage: {$command}
 
-cmd-monitorinfo-desc = Monitors info
-cmd-monitorinfo-help = Usage: monitorinfo <id>
+cmd-monitorinfo-desc = Monitors info.
+cmd-monitorinfo-help = Usage: {$command} <id>
 
-cmd-setmonitor-desc = Set monitor
-cmd-setmonitor-help = Usage: setmonitor <id>
+cmd-setmonitor-desc = Set monitor.
+cmd-setmonitor-help = Usage: {$command} <id>
 
 cmd-physics-desc = Shows a debug physics overlay. The arg supplied specifies the overlay.
-cmd-physics-help = Usage: physics <aabbs / com / contactnormals / contactpoints / distance / joints / shapeinfo / shapes>
+cmd-physics-help = Usage: {$command} <aabbs / com / contactnormals / contactpoints / distance / joints / shapeinfo / shapes>
 
 cmd-hardquit-desc = Kills the game client instantly.
-cmd-hardquit-help = Kills the game client instantly, leaving no traces. No telling the server goodbye.
+cmd-hardquit-help = Usage: {$command}
+                    Kills the game client instantly, leaving no traces. No telling the server goodbye.
 
 cmd-quit-desc = Shuts down the game client gracefully.
-cmd-quit-help = Properly shuts down the game client, notifying the connected server and such.
+cmd-quit-help = Usage: {$command}
+                Properly shuts down the game client, notifying the connected server and such.
 
 cmd-csi-desc = Opens a C# interactive console.
-cmd-csi-help = Usage: csi
+cmd-csi-help = Usage: {$command}
 
 cmd-scsi-desc = Opens a C# interactive console on the server.
-cmd-scsi-help = Usage: scsi
+cmd-scsi-help = Usage: {$command}
 
 cmd-watch-desc = Opens a variable watch window.
-cmd-watch-help = Usage: watch
+cmd-watch-help = Usage: {$command}
 
-cmd-showspritebb-desc = Toggle whether sprite bounds are shown
-cmd-showspritebb-help = Usage: showspritebb
+cmd-showspritebb-desc = Toggle whether sprite bounds are shown.
+cmd-showspritebb-help = Usage: {$command}
 
 cmd-togglelookup-desc = Shows / hides entitylookup bounds via an overlay.
-cmd-togglelookup-help = Usage: togglelookup
+cmd-togglelookup-help = Usage: {$command}
 
 cmd-net_entityreport-desc = Toggles the net entity report panel.
-cmd-net_entityreport-help = Usage: net_entityreport
+cmd-net_entityreport-help = Usage: {$command}
 
 cmd-net_refresh-desc = Requests a full server state.
-cmd-net_refresh-help = Usage: net_refresh
+cmd-net_refresh-help = Usage: {$command}
 
 cmd-net_graph-desc = Toggles the net statistics panel.
-cmd-net_graph-help = Usage: net_graph
+cmd-net_graph-help = Usage: {$command}
 
 cmd-net_watchent-desc = Dumps all network updates for an EntityId to the console.
-cmd-net_watchent-help = Usage: net_watchent <0|EntityUid>
+cmd-net_watchent-help = Usage: {$command} <0|EntityUid>
 
 cmd-net_draw_interp-desc = Toggles the debug drawing of the network interpolation.
-cmd-net_draw_interp-help = Usage: net_draw_interp <0|EntityUid>
+cmd-net_draw_interp-help = Usage: {$command} <0|EntityUid>
 
 cmd-vram-desc = Displays video memory usage statics by the game.
-cmd-vram-help = Usage: vram
+cmd-vram-help = Usage: {$command}
 
 cmd-showislands-desc = Shows the current physics bodies involved in each physics island.
-cmd-showislands-help = Usage: showislands
+cmd-showislands-help = Usage: {$command}
 
 cmd-showgridnodes-desc = Shows the nodes for grid split purposes.
-cmd-showgridnodes-help = Usage: showgridnodes
+cmd-showgridnodes-help = Usage: {$command}
 
 cmd-profsnap-desc = Make a profiling snapshot.
-cmd-profsnap-help = Usage: profsnap
+cmd-profsnap-help = Usage: {$command}
 
-cmd-devwindow-desc = Dev Window
-cmd-devwindow-help = Usage: devwindow
+cmd-devwindow-desc = Dev Window.
+cmd-devwindow-help = Usage: {$command}
 
 cmd-scene-desc = Immediately changes the UI scene/state.
-cmd-scene-help = Usage: scene <className>
+cmd-scene-help = Usage: {$command} <className>
 
 cmd-szr_stats-desc = Report serializer statistics.
-cmd-szr_stats-help = Usage: szr_stats
+cmd-szr_stats-help = Usage: {$command}
 
 cmd-hwid-desc = Returns the current HWID (HardWare ID).
-cmd-hwid-help = Usage: hwid
+cmd-hwid-help = Usage: {$command}
 
 cmd-vvread-desc = Retrieve a path's value using VV (View Variables).
-cmd-vvread-help = Usage: vvread <path>
+cmd-vvread-help = Usage: {$command} <path>
 
 cmd-vvwrite-desc = Modify a path's value using VV (View Variables).
-cmd-vvwrite-help = Usage: vvwrite <path>
+cmd-vvwrite-help = Usage: {$command} <path>
 
 cmd-vvinvoke-desc = Invoke/Call a path with arguments using VV.
-cmd-vvinvoke-help = Usage: vvinvoke <path> [arguments...]
+cmd-vvinvoke-help = Usage: {$command} <path> [arguments...]
 
 cmd-dump_dependency_injectors-desc = Dump IoCManager's dependency injector cache.
-cmd-dump_dependency_injectors-help = Usage: dump_dependency_injectors
+cmd-dump_dependency_injectors-help = Usage: {$command}
 cmd-dump_dependency_injectors-total-count = Total count: { $total }
 
 cmd-dump_netserializer_type_map-desc = Dump NetSerializer's type map and serializer hash.
-cmd-dump_netserializer_type_map-help = Usage: dump_netserializer_type_map
+cmd-dump_netserializer_type_map-help = Usage: {$command}
 
-cmd-hub_advertise_now-desc = Immediately advertise to the master hub server
-cmd-hub_advertise_now-help = Usage: hub_advertise_now
+cmd-hub_advertise_now-desc = Immediately advertise to the master hub server.
+cmd-hub_advertise_now-help = Usage: {$command}
 
-cmd-echo-desc = Echo arguments back to the console
-cmd-echo-help = Usage: echo "<message>"
+cmd-echo-desc = Echo arguments back to the console.
+cmd-echo-help = Usage: {$command} "<message>"
 
 ## 'vfs_ls' command
 cmd-vfs_ls-desc = List directory contents in the VFS.
-cmd-vfs_ls-help = Usage: vfs_list <path>
+cmd-vfs_ls-help = Usage: {$command} <path>
     Example:
     vfs_list /Assemblies
 
 cmd-vfs_ls-err-args = Need exactly 1 argument.
 cmd-vfs_ls-hint-path = <path>
 
-cmd-reloadtiletextures-desc = Reloads the tile texture atlas to allow hot reloading tile sprites
-cmd-reloadtiletextures-help = Usage: reloadtiletextures
+cmd-reloadtiletextures-desc = Reloads the tile texture atlas to allow hot reloading tile sprites.
+cmd-reloadtiletextures-help = Usage: {$command}
 
 cmd-audio_length-desc = Shows the length of an audio file
-cmd-audio_length-help = Usage: audio_length { cmd-audio_length-arg-file-name }
+cmd-audio_length-help = Usage: {$command} { cmd-audio_length-arg-file-name }
 cmd-audio_length-arg-file-name = <file name>
 
 ## PVS
@@ -576,7 +580,9 @@ cmd-pvs-override-info-empty = Entity {$nuid} has no PVS overrides.
 cmd-pvs-override-info-global = Entity {$nuid} has a global override.
 cmd-pvs-override-info-clients = Entity {$nuid} has a session override for {$clients}.
 
-cmd-localization_set_culture-desc = Set DefaultCulture for the client LocalizationManager
-cmd-localization_set_culture-help = Usage: localization_set_culture <cultureName>
+cmd-localization_set_culture-desc = Set DefaultCulture for the client LocalizationManager.
+cmd-localization_set_culture-help = Usage: {$command} <cultureName>
 cmd-localization_set_culture-culture-name = <cultureName>
 cmd-localization_set_culture-changed = Localization changed to { $code } ({ $nativeName } / { $englishName })
+
+cmd-addmap-hint-2 = runMapInit [true / false]

Resources/Locale/en-US/custom-controls.ftl

@@ -1,8 +1,6 @@
 ## EntitySpawnWindow
 
 entity-spawn-window-title = Entity Spawn Panel
-entity-spawn-window-search-bar-placeholder = search
-entity-spawn-window-clear-button = Clear
 entity-spawn-window-replace-button-text = Replace
 entity-spawn-window-override-menu-tooltip = Override placement
 
@@ -22,3 +20,5 @@ output-panel-scroll-down-button-text = Scroll Down
 ## Common Used
 
 window-erase-button-text = Erase Mode
+window-search-bar-placeholder = Search
+window-clear-button = Clear

Resources/Locale/en-US/dev-window.ftl

@@ -8,3 +8,18 @@ dev-window-tab-textures-info = Width: { $width } Height: { $height }
     PixelType: { $pixelType } sRGB: { $srgb }
     Name: { $name }
     Est. memory usage: { $bytes }
+
+## "Render Targets" dev window tab
+dev-window-tab-render-targets-title = Render Targets
+dev-window-tab-render-targets-reload = Reload
+dev-window-tab-render-targets-filter = Filter
+dev-window-tab-render-targets-column-id = ID
+dev-window-tab-render-targets-column-name = Name
+dev-window-tab-render-targets-column-size = Size
+dev-window-tab-render-targets-column-type = Type
+dev-window-tab-render-targets-column-vram = VRAM
+dev-window-tab-render-targets-column-thumbnail = Thumbnail
+
+dev-window-tab-render-targets-value-null = null
+dev-window-tab-render-targets-value-not-available = Not available
+dev-window-tab-render-targets-summary = Total VRAM: { $vram }

Resources/Locale/en-US/input.ftl

@@ -2,6 +2,7 @@ input-key-Escape = Escape
 input-key-Control = Control
 input-key-Shift = Shift
 input-key-Alt = Alt
+input-key-Alt-mac = ⌥
 input-key-Menu = Menu
 input-key-F1 = F1
 input-key-F2 = F2
@@ -70,8 +71,8 @@ input-key-MouseButton9 = Mouse 9
 
 input-key-LSystem-win = Left Win
 input-key-RSystem-win = Right Win
-input-key-LSystem-mac = Left Cmd
-input-key-RSystem-mac = Right Cmd
+input-key-LSystem-mac = Left ⌘
+input-key-RSystem-mac = Right ⌘
 input-key-LSystem-linux = Left Meta
 input-key-RSystem-linux = Right Meta
 

Resources/Locale/en-US/toolshed-commands.ftl

@@ -428,3 +428,7 @@ command-description-cmd-info =
     On its own, this means it'll print the command's help message.
 command-description-comp-rm =
     Removes the given component from the entity.
+
+command-description-overlay-toggle = Toggle an overlay on or off
+command-description-overlay-add = Add an overlay (if it does not already exist)
+command-description-overlay-remove = Remove an overlay

Resources/Locale/en-US/view-variables.ftl

@@ -25,3 +25,9 @@ vv-sound-reference-distance = Reference Distance
 vv-sound-loop = Loop
 vv-sound-play-offset = Play Offset (s)
 vv-sound-variation = Pitch variation
+
+
+## ProtoId
+vv-protoid-id-placeholder = Prototype ID
+vv-protoid-select-button-label = Select
+vv-protoid-addwindow-title = Set Prototype

Resources/Shaders/Internal/light_shared.swsl

@@ -14,6 +14,8 @@ uniform highp vec2 lightCenter;
 uniform highp float lightRange;
 uniform highp float lightPower;
 uniform highp float lightSoftness;
+uniform highp float lightFalloff;
+uniform highp float lightCurveFactor;
 uniform highp float lightIndex;
 uniform sampler2D shadowMap;
 
@@ -47,8 +49,15 @@ void fragment()
         discard;
     }
 
-    highp float dist = dot(diff, diff) + LIGHTING_HEIGHT;
-    highp float val = clamp((1.0 - clamp(sqrt(dist) / lightRange, 0.0, 1.0)) * (1.0 / (sqrt(dist + 1.0))), 0.0, 1.0);
+    // this implementation of light attenuation primarily adapted from
+    // https://lisyarus.github.io/blog/posts/point-light-attenuation.html
+    highp float sqr_dist = dot(diff, diff) + LIGHTING_HEIGHT;
+
+    highp float s = clamp(sqrt(sqr_dist) / lightRange, 0.0, 1.0);
+    highp float s2 = s * s;
+    // controls curve by lerping between two variants (inverse-shape and inversequadratic-shape)
+    highp float curveFactor = mix(s, s2, clamp(lightCurveFactor, 0.0, 1.0));
+    highp float val = clamp(((1.0 - s2) * (1.0 - s2)) / (1.0 + lightFalloff * curveFactor), 0.0, 1.0);
 
     val *= lightPower;
     val *= mask;

Robust.Analyzers.Tests/AfterAutoHandleStateAnalyzerTest.cs

@@ -0,0 +1,110 @@
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.CSharp.Testing;
+using Microsoft.CodeAnalysis.Testing;
+using NUnit.Framework;
+using VerifyCS =
+    Microsoft.CodeAnalysis.CSharp.Testing.CSharpAnalyzerVerifier<Robust.Analyzers.AfterAutoHandleStateAnalyzer,
+        Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
+
+namespace Robust.Analyzers.Tests;
+
+[Parallelizable(ParallelScope.All | ParallelScope.Fixtures)]
+[TestFixture, TestOf(typeof(AfterAutoHandleStateAnalyzer))]
+public sealed class AfterAutoHandleStateAnalyzerTest
+{
+    private const string SubscribeEventDef = """
+        using System;
+        namespace Robust.Shared.GameObjects;
+
+        public readonly struct EntityUid;
+
+        public abstract class EntitySystem
+        {
+            public void SubscribeLocalEvent<T, TEvent>() where TEvent : notnull { }
+        }
+
+        public interface IComponent;
+        public interface IComponentState;
+        """;
+
+    // A rare case for block-scoped namespace, I thought. Then I realized this
+    // only needed the one type definition.
+    private const string OtherTypeDefs = """
+        using System;
+
+        namespace JetBrains.Annotations
+        {
+            public sealed class BaseTypeRequiredAttribute(Type baseType) : Attribute;
+        }
+        """;
+
+    private static Task Verifier(string code, params DiagnosticResult[] expected)
+    {
+        var test = new CSharpAnalyzerTest<AfterAutoHandleStateAnalyzer, DefaultVerifier>
+        {
+            TestState = { Sources = { code } }
+        };
+
+        TestHelper.AddEmbeddedSources(test.TestState,
+            "Robust.Shared.Analyzers.ComponentNetworkGeneratorAuxiliary.cs",
+            "Robust.Shared.GameObjects.EventBusAttributes.cs");
+
+        test.TestState.Sources.Add(("EntitySystem.Subscriptions.cs", SubscribeEventDef));
+        test.TestState.Sources.Add(("Types.cs", OtherTypeDefs));
+
+        test.TestState.ExpectedDiagnostics.AddRange(expected);
+
+        return test.RunAsync();
+    }
+
+    [Test]
+    public async Task Test()
+    {
+        const string code = """
+            using Robust.Shared.Analyzers;
+            using Robust.Shared.GameObjects;
+
+            [AutoGenerateComponentState(true)]
+            public sealed class AutoGenTrue;
+            [AutoGenerateComponentState(true, true)]
+            public sealed class AutoGenTrueTrue;
+
+            public sealed class NotAutoGen;
+            [AutoGenerateComponentState]
+            public sealed class AutoGenNoArgs;
+            [AutoGenerateComponentState(false)]
+            public sealed class AutoGenFalse;
+
+            public sealed class Foo : EntitySystem
+            {
+                public void Good()
+                {
+                    // Subscribing to other events works
+                    SubscribeLocalEvent<AutoGenNoArgs, object>();
+                    // First arg true allows subscribing
+                    SubscribeLocalEvent<AutoGenTrue, AfterAutoHandleStateEvent>();
+                    SubscribeLocalEvent<AutoGenTrueTrue, AfterAutoHandleStateEvent>();
+                }
+
+                public void Bad()
+                {
+                    // Can't subscribe if AutoGenerateComponentState isn't even present
+                    SubscribeLocalEvent<NotAutoGen, AfterAutoHandleStateEvent>();
+
+                    // Can't subscribe if first arg is not specified/false
+                    SubscribeLocalEvent<AutoGenNoArgs, AfterAutoHandleStateEvent>();
+                    SubscribeLocalEvent<AutoGenFalse, AfterAutoHandleStateEvent>();
+                }
+            }
+            """;
+
+        await Verifier(code,
+            // /0/Test0.cs(29,9): error RA0040: Tried to subscribe to AfterAutoHandleStateEvent for 'NotAutoGen' which doesn't have an AutoGenerateComponentState attribute
+            VerifyCS.Diagnostic(AfterAutoHandleStateAnalyzer.MissingAttribute).WithSpan(29, 9, 29, 69).WithArguments("NotAutoGen"),
+            // /0/Test0.cs(32,9): error RA0041: Tried to subscribe to AfterAutoHandleStateEvent for 'AutoGenNoArgs' which doesn't have raiseAfterAutoHandleState set
+            VerifyCS.Diagnostic(AfterAutoHandleStateAnalyzer.MissingAttributeParam).WithSpan(32, 9, 32, 72).WithArguments("AutoGenNoArgs"),
+            // /0/Test0.cs(33,9): error RA0041: Tried to subscribe to AfterAutoHandleStateEvent for 'AutoGenFalse' which doesn't have raiseAfterAutoHandleState set
+            VerifyCS.Diagnostic(AfterAutoHandleStateAnalyzer.MissingAttributeParam).WithSpan(33, 9, 33, 71).WithArguments("AutoGenFalse")
+        );
+    }
+}

Robust.Analyzers.Tests/ComponentPauseGeneratorTest.cs

@@ -1,4 +1,4 @@
-extern alias SerializationGenerator;
+extern alias SerializationGenerator;
 using System.Linq;
 using System.Reflection;
 using Microsoft.CodeAnalysis;
@@ -126,6 +126,48 @@ public sealed class ComponentPauseGeneratorTest
             """);
     }
 
+    [Test]
+    public void TestDictionary()
+    {
+        var result = RunGenerator("""
+            [AutoGenerateComponentPause]
+            public sealed partial class FooComponent : IComponent
+            {
+                [AutoPausedField]
+                public Dictionary<string, TimeSpan> Foo;
+            }
+            """);
+
+        ExpectNoDiagnostics(result);
+        ExpectSource(
+            result,
+            """
+            // <auto-generated />
+
+            using Robust.Shared.GameObjects;
+
+            public partial class FooComponent
+            {
+            [RobustAutoGenerated]
+            [global::System.ComponentModel.EditorBrowsable(global::System.ComponentModel.EditorBrowsableState.Never)]
+            public sealed class FooComponent_AutoPauseSystem : EntitySystem
+            {
+                public override void Initialize()
+                {
+                    SubscribeLocalEvent<FooComponent, EntityUnpausedEvent>(OnEntityUnpaused);
+                }
+
+                private void OnEntityUnpaused(EntityUid uid, FooComponent component, ref EntityUnpausedEvent args)
+                {
+                    foreach (var key in component.Foo.Keys)
+                        component.Foo[key] += args.PausedTime;
+                }
+            }
+            }
+
+            """);
+    }
+
     [Test]
     public void TestAutoState()
     {

Robust.Analyzers.Tests/DataDefinitionAnalyzerTest.cs

@@ -203,6 +203,8 @@ public sealed class DataDefinitionAnalyzerTest
 
             [NotYamlSerializable]
             public sealed class NotSerializableClass { }
+            [NotYamlSerializable]
+            public readonly struct NotSerializableStruct { }
 
             [DataDefinition]
             public sealed partial class Foo
@@ -213,6 +215,21 @@ public sealed class DataDefinitionAnalyzerTest
                 [DataField]
                 public NotSerializableClass BadProperty { get; set; }
 
