Version: 210.1.2

(cherry picked from commit 859f150404)

.editorconfig

@@ -10,5 +10,8 @@ charset = utf-8
 [*.{csproj,xml,yml,dll.config,targets,props}]
 indent_size = 2
 
+[nuget.config]
+indent_size = 2
+
 [*.gdsl]
 indent_style = tab

Directory.Packages.props

@@ -0,0 +1,61 @@
+<Project>
+  <ItemGroup>
+    <PackageVersion Include="BenchmarkDotNet" Version="0.13.12" />
+    <PackageVersion Include="DiscordRichPresence" Version="1.2.1.24" />
+    <PackageVersion Include="ILReader.Core" Version="1.0.0.4" />
+    <PackageVersion Include="JetBrains.Annotations" Version="2023.3.0" />
+    <PackageVersion Include="JetBrains.Profiler.Api" Version="1.4.0" />
+    <PackageVersion Include="Linguini.Bundle" Version="0.1.3" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.4" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Analyzer.Testing" Version="1.1.1"/>
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.NUnit" Version="1.1.1"/>
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="4.8.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Features" Version="4.8.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="4.8.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.8.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Common" Version="4.8.0" />
+    <PackageVersion Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.8.0" />
+    <PackageVersion Include="Microsoft.CodeCoverage" Version="17.8.0" />
+    <PackageVersion Include="Microsoft.Data.Sqlite.Core" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.DotNet.RemoteExecutor" Version="8.0.0-beta.24059.4" />
+    <PackageVersion Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.Logging" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.ObjectPool" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.Extensions.Primitives" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.ILVerification" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.IO.RecyclableMemoryStream" Version="3.0.0" />
+    <PackageVersion Include="Microsoft.NET.ILLink.Tasks" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageVersion Include="Microsoft.Win32.Registry" Version="5.0.0" />
+    <PackageVersion Include="Moq" Version="4.20.70" />
+    <PackageVersion Include="NUnit" Version="4.0.1" />
+    <PackageVersion Include="NUnit.Analyzers" Version="3.10.0" />
+    <PackageVersion Include="NUnit3TestAdapter" Version="4.5.0" />
+    <PackageVersion Include="Nett" Version="0.15.0" />
+    <PackageVersion Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.4" />
+    <PackageVersion Include="OpenTK.OpenAL" Version="4.7.7" />
+    <PackageVersion Include="OpenToolkit.Graphics" Version="4.0.0-pre9.1" />
+    <PackageVersion Include="Pidgin" Version="3.2.2" />
+    <PackageVersion Include="Robust.Natives" Version="0.1.1" />
+    <PackageVersion Include="Robust.Natives.Cef" Version="120.1.9" />
+    <PackageVersion Include="Robust.Shared.AuthLib" Version="0.1.2" />
+    <PackageVersion Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.1.7" />
+    <PackageVersion Include="SQLitePCLRaw.provider.sqlite3" Version="2.1.7" />
+    <PackageVersion Include="Serilog" Version="3.1.1" />
+    <PackageVersion Include="Serilog.Sinks.Loki" Version="4.0.0-beta3" />
+    <PackageVersion Include="SharpZstd.Interop" Version="1.5.2-beta2" />
+    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.3" />
+    <PackageVersion Include="SpaceWizards.HttpListener" Version="0.1.0" />
+    <PackageVersion Include="SpaceWizards.NFluidsynth" Version="0.1.1" />
+    <PackageVersion Include="SpaceWizards.SharpFont" Version="1.0.2" />
+    <PackageVersion Include="SpaceWizards.Sodium" Version="0.2.1" />
+    <PackageVersion Include="System.Numerics.Vectors" Version="4.5.0" />
+    <PackageVersion Include="TerraFX.Interop.Windows" Version="10.0.22621.5" />
+    <PackageVersion Include="TerraFX.Interop.Xlib" Version="6.4.0" />
+    <PackageVersion Include="VorbisPizza" Version="1.3.0" />
+    <PackageVersion Include="YamlDotNet" Version="13.7.1" />
+    <PackageVersion Include="prometheus-net" Version="8.2.1" />
+    <PackageVersion Include="prometheus-net.DotNetRuntime" Version="4.4.0" />
+  </ItemGroup>
+</Project>

Lidgren.Network/CursedHorrorsBeyondOurWildestImagination.cs

@@ -0,0 +1,9 @@
+using System.Runtime.CompilerServices;
+
+// So I wanted to mess with NetIncomingMessage and NetOutgoingMessage from tests.
+// Now.. the instructors are internal...
+// Unless...
+// I mean we have this project here from the weird way we're compiling Lidgren.
+// I could just put this in here... it wouldn't touch the main Lidgren repo at all...
+[assembly: InternalsVisibleTo("Robust.UnitTesting")]
+

Lidgren.Network/Lidgren.Network.csproj

@@ -16,6 +16,8 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <Compile Include="CursedHorrorsBeyondOurWildestImagination.cs" />
+
     <Compile Include="Lidgren.Network\Lidgren.Network\**\*.cs">
      <Link>%(RecursiveDir)%(Filename)%(Extension)</Link>
     </Compile>

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/Robust.Properties.targets

@@ -4,6 +4,7 @@
 
   <PropertyGroup>
     <TargetFramework>net8.0</TargetFramework>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
 
   <Import Project="Robust.Custom.targets" Condition="Exists('Robust.Custom.targets')"/>
@@ -27,5 +28,5 @@
   <Import Project="Robust.Analyzers.targets" Condition="'$(SkipRobustAnalyzer)' != 'true'" />
 
   <!-- serialization generator -->
-  <Import Project="Robust.Serialization.Generator.targets" />
+  <Import Project="Robust.Serialization.Generator.targets" Condition="'$(SkipRobustAnalyzer)' != 'true'" />
 </Project>

RELEASE-NOTES.md

@@ -54,6 +54,309 @@ END TEMPLATE-->
 *None yet*
 
 
+## 210.1.2
+
+
+## 210.1.1
+
+### Bugfixes
+
+* Fixed multiple recent bugs with key binding storage.
+
+### Other
+
+* Change default of `ButtonGroup.IsNoneSetAllowed` to `true`. This makes it default again to the previous (unintentional) behavior.
+
+
+## 210.1.0
+
+### New features
+
+* `NetUserId` implements `ISelfSerialize` so can be used in data fields.
+* `ButtonGroup.IsNoneSetAllowed` to allow a button group to have no buttons pressed by default.
+
+
+## 210.0.3
+
+
+## 210.0.2
+
+### Bugfixes
+
+* Revert changes to `TextureRect` too.
+
+
+## 210.0.1
+
+### Bugfixes
+
+* Revert changes to `TextureButton` that broke style property handling.
+
+
+## 210.0.0
+
+### New features
+
+* Controls can now hook before, after, and during rendering of their children.
+* IRenderHandle is now a public API, with the caveat that it's properties and methods are unstable.
+* ButtonGroup now exposes what buttons it contains, alongside which is currently pressed.
+* OptionButton has additional styleclasses, and has a hook for modifying it's internal buttons.
+* PanelContainer.GetStyleBox() is now protected rather than private.
+* TextureButton now uses a TextureRect instead of custom drawing code.
+* TextureRect has additional style properties exposed.
+    * A new property, TextureSizeTarget, was added, which allows specifying a size in virtual pixels that the control should attempt to draw at.
+    * Stretch mode is now a style property.
+    * Scale is now a style property.
+* Avalonia.Metadata.XmlnsDefinitionAttribute is now permitted by the sandbox.
+* Add MaxDimension property to Box2 to return the higher of the Width or Height.
+* Add GetLocalPosition to convert ScreenCoordinates to coordinates relative to the control. Ignores window.
+* Add GlobalRect and GlobalPixelRect for controls to get their UIBox2i in screen terms.
+* Add dotted line drawing to DrawingHandleScreen.
+* You can use `Subs.CVar()` from an entity systems to subscribe to CVar changes. This is more convenient than `IConfigurationManager.OnValueChanged` as it automatically unsubscribes on system shutdown.
+* There is now a built-in type serializer for `DateTime`, so you can put `DateTime`s in your data fields.
+* `System.Text.Unicode.UnicodeRange` and `UnicodeRanges` are now available in the sandbox.
+
+### Bugfixes
+
+* UI drawing now properly accounts for a control's draw routine potentially mangling the current matrix.
+* UI roots now properly update when the global stylesheet is changed. They previously only did so if they had a dedicated stylesheet (which is the one case where they would be unaffected by a global sheet update.
+
+
+## 209.0.1
+
+### Bugfixes
+
+* Fix missed import from 209.0.0.
+
+
+## 209.0.0
+
+### Breaking changes
+
+* `replay.max_compressed_size` and `replay.max_uncompressed_size` CVars are now `long`.
+* Remove obsolete CoordinatesExtension for ToEntityCoordinates from GridUid / Vector2i.
+
+### New features
+
+* Add GetEntitiesOnMap / GetChildEntities to EntityLookupSystem to return components on the specified map and components with the specified parent respectively.
+* Add MaxDimension property to Box2 to return the higher of the Width or Height.
+* Add GetLocalPosition to convert ScreenCoordinates to coordinates relative to the control. Ignores window.
+* Add GlobalRect and GlobalPixelRect for controls to get their UIBox2i in screen terms.
+* Add dotted line drawing to DrawingHandleScreen.
+* `IConfigurationManager.LoadDefaultsFromTomlStream` properly does type conversions. This fixes scenarios like loading of `long` CVars.
+* Add helper methods for TileRef / Vector2i to SharedMapSystem for ToCenterCoordinates (tile center EntityCoordinates) and ToCoordinates (tile origin to EntityCoordinates).
+* Copy some of the coordinates extensions to SharedTransformSystem.
+
+### Bugfixes
+
+* Fixed integer overflows in replay max size calculation.
+* Explicitly capped `replay.replay_tick_batchSize` internally to avoid high values causing allocation failures.
+
+### Other
+
+* Important MIDI performance improvements.
+
+
+## 208.0.0
+
+### Breaking changes
+
+* Metadata flags are no longer serialized as they get rebuilt on entity startup.
+
+### Bugfixes
+
+* Log failing to load user keybinds and handle the exception.
+
+
+## 207.1.0
+
+### New features
+
+* Add the ability to merge grids via GridFixtureSystem.
+
+
+## 207.0.0
+
+### Breaking changes
+
+* Update EntityLookup internally so non-approximate queries use the GJK solver and are much more accurate. This also means the approximate flag matters much more if you don't need narrowphase checks.
+* Add shape versions of queries for both EntityLookup and MapManager.
+
+### Bugfixes
+
+* Fix PVS full state updates not clearing session entities and causing exceptions.
+
+### Other
+
+* Integration tests now run `NetMessage`s through serialization rather than passing the objects between client and server. This causes tests that missed `[NetSerializer]` attributes on any objects that need them to fail.
+
+### Internal
+
+* Remove a lot of duplicate code internally from EntityLookup and MapManager.
+
+
+## 206.0.0
+
+### Breaking changes
+
+* tpto will teleport you to physics-center instead of transform center instead.
+* Rename local EntityLookup methods to reflect they take local AABBs and not world AABBs.
+
+### New features
+
+* Add some additional EntityLookup methods for local queries.
+* Add support to PrototypeManager for parsing specific files / directories as abstract.
+
+### Bugfixes
+
+* Fix tpto short-circuiting if one of the listed entities isn't found.
+* Fix tpto not allowing grids as targets.
+
+### Other
+
+* Reduce MIDI source update rate from 10hz to 4hz.
+
+### Internal
+
+* Remove some duplicate internal code in EntityLookupSystem.
+* Skip serialization sourcegen in GLFW and Lidgren.
+
+
+## 205.0.0
+
+### Breaking changes
+
+* The unused `Robust.Physics` project has been deleted.
+* The project now uses [Central Package Management](https://learn.microsoft.com/en-us/nuget/consume-packages/central-package-management).
+* (Almost) all the NuGet packages have been updated. This causes many problems. I am so sorry.
+* Cleaned up some unused packages as well.
+
+
+## 204.1.0
+
+### New features
+
+* New `EntitySystem` subscription helper for working with Bound User Interface events. You can find them by doing `Subs.BuiEvents<>()` in a system.
+* The `EntityManager.Subscriptions` type (for building helper extension methods) now uses
+
+### Bugfixes
+
+* Avoid loading assemblies from content `/Assemblies` if Robust ships its own copy. This avoid duplicate or weird mismatching version issues.
+
+### Other
+
+* Removed glibc version check warning.
+
+
+## 204.0.0
+
+### Breaking changes
+
+* Make EntityManager abstract and make IEntityManager.EntityNetManager not nullable.
+* Make VVAccess.ReadWrite default for all Datafields instead of VVAccess.ReadOnly
+
+### New features
+
+* `TextEdit.OnTextChanged`
+* Add Pick and PickAndTake versions for System.Random for ICollections.
+
+### Bugfixes
+
+* Fix `IClipboardManager.GetText()` returning null in some cases.
+* Fix possible NRE in server-side console command completion code.
+* Fix possible NRE on DebugConsole logs.
+* Fix exception when VVing non-networked components.
+
+### Other
+
+* Remove "Do not use from content" from IComponent.
+
+
+## 203.0.0
+
+### Breaking changes
+
+* `IComponentFactory.RegisterIgnore()` no longer supports overwriting existing registrations, components should get ignored before they are registered.
+* Event bus subscriptions are now locked after `IEntityManager` has started, instead of after the first component gets added. Any event subscriptions now need to happen before startup (but after init).
+* Event bus subscriptions must now be locked before raising any events.
+* Delete FodyWeavers.xsd as it hasn't been used for a long time.
+* Remove physics sleep cancelling as it was, in hindsight, a bad idea.
+
+### New features
+
+* `RobustUnitTest` now has a `ExtraComponents` field for automatically registering additional components.
+* `IComponentFactory.RegisterIgnore()` now accepts more than one string.
+* Added `IComponentFactory.RegisterTypes` for simultaneously registering multiple components.
+
+### Bugfixes
+
+* Clamp volume calculations for audio rather than throwing.
+
+
+## 202.1.1
+
+### Bugfixes
+
+* Reverted some map/grid initialisation changes that might've been causing broadphase/physics errors.
+* Fixed PVS sometimes sending entities without first sending their children.
+* Fixed a container state handling bug caused by containers not removing expected entities when shutting down.
+* Fixed a `EnsureEntity<T>` state handling bug caused by improper handling of entity deletions.
+* Fixed a bad NetSyncEnabled debug assert.
+
+
+## 202.1.0
+
+### New features
+
+* Add GetLocalEntitiesIntersecting overload that takes in a griduid and a Vector2i tile.
+
+
+## 202.0.0
+
+### Breaking changes
+
+* Various entity manager methods now have a new `where T : IComponent` constraint.
+* The `IComponentFactory.ComponentAdded` event has been renamed to `ComponentsAdded` and now provides an array of component registrations.
+* `IComponentFactory.RegisterIgnore()` no longer supports overwriting existing registrations, components should get ignored before they are registered.
+
+### New features
+
+* Added `IComponentFactory.GetAllRegistrations()`
+* Add IComponentState interface support for component states so structs can be used in lieu of classes.
+
+
+## 201.0.0
+
+### Breaking changes
+
+* The `zCircleGradient` shader function arguments have changed. It now requires a pixel-size to ensure that the gradient is properly entered.
+
+### Bugfixes
+
+* Fixed some PVS null reference errors.
+
+
+## 200.0.0
+
+### Breaking changes
+
+* MappingDataNode is now ordered.
+* Make invalid AutoNetworkedFields compiler errors.
+
+### New features
+
+* `OSWindowStyles.NoTitleBar` (supported only on Linux X11 for now).
+
+### Bugfixes
+
+* Avoid calling DirtyEntity when a component's last modified tick is not current.
+* Fix `tpgrid` allowing moving grids to nullspace.
+
+### Other
+
+* `OSWindowStyles.NoTitleOptions` is now supported on Linux X11.
+
+
 ## 199.0.0
 
 ### Breaking changes

Resources/Locale/en-US/commands.ftl

@@ -9,6 +9,7 @@ cmd-parse-failure-float = {$arg} is not a valid float.
 cmd-parse-failure-bool = {$arg} is not a valid bool.
 cmd-parse-failure-uid = {$arg} is not a valid entity UID.
 cmd-parse-failure-mapid = {$arg} is not a valid MapId.
+cmd-parse-failure-grid = {$arg} is not a valid grid.
 cmd-parse-failure-entity-exist = UID {$arg} does not correspond to an existing entity.
 
 cmd-error-file-not-found = Could not find file: {$file}.