+                [DataField]
+                public NotSerializableClass? BadNullableField;
+
+                [DataField]
+                public NotSerializableStruct BadStructField;
+
+                [DataField]
+                public NotSerializableStruct BadStructProperty { get; set; }
+
+                [DataField]
+                public NotSerializableStruct? BadNullableStructField;
+
+                [DataField]
+                public NotSerializableStruct? BadNullableStructProperty { get; set; }
+
                 public NotSerializableClass GoodField; // Not a DataField, not a problem
 
                 public NotSerializableClass GoodProperty { get; set; } // Not a DataField, not a problem
@@ -220,10 +237,20 @@ public sealed class DataDefinitionAnalyzerTest
             """;
 
         await Verifier(code,
-            // /0/Test0.cs(10,12): error RA0033: Data field BadField in data definition Foo is type NotSerializableClass, which is not YAML serializable
-            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(10, 12, 10, 32).WithArguments("BadField", "Foo", "NotSerializableClass"),
-            // /0/Test0.cs(13,12): error RA0033: Data field BadProperty in data definition Foo is type NotSerializableClass, which is not YAML serializable
-            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(13, 12, 13, 32).WithArguments("BadProperty", "Foo", "NotSerializableClass")
+            // /0/Test0.cs(12,12): error RA0033: Data field BadField in data definition Foo is type NotSerializableClass, which is not YAML serializable
+            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(12, 12, 12, 32).WithArguments("BadField", "Foo", "NotSerializableClass"),
+            // /0/Test0.cs(15,12): error RA0033: Data field BadProperty in data definition Foo is type NotSerializableClass, which is not YAML serializable
+            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(15, 12, 15, 32).WithArguments("BadProperty", "Foo", "NotSerializableClass"),
+            // /0/Test0.cs(18,12): error RA0036: Data field BadNullableField in data definition Foo is type NotSerializableClass, which is not YAML serializable
+            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(18, 12, 18, 33).WithArguments("BadNullableField", "Foo", "NotSerializableClass"),
+            // /0/Test0.cs(21,12): error RA0036: Data field BadStructField in data definition Foo is type NotSerializableStruct, which is not YAML serializable
+            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(21, 12, 21, 33).WithArguments("BadStructField", "Foo", "NotSerializableStruct"),
+            // /0/Test0.cs(24,12): error RA0036: Data field BadStructProperty in data definition Foo is type NotSerializableStruct, which is not YAML serializable
+            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(24, 12, 24, 33).WithArguments("BadStructProperty", "Foo", "NotSerializableStruct"),
+            // /0/Test0.cs(27,12): error RA0036: Data field BadNullableStructField in data definition Foo is type NotSerializableStruct, which is not YAML serializable
+            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(27, 12, 27, 34).WithArguments("BadNullableStructField", "Foo", "NotSerializableStruct"),
+            // /0/Test0.cs(30,12): error RA0036: Data field BadNullableStructProperty in data definition Foo is type NotSerializableStruct, which is not YAML serializable
+            VerifyCS.Diagnostic(DataDefinitionAnalyzer.DataFieldYamlSerializableRule).WithSpan(30, 12, 30, 34).WithArguments("BadNullableStructProperty", "Foo", "NotSerializableStruct")
         );
     }
 }

Robust.Analyzers.Tests/PrototypeInstantiationAnalyzerTest.cs

@@ -0,0 +1,64 @@
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.Testing;
+using NUnit.Framework;
+using VerifyCS =
+    Microsoft.CodeAnalysis.CSharp.Testing.CSharpAnalyzerVerifier<Robust.Analyzers.PrototypeInstantiationAnalyzer, Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
+
+namespace Robust.Analyzers.Tests;
+
+[Parallelizable(ParallelScope.All | ParallelScope.Fixtures)]
+[TestFixture]
+[TestOf(typeof(PrototypeInstantiationAnalyzer))]
+public sealed class PrototypeInstantiationAnalyzerTest
+{
+    private static Task Verifier(string code, params DiagnosticResult[] expected)
+    {
+        var test = new RTAnalyzerTest<PrototypeInstantiationAnalyzer>()
+        {
+            TestState =
+            {
+                Sources = { code }
+            },
+        };
+
+        TestHelper.AddEmbeddedSources(
+            test.TestState,
+            "Robust.Shared.Prototypes.Attributes.cs",
+            "Robust.Shared.Prototypes.IPrototype.cs",
+            "Robust.Shared.Serialization.Manager.Attributes.DataFieldAttribute.cs"
+        );
+
+        // ExpectedDiagnostics cannot be set, so we need to AddRange here...
+        test.TestState.ExpectedDiagnostics.AddRange(expected);
+
+        return test.RunAsync();
+    }
+
+    [Test]
+    public async Task Test()
+    {
+        const string code = """
+            using Robust.Shared.Serialization;
+            using Robust.Shared.Prototypes;
+
+            [Prototype]
+            public sealed class FooPrototype : IPrototype
+            {
+                [IdDataField]
+                public string ID { get; private set; } = default!;
+            }
+
+            public static class Bad
+            {
+                public static FooPrototype Real()
+                {
+                    return new FooPrototype();
+                }
+            }
+            """;
+
+        await Verifier(code,
+            // /0/Test0.cs(15,16): warning RA0039: Do not instantiate prototypes directly. Prototypes should always be instantiated by the prototype manager.
+            VerifyCS.Diagnostic().WithSpan(15, 16, 15, 34));
+    }
+}

Robust.Analyzers.Tests/PrototypeNetSerializableAnalyzerTest.cs

@@ -0,0 +1,61 @@
+using System.Threading.Tasks;
+using Microsoft.CodeAnalysis.Testing;
+using NUnit.Framework;
+using VerifyCS =
+    Microsoft.CodeAnalysis.CSharp.Testing.CSharpAnalyzerVerifier<Robust.Analyzers.PrototypeNetSerializableAnalyzer, Microsoft.CodeAnalysis.Testing.DefaultVerifier>;
+
+namespace Robust.Analyzers.Tests;
+
+[Parallelizable(ParallelScope.All | ParallelScope.Fixtures)]
+[TestFixture]
+[TestOf(typeof(PrototypeNetSerializableAnalyzer))]
+public sealed class PrototypeNetSerializableAnalyzerTest
+{
+    private static Task Verifier(string code, params DiagnosticResult[] expected)
+    {
+        var test = new RTAnalyzerTest<PrototypeNetSerializableAnalyzer>()
+        {
+            TestState =
+            {
+                Sources = { code }
+            },
+        };
+
+        TestHelper.AddEmbeddedSources(
+            test.TestState,
+            "Robust.Shared.Serialization.NetSerializableAttribute.cs",
+            "Robust.Shared.Prototypes.Attributes.cs",
+            "Robust.Shared.Prototypes.IPrototype.cs",
+            "Robust.Shared.Serialization.Manager.Attributes.DataFieldAttribute.cs"
+        );
+
+        // ExpectedDiagnostics cannot be set, so we need to AddRange here...
+        test.TestState.ExpectedDiagnostics.AddRange(expected);
+
+        return test.RunAsync();
+    }
+
+    [Test]
+    public async Task Test()
+    {
+        const string code = """
+            using System;
+            using Robust.Shared.Serialization;
+            using Robust.Shared.Prototypes;
+
+            [Prototype]
+            [Serializable, NetSerializable]
+            public sealed class FooPrototype : IPrototype
+            {
+                [IdDataField]
+                public string ID { get; private set; } = default!;
+            }
+            """;
+
+        await Verifier(code,
+            // /0/Test0.cs(7,21): warning RA0037: Type FooPrototype is a prototype and marked as [NetSerializable]. Prototypes should not be directly sent over the network, send their IDs instead.
+            VerifyCS.Diagnostic(PrototypeNetSerializableAnalyzer.RuleNetSerializable).WithSpan(7, 21, 7, 33).WithArguments("FooPrototype"),
+            // /0/Test0.cs(7,21): warning RA0038: Type FooPrototype is a prototype and marked as [Serializable]. Prototypes should not be directly sent over the network, send their IDs instead.
+            VerifyCS.Diagnostic(PrototypeNetSerializableAnalyzer.RuleSerializable).WithSpan(7, 21, 7, 33).WithArguments("FooPrototype"));
+    }
+}

Robust.Analyzers.Tests/RTAnalyzerTest.cs

@@ -0,0 +1,17 @@
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.CSharp;
+using Microsoft.CodeAnalysis.CSharp.Testing;
+using Microsoft.CodeAnalysis.Diagnostics;
+using Microsoft.CodeAnalysis.Testing;
+
+namespace Robust.Analyzers.Tests;
+
+public sealed class RTAnalyzerTest<TAnalyzer> : CSharpAnalyzerTest<TAnalyzer, DefaultVerifier>
+    where TAnalyzer : DiagnosticAnalyzer, new()
+{
+    protected override ParseOptions CreateParseOptions()
+    {
+        var baseOptions = (CSharpParseOptions) base.CreateParseOptions();
+        return baseOptions.WithPreprocessorSymbols("ROBUST_ANALYZERS_TEST");
+    }
+}

Robust.Analyzers.Tests/Robust.Analyzers.Tests.csproj

@@ -10,6 +10,7 @@
   <ItemGroup>
     <EmbeddedResource Include="..\Robust.Shared\Analyzers\AccessAttribute.cs" LogicalName="Robust.Shared.Analyzers.AccessAttribute.cs" LinkBase="Implementations" />
     <EmbeddedResource Include="..\Robust.Shared\Analyzers\AccessPermissions.cs" LogicalName="Robust.Shared.Analyzers.AccessPermissions.cs" LinkBase="Implementations" />
+    <EmbeddedResource Include="..\Robust.Shared\Analyzers\ComponentNetworkGeneratorAuxiliary.cs" LogicalName="Robust.Shared.Analyzers.ComponentNetworkGeneratorAuxiliary.cs" LinkBase="Implementations" />
     <EmbeddedResource Include="..\Robust.Shared\Analyzers\MustCallBaseAttribute.cs" LogicalName="Robust.Shared.IoC.MustCallBaseAttribute.cs" LinkBase="Implementations" />
     <EmbeddedResource Include="..\Robust.Shared\Analyzers\PreferNonGenericVariantForAttribute.cs" LogicalName="Robust.Shared.Analyzers.PreferNonGenericVariantForAttribute.cs" LinkBase="Implementations" />
     <EmbeddedResource Include="..\Robust.Shared\Analyzers\PreferOtherTypeAttribute.cs" LogicalName="Robust.Shared.Analyzers.PreferOtherTypeAttribute.cs" LinkBase="Implementations" />
@@ -17,6 +18,10 @@
     <EmbeddedResource Include="..\Robust.Shared\Analyzers\ObsoleteInheritanceAttribute.cs" LogicalName="Robust.Shared.Analyzers.ObsoleteInheritanceAttribute.cs" LinkBase="Implementations" />
     <EmbeddedResource Include="..\Robust.Shared\IoC\DependencyAttribute.cs" LogicalName="Robust.Shared.IoC.DependencyAttribute.cs" LinkBase="Implementations" />
     <EmbeddedResource Include="..\Robust.Shared\GameObjects\EventBusAttributes.cs" LogicalName="Robust.Shared.GameObjects.EventBusAttributes.cs" LinkBase="Implementations" />
+    <EmbeddedResource Include="..\Robust.Shared\Serialization\NetSerializableAttribute.cs" LogicalName="Robust.Shared.Serialization.NetSerializableAttribute.cs" LinkBase="Implementations" />
+    <EmbeddedResource Include="..\Robust.Shared\Prototypes\Attributes.cs" LogicalName="Robust.Shared.Prototypes.Attributes.cs" LinkBase="Implementations" />
+    <EmbeddedResource Include="..\Robust.Shared\Prototypes\IPrototype.cs" LogicalName="Robust.Shared.Prototypes.IPrototype.cs" LinkBase="Implementations" />
+    <EmbeddedResource Include="..\Robust.Shared\Serialization\Manager\Attributes\DataFieldAttribute.cs" LogicalName="Robust.Shared.Serialization.Manager.Attributes.DataFieldAttribute.cs" LinkBase="Implementations" />
   </ItemGroup>
 
   <PropertyGroup>

Robust.Analyzers/AfterAutoHandleStateAnalyzer.cs

@@ -0,0 +1,85 @@
+#nullable enable
+using System.Collections.Immutable;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Diagnostics;
+using Microsoft.CodeAnalysis.Operations;
+using Robust.Roslyn.Shared;
+
+namespace Robust.Analyzers;
+
+[DiagnosticAnalyzer(LanguageNames.CSharp)]
+public sealed class AfterAutoHandleStateAnalyzer : DiagnosticAnalyzer
+{
+    private const string AfterAutoHandleStateEventName = "AfterAutoHandleStateEvent";
+    private const string AutoGenStateAttribute = "Robust.Shared.Analyzers.AutoGenerateComponentStateAttribute";
+    private const string SubscribeLocalEventName = "SubscribeLocalEvent";
+
+    public static readonly DiagnosticDescriptor MissingAttribute = new(
+        Diagnostics.IdAutoGenStateAttributeMissing,
+        "Unreachable AfterAutoHandleState subscription",
+        "Tried to subscribe to AfterAutoHandleStateEvent for '{0}' which doesn't have an "
+        + "AutoGenerateComponentState attribute",
+        "Usage",
+        DiagnosticSeverity.Error,
+        true,
+        // Does this even show up anywhere in Rider? >:(
+        "You must mark your component with '[AutoGenerateComponentState(true)]' to subscribe to this event."
+    );
+
+    public static readonly DiagnosticDescriptor MissingAttributeParam = new(
+        Diagnostics.IdAutoGenStateParamMissing,
+        "Unreachable AfterAutoHandleState subscription",
+        "Tried to subscribe to AfterAutoHandleStateEvent for '{0}' which doesn't have "
+        + "raiseAfterAutoHandleState set",
+        "Usage",
+        DiagnosticSeverity.Error,
+        true,
+        "The AutoGenerateComponentState attribute must be passed 'true' in order to subscribe to this event."
+    );
+
+    public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics =>
+        [MissingAttribute, MissingAttributeParam];
+
+    public override void Initialize(AnalysisContext context)
+    {
+        // This is more to stop user error rather than code generation error
+        // (Plus this shouldn't affect code gen anyway)
+        context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.None);
+        context.EnableConcurrentExecution();
+
+        context.RegisterCompilationStartAction(compilationContext =>
+        {
+            var autoGenStateAttribute = compilationContext.Compilation.GetTypeByMetadataName(AutoGenStateAttribute);
+            // No attribute, no analyzer.
+            if (autoGenStateAttribute is null)
+                return;
+
+            compilationContext.RegisterOperationAction(
+                analysisContext => CheckEventSubscription(analysisContext, autoGenStateAttribute),
+                OperationKind.Invocation);
+        });
+    }
+
+    private static void CheckEventSubscription(OperationAnalysisContext context, ITypeSymbol autoGenStateAttribute)
+    {
+        if (context.Operation is not IInvocationOperation operation)
+            return;
+
+        // Check the method has the right name and has the right type args
+        if (operation.TargetMethod is not
+            { Name: SubscribeLocalEventName, TypeArguments: [var component, { Name: AfterAutoHandleStateEventName }] })
+            return;
+
+        // Search the component's attributes for something matching autoGenStateAttribute
+        AttributeHelper.HasAttribute(component, autoGenStateAttribute, out var autoGenAttribute);
+
+        // First argument is raiseAfterAutoHandleState—note it shouldn't ever
+        // be null, since it has a default, but eh.
+        if (autoGenAttribute?.ConstructorArguments[0].Value is true)
+            return;
+
+        context.ReportDiagnostic(Diagnostic.Create(autoGenAttribute is null ? MissingAttribute : MissingAttributeParam,
+            operation.Syntax.GetLocation(),
+            component.Name));
+    }
+}

Robust.Analyzers/DataDefinitionAnalyzer.cs

@@ -121,7 +121,7 @@ public sealed class DataDefinitionAnalyzer : DiagnosticAnalyzer
         }, SymbolKind.NamedType);
     }
 
-    private void AnalyzeDataDefinition(SyntaxNodeAnalysisContext context)
+    private static void AnalyzeDataDefinition(SyntaxNodeAnalysisContext context)
     {
         if (context.Node is not TypeDeclarationSyntax declaration)
             return;
@@ -147,7 +147,7 @@ public sealed class DataDefinitionAnalyzer : DiagnosticAnalyzer
         }
     }
 
-    private void AnalyzeDataField(SyntaxNodeAnalysisContext context)
+    private static void AnalyzeDataField(SyntaxNodeAnalysisContext context)
     {
         if (context.Node is not FieldDeclarationSyntax field)
             return;
@@ -186,6 +186,8 @@ public sealed class DataDefinitionAnalyzer : DiagnosticAnalyzer
             if (context.SemanticModel.GetSymbolInfo(field.Declaration.Type).Symbol is not ITypeSymbol fieldTypeSymbol)
                 continue;
 
+            fieldTypeSymbol = TypeSymbolHelper.GetNullableUnderlyingTypeOrSelf(fieldTypeSymbol);
+
             if (IsNotYamlSerializable(fieldSymbol, fieldTypeSymbol))
             {
                 context.ReportDiagnostic(Diagnostic.Create(DataFieldYamlSerializableRule,
@@ -198,7 +200,7 @@ public sealed class DataDefinitionAnalyzer : DiagnosticAnalyzer
         }
     }
 
-    private void AnalyzeDataFieldProperty(SyntaxNodeAnalysisContext context)
+    private static void AnalyzeDataFieldProperty(SyntaxNodeAnalysisContext context)
     {
         if (context.Node is not PropertyDeclarationSyntax property)
             return;
@@ -239,6 +241,8 @@ public sealed class DataDefinitionAnalyzer : DiagnosticAnalyzer
         if (context.SemanticModel.GetSymbolInfo(property.Type).Symbol is not ITypeSymbol propertyTypeSymbol)
             return;
 
+        propertyTypeSymbol = TypeSymbolHelper.GetNullableUnderlyingTypeOrSelf(propertyTypeSymbol);
+
         if (IsNotYamlSerializable(propertySymbol, propertyTypeSymbol))
         {
             context.ReportDiagnostic(Diagnostic.Create(DataFieldYamlSerializableRule,

Robust.Analyzers/PrototypeInstantiationAnalyzer.cs

@@ -0,0 +1,48 @@
+using System.Collections.Immutable;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Diagnostics;
+using Microsoft.CodeAnalysis.Operations;
+using Robust.Roslyn.Shared;
+
+namespace Robust.Analyzers;
+
+[DiagnosticAnalyzer(LanguageNames.CSharp)]
+public sealed class PrototypeInstantiationAnalyzer : DiagnosticAnalyzer
+{
+    private const string PrototypeInterfaceType = "Robust.Shared.Prototypes.IPrototype";
+
+    public static readonly DiagnosticDescriptor Rule = new(
+        Diagnostics.IdPrototypeInstantiation,
+        "Do not instantiate prototypes directly",
+        "Do not instantiate prototypes directly. Prototypes should always be instantiated by the prototype manager.",
+        "Usage",
+        DiagnosticSeverity.Warning,
+        true);
+
+    public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => [Rule];
+
+    public override void Initialize(AnalysisContext context)
+    {
+        context.EnableConcurrentExecution();
+        context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.None);
+        context.RegisterCompilationStartAction(static ctx =>
+        {
+            var prototypeInterface = ctx.Compilation.GetTypeByMetadataName(PrototypeInterfaceType);
+            if (prototypeInterface == null)
+                return;
+
+            ctx.RegisterOperationAction(symContext => Check(prototypeInterface, symContext), OperationKind.ObjectCreation);
+        });
+    }
+
+    private static void Check(INamedTypeSymbol prototypeInterface, OperationAnalysisContext ctx)
+    {
+        if (ctx.Operation is not IObjectCreationOperation { Type: { } resultType } creationOp)
+            return;
+
+        if (!TypeSymbolHelper.ImplementsInterface(resultType, prototypeInterface))
+            return;
+
+        ctx.ReportDiagnostic(Diagnostic.Create(Rule, creationOp.Syntax.GetLocation()));
+    }
+}