Resources/Locale/en-US/physics/grid_merging.ftl

@@ -0,0 +1,8 @@
+cmd-merge_grids-desc = Combines 2 grids into 1 grid
+cmd-merge_grids-help = merge_grids <gridUid1> <gridUid2> <offsetX> <offsetY> [angle]
+
+cmd-merge_grids-hintA = Grid A
+cmd-merge_grids-hintB = Grid B
+cmd-merge_grids-xOffset = X offset
+cmd-merge_grids-yOffset = Y offset
+cmd-merge_grids-angle = [Angle]

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

@@ -1,23 +1,26 @@
 <Project Sdk="Microsoft.NET.Sdk">
-  <Import Project="..\MSBuild\Robust.Properties.targets" />
-  <Import Project="..\MSBuild\Robust.Engine.props" />
-  
+  <Import Project="..\MSBuild\Robust.Properties.targets"/>
+  <Import Project="..\MSBuild\Robust.Engine.props"/>
+
   <PropertyGroup>
     <IsPackable>false</IsPackable>
   </PropertyGroup>
-  
+
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.Analyzer.Testing" Version="1.1.1"/>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1"/>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.NUnit" Version="1.1.1"/>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.0.1"/>
-    <PackageReference Include="NUnit" Version="3.13.2"/>
-    <PackageReference Include="NUnit.ConsoleRunner" Version="3.15.0"/>
-    <PackageReference Include="NUnit3TestAdapter" Version="4.2.1"/>
-    <PackageReference Include="NUnit.Analyzers" Version="3.3.0"/>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.2.0" />
+    <PackageVersion Update="NUnit" Version="3.14.0" />
   </ItemGroup>
-  
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.CodeAnalysis.Analyzer.Testing"/>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp"/>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing.NUnit"/>
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces"/>
+    <PackageReference Include="NUnit"/>
+    <PackageReference Include="NUnit3TestAdapter"/>
+    <PackageReference Include="NUnit.Analyzers"/>
+    <PackageReference Include="Microsoft.NET.Test.Sdk"/>
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\Robust.Analyzers\Robust.Analyzers.csproj"/>
   </ItemGroup>

Robust.Analyzers/Robust.Analyzers.csproj

@@ -3,19 +3,20 @@
   <PropertyGroup>
     <TargetFramework>netstandard2.0</TargetFramework>
     <LangVersion>10</LangVersion>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.3" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.0.1" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" />
   </ItemGroup>
 
   <ItemGroup>
     <!-- Needed for NotNullableFlagAnalyzer. -->
     <Compile Include="..\Robust.Shared\Analyzers\NotNullableFlagAttribute.cs" />
   </ItemGroup>
-  
+
   <ItemGroup>
     <!-- Needed for FriendAnalyzer. -->
     <Compile Include="..\Robust.Shared\Analyzers\AccessAttribute.cs" />

Robust.Benchmarks/Configs/DefaultSQLConfig.cs

@@ -1,15 +1,18 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Globalization;
 using BenchmarkDotNet.Analysers;
 using BenchmarkDotNet.Columns;
 using BenchmarkDotNet.Configs;
 using BenchmarkDotNet.Diagnosers;
+using BenchmarkDotNet.EventProcessors;
 using BenchmarkDotNet.Exporters;
 using BenchmarkDotNet.Filters;
 using BenchmarkDotNet.Jobs;
 using BenchmarkDotNet.Loggers;
 using BenchmarkDotNet.Order;
 using BenchmarkDotNet.Reports;
+using BenchmarkDotNet.Running;
 using BenchmarkDotNet.Validators;
 using Robust.Benchmarks.Exporters;
 
@@ -44,10 +47,16 @@ public sealed class DefaultSQLConfig : IConfig
 
     public IEnumerable<BenchmarkLogicalGroupRule> GetLogicalGroupRules() => DefaultConfig.Instance.GetLogicalGroupRules();
 
+    public IEnumerable<EventProcessor> GetEventProcessors() => DefaultConfig.Instance.GetEventProcessors();
+
+    public IEnumerable<IColumnHidingRule> GetColumnHidingRules() => DefaultConfig.Instance.GetColumnHidingRules();
     public IOrderer Orderer => DefaultConfig.Instance.Orderer!;
+    public ICategoryDiscoverer? CategoryDiscoverer => DefaultConfig.Instance.CategoryDiscoverer;
     public SummaryStyle SummaryStyle => DefaultConfig.Instance.SummaryStyle;
     public ConfigUnionRule UnionRule => DefaultConfig.Instance.UnionRule;
     public string ArtifactsPath => DefaultConfig.Instance.ArtifactsPath;
     public CultureInfo CultureInfo => DefaultConfig.Instance.CultureInfo!;
     public ConfigOptions Options => DefaultConfig.Instance.Options;
+    public TimeSpan BuildTimeout => DefaultConfig.Instance.BuildTimeout;
+    public IReadOnlyList<Conclusion> ConfigAnalysisConclusion => DefaultConfig.Instance.ConfigAnalysisConclusion;
 }

Robust.Benchmarks/Robust.Benchmarks.csproj

@@ -13,12 +13,12 @@
     <ProjectReference Include="..\Robust.UnitTesting\Robust.UnitTesting.csproj" />
   </ItemGroup>
   <ItemGroup>
-    <PackageReference Include="BenchmarkDotNet" Version="0.12.1" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="6.0.0">
+    <PackageReference Include="BenchmarkDotNet" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="6.0.4" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" />
   </ItemGroup>
 
   <Import Project="..\MSBuild\Robust.Properties.targets" />

Robust.Client.Injectors/Robust.Client.Injectors.csproj

@@ -6,8 +6,8 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.Build.Framework" Version="17.0.0" />
-      <PackageReference Include="Mono.Cecil" Version="0.11.3" />
+      <PackageReference Include="Microsoft.Build.Framework" Version="17.8.3" />
+      <PackageReference Include="Mono.Cecil" Version="0.11.5" />
       <PackageReference Include="Pidgin" Version="2.5.0" />
     </ItemGroup>
 

Robust.Client.NameGenerator/Robust.Client.NameGenerator.csproj

@@ -2,11 +2,12 @@
 
     <PropertyGroup>
         <TargetFramework>netstandard2.0</TargetFramework>
+      <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
     </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.0.1" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" Version="3.3.3" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Analyzers" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>

Robust.Client.WebView/Robust.Client.WebView.csproj

@@ -8,8 +8,8 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="JetBrains.Annotations" Version="2020.3.0" />
-    <PackageReference Include="Robust.Natives.Cef" Version="120.1.9" />
+    <PackageReference Include="JetBrains.Annotations" />
+    <PackageReference Include="Robust.Natives.Cef" />
   </ItemGroup>
 
   <ItemGroup>

Robust.Client/Audio/AudioOverlay.cs

@@ -39,7 +39,7 @@ public sealed class AudioOverlay : Overlay
 
     protected internal override void Draw(in OverlayDrawArgs args)
     {
-        var localPlayer = _playerManager.LocalPlayer?.ControlledEntity;
+        var localPlayer = _playerManager.LocalEntity;
 
         if (args.ViewportControl == null || localPlayer == null)
             return;

Robust.Client/Audio/AudioSystem.cs

@@ -106,8 +106,8 @@ public sealed partial class AudioSystem : SharedAudioSystem
         SubscribeNetworkEvent<PlayAudioEntityMessage>(OnEntityAudio);
         SubscribeNetworkEvent<PlayAudioPositionalMessage>(OnEntityCoordinates);
 
-        CfgManager.OnValueChanged(CVars.AudioAttenuation, OnAudioAttenuation, true);
-        CfgManager.OnValueChanged(CVars.AudioRaycastLength, OnRaycastLengthChanged, true);
+        Subs.CVar(CfgManager, CVars.AudioAttenuation, OnAudioAttenuation, true);
+        Subs.CVar(CfgManager, CVars.AudioRaycastLength, OnRaycastLengthChanged, true);
     }
 
     private void OnAudioState(EntityUid uid, AudioComponent component, ref AfterAutoHandleStateEvent args)
@@ -133,13 +133,6 @@ public sealed partial class AudioSystem : SharedAudioSystem
         _audio.SetMasterGain(value);
     }
 
-    public override void Shutdown()
-    {
-        CfgManager.UnsubValueChanged(CVars.AudioAttenuation, OnAudioAttenuation);
-        CfgManager.UnsubValueChanged(CVars.AudioRaycastLength, OnRaycastLengthChanged);
-        base.Shutdown();
-    }
-
     private void OnAudioPaused(EntityUid uid, AudioComponent component, ref EntityPausedEvent args)
     {
         component.Pause();

Robust.Client/Audio/Midi/MidiManager.cs

@@ -72,7 +72,7 @@ internal sealed partial class MidiManager : IMidiManager
 
     // To avoid lock contention until some kind of MIDI refactor.
     private TimeSpan _nextUpdate;
-    private TimeSpan _updateFrequency = TimeSpan.FromSeconds(0.1f);
+    private TimeSpan _updateFrequency = TimeSpan.FromSeconds(0.25f);
 
     private SemaphoreSlim _updateSemaphore = new(1);
 
@@ -114,7 +114,7 @@ internal sealed partial class MidiManager : IMidiManager
         "/usr/share/sounds/sf2/TimGM6mb.sf2",
     };
 
-    private const string WindowsSoundfont = @"C:\WINDOWS\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";
@@ -192,7 +192,12 @@ internal sealed partial class MidiManager : IMidiManager
             _settings["synth.midi-bank-select"].StringValue = "gm";
             //_settings["synth.verbose"].IntValue = 1; // Useful for debugging.
 
-            _parallel.AddAndInvokeParallelCountChanged(UpdateParallelCount);
+            var midiParallel = _cfgMan.GetCVar(CVars.MidiParallelism);
+            _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($"Synth Cores: {_settings["synth.cpu-cores"].IntValue}");
+            _midiSawmill.Debug($"Synth Polyphony: {_settings["synth.polyphony"].IntValue}");
         }
         catch (Exception e)
         {
@@ -201,7 +206,10 @@ internal sealed partial class MidiManager : IMidiManager
             return;
         }
 
-        _midiThread = new Thread(ThreadUpdate);
+        _midiThread = new Thread(ThreadUpdate)
+        {
+            Name = "RobustToolbox MIDI Thread"
+        };
         _midiThread.Start();
 
         _updateJob = new MidiUpdateJob()
@@ -219,18 +227,6 @@ internal sealed partial class MidiManager : IMidiManager
         FluidsynthInitialized = true;
     }
 
-    private void UpdateParallelCount()
-    {
-        if (_settings == null)
-            return;
-
-        _settings["synth.polyphony"].IntValue = Math.Clamp(1024 + (int)(Math.Log2(_parallel.ParallelProcessCount) * 2048), 1, 65535);
-        _settings["synth.cpu-cores"].IntValue = Math.Clamp(_parallel.ParallelProcessCount, 1, 256);
-
-        _midiSawmill.Debug($"Synth Cores: {_settings["synth.cpu-cores"].IntValue}");
-        _midiSawmill.Debug($"Synth Polyphony: {_settings["synth.polyphony"].IntValue}");
-    }
-
     private void LoggerDelegate(NFluidsynth.Logger.LogLevel level, string message, IntPtr data)
     {
         var rLevel = level switch

Robust.Client/Audio/Midi/MidiRenderer.cs

@@ -38,6 +38,7 @@ internal sealed class MidiRenderer : IMidiRenderer
     private readonly Synth _synth;
     private readonly Sequencer _sequencer;
     private NFluidsynth.Player? _player;
+    private int _playerTotalTicks;
     private MidiDriver? _driver;
     private byte _midiProgram = 1;
     private byte _midiBank = 1;
@@ -144,7 +145,21 @@ internal sealed class MidiRenderer : IMidiRenderer
     public bool DisableProgramChangeEvent { get; set; } = true;
 
     [ViewVariables(VVAccess.ReadWrite)]
-    public int PlayerTotalTick => _player?.GetTotalTicks ?? 0;
+    public int PlayerTotalTick
+    {
+        get
+        {
+            // GetTotalTicks is really expensive (has to iterate the entire file, not cached).
+            // Slight problem with caching it ourselves: the value only becomes available when the player loads the MIDI file.
+            // And that only happens after playback really starts, with the timer and synth and all that stuff.
+            // So we cache it "as soon as it's available", i.e. not 0.
+            // We don't care about playlists and such, so it shouldn't change anymore after.
+            if (_playerTotalTicks != 0)
+                return _playerTotalTicks;
+
+            return _playerTotalTicks = _player?.GetTotalTicks ?? 0;
+        }
+    }
 
     [ViewVariables(VVAccess.ReadWrite)]
     public int PlayerTick
@@ -339,6 +354,7 @@ internal sealed class MidiRenderer : IMidiRenderer
                 return false;
             }
 
+            _playerTotalTicks = 0;
             _player?.Dispose();
             _player = new NFluidsynth.Player(_synth);
             _player.SetPlaybackCallback(MidiPlayerEventHandler);
@@ -377,6 +393,7 @@ internal sealed class MidiRenderer : IMidiRenderer
             _player?.Join();
             _player?.Dispose();
             _player = null;
+            _playerTotalTicks = 0;
         }
 
         StopAllNotes();

Robust.Client/BaseClient.cs

@@ -229,7 +229,7 @@ namespace Robust.Client
 
             // Don't invoke PlayerLeaveServer if PlayerJoinedServer & GameStartedSetup hasn't been called yet.
             if (RunLevel > ClientRunLevel.Connecting)
-                PlayerLeaveServer?.Invoke(this, new PlayerEventArgs(_playMan.LocalPlayer?.Session));
+                PlayerLeaveServer?.Invoke(this, new PlayerEventArgs(_playMan.LocalSession));
 
             LastDisconnectReason = args.Reason;
             GameStoppedReset();

Robust.Client/Console/ClientConsoleHost.cs

@@ -188,7 +188,7 @@ namespace Robust.Client.Console
             }
 
             args.RemoveAt(0);
-            var shell = new ConsoleShell(this, session ?? _player.LocalPlayer?.Session, session == null);
+            var shell = new ConsoleShell(this, session ?? _player.LocalSession, session == null);
             var cmdArgs = args.ToArray();
 
             AnyCommandExecuted?.Invoke(shell, commandName, command, cmdArgs);
@@ -200,8 +200,7 @@ namespace Robust.Client.Console
             // When not connected to a server, you can run all local commands.
             // When connected to a server, you can only run commands according to the con group controller.
 
-            return _player.LocalPlayer == null
-                   || _player.LocalPlayer.Session.Status <= SessionStatus.Connecting
+            return _player.LocalSession is not { Status: > SessionStatus.Connecting }
                    || _conGroup.CanCommand(cmdName);
         }
 

Robust.Client/Console/Commands/ClientSpawnCommand.cs

@@ -16,8 +16,7 @@ namespace Robust.Client.Console.Commands
 
         public override void Execute(IConsoleShell shell, string argStr, string[] args)
         {
-            var controlled = _playerManager.LocalPlayer?.ControlledEntity ?? EntityUid.Invalid;
-            if (controlled == EntityUid.Invalid)
+            if (_playerManager.LocalEntity is not { } controlled)
             {
                 shell.WriteLine("You don't have an attached entity.");
                 return;

Robust.Client/Console/Commands/ProfileEntitySpawningCommand.cs

@@ -43,6 +43,7 @@ public sealed class ProfileEntitySpawningCommand : IConsoleCommand
 
         GC.Collect();
 
+        Span<EntityUid> ents = stackalloc EntityUid[amount];
         var stopwatch = new Stopwatch();
         stopwatch.Start();
 
@@ -50,12 +51,17 @@ public sealed class ProfileEntitySpawningCommand : IConsoleCommand
 
         for (var i = 0; i < amount; i++)
         {
-            _entities.SpawnEntity(prototype, MapCoordinates.Nullspace);
+            ents[i] = _entities.SpawnEntity(prototype, MapCoordinates.Nullspace);
         }
 
         MeasureProfiler.SaveData();
 
         shell.WriteLine($"Client: Profiled spawning {amount} entities in {stopwatch.Elapsed.TotalMilliseconds:N3} ms");
+
+        foreach (var ent in ents)
+        {
+            _entities.DeleteEntity(ent);
+        }
     }
 }
 #endif

Robust.Client/Debugging/DebugPhysicsSystem.cs

@@ -420,7 +420,7 @@ namespace Robust.Client.Debugging
                 if (mapPos.MapId != args.MapId)
                     return;
 
-                var player = _playerManager.LocalPlayer?.ControlledEntity;
+                var player = _playerManager.LocalEntity;
 
                 if (!_entityManager.TryGetComponent<TransformComponent>(player, out var playerXform) ||
                     playerXform.MapID != args.MapId)

Robust.Client/FodyWeavers.xsd

@@ -1,82 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
-  <!-- This file was generated by Fody. Manual changes to this file will be lost when your project is rebuilt. -->
-  <xs:element name="Weavers">
-    <xs:complexType>
-      <xs:all>
-        <xs:element name="InlineIL" minOccurs="0" maxOccurs="1">
-          <xs:complexType>
-            <xs:attribute name="SequencePoints">
-              <xs:annotation>
-                <xs:documentation>Defines if sequence points should be generated for each emitted IL instruction. Default value: Debug</xs:documentation>
-              </xs:annotation>
-              <xs:simpleType>
-                <xs:restriction base="xs:string">
-                  <xs:enumeration value="Debug">
-                    <xs:annotation>
-                      <xs:documentation>Insert sequence points in Debug builds only (this is the default).</xs:documentation>
-                    </xs:annotation>
-                  </xs:enumeration>
-                  <xs:enumeration value="Release">
-                    <xs:annotation>
-                      <xs:documentation>Insert sequence points in Release builds only.</xs:documentation>
-                    </xs:annotation>
-                  </xs:enumeration>
-                  <xs:enumeration value="True">
-                    <xs:annotation>
-                      <xs:documentation>Always insert sequence points.</xs:documentation>
-                    </xs:annotation>
-                  </xs:enumeration>
-                  <xs:enumeration value="False">
-                    <xs:annotation>
-                      <xs:documentation>Never insert sequence points.</xs:documentation>
-                    </xs:annotation>
-                  </xs:enumeration>
-                </xs:restriction>
-              </xs:simpleType>
-            </xs:attribute>
-            <xs:attribute name="Warnings">
-              <xs:annotation>
-                <xs:documentation>Defines how warnings should be handled. Default value: Warnings</xs:documentation>
-              </xs:annotation>
-              <xs:simpleType>
-                <xs:restriction base="xs:string">
-                  <xs:enumeration value="Warnings">
-                    <xs:annotation>
-                      <xs:documentation>Emit build warnings (this is the default).</xs:documentation>
-                    </xs:annotation>
-                  </xs:enumeration>
-                  <xs:enumeration value="Ignore">
-                    <xs:annotation>
-                      <xs:documentation>Do not emit warnings.</xs:documentation>
-                    </xs:annotation>
-                  </xs:enumeration>
-                  <xs:enumeration value="Errors">
-                    <xs:annotation>
-                      <xs:documentation>Treat warnings as errors.</xs:documentation>
-                    </xs:annotation>
-                  </xs:enumeration>
-                </xs:restriction>
-              </xs:simpleType>
-            </xs:attribute>
-          </xs:complexType>
-        </xs:element>
-      </xs:all>
-      <xs:attribute name="VerifyAssembly" type="xs:boolean">
-        <xs:annotation>
-          <xs:documentation>'true' to run assembly verification (PEVerify) on the target assembly after all weavers have been executed.</xs:documentation>
-        </xs:annotation>
-      </xs:attribute>
-      <xs:attribute name="VerifyIgnoreCodes" type="xs:string">
-        <xs:annotation>
-          <xs:documentation>A comma-separated list of error codes that can be safely ignored in assembly verification.</xs:documentation>
-        </xs:annotation>
-      </xs:attribute>
-      <xs:attribute name="GenerateXsd" type="xs:boolean">
-        <xs:annotation>
-          <xs:documentation>'false' to turn off automatic generation of the XML Schema file.</xs:documentation>
-        </xs:annotation>
-      </xs:attribute>
-    </xs:complexType>
-  </xs:element>
-</xs:schema>

Robust.Client/GameController/GameController.Standalone.cs

@@ -35,8 +35,6 @@ namespace Robust.Client
                 throw new InvalidOperationException("Cannot start twice!");
             }
 
-            GlibcBug.Check();
-
             _hasStarted = true;
 
             if (CommandLineArgs.TryParse(args, out var parsed))

Robust.Client/GameObjects/ClientEntityManager.Network.cs

@@ -42,6 +42,8 @@ public sealed partial class ClientEntityManager
         var pending = PendingNetEntityStates.GetOrNew(nEntity);
         pending.Add((typeof(T), callerEntity));
 
+
+
         return entity.Item1;
     }
 

Robust.Client/GameObjects/ClientEntityManager.cs

@@ -221,7 +221,7 @@ namespace Robust.Client.GameObjects
         public void DispatchReceivedNetworkMsg(EntityEventArgs msg)
         {
             var sessionType = typeof(EntitySessionMessage<>).MakeGenericType(msg.GetType());
-            var sessionMsg = Activator.CreateInstance(sessionType, new EntitySessionEventArgs(_playerManager.LocalPlayer!.Session), msg)!;
+            var sessionMsg = Activator.CreateInstance(sessionType, new EntitySessionEventArgs(_playerManager.LocalSession!), msg)!;
             ReceivedSystemMessage?.Invoke(this, msg);
             ReceivedSystemMessage?.Invoke(this, sessionMsg);
         }

Robust.Client/GameObjects/EntitySystems/ClientOccluderSystem.cs

@@ -27,7 +27,6 @@ internal sealed class ClientOccluderSystem : OccluderSystem
         base.Initialize();
 
         SubscribeLocalEvent<OccluderComponent, AnchorStateChangedEvent>(OnAnchorChanged);
-        SubscribeLocalEvent<OccluderComponent, ReAnchorEvent>(OnReAnchor);
         SubscribeLocalEvent<OccluderComponent, ComponentShutdown>(OnShutdown);
     }
 
@@ -90,11 +89,6 @@ internal sealed class ClientOccluderSystem : OccluderSystem
         AnchorStateChanged(uid, comp, args.Transform);
     }
 
-    private void OnReAnchor(EntityUid uid, OccluderComponent comp, ref ReAnchorEvent args)
-    {
-        AnchorStateChanged(uid, comp, args.Xform);
-    }
-
     private void QueueOccludedDirectionUpdate(EntityUid sender, OccluderComponent occluder, TransformComponent? xform = null)
     {
         if (!Resolve(sender, ref xform))
@@ -174,8 +168,9 @@ internal sealed class ClientOccluderSystem : OccluderSystem
 
         var tile = grid.TileIndicesFor(xform.Coordinates);
 
-        DebugTools.Assert(occluder.LastPosition == null
-            || occluder.LastPosition.Value.Grid == xform.GridUid && occluder.LastPosition.Value.Tile == tile);
+        // TODO: Sub to parent changes instead or something.
+        // DebugTools.Assert(occluder.LastPosition == null
+            // || occluder.LastPosition.Value.Grid == xform.GridUid && occluder.LastPosition.Value.Tile == tile);
         occluder.LastPosition = (xform.GridUid.Value, tile);
 
         // dir starts at the relative effective south direction;

Robust.Client/GameObjects/EntitySystems/ContainerSystem.cs

@@ -63,6 +63,17 @@ namespace Robust.Client.GameObjects
             Insert((uid, TransformQuery.GetComponent(uid), MetaQuery.GetComponent(uid), null), container);
         }
 
+        public override void ShutdownContainer(BaseContainer container)
+        {
+            foreach (var ent in container.ExpectedEntities)
+            {
+                if (ExpectedEntities.Remove(ent, out var c))
+                    DebugTools.Assert(c == container);
+            }
+
+            base.ShutdownContainer(container);
+        }
+
         private void HandleComponentState(EntityUid uid, ContainerManagerComponent component, ref ComponentHandleState args)
         {
             if (args.Current is not ContainerManagerComponentState cast)

Robust.Client/GameObjects/EntitySystems/InputSystem.cs

@@ -105,12 +105,10 @@ namespace Robust.Client.GameObjects
         /// <param name="inputCmd">Input command to handle as predicted.</param>
         public void PredictInputCommand(IFullInputCmdMessage inputCmd)
         {
-            DebugTools.AssertNotNull(_playerManager.LocalPlayer);
-
             var keyFunc = _inputManager.NetworkBindMap.KeyFunctionName(inputCmd.InputFunctionId);
 
             Predicted = true;
-            var session = _playerManager.LocalPlayer!.Session;
+            var session = _playerManager.LocalSession;
             foreach (var handler in BindRegistry.GetHandlers(keyFunc))
             {
                 if (handler.HandleCmdMessage(EntityManager, session, inputCmd))
@@ -145,27 +143,22 @@ namespace Robust.Client.GameObjects
 
         private void GenerateInputCommand(IConsoleShell shell, string argstr, string[] args)
         {
-            var localPlayer = _playerManager.LocalPlayer;
-            if(localPlayer is null)
-                return;
-
-            var pent = localPlayer.ControlledEntity;
-            if(pent is null)
+            if (_playerManager.LocalEntity is not { } pent)
                 return;
 
             BoundKeyFunction keyFunction = new BoundKeyFunction(args[0]);
             BoundKeyState state = args[1] == "u" ? BoundKeyState.Up: BoundKeyState.Down;
 
-            var pxform = Transform(pent.Value);
+            var pxform = Transform(pent);
             var wPos = pxform.WorldPosition + new Vector2(float.Parse(args[2]), float.Parse(args[3]));
-            var coords = EntityCoordinates.FromMap(EntityManager, pent.Value, new MapCoordinates(wPos, pxform.MapID));
+            var coords = EntityCoordinates.FromMap(EntityManager, pent, new MapCoordinates(wPos, pxform.MapID));
 
             var funcId = _inputManager.NetworkBindMap.KeyFunctionID(keyFunction);
 
             var message = new FullInputCmdMessage(_timing.CurTick, _timing.TickFraction, funcId, state,
                 GetNetCoordinates(coords), new ScreenCoordinates(0, 0, default), NetEntity.Invalid);
 
-            HandleInputCommand(localPlayer.Session, keyFunction, message);
+            HandleInputCommand(_playerManager.LocalSession, keyFunction, message);
         }
 
         private void OnAttachedEntityChanged(LocalPlayerAttachedEvent message)
@@ -208,11 +201,8 @@ namespace Robust.Client.GameObjects
         /// </summary>
         public void SetEntityContextActive()
         {
-            var controlled = _playerManager.LocalPlayer?.ControlledEntity ?? EntityUid.Invalid;
-            if (controlled == EntityUid.Invalid)
-            {
+            if (_playerManager.LocalEntity is not { } controlled)
                 return;
-            }
 
             SetEntityContextActive(_inputManager, controlled);
         }

Robust.Client/GameObjects/EntitySystems/SpriteSystem.cs

@@ -62,7 +62,7 @@ namespace Robust.Client.GameObjects
             SubscribeLocalEvent<SpriteComponent, SpriteUpdateInertEvent>(QueueUpdateInert);
             SubscribeLocalEvent<SpriteComponent, ComponentInit>(OnInit);
 
-            _cfg.OnValueChanged(CVars.RenderSpriteDirectionBias, OnBiasChanged, true);
+            Subs.CVar(_cfg, CVars.RenderSpriteDirectionBias, OnBiasChanged, true);
             _sawmill = _logManager.GetSawmill("sprite");
         }
 
@@ -72,12 +72,6 @@ namespace Robust.Client.GameObjects
             QueueUpdateInert(uid, component);
         }
 
-        public override void Shutdown()
-        {
-            base.Shutdown();
-            _cfg.UnsubValueChanged(CVars.RenderSpriteDirectionBias, OnBiasChanged);
-        }
-
         private void OnBiasChanged(double value)
         {
             SpriteComponent.DirectionBias = value;

Robust.Client/GameObjects/EntitySystems/UserInterfaceSystem.cs

@@ -29,10 +29,7 @@ namespace Robust.Client.GameObjects
 
             var uiKey = ev.UiKey;
             var message = ev.Message;
-            // This should probably not happen at this point, but better make extra sure!
-            if (_playerManager.LocalPlayer != null)
-                message.Session = _playerManager.LocalPlayer.Session;
-
+            message.Session = _playerManager.LocalSession!;
             message.Entity = GetNetEntity(uid);
             message.UiKey = uiKey;
 
@@ -75,8 +72,7 @@ namespace Robust.Client.GameObjects
             boundInterface.Open();
             uiComp.OpenInterfaces[uiKey] = boundInterface;
 
-            var playerSession = _playerManager.LocalPlayer?.Session;
-            if (playerSession != null)
+            if (_playerManager.LocalSession is { } playerSession)
             {
                 uiComp.Interfaces[uiKey]._subscribedSessions.Add(playerSession);
                 RaiseLocalEvent(uid, new BoundUIOpenedEvent(uiKey, uid, playerSession), true);

Robust.Client/GameObjects/EntitySystems/VelocityDebugSystem.cs

@@ -35,7 +35,7 @@ namespace Robust.Client.GameObjects
                 return;
             }
 
-            var player = _playerManager.LocalPlayer?.ControlledEntity;
+            var player = _playerManager.LocalEntity;
 
             if (player == null || !EntityManager.TryGetComponent(player.Value, out PhysicsComponent? body))
             {

Robust.Client/GameStates/ClientGameStateManager.cs

@@ -49,16 +49,16 @@ namespace Robust.Client.GameStates
         // Game state dictionaries that get used every tick.
         private readonly Dictionary<EntityUid, (NetEntity NetEntity, MetaDataComponent Meta, bool EnteringPvs, GameTick LastApplied, EntityState? curState, EntityState? nextState)> _toApply = new();
         private readonly Dictionary<NetEntity, EntityState> _toCreate = new();
-        private readonly Dictionary<ushort, (IComponent Component, ComponentState? curState, ComponentState? nextState)> _compStateWork = new();
+        private readonly Dictionary<ushort, (IComponent Component, IComponentState? curState, IComponentState? nextState)> _compStateWork = new();
         private readonly Dictionary<EntityUid, HashSet<Type>> _pendingReapplyNetStates = new();
         private readonly HashSet<NetEntity> _stateEnts = new();
         private readonly List<EntityUid> _toDelete = new();
         private readonly List<IComponent> _toRemove = new();
-        private readonly Dictionary<NetEntity, Dictionary<ushort, ComponentState>> _outputData = new();
+        private readonly Dictionary<NetEntity, Dictionary<ushort, IComponentState>> _outputData = new();
         private readonly List<(EntityUid, TransformComponent)> _queuedBroadphaseUpdates = new();
 
-        private readonly ObjectPool<Dictionary<ushort, ComponentState>> _compDataPool =
-            new DefaultObjectPool<Dictionary<ushort, ComponentState>>(new DictPolicy<ushort, ComponentState>(), 256);
+        private readonly ObjectPool<Dictionary<ushort, IComponentState>> _compDataPool =
+            new DefaultObjectPool<Dictionary<ushort, IComponentState>>(new DictPolicy<ushort, IComponentState>(), 256);
 
         private uint _metaCompNetId;
 
@@ -232,9 +232,9 @@ namespace Robust.Client.GameStates
                 return default;
             }
 
-            DebugTools.AssertNotNull(_players.LocalPlayer);
+            DebugTools.Assert(_players.LocalSession != null);
 
-            var evArgs = new EntitySessionEventArgs(_players.LocalPlayer!.Session);
+            var evArgs = new EntitySessionEventArgs(_players.LocalSession);
             _pendingSystemMessages.Enqueue((_nextInputCmdSeq, _timing.CurTick, message,
                 new EntitySessionMessage<T>(evArgs, message)));
 
@@ -257,7 +257,7 @@ namespace Robust.Client.GameStates
         public void UpdateFullRep(GameState state, bool cloneDelta = false)
             => _processor.UpdateFullRep(state, cloneDelta);
 
-        public Dictionary<NetEntity, Dictionary<ushort, ComponentState>> GetFullRep()
+        public Dictionary<NetEntity, Dictionary<ushort, IComponentState>> GetFullRep()
             => _processor.GetFullRep();
 
         private void HandlePvsLeaveMessage(MsgStateLeavePvs message)
@@ -779,15 +779,13 @@ namespace Robust.Client.GameStates
                     newMeta.LastStateApplied = curState.ToSequence;
 
                     // Check if there's any component states awaiting this entity.
-                    if (_entityManager.PendingNetEntityStates.TryGetValue(es.NetEntity, out var value))
+                    if (_entityManager.PendingNetEntityStates.Remove(es.NetEntity, out var value))
                     {
                         foreach (var (type, owner) in value)
                         {
                             var pending = _pendingReapplyNetStates.GetOrNew(owner);
                             pending.Add(type);
                         }
-
-                        _entityManager.PendingNetEntityStates.Remove(es.NetEntity);
                     }
                 }
 
@@ -851,6 +849,17 @@ namespace Robust.Client.GameStates
                 if (!metas.TryGetComponent(uid, out var meta))
                     continue;
 
+                // It may also have been queued for deletion, in which case its last server state entry has already been removed.
+                // I love me some spaghetti order-of-operation dependent code
+
+                if (!_processor._lastStateFullRep.ContainsKey(meta.NetEntity))
+                {
+                    DebugTools.Assert(curState.EntityDeletions.Value.Contains(meta.NetEntity));
+                    continue;
+                }
+
+                DebugTools.Assert(!curState.EntityDeletions.Value.Contains(meta.NetEntity));
+
                 // State already being re-applied so don't bulldoze it.
                 ref var state = ref CollectionsMarshal.GetValueRefOrAddDefault(_toApply, uid, out var exists);
 

Robust.Client/GameStates/GameStateProcessor.cs

@@ -32,7 +32,7 @@ namespace Robust.Client.GameStates
         /// <summary>
         /// This dictionary stores the full most recently received server state of any entity. This is used whenever predicted entities get reset.
         /// </summary>
-        internal readonly Dictionary<NetEntity, Dictionary<ushort, ComponentState>> _lastStateFullRep
+        internal readonly Dictionary<NetEntity, Dictionary<ushort, IComponentState>> _lastStateFullRep
             = new();
 
         /// <inheritdoc />
@@ -212,7 +212,7 @@ Had full state: {LastFullState != null}"
             {
                 if (!_lastStateFullRep.TryGetValue(entityState.NetEntity, out var compData))
                 {
-                    compData = new Dictionary<ushort, ComponentState>();
+                    compData = new Dictionary<ushort, IComponentState>();
                     _lastStateFullRep.Add(entityState.NetEntity, compData);
                 }
 
@@ -391,7 +391,7 @@ Had full state: {LastFullState != null}"
             LastFullStateRequested = null;
         }
 
-        public void MergeImplicitData(Dictionary<NetEntity, Dictionary<ushort, ComponentState>> implicitData)
+        public void MergeImplicitData(Dictionary<NetEntity, Dictionary<ushort, IComponentState>> implicitData)
         {
             foreach (var (netEntity, implicitEntState) in implicitData)
             {
@@ -425,18 +425,18 @@ Had full state: {LastFullState != null}"
             }
         }
 
-        public Dictionary<ushort, ComponentState> GetLastServerStates(NetEntity netEntity)
+        public Dictionary<ushort, IComponentState> GetLastServerStates(NetEntity netEntity)
         {
             return _lastStateFullRep[netEntity];
         }
 
-        public Dictionary<NetEntity, Dictionary<ushort, ComponentState>> GetFullRep()
+        public Dictionary<NetEntity, Dictionary<ushort, IComponentState>> GetFullRep()
         {
             return _lastStateFullRep;
         }
 
         public bool TryGetLastServerStates(NetEntity entity,
-            [NotNullWhen(true)] out Dictionary<ushort, ComponentState>? dictionary)
+            [NotNullWhen(true)] out Dictionary<ushort, IComponentState>? dictionary)
         {
             return _lastStateFullRep.TryGetValue(entity, out dictionary);
         }

Robust.Client/GameStates/IClientGameStateManager.cs

@@ -113,7 +113,7 @@ namespace Robust.Client.GameStates
         /// <summary>
         /// Returns the full collection of cached game states that are used to reset predicted entities.
         /// </summary>
-        Dictionary<NetEntity, Dictionary<ushort, ComponentState>> GetFullRep();
+        Dictionary<NetEntity, Dictionary<ushort, IComponentState>> GetFullRep();
 
         /// <summary>
         /// This will perform some setup in order to reset the game to an earlier state. To fully reset the state

Robust.Client/GameStates/IGameStateProcessor.cs

@@ -83,13 +83,13 @@ namespace Robust.Client.GameStates
         ///     The data to merge.
         ///     It's a dictionary of entity ID -> (component net ID -> ComponentState)
         /// </param>
-        void MergeImplicitData(Dictionary<NetEntity, Dictionary<ushort, ComponentState>> data);
+        void MergeImplicitData(Dictionary<NetEntity, Dictionary<ushort, IComponentState>> data);
 
         /// <summary>
         ///     Get the last state data from the server for an entity.
         /// </summary>
         /// <returns>Dictionary (net ID -> ComponentState)</returns>
-        Dictionary<ushort, ComponentState> GetLastServerStates(NetEntity entity);
+        Dictionary<ushort, IComponentState> GetLastServerStates(NetEntity entity);
 
         /// <summary>
         ///     Calculate the number of applicable states in the game state buffer from a given tick.
@@ -99,6 +99,6 @@ namespace Robust.Client.GameStates
         int GetApplicableStateCount(GameTick? fromTick);
 
         bool TryGetLastServerStates(NetEntity entity,
-            [NotNullWhen(true)] out Dictionary<ushort, ComponentState>? dictionary);
+            [NotNullWhen(true)] out Dictionary<ushort, IComponentState>? dictionary);
     }
 }

Robust.Client/GameStates/NetGraphOverlay.cs

@@ -313,7 +313,7 @@ namespace Robust.Client.GameStates
 
                 if (args.Length == 0)
                 {
-                    entity = _playerManager.LocalPlayer?.ControlledEntity ?? EntityUid.Invalid;
+                    entity = _playerManager.LocalEntity ?? EntityUid.Invalid;
                 }
                 else if (!NetEntity.TryParse(args[0], out var netEntity) || !_entManager.TryGetEntity(netEntity, out entity))
                 {

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

@@ -28,6 +28,8 @@ namespace Robust.Client.Graphics.Clyde
         private int _verticesPerChunk(MapChunk chunk) => chunk.ChunkSize * chunk.ChunkSize * 4;
         private int _indicesPerChunk(MapChunk chunk) => chunk.ChunkSize * chunk.ChunkSize * GetQuadBatchIndexCount();
 
+        private List<Entity<MapGridComponent>> _grids = new();
+
         private void _drawGrids(Viewport viewport, Box2 worldAABB, Box2Rotated worldBounds, IEye eye)
         {
             var mapId = eye.Position.MapId;
@@ -37,14 +39,15 @@ namespace Robust.Client.Graphics.Clyde
                 mapId = MapId.Nullspace;
             }
 
-            var grids = new List<Entity<MapGridComponent>>();
-            _mapManager.FindGridsIntersecting(mapId, worldBounds, ref grids);
+            _grids.Clear();
+            _mapManager.FindGridsIntersecting(mapId, worldBounds, ref _grids);
 
             var requiresFlush = true;
             GLShaderProgram gridProgram = default!;
             var gridOverlays = GetOverlaysForSpace(OverlaySpace.WorldSpaceGrids);
+            var mapSystem = _entityManager.System<SharedMapSystem>();
 
-            foreach (var mapGrid in grids)
+            foreach (var mapGrid in _grids)
             {
                 if (!_mapChunkData.TryGetValue(mapGrid, out var data))
                 {
@@ -65,7 +68,7 @@ namespace Robust.Client.Graphics.Clyde
 
                 var transform = _entityManager.GetComponent<TransformComponent>(mapGrid);
                 gridProgram.SetUniform(UniIModelMatrix, transform.WorldMatrix);
-                var enumerator = mapGrid.Comp.GetMapChunks(worldBounds);
+                var enumerator = mapSystem.GetMapChunks(mapGrid.Owner, mapGrid.Comp, worldBounds);
 
                 while (enumerator.MoveNext(out var chunk))
                 {

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

@@ -224,8 +224,8 @@ namespace Robust.Client.Graphics.Clyde
                     fixed (char* pCaption = "RobustToolbox: Failed to create window")
                     {
                         Windows.MessageBoxW(HWND.NULL,
-                            (ushort*) pText,
-                            (ushort*) pCaption,
+                            pText,
+                            pCaption,
                             MB.MB_OK | MB.MB_ICONERROR);
                     }
                 }