Robust.Analyzers/PrototypeNetSerializableAnalyzer.cs

@@ -0,0 +1,76 @@
+using System.Collections.Immutable;
+using Microsoft.CodeAnalysis;
+using Microsoft.CodeAnalysis.Diagnostics;
+using Robust.Roslyn.Shared;
+
+namespace Robust.Analyzers;
+
+[DiagnosticAnalyzer(LanguageNames.CSharp)]
+public sealed class PrototypeNetSerializableAnalyzer : DiagnosticAnalyzer
+{
+    private const string PrototypeInterfaceType = "Robust.Shared.Prototypes.IPrototype";
+    private const string NetSerializableAttributeType = "Robust.Shared.Serialization.NetSerializableAttribute";
+
+    public static readonly DiagnosticDescriptor RuleNetSerializable = new(
+        Diagnostics.IdPrototypeNetSerializable,
+        "Prototypes should not be [NetSerializable]",
+        "Type {0} is a prototype and marked as [NetSerializable]. Prototypes should not be directly sent over the network, send their IDs instead.",
+        "Usage",
+        DiagnosticSeverity.Warning,
+        true);
+
+
+    public static readonly DiagnosticDescriptor RuleSerializable = new(
+        Diagnostics.IdPrototypeSerializable,
+        "Prototypes should not be [Serializable]",
+        "Type {0} is a prototype and marked as [Serializable]. Prototypes should not be directly sent over the network, send their IDs instead.",
+        "Usage",
+        DiagnosticSeverity.Warning,
+        true);
+
+    public override ImmutableArray<DiagnosticDescriptor> SupportedDiagnostics => [
+        RuleNetSerializable,
+        RuleSerializable
+    ];
+
+    public override void Initialize(AnalysisContext context)
+    {
+        context.EnableConcurrentExecution();
+        context.ConfigureGeneratedCodeAnalysis(GeneratedCodeAnalysisFlags.None);
+
+        context.RegisterCompilationStartAction(static ctx =>
+        {
+            var prototypeInterface = ctx.Compilation.GetTypeByMetadataName(PrototypeInterfaceType);
+            var netSerializableAttribute = ctx.Compilation.GetTypeByMetadataName(NetSerializableAttributeType);
+
+            if (prototypeInterface == null || netSerializableAttribute == null)
+                return;
+
+            ctx.RegisterSymbolAction(symbolContext => CheckClass(prototypeInterface, netSerializableAttribute, symbolContext), SymbolKind.NamedType);
+        });
+    }
+
+    private static void CheckClass(
+        INamedTypeSymbol prototypeInterface,
+        INamedTypeSymbol netSerializableAttribute,
+        SymbolAnalysisContext symbolContext)
+    {
+        if (symbolContext.Symbol is not INamedTypeSymbol symbol)
+            return;
+
+        if (!TypeSymbolHelper.ImplementsInterface(symbol, prototypeInterface))
+            return;
+
+        if (AttributeHelper.HasAttribute(symbol, netSerializableAttribute, out _))
+        {
+            symbolContext.ReportDiagnostic(
+                Diagnostic.Create(RuleNetSerializable, symbol.Locations[0], symbol.ToDisplayString()));
+        }
+
+        if (symbol.IsSerializable)
+        {
+            symbolContext.ReportDiagnostic(
+                Diagnostic.Create(RuleSerializable, symbol.Locations[0], symbol.ToDisplayString()));
+        }
+    }
+}

Robust.Client.WebView/Cef/WebViewManagerCef.Control.cs

@@ -162,9 +162,10 @@ namespace Robust.Client.WebView.Cef
                 }
             }
 
+            public bool IsOpen => _data != null;
             public bool IsLoading => _data?.Browser.IsLoading ?? false;
 
-            public void EnteredTree()
+            public void StartBrowser()
             {
                 DebugTools.AssertNull(_data);
 
@@ -195,7 +196,7 @@ namespace Robust.Client.WebView.Cef
                 _data = new LiveData(texture, client, browser, renderer);
             }
 
-            public void ExitedTree()
+            public void CloseBrowser()
             {
                 DebugTools.AssertNotNull(_data);
 

Robust.Client.WebView/Cef/WebViewManagerCef.Lock.cs

@@ -0,0 +1,51 @@
+using System;
+using System.IO;
+using Robust.Client.Utility;
+
+namespace Robust.Client.WebView.Cef;
+
+internal sealed partial class WebViewManagerCef
+{
+    private const string BaseCacheName = "cef_cache";
+    private const string LockFileName = "robust.lock";
+    private FileStream? _lockFileStream;
+    private const int MaxAttempts = 15; // This probably shouldn't be a cvar because the only reason you'd need it change for legit just botting the game.
+
+    private string FindAndLockCacheDirectory()
+    {
+        var rootDir = Path.Combine(UserDataDir.GetRootUserDataDir(_gameController), BaseCacheName);
+
+        for (var i = 0; i < MaxAttempts; i++)
+        {
+            var cacheDirPath = Path.Combine(rootDir, i.ToString());
+
+            if (TryLockCacheDir(i, cacheDirPath))
+                return cacheDirPath;
+        }
+
+        throw new Exception("Unable to locate available CEF cache directory!");
+    }
+
+    private bool TryLockCacheDir(int attempt, string path)
+    {
+        _sawmill.Verbose($"Trying to lock cache directory {attempt}");
+
+        // Does not fail if directory already exists.
+        Directory.CreateDirectory(path);
+
+        var lockFilePath = Path.Combine(path, LockFileName);
+
+        try
+        {
+            var file = File.Open(lockFilePath, FileMode.Create, FileAccess.ReadWrite, FileShare.None);
+            _lockFileStream = file;
+            _sawmill.Debug($"Successfully locked CEF cache directory {attempt}");
+            return true;
+        }
+        catch (IOException ex)
+        {
+            _sawmill.Error($"Failed to lock cache directory {attempt}: {ex}");
+            return false;
+        }
+    }
+}

Robust.Client.WebView/Cef/WebViewManagerCef.cs

@@ -61,12 +61,9 @@ namespace Robust.Client.WebView.Cef
             if (cefResourcesPath == null)
                 throw new InvalidOperationException("Unable to locate cef_resources directory!");
 
-            var cachePath = "";
-            if (_resourceManager.UserData is WritableDirProvider userData)
-            {
-                var rootDir = UserDataDir.GetRootUserDataDir(_gameController);
-                cachePath = Path.Combine(rootDir, "cef_cache", "0");
-            }
+            var remoteDebugPort = _cfg.GetCVar(WCVars.WebRemoteDebugPort);
+
+            var cachePath = FindAndLockCacheDirectory();
 
             var settings = new CefSettings()
             {
@@ -76,7 +73,7 @@ namespace Robust.Client.WebView.Cef
                 BrowserSubprocessPath = subProcessPath,
                 LocalesDirPath = Path.Combine(cefResourcesPath, "locales"),
                 ResourcesDirPath = cefResourcesPath,
-                RemoteDebuggingPort = 9222,
+                RemoteDebuggingPort = remoteDebugPort,
                 CookieableSchemesList = "usr,res",
                 CachePath = cachePath,
             };

Robust.Client.WebView/Headless/WebViewManagerHeadless.cs

@@ -81,11 +81,13 @@ namespace Robust.Client.WebView.Headless
 
         private sealed class WebViewControlImplDummy : DummyBase, IWebViewControlImpl
         {
-            public void EnteredTree()
+            public bool IsOpen => false;
+
+            public void StartBrowser()
             {
             }
 
-            public void ExitedTree()
+            public void CloseBrowser()
             {
             }
 

Robust.Client.WebView/IWebViewControlImpl.cs

@@ -9,8 +9,10 @@ namespace Robust.Client.WebView
     /// </summary>
     internal interface IWebViewControlImpl : IWebViewControl
     {
-        void EnteredTree();
-        void ExitedTree();
+        public bool IsOpen { get; }
+
+        void StartBrowser();
+        void CloseBrowser();
         void MouseMove(GUIMouseMoveEventArgs args);
         void MouseExited();
         void MouseWheel(GUIMouseWheelEventArgs args);

Robust.Client.WebView/WCVars.cs

@@ -26,4 +26,16 @@ public static class WCVars
     /// </summary>
     public static readonly CVarDef<bool> WebHeadless =
         CVarDef.Create("web.headless", false, CVar.CLIENTONLY);
+
+#if TOOLS
+    private const int DefaultRemoteDebugPort = 9222;
+#else
+    private const int DefaultRemoteDebugPort = 0;
+#endif
+
+    /// <summary>
+    /// If not 0, the port number used for Chromium's remote debugging.
+    /// </summary>
+    public static readonly CVarDef<int> WebRemoteDebugPort =
+        CVarDef.Create("web.remote_debug_port", DefaultRemoteDebugPort, CVar.CLIENTONLY);
 }

Robust.Client.WebView/WebViewControl.cs

@@ -14,6 +14,7 @@ namespace Robust.Client.WebView
         [Dependency] private readonly IWebViewManagerInternal _webViewManager = default!;
 
         private readonly IWebViewControlImpl _controlImpl;
+        private bool _alwaysActive;
 
         [ViewVariables(VVAccess.ReadWrite)]
         public string Url
@@ -22,6 +23,21 @@ namespace Robust.Client.WebView
             set => _controlImpl.Url = value;
         }
 
+        [ViewVariables(VVAccess.ReadWrite)]
+        public bool AlwaysActive
+        {
+            get => _alwaysActive;
+            set
+            {
+                _alwaysActive = value;
+
+                if (_alwaysActive && !_controlImpl.IsOpen)
+                    _controlImpl.StartBrowser();
+                else if (!_alwaysActive && _controlImpl.IsOpen && !IsInsideTree)
+                    _controlImpl.CloseBrowser();
+            }
+        }
+
         [ViewVariables] public bool IsLoading => _controlImpl.IsLoading;
 
         public WebViewControl()
@@ -39,14 +55,16 @@ namespace Robust.Client.WebView
         {
             base.EnteredTree();
 
-            _controlImpl.EnteredTree();
+            if (!_controlImpl.IsOpen)
+                _controlImpl.StartBrowser();
         }
 
         protected override void ExitedTree()
         {
             base.ExitedTree();
 
-            _controlImpl.ExitedTree();
+            if (!_alwaysActive)
+                _controlImpl.CloseBrowser();
         }
 
         protected internal override void MouseMove(GUIMouseMoveEventArgs args)

Robust.Client/Animations/AnimationTrackProperty.cs

@@ -3,8 +3,6 @@ using System.Collections.Generic;
 using System.Numerics;
 using Robust.Shared.Animations;
 using Robust.Shared.Maths;
-using Vector3 = Robust.Shared.Maths.Vector3;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Animations
 {
@@ -56,8 +54,14 @@ namespace Robust.Client.Animations
             }
             else
             {
+                var next = KeyFrames[nextKeyFrame];
+
                 // Get us a scale 0 -> 1 here.
-                var t = playingTime / KeyFrames[nextKeyFrame].KeyTime;
+                var t = playingTime / next.KeyTime;
+
+                // Apply easing to time parameter, if one was specified
+                if (next.Easing != null)
+                    t = next.Easing(t);
 
                 switch (InterpolationMode)
                 {
@@ -122,9 +126,9 @@ namespace Robust.Client.Animations
                 case Vector2 vector2:
                     return Vector2Helpers.InterpolateCubic((Vector2) preA, vector2, (Vector2) b, (Vector2) postB, t);
                 case Vector3 vector3:
-                    return Vector3.InterpolateCubic((Vector3) preA, vector3, (Vector3) b, (Vector3) postB, t);
+                    return VectorHelpers.InterpolateCubic((Vector3) preA, vector3, (Vector3) b, (Vector3) postB, t);
                 case Vector4 vector4:
-                    return Vector4.InterpolateCubic((Vector4) preA, vector4, (Vector4) b, (Vector4) postB, t);
+                    return VectorHelpers.InterpolateCubic((Vector4) preA, vector4, (Vector4) b, (Vector4) postB, t);
                 case float f:
                     return MathHelper.InterpolateCubic((float) preA, f, (float) b, (float) postB, t);
                 case double d:
@@ -149,10 +153,20 @@ namespace Robust.Client.Animations
             /// </summary>
             public readonly float KeyTime;
 
-            public KeyFrame(object value, float keyTime)
+            /// <summary>
+            ///     An easing function to apply when interpolating to this keyframe's value.
+            ///     Modifies the time parameter (0..1) of the interpolation between the previous keyframe and this one.
+            /// </summary>
+            /// <remarks>
+            ///     See <see cref="Easings"/> for examples of easing functions, or provide your own.
+            /// </remarks>
+            public readonly Func<float, float>? Easing;
+
+            public KeyFrame(object value, float keyTime, Func<float, float>? easing = null)
             {
                 Value = value;
                 KeyTime = keyTime;
+                Easing = easing;
             }
         }
     }

Robust.Client/Audio/AudioManager.cs

@@ -3,7 +3,6 @@ using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using System.Threading;
 using OpenTK.Audio.OpenAL;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
 using Robust.Client.Audio.Sources;
 using Robust.Client.ResourceManagement;
 using Robust.Shared;
@@ -145,7 +144,7 @@ internal sealed partial class AudioManager : IAudioInternal
     private static void RemoveEfx((int sourceHandle, int filterHandle) handles)
     {
         if (handles.filterHandle != 0)
-            EFX.DeleteFilter(handles.filterHandle);
+            ALC.EFX.DeleteFilter(handles.filterHandle);
     }
 
     private void _checkAlcError(ALDevice device,

Robust.Client/Audio/AudioSystem.Effects.cs

@@ -1,4 +1,3 @@
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
 using Robust.Client.Audio.Effects;
 using Robust.Shared.Audio.Components;
 using Robust.Shared.GameObjects;

Robust.Client/Audio/AudioSystem.cs

@@ -372,13 +372,13 @@ public sealed partial class AudioSystem : SharedAudioSystem
             return;
         }
 
+        var parentUid = xform.ParentUid;
         Vector2 worldPos;
         component.Volume = component.Params.Volume;
 
         // Handle grid audio differently by using grid position.
         if ((component.Flags & AudioFlags.GridAudio) != 0x0)
         {
-            var parentUid = xform.ParentUid;
             worldPos = _maps.GetGridPosition(parentUid);
         }
         else
@@ -412,7 +412,7 @@ public sealed partial class AudioSystem : SharedAudioSystem
         }
         else
         {
-            var occlusion = GetOcclusion(listener, delta, distance, entity);
+            var occlusion = GetOcclusion(listener, delta, distance, parentUid);
             component.Occlusion = occlusion;
         }
 
@@ -420,11 +420,11 @@ public sealed partial class AudioSystem : SharedAudioSystem
         component.Position = worldPos;
 
         // Make race cars go NYYEEOOOOOMMMMM
-        if (_physicsQuery.TryGetComponent(entity, out var physicsComp))
+        if (_physicsQuery.TryGetComponent(parentUid, out var physicsComp))
         {
             // This actually gets the tracked entity's xform & iterates up though the parents for the second time. Bit
             // inefficient.
-            var velocity = _physics.GetMapLinearVelocity(entity, physicsComp, xform);
+            var velocity = _physics.GetMapLinearVelocity(parentUid, physicsComp);
             component.Velocity = velocity;
         }
     }
@@ -589,6 +589,11 @@ public sealed partial class AudioSystem : SharedAudioSystem
         var playing = CreateAndStartPlayingStream(audioParams, specifier, stream);
         _xformSys.SetCoordinates(playing.Entity, new EntityCoordinates(entity, Vector2.Zero));
 
+        // Since we're playing the sound immediately in the middle of a tick, we need to force ProcessStream -now-
+        // to set occlusion/position/velocity etc
+        // otherwise predicted positional sounds will sound very incorrect in several possible ways (e#5802, e#6175) until the next tick
+        ProcessStream(playing.Entity, playing.Component, Transform(playing.Entity), GetListenerCoordinates());
+
         return playing;
     }
 
@@ -632,6 +637,10 @@ public sealed partial class AudioSystem : SharedAudioSystem
 
         var playing = CreateAndStartPlayingStream(audioParams, specifier, stream);
         _xformSys.SetCoordinates(playing.Entity, coordinates);
+
+        // see PlayEntity for why this is necessary
+        ProcessStream(playing.Entity, playing.Component, Transform(playing.Entity), GetListenerCoordinates());
+
         return playing;
     }
 
@@ -714,8 +723,6 @@ public sealed partial class AudioSystem : SharedAudioSystem
         offset = Math.Clamp(offset, 0f, maxOffset);
         source.PlaybackPosition = offset;
 
-        // For server we will rely on the adjusted one but locally we will have to adjust it ourselves.
-        ApplyAudioParams(comp.Params, comp);
         source.StartPlaying();
         return (entity, comp);
     }

Robust.Client/Audio/Effects/AudioEffect.cs

@@ -1,5 +1,6 @@
 using System;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using System.Numerics;
+using OpenTK.Audio.OpenAL;
 using Robust.Shared.Audio;
 using Robust.Shared.Audio.Effects;
 using Robust.Shared.Maths;
@@ -15,16 +16,16 @@ internal sealed class AudioEffect : IAudioEffect
 
     public AudioEffect(IAudioInternal manager)
     {
-        Handle = EFX.GenEffect();
+        Handle = ALC.EFX.GenEffect();
         _master = manager;
-        EFX.Effect(Handle, EffectInteger.EffectType, (int) EffectType.EaxReverb);
+        ALC.EFX.Effect(Handle, EffectInteger.EffectType, (int) EffectType.EaxReverb);
     }
 
     public void Dispose()
     {
         if (Handle != 0)
         {
-            EFX.DeleteEffect(Handle);
+            ALC.EFX.DeleteEffect(Handle);
             Handle = 0;
         }
     }
@@ -43,14 +44,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbDensity, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbDensity, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbDensity, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbDensity, value);
             _master._checkAlError();
         }
     }
@@ -61,14 +62,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbDiffusion, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbDiffusion, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbDiffusion, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbDiffusion, value);
             _master._checkAlError();
         }
     }
@@ -79,14 +80,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbGain, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbGain, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbGain, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbGain, value);
             _master._checkAlError();
         }
     }
@@ -97,14 +98,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbGainHF, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbGainHF, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbGainHF, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbGainHF, value);
             _master._checkAlError();
         }
     }
@@ -115,14 +116,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbGainLF, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbGainLF, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbGainLF, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbGainLF, value);
             _master._checkAlError();
         }
     }
@@ -133,14 +134,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayTime, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayTime, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbDecayTime, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbDecayTime, value);
             _master._checkAlError();
         }
     }
@@ -151,14 +152,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayHFRatio, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayHFRatio, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbDecayHFRatio, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbDecayHFRatio, value);
             _master._checkAlError();
         }
     }
@@ -169,14 +170,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayLFRatio, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbDecayLFRatio, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbDecayLFRatio, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbDecayLFRatio, value);
             _master._checkAlError();
         }
     }
@@ -187,14 +188,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbReflectionsGain, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbReflectionsGain, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbReflectionsGain, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbReflectionsGain, value);
             _master._checkAlError();
         }
     }
@@ -205,14 +206,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbReflectionsDelay, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbReflectionsDelay, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbReflectionsDelay, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbReflectionsDelay, value);
             _master._checkAlError();
         }
     }
@@ -223,7 +224,7 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            var value = EFX.GetEffect(Handle, EffectVector3.EaxReverbReflectionsPan);
+            var value = ALC.EFX.GetEffect(Handle, EffectVector3.EaxReverbReflectionsPan);
             _master._checkAlError();
             return new Vector3(value.X, value.Z, value.Y);
         }
@@ -231,7 +232,7 @@ internal sealed class AudioEffect : IAudioEffect
         {
             _checkDisposed();
             var openVec = new OpenTK.Mathematics.Vector3(value.X, value.Y, value.Z);
-            EFX.Effect(Handle, EffectVector3.EaxReverbReflectionsPan, ref openVec);
+            ALC.EFX.Effect(Handle, EffectVector3.EaxReverbReflectionsPan, ref openVec);
             _master._checkAlError();
         }
     }
@@ -242,14 +243,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbLateReverbGain, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbLateReverbGain, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbLateReverbGain, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbLateReverbGain, value);
             _master._checkAlError();
         }
     }
@@ -260,14 +261,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbLateReverbDelay, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbLateReverbDelay, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbLateReverbDelay, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbLateReverbDelay, value);
             _master._checkAlError();
         }
     }
@@ -278,7 +279,7 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            var value = EFX.GetEffect(Handle, EffectVector3.EaxReverbLateReverbPan);
+            var value = ALC.EFX.GetEffect(Handle, EffectVector3.EaxReverbLateReverbPan);
             _master._checkAlError();
             return new Vector3(value.X, value.Z, value.Y);
         }
@@ -286,7 +287,7 @@ internal sealed class AudioEffect : IAudioEffect
         {
             _checkDisposed();
             var openVec = new OpenTK.Mathematics.Vector3(value.X, value.Y, value.Z);
-            EFX.Effect(Handle, EffectVector3.EaxReverbLateReverbPan, ref openVec);
+            ALC.EFX.Effect(Handle, EffectVector3.EaxReverbLateReverbPan, ref openVec);
             _master._checkAlError();
         }
     }
@@ -297,14 +298,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbEchoTime, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbEchoTime, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbEchoTime, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbEchoTime, value);
             _master._checkAlError();
         }
     }
@@ -315,14 +316,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbEchoDepth, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbEchoDepth, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbEchoDepth, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbEchoDepth, value);
             _master._checkAlError();
         }
     }
@@ -333,14 +334,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbModulationTime, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbModulationTime, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbModulationTime, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbModulationTime, value);
             _master._checkAlError();
         }
     }
@@ -351,14 +352,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbModulationDepth, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbModulationDepth, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbModulationDepth, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbModulationDepth, value);
             _master._checkAlError();
         }
     }
@@ -369,14 +370,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbAirAbsorptionGainHF, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbAirAbsorptionGainHF, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbAirAbsorptionGainHF, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbAirAbsorptionGainHF, value);
             _master._checkAlError();
         }
     }
@@ -387,14 +388,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbHFReference, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbHFReference, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbHFReference, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbHFReference, value);
             _master._checkAlError();
         }
     }
@@ -405,14 +406,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbLFReference, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbLFReference, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbLFReference, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbLFReference, value);
             _master._checkAlError();
         }
     }
@@ -423,14 +424,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectFloat.EaxReverbRoomRolloffFactor, out var value);
+            ALC.EFX.GetEffect(Handle, EffectFloat.EaxReverbRoomRolloffFactor, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectFloat.EaxReverbRoomRolloffFactor, value);
+            ALC.EFX.Effect(Handle, EffectFloat.EaxReverbRoomRolloffFactor, value);
             _master._checkAlError();
         }
     }
@@ -441,14 +442,14 @@ internal sealed class AudioEffect : IAudioEffect
         get
         {
             _checkDisposed();
-            EFX.GetEffect(Handle, EffectInteger.EaxReverbDecayHFLimit, out var value);
+            ALC.EFX.GetEffect(Handle, EffectInteger.EaxReverbDecayHFLimit, out var value);
             _master._checkAlError();
             return value;
         }
         set
         {
             _checkDisposed();
-            EFX.Effect(Handle, EffectInteger.EaxReverbDecayHFLimit, value);
+            ALC.EFX.Effect(Handle, EffectInteger.EaxReverbDecayHFLimit, value);
             _master._checkAlError();
         }
     }