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

@@ -413,7 +413,7 @@ namespace Robust.Client.Graphics.Clyde
                     DXGI_ADAPTER_DESC1 desc;
                     ThrowIfFailed("GetDesc1", _adapter->GetDesc1(&desc));
 
-                    var descName = new ReadOnlySpan<char>(desc.Description, 128).TrimEnd('\0');
+                    var descName = ((ReadOnlySpan<char>)desc.Description).TrimEnd('\0');
 
                     Logger.DebugS("clyde.ogl.angle", "Successfully created D3D11 device!");
                     Logger.DebugS("clyde.ogl.angle", $"D3D11 Device Adapter: {descName.ToString()}");
@@ -493,7 +493,7 @@ namespace Robust.Client.Graphics.Clyde
                     DXGI_ADAPTER_DESC1 desc;
                     ThrowIfFailed("GetDesc1", adapter->GetDesc1(&desc));
 
-                    var descName = new ReadOnlySpan<char>(desc.Description, 128);
+                    var descName = ((ReadOnlySpan<char>)desc.Description);
 
                     if (descName.StartsWith(name))
                         return adapter;

Robust.Client/Graphics/Clyde/Shaders/z-library.glsl

@@ -193,8 +193,13 @@ highp float zFBM(highp vec2 uv) {
 // -- generative --
 
 // Function that creates a circular gradient. Screenspace shader bread n butter.
-highp float zCircleGradient(highp vec2 center, highp vec2 coord, highp float maxi, highp float radius, highp float dist, highp float power) {
-    return pow(clamp((length(center - coord) / radius) - dist, 0.0, maxi), power);
+highp float zCircleGradient(highp vec2 ps, highp vec2 coord, highp float maxi, highp float radius, highp float dist, highp float power) {
+    highp float rad = (radius * ps.y) * 0.001;
+    highp float aspectratio = ps.x / ps.y;
+    highp vec2 totaldistance = ((ps * 0.5) - coord) / (rad * ps);
+    totaldistance.x *= aspectratio;
+    highp float length = (length(totaldistance) * ps.y) - dist;
+    return pow(clamp(length, 0.0, maxi), power);
 }
 
 // -- Utilities End --

Robust.Client/Graphics/Clyde/VramCommand.cs

@@ -36,7 +36,7 @@ namespace Robust.Client.Graphics.Clyde
                 adapter->Release();
                 ThrowIfFailed("GetDesc", adapter3->GetDesc2(&desc));
 
-                var descString = new ReadOnlySpan<char>(desc.Description, 128).TrimEnd('\0');
+                var descString = ((ReadOnlySpan<char>)desc.Description).TrimEnd('\0');
                 shell.WriteLine(descString.ToString());
 
                 DXGI_QUERY_VIDEO_MEMORY_INFO memInfo;

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

@@ -10,8 +10,11 @@ using Robust.Shared.Maths;
 using Robust.Shared.Utility;
 using SixLabors.ImageSharp.PixelFormats;
 using TerraFX.Interop.Windows;
+using TerraFX.Interop.Xlib;
 using GlfwImage = OpenToolkit.GraphicsLibraryFramework.Image;
 using Monitor = OpenToolkit.GraphicsLibraryFramework.Monitor;
+using Window = OpenToolkit.GraphicsLibraryFramework.Window;
+using X11Window = TerraFX.Interop.Xlib.Window;
 
 namespace Robust.Client.Graphics.Clyde
 {
@@ -468,6 +471,11 @@ namespace Robust.Client.Graphics.Clyde
                     GLFW.MaximizeWindow(window);
                 }
 
+                if ((parameters.Styles & OSWindowStyles.NoTitleBar) != 0)
+                {
+                    GLFW.WindowHint(WindowHintBool.Decorated, false);
+                }
+
                 if ((parameters.Styles & OSWindowStyles.NoTitleOptions) != 0)
                 {
                     if (OperatingSystem.IsWindows())
@@ -481,6 +489,35 @@ namespace Robust.Client.Graphics.Clyde
                             // Cast to long here to work around a bug in rider with nint bitwise operators.
                             (nint)((long)Windows.GetWindowLongPtrW(hWnd, GWL.GWL_STYLE) & ~WS.WS_SYSMENU));
                     }
+                    else if (OperatingSystem.IsLinux())
+                    {
+                        try
+                        {
+                            var x11Window = (X11Window)GLFW.GetX11Window(window);
+                            var x11Display = (Display*) GLFW.GetX11Display(window);
+                            DebugTools.Assert(x11Window != X11Window.NULL);
+                            // https://specifications.freedesktop.org/wm-spec/wm-spec-latest.html#idm46181547486832
+                            var newPropValString = Marshal.StringToCoTaskMemUTF8("_NET_WM_WINDOW_TYPE_DIALOG");
+                            var newPropVal = Xlib.XInternAtom(x11Display, (sbyte*)newPropValString, Xlib.False);
+                            DebugTools.Assert(newPropVal != Atom.NULL);
+
+                            var propNameString = Marshal.StringToCoTaskMemUTF8("_NET_WM_WINDOW_TYPE");
+#pragma warning disable CA1806
+                            // [display] [window] [property] [type] [format (8, 16,32)] [mode] [data] [element count]
+                            Xlib.XChangeProperty(x11Display, x11Window,
+                                Xlib.XInternAtom(x11Display, (sbyte*)propNameString, Xlib.False), // should never be null; part of spec
+                                Xlib.XA_ATOM, 32, Xlib.PropModeReplace,
+                                (byte*)&newPropVal, 1);
+#pragma warning restore CA1806
+
+                            Marshal.FreeCoTaskMem(newPropValString);
+                            Marshal.FreeCoTaskMem(propNameString);
+                        }
+                        catch (EntryPointNotFoundException)
+                        {
+                            _sawmill.Warning("OSWindowStyles.NoTitleOptions not implemented on this windowing manager");
+                        }
+                    }
                     else
                     {
                         _sawmill.Warning("OSWindowStyles.NoTitleOptions not implemented on this platform");
@@ -500,6 +537,25 @@ namespace Robust.Client.Graphics.Clyde
                             GWLP.GWLP_HWNDPARENT,
                             ownerHWnd);
                     }
+                    else if (OperatingSystem.IsLinux())
+                    {
+                        try
+                        {
+                            var x11Display = (Display*) GLFW.GetX11Display(window);
+                            var thisWindow = (X11Window)GLFW.GetX11Window(window);
+                            var parentWindow = (X11Window)GLFW.GetX11Window(ownerWindow);
+                            DebugTools.Assert(thisWindow != X11Window.NULL);
+                            DebugTools.Assert(parentWindow != X11Window.NULL);
+
+#pragma warning disable CA1806
+                            Xlib.XSetTransientForHint(x11Display, thisWindow, parentWindow);
+#pragma warning restore CA1806
+                        }
+                        catch (EntryPointNotFoundException)
+                        {
+                            _sawmill.Warning("owner windows not implemented on this windowing manager");
+                        }
+                    }
                     else
                     {
                         _sawmill.Warning("owner windows not implemented on this platform");
@@ -598,7 +654,7 @@ namespace Robust.Client.Graphics.Clyde
 
             private static void WinThreadGetClipboard(CmdGetClipboard cmd)
             {
-                var clipboard = GLFW.GetClipboardString((Window*) cmd.Window);
+                var clipboard = GLFW.GetClipboardString((Window*) cmd.Window) ?? "";
                 // Don't have to care about synchronization I don't think so just fire this immediately.
                 cmd.Tcs.TrySetResult(clipboard);
             }

Robust.Client/Graphics/Drawing/DrawingHandleScreen.cs

@@ -2,6 +2,7 @@ using System;
 using System.Numerics;
 using System.Text;
 using Robust.Client.GameObjects;
+using Robust.Shared.Collections;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Graphics;
 using Robust.Shared.Maths;
@@ -14,6 +15,79 @@ namespace Robust.Client.Graphics
         {
         }
 
+        /// <summary>
+        /// Simialr to DrawLine but has dashes interspersed.
+        /// </summary>
+        /// <param name="offset">Offset from the start of the line.</param>
+        /// <param name="dashSize">How long a dash is.</param>
+        /// <param name="gapSize">How long the gap between dashes is.</param>
+        public void DrawDottedLine(Vector2 from, Vector2 to, Color color, float offset = 0f, float dashSize = 8f, float gapSize = 2f)
+        {
+            var lineVector = to - from;
+
+            // No drawing for you.
+            if (lineVector.LengthSquared() < 10f * float.Epsilon)
+                return;
+
+            var lineAndGap = gapSize + dashSize;
+            var lines = new ValueList<Vector2>();
+
+            // Minimum distance.
+            if (lineVector.Length() < lineAndGap)
+            {
+                lines.Add(from);
+                lines.Add(to);
+            }
+            else
+            {
+                var maxLength = lineVector.Length();
+                var normalizedLine = lineVector.Normalized();
+                var dashVector = normalizedLine * dashSize;
+                var gapVector = normalizedLine * gapSize;
+
+                var position = from;
+                offset %= (dashSize + gapSize);
+                var length = offset;
+                var dashLength = dashSize;
+
+                // If offset is less than gap size then start with a gap
+                // otherwise start with a partial line
+                if (offset > 0f)
+                {
+                    if (offset < gapSize)
+                    {
+                        position += normalizedLine * offset;
+                        length += offset;
+                    }
+                    else
+                    {
+                        dashLength = (offset - gapSize);
+                    }
+                }
+
+                while (length < maxLength)
+                {
+                    lines.Add(position);
+
+                    position += normalizedLine * dashLength;
+                    var lengthFromStart = (position - from).Length();
+
+                    // if over length then cap the thing.
+                    if (lengthFromStart > maxLength)
+                    {
+                        position = to;
+                    }
+
+                    lines.Add(position);
+                    dashLength = dashVector.Length();
+                    position += gapVector;
+                    length = (position - from).Length();
+                }
+            }
+
+            DrawPrimitives(DrawPrimitiveTopology.LineList, lines.Span, color);
+        }
+
         public abstract void DrawRect(UIBox2 rect, Color color, bool filled = true);
 
         public abstract void DrawTextureRectRegion(Texture texture, UIBox2 rect, UIBox2? subRegion = null, Color? modulate = null);

Robust.Client/Graphics/IRenderHandle.cs

@@ -6,7 +6,10 @@ using Robust.Shared.Maths;
 
 namespace Robust.Client.Graphics
 {
-    internal interface IRenderHandle
+    /// <remarks>
+    ///     Unstable API. Likely to break hard during renderer rewrite if you rely on it.
+    /// </remarks>
+    public interface IRenderHandle
     {
         DrawingHandleScreen DrawingHandleScreen { get; }
         DrawingHandleWorld DrawingHandleWorld { get; }

Robust.Client/Graphics/Shaders/ShaderPrototype.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections.Generic;
 using System.Numerics;
 using Robust.Client.ResourceManagement;
@@ -69,7 +69,7 @@ namespace Robust.Client.Graphics
                     ShaderBlendMode? blend = null;
                     if (_rawBlendMode != null)
                     {
-                        if (!Enum.TryParse<ShaderBlendMode>(_rawBlendMode.ToUpper(), out var parsed))
+                        if (!Enum.TryParse<ShaderBlendMode>(_rawBlendMode, true, out var parsed))
                             Logger.Error($"invalid mode: {_rawBlendMode}");
                         else
                             blend = parsed;

Robust.Client/Graphics/WindowCreateParameters.cs

@@ -59,6 +59,11 @@ namespace Robust.Client.Graphics
         /// <summary>
         /// Hide title buttons such as close and minimize.
         /// </summary>
-        NoTitleOptions = 1 << 0
+        NoTitleOptions = 1 << 0,
+
+        /// <summary>
+        /// Completely hide the title bar
+        /// </summary>
+        NoTitleBar = 1 << 1,
     }
 }

Robust.Client/Input/IInputManager.cs

@@ -40,7 +40,7 @@ namespace Robust.Client.Input
         void KeyDown(KeyEventArgs e);
         void KeyUp(KeyEventArgs e);
 
-        IKeyBinding RegisterBinding(in KeyBindingRegistration reg, bool markModified=true);
+        IKeyBinding RegisterBinding(in KeyBindingRegistration reg, bool markModified=true, bool invalid=false);
 
         void RemoveBinding(IKeyBinding binding, bool markModified=true);
 

Robust.Client/Input/InputManager.cs

@@ -124,12 +124,19 @@ namespace Robust.Client.Input
             var path = new ResPath(KeybindsPath);
             if (_resourceMan.UserData.Exists(path))
             {
-                LoadKeyFile(path, true);
+                try
+                {
+                    LoadKeyFile(path, false, true);
+                }
+                catch (Exception e)
+                {
+                    Logger.ErrorS("input", "Failed to load user keybindings: " + e);
+                }
             }
 
             if (_resourceMan.ContentFileExists(path))
             {
-                LoadKeyFile(path, false);
+                LoadKeyFile(path, true);
             }
         }
 
@@ -489,7 +496,13 @@ namespace Robust.Client.Input
             return true;
         }
 
-        private void LoadKeyFile(ResPath file, bool userData)
+        /// <summary>
+        /// Loads a keybind file, configuring keybinds.
+        /// </summary>
+        /// <param name="file">File to load from the content package</param>
+        /// <param name="defaultRegistration">Whether or not this is a "default" keybind set. If it is, then it won't override the current configuration, only the defaults.</param>
+        /// <param name="userData">Whether or not to load from the user data directory instead of the content package.</param>
+        public void LoadKeyFile(ResPath file, bool defaultRegistration, bool userData = false)
         {
             TextReader reader;
             if (userData)
@@ -510,16 +523,19 @@ namespace Robust.Client.Input
             {
                 var baseKeyRegs = _serialization.Read<KeyBindingRegistration[]>(BaseKeyRegsNode, notNullableOverride: true);
 
+
                 foreach (var reg in baseKeyRegs)
                 {
+                    var invalid = false;
+
                     if (reg.Type != KeyBindingType.Command && !NetworkBindMap.FunctionExists(reg.Function.FunctionName))
                     {
-                        Logger.ErrorS("input", "Key function in {0} does not exist: '{1}'", file,
+                        Logger.DebugS("input", "Key function in {0} does not exist: '{1}'.", file,
                             reg.Function);
-                        continue;
+                        invalid = true;
                     }
 
-                    if (!userData)
+                    if (defaultRegistration)
                     {
                         _defaultRegistrations.Add(reg);
 
@@ -531,19 +547,24 @@ namespace Robust.Client.Input
                         }
                     }
 
-                    RegisterBinding(reg, markModified: userData);
+                    RegisterBinding(reg, markModified: !defaultRegistration, invalid);
                 }
             }
 
-            if (userData && mapping.TryGet("leaveEmpty", out var node))
+            if (!defaultRegistration && mapping.TryGet("leaveEmpty", out var node))
             {
                 var leaveEmpty = _serialization.Read<BoundKeyFunction[]>(node, notNullableOverride: true);
 
-                if (leaveEmpty.Length > 0)
+                foreach (var bind in leaveEmpty)
                 {
                     // Adding to _modifiedKeyFunctions means that these keybinds won't be loaded from the base file.
                     // Because they've been explicitly cleared.
-                    _modifiedKeyFunctions.UnionWith(leaveEmpty);
+                    _modifiedKeyFunctions.Add(bind);
+
+                    // Adding to bindingsByFunction because if the keybind is not valid(For example if it's from another
+                    // server then we will have problems saving the file)
+                    _bindingsByFunction.GetOrNew(bind);
+
                 }
             }
         }
@@ -571,7 +592,7 @@ namespace Robust.Client.Input
             return binding;
         }
 
-        public IKeyBinding RegisterBinding(in KeyBindingRegistration reg, bool markModified = true)
+        public IKeyBinding RegisterBinding(in KeyBindingRegistration reg, bool markModified = true, bool invalid = false)
         {
             var binding = new KeyBinding(this, reg.Function.FunctionName, reg.Type, reg.BaseKey, reg.CanFocus, reg.CanRepeat,
                 reg.AllowSubCombs, reg.Priority, reg.Mod1, reg.Mod2, reg.Mod3);
@@ -602,7 +623,7 @@ namespace Robust.Client.Input
 
         public void InputModeChanged() => OnInputModeChanged?.Invoke();
 
-        private void RegisterBinding(KeyBinding binding, bool markModified = true)
+        private void RegisterBinding(KeyBinding binding, bool markModified = true, bool invalid = false)
         {
             // we sort larger combos first so they take priority over smaller (single key) combos,
             // so they get processed first in KeyDown and such.
@@ -617,7 +638,8 @@ namespace Robust.Client.Input
                 _modifiedKeyFunctions.Add(binding.Function);
             }
 
-            _bindings.Insert(pos, binding);
+            if (!invalid)
+                _bindings.Insert(pos, binding);
             _bindingsByFunction.GetOrNew(binding.Function).Add(binding);
             OnKeyBindingAdded?.Invoke(binding);
         }

Robust.Client/Map/TileEdgeOverlay.cs

@@ -37,7 +37,9 @@ public sealed class TileEdgeOverlay : GridOverlay
         var tileDimensions = new Vector2(tileSize, tileSize);
         var (_, _, worldMatrix, invMatrix) = xformSystem.GetWorldPositionRotationMatrixWithInv(Grid.Owner);
         args.WorldHandle.SetTransform(worldMatrix);
-        var localAABB = invMatrix.TransformBox(args.WorldBounds);
+        var bounds = args.WorldBounds;
+        bounds = new Box2Rotated(bounds.Box.Enlarged(1), bounds.Rotation, bounds.Origin);
+        var localAABB = invMatrix.TransformBox(bounds);
 
         var enumerator = mapSystem.GetLocalTilesEnumerator(Grid.Owner, Grid, localAABB, false);
 

Robust.Client/Physics/PhysicsSystem.Predict.cs

@@ -207,8 +207,8 @@ public sealed partial class PhysicsSystem
             var contact = contacts[i];
             var uidA = contact.EntityA;
             var uidB = contact.EntityB;
-            var bodyATransform = GetPhysicsTransform(uidA, xformQuery.GetComponent(uidA), xformQuery);
-            var bodyBTransform = GetPhysicsTransform(uidB, xformQuery.GetComponent(uidB), xformQuery);
+            var bodyATransform = GetPhysicsTransform(uidA, xformQuery.GetComponent(uidA));
+            var bodyBTransform = GetPhysicsTransform(uidB, xformQuery.GetComponent(uidB));
             contact.UpdateIsTouching(bodyATransform, bodyBTransform);
         }
 

Robust.Client/Placement/Modes/AlignSimilar.cs

@@ -44,7 +44,7 @@ namespace Robust.Client.Placement.Modes
 
             var closestEntity = snapToEntities[0];
             var closestTransform = pManager.EntityManager.GetComponent<TransformComponent>(closestEntity);
-            if (!pManager.EntityManager.TryGetComponent<SpriteComponent?>(closestEntity, out var component) || component.BaseRSI == null)
+            if (!pManager.EntityManager.TryGetComponent(closestEntity, out SpriteComponent? component) || component.BaseRSI == null)
             {
                 return;
             }

Robust.Client/Placement/PlacementManager.cs

@@ -495,7 +495,7 @@ namespace Robust.Client.Placement
         {
             // Try to get current map.
             var map = MapId.Nullspace;
-            if (EntityManager.TryGetComponent(PlayerManager.LocalPlayer?.ControlledEntity, out TransformComponent? xform))
+            if (EntityManager.TryGetComponent(PlayerManager.LocalEntity, out TransformComponent? xform))
             {
                 map = xform.MapID;
             }
@@ -512,7 +512,7 @@ namespace Robust.Client.Placement
 
         private bool CurrentEraserMouseCoordinates(out EntityCoordinates coordinates)
         {
-            var ent = PlayerManager.LocalPlayer?.ControlledEntity ?? EntityUid.Invalid;
+            var ent = PlayerManager.LocalEntity ?? EntityUid.Invalid;
             if (ent == EntityUid.Invalid)
             {
                 coordinates = new EntityCoordinates();
@@ -640,7 +640,7 @@ namespace Robust.Client.Placement
 
             if (CurrentPermission is not {Range: > 0} ||
                 !CurrentMode.RangeRequired ||
-                PlayerManager.LocalPlayer?.ControlledEntity is not {Valid: true} controlled)
+                PlayerManager.LocalEntity is not {Valid: true} controlled)
                 return;
 
             var worldPos = EntityManager.GetComponent<TransformComponent>(controlled).WorldPosition;

Robust.Client/Placement/PlacementMode.cs

@@ -216,7 +216,7 @@ namespace Robust.Client.Placement
         {
             if (!RangeRequired)
                 return true;
-            var controlled = pManager.PlayerManager.LocalPlayer?.ControlledEntity ?? EntityUid.Invalid;
+            var controlled = pManager.PlayerManager.LocalEntity ?? EntityUid.Invalid;
             if (controlled == EntityUid.Invalid)
             {
                 return false;

Robust.Client/Player/FilterSystem.cs

@@ -10,14 +10,13 @@ namespace Robust.Client.Player
 
         public override Filter FromEntities(Filter filter, params EntityUid[] entities)
         {
-            if (_playerManager.LocalPlayer is not { } localPlayer
-                || localPlayer.Session.AttachedEntity is not {Valid: true} attachedUid)
+            if (_playerManager.LocalEntity is not {Valid: true} attachedUid)
                 return filter;
 
             foreach (var uid in entities)
             {
                 if (uid == attachedUid)
-                    filter.AddPlayer(localPlayer.Session);
+                    filter.AddPlayer(_playerManager.LocalSession!);
             }
 
             return filter;

Robust.Client/Player/PlayerManager.cs

@@ -162,11 +162,14 @@ namespace Robust.Client.Player
                 return true;
             }
 
-            if (!EntManager.EnsureComponent(uid.Value, out EyeComponent eye))
+            if (!EntManager.HasComponent<EyeComponent>(uid.Value))
             {
                 if (_client.RunLevel != ClientRunLevel.SinglePlayerGame)
                     Sawmill.Warning($"Attaching local player to an entity {EntManager.ToPrettyString(uid)} without an eye. This eye will not be netsynced and may cause issues.");
+                var eye = (EyeComponent) Factory.GetComponent(typeof(EyeComponent));
+                eye.Owner = uid.Value;
                 eye.NetSyncEnabled = false;
+                EntManager.AddComponent(uid.Value, eye);
             }
 
             Sawmill.Info($"Attaching local player to {EntManager.ToPrettyString(uid)}.");

Robust.Client/Replays/ReplayRecordingManager.cs

@@ -36,12 +36,12 @@ internal sealed class ReplayRecordingManager : SharedReplayRecordingManager
 
     private void OnRecordingStarted(MappingDataNode metadata, List<object> messages)
     {
-        if (_player.LocalPlayer == null)
+        if (_player.LocalSession == null)
             return;
 
         // Add information about the user doing the recording. This is used to set the default replay observer position
         // when playing back the replay.
-        var guid = _player.LocalPlayer.UserId.UserId.ToString();
+        var guid = _player.LocalUser.ToString();
         metadata[ReplayConstants.MetaKeyRecordedBy] = new ValueDataNode(guid);
     }
 

Robust.Client/Robust.Client.csproj

@@ -5,32 +5,33 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <OutputType>WinExe</OutputType>
     <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
-    <NoWarn>NU1701</NoWarn>
+    <NoWarn>NU1701;CA1416</NoWarn>
     <OutputPath>../bin/Client</OutputPath>
     <RobustILLink>true</RobustILLink>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="DiscordRichPresence" Version="1.0.175" PrivateAssets="compile" />
-    <PackageReference Include="JetBrains.Annotations" Version="2021.3.0" PrivateAssets="All" />
-    <PackageReference Include="Microsoft.Data.Sqlite.Core" Version="6.0.9" PrivateAssets="compile" />
-    <PackageReference Include="SQLitePCLRaw.provider.sqlite3" Version="2.1.2" Condition="'$(UseSystemSqlite)' == 'True'" PrivateAssets="compile" />
-    <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.1.2" Condition="'$(UseSystemSqlite)' != 'True'" PrivateAssets="compile" />
-    <PackageReference Include="SpaceWizards.NFluidsynth" Version="0.1.1" PrivateAssets="compile" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.3" />
-    <PackageReference Include="OpenToolkit.Graphics" Version="4.0.0-pre9.1" PrivateAssets="compile" />
-    <PackageReference Include="OpenTK.OpenAL" Version="4.7.5" PrivateAssets="compile" />
-    <PackageReference Include="SpaceWizards.SharpFont" Version="1.0.1" PrivateAssets="compile" />
-    <PackageReference Include="Robust.Natives" Version="0.1.1" />
-    <PackageReference Include="System.Numerics.Vectors" Version="4.4.0" />
-    <PackageReference Include="TerraFX.Interop.Windows" Version="10.0.20348-rc2" PrivateAssets="compile" />
-    <PackageReference Condition="'$(FullRelease)' != 'True'" Include="JetBrains.Profiler.Api" Version="1.2.0" PrivateAssets="compile" />
-    <PackageReference Include="SpaceWizards.Sodium" Version="0.2.1" PrivateAssets="compile" />
-    <PackageReference Include="Microsoft.NET.ILLink.Tasks" Version="8.0.0" />
+    <PackageReference Include="DiscordRichPresence" PrivateAssets="compile" />
+    <PackageReference Include="JetBrains.Annotations" PrivateAssets="All" />
+    <PackageReference Include="Microsoft.Data.Sqlite.Core" PrivateAssets="compile" />
+    <PackageReference Include="SQLitePCLRaw.provider.sqlite3" Condition="'$(UseSystemSqlite)' == 'True'" PrivateAssets="compile" />
+    <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Condition="'$(UseSystemSqlite)' != 'True'" PrivateAssets="compile" />
+    <PackageReference Include="SpaceWizards.NFluidsynth" PrivateAssets="compile" />
+    <PackageReference Include="SixLabors.ImageSharp" />
+    <PackageReference Include="OpenToolkit.Graphics" PrivateAssets="compile" />
+    <PackageReference Include="OpenTK.OpenAL" PrivateAssets="compile" />
+    <PackageReference Include="SpaceWizards.SharpFont" PrivateAssets="compile" />
+    <PackageReference Include="Robust.Natives" />
+    <PackageReference Include="System.Numerics.Vectors"  />
+    <PackageReference Include="TerraFX.Interop.Windows" PrivateAssets="compile" />
+    <PackageReference Condition="'$(FullRelease)' != 'True'" Include="JetBrains.Profiler.Api" PrivateAssets="compile" />
+    <PackageReference Include="SpaceWizards.Sodium" PrivateAssets="compile" />
+    <PackageReference Include="Microsoft.NET.ILLink.Tasks" />
+    <PackageReference Include="TerraFX.Interop.Xlib" />
   </ItemGroup>
   <ItemGroup Condition="'$(EnableClientScripting)' == 'True'">
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Features" Version="4.0.1" PrivateAssets="compile" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Scripting" Version="4.0.1" PrivateAssets="compile" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.0.1" PrivateAssets="compile" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Features" PrivateAssets="compile" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Scripting" PrivateAssets="compile" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" PrivateAssets="compile" />
 
     <ProjectReference Include="..\Robust.Shared.Scripting\Robust.Shared.Scripting.csproj" />
   </ItemGroup>
@@ -39,7 +40,6 @@
     <ProjectReference Include="..\Lidgren.Network\Lidgren.Network.csproj" />
     <ProjectReference Include="..\OpenToolkit.GraphicsLibraryFramework\OpenToolkit.GraphicsLibraryFramework.csproj" />
     <ProjectReference Include="..\Robust.LoaderApi\Robust.LoaderApi\Robust.LoaderApi.csproj" />
-    <ProjectReference Include="..\Robust.Physics\Robust.Physics.csproj" />
     <ProjectReference Include="..\Robust.Shared.Maths\Robust.Shared.Maths.csproj" />
     <ProjectReference Include="..\Robust.Shared\Robust.Shared.csproj" />
   </ItemGroup>
@@ -54,6 +54,7 @@
     <RobustLinkRoots Include="Robust.Client" />
     <RobustLinkRoots Include="Robust.Shared" />
     <RobustLinkAssemblies Include="TerraFX.Interop.Windows" />
+    <RobustLinkAssemblies Include="TerraFX.Interop.Xlib" />
     <RobustLinkAssemblies Include="OpenToolkit.Graphics" />
   </ItemGroup>
 

Robust.Client/Upload/Commands/UploadFileCommand.cs

@@ -11,15 +11,17 @@ namespace Robust.Client.Upload.Commands;
 
 public sealed class UploadFileCommand : IConsoleCommand
 {
+    [Dependency] private readonly IConfigurationManager _cfgManager = default!;
+    [Dependency] private readonly IFileDialogManager _dialog = default!;
+    [Dependency] private readonly INetManager _netManager = default!;
+
     public string Command => "uploadfile";
     public string Description => "Uploads a resource to the server.";
     public string Help => $"{Command} [relative path for the resource]";
 
     public async void Execute(IConsoleShell shell, string argStr, string[] args)
     {
-        var cfgMan = IoCManager.Resolve<IConfigurationManager>();
-
-        if (!cfgMan.GetCVar(CVars.ResourceUploadingEnabled))
+        if (!_cfgManager.GetCVar(CVars.ResourceUploadingEnabled))
         {
             shell.WriteError("Network Resource Uploading is currently disabled by the server.");
             return;
@@ -33,10 +35,8 @@ public sealed class UploadFileCommand : IConsoleCommand
 
         var path = new ResPath(args[0]).ToRelativePath();
 
-        var dialog = IoCManager.Resolve<IFileDialogManager>();
-
         var filters = new FileDialogFilters(new FileDialogFilters.Group(path.Extension));
-        await using var file = await dialog.OpenFile(filters);
+        await using var file = await _dialog.OpenFile(filters);
 
         if (file == null)
         {
@@ -44,7 +44,7 @@ public sealed class UploadFileCommand : IConsoleCommand
             return;
         }
 
-        var sizeLimit = cfgMan.GetCVar(CVars.ResourceUploadingLimitMb);
+        var sizeLimit = _cfgManager.GetCVar(CVars.ResourceUploadingLimitMb);
 
         if (sizeLimit > 0f && file.Length * SharedNetworkResourceManager.BytesToMegabytes > sizeLimit)
         {
@@ -54,12 +54,12 @@ public sealed class UploadFileCommand : IConsoleCommand
 
         var data = file.CopyToArray();
 
-        var netManager = IoCManager.Resolve<INetManager>();
-        var msg = netManager.CreateNetMessage<NetworkResourceUploadMessage>();
+        var msg = new NetworkResourceUploadMessage
+        {
+            RelativePath = path,
+            Data = data
+        };
 
-        msg.RelativePath = path;
-        msg.Data = data;
-
-        netManager.ClientSendMessage(msg);
+        _netManager.ClientSendMessage(msg);
     }
 }

Robust.Client/Upload/Commands/UploadFolderCommand.cs

@@ -1,3 +1,4 @@
+using System;
 using System.IO;
 using Robust.Shared;
 using Robust.Shared.Configuration;
@@ -13,21 +14,20 @@ namespace Robust.Client.Upload.Commands;
 
 public sealed class UploadFolderCommand : IConsoleCommand
 {
+    [Dependency] private IResourceManager _resourceManager = default!;
+    [Dependency] private IConfigurationManager _configManager = default!;
+    [Dependency] private INetManager _netMan = default!;
+
     public string Command => "uploadfolder";
     public string Description => Loc.GetString("uploadfolder-command-description");
     public string Help => Loc.GetString("uploadfolder-command-help");
 
     private static readonly ResPath BaseUploadFolderPath = new("/UploadFolder");
 
-    [Dependency] private IResourceManager _resourceManager = default!;
-    [Dependency] private IConfigurationManager _configManager = default!;
-    [Dependency] private INetManager _netMan = default!;
-
     public async void Execute(IConsoleShell shell, string argStr, string[] args)
     {
         var fileCount = 0;
 
-
         if (!_configManager.GetCVar(CVars.ResourceUploadingEnabled))
         {
             shell.WriteError( Loc.GetString("uploadfolder-command-resource-upload-disabled"));
@@ -52,8 +52,7 @@ public sealed class UploadFolderCommand : IConsoleCommand
         //Grab all files in specified folder and upload them
         foreach (var filepath in _resourceManager.UserData.Find($"{folderPath.ToRelativePath()}/").files )
         {
-
-            await using var filestream = _resourceManager.UserData.Open(filepath,FileMode.Open);
+            await using var filestream = _resourceManager.UserData.Open(filepath, FileMode.Open);
             {
                 var sizeLimit = _configManager.GetCVar(CVars.ResourceUploadingLimitMb);
                 if (sizeLimit > 0f && filestream.Length * SharedNetworkResourceManager.BytesToMegabytes > sizeLimit)
@@ -64,9 +63,11 @@ public sealed class UploadFolderCommand : IConsoleCommand
 
                 var data = filestream.CopyToArray();
 
-                var msg = _netMan.CreateNetMessage<NetworkResourceUploadMessage>();
-                msg.RelativePath = filepath.RelativeTo(BaseUploadFolderPath);
-                msg.Data = data;
+                var msg = new NetworkResourceUploadMessage
+                {
+                    RelativePath = filepath.RelativeTo(BaseUploadFolderPath),
+                    Data = data
+                };
 
                 _netMan.ClientSendMessage(msg);
                 fileCount++;

Robust.Client/UserInterface/Control.Layout.cs

@@ -226,6 +226,10 @@ namespace Robust.Client.UserInterface
         /// <seealso cref="Rect"/>
         public UIBox2i PixelRect => UIBox2i.FromDimensions(PixelPosition, PixelSize);
 
+        public UIBox2 GlobalRect => UIBox2.FromDimensions(GlobalPosition, _size);
+
+        public UIBox2i GlobalPixelRect => UIBox2i.FromDimensions(GlobalPixelPosition, PixelSize);
+
         /// <summary>
         /// Horizontal alignment mode.
         /// This determines how the control should be laid out horizontally
@@ -464,6 +468,14 @@ namespace Robust.Client.UserInterface
             }
         }
 
+        /// <summary>
+        /// Gets the screen coordinates position relative to the control.
+        /// </summary>
+        public Vector2 GetLocalPosition(ScreenCoordinates coordinates)
+        {
+            return coordinates.Position - GlobalPixelPosition;
+        }
+
         /// <summary>
         /// Notify the layout system that this control's <see cref="Measure"/> result may have changed
         /// and must be recalculated.

Robust.Client/UserInterface/Control.cs

@@ -545,6 +545,36 @@ namespace Robust.Client.UserInterface
             Draw(renderHandle.DrawingHandleScreen);
         }
 
+        protected internal virtual void PreRenderChildren(ref ControlRenderArguments args)
+        {
+
+        }
+
+        protected internal virtual void PostRenderChildren(ref ControlRenderArguments args)
+        {
+
+        }
+
+        protected internal virtual void RenderChildOverride(ref ControlRenderArguments args, int childIndex, Vector2i position)
+        {
+            RenderControl(ref args, childIndex, position);
+        }
+
+        public ref struct ControlRenderArguments
+        {
+            public IRenderHandle Handle;
+            public ref int Total;
+            public Vector2i Position;
+            public Color Modulate;
+            public UIBox2i? ScissorBox;
+            public ref Matrix3 CoordinateTransform;
+        }
+
+        protected void RenderControl(ref ControlRenderArguments args, int childIndex, Vector2i position)
+        {
+            UserInterfaceManagerInternal.RenderControl(args.Handle, ref args.Total, GetChild(childIndex), position, args.Modulate, args.ScissorBox, args.CoordinateTransform);
+        }
+
         public void UpdateDraw()
         {
         }

Robust.Client/UserInterface/Controls/BaseButton.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using Robust.Client.Audio;
 using Robust.Client.ResourceManagement;
 using Robust.Shared.ContentPack;
@@ -37,8 +38,10 @@ namespace Robust.Client.UserInterface.Controls
             get => _group;
             set
             {
+                if (value?.InternalButtons.Contains(this) ?? false)
+                    return; // No work to do.
                 // Remove from old group.
-                _group?.Buttons.Remove(this);
+                _group?.InternalButtons.Remove(this);
 
                 _group = value;
 
@@ -47,11 +50,21 @@ namespace Robust.Client.UserInterface.Controls
                     return;
                 }
 
-                value.Buttons.Add(this);
+                value.InternalButtons.Add(this);
                 ToggleMode = true;
 
-                // Set us to pressed if we're the first button.
-                Pressed = value.Buttons.Count == 0;
+                if (value.IsNoneSetAllowed)
+                {
+                    // Still UNPRESS if there's another pressed button, but don't PRESS it otherwise.
+                    if (value.Pressed != this)
+                        _pressed = false;
+                }
+                else
+                {
+                    // Set us to pressed if we're the first button. Doesn't go through the setter to avoid setting off our own error check.
+                    _pressed = value.InternalButtons.Count == 1;
+                }
+                DrawModeChanged();
             }
         }
 
@@ -95,7 +108,7 @@ namespace Robust.Client.UserInterface.Controls
                     return;
                 }
 
-                if (!value && Group != null)
+                if (!value && Group is { IsNoneSetAllowed: false })
                 {
                     throw new InvalidOperationException("Cannot directly unset a grouped button. Set another button in the group instead.");
                 }
@@ -326,7 +339,7 @@ namespace Robust.Client.UserInterface.Controls
                 return;
             }
 