Robust.Client/Audio/Effects/AuxiliaryAudio.cs

@@ -1,4 +1,4 @@
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
+using OpenTK.Audio.OpenAL;
 using Robust.Shared.Audio.Effects;
 
 namespace Robust.Client.Audio.Effects;
@@ -6,13 +6,13 @@ namespace Robust.Client.Audio.Effects;
 /// <inheritdoc />
 internal sealed class AuxiliaryAudio : IAuxiliaryAudio
 {
-    internal int Handle = EFX.GenAuxiliaryEffectSlot();
+    internal int Handle = ALC.EFX.GenAuxiliaryEffectSlot();
 
     public void Dispose()
     {
         if (Handle != -1)
         {
-            EFX.DeleteAuxiliaryEffectSlot(Handle);
+            ALC.EFX.DeleteAuxiliaryEffectSlot(Handle);
             Handle = -1;
         }
     }
@@ -22,11 +22,11 @@ internal sealed class AuxiliaryAudio : IAuxiliaryAudio
     {
         if (effect is AudioEffect audEffect)
         {
-            EFX.AuxiliaryEffectSlot(Handle, EffectSlotInteger.Effect, audEffect.Handle);
+            ALC.EFX.AuxiliaryEffectSlot(Handle, EffectSlotInteger.Effect, audEffect.Handle);
         }
         else
         {
-            EFX.AuxiliaryEffectSlot(Handle, EffectSlotInteger.Effect, 0);
+            ALC.EFX.AuxiliaryEffectSlot(Handle, EffectSlotInteger.Effect, 0);
         }
     }
 }

Robust.Client/Audio/Midi/IMidiRenderer.cs

@@ -213,4 +213,6 @@ public interface IMidiRenderer : IDisposable
     ///     Actually disposes of this renderer. Do NOT use outside the MIDI thread.
     /// </summary>
     internal void InternalDispose();
+
+    byte MinVolume { get; set; }
 }

Robust.Client/Audio/Midi/MidiManager.cs

@@ -42,7 +42,7 @@ internal sealed partial class MidiManager : IMidiManager
     [Dependency] private readonly IRuntimeLog _runtime = default!;
 
     private AudioSystem _audioSys = default!;
-    private SharedPhysicsSystem _broadPhaseSystem = default!;
+    private SharedPhysicsSystem _physics = default!;
     private SharedTransformSystem _xformSystem = default!;
 
     public IReadOnlyList<IMidiRenderer> Renderers
@@ -81,7 +81,7 @@ internal sealed partial class MidiManager : IMidiManager
     private Thread? _midiThread;
     private ISawmill _midiSawmill = default!;
     private float _gain = 0f;
-    private bool _volumeDirty = true;
+    private bool _gainDirty = true;
 
     // Not reliable until Fluidsynth is initialized!
     [ViewVariables(VVAccess.ReadWrite)]
@@ -96,7 +96,7 @@ internal sealed partial class MidiManager : IMidiManager
                 return;
 
             _cfgMan.SetCVar(CVars.MidiVolume, clamped);
-            _volumeDirty = true;
+            _gainDirty = true;
         }
     }
 
@@ -114,7 +114,8 @@ internal sealed partial class MidiManager : IMidiManager
         "/usr/share/sounds/sf2/TimGM6mb.sf2",
     };
 
-    private static readonly string WindowsSoundfont = $@"{Environment.GetEnvironmentVariable("SystemRoot")}\system32\drivers\gm.dls";
+    private static readonly string WindowsSoundfont =
+        $@"{Environment.GetEnvironmentVariable("SystemRoot")}\system32\drivers\gm.dls";
 
     private const string OsxSoundfont =
         "/System/Library/Components/CoreAudio.component/Contents/Resources/gs_instruments.dls";
@@ -145,11 +146,13 @@ internal sealed partial class MidiManager : IMidiManager
     {
         if (FluidsynthInitialized || _failedInitialize) return;
 
-        _cfgMan.OnValueChanged(CVars.MidiVolume, value =>
-        {
-            _gain = value;
-            _volumeDirty = true;
-        }, true);
+        _cfgMan.OnValueChanged(CVars.MidiVolume,
+            value =>
+            {
+                _gain = value;
+                _gainDirty = true;
+            },
+            true);
 
         _midiSawmill = _logger.GetSawmill("midi");
 #if DEBUG
@@ -167,13 +170,15 @@ internal sealed partial class MidiManager : IMidiManager
         // not a directory, preserve the old file and create an actual directory
         else if (!_resourceManager.UserData.IsDir(CustomSoundfontDirectory))
         {
-            _resourceManager.UserData.Rename(CustomSoundfontDirectory, CustomSoundfontDirectory.WithName(CustomSoundfontDirectory.Filename + ".old"));
+            _resourceManager.UserData.Rename(CustomSoundfontDirectory,
+                CustomSoundfontDirectory.WithName(CustomSoundfontDirectory.Filename + ".old"));
             _resourceManager.UserData.CreateDir(CustomSoundfontDirectory);
         }
 
         try
         {
-            NFluidsynth.Logger.SetLoggerMethod(_loggerDelegate); // Will cause a safe DllNotFoundException if not available.
+            NFluidsynth.Logger
+                .SetLoggerMethod(_loggerDelegate); // Will cause a safe DllNotFoundException if not available.
 
             _settings = new Settings();
             _settings["synth.sample-rate"].DoubleValue = 44100;
@@ -193,7 +198,7 @@ internal sealed partial class MidiManager : IMidiManager
             //_settings["synth.verbose"].IntValue = 1; // Useful for debugging.
 
             var midiParallel = _cfgMan.GetCVar(CVars.MidiParallelism);
-            _settings["synth.polyphony"].IntValue = Math.Clamp(1024 + (int)(Math.Log2(midiParallel) * 2048), 1, 65535);
+            _settings["synth.polyphony"].IntValue = Math.Clamp(1024 + (int) (Math.Log2(midiParallel) * 2048), 1, 65535);
             _settings["synth.cpu-cores"].IntValue = Math.Clamp(midiParallel, 1, 256);
 
             _midiSawmill.Debug($"Synth Cores: {_settings["synth.cpu-cores"].IntValue}");
@@ -219,7 +224,7 @@ internal sealed partial class MidiManager : IMidiManager
         };
 
         _audioSys = _entityManager.EntitySysManager.GetEntitySystem<AudioSystem>();
-        _broadPhaseSystem = _entityManager.EntitySysManager.GetEntitySystem<SharedPhysicsSystem>();
+        _physics = _entityManager.EntitySysManager.GetEntitySystem<SharedPhysicsSystem>();
         _xformSystem = _entityManager.System<SharedTransformSystem>();
         _entityManager.GetEntityQuery<PhysicsComponent>();
         _entityManager.GetEntityQuery<TransformComponent>();
@@ -263,7 +268,8 @@ internal sealed partial class MidiManager : IMidiManager
         {
             soundfontLoader.SetCallbacks(_soundfontLoaderCallbacks);
 
-            var renderer = new MidiRenderer(_settings!, soundfontLoader, mono, this, _audio, _taskManager, _midiSawmill);
+            var renderer =
+                new MidiRenderer(_settings!, soundfontLoader, mono, this, _audio, _taskManager, _midiSawmill);
 
             LoadSoundFontSetup(renderer);
 
@@ -273,6 +279,7 @@ internal sealed partial class MidiManager : IMidiManager
             {
                 _renderers.Add(renderer);
             }
+
             return renderer;
         }
         finally
@@ -309,99 +316,23 @@ internal sealed partial class MidiManager : IMidiManager
 
         _updateSemaphore.Release();
 
-        _volumeDirty = false;
+        _gainDirty = false;
     }
 
     private void UpdateRenderer(IMidiRenderer renderer, MapCoordinates listener)
     {
-        // TODO: This should be sharing more code with AudioSystem.
         try
         {
             if (renderer.Disposed)
                 return;
 
-            if (_volumeDirty)
-            {
-                renderer.Source.Gain = Gain;
-            }
-
             if (!renderer.Mono)
-            {
                 renderer.Source.Global = true;
-                return;
-            }
 
-            MapCoordinates mapPos;
-
-            if (renderer.TrackingEntity is {} trackedEntity && !_entityManager.Deleted(trackedEntity))
-            {
-                renderer.TrackingCoordinates = _xformSystem.GetMapCoordinates(renderer.TrackingEntity.Value);
-
-                // Pause it if the attached entity is paused.
-                if (_entityManager.IsPaused(renderer.TrackingEntity))
-                {
-                    renderer.Source.Pause();
-                    return;
-                }
-            }
-            else if (renderer.TrackingCoordinates == null)
-            {
-                renderer.Source.Pause();
-                return;
-            }
-
-            mapPos = renderer.TrackingCoordinates.Value;
-
-            // If it's on a different map then just mute it, not pause.
-            if (mapPos.MapId == MapId.Nullspace || mapPos.MapId != listener.MapId)
-            {
-                renderer.Source.Gain = 0f;
-                return;
-            }
-
-            // Was previously muted maybe so try unmuting it?
-            if (renderer.Source.Gain == 0f)
-            {
-                renderer.Source.Gain = Gain;
-            }
-
-            var worldPos = mapPos.Position;
-            var delta = worldPos - listener.Position;
-            var distance = delta.Length();
-
-            // Update position
-            // Out of range so just clip it for us.
-            if (distance > renderer.Source.MaxDistance)
-            {
-                // Still keeps the source playing, just with no volume.
-                renderer.Source.Gain = 0f;
-                return;
-            }
-
-            // Same imprecision suppression as audiosystem.
-            if (distance > 0f && distance < 0.01f)
-            {
-                worldPos = listener.Position;
-                delta = Vector2.Zero;
-                distance = 0f;
-            }
-
-            renderer.Source.Position = worldPos;
-
-            // Update velocity (doppler).
-            if (!_entityManager.Deleted(renderer.TrackingEntity))
-            {
-                var velocity = _broadPhaseSystem.GetMapLinearVelocity(renderer.TrackingEntity.Value);
-                renderer.Source.Velocity = velocity;
-            }
+            if (!renderer.Source.Global)
+                UpdateLocalRenderer(renderer, listener);
             else
-            {
-                renderer.Source.Velocity = Vector2.Zero;
-            }
-
-            // Update occlusion
-            var occlusion = _audioSys.GetOcclusion(listener, delta, distance, renderer.TrackingEntity);
-            renderer.Source.Occlusion = occlusion;
+                UpdateGlobalRenderer(renderer);
         }
         catch (Exception ex)
         {
@@ -409,6 +340,58 @@ internal sealed partial class MidiManager : IMidiManager
         }
     }
 
+    private void UpdateLocalRenderer(IMidiRenderer renderer, MapCoordinates listener)
+    {
+        if (_entityManager.Deleted(renderer.TrackingEntity) || _entityManager.IsPaused(renderer.TrackingEntity))
+        {
+            renderer.Source.Gain = 0f;
+
+            return;
+        }
+
+        MapCoordinates mapCoords = _xformSystem.GetMapCoordinates(renderer.TrackingEntity.Value);
+        renderer.TrackingCoordinates = mapCoords;
+
+        if (mapCoords.MapId == MapId.Nullspace || mapCoords.MapId != listener.MapId)
+        {
+            renderer.Source.Gain = 0f;
+
+            return;
+        }
+
+        Vector2 mapPosition = mapCoords.Position;
+        Vector2 listenerDelta = mapPosition - listener.Position;
+        var listenerDeltaLength = listenerDelta.Length();
+
+        if (listenerDeltaLength > renderer.Source.MaxDistance)
+        {
+            renderer.Source.Gain = 0f;
+
+            return;
+        }
+
+        if (listenerDeltaLength is > 0f and < 0.01f)
+        {
+            mapPosition = listener.Position;
+            listenerDelta = Vector2.Zero;
+            listenerDeltaLength = 0f;
+        }
+
+        if (_gainDirty || renderer.Source.Gain == 0f)
+            renderer.Source.Gain = Gain;
+
+        renderer.Source.Position = mapPosition;
+        renderer.Source.Velocity = _physics.GetMapLinearVelocity(renderer.TrackingEntity.Value);
+        renderer.Source.Occlusion =
+            _audioSys.GetOcclusion(listener, listenerDelta, listenerDeltaLength, renderer.TrackingEntity);
+    }
+
+    private void UpdateGlobalRenderer(IMidiRenderer renderer)
+    {
+        if (_gainDirty)
+            renderer.Source.Gain = Gain;
+    }
+
     /// <summary>
     ///     Main method for the thread rendering the midi audio.
     /// </summary>
@@ -428,7 +411,7 @@ internal sealed partial class MidiManager : IMidiManager
                     {
                         if (!renderer.Disposed)
                         {
-                            if (renderer.Master is { Disposed: true })
+                            if (renderer.Master is {Disposed: true})
                                 renderer.Master = null;
 
                             renderer.Render();

Robust.Client/Audio/Midi/MidiRenderer.cs

@@ -214,6 +214,11 @@ internal sealed partial class MidiRenderer : IMidiRenderer
     [ViewVariables]
     public BitArray FilteredChannels { get; } = new(RobustMidiEvent.MaxChannels);
 
+    [ViewVariables]
+    public byte MinVolume { get => _minVolume; set => _minVolume = value; }
+
+    private byte _minVolume;
+
     [ViewVariables(VVAccess.ReadWrite)]
     public byte? VelocityOverride { get; set; } = null;
 
@@ -539,14 +544,7 @@ internal sealed partial class MidiRenderer : IMidiRenderer
                     if (velocity <= 0)
                         continue;
 
-                    try
-                    {
-                        _synth.NoteOn(channel, key, velocity);
-                    }
-                    catch (FluidSynthInteropException e)
-                    {
-                        _midiSawmill.Error($"CH:{channel} KEY:{key} VEL:{velocity} {e.ToStringBetter()}");
-                    }
+                    _synth.TryNoteOn(channel, key, velocity);
                 }
             }
 
@@ -574,19 +572,32 @@ internal sealed partial class MidiRenderer : IMidiRenderer
                 {
                     case RobustMidiCommand.NoteOff:
                         _rendererState.NoteVelocities.AsSpan[midiEvent.Channel].AsSpan[midiEvent.Key] = 0;
-                        _synth.NoteOff(midiEvent.Channel, midiEvent.Key);
-                        break;
+                        _synth.TryNoteOff(midiEvent.Channel, midiEvent.Key);
 
+                        break;
                     case RobustMidiCommand.NoteOn:
+                        // Velocity 0 *can* represent a NoteOff event.
+                        var velocity = midiEvent.Velocity;
+                        if (velocity == 0)
+                        {
+                            _rendererState.NoteVelocities.AsSpan[midiEvent.Channel].AsSpan[midiEvent.Key] = 0;
+                            _synth.TryNoteOn(midiEvent.Channel, midiEvent.Key, velocity);
+
+                            break;
+                        }
+
                         if (FilteredChannels[midiEvent.Channel])
                             break;
 
-                        var velocity = VelocityOverride ?? midiEvent.Velocity;
+                        if (MinVolume > 0)
+                            velocity = (byte)Math.Floor(MathHelper.Lerp(MinVolume, 127, (float)velocity / 127));
+
+                        velocity = VelocityOverride ?? velocity;
 
                         _rendererState.NoteVelocities.AsSpan[midiEvent.Channel].AsSpan[midiEvent.Key] = velocity;
-                        _synth.NoteOn(midiEvent.Channel, midiEvent.Key, velocity);
-                        break;
+                        _synth.TryNoteOn(midiEvent.Channel, midiEvent.Key, velocity);
 
+                        break;
                     case RobustMidiCommand.AfterTouch:
                         _rendererState.NoteVelocities.AsSpan[midiEvent.Channel].AsSpan[midiEvent.Key] = midiEvent.Value;
                         _synth.KeyPressure(midiEvent.Channel, midiEvent.Key, midiEvent.Value);

Robust.Client/Audio/Sources/AudioSource.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Numerics;
 using OpenTK.Audio.OpenAL;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
 using Robust.Shared.Audio;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
@@ -77,7 +76,7 @@ internal sealed class AudioSource : BaseAudioSource
         else
         {
             if (FilterHandle != 0)
-                EFX.DeleteFilter(FilterHandle);
+                ALC.EFX.DeleteFilter(FilterHandle);
 
             AL.DeleteSource(SourceHandle);
             Master.RemoveAudioSource(SourceHandle);

Robust.Client/Audio/Sources/BaseAudioSource.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Numerics;
 using OpenTK.Audio.OpenAL;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
 using Robust.Client.Audio.Effects;
 using Robust.Shared.Audio.Effects;
 using Robust.Shared.Audio.Sources;
@@ -82,9 +81,9 @@ public abstract class BaseAudioSource : IAudioSource
         get
         {
             _checkDisposed();
-            var state = AL.GetSourceState(SourceHandle);
+            var state = AL.GetSource(SourceHandle, ALGetSourcei.SourceState);
             Master._checkAlError();
-            return state == ALSourceState.Playing;
+            return state == (int)ALSourceState.Playing;
         }
         set
         {
@@ -362,11 +361,11 @@ public abstract class BaseAudioSource : IAudioSource
 
         if (audio is AuxiliaryAudio impAudio)
         {
-            EFX.Source(SourceHandle, EFXSourceInteger3.AuxiliarySendFilter, impAudio.Handle, 0, 0);
+            ALC.EFX.Source(SourceHandle, EFXSourceInteger3.AuxiliarySendFilter, impAudio.Handle, 0, 0);
         }
         else
         {
-            EFX.Source(SourceHandle, EFXSourceInteger3.AuxiliarySendFilter, 0, 0, 0);
+            ALC.EFX.Source(SourceHandle, EFXSourceInteger3.AuxiliarySendFilter, 0, 0, 0);
         }
 
         Master._checkAlError();
@@ -376,12 +375,12 @@ public abstract class BaseAudioSource : IAudioSource
     {
         if (FilterHandle == 0)
         {
-            FilterHandle = EFX.GenFilter();
-            EFX.Filter(FilterHandle, FilterInteger.FilterType, (int) FilterType.Lowpass);
+            FilterHandle = ALC.EFX.GenFilter();
+            ALC.EFX.Filter(FilterHandle, FilterInteger.FilterType, (int) FilterType.Lowpass);
         }
 
-        EFX.Filter(FilterHandle, FilterFloat.LowpassGain, gain);
-        EFX.Filter(FilterHandle, FilterFloat.LowpassGainHF, cutoff);
+        ALC.EFX.Filter(FilterHandle, FilterFloat.LowpassGain, gain);
+        ALC.EFX.Filter(FilterHandle, FilterFloat.LowpassGainHF, cutoff);
         AL.Source(SourceHandle, ALSourcei.EfxDirectFilter, FilterHandle);
     }
 

Robust.Client/Audio/Sources/BufferedAudioSource.cs

@@ -1,7 +1,6 @@
 using System;
 using System.Collections.Generic;
 using OpenTK.Audio.OpenAL;
-using OpenTK.Audio.OpenAL.Extensions.Creative.EFX;
 using Robust.Shared.Audio.Sources;
 
 namespace Robust.Client.Audio.Sources;
@@ -37,9 +36,9 @@ internal sealed class BufferedAudioSource : BaseAudioSource, IBufferedAudioSourc
         get
         {
             _checkDisposed();
-            var state = AL.GetSourceState(SourceHandle);
+            var state = AL.GetSource(SourceHandle, ALGetSourcei.SourceState);
             _master._checkAlError();
-            return state == ALSourceState.Playing;
+            return state == (int)ALSourceState.Playing;
         }
         set
         {
@@ -84,7 +83,7 @@ internal sealed class BufferedAudioSource : BaseAudioSource, IBufferedAudioSourc
         else
         {
             if (FilterHandle != 0)
-                EFX.DeleteFilter(FilterHandle);
+                ALC.EFX.DeleteFilter(FilterHandle);
 
             AL.DeleteSource(SourceHandle);
             AL.DeleteBuffers(BufferHandles);

Robust.Client/ClientIoC.cs

@@ -144,6 +144,7 @@ namespace Robust.Client
             deps.Register<IViewVariablesManager, ClientViewVariablesManager>();
             deps.Register<IClientViewVariablesManager, ClientViewVariablesManager>();
             deps.Register<IClientViewVariablesManagerInternal, ClientViewVariablesManager>();
+            deps.Register<IViewVariableControlFactory, ViewVariableControlFactory>();
             deps.Register<IClientConGroupController, ClientConGroupController>();
             deps.Register<IScriptClient, ScriptClient>();
             deps.Register<IRobustSerializer, ClientRobustSerializer>();

Robust.Client/ComponentTrees/LightTreeSystem.cs

@@ -31,8 +31,7 @@ public sealed class LightTreeSystem : ComponentTreeSystem<LightTreeComponent, Po
 
         var pos = XformSystem.GetRelativePosition(
             entry.Transform,
-            entry.Component.TreeUid.Value,
-            GetEntityQuery<TransformComponent>());
+            entry.Component.TreeUid.Value);
 
         return ExtractAabb(in entry, pos, default);
     }

Robust.Client/Configuration/ClientNetConfigurationManager.cs

@@ -71,7 +71,7 @@ internal sealed class ClientNetConfigurationManager : NetConfigurationManager, I
         // Actually set the CVar
         base.SetCVar(name, value, force);
 
-        if ((flags & CVar.REPLICATED) == 0)
+        if ((flags & CVar.REPLICATED) == 0 || !NetManager.IsConnected)
             return;
 
         var msg = new MsgConVars();

Robust.Client/Console/Commands/DumpMetadataMembersCommand.cs

@@ -4,7 +4,7 @@ using Robust.Shared.ContentPack;
 
 namespace Robust.Client.Console.Commands
 {
-#if DEBUG
+#if TOOLS
     internal sealed class DumpMetadataMembersCommand : LocalizedCommands
     {
         public override string Command => "dmetamem";

Robust.Client/Console/Commands/UITestCommand.TabWrapContainer.cs

@@ -0,0 +1,124 @@
+using System;
+using Robust.Client.Graphics;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.Controls;
+using Robust.Shared.Maths;
+using ItemJustification = Robust.Client.UserInterface.Controls.WrapContainer.ItemJustification;
+
+namespace Robust.Client.Console.Commands;
+
+internal sealed partial class UITestControl
+{
+    private sealed class TabWrapContainer : Control
+    {
+        private readonly CheckBox _equalSizeBox;
+        private readonly CheckBox _reverseBox;
+        private readonly OptionButton _axisButton;
+        private readonly OptionButton _justifyButton;
+        private readonly LineEdit _separationEdit;
+        private readonly LineEdit _crossSeparationEdit;
+
+        public TabWrapContainer()
+        {
+            var container = new WrapContainer
+            {
+                MouseFilter = MouseFilterMode.Stop,
+                VerticalExpand = true,
+            };
+
+            var random = new Random(3005);
+
+            for (var i = 0; i < 35; i++)
+            {
+                var val = random.Next(1, 16);
+
+                var text = string.Create(val, 0, (span, _) => span.Fill('O'));
+                container.AddChild(new Button { Text = text });
+            }
+
+            AddChild(new BoxContainer
+            {
+                Orientation = BoxContainer.LayoutOrientation.Vertical,
+                Children =
+                {
+                    new BoxContainer
+                    {
+                        Orientation = BoxContainer.LayoutOrientation.Horizontal,
+                        SeparationOverride = 4,
+                        Children =
+                        {
+                            (_equalSizeBox = new CheckBox
+                            {
+                                Text = nameof(WrapContainer.EqualSize)
+                            }),
+                            (_reverseBox = new CheckBox
+                            {
+                                Text = nameof(WrapContainer.Reverse)
+                            }),
+                            (_axisButton = new OptionButton()),
+                            (_justifyButton = new OptionButton()),
+                            (_separationEdit = new LineEdit
+                            {
+                                PlaceHolder = "Separation",
+                                SetWidth = 100,
+                            }),
+                            (_crossSeparationEdit = new LineEdit
+                            {
+                                PlaceHolder = "Cross Separation",
+                                SetWidth = 100,
+                            })
+                        }
+                    },
+                    new PanelContainer
+                    {
+                        PanelOverride = new StyleBoxFlat { BackgroundColor = Color.Black },
+                        Children =
+                        {
+                            container
+                        }
+                    }
+                },
+            });
+
+            _axisButton.AddItem(nameof(Axis.Horizontal), (int)Axis.Horizontal);
+            _axisButton.AddItem(nameof(Axis.HorizontalReverse), (int)Axis.HorizontalReverse);
+            _axisButton.AddItem(nameof(Axis.Vertical), (int)Axis.Vertical);
+            _axisButton.AddItem(nameof(Axis.VerticalReverse), (int)Axis.VerticalReverse);
+
+            _axisButton.OnItemSelected += args =>
+            {
+                _axisButton.SelectId(args.Id);
+                container.LayoutAxis = (Axis)args.Id;
+            };
+
+            _justifyButton.AddItem(nameof(ItemJustification.Begin), (int)ItemJustification.Begin);
+            _justifyButton.AddItem(nameof(ItemJustification.Center), (int)ItemJustification.Center);
+            _justifyButton.AddItem(nameof(ItemJustification.End), (int)ItemJustification.End);
+
+            _justifyButton.OnItemSelected += args =>
+            {
+                _justifyButton.SelectId(args.Id);
+                container.Justification = (ItemJustification)args.Id;
+            };
+
+            _equalSizeBox.OnPressed += _ => container.EqualSize = _equalSizeBox.Pressed;
+            _reverseBox.OnPressed += _ => container.Reverse = _reverseBox.Pressed;
+
+            _separationEdit.OnTextChanged += args =>
+            {
+                if (!int.TryParse(args.Text, out var sep))
+                    sep = 0;
+
+                container.SeparationOverride = sep;
+            };
+
+            _crossSeparationEdit.OnTextChanged += args =>
+            {
+                if (!int.TryParse(args.Text, out var sep))
+                    sep = 0;
+
+                container.CrossSeparationOverride = sep;
+            };
+        }
+    }
+}

Robust.Client/Console/Commands/UITestCommand.cs

@@ -4,8 +4,6 @@ using Robust.Client.UserInterface;
 using Robust.Client.UserInterface.Controls;
 using Robust.Client.UserInterface.CustomControls;
 using Robust.Shared.Console;
-using Robust.Shared.IoC;
-using Robust.Shared.Localization;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
 
@@ -44,7 +42,10 @@ Suspendisse hendrerit blandit urna ut laoreet. Suspendisse ac elit at erat males
         var progressBar = new ProgressBar { MaxValue = 10, Value = 5 };
         vBox.AddChild(progressBar);
 
-        var optionButton = new OptionButton();
+        var optionButton = new OptionButton
+        {
+            ToolTip = "This button has a tooltip. Spooky!"
+        };
         optionButton.AddItem("Honk");
         optionButton.AddItem("Foo");
         optionButton.AddItem("Bar");
@@ -154,6 +155,8 @@ Suspendisse hendrerit blandit urna ut laoreet. Suspendisse ac elit at erat males
 
         _sprite = new TabSpriteView();
         _tabContainer.AddChild(_sprite);
+        _tabContainer.AddChild(TabCursorShapes());
+        _tabContainer.AddChild(new TabWrapContainer { Name = nameof(Tab.WrapContainer) });
     }
 
     public void OnClosed()
@@ -210,6 +213,53 @@ Suspendisse hendrerit blandit urna ut laoreet. Suspendisse ac elit at erat males
         return label;
     }
 
+    private Control TabCursorShapes()
+    {
+        var box = new BoxContainer
+        {
+            Orientation = BoxContainer.LayoutOrientation.Vertical,
+        };
+        var styleBox = new StyleBoxFlat
+        {
+            BackgroundColor = Color.Black
+        };
+        foreach (var cursorName in Enum.GetNames<CursorShape>())
+        {
+            // Go over names due to duplicate definitions in the enum.
+            var cursor = Enum.Parse<CursorShape>(cursorName);
+            // Wow was I bad at API design.
+            if (cursor == CursorShape.Custom)
+                continue;
+
+            var panel = new PanelContainer
+            {
+                PanelOverride = styleBox,
+                DefaultCursorShape = cursor,
+                MouseFilter = MouseFilterMode.Stop,
+                MinHeight = 30,
+                Children =
+                {
+                    new Label
+                    {
+                        Text = cursorName,
+                        VerticalAlignment = VAlignment.Center,
+                        Margin = new Thickness(4)
+                    }
+                }
+            };
+
+            box.AddChild(panel);
+        }
+
+        return new ScrollContainer
+        {
+            Children = { box },
+            VScrollEnabled = true,
+            HScrollEnabled = false,
+            Name = nameof(Tab.TabCursorShapes),
+        };
+    }
+
     public void SelectTab(Tab tab)
     {
         _tabContainer.CurrentTab = (int)tab;
@@ -226,32 +276,14 @@ Suspendisse hendrerit blandit urna ut laoreet. Suspendisse ac elit at erat males
         TextEdit = 6,
         RichText = 7,
         SpriteView = 8,
+        TabCursorShapes = 9,
+        WrapContainer = 10,
     }
 }
 
-internal sealed class UITestCommand : LocalizedCommands
+internal abstract class BaseUITestCommand : LocalizedCommands
 {
-    public override string Command => "uitest";
-
-    public override void Execute(IConsoleShell shell, string argStr, string[] args)
-    {
-        var window = new DefaultWindow { MinSize = new(800, 600) };
-        var control = new UITestControl();
-        window.OnClose += control.OnClosed;
-        window.Contents.AddChild(control);
-
-        window.OpenCentered();
-    }
-}
-
-internal sealed class UITest2Command : LocalizedCommands
-{
-    [Dependency] private readonly IClyde _clyde = default!;
-    [Dependency] private readonly IUserInterfaceManager _uiMgr = default!;
-
-    public override string Command => "uitest2";
-
-    public override void Execute(IConsoleShell shell, string argStr, string[] args)
+    public sealed override void Execute(IConsoleShell shell, string argStr, string[] args)
     {
         if (args.Length > 1)
         {
@@ -272,18 +304,10 @@ internal sealed class UITest2Command : LocalizedCommands
             control.SelectTab(tab);
         }
 
-        var window = _clyde.CreateWindow(new WindowCreateParameters
-        {
-            Title = Loc.GetString("cmd-uitest2-title"),
-        });
-
-        var root = _uiMgr.CreateWindowRoot(window);
-        window.DisposeOnClose = true;
-        window.RequestClosed += _ => control.OnClosed();
-        root.AddChild(control);
+        CreateWindow(control);
     }
 
-    public override CompletionResult GetCompletion(IConsoleShell shell, string[] args)
+    public sealed override CompletionResult GetCompletion(IConsoleShell shell, string[] args)
     {
         if (args.Length == 1)
         {
@@ -294,4 +318,35 @@ internal sealed class UITest2Command : LocalizedCommands
 
         return CompletionResult.Empty;
     }
+
+    protected abstract void CreateWindow(UITestControl control);
+}
+
+internal sealed class UITestCommand : BaseUITestCommand
+{
+    public override string Command => "uitest";
+
+    protected override void CreateWindow(UITestControl control)
+    {
+        var window = new DefaultWindow { MinSize = new(800, 600) };
+        window.OnClose += control.OnClosed;
+        window.Contents.AddChild(control);
+        window.OpenCentered();
+    }
+}
+
+internal sealed class UITest2Command : BaseUITestCommand
+{
+    public override string Command => "uitest2";
+
+    protected override void CreateWindow(UITestControl control)
+    {
+        var window = new OSWindow
+        {
+            Title = Loc.GetString("cmd-uitest2-title"),
+        };
+        window.AddChild(control);
+        window.Closed += control.OnClosed;
+        window.Show();
+    }
 }

Robust.Client/Console/Commands/ViewportDebugCommands.cs

@@ -0,0 +1,44 @@
+#if TOOLS
+
+using Robust.Client.Graphics;
+using Robust.Shared.Console;
+using Robust.Shared.IoC;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Console.Commands;
+
+internal sealed class ViewportClearAllCachedCommand : IConsoleCommand
+{
+    [Dependency] private readonly IClydeInternal _clyde = default!;
+
+    public string Command => "vp_clear_all_cached";
+    public string Description => "Fires IClydeViewport.ClearCachedResources on all viewports";
+    public string Help => "";
+
+    public void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        _clyde.ViewportsClearAllCached();
+    }
+}
+
+internal sealed class ViewportTestFinalizeCommand : IConsoleCommand
+{
+    [Dependency] private readonly IClyde _clyde = default!;
+    [Dependency] private readonly IEyeManager _eyeManager = default!;
+
+    public string Command => "vp_test_finalize";
+    public string Description => "Creates a viewport, renders it once, then leaks it (finalizes it).";
+    public string Help => "";
+
+    public void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        var vp = _clyde.CreateViewport(new Vector2i(1920, 1080), nameof(ViewportTestFinalizeCommand));
+        vp.Eye = _eyeManager.CurrentEye;
+
+        vp.Render();
+
+        // Leak it.
+    }
+}
+
+#endif // TOOLS

Robust.Client/Console/Completions.cs

@@ -85,7 +85,7 @@ namespace Robust.Client.Console
                 MouseFilter = MouseFilterMode.Stop;
                 Result = result;
                 var compl = new FormattedMessage();
-                var dim = Color.FromHsl((0f, 0f, 0.8f, 1f));
+                var dim = Color.FromHsl(new Vector4(0f, 0f, 0.8f, 1f));
 
                 // warning: ew ahead
                 string basen = "default";

Robust.Client/Debugging/DebugAnchoringSystem.cs

@@ -82,7 +82,7 @@ namespace Robust.Client.Debugging
 
             foreach (var ent in _mapSystem.GetAnchoredEntities(gridUid, grid, spot))
             {
-                if (TryComp<MetaDataComponent>(ent, out var meta))
+                if (TryComp(ent, out MetaDataComponent? meta))
                 {
                     text.AppendLine($"uid: {ent}, {meta.EntityName}");
                 }

Robust.Client/Debugging/OverlayCommand.cs

@@ -0,0 +1,53 @@
+using System;
+using Robust.Client.Graphics;
+using Robust.Shared.IoC;
+using Robust.Shared.Toolshed;
+using Robust.Shared.Toolshed.TypeParsers;
+using Robust.Shared.Utility;
+
+namespace Robust.Client.Debugging;
+
+[ToolshedCommand]
+internal sealed class OverlayCommand : ToolshedCommand
+{
+    [Dependency] private readonly IOverlayManager _overlay = default!;
+    [Dependency] private readonly IDynamicTypeFactoryInternal _factory = default!;
+
+    [CommandImplementation("toggle")]
+    internal void Toggle([CommandArgument(customParser:typeof(ReflectionTypeParser<Overlay>))] Type overlay)
+    {
+        if (!overlay.IsSubclassOf(typeof(Overlay)))
+            throw new ArgumentException("Type must be a subclass of overlay");
+
+        if (_overlay.HasOverlay(overlay))
+            Remove(overlay);
+        else
+            Add(overlay);
+    }
+
+    [CommandImplementation("add")]
+    internal void Add([CommandArgument(customParser: typeof(ReflectionTypeParser<Overlay>))] Type overlay)
+    {
+        if (!overlay.IsSubclassOf(typeof(Overlay)))
+            throw new ArgumentException("Type must be a subclass of overlay");
+
+        if (!overlay.HasParameterlessConstructor())
+            throw new ArgumentException("Type must have parameterless constructor");
+
+        if (_overlay.HasOverlay(overlay))
+            return;
+
+        // TODO OVERLAYS Give overlays the ContentAccessAllowedAttribute?
+        var instance = (Overlay) _factory.CreateInstanceUnchecked(overlay, oneOff: true);
+        if (instance is IPostInjectInit init)
+            init.PostInject();
+
+        _overlay.AddOverlay(instance);
+    }
+
+    [CommandImplementation("remove")]
+    public void Remove([CommandArgument(customParser: typeof(ReflectionTypeParser<Overlay>))] Type overlay)
+    {
+        _overlay.RemoveOverlay(overlay);
+    }
+}