-            foreach (var button in _group.Buttons)
+            foreach (var button in _group.InternalButtons)
             {
                 if (button != this && button.Pressed)
                 {
@@ -440,6 +453,29 @@ namespace Robust.Client.UserInterface.Controls
     /// </remarks>
     public sealed class ButtonGroup
     {
-        internal readonly List<BaseButton> Buttons = new();
+        /// <summary>
+        /// Whether it is legal for this button group to have no selected button.
+        /// </summary>
+        /// <remarks>
+        /// If true, it's legal for no button in the group to be active.
+        /// This is then the initial state of a new group of buttons (no button is automatically selected),
+        /// and it becomes legal to manually clear the active button through code.
+        /// The user cannot manually unselect the active button regardless, only by selecting a difference button.
+        /// </remarks>
+        public bool IsNoneSetAllowed { get; }
+
+        /// <summary>
+        /// Create a new <see cref="ButtonGroup"/>
+        /// </summary>
+        /// <param name="isNoneSetAllowed">The value of <see cref="IsNoneSetAllowed"/> on the new button group.</param>
+        public ButtonGroup(bool isNoneSetAllowed = true)
+        {
+            IsNoneSetAllowed = isNoneSetAllowed;
+        }
+
+        internal readonly List<BaseButton> InternalButtons = new();
+        public IReadOnlyList<BaseButton> Buttons => InternalButtons;
+
+        public BaseButton? Pressed => InternalButtons.FirstOrDefault(x => x.Pressed);
     }
 }

Robust.Client/UserInterface/Controls/ItemList.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Collections;
 using System.Collections.Generic;
 using System.Diagnostics.Contracts;
@@ -9,6 +9,9 @@ using Robust.Shared.Input;
 using Robust.Shared.Maths;
 using Timer = Robust.Shared.Timing.Timer;
 
+/// <summary>
+/// Represents a scrollable list of items in a user interface.
+/// </summary>
 namespace Robust.Client.UserInterface.Controls
 {
     [Virtual]
@@ -29,6 +32,10 @@ namespace Robust.Client.UserInterface.Controls
         public const string StylePropertySelectedItemBackground = "selected-item-background";
         public const string StylePropertyDisabledItemBackground = "disabled-item-background";
 
+        /// <summary>
+        /// Gets or sets the ItemSeparation of individual list items
+        /// </summary>
+        public int ItemSeparation { get; set; } = 0; // Default value is 0px
         public int Count => _itemList.Count;
         public bool IsReadOnly => false;
 
@@ -68,8 +75,10 @@ namespace Robust.Client.UserInterface.Controls
                 itemHeight += ActualItemBackground.MinimumSize.Y * UIScale;
 
                 _totalContentHeight += (int)Math.Ceiling(itemHeight);
+                _totalContentHeight += ItemSeparation;
             }
-
+            //Remove unneeded ItemSeparation on last item.
+            _totalContentHeight -= ItemSeparation;
             _scrollBar.MaxValue = Math.Max(_scrollBar.Page, _totalContentHeight);
             _updateScrollbarVisibility();
         }
@@ -390,6 +399,9 @@ namespace Robust.Client.UserInterface.Controls
                 }
 
                 offset += itemHeight;
+
+                // Add a ItemSeparation at the bottom of each item.
+                offset += ItemSeparation;
             }
         }
 
@@ -399,7 +411,7 @@ namespace Robust.Client.UserInterface.Controls
 
             var color = ActualFontColor;
             var offsetY = (int) (box.Height - font.GetHeight(UIScale)) / 2;
-            var baseLine = new Vector2i(0, offsetY + font.GetAscent(UIScale)) + box.TopLeft;
+            var baseLine = new Vector2i(5, offsetY + font.GetAscent(UIScale)) + box.TopLeft;
 
             foreach (var rune in text.EnumerateRunes())
             {

Robust.Client/UserInterface/Controls/OptionButton.cs

@@ -12,6 +12,7 @@ namespace Robust.Client.UserInterface.Controls
     public class OptionButton : ContainerButton
     {
         public const string StyleClassOptionButton = "optionButton";
+        public const string StyleClassPopup = "optionButtonPopup";
         public const string StyleClassOptionTriangle = "optionTriangle";
         public readonly ScrollContainer OptionsScroll;
 
@@ -74,7 +75,8 @@ namespace Robust.Client.UserInterface.Controls
 
             _popup = new Popup()
             {
-                Children = { OptionsScroll }
+                Children = { new PanelContainer(), OptionsScroll },
+                StyleClasses = { StyleClassPopup }
             };
             _popup.OnPopupHide += OnPopupHide;
 
@@ -99,6 +101,11 @@ namespace Robust.Client.UserInterface.Controls
             AddItem(label, id);
         }
 
+        public virtual void ButtonOverride(Button button)
+        {
+
+        }
+
         public void AddItem(string label, int? id = null)
         {
             if (id == null)
@@ -132,6 +139,8 @@ namespace Robust.Client.UserInterface.Controls
             {
                 Select(0);
             }
+
+            ButtonOverride(button);
         }
 
         private void TogglePopup(bool show)
@@ -139,6 +148,8 @@ namespace Robust.Client.UserInterface.Controls
             if (show)
             {
                 var globalPos = GlobalPosition;
+                globalPos.Y += Size.Y + 1; // Place it below us, with a safety margin.
+                globalPos.Y -= Margin.SumVertical;
                 OptionsScroll.Measure(Window?.Size ?? Vector2Helpers.Infinity);
                 var (minX, minY) = OptionsScroll.DesiredSize;
                 var box = UIBox2.FromDimensions(globalPos, new Vector2(Math.Max(minX, Width), minY));

Robust.Client/UserInterface/Controls/PanelContainer.cs

@@ -15,13 +15,13 @@ namespace Robust.Client.UserInterface.Controls
         {
             base.Draw(handle);
 
-            var style = _getStyleBox();
+            var style = GetStyleBox();
             style?.Draw(handle, PixelSizeBox, UIScale);
         }
 
         protected override Vector2 MeasureOverride(Vector2 availableSize)
         {
-            var styleSize = _getStyleBox()?.MinimumSize ?? Vector2.Zero;
+            var styleSize = GetStyleBox()?.MinimumSize ?? Vector2.Zero;
             var measureSize = Vector2.Max(availableSize - styleSize, Vector2.Zero);
             var childSize = Vector2.Zero;
             foreach (var child in Children)
@@ -36,7 +36,7 @@ namespace Robust.Client.UserInterface.Controls
         protected override Vector2 ArrangeOverride(Vector2 finalSize)
         {
             var ourSize = UIBox2.FromDimensions(Vector2.Zero, finalSize);
-            var contentBox = _getStyleBox()?.GetContentBox(ourSize, 1) ?? ourSize;
+            var contentBox = GetStyleBox()?.GetContentBox(ourSize, 1) ?? ourSize;
 
             foreach (var child in Children)
             {
@@ -47,7 +47,7 @@ namespace Robust.Client.UserInterface.Controls
         }
 
         [System.Diagnostics.Contracts.Pure]
-        private StyleBox? _getStyleBox()
+        protected StyleBox? GetStyleBox()
         {
             if (PanelOverride != null)
             {

Robust.Client/UserInterface/Controls/TextEdit.cs

@@ -90,6 +90,8 @@ public sealed class TextEdit : Control
     internal bool DebugOverlay;
     private Vector2? _lastDebugMousePos;
 
+    public event Action<TextEditEventArgs>? OnTextChanged;
+
     public TextEdit()
     {
         IoCManager.InjectDependencies(this);
@@ -315,7 +317,7 @@ public sealed class TextEdit : Control
                 if (changed)
                 {
                     _selectionStart = _cursorPosition;
-                    // OnTextChanged?.Invoke(new LineEditEventArgs(this, _text));
+                    OnTextChanged?.Invoke(new TextEditEventArgs(this, _textRope));
                     // _updatePseudoClass();
                     // OnBackspace?.Invoke(new LineEditBackspaceEventArgs(oldText, _text, cursor, selectStart));
                 }
@@ -349,7 +351,7 @@ public sealed class TextEdit : Control
                 if (changed)
                 {
                     _selectionStart = _cursorPosition;
-                    // OnTextChanged?.Invoke(new LineEditEventArgs(this, _text));
+                    OnTextChanged?.Invoke(new TextEditEventArgs(this, _textRope));
                     // _updatePseudoClass();
                 }
 
@@ -382,7 +384,10 @@ public sealed class TextEdit : Control
                 }
 
                 if (changed)
+                {
                     _selectionStart = _cursorPosition;
+                    OnTextChanged?.Invoke(new TextEditEventArgs(this, _textRope));
+                }
 
                 InvalidateHorizontalCursorPos();
                 args.Handle();
@@ -411,7 +416,10 @@ public sealed class TextEdit : Control
                 }
 
                 if (changed)
+                {
                     _selectionStart = _cursorPosition;
+                    OnTextChanged?.Invoke(new TextEditEventArgs(this, _textRope));
+                }
 
                 InvalidateHorizontalCursorPos();
                 args.Handle();
@@ -748,6 +756,7 @@ public sealed class TextEdit : Control
 
             var startPos = _cursorPosition;
             TextRope = Rope.Insert(TextRope, startPos.Index, ev.Text);
+            OnTextChanged?.Invoke(new TextEditEventArgs(this, _textRope));
 
             _selectionStart = _cursorPosition = new CursorPos(startPos.Index + startChars, LineBreakBias.Top);
             _imeData = (startPos, ev.Text.Length);
@@ -844,6 +853,7 @@ public sealed class TextEdit : Control
         var upper = SelectionUpper.Index;
 
         TextRope = Rope.ReplaceSubstring(TextRope, lower, upper - lower, text);
+        OnTextChanged?.Invoke(new TextEditEventArgs(this, _textRope));
 
         _selectionStart = _cursorPosition = new CursorPos(lower + text.Length, LineBreakBias.Top);
         // OnTextChanged?.Invoke(new LineEditEventArgs(this, _text));
@@ -1441,6 +1451,12 @@ public sealed class TextEdit : Control
         AbortIme(delete: false);
     }
 
+    public sealed class TextEditEventArgs(TextEdit control, Rope.Node textRope) : EventArgs
+    {
+        public TextEdit Control { get; } = control;
+        public Rope.Node TextRope { get; } = textRope;
+    }
+
     /// <summary>
     /// Specifies which line the cursor is positioned at when on a word-wrapping break.
     /// </summary>

Robust.Client/UserInterface/CustomControls/DebugConsole.xaml.cs

@@ -39,7 +39,7 @@ namespace Robust.Client.UserInterface.CustomControls
     // And also if Update() stops firing due to an exception loop the console will still work.
     // (At least from the main thread, which is what's throwing the exceptions..)
     [GenerateTypedNameReferences]
-    public sealed partial class DebugConsole : Control, IDebugConsoleView, IPostInjectInit
+    public sealed partial class DebugConsole : Control, IDebugConsoleView
     {
         [Dependency] private readonly IClientConsoleHost _consoleHost = default!;
         [Dependency] private readonly IResourceManager _resourceManager = default!;
@@ -49,7 +49,7 @@ namespace Robust.Client.UserInterface.CustomControls
         private static readonly ResPath HistoryPath = new("/debug_console_history.json");
 
         private readonly ConcurrentQueue<FormattedMessage> _messageQueue = new();
-        private ISawmill _logger = default!;
+        private readonly ISawmill _logger;
 
         public DebugConsole()
         {
@@ -57,6 +57,8 @@ namespace Robust.Client.UserInterface.CustomControls
 
             IoCManager.InjectDependencies(this);
 
+            _logger = _logMan.GetSawmill("dbgconsole");
+
             InitCompletions();
 
             CommandBar.OnTextChanged += OnCommandChanged;
@@ -282,10 +284,5 @@ namespace Robust.Client.UserInterface.CustomControls
                 }
             });
         }
-
-        void IPostInjectInit.PostInject()
-        {
-            _logger = _logMan.GetSawmill("dbgconsole");
-        }
     }
 }

Robust.Client/UserInterface/IUserInterfaceManagerInternal.cs

@@ -61,6 +61,9 @@ namespace Robust.Client.UserInterface
         Vector2? CalcRelativeMousePositionFor(Control control, ScreenCoordinates mousePos);
 
         Color GetMainClearColor();
+
+        void RenderControl(IRenderHandle renderHandle, ref int total, Control control, Vector2i position, Color modulate,
+            UIBox2i? scissorBox, Matrix3 coordinateTransform);
     }
 }
 

Robust.Client/UserInterface/UserInterfaceManager.Layout.cs

@@ -132,9 +132,10 @@ internal sealed partial class UserInterfaceManager
             try
             {
                 var total = 0;
-                _render(renderHandle, ref total, root, Vector2i.Zero, Color.White, null);
                 var drawingHandle = renderHandle.DrawingHandleScreen;
-                drawingHandle.SetTransform(Vector2.Zero, Angle.Zero, Vector2.One);
+                drawingHandle.SetTransform(Matrix3.Identity);
+                RenderControl(renderHandle, ref total, root, Vector2i.Zero, Color.White, null, Matrix3.Identity);
+                drawingHandle.SetTransform(Matrix3.Identity);
                 OnPostDrawUIRoot?.Invoke(new PostDrawUIRootEventArgs(root, drawingHandle));
 
                 _prof.WriteValue("Controls rendered", ProfData.Int32(total));

Robust.Client/UserInterface/UserInterfaceManager.cs

@@ -75,7 +75,7 @@ namespace Robust.Client.UserInterface
 
                 foreach (var root in _roots)
                 {
-                    if (root.Stylesheet != null)
+                    if (root.Stylesheet == null)
                     {
                         root.StylesheetUpdateRecursive();
                     }
@@ -329,8 +329,8 @@ namespace Robust.Client.UserInterface
             }
         }
 
-        private void _render(IRenderHandle renderHandle, ref int total, Control control, Vector2i position, Color modulate,
-            UIBox2i? scissorBox)
+        public void RenderControl(IRenderHandle renderHandle, ref int total, Control control, Vector2i position, Color modulate,
+            UIBox2i? scissorBox, Matrix3 coordinateTransform)
         {
             if (!control.Visible)
             {
@@ -377,7 +377,10 @@ namespace Robust.Client.UserInterface
             total += 1;
 
             var handle = renderHandle.DrawingHandleScreen;
-            handle.SetTransform(position, Angle.Zero, Vector2.One);
+            var oldXform = handle.GetTransform();
+            var xform = oldXform;
+            xform.Multiply(Matrix3.CreateTransform(position, Angle.Zero, Vector2.One));
+            handle.SetTransform(xform);
             modulate *= control.Modulate;
 
             if (_rendering || control.AlwaysRender)
@@ -389,16 +392,32 @@ namespace Robust.Client.UserInterface
                 handle.Modulate = oldMod;
                 handle.UseShader(null);
             }
+            handle.SetTransform(oldXform);
+            var args = new Control.ControlRenderArguments()
+            {
+                Handle = renderHandle,
+                Total = ref total,
+                Modulate = modulate,
+                ScissorBox = scissorRegion,
+                CoordinateTransform = ref coordinateTransform
+            };
+
+            control.PreRenderChildren(ref args);
 
             foreach (var child in control.Children)
             {
-                _render(renderHandle, ref total, child, position + child.PixelPosition, modulate, scissorRegion);
+                var pos = position + (Vector2i) coordinateTransform.Transform(child.PixelPosition);
+                control.RenderChildOverride(ref args, child.GetPositionInParent(), pos);
             }
 
+            control.PostRenderChildren(ref args);
+
             if (clip)
             {
                 renderHandle.SetScissor(scissorBox);
             }
+
+            handle.SetTransform(oldXform);
         }
 
         public Color GetMainClearColor() => RootControl.ActualBgColor;

Robust.Packaging/AssetProcessing/Passes/AssetPassPackRsis.cs

@@ -4,6 +4,7 @@ using Robust.Shared.Resources;
 using Robust.Shared.Utility;
 using SixLabors.ImageSharp;
 using SixLabors.ImageSharp.Formats.Png;
+using SixLabors.ImageSharp.Formats.Png.Chunks;
 using SixLabors.ImageSharp.PixelFormats;
 
 namespace Robust.Packaging.AssetProcessing.Passes;
@@ -168,7 +169,7 @@ internal sealed class AssetPassPackRsis : AssetPass
         }
 
         var ms = new MemoryStream();
-        sheet.Metadata.GetPngMetadata().TextData.Add(new PngTextData("Description", metaJson, null, null));
+        sheet.Metadata.GetPngMetadata().TextData.Add(new PngTextData("Description", metaJson, "", ""));
         sheet.SaveAsPng(ms);
 
         sheet.Dispose();

Robust.Packaging/Robust.Packaging.csproj

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

Robust.Physics/Robust.Physics.csproj

@@ -1,22 +0,0 @@
-<Project Sdk="Microsoft.NET.Sdk">
-  <Import Project="..\MSBuild\Robust.Engine.props" />
-  <PropertyGroup>
-
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">
-    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <DefineConstants>DEBUG;TRACE</DefineConstants>
-  </PropertyGroup>
-
-  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|AnyCPU'">
-    <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
-    <DefineConstants>TRACE;RELEASE</DefineConstants>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <ProjectReference Include="..\Robust.Shared.Maths\Robust.Shared.Maths.csproj" />
-  </ItemGroup>
-
-  <Import Project="..\MSBuild\Robust.Properties.targets" />
-</Project>

Robust.Serialization.Generator/Robust.Serialization.Generator.csproj

@@ -4,12 +4,13 @@
     <TargetFramework>netstandard2.0</TargetFramework>
     <LangVersion>11</LangVersion>
     <Nullable>enable</Nullable>
+    <ManagePackageVersionsCentrally>true</ManagePackageVersionsCentrally>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.CodeAnalysis.Common" Version="4.4.0" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" Version="4.4.0" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" Version="4.4.0" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Common" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.CSharp" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.CodeAnalysis.Workspaces.Common" />
   </ItemGroup>
 
 </Project>

Robust.Server/Console/Commands/ProfileEntitySpawningCommand.cs

@@ -43,6 +43,7 @@ public sealed class ProfileEntitySpawningCommand : IConsoleCommand
 
         GC.Collect();
 
+        Span<EntityUid> ents = stackalloc EntityUid[amount];
         var stopwatch = new Stopwatch();
         stopwatch.Start();
 
@@ -50,12 +51,17 @@ public sealed class ProfileEntitySpawningCommand : IConsoleCommand
 
         for (var i = 0; i < amount; i++)
         {
-            _entities.SpawnEntity(prototype, MapCoordinates.Nullspace);
+            ents[i] = _entities.SpawnEntity(prototype, MapCoordinates.Nullspace);
         }
 
         MeasureProfiler.SaveData();
 
         shell.WriteLine($"Server: Profiled spawning {amount} entities in {stopwatch.Elapsed.TotalMilliseconds:N3} ms");
+
+        foreach (var ent in ents)
+        {
+            _entities.DeleteEntity(ent);
+        }
     }
 }
 #endif

Robust.Server/Console/ServerConsoleHost.cs

@@ -259,6 +259,9 @@ namespace Robust.Server.Console
             }
 
             done:
+
+            result ??= CompletionResult.Empty;
+
             var msg = new MsgConCompletionResp
             {
                 Result = result,