Robust.Client/Debugging/Overlays/TileDebugOverlay.cs

@@ -0,0 +1,229 @@
+using System;
+using System.Collections.Generic;
+using System.Numerics;
+using JetBrains.Annotations;
+using Robust.Client.GameObjects;
+using Robust.Client.Graphics;
+using Robust.Client.Input;
+using Robust.Client.ResourceManagement;
+using Robust.Client.UserInterface;
+using Robust.Client.UserInterface.CustomControls;
+using Robust.Shared.Enums;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Map;
+using Robust.Shared.Map.Components;
+using Robust.Shared.Maths;
+
+namespace Robust.Client.Debugging.Overlays;
+
+/// <summary>
+/// This is an abstract helper class that can be used to create simple debug overlays that need to render tile based data.
+/// </summary>
+[UsedImplicitly]
+public abstract class TileDebugOverlay : Overlay, IPostInjectInit
+{
+    [Dependency] protected readonly IEntityManager Entity = default!;
+    [Dependency] protected readonly IEyeManager Eye = default!;
+    [Dependency] protected readonly IMapManager MapMan = default!;
+    [Dependency] protected readonly IInputManager Input = default!;
+    [Dependency] protected readonly IUserInterfaceManager Ui = default!;
+    [Dependency] protected readonly IResourceCache Cache = default!;
+
+    protected SharedTransformSystem Transform = default!;
+    protected MapSystem Map = default!;
+    protected EntityLookupSystem Lookup = default!;
+
+    public override OverlaySpace Space => OverlaySpace.WorldSpace | OverlaySpace.ScreenSpace;
+
+    protected Font Font = default!;
+    protected List<Entity<MapGridComponent>> Grids = new();
+
+    public void PostInject()
+    {
+        Transform = Entity.System<SharedTransformSystem>();
+        Map = Entity.System<MapSystem>();
+        Lookup = Entity.System<EntityLookupSystem>();
+        var font = Cache.GetResource<FontResource>("/Fonts/NotoSans/NotoSans-Regular.ttf");
+        Font = new VectorFont(font, 8);
+        Init();
+    }
+
+    protected virtual void Init()
+    {
+    }
+
+    protected internal override void Draw(in OverlayDrawArgs args)
+    {
+        Grids.Clear();
+        if (args.Viewport.Eye?.Position.MapId is not {} map || map == MapId.Nullspace)
+            return;
+
+        MapMan.FindGridsIntersecting(map, args.WorldBounds, ref Grids);
+
+        foreach (var grid in Grids)
+        {
+            switch (args.Space)
+            {
+                case OverlaySpace.ScreenSpace:
+                    DrawScreen(args, grid);
+                    break;
+                case OverlaySpace.WorldSpace:
+                    DrawWorld(args, grid);
+                    break;
+            }
+        }
+
+        Grids.Clear();
+    }
+
+    protected virtual void DrawScreen(in OverlayDrawArgs args, Entity<MapGridComponent> grid)
+    {
+        var handle = args.ScreenHandle;
+        var (_, _, matrix, invMatrix) = Transform.GetWorldPositionRotationMatrixWithInv(grid.Owner);
+        var gridBounds = invMatrix.TransformBox(args.WorldBounds).Enlarged(grid.Comp.TileSize * 2);
+        var tilesEnumerator = Map.GetLocalTilesEnumerator(grid, grid, gridBounds);
+        while (tilesEnumerator.MoveNext(out var tile))
+        {
+            var tileBounds = Lookup.GetLocalBounds(tile, grid.Comp.TileSize);
+            if (!gridBounds.Intersects(tileBounds))
+                continue;
+            var screenTileCentre = Eye.WorldToScreen(Vector2.Transform(tileBounds.Center, matrix));
+            DrawTileText(handle, screenTileCentre, tile.GridIndices, grid);
+        }
+
+        // Draw mouse tooltip
+        DrawTooltip(handle);
+
+    }
+
+    protected virtual void DrawTooltip(DrawingHandleScreen handle)
+    {
+        var mousePos = Input.MouseScreenPosition;
+        if (!mousePos.IsValid)
+            return;
+
+        if (Ui.MouseGetControl(mousePos) is not IViewportControl viewport)
+            return;
+
+        var coords = viewport.PixelToMap(mousePos.Position);
+
+        if (!MapMan.TryFindGridAt(coords, out var grid, out var comp))
+            return;
+
+        var local = Map.WorldToLocal(grid, comp, coords.Position);
+        var x = (int) Math.Floor(local.X / comp.TileSize);
+        var y = (int) Math.Floor(local.Y / comp.TileSize);
+        var indices = new Vector2i(x, y);
+
+        DrawTooltip(handle, mousePos.Position, local, indices, (grid, comp));
+    }
+
+    /// <summary>
+    /// Draw a tooltip around the mouse
+    /// </summary>
+    /// <param name="mouseScreen">The mouse's screen coordinates</param>
+    /// <param name="mouseLocal">The mouse's local grid coordinates</param>
+    /// <param name="indices">The mouse's tile indices</param>
+    /// <param name="grid">The grid that the mouse is hovering over</param>
+    protected virtual void DrawTooltip(DrawingHandleScreen handle, Vector2 mouseScreen, Vector2 mouseLocal, Vector2i indices, Entity<MapGridComponent> grid)
+    {
+        if (GetTooltip(mouseLocal, indices, grid) is not { } text)
+            return;
+
+        var lineHeight = Font.GetLineHeight(1f);
+        var offset = new Vector2(0, lineHeight);
+        handle.DrawString(Font, mouseScreen - offset, text);
+    }
+
+    protected virtual void DrawTileText(DrawingHandleScreen handle, Vector2 tileCentre, Vector2i indices, Entity<MapGridComponent> grid)
+    {
+        if (GetText(indices, grid) is {} text)
+            handle.DrawString(Font, tileCentre, text);
+    }
+
+    protected virtual void DrawWorld(in OverlayDrawArgs args, Entity<MapGridComponent> grid)
+    {
+        var handle = args.WorldHandle;
+        var (_, _, matrix, invMatrix) = Transform.GetWorldPositionRotationMatrixWithInv(grid.Owner);
+        var gridBounds = invMatrix.TransformBox(args.WorldBounds).Enlarged(grid.Comp.TileSize * 2);
+        var tilesEnumerator = Map.GetLocalTilesEnumerator(grid, grid, gridBounds);
+        while (tilesEnumerator.MoveNext(out var tile))
+        {
+            handle.SetTransform(matrix);
+            var tileBounds = Lookup.GetLocalBounds(tile, grid.Comp.TileSize);
+            if (gridBounds.Intersects(tileBounds))
+                DrawTile(handle, tileBounds, tile.GridIndices, grid);
+        }
+
+        handle.SetTransform(Matrix3x2.Identity);
+    }
+
+    protected virtual void DrawTile(DrawingHandleWorld handle, Box2 tile, Vector2i indices, Entity<MapGridComponent> grid)
+    {
+        if (GetColor(indices, grid) is not { } color)
+            return;
+
+        handle.DrawRect(tile, color.Border, filled: false);
+        handle.DrawRect(tile, color.Fill, filled: true);
+    }
+
+    /// <summary>
+    /// Get text that will be rendered in a grid tile.
+    /// </summary>
+    protected abstract string? GetText(Vector2i indices, Entity<MapGridComponent> grid);
+
+    /// <summary>
+    /// Get tooltip text that will be shown next to the mouse.
+    /// </summary>
+    /// <param name="mousePos">The mouse's position relative to the grid.</param>
+    /// <param name="gridIndices">The grid indices corresponding to the mouse's position</param>
+    /// <param name="grid">The grid that the mouse is over.</param>
+    protected abstract string? GetTooltip(Vector2 mousePos, Vector2i indices, Entity<MapGridComponent> grid);
+
+    /// <summary>
+    /// Get a border & fill color that will be used to draw a grid tile.
+    /// </summary>
+    protected abstract (Color Fill, Color Border)? GetColor(Vector2i indices, Entity<MapGridComponent> grid);
+}
+
+/// <summary>
+/// Variant of <see cref="TileDebugOverlay"/> that exists to draw simple float information for each tile.
+/// </summary>
+public abstract class TileFloatDebugOverlay : TileDebugOverlay
+{
+    protected virtual float MinValue => 0;
+    protected virtual float MaxValue => 1;
+    protected abstract float? GetData(Vector2i indices, Entity<MapGridComponent> grid);
+
+    protected override string? GetText(Vector2i indices, Entity<MapGridComponent> grid)
+    {
+        return GetData(indices, grid)?.ToString("F2");
+    }
+
+    protected override string? GetTooltip(Vector2 mousePos, Vector2i indices, Entity<MapGridComponent> grid)
+    {
+        return GetData(indices, grid)?.ToString("F2");
+    }
+
+    protected override (Color Fill, Color Border)? GetColor(Vector2i indices, Entity<MapGridComponent> grid)
+    {
+        if (GetData(indices, grid) is not { } value)
+            return null;
+
+        var color = Gradient(value, MinValue, MaxValue);
+        return (color.WithAlpha(0.2f), color);
+    }
+
+    /// <summary>
+    /// Simple yellow -> orange -> red gradient.
+    /// </summary>
+    public Color Gradient(float value, float min, float max)
+    {
+        // map min to 1, max to 0
+        value = (value - min) / (max - min);
+        return value < 0.5f
+            ? Color.InterpolateBetween(Color.Yellow, Color.Orange, value * 2)
+            : Color.InterpolateBetween(Color.Orange, Color.Red, (value - 0.5f) * 2);
+    }
+}

Robust.Client/GameController/GameController.Standalone.cs

@@ -8,6 +8,7 @@ using Robust.Shared.IoC;
 using Robust.Shared.Log;
 using Robust.Shared.Timing;
 using Robust.Shared.Utility;
+using SDL3;
 
 namespace Robust.Client
 {
@@ -93,6 +94,8 @@ namespace Robust.Client
 
         public void Run(DisplayMode mode, GameControllerOptions options, Func<ILogHandler>? logHandlerFactory = null)
         {
+            _displayMode = mode;
+
             if (!StartupSystemSplash(options, logHandlerFactory))
             {
                 _logger.Fatal("Failed to start game controller!");

Robust.Client/GameController/GameController.cs

@@ -110,6 +110,8 @@ namespace Robust.Client
 
         private ResourceManifestData? _resourceManifest;
 
+        private DisplayMode _displayMode;
+
         public void SetCommandLineArgs(CommandLineArgs args)
         {
             _commandLineArgs = args;
@@ -273,6 +275,9 @@ namespace Robust.Client
                 }
             };
 
+            _configurationManager.OnValueChanged(CVars.DisplayMaxFPS, _ => UpdateVsyncConfig());
+            _configurationManager.OnValueChanged(CVars.DisplayVSync, _ => UpdateVsyncConfig(), invokeImmediately: true);
+
             _clyde.Ready();
 
             if (_resourceManifest!.AutoConnect &&
@@ -709,6 +714,30 @@ namespace Robust.Client
         }
 
 
+        private void UpdateVsyncConfig()
+        {
+            if (_displayMode == DisplayMode.Headless)
+                return;
+
+            var vsync = _configurationManager.GetCVar(CVars.DisplayVSync);
+            var maxFps = Math.Clamp(_configurationManager.GetCVar(CVars.DisplayMaxFPS), 0, 10_000);
+
+            _clyde.VsyncEnabled = vsync;
+
+            if (_mainLoop == null)
+                return;
+
+            if (vsync || maxFps == 0)
+            {
+                _mainLoop.SleepMode = SleepMode.None;
+            }
+            else
+            {
+                _mainLoop.SleepMode = SleepMode.Limit;
+                _mainLoop.LimitMinFrameTime = TimeSpan.FromSeconds(1.0 / maxFps);
+            }
+        }
+
         internal enum DisplayMode : byte
         {
             Headless,

Robust.Client/GameObjects/ClientEntityManager.cs

@@ -29,6 +29,9 @@ namespace Robust.Client.GameObjects
         internal event Action? AfterStartup;
         internal event Action? AfterShutdown;
 
+        private readonly Queue<EntityUid> _queuedPredictedDeletions = new();
+        private readonly HashSet<EntityUid> _queuedPredictedDeletionsSet = new();
+
         public override void Initialize()
         {
             SetupNetworking();
@@ -213,6 +216,34 @@ namespace Robust.Client.GameObjects
                 }
             }
 
+            using (histogram?.WithLabels("PredictedQueueDel").NewTimer())
+            {
+                while (_queuedPredictedDeletions.TryDequeue(out var uid))
+                {
+                    if (!MetaQuery.TryGetComponentInternal(uid, out var meta))
+                        continue;
+
+                    if (meta.EntityLifeStage >= EntityLifeStage.Terminating)
+                        continue;
+
+                    var xform = TransformQuery.GetComponentInternal(uid);
+                    if (meta.NetEntity.IsClientSide())
+                    {
+                        DeleteEntity(uid, meta, xform);
+                    }
+                    else
+                    {
+                        _xforms.DetachEntity(uid, xform, meta, null);
+                        // base call bypasses IGameTiming.InPrediction check
+                        // This is pretty janky and there should be a way for the client to dirty an entity outside of prediction
+                        // TODO PREDICTION
+                        base.Dirty(uid, xform, meta);
+                    }
+                }
+
+                _queuedPredictedDeletionsSet.Clear();
+            }
+
             base.TickUpdate(frameTime, noPredictions, histogram);
         }
 
@@ -317,18 +348,23 @@ namespace Robust.Client.GameObjects
             }
         }
 
-        /// <inheritdoc />
-        public override void PredictedQueueDeleteEntity(Entity<MetaDataComponent?, TransformComponent?> ent)
-        {
-            if (IsQueuedForDeletion(ent.Owner)
-                || !MetaQuery.Resolve(ent.Owner, ref ent.Comp1)
-                || ent.Comp1.EntityLifeStage >= EntityLifeStage.Terminating
-                || !TransformQuery.Resolve(ent.Owner, ref ent.Comp2))
-            {
-                return;
-            }
+        public override bool IsQueuedForDeletion(EntityUid uid)
+            => QueuedDeletionsSet.Contains(uid) || _queuedPredictedDeletions.Contains(uid);
 
-            if (ent.Comp1.NetEntity.IsClientSide())
+        /// <inheritdoc />
+        public override void PredictedQueueDeleteEntity(Entity<MetaDataComponent?> ent)
+        {
+            // Some UIs get disposed after entity-manager has shut down and already deleted all entities.
+            if (!Started)
+                return;
+
+            if (IsQueuedForDeletion(ent.Owner))
+                return;
+
+            if (!MetaQuery.Resolve(ent.Owner, ref ent.Comp, false))
+                return;
+
+            if (ent.Comp.NetEntity.IsClientSide())
             {
                 // client-side QueueDeleteEntity re-fetches MetadataComp and checks IsClientSide().
                 // base call to skip that.
@@ -337,7 +373,10 @@ namespace Robust.Client.GameObjects
             }
             else
             {
-                _xforms.DetachEntity(ent.Owner, ent.Comp2);
+                if (!_queuedPredictedDeletionsSet.Add(ent.Owner))
+                    return;
+
+                _queuedPredictedDeletions.Enqueue(ent.Owner);
             }
         }
     }

Robust.Client/GameObjects/Components/Renderable/SpriteComponent.cs

@@ -30,8 +30,6 @@ using Robust.Shared.ViewVariables;
 using DrawDepthTag = Robust.Shared.GameObjects.DrawDepth;
 using static Robust.Shared.Serialization.TypeSerializers.Implementations.SpriteSpecifierSerializer;
 using Direction = Robust.Shared.Maths.Direction;
-using Vector4 = Robust.Shared.Maths.Vector4;
-using SysVec4 = System.Numerics.Vector4;
 #pragma warning disable CS0618 // Type or member is obsolete
 
 namespace Robust.Client.GameObjects
@@ -296,6 +294,16 @@ namespace Robust.Client.GameObjects
             LocalMatrix = Matrix3Helpers.CreateTransform(in offset, in rotation, in scale);
         }
 
+        /// <summary>
+        /// If false, this will prevent any of this sprite's animated layers from looping their animation.
+        /// This will set <see cref="Layer.AutoAnimated"/> whenever any layer's animation finishes.
+        /// </summary>
+        /// <remarks>
+        /// If this is false, this effectively overrides each layer's own <see cref="Layer.Loop"/>.
+        /// </remarks>
+        [DataField]
+        public bool Loop = true;
+
         /// <summary>
         /// Update this sprite component to visibly match the current state of other at the time
         /// this is called. Does not keep them perpetually in sync.
@@ -603,6 +611,7 @@ namespace Robust.Client.GameObjects
 
             layer.RenderingStrategy = layerDatum.RenderingStrategy ?? layer.RenderingStrategy;
             layer.Cycle = layerDatum.Cycle;
+            layer.Loop = layerDatum.Loop;
 
             layer.Color = layerDatum.Color ?? layer.Color;
             layer._rotation = layerDatum.Rotation ?? layer._rotation;
@@ -1159,6 +1168,15 @@ namespace Robust.Client.GameObjects
             /// </remarks>
             [ViewVariables] public bool Cycle;
 
+            /// <summary>
+            /// If false, this will prevent the layer's animation from looping.
+            /// This will set <see cref="AutoAnimated"/> to false once the animation finishes.
+            /// </summary>
+            /// <remarks>
+            /// This may be overriden by the parent's loop property.
+            /// </remarks>
+            [ViewVariables] public bool Loop = true;
+
             // TODO SPRITE ACCESS
             internal RSI.State? _actualState;
             [ViewVariables] public RSI.State? ActualState => _actualState;
@@ -1338,6 +1356,8 @@ namespace Robust.Client.GameObjects
                 DirOffset = toClone.DirOffset;
                 _autoAnimated = toClone._autoAnimated;
                 RenderingStrategy = toClone.RenderingStrategy;
+                Cycle = toClone.Cycle;
+                Loop = toClone.Loop;
                 if (toClone.CopyToShaderParameters is { } copyToShaderParameters)
                     CopyToShaderParameters = new CopyToShaderParameters(copyToShaderParameters);
             }
@@ -1665,17 +1685,25 @@ namespace Robust.Client.GameObjects
 
             internal void AdvanceFrameAnimation(RSI.State state)
             {
-                // Can't advance frames without more than 1 delay which is already checked above.
                 var delayCount = state.DelayCount;
+
                 while (AnimationTimeLeft < 0)
                 {
                     if (Reversed)
                     {
                         AnimationFrame -= 1;
 
-                        // Animation finished, do we cycle back to positive or reset.
                         if (AnimationFrame < 0)
                         {
+                            if (!Loop || !_parent.Loop)
+                            {
+                                // stop at first frame
+                                AnimationFrame = 0;
+                                AnimationTimeLeft = 0;
+                                AutoAnimated = false;
+                                return;
+                            }
+
                             if (Cycle)
                             {
                                 AnimationFrame = 1;
@@ -1693,9 +1721,17 @@ namespace Robust.Client.GameObjects
                     {
                         AnimationFrame += 1;
 
-                        // Animation finished, do we reverse or reset.
                         if (AnimationFrame >= delayCount)
                         {
+                            if (!Loop || !_parent.Loop)
+                            {
+                                // stop at last frame
+                                AnimationFrame = delayCount - 1;
+                                AnimationTimeLeft = 0;
+                                AutoAnimated = false;
+                                return;
+                            }
+
                             if (Cycle)
                             {
                                 AnimationFrame = delayCount - 2;
@@ -1713,6 +1749,7 @@ namespace Robust.Client.GameObjects
                     AnimationTimeLeft += state.GetDelay(AnimationFrame);
                 }
             }
+
         }
 
         /// <summary>

Robust.Client/GameObjects/EntitySystems/MapSystem.cs

@@ -1,3 +1,4 @@
+using System.Diagnostics.Contracts;
 using Robust.Client.Graphics;
 using Robust.Client.Map;
 using Robust.Client.ResourceManagement;
@@ -9,13 +10,14 @@ namespace Robust.Client.GameObjects;
 
 public sealed class MapSystem : SharedMapSystem
 {
-    protected override MapId GetNextMapId()
+    [Pure]
+    internal override MapId GetNextMapId()
     {
         // Client-side map entities use negative map Ids to avoid conflict with server-side maps.
-        var id = new MapId(--LastMapId);
+        var id = new MapId(LastMapId - 1);
         while (MapExists(id) || UsedIds.Contains(id))
         {
-            id = new MapId(--LastMapId);
+            id = new MapId(id.Value - 1);
         }
         return id;
     }

Robust.Client/GameObjects/EntitySystems/PointLightSystem.cs

@@ -29,6 +29,8 @@ namespace Robust.Client.GameObjects
             component.Enabled = state.Enabled;
             component.Offset = state.Offset;
             component.Softness = state.Softness;
+            component.Falloff = state.Falloff;
+            component.CurveFactor = state.CurveFactor;
             component.CastShadows = state.CastShadows;
             component.Energy = state.Energy;
             component.Radius = state.Radius;

Robust.Client/GameObjects/EntitySystems/ScaleVisualsSystem.cs

@@ -1,25 +0,0 @@
-using System.Numerics;
-using Robust.Shared.GameObjects;
-using Robust.Shared.Maths;
-
-namespace Robust.Client.GameObjects;
-
-public sealed class ScaleVisualsSystem : EntitySystem
-{
-    public override void Initialize()
-    {
-        base.Initialize();
-        SubscribeLocalEvent<ScaleVisualsComponent, AppearanceChangeEvent>(OnChangeData);
-    }
-
-    private void OnChangeData(EntityUid uid, ScaleVisualsComponent component, ref AppearanceChangeEvent ev)
-    {
-        if (!ev.AppearanceData.TryGetValue(ScaleVisuals.Scale, out var scale) ||
-            ev.Sprite == null) return;
-
-        var vecScale = (Vector2)scale;
-
-        // Set it directly because prediction may call this multiple times.
-        ev.Sprite.Scale = vecScale;
-    }
-}

Robust.Client/GameObjects/EntitySystems/SpriteSystem.Bounds.cs

@@ -32,7 +32,7 @@ public sealed partial class SpriteSystem
                 bounds = bounds.Union(GetLocalBounds(layer));
         }
 
-        sprite.Comp._bounds = bounds;
+        sprite.Comp._bounds = bounds.Scale(sprite.Comp.Scale);
         sprite.Comp.BoundsDirty = false;
         return sprite.Comp._bounds;
     }

Robust.Client/GameObjects/EntitySystems/SpriteSystem.Component.cs

@@ -88,6 +88,7 @@ public sealed partial class SpriteSystem
 
         target.Comp.RenderOrder = source.Comp.RenderOrder;
         target.Comp.GranularLayersRendering = source.Comp.GranularLayersRendering;
+        target.Comp.Loop = source.Comp.Loop;
 
         DirtyBounds(target!);
         _tree.QueueTreeUpdate(target!);

Robust.Client/GameObjects/EntitySystems/SpriteSystem.Render.cs

@@ -7,8 +7,6 @@ using Robust.Shared.Graphics.RSI;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
 using static Robust.Client.GameObjects.SpriteComponent;
-using Vector4 = Robust.Shared.Maths.Vector4;
-using SysVec4 = System.Numerics.Vector4;
 
 namespace Robust.Client.GameObjects;
 
@@ -157,7 +155,7 @@ public sealed partial class SpriteSystem
             // Negative color modulation values are by the default shader to disable light shading.
             // Specifically we set colour = - 1 - colour
             // This is good enough to ensure that non-negative values become negative & is trivially invertible.
-            layerColor = new(new SysVec4(-1) - layerColor.RGBA);
+            layerColor = new(new Vector4(-1) - layerColor.RGBA);
         }
 
         drawingHandle.DrawTextureRectRegion(texture, quad, layerColor);

Robust.Client/GameStates/GameStateProcessor.cs

@@ -220,24 +220,34 @@ Had full state: {LastFullState != null}"
                 {
                     var compState = change.State;
 
-                    if (compState is IComponentDeltaState delta
-                        && compData.TryGetValue(change.NetID, out var old)) // May fail if relying on implicit data
+                    if (compState is not IComponentDeltaState delta)
                     {
-                        DebugTools.Assert(old is not IComponentDeltaState, "last state is not a full state");
-
-                        if (cloneDelta)
-                        {
-                            compState = delta.CreateNewFullState(old!);
-                        }
-                        else
-                        {
-                            delta.ApplyToFullState(old!);
-                            compState = old;
-                        }
-                        DebugTools.Assert(compState is not IComponentDeltaState, "newly constructed state is not a full state");
+                        compData[change.NetID] = compState;
+                        continue;
                     }
 
-                    compData[change.NetID] = compState;
+                    if (!compData.TryGetValue(change.NetID, out var old))
+                    {
+                        // Either the server needs to ensure that the initial state it sends to a client is a full
+                        // state, or the client needs to be able to construct an implicit full state (i.e., get-state
+                        // code needs to be in shared code).
+                        //
+                        // Without this, the client won't be able to reset predicted changes made to this component.
+                        DebugTools.Assert("Received delta state without having received or constructed an implicit full state");
+                        continue;
+                    }
+
+                    DebugTools.Assert(old is not IComponentDeltaState, "last state is not a full state");
+
+                    if (!cloneDelta)
+                    {
+                        delta.ApplyToFullState(old!);
+                        continue;
+                    }
+
+                    var newFull = delta.CreateNewFullState(old!);
+                    compData[change.NetID] = newFull;
+                    DebugTools.Assert(newFull is not IComponentDeltaState, "constructed state is not a full state");
                 }
 
                 if (entityState.NetComponents == null)

Robust.Client/GameStates/NetInterpOverlay.cs

@@ -13,6 +13,8 @@ namespace Robust.Client.GameStates
 {
     internal sealed class NetInterpOverlay : Overlay
     {
+        private static readonly ProtoId<ShaderPrototype> UnshadedShader = "unshaded";
+
         [Dependency] private readonly IGameTiming _timing = default!;
         [Dependency] private readonly IEntityManager _entityManager = default!;
         [Dependency] private readonly IPrototypeManager _prototypeManager = default!;
@@ -32,7 +34,7 @@ namespace Robust.Client.GameStates
         {
             IoCManager.InjectDependencies(this);
             _lookup = lookup;
-            _shader = _prototypeManager.Index<ShaderPrototype>("unshaded").Instance();
+            _shader = _prototypeManager.Index(UnshadedShader).Instance();
             _container = _entityManager.System<SharedContainerSystem>();
             _xform = _entityManager.System<SharedTransformSystem>();
         }

Robust.Client/Graphics/Clyde/Clyde.GLContext.cs

@@ -1,6 +1,5 @@
 using System;
 using Robust.Shared;
-using Robust.Shared.Log;
 
 namespace Robust.Client.Graphics.Clyde
 {

Robust.Client/Graphics/Clyde/Clyde.GridRendering.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Numerics;
 using OpenToolkit.Graphics.OpenGL4;
 using Robust.Client.ResourceManagement;
 using Robust.Shared.Enums;

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

@@ -121,6 +121,19 @@ namespace Robust.Client.Graphics.Clyde
             }
         }
 
+        public void RenderNow(IRenderTarget renderTarget, Action<IRenderHandle> callback)
+        {
+            ClearRenderState();
+
+            _renderHandle.RenderInRenderTarget(
+                renderTarget,
+                () =>
+                {
+                    callback(_renderHandle);
+                },
+                null);
+        }
+
         private void RenderSingleWorldOverlay(Overlay overlay, Viewport vp, OverlaySpace space, in Box2 worldBox, in Box2Rotated worldBounds)
         {
             // Check that entity manager has started.