Robust.Server/DataMetrics/MetricsManager.MetricsServer.cs

@@ -19,13 +19,15 @@ internal sealed partial class MetricsManager
     {
         private readonly ISawmill _sawmill;
         private readonly HttpListener _listener;
+        private readonly CollectorRegistry _registry;
 
         public ManagedHttpListenerMetricsServer(ISawmill sawmill, string host, int port, string url = "metrics/",
-            CollectorRegistry? registry = null) : base(registry)
+            CollectorRegistry? registry = null)
         {
             _sawmill = sawmill;
             _listener = new HttpListener();
             _listener.Prefixes.Add($"http://{host}:{port}/{url}");
+            _registry = registry ?? Metrics.DefaultRegistry;
         }
 
         protected override Task StartServer(CancellationToken cancel)

Robust.Server/GameObjects/EntitySystems/MapLoaderSystem.cs

@@ -1211,7 +1211,7 @@ public sealed class MapLoaderSystem : EntitySystem
                     // information that needs to be written.
                     if (compMapping.Children.Count != 0 || protMapping == null)
                     {
-                        compMapping.Add("type", new ValueDataNode(compName));
+                        compMapping.InsertAt(0, "type", new ValueDataNode(compName));
                         // Something actually got written!
                         components.Add(compMapping);
                     }

Robust.Server/GameObjects/EntitySystems/MapSystem.cs

@@ -28,7 +28,7 @@ namespace Robust.Server.GameObjects
             base.Initialize();
             SubscribeLocalEvent<MapGridComponent, EmptyGridEvent>(HandleGridEmpty);
 
-            _cfg.OnValueChanged(CVars.GameDeleteEmptyGrids, SetGridDeletion, true);
+            Subs.CVar(_cfg, CVars.GameDeleteEmptyGrids, SetGridDeletion, true);
         }
 
         protected override void OnMapAdd(EntityUid uid, MapComponent component, ComponentAdd args)
@@ -64,13 +64,6 @@ namespace Robust.Server.GameObjects
             return !(grid.GetAllTiles().Any());
         }
 
-        public override void Shutdown()
-        {
-            base.Shutdown();
-
-            _cfg.UnsubValueChanged(CVars.GameDeleteEmptyGrids, SetGridDeletion);
-        }
-
         private void HandleGridEmpty(EntityUid uid, MapGridComponent component, EmptyGridEvent args)
         {
             if (!_deleteEmptyGrids || TerminatingOrDeleted(uid) || HasComp<MapComponent>(uid))

Robust.Server/GameObjects/EntitySystems/PhysicsSystem.cs

@@ -20,7 +20,8 @@ namespace Robust.Server.GameObjects
         {
             base.Initialize();
             LoadMetricCVar();
-            _configurationManager.OnValueChanged(CVars.MetricsEnabled, _ => LoadMetricCVar());
+
+            Subs.CVar(_configurationManager, CVars.MetricsEnabled, _ => LoadMetricCVar());
         }
 
         private void LoadMetricCVar()

Robust.Server/GameStates/PvsSystem.Ack.cs

@@ -3,6 +3,8 @@ using System.Collections.Generic;
 using System.Runtime.InteropServices;
 using System.Threading;
 using Prometheus;
+using Robust.Shared.Enums;
+using Robust.Shared.Log;
 using Robust.Shared.Player;
 using Robust.Shared.Threading;
 using Robust.Shared.Timing;
@@ -43,7 +45,8 @@ internal sealed partial class PvsSystem
 
         foreach (var session in PendingAcks)
         {
-            _toAck.Add(GetOrNewPvsSession(session));
+            if (session.Status != SessionStatus.Disconnected)
+                _toAck.Add(GetOrNewPvsSession(session));
         }
 
         PendingAcks.Clear();
@@ -66,7 +69,14 @@ internal sealed partial class PvsSystem
 
         public void Execute(int index)
         {
-            _pvs.ProcessQueuedAck(_pvs._toAck[index]);
+            try
+            {
+                _pvs.ProcessQueuedAck(_pvs._toAck[index]);
+            }
+            catch (Exception e)
+            {
+                _pvs.Log.Log(LogLevel.Error, e, $"Caught exception while processing PVS acks.");
+            }
         }
     }
 
@@ -78,7 +88,14 @@ internal sealed partial class PvsSystem
 
         public void Execute(int index)
         {
-            _pvs.UpdateDirtyChunks(index);
+            try
+            {
+                _pvs.UpdateDirtyChunks(index);
+            }
+            catch (Exception e)
+            {
+                _pvs.Log.Log(LogLevel.Error, e, $"Caught exception while updating dirty PVS chunks.");
+            }
         }
     }
 

Robust.Server/GameStates/PvsSystem.Leave.cs

@@ -3,6 +3,7 @@ using System.Runtime.InteropServices;
 using System.Threading;
 using Prometheus;
 using Robust.Shared.Enums;
+using Robust.Shared.Log;
 using Robust.Shared.Network.Messages;
 using Robust.Shared.Player;
 using Robust.Shared.Threading;
@@ -77,7 +78,14 @@ internal sealed partial class PvsSystem
 
         public void Execute(int index)
         {
-            _pvs.ProcessLeavePvs(_sessions[index]);
+            try
+            {
+                _pvs.ProcessLeavePvs(_sessions[index]);
+            }
+            catch (Exception e)
+            {
+                _pvs.Log.Log(LogLevel.Error, e, $"Caught exception while processing pvs-leave messages.");
+            }
         }
 
         public void Setup(ICommonSession[] sessions)

Robust.Server/GameStates/PvsSystem.Session.cs

@@ -24,6 +24,8 @@ internal sealed partial class PvsSystem
 
     internal readonly Dictionary<ICommonSession, PvsSession> PlayerData = new();
 
+    private List<ICommonSession> _disconnected = new();
+
     private void SendStateUpdate(ICommonSession session, PvsThreadResources resources)
     {
         var data = GetOrNewPvsSession(session);
@@ -174,13 +176,8 @@ internal sealed partial class PvsSystem
 
     private void OnPlayerStatusChanged(object? sender, SessionStatusEventArgs e)
     {
-        if (e.NewStatus != SessionStatus.Disconnected)
-            return;
-
-        if (!PlayerData.Remove(e.Session, out var session))
-            return;
-
-        ClearSendHistory(session);
+        if (e.NewStatus == SessionStatus.Disconnected)
+            _disconnected.Add(e.Session);
     }
 
     private void ClearSendHistory(PvsSession session)
@@ -196,5 +193,6 @@ internal sealed partial class PvsSystem
 
         session.PreviouslySent.Clear();
         session.LastSent = null;
+        session.Entities.Clear();
     }
 }

Robust.Server/GameStates/PvsSystem.ToSendSet.cs

@@ -24,7 +24,7 @@ internal sealed partial class PvsSystem
     }
 
     /// <summary>
-    /// A chunks that is visible to a player and add entities to the game-state.
+    /// Add all entities on a given PVS chunk to a clients game-state.
     /// </summary>
     private void AddPvsChunk(PvsChunk chunk, float distance, PvsSession session)
     {
@@ -48,17 +48,28 @@ internal sealed partial class PvsSystem
         // We add chunk-size here so that its consistent with the normal PVS range setting.
         // I.e., distance here is the Chebyshev distance to the centre of each chunk, but the normal pvs range only
         // required that the chunk be touching the box, not the centre.
-        var count = distance < (_lowLodDistance + ChunkSize) / 2
+        var limit = distance < (_lowLodDistance + ChunkSize) / 2
             ? chunk.Contents.Count
             : chunk.LodCounts[0];
 
+        // If the PVS budget is exceeded, it should still be safe to send all of the chunk's direct children, though
+        // after that we have no guarantee that an entity's parent got sent.
+        var directChildren = Math.Min(limit, chunk.LodCounts[2]);
+
         // Send entities on the chunk.
         var span = CollectionsMarshal.AsSpan(chunk.Contents);
-        for (var i = 0; i < count; i++)
+        for (var i = 0; i < limit; i++)
         {
             var ent = span[i];
-            if ((mask & ent.Comp.VisibilityMask) == ent.Comp.VisibilityMask)
-                AddEntity(session, ent, fromTick);
+            if ((mask & ent.Comp.VisibilityMask) != ent.Comp.VisibilityMask)
+                continue;
+
+            // TODO PVS improve this somehow
+            // Having entities "leave" pvs view just because the pvs entry budget was exceeded sucks.
+            // This probably requires changing client game state manager to support receiving entities with unknown parents.
+            // Probably needs to do something similar to pending net entity states, but for entity spawning.
+            if (!AddEntity(session, ent, fromTick))
+                limit = directChildren;
         }
     }
 

Robust.Server/GameStates/PvsSystem.cs

@@ -126,11 +126,12 @@ internal sealed partial class PvsSystem : EntitySystem
         _playerManager.PlayerStatusChanged += OnPlayerStatusChanged;
         _transform.OnGlobalMoveEvent += OnEntityMove;
 
-        _configManager.OnValueChanged(CVars.NetPVS, SetPvs, true);
-        _configManager.OnValueChanged(CVars.NetMaxUpdateRange, OnViewsizeChanged, true);
-        _configManager.OnValueChanged(CVars.NetLowLodRange, OnLodChanged, true);
-        _configManager.OnValueChanged(CVars.NetForceAckThreshold, OnForceAckChanged, true);
-        _configManager.OnValueChanged(CVars.NetPvsAsync, OnAsyncChanged, true);
+        Subs.CVar(_configManager, CVars.NetPVS, SetPvs, true);
+        Subs.CVar(_configManager, CVars.NetMaxUpdateRange, OnViewsizeChanged, true);
+        Subs.CVar(_configManager, CVars.NetLowLodRange, OnLodChanged, true);
+        Subs.CVar(_configManager, CVars.NetForceAckThreshold, OnForceAckChanged, true);
+        Subs.CVar(_configManager, CVars.NetPvsAsync, OnAsyncChanged, true);
+        Subs.CVar(_configManager, CVars.NetPvsCompressLevel, ResetParallelism, true);
 
         _serverGameStateManager.ClientAck += OnClientAck;
         _serverGameStateManager.ClientRequestFull += OnClientRequestFull;
@@ -138,7 +139,6 @@ internal sealed partial class PvsSystem : EntitySystem
         InitializeDirty();
 
         _parallelMgr.ParallelCountChanged += ResetParallelism;
-        _configManager.OnValueChanged(CVars.NetPvsCompressLevel, ResetParallelism, true);
     }
 
     public override void Shutdown()
@@ -148,10 +148,6 @@ internal sealed partial class PvsSystem : EntitySystem
         _playerManager.PlayerStatusChanged -= OnPlayerStatusChanged;
         _transform.OnGlobalMoveEvent -= OnEntityMove;
 
-        _configManager.UnsubValueChanged(CVars.NetPVS, SetPvs);
-        _configManager.UnsubValueChanged(CVars.NetMaxUpdateRange, OnViewsizeChanged);
-        _configManager.UnsubValueChanged(CVars.NetForceAckThreshold, OnForceAckChanged);
-        _configManager.UnsubValueChanged(CVars.NetPvsCompressLevel, ResetParallelism);
         _parallelMgr.ParallelCountChanged -= ResetParallelism;
 
         _serverGameStateManager.ClientAck -= OnClientAck;
@@ -252,6 +248,8 @@ internal sealed partial class PvsSystem : EntitySystem
 
     private void ForceFullState(PvsSession session)
     {
+        _leaveTask?.WaitOne();
+        _leaveTask = null;
         session.LastReceivedAck = _gameTiming.CurTick;
         session.RequestedFull = true;
         ClearSendHistory(session);
@@ -405,6 +403,15 @@ internal sealed partial class PvsSystem : EntitySystem
         DebugTools.Assert(_chunks.Values.All(x => Exists(x.Map) && Exists(x.Root)));
         DebugTools.Assert(_chunkSets.Keys.All(Exists));
 
+        _leaveTask?.WaitOne();
+        _leaveTask = null;
+
+        foreach (var session in _disconnected)
+        {
+            if (PlayerData.Remove(session, out var pvsSession))
+                ClearSendHistory(pvsSession);
+        }
+
         var ackJob = ProcessQueuedAcks();
 
         // Figure out what chunks players can see and cache some chunk data.
@@ -415,10 +422,6 @@ internal sealed partial class PvsSystem : EntitySystem
         }
 
         ackJob?.WaitOne();
-
-        // Ensure any pvs leave tasks have finished before we get the next state & overwrite the "last sent" list.
-        _leaveTask?.WaitOne();
-        _leaveTask = null;
     }
 
     internal void CacheSessionData(ICommonSession[] players)

Robust.Server/Log/LokiLogHandler.cs

@@ -27,7 +27,7 @@ namespace Robust.Server.Log
 
             if (valid)
             {
-                message.AddOrUpdateProperty(sawmillProperty);
+                message.AddOrUpdateProperty(sawmillProperty!);
             }
 
             _sLogger.Write(message);

Robust.Server/Physics/GridFixtureSystem.Merging.cs

@@ -0,0 +1,138 @@
+using System.Collections.Generic;
+using System.Numerics;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Map;
+using Robust.Shared.Map.Components;
+using Robust.Shared.Maths;
+using Robust.Shared.Timing;
+using Robust.Shared.Utility;
+
+namespace Robust.Server.Physics;
+
+public sealed partial class GridFixtureSystem
+{
+    /*
+     * Something to keep in mind is that they rotate around the origin of a tile (e.g. 0,0), so a rotation of -90 degrees
+     * moves the origin to 0, -1.
+     */
+
+    /// <summary>
+    /// Merges GridB into GridA.
+    /// </summary>
+    /// <param name="offset">Origin of GridB relative to GridA</param>
+    /// <param name="rotation">Rotation to apply to GridB when being merged.
+    /// Note that the rotation is applied before the offset so the offset itself will be rotated.</param>
+    public void Merge(
+        EntityUid gridAUid,
+        EntityUid gridBUid,
+        Vector2i offset,
+        Angle rotation,
+        MapGridComponent? gridA = null,
+        MapGridComponent? gridB = null,
+        TransformComponent? xformA = null,
+        TransformComponent? xformB = null)
+    {
+        var matrix = Matrix3.CreateTransform(offset, rotation);
+        Merge(gridAUid, gridBUid, matrix, gridA, gridB, xformA, xformB);
+    }
+
+    /// <summary>
+    /// Merges GridB into GridA.
+    /// </summary>
+    /// <param name="offset">Origin of GridB relative to GridA</param>
+    /// <param name="matrix">Matrix to apply to gridB when being merged.
+    /// Note that rotation is applied first and then offset so the offset itself will be rotated.</param>
+    public void Merge(
+        EntityUid gridAUid,
+        EntityUid gridBUid,
+        Matrix3 matrix,
+        MapGridComponent? gridA = null,
+        MapGridComponent? gridB = null,
+        TransformComponent? xformA = null,
+        TransformComponent? xformB = null)
+    {
+        if (!Resolve(gridAUid, ref gridA, ref xformA))
+            return;
+
+        if (!Resolve(gridBUid, ref gridB, ref xformB))
+            return;
+
+        var sw = new Stopwatch();
+        var tiles = new List<(Vector2i Indices, Tile Tile)>();
+        var enumerator = _maps.GetAllTilesEnumerator(gridBUid, gridB);
+
+        while (enumerator.MoveNext(out var tileRef))
+        {
+            var offsetTile = matrix.Transform(new Vector2(tileRef.Value.GridIndices.X, tileRef.Value.GridIndices.Y) + gridA.TileSizeHalfVector);
+            tiles.Add((offsetTile.Floored(), tileRef.Value.Tile));
+        }
+
+        _maps.SetTiles(gridAUid, gridA, tiles);
+
+        enumerator = _maps.GetAllTilesEnumerator(gridBUid, gridB);
+        var rotationDiff = matrix.Rotation();
+
+        while (enumerator.MoveNext(out var tileRef))
+        {
+            var chunkOrigin = SharedMapSystem.GetChunkIndices(tileRef.Value.GridIndices, gridB.ChunkSize);
+
+            if (!_maps.TryGetChunk(gridBUid, gridB, chunkOrigin, out var chunk))
+            {
+                continue;
+            }
+
+            var chunkLocalTile = SharedMapSystem.GetChunkRelative(tileRef.Value.GridIndices, gridB.ChunkSize);
+            var snapgrid = chunk.GetSnapGrid((ushort) chunkLocalTile.X, (ushort) chunkLocalTile.Y);
+
+            if (snapgrid == null || snapgrid.Count == 0)
+                continue;
+
+            var offsetTile = matrix.Transform(new Vector2(tileRef.Value.GridIndices.X, tileRef.Value.GridIndices.Y) + gridA.TileSizeHalfVector);
+            var tileIndex = offsetTile.Floored();
+
+            for (var j = snapgrid.Count - 1; j >= 0; j--)
+            {
+                var ent = snapgrid[j];
+                var xform = _xformQuery.GetComponent(ent);
+                _xformSystem.ReAnchor(ent, xform,
+                    gridB, gridA,
+                    tileRef.Value.GridIndices, tileIndex,
+                    gridBUid, gridAUid,
+                    xformB, xformA,
+                    rotationDiff);
+
+                DebugTools.Assert(xform.ParentUid == gridAUid);
+            }
+
+            DebugTools.Assert(snapgrid.Count == 0);
+        }
+
+        enumerator = _maps.GetAllTilesEnumerator(gridBUid, gridB);
+
+        while (enumerator.MoveNext(out var tileRef))
+        {
+            var bounds = _lookup.GetLocalBounds(tileRef.Value.GridIndices, gridB.TileSize);
+
+            _entSet.Clear();
+            _lookup.GetLocalEntitiesIntersecting(gridBUid, bounds, _entSet, LookupFlags.All | ~LookupFlags.Contained | LookupFlags.Approximate);
+
+            foreach (var ent in _entSet)
+            {
+                // Consider centre of entity position maybe?
+                var entXform = _xformQuery.GetComponent(ent);
+
+                if (entXform.ParentUid != gridBUid ||
+                    !bounds.Contains(entXform.LocalPosition)) continue;
+
+                var newPos = matrix.Transform(entXform.LocalPosition);
+
+                _xformSystem.SetCoordinates(ent, entXform, new EntityCoordinates(gridAUid, newPos), entXform.LocalRotation + rotationDiff, oldParent: xformB, newParent: xformA);
+            }
+        }
+
+        DebugTools.Assert(xformB.ChildCount == 0);
+        Del(gridBUid);
+
+        Log.Debug($"Merged grids in {sw.Elapsed.TotalMilliseconds}ms");
+    }
+}

Robust.Server/Physics/GridFixtureSystem.cs

@@ -23,16 +23,16 @@ namespace Robust.Server.Physics
     /// <summary>
     /// Handles generating fixtures for MapGrids.
     /// </summary>
-    public sealed class GridFixtureSystem : SharedGridFixtureSystem
+    public sealed partial class GridFixtureSystem : SharedGridFixtureSystem
     {
         [Dependency] private readonly IMapManager _mapManager = default!;
         [Dependency] private readonly IConfigurationManager _cfg = default!;
         [Dependency] private readonly IConGroupController _conGroup = default!;
         [Dependency] private readonly EntityLookupSystem _lookup = default!;
+        [Dependency] private readonly SharedMapSystem _maps = default!;
         [Dependency] private readonly SharedPhysicsSystem _physics = default!;
         [Dependency] private readonly SharedTransformSystem _xformSystem = default!;
 