Robust.Client/Graphics/Clyde/Clyde.Layout.cs

@@ -4,7 +4,6 @@ using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using JetBrains.Annotations;
 using Robust.Shared.Maths;
-using Vector3 = Robust.Shared.Maths.Vector3;
 
 namespace Robust.Client.Graphics.Clyde
 {

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

@@ -18,7 +18,6 @@ using Robust.Shared.Graphics;
 using static Robust.Shared.GameObjects.OccluderComponent;
 using Robust.Shared.Utility;
 using TextureWrapMode = Robust.Shared.Graphics.TextureWrapMode;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Graphics.Clyde
 {
@@ -452,6 +451,8 @@ namespace Robust.Client.Graphics.Clyde
             var lastPower = float.NaN;
             var lastColor = new Color(float.NaN, float.NaN, float.NaN, float.NaN);
             var lastSoftness = float.NaN;
+            var lastFalloff = float.NaN;
+            var lastCurveFactor = float.NaN;
             Texture? lastMask = null;
 
             using (_prof.Group("Draw Lights"))
@@ -505,6 +506,18 @@ namespace Robust.Client.Graphics.Clyde
                         lightShader.SetUniformMaybe("lightSoftness", lastSoftness);
                     }
 
+                    if (!MathHelper.CloseToPercent(lastFalloff, component.Falloff))
+                    {
+                        lastFalloff = component.Falloff;
+                        lightShader.SetUniformMaybe("lightFalloff", lastFalloff);
+                    }
+
+                    if (!MathHelper.CloseToPercent(lastCurveFactor, component.CurveFactor))
+                    {
+                        lastCurveFactor = component.CurveFactor;
+                        lightShader.SetUniformMaybe("lightCurveFactor", lastCurveFactor);
+                    }
+
                     lightShader.SetUniformMaybe("lightCenter", lightPos);
                     lightShader.SetUniformMaybe("lightIndex",
                         component.CastShadows ? (i + 0.5f) / ShadowTexture.Height : -1);

Robust.Client/Graphics/Clyde/Clyde.RenderTargets.cs

@@ -209,6 +209,7 @@ namespace Robust.Client.Graphics.Clyde
             var pressure = estPixSize * size.X * size.Y;
 
             var handle = AllocRid();
+            var renderTarget = new RenderTexture(size, textureObject, this, handle);
             var data = new LoadedRenderTarget
             {
                 IsWindow = false,
@@ -220,10 +221,11 @@ namespace Robust.Client.Graphics.Clyde
                 MemoryPressure = pressure,
                 ColorFormat = format.ColorFormat,
                 SampleParameters = sampleParameters,
+                Instance = new WeakReference<RenderTargetBase>(renderTarget),
+                Name = name,
             };
 
             //GC.AddMemoryPressure(pressure);
-            var renderTarget = new RenderTexture(size, textureObject, this, handle);
             _renderTargets.Add(handle, data);
             return renderTarget;
         }
@@ -301,10 +303,22 @@ namespace Robust.Client.Graphics.Clyde
             }
         }
 
-        private sealed class LoadedRenderTarget
+        public IEnumerable<(RenderTargetBase, LoadedRenderTarget)> GetLoadedRenderTextures()
+        {
+            foreach (var loaded in _renderTargets.Values)
+            {
+                if (!loaded.Instance.TryGetTarget(out var instance))
+                    continue;
+
+                yield return (instance, loaded);
+            }
+        }
+
+        internal sealed class LoadedRenderTarget
         {
             public bool IsWindow;
             public WindowId WindowId;
+            public string? Name;
 
             public Vector2i Size;
             public bool IsSrgb;
@@ -325,9 +339,11 @@ namespace Robust.Client.Graphics.Clyde
             public long MemoryPressure;
 
             public TextureSampleParameters? SampleParameters;
+
+            public required WeakReference<RenderTargetBase> Instance;
         }
 
-        private abstract class RenderTargetBase : IRenderTarget
+        internal abstract class RenderTargetBase : IRenderTarget
         {
             protected readonly Clyde Clyde;
             private bool _disposed;
@@ -389,7 +405,7 @@ namespace Robust.Client.Graphics.Clyde
             }
         }
 
-        private sealed class RenderTexture : RenderTargetBase, IRenderTexture
+        internal sealed class RenderTexture : RenderTargetBase, IRenderTexture
         {
             public RenderTexture(Vector2i size, ClydeTexture texture, Clyde clyde, ClydeHandle handle)
                 : base(clyde, handle)

Robust.Client/Graphics/Clyde/Clyde.Rendering.cs

@@ -11,8 +11,6 @@ using Robust.Shared.Graphics;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
 using TKStencilOp = OpenToolkit.Graphics.OpenGL4.StencilOp;
-using Vector3 = Robust.Shared.Maths.Vector3;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Graphics.Clyde
 {
@@ -541,7 +539,7 @@ namespace Robust.Client.Graphics.Clyde
                     case Matrix3x2 matrix3:
                         program.SetUniform(name, matrix3);
                         break;
-                    case Matrix4 matrix4:
+                    case Matrix4x4 matrix4:
                         program.SetUniform(name, matrix4);
                         break;
                     case ClydeTexture clydeTexture:

Robust.Client/Graphics/Clyde/Clyde.Shaders.cs

@@ -10,8 +10,6 @@ using Robust.Shared.Graphics;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
 using Robust.Shared.ViewVariables;
-using Vector3 = Robust.Shared.Maths.Vector3;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Graphics.Clyde
 {
@@ -528,7 +526,7 @@ namespace Robust.Client.Graphics.Clyde
                 data.Parameters[name] = value;
             }
 
-            private protected override void SetParameterImpl(string name, in Matrix4 value)
+            private protected override void SetParameterImpl(string name, in Matrix4x4 value)
             {
                 var data = Parent._shaderInstances[Handle];
                 data.ParametersDirty = true;

Robust.Client/Graphics/Clyde/Clyde.Viewport.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Numerics;
 using Robust.Client.UserInterface.CustomControls;
@@ -15,10 +16,14 @@ namespace Robust.Client.Graphics.Clyde
         private readonly Dictionary<ClydeHandle, WeakReference<Viewport>> _viewports =
             new();
 
+        private long _nextViewportId = 1;
+
+        private readonly ConcurrentQueue<ViewportDisposeData> _viewportDisposeQueue = new();
+
         private Viewport CreateViewport(Vector2i size, TextureSampleParameters? sampleParameters = default, string? name = null)
         {
             var handle = AllocRid();
-            var viewport = new Viewport(handle, name, this)
+            var viewport = new Viewport(_nextViewportId++, handle, name, this)
             {
                 Size = size,
                 RenderTarget = CreateRenderTarget(size,
@@ -59,28 +64,43 @@ namespace Robust.Client.Graphics.Clyde
 
         private void FlushViewportDispose()
         {
-            // Free of allocations unless a dead viewport is found.
-            List<ClydeHandle>? toRemove = null;
-            foreach (var (handle, viewportRef) in _viewports)
+            while (_viewportDisposeQueue.TryDequeue(out var data))
             {
-                if (!viewportRef.TryGetTarget(out _))
-                {
-                    toRemove ??= new List<ClydeHandle>();
-                    toRemove.Add(handle);
-                }
-            }
-
-            if (toRemove == null)
-            {
-                return;
-            }
-
-            foreach (var remove in toRemove)
-            {
-                _viewports.Remove(remove);
+                DisposeViewport(data);
             }
         }
 
+        private void DisposeViewport(ViewportDisposeData disposeData)
+        {
+            _clydeSawmill.Warning($"Viewport {disposeData.Id} got leaked");
+
+            _viewports.Remove(disposeData.Handle);
+            if (disposeData.ClearEvent is not { } clearEvent)
+                return;
+
+            try
+            {
+                clearEvent(disposeData.ClearEventData);
+            }
+            catch (Exception ex)
+            {
+                _clydeSawmill.Error($"Caught exception while disposing viewport: {ex}");
+            }
+        }
+
+#if TOOLS
+        public void ViewportsClearAllCached()
+        {
+            foreach (var vpRef in _viewports.Values)
+            {
+                if (!vpRef.TryGetTarget(out var vp))
+                    continue;
+
+                vp.FireClear();
+            }
+        }
+#endif // TOOLS
+
         private sealed class Viewport : IClydeViewport
         {
             private readonly ClydeHandle _handle;
@@ -106,17 +126,20 @@ namespace Robust.Client.Graphics.Clyde
 
             public string? Name { get; }
 
-            public Viewport(ClydeHandle handle, string? name, Clyde clyde)
+            public Viewport(long id, ClydeHandle handle, string? name, Clyde clyde)
             {
                 Name = name;
                 _handle = handle;
                 _clyde = clyde;
+                Id = id;
             }
 
             public Vector2i Size { get; set; }
+            public event Action<ClearCachedViewportResourcesEvent>? ClearCachedResources;
             public Color? ClearColor { get; set; } = Color.Black;
             public Vector2 RenderScale { get; set; } = Vector2.One;
             public bool AutomaticRender { get; set; }
+            public long Id { get; }
 
             void IClydeViewport.Render()
             {
@@ -186,20 +209,56 @@ namespace Robust.Client.Graphics.Clyde
                 _clyde.RenderOverlaysDirect(this, control, handle, OverlaySpace.ScreenSpace, viewportBounds);
             }
 
+            ~Viewport()
+            {
+                _clyde._viewportDisposeQueue.Enqueue(DisposeData(referenceSelf: false));
+            }
+
             public void Dispose()
             {
+                GC.SuppressFinalize(this);
+
                 RenderTarget.Dispose();
                 LightRenderTarget.Dispose();
                 WallMaskRenderTarget.Dispose();
                 WallBleedIntermediateRenderTarget1.Dispose();
                 WallBleedIntermediateRenderTarget2.Dispose();
 
-                _clyde._viewports.Remove(_handle);
+                _clyde.DisposeViewport(DisposeData(referenceSelf: false));
+            }
+
+            private ViewportDisposeData DisposeData(bool referenceSelf)
+            {
+                return new ViewportDisposeData
+                {
+                    Handle = _handle,
+                    Id = Id,
+                    ClearEvent = ClearCachedResources,
+                    ClearEventData = MakeClearEvent(referenceSelf)
+                };
+            }
+
+            private ClearCachedViewportResourcesEvent MakeClearEvent(bool referenceSelf)
+            {
+                return new ClearCachedViewportResourcesEvent(Id, referenceSelf ? this : null);
+            }
+
+            public void FireClear()
+            {
+                ClearCachedResources?.Invoke(MakeClearEvent(referenceSelf: true));
             }
 
             IRenderTexture IClydeViewport.RenderTarget => RenderTarget;
             IRenderTexture IClydeViewport.LightRenderTarget => LightRenderTarget;
             public IEye? Eye { get; set; }
         }
+
+        private sealed class ViewportDisposeData
+        {
+            public ClydeHandle Handle;
+            public long Id;
+            public Action<ClearCachedViewportResourcesEvent>? ClearEvent;
+            public ClearCachedViewportResourcesEvent ClearEventData;
+        }
     }
 }

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

@@ -2,6 +2,7 @@
 using System.Collections.Generic;
 using System.Diagnostics.CodeAnalysis;
 using System.Numerics;
+using System.Runtime.InteropServices;
 using System.Threading;
 using System.Threading.Tasks;
 using Robust.Client.Input;
@@ -101,6 +102,10 @@ namespace Robust.Client.Graphics.Clyde
 
             _windowingThread = Thread.CurrentThread;
 
+            // Default to SDL3 on ARM64. GLFW is not feature complete there (lacking file dialog implementation)
+            if (RuntimeInformation.ProcessArchitecture == Architecture.Arm64)
+                _cfg.SetCVar(CVars.DisplayWindowingApi, "sdl3");
+
             var windowingApi = _cfg.GetCVar(CVars.DisplayWindowingApi);
             IWindowingImpl winImpl;
 
@@ -349,15 +354,17 @@ namespace Robust.Client.Graphics.Clyde
                 _windowHandles.Add(reg.Handle);
 
                 var rtId = AllocRid();
+                var renderTarget = new RenderWindow(this, rtId);
                 _renderTargets.Add(rtId, new LoadedRenderTarget
                 {
                     Size = reg.FramebufferSize,
                     IsWindow = true,
                     WindowId = reg.Id,
-                    IsSrgb = true
+                    IsSrgb = true,
+                    Instance = new WeakReference<RenderTargetBase>(renderTarget),
                 });
 
-                reg.RenderTarget = new RenderWindow(this, rtId);
+                reg.RenderTarget = renderTarget;
 
                 _glContext!.WindowCreated(glSpec, reg);
             }
@@ -374,6 +381,8 @@ namespace Robust.Client.Graphics.Clyde
             if (reg.IsDisposed)
                 return;
 
+            _sawmillWin.Debug($"Destroying window {reg.Id}");
+
             reg.IsDisposed = true;
 
             _glContext!.WindowDestroyed(reg);
@@ -398,10 +407,17 @@ namespace Robust.Client.Graphics.Clyde
             _glContext?.SwapAllBuffers();
         }
 
-        private void VSyncChanged(bool newValue)
+        public bool VsyncEnabled
         {
-            _vSync = newValue;
-            _glContext?.UpdateVSync();
+            get => _vSync;
+            set
+            {
+                if (_vSync == value)
+                    return;
+
+                _vSync = value;
+                _glContext?.UpdateVSync();
+            }
         }
 
         private void WindowModeChanged(int mode)

Robust.Client/Graphics/Clyde/Clyde.cs

@@ -114,7 +114,6 @@ namespace Robust.Client.Graphics.Clyde
             _proto.PrototypesReloaded += OnProtoReload;
 
             _cfg.OnValueChanged(CVars.DisplayOGLCheckErrors, b => _checkGLErrors = b, true);
-            _cfg.OnValueChanged(CVars.DisplayVSync, VSyncChanged, true);
             _cfg.OnValueChanged(CVars.DisplayWindowMode, WindowModeChanged, true);
             _cfg.OnValueChanged(CVars.LightResolutionScale, LightResolutionScaleChanged, true);
             _cfg.OnValueChanged(CVars.MaxShadowcastingLights, MaxShadowcastingLightsChanged, true);
@@ -128,7 +127,11 @@ namespace Robust.Client.Graphics.Clyde
             // macOS cannot.
             if (OperatingSystem.IsWindows() || OperatingSystem.IsLinux())
                 _cfg.OverrideDefault(CVars.DisplayThreadWindowApi, true);
-
+#if MACOS
+            // Trust macOS to not need threaded window blitting.
+            // (threaded window blitting is a workaround to avoid having to frequently MakeCurrent() on Windows, as it is broken).
+            _cfg.OverrideDefault(CVars.DisplayThreadWindowBlit, false);
+#endif
             _threadWindowBlit = _cfg.GetCVar(CVars.DisplayThreadWindowBlit);
             _threadWindowApi = _cfg.GetCVar(CVars.DisplayThreadWindowApi);
 

Robust.Client/Graphics/Clyde/ClydeHeadless.cs

@@ -17,8 +17,6 @@ using Robust.Shared.Timing;
 using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.PixelFormats;
 using Color = Robust.Shared.Maths.Color;
-using Vector3 = Robust.Shared.Maths.Vector3;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Graphics.Clyde
 {
@@ -36,6 +34,7 @@ namespace Robust.Client.Graphics.Clyde
         public bool IsFocused => true;
         private readonly List<IClydeWindow> _windows = new();
         private int _nextWindowId = 2;
+        private long _nextViewportId = 1;
 
         public ShaderInstance InstanceShader(ShaderSourceResource handle, bool? light = null, ShaderBlendMode? blend = null)
         {
@@ -77,6 +76,11 @@ namespace Robust.Client.Graphics.Clyde
             return [];
         }
 
+        public IEnumerable<(Clyde.RenderTargetBase, Clyde.LoadedRenderTarget)> GetLoadedRenderTextures()
+        {
+            return [];
+        }
+
         public ClydeDebugLayers DebugLayers { get; set; }
 
         public string GetKeyName(Keyboard.Key key) => string.Empty;
@@ -242,7 +246,7 @@ namespace Robust.Client.Graphics.Clyde
         public IClydeViewport CreateViewport(Vector2i size, TextureSampleParameters? sampleParameters,
             string? name = null)
         {
-            return new Viewport(size);
+            return new Viewport(_nextViewportId++, size);
         }
 
         public IEnumerable<IClydeMonitor> EnumerateMonitors()
@@ -309,6 +313,19 @@ namespace Robust.Client.Graphics.Clyde
 
         public IFileDialogManagerImplementation? FileDialogImpl => null;
 
+        public bool VsyncEnabled { get; set; }
+
+#if TOOLS
+        public void ViewportsClearAllCached()
+        {
+            throw new NotImplementedException();
+        }
+#endif // TOOLS
+
+        public void RenderNow(IRenderTarget renderTarget, Action<IRenderHandle> callback)
+        {
+        }
+
         private sealed class DummyCursor : ICursor
         {
             public void Dispose()
@@ -398,7 +415,7 @@ namespace Robust.Client.Graphics.Clyde
             {
             }
 
-            private protected override void SetParameterImpl(string name, in Matrix4 value)
+            private protected override void SetParameterImpl(string name, in Matrix4x4 value)
             {
             }
 
@@ -484,15 +501,19 @@ namespace Robust.Client.Graphics.Clyde
 
         private sealed class Viewport : IClydeViewport
         {
-            public Viewport(Vector2i size)
+            public Viewport(long id, Vector2i size)
             {
                 Size = size;
+                Id = id;
             }
 
             public void Dispose()
             {
+                ClearCachedResources?.Invoke(new ClearCachedViewportResourcesEvent(Id, null));
             }
 
+            public long Id { get; }
+
             public IRenderTexture RenderTarget { get; } =
                 new DummyRenderTexture(Vector2i.One, new DummyTexture(Vector2i.One));
 
@@ -501,6 +522,7 @@ namespace Robust.Client.Graphics.Clyde
 
             public IEye? Eye { get; set; }
             public Vector2i Size { get; }
+            public event Action<ClearCachedViewportResourcesEvent>? ClearCachedResources;
             public Color? ClearColor { get; set; } = Color.Black;
             public Vector2 RenderScale { get; set; }
             public bool AutomaticRender { get; set; }

Robust.Client/Graphics/Clyde/GLContext/GLContextWindow.cs

@@ -102,6 +102,8 @@ namespace Robust.Client.Graphics.Clyde
             {
                 var data = _windowData[reg.Id];
                 data.BlitDoneEvent?.Set();
+                // Set events so blit thread properly wakes up and notices it needs to shut down.
+                data.BlitStartEvent?.Set();
 
                 _windowData.Remove(reg.Id);
             }
@@ -326,11 +328,14 @@ namespace Robust.Client.Graphics.Clyde
             {
                 reg.RenderTexture?.Dispose();
 