-        private ISawmill _logger = default!;
         private readonly Dictionary<EntityUid, Dictionary<Vector2i, ChunkNodeGroup>> _nodes = new();
 
         /// <summary>
@@ -47,15 +47,24 @@ namespace Robust.Server.Physics
 
         internal bool SplitAllowed = true;
 
+        private HashSet<EntityUid> _entSet = new();
+
+        private EntityQuery<MapGridComponent> _gridQuery;
+        private EntityQuery<PhysicsComponent> _bodyQuery;
+        private EntityQuery<TransformComponent> _xformQuery;
+
         public override void Initialize()
         {
             base.Initialize();
-            _logger = Logger.GetSawmill("gsplit");
+
+            _gridQuery = GetEntityQuery<MapGridComponent>();
+            _bodyQuery = GetEntityQuery<PhysicsComponent>();
+            _xformQuery = GetEntityQuery<TransformComponent>();
             SubscribeLocalEvent<GridRemovalEvent>(OnGridRemoval);
             SubscribeNetworkEvent<RequestGridNodesMessage>(OnDebugRequest);
             SubscribeNetworkEvent<StopGridNodesMessage>(OnDebugStopRequest);
 
-            _cfg.OnValueChanged(CVars.GridSplitting, SetSplitAllowed, true);
+            Subs.CVar(_cfg, CVars.GridSplitting, SetSplitAllowed, true);
         }
 
         private void SetSplitAllowed(bool value) => SplitAllowed = value;
@@ -64,7 +73,6 @@ namespace Robust.Server.Physics
         {
             base.Shutdown();
             _subscribedSessions.Clear();
-            _cfg.UnsubValueChanged(CVars.GridSplitting, SetSplitAllowed);
         }
 
         /// <summary>
@@ -197,7 +205,7 @@ namespace Robust.Server.Physics
             }
 
             _isSplitting = true;
-            _logger.Debug($"Started split check for {ToPrettyString(uid)}");
+            Log.Debug($"Started split check for {ToPrettyString(uid)}");
             var splitFrontier = new Queue<ChunkSplitNode>(4);
             var grids = new List<HashSet<ChunkSplitNode>>(1);
 
@@ -234,7 +242,7 @@ namespace Robust.Server.Physics
             // Split time
             if (grids.Count > 1)
             {
-                _logger.Info($"Splitting {ToPrettyString(uid)} into {grids.Count} grids.");
+                Log.Info($"Splitting {ToPrettyString(uid)} into {grids.Count} grids.");
                 var sw = new Stopwatch();
                 sw.Start();
 
@@ -244,13 +252,10 @@ namespace Robust.Server.Physics
                     x.Sum(o => o.Indices.Count)
                         .CompareTo(y.Sum(o => o.Indices.Count)));
 
-                var xformQuery = GetEntityQuery<TransformComponent>();
-                var bodyQuery = GetEntityQuery<PhysicsComponent>();
-                var gridQuery = GetEntityQuery<MapGridComponent>();
-                var oldGridXform = xformQuery.GetComponent(oldGridUid);
-                var (gridPos, gridRot) = _xformSystem.GetWorldPositionRotation(oldGridXform, xformQuery);
-                var mapBody = bodyQuery.GetComponent(oldGridUid);
-                var oldGridComp = gridQuery.GetComponent(oldGridUid);
+                var oldGridXform = _xformQuery.GetComponent(oldGridUid);
+                var (gridPos, gridRot) = _xformSystem.GetWorldPositionRotation(oldGridXform);
+                var mapBody = _bodyQuery.GetComponent(oldGridUid);
+                var oldGridComp = _gridQuery.GetComponent(oldGridUid);
                 var newGrids = new EntityUid[grids.Count - 1];
                 var mapId = oldGridXform.MapID;
 
@@ -259,17 +264,17 @@ namespace Robust.Server.Physics
                     var group = grids[i];
                     var newGrid = _mapManager.CreateGridEntity(mapId);
                     var newGridUid = newGrid.Owner;
-                    var newGridXform = xformQuery.GetComponent(newGridUid);
+                    var newGridXform = _xformQuery.GetComponent(newGridUid);
                     newGrids[i] = newGridUid;
 
                     // Keep same origin / velocity etc; this makes updating a lot faster and easier.
                     _xformSystem.SetWorldPosition(newGridXform, gridPos);
-                    _xformSystem.SetWorldPositionRotation(newGridXform, gridPos, gridRot);
-                    var splitBody = bodyQuery.GetComponent(newGridUid);
+                    _xformSystem.SetWorldPositionRotation(newGridUid, gridPos, gridRot, newGridXform);
+                    var splitBody = _bodyQuery.GetComponent(newGridUid);
                     _physics.SetLinearVelocity(newGridUid, mapBody.LinearVelocity, body: splitBody);
                     _physics.SetAngularVelocity(newGridUid, mapBody.AngularVelocity, body: splitBody);
 
-                    var gridComp = gridQuery.GetComponent(newGridUid);
+                    var gridComp = _gridQuery.GetComponent(newGridUid);
                     var tileData = new List<(Vector2i GridIndices, Tile Tile)>(group.Sum(o => o.Indices.Count));
 
                     // Gather all tiles up front and set once to minimise fixture change events
@@ -284,7 +289,7 @@ namespace Robust.Server.Physics
                         }
                     }
 
-                    newGrid.Comp.SetTiles(tileData);
+                    _maps.SetTiles(newGrid.Owner, newGrid.Comp, tileData);
                     DebugTools.Assert(_mapManager.IsGrid(newGridUid), "A split grid had no tiles?");
 
                     // Set tiles on new grid + update anchored entities
@@ -303,8 +308,13 @@ namespace Robust.Server.Physics
                             for (var j = snapgrid.Count - 1; j >= 0; j--)
                             {
                                 var ent = snapgrid[j];
-                                var xform = xformQuery.GetComponent(ent);
-                                _xformSystem.ReAnchor(ent, xform, oldGridComp, gridComp, tilePos, oldGridUid, newGridUid, oldGridXform, newGridXform, xformQuery);
+                                var xform = _xformQuery.GetComponent(ent);
+                                _xformSystem.ReAnchor(ent, xform,
+                                    oldGridComp, gridComp,
+                                    tilePos, tilePos,
+                                    oldGridUid, newGridUid,
+                                    oldGridXform, newGridXform,
+                                    Angle.Zero);
                                 DebugTools.Assert(xform.Anchored);
                             }
                         }
@@ -317,15 +327,18 @@ namespace Robust.Server.Physics
                             var tilePos = offset + tile;
                             var bounds = _lookup.GetLocalBounds(tilePos, oldGrid.TileSize);
 
-                            foreach (var ent in _lookup.GetEntitiesIntersecting(oldGridUid, tilePos, 0f, LookupFlags.Dynamic | LookupFlags.Sundries))
+                            _entSet.Clear();
+                            _lookup.GetLocalEntitiesIntersecting(oldGridUid, tilePos, _entSet, 0f, LookupFlags.All | ~LookupFlags.Uncontained | LookupFlags.Approximate);
+
+                            foreach (var ent in _entSet)
                             {
                                 // Consider centre of entity position maybe?
-                                var entXform = xformQuery.GetComponent(ent);
+                                var entXform = _xformQuery.GetComponent(ent);
 
                                 if (entXform.ParentUid != oldGridUid ||
                                     !bounds.Contains(entXform.LocalPosition)) continue;
 
-                                _xformSystem.SetParent(ent, entXform, newGridUid, xformQuery, newGridXform);
+                                _xformSystem.SetParent(ent, entXform, newGridUid, _xformQuery, newGridXform);
                             }
                         }
 
@@ -365,10 +378,10 @@ namespace Robust.Server.Physics
                 var ev = new GridSplitEvent(newGrids, oldGridUid);
                 RaiseLocalEvent(uid, ref ev, true);
 
-                _logger.Debug($"Split {grids.Count} grids in {sw.Elapsed}");
+                Log.Debug($"Split {grids.Count} grids in {sw.Elapsed}");
             }
 
-            _logger.Debug($"Stopped split check for {ToPrettyString(uid)}");
+            Log.Debug($"Stopped split check for {ToPrettyString(uid)}");
             _isSplitting = false;
             SendNodeDebug(oldGridUid);
         }

Robust.Server/Physics/MergeGridsCommand.cs

@@ -0,0 +1,69 @@
+using Robust.Shared.Console;
+using Robust.Shared.GameObjects;
+using Robust.Shared.IoC;
+using Robust.Shared.Localization;
+using Robust.Shared.Map.Components;
+using Robust.Shared.Maths;
+using Robust.Shared.Toolshed;
+
+namespace Robust.Server.Physics;
+
+public sealed class MergeGridsCommand : LocalizedCommands
+{
+    [Dependency] private readonly IEntityManager _entManager = default!;
+
+    public override string Command => "merge_grids";
+
+    public override void Execute(IConsoleShell shell, string argStr, string[] args)
+    {
+        if (args.Length < 4)
+        {
+            return;
+        }
+
+        if (!NetEntity.TryParse(args[0], out var gridANet) ||
+            !NetEntity.TryParse(args[1], out var gridBNet))
+        {
+            return;
+        }
+
+        var gridAUid = _entManager.GetEntity(gridANet);
+        var gridBUid = _entManager.GetEntity(gridBNet);
+
+        if (!_entManager.TryGetComponent<MapGridComponent>(gridAUid, out var gridA) ||
+            !_entManager.TryGetComponent<MapGridComponent>(gridBUid, out var gridB))
+        {
+            return;
+        }
+
+        if (!int.TryParse(args[2], out var x) ||
+            !int.TryParse(args[3], out var y))
+        {
+            return;
+        }
+
+        Angle rotation = Angle.Zero;
+
+        if (args.Length >= 5 && int.TryParse(args[4], out var rotationInt))
+        {
+            rotation = Angle.FromDegrees(rotationInt);
+        }
+
+        var offset = new Vector2i(x, y);
+        var fixtureSystem = _entManager.System<GridFixtureSystem>();
+        fixtureSystem.Merge(gridAUid, gridBUid, offset, rotation, gridA: gridA, gridB: gridB);
+    }
+
+    public override CompletionResult GetCompletion(IConsoleShell shell, string[] args)
+    {
+        return args.Length switch
+        {
+            1 => CompletionResult.FromHintOptions(CompletionHelper.Components<MapGridComponent>(args[0], _entManager), Loc.GetString("cmd-merge_grids-hintA")),
+            2 => CompletionResult.FromHintOptions(CompletionHelper.Components<MapGridComponent>(args[1], _entManager), Loc.GetString("cmd-merge_grids-hintB")),
+            3 => CompletionResult.FromHint(Loc.GetString("cmd-merge_grids-xOffset")),
+            4 => CompletionResult.FromHint(Loc.GetString("cmd-merge_grids-yOffset")),
+            5 => CompletionResult.FromHint(Loc.GetString("cmd-merge_grids-angle")),
+            _ => CompletionResult.Empty
+        };
+    }
+}

Robust.Server/Placement/PlacementManager.cs

@@ -255,7 +255,7 @@ namespace Robust.Server.Placement
         /// </summary>
         public void SendPlacementBegin(EntityUid mob, int range, string objectType, string alignOption)
         {
-            if (!_entityManager.TryGetComponent<ActorComponent?>(mob, out var actor))
+            if (!_entityManager.TryGetComponent(mob, out ActorComponent? actor))
                 return;
 
             var playerConnection = actor.PlayerSession.Channel;
@@ -276,7 +276,7 @@ namespace Robust.Server.Placement
         /// </summary>
         public void SendPlacementBeginTile(EntityUid mob, int range, string tileType, string alignOption)
         {
-            if (!_entityManager.TryGetComponent<ActorComponent?>(mob, out var actor))
+            if (!_entityManager.TryGetComponent(mob, out ActorComponent? actor))
                 return;
 
             var playerConnection = actor.PlayerSession.Channel;
@@ -297,7 +297,7 @@ namespace Robust.Server.Placement
         /// </summary>
         public void SendPlacementCancel(EntityUid mob)
         {
-            if (!_entityManager.TryGetComponent<ActorComponent?>(mob, out var actor))
+            if (!_entityManager.TryGetComponent(mob, out ActorComponent? actor))
                 return;
 
             var playerConnection = actor.PlayerSession.Channel;

Robust.Server/Program.cs

@@ -32,8 +32,6 @@ namespace Robust.Server
                 throw new InvalidOperationException("Cannot start twice!");
             }
 
-            GlibcBug.Check();
-
             _hasStarted = true;
 
             if (!CommandLineArgs.TryParse(args, out var parsed))

Robust.Server/Robust.Server.csproj

@@ -10,27 +10,30 @@
     <!-- Try to fix sporadic errors against Robust.Packaging, apparently?? -->
     <ValidateExecutableReferencesMatchSelfContained>false</ValidateExecutableReferencesMatchSelfContained>
     <RobustILLink>true</RobustILLink>
+    <NoWarn>CA1416</NoWarn>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="JetBrains.Annotations" Version="2021.3.0" PrivateAssets="All" />
-    <PackageReference Include="SpaceWizards.HttpListener" Version="0.1.0" PrivateAssets="compile" />
-    <PackageReference Include="Microsoft.Data.Sqlite.Core" Version="6.0.9" />
-    <PackageReference Include="SQLitePCLRaw.provider.sqlite3" Version="2.1.4" Condition="'$(UseSystemSqlite)' == 'True'" /> <!-- Cannot be private since Content.Server/Database/ServerDbManager.cs depends on SQLitePCL.raw -->
-    <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Version="2.1.4" Condition="'$(UseSystemSqlite)' != 'True'" PrivateAssets="compile" />
-    <PackageReference Include="prometheus-net" Version="4.1.1" />
-    <PackageReference Include="Serilog.Sinks.Loki" Version="4.0.0-beta3" PrivateAssets="compile" />
-    <PackageReference Include="Microsoft.Extensions.Primitives" Version="6.0.0" />
-    <PackageReference Include="prometheus-net.DotNetRuntime" Version="4.2.2" />
-    <PackageReference Include="TerraFX.Interop.Windows" Version="10.0.20348-rc2" PrivateAssets="compile" />
-    <PackageReference Include="Microsoft.Extensions.ObjectPool" Version="6.0.2" PrivateAssets="compile" />
-    <PackageReference Include="SpaceWizards.Sodium" Version="0.2.1" PrivateAssets="compile" />
-    <PackageReference Include="SharpZstd.Interop" Version="1.5.2-beta2" PrivateAssets="compile" />
-    <PackageReference Condition="'$(FullRelease)' != 'True'" Include="JetBrains.Profiler.Api" Version="1.2.0" />
-    <PackageReference Include="Microsoft.NET.ILLink.Tasks" Version="8.0.0" />
+    <PackageReference Include="JetBrains.Annotations" PrivateAssets="All" />
+    <PackageReference Include="SpaceWizards.HttpListener" PrivateAssets="compile" />
+    <PackageReference Include="Microsoft.Data.Sqlite.Core" />
+    <PackageReference Include="SQLitePCLRaw.provider.sqlite3" Condition="'$(UseSystemSqlite)' == 'True'" /> <!-- Cannot be private since Content.Server/Database/ServerDbManager.cs depends on SQLitePCL.raw -->
+    <PackageReference Include="SQLitePCLRaw.bundle_e_sqlite3" Condition="'$(UseSystemSqlite)' != 'True'" PrivateAssets="compile" />
+    <PackageReference Include="prometheus-net" />
+    <PackageReference Include="Serilog.Sinks.Loki" PrivateAssets="compile" />
+    <PackageReference Include="Microsoft.Extensions.Primitives" />
+    <!-- Needed to pull-up the dependency from prometheus-net -->
+    <PackageReference Include="Microsoft.Extensions.Logging" />
+    <PackageReference Include="Microsoft.Extensions.DependencyInjection" />
+    <PackageReference Include="prometheus-net.DotNetRuntime" />
+    <PackageReference Include="TerraFX.Interop.Windows" PrivateAssets="compile" />
+    <PackageReference Include="Microsoft.Extensions.ObjectPool" PrivateAssets="compile" />
+    <PackageReference Include="SpaceWizards.Sodium" PrivateAssets="compile" />
+    <PackageReference Include="SharpZstd.Interop" PrivateAssets="compile" />
+    <PackageReference Condition="'$(FullRelease)' != 'True'" Include="JetBrains.Profiler.Api" />
+    <PackageReference Include="Microsoft.NET.ILLink.Tasks" />
   </ItemGroup>
   <ItemGroup>
     <ProjectReference Include="..\Lidgren.Network\Lidgren.Network.csproj" />
-    <ProjectReference Include="..\Robust.Physics\Robust.Physics.csproj" />
     <ProjectReference Include="..\Robust.Shared.Maths\Robust.Shared.Maths.csproj" />
     <ProjectReference Include="..\Robust.Shared.Scripting\Robust.Shared.Scripting.csproj" />
     <ProjectReference Include="..\Robust.Shared\Robust.Shared.csproj" />

Robust.Server/Scripting/ScriptHost.cs

@@ -3,6 +3,7 @@ using System.Collections.Immutable;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Text;
+using System.Threading.Tasks;
 using JetBrains.Annotations;
 using Microsoft.CodeAnalysis;
 using Microsoft.CodeAnalysis.Completion;
@@ -294,27 +295,22 @@ namespace Robust.Server.Scripting
                 loader: TextLoader.From(TextAndVersion.Create(SourceText.From(message.Code), VersionStamp.Create()))
             ));
 
-            var results = await CompletionService
-                .GetService(document)
-                .GetCompletionsAsync(document, message.Cursor);
+            var results = await (CompletionService
+                .GetService(document)?
+                .GetCompletionsAsync(document, message.Cursor) ?? Task.FromResult(CompletionList.Empty));
 
-            if (results is not null)
-            {
-                var ires = ImmutableArray.CreateBuilder<LiteResult>();
-                foreach  (var r in results.Items)
-                    ires.Add(new LiteResult(
-                                displayText: r.DisplayText,
-                                displayTextPrefix: r.DisplayTextPrefix,
-                                displayTextSuffix: r.DisplayTextSuffix,
-                                inlineDescription: r.InlineDescription,
-                                tags: r.Tags,
-                                properties: r.Properties
-                    ));
+            var ires = ImmutableArray.CreateBuilder<LiteResult>();
+            foreach  (var r in results.ItemsList)
+                ires.Add(new LiteResult(
+                            displayText: r.DisplayText,
+                            displayTextPrefix: r.DisplayTextPrefix,
+                            displayTextSuffix: r.DisplayTextSuffix,
+                            inlineDescription: r.InlineDescription,
+                            tags: r.Tags,
+                            properties: r.Properties