-                reg.RenderTexture = Clyde.CreateRenderTarget(reg.Reg.FramebufferSize, new RenderTargetFormatParameters
-                {
-                    ColorFormat = RenderTargetColorFormat.Rgba8Srgb,
-                    HasDepthStencil = true
-                });
+                reg.RenderTexture = Clyde.CreateRenderTarget(
+                    reg.Reg.FramebufferSize,
+                    new RenderTargetFormatParameters
+                    {
+                        ColorFormat = RenderTargetColorFormat.Rgba8Srgb,
+                        HasDepthStencil = true
+                    },
+                    name: $"{reg.Reg.Id}-RenderTexture");
                 // Necessary to correctly sync multi-context blitting.
                 reg.RenderTexture.MakeGLFence = true;
             }

Robust.Client/Graphics/Clyde/GLObjects/Clyde.ShaderProgram.cs

@@ -5,8 +5,6 @@ using System.Runtime.CompilerServices;
 using OpenToolkit.Graphics.OpenGL4;
 using Robust.Shared.Maths;
 using Robust.Shared.Utility;
-using Vector3 = Robust.Shared.Maths.Vector3;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Graphics.Clyde
 {
@@ -277,20 +275,20 @@ namespace Robust.Client.Graphics.Clyde
                 _clyde.CheckGlError();
             }
 
-            public void SetUniform(string uniformName, in Matrix4 matrix, bool transpose=true)
+            public void SetUniform(string uniformName, in Matrix4x4 matrix, bool transpose=true)
             {
                 var uniformId = GetUniform(uniformName);
                 SetUniformDirect(uniformId, matrix, transpose);
             }
 
             [MethodImpl(MethodImplOptions.AggressiveInlining)]
-            private unsafe void SetUniformDirect(int uniformId, in Matrix4 value, bool transpose=true)
+            private unsafe void SetUniformDirect(int uniformId, in Matrix4x4 value, bool transpose=true)
             {
-                Matrix4 tmpTranspose = value;
+                Matrix4x4 tmpTranspose = value;
                 if (transpose)
                 {
                     // transposition not supported on GLES2, & no access to _hasGLES
-                    tmpTranspose.Transpose();
+                    tmpTranspose = Matrix4x4.Transpose(value);
                 }
                 GL.UniformMatrix4(uniformId, 1, false, (float*) &tmpTranspose);
                 _clyde.CheckGlError();
@@ -551,7 +549,7 @@ namespace Robust.Client.Graphics.Clyde
                 }
             }
 
-            public void SetUniformMaybe(string uniformName, in Matrix4 value, bool transpose=true)
+            public void SetUniformMaybe(string uniformName, in Matrix4x4 value, bool transpose=true)
             {
                 if (TryGetUniform(uniformName, out var slot))
                 {

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

@@ -128,6 +128,19 @@ namespace Robust.Client.Graphics.Clyde
                 AddStandardCursor(StandardCursorShape.Hand, CursorShape.Hand);
                 AddStandardCursor(StandardCursorShape.HResize, CursorShape.HResize);
                 AddStandardCursor(StandardCursorShape.VResize, CursorShape.VResize);
+                AddStandardCursor(StandardCursorShape.Progress, CursorShape.Arrow);
+                AddStandardCursor(StandardCursorShape.NWSEResize, CursorShape.Crosshair);
+                AddStandardCursor(StandardCursorShape.NESWResize, CursorShape.Crosshair);
+                AddStandardCursor(StandardCursorShape.Move, CursorShape.Crosshair);
+                AddStandardCursor(StandardCursorShape.NotAllowed, CursorShape.Arrow);
+                AddStandardCursor(StandardCursorShape.NWResize, CursorShape.Crosshair);
+                AddStandardCursor(StandardCursorShape.NResize, CursorShape.VResize);
+                AddStandardCursor(StandardCursorShape.NEResize, CursorShape.Crosshair);
+                AddStandardCursor(StandardCursorShape.EResize, CursorShape.HResize);
+                AddStandardCursor(StandardCursorShape.SEResize, CursorShape.Crosshair);
+                AddStandardCursor(StandardCursorShape.SResize, CursorShape.VResize);
+                AddStandardCursor(StandardCursorShape.SWResize, CursorShape.Crosshair);
+                AddStandardCursor(StandardCursorShape.WResize, CursorShape.HResize);
             }
 
             private sealed class CursorImpl : ICursor

Robust.Client/Graphics/Clyde/Windowing/SDL3-CS/LICENSE

@@ -1,25 +0,0 @@
-/* SDL3-CS - C# Bindings for SDL3
- *
- * Copyright (c) 2024 Colin Jackson
- *
- * This software is provided 'as-is', without any express or implied warranty.
- * In no event will the authors be held liable for any damages arising from
- * the use of this software.
- *
- * Permission is granted to anyone to use this software for any purpose,
- * including commercial applications, and to alter it and redistribute it
- * freely, subject to the following restrictions:
- *
- * 1. The origin of this software must not be misrepresented; you must not
- * claim that you wrote the original software. If you use this software in a
- * product, an acknowledgment in the product documentation would be
- * appreciated but is not required.
- *
- * 2. Altered source versions must be plainly marked as such, and must not be
- * misrepresented as being the original software.
- *
- * 3. This notice may not be removed or altered from any source distribution.
- *
- * Colin "cryy22" Jackson <c@cryy22.art>
- *
- */

Robust.Client/Graphics/Clyde/Windowing/SDL3-CS/SDL3.Core.Ext.cs

@@ -1,56 +0,0 @@
-using System;
-using System.Runtime.CompilerServices;
-using System.Runtime.InteropServices;
-
-namespace SDL3;
-
-public static partial class SDL
-{
-    // Extensions to SDL3-CS that aren't part of the main library.
-
-    [LibraryImport(nativeLibName)]
-    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
-    public static unsafe partial void SDL_SetLogOutputFunction(delegate* unmanaged[Cdecl] <void*, int, SDL_LogPriority, byte*, void> callback, void* userdata);
-
-    [LibraryImport(nativeLibName)]
-    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
-    public static unsafe partial SDLBool SDL_AddEventWatch(delegate* unmanaged[Cdecl] <void*, SDL_Event*, byte> filter, void* userdata);
-
-    [LibraryImport(nativeLibName)]
-    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
-    public static unsafe partial void SDL_RemoveEventWatch(delegate* unmanaged[Cdecl] <void*, SDL_Event*, byte> filter, void* userdata);
-
-    [LibraryImport(nativeLibName, StringMarshalling = StringMarshalling.Utf8)]
-    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
-    public static unsafe partial void SDL_ShowFileDialogWithProperties(int type, delegate* unmanaged[Cdecl]<void*, byte**, int, void> callback, void* userdata, uint properties);
-
-    [LibraryImport(nativeLibName, EntryPoint = "SDL_WaitEvent")]
-    [UnmanagedCallConv(CallConvs = [typeof(CallConvCdecl)])]
-    public static partial SDLBool SDL_WaitEventRef(ref SDL_Event @event);
-
-    public const byte SDL_BUTTON_LEFT = 1;
-    public const byte SDL_BUTTON_MIDDLE = 2;
-    public const byte SDL_BUTTON_RIGHT = 3;
-    public const byte SDL_BUTTON_X1 = 4;
-    public const byte SDL_BUTTON_X2 = 5;
-
-    public const int SDL_GL_CONTEXT_PROFILE_CORE = 0x0001;
-    public const int SDL_GL_CONTEXT_PROFILE_COMPATIBILITY = 0x0002;
-    public const int SDL_GL_CONTEXT_PROFILE_ES = 0x0004;
-
-    public const int SDL_GL_CONTEXT_DEBUG_FLAG = 0x0001;
-    public const int SDL_GL_CONTEXT_FORWARD_COMPATIBLE_FLAG = 0x0002;
-    public const int SDL_GL_CONTEXT_ROBUST_ACCESS_FLAG = 0x0004;
-    public const int SDL_GL_CONTEXT_RESET_ISOLATION_FLAG = 0x0008;
-
-    public const int SDL_FILEDIALOG_OPENFILE = 0;
-    public const int SDL_FILEDIALOG_SAVEFILE = 1;
-    public const int SDL_FILEDIALOG_OPENFOLDER = 2;
-
-    public const string SDL_PROP_FILE_DIALOG_NFILTERS_NUMBER = "SDL.filedialog.nfilters";
-    public const string SDL_PROP_FILE_DIALOG_FILTERS_POINTER = "SDL.filedialog.filters";
-
-    public static int SDL_VERSIONNUM_MAJOR(int version) => version / 1000000;
-    public static int SDL_VERSIONNUM_MINOR(int version) => version / 1000 % 1000;
-    public static int SDL_VERSIONNUM_MICRO(int version) => version % 1000;
-}

Robust.Client/Graphics/Clyde/Windowing/Sdl3.Cursor.cs

@@ -94,6 +94,19 @@ internal partial class Clyde
             Add(StandardCursorShape.Hand, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_POINTER);
             Add(StandardCursorShape.HResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_EW_RESIZE);
             Add(StandardCursorShape.VResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_NS_RESIZE);
+            Add(StandardCursorShape.Progress, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_PROGRESS);
+            Add(StandardCursorShape.NWSEResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_NWSE_RESIZE);
+            Add(StandardCursorShape.NESWResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_NESW_RESIZE);
+            Add(StandardCursorShape.Move, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_MOVE);
+            Add(StandardCursorShape.NotAllowed, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_NOT_ALLOWED);
+            Add(StandardCursorShape.NWResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_NW_RESIZE);
+            Add(StandardCursorShape.NResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_N_RESIZE);
+            Add(StandardCursorShape.NEResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_NE_RESIZE);
+            Add(StandardCursorShape.EResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_E_RESIZE);
+            Add(StandardCursorShape.SEResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_SE_RESIZE);
+            Add(StandardCursorShape.SResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_S_RESIZE);
+            Add(StandardCursorShape.SWResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_SW_RESIZE);
+            Add(StandardCursorShape.WResize, SDL.SDL_SystemCursor.SDL_SYSTEM_CURSOR_W_RESIZE);
 
             void Add(StandardCursorShape shape, SDL.SDL_SystemCursor sysCursor)
             {

Robust.Client/Graphics/Clyde/Windowing/Sdl3.Event.cs

@@ -81,6 +81,11 @@ internal partial class Clyde
                 case EventQuit:
                     ProcessEventQuit();
                     break;
+#if MACOS
+                case EventWindowDestroyed:
+                    ProcessEventWindowDestroyed();
+                    break;
+#endif
                 default:
                     _sawmill.Error($"Unknown SDL3 event type: {evb.GetType().Name}");
                     break;
@@ -255,5 +260,15 @@ internal partial class Clyde
         {
             _clyde.SendInputModeChanged();
         }
+
+#if MACOS
+        private void ProcessEventWindowDestroyed()
+        {
+            // For some reason, on macOS, closing a secondary window
+            // causes the GL context on the primary thread to crap itself.
+            // Rebinding it seems to fix it.
+            GLMakeContextCurrent(_clyde._mainWindow);
+        }
+#endif
     }
 }

Robust.Client/Graphics/Clyde/Windowing/Sdl3.FileDialog.cs

@@ -46,6 +46,10 @@ internal partial class Clyde
                 }
             }
 
+            // NOTE: Giving a parent window is required to avoid the file dialog being blocking on macOS.
+            var mainWindow = (Sdl3WindowReg)_clyde._mainWindow!;
+            SDL.SDL_SetPointerProperty(props, SDL.SDL_PROP_FILE_DIALOG_WINDOW_POINTER, mainWindow.Sdl3Window);
+
             var task = ShowFileDialogWithProperties(type, props);
 
             SDL.SDL_DestroyProperties(props);

Robust.Client/Graphics/Clyde/Windowing/Sdl3.RawEvent.cs

@@ -278,5 +278,9 @@ internal partial class Clyde
         private sealed class EventKeyMapChanged : EventBase;
 
         private sealed class EventQuit : EventBase;
+
+#if MACOS
+        private sealed class EventWindowDestroyed : EventBase;
+#endif
     }
 }

Robust.Client/Graphics/Clyde/Windowing/Sdl3.Window.cs

@@ -7,8 +7,10 @@ using Robust.Shared.Maths;
 using SDL3;
 using TerraFX.Interop.Windows;
 using TerraFX.Interop.Xlib;
+#if WINDOWS
 using BOOL = TerraFX.Interop.Windows.BOOL;
 using Windows = TerraFX.Interop.Windows.Windows;
+#endif
 using GLAttr = SDL3.SDL.SDL_GLAttr;
 using X11Window = TerraFX.Interop.Xlib.Window;
 
@@ -142,9 +144,12 @@ internal partial class Clyde
             });
         }
 
-        private static void WinThreadWinDestroy(CmdWinDestroy cmd)
+        private void WinThreadWinDestroy(CmdWinDestroy cmd)
         {
             SDL.SDL_DestroyWindow(cmd.Window);
+#if MACOS
+            SendEvent(new EventWindowDestroyed());
+#endif
         }
 
         private (nint window, nint context) CreateSdl3WindowForRenderer(
@@ -461,6 +466,7 @@ internal partial class Clyde
             var reg = (Sdl3WindowReg)window;
             var windowPtr = WinPtr(reg);
 
+#if WINDOWS
             // On Windows, SwapBuffers does not correctly sync to the DWM compositor.
             // This means OpenGL vsync is effectively broken by default on Windows.
             // We manually sync via DwmFlush(). GLFW does this automatically, SDL3 does not.
@@ -473,7 +479,7 @@ internal partial class Clyde
             var dwmFlush = false;
             var swapInterval = 0;
 
-            if (OperatingSystem.IsWindows() && !reg.Fullscreen && reg.SwapInterval > 0)
+            if (!reg.Fullscreen && reg.SwapInterval > 0)
             {
                 BOOL compositing;
                 // 6.2 is Windows 8
@@ -492,9 +498,12 @@ internal partial class Clyde
                     swapInterval = reg.SwapInterval;
                 }
             }
+#endif
 
+            //_sawmill.Debug($"Swapping: {window.Id} @ {_clyde._gameTiming.CurFrame}");
             SDL.SDL_GL_SwapWindow(windowPtr);
 
+#if WINDOWS
             if (dwmFlush)
             {
                 var i = swapInterval;
@@ -505,6 +514,7 @@ internal partial class Clyde
 
                 SDL.SDL_GL_SetSwapInterval(swapInterval);
             }
+#endif
         }
 
         public uint? WindowGetX11Id(WindowReg window)
@@ -547,17 +557,18 @@ internal partial class Clyde
 
         public void TextInputSetRect(WindowReg reg, UIBox2i rect, int cursor)
         {
+            var ratio = ((Sdl3WindowReg)reg).PixelRatio;
             SendCmd(new CmdTextInputSetRect
             {
                 Window = WinPtr(reg),
                 Rect = new SDL.SDL_Rect
                 {
-                    x = rect.Left,
-                    y = rect.Top,
-                    w = rect.Width,
-                    h = rect.Height
+                    x = (int)(rect.Left / ratio.X),
+                    y = (int)(rect.Top / ratio.Y),
+                    w = (int)(rect.Width / ratio.X),
+                    h = (int)(rect.Height / ratio.Y)
                 },
-                Cursor = cursor
+                Cursor = (int)(cursor / ratio.X)
             });
         }
 

Robust.Client/Graphics/Clyde/Windowing/Sdl3.cs

@@ -61,6 +61,10 @@ internal partial class Clyde
             // https://github.com/libsdl-org/SDL/issues/11813
             SDL.SDL_SetHint(SDL.SDL_HINT_WINDOWS_GAMEINPUT, "0");
 
+#if MACOS
+            SDL.SDL_SetHint(SDL.SDL_HINT_MAC_OPENGL_ASYNC_DISPATCH, "1");
+#endif
+
             var res = SDL.SDL_Init(SDL.SDL_InitFlags.SDL_INIT_VIDEO | SDL.SDL_InitFlags.SDL_INIT_EVENTS);
             if (!res)
             {

Robust.Client/Graphics/IClydeInternal.cs

@@ -55,6 +55,7 @@ namespace Robust.Client.Graphics
 
         Texture GetStockTexture(ClydeStockTexture stockTexture);
         IEnumerable<(Clyde.Clyde.ClydeTexture, Clyde.Clyde.LoadedTexture)> GetLoadedTextures();
+        IEnumerable<(Clyde.Clyde.RenderTargetBase, Clyde.Clyde.LoadedRenderTarget)> GetLoadedRenderTextures();
 
         ClydeDebugLayers DebugLayers { get; set; }
 
@@ -72,5 +73,20 @@ namespace Robust.Client.Graphics
         void RunOnWindowThread(Action action);
 
         IFileDialogManagerImplementation? FileDialogImpl { get; }
+
+        bool VsyncEnabled { get; set; }
+
+        // Viewports
+
+#if TOOLS
+
+        /// <summary>
+        /// Fires <see cref="IClydeViewport.ClearCachedResources"/> on all viewports. For debugging.
+        /// </summary>
+        void ViewportsClearAllCached();
+
+#endif // TOOLS
+
+        void RenderNow(IRenderTarget renderTarget, Action<IRenderHandle> callback);
     }
 }

Robust.Client/Graphics/IClydeViewport.cs

@@ -13,6 +13,11 @@ namespace Robust.Client.Graphics
     /// </summary>
     public interface IClydeViewport : IDisposable
     {
+        /// <summary>
+        /// A unique ID for this viewport. No other viewport with this ID can ever exist in the app lifetime.
+        /// </summary>
+        long Id { get; }
+
         /// <summary>
         ///     The render target that is rendered to when rendering this viewport.
         /// </summary>
@@ -22,6 +27,16 @@ namespace Robust.Client.Graphics
         IEye? Eye { get; set; }
         Vector2i Size { get; }
 
+        /// <summary>
+        /// Raised when the viewport indicates that any cached rendering resources (e.g. render targets)
+        /// should be purged.
+        /// </summary>
+        /// <remarks>
+        /// This event is raised if the viewport is disposed (manually or via finalization).
+        /// However, code should expect this event to be raised at any time, even if the viewport is not disposed fully.
+        /// </remarks>
+        event Action<ClearCachedViewportResourcesEvent> ClearCachedResources;
+
         /// <summary>
         /// Color to clear the render target to before rendering. If null, no clearing will happen.
         /// </summary>
@@ -85,4 +100,23 @@ namespace Robust.Client.Graphics
             IViewportControl control,
             in UIBox2i viewportBounds);
     }
+
+    public struct ClearCachedViewportResourcesEvent
+    {
+        /// <summary>
+        /// The <see cref="IClydeViewport.Id"/> of the viewport.
+        /// </summary>
+        public readonly long ViewportId;
+
+        /// <summary>
+        /// The viewport itself. This is not available if the viewport was disposed.
+        /// </summary>
+        public readonly IClydeViewport? Viewport;
+
+        internal ClearCachedViewportResourcesEvent(long viewportId, IClydeViewport? viewport)
+        {
+            ViewportId = viewportId;
+            Viewport = viewport;
+        }
+    }
 }

Robust.Client/Graphics/Shaders/ShaderInstance.cs

@@ -4,8 +4,6 @@ using Robust.Shared.Graphics;
 using Robust.Shared.Maths;
 using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.ViewVariables;
-using Vector3 = Robust.Shared.Maths.Vector3;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Graphics
 {
@@ -169,7 +167,7 @@ namespace Robust.Client.Graphics
             SetParameterImpl(name, value);
         }
 
-        public void SetParameter(string name, in Matrix4 value)
+        public void SetParameter(string name, in Matrix4x4 value)
         {
             EnsureAlive();
             EnsureMutable();
@@ -236,7 +234,7 @@ namespace Robust.Client.Graphics
         private protected abstract void SetParameterImpl(string name, bool value);
         private protected abstract void SetParameterImpl(string name, bool[] value);
         private protected abstract void SetParameterImpl(string name, in Matrix3x2 value);
-        private protected abstract void SetParameterImpl(string name, in Matrix4 value);
+        private protected abstract void SetParameterImpl(string name, in Matrix4x4 value);
         private protected abstract void SetParameterImpl(string name, Texture value);
         private protected abstract void SetStencilImpl(StencilParameters value);
     }

Robust.Client/Graphics/Shaders/ShaderPrototype.cs

@@ -11,8 +11,6 @@ using Robust.Shared.Serialization.Manager.Attributes;
 using Robust.Shared.Utility;
 using Robust.Shared.ViewVariables;
 using YamlDotNet.RepresentationModel;
-using Vector3 = Robust.Shared.Maths.Vector3;
-using Vector4 = Robust.Shared.Maths.Vector4;
 
 namespace Robust.Client.Graphics
 {
@@ -222,7 +220,7 @@ namespace Robust.Client.Graphics
                     case Matrix3x2 i:
                         instance.SetParameter(key, i);
                         break;
-                    case Matrix4 i:
+                    case Matrix4x4 i:
                         instance.SetParameter(key, i);
                         break;
                 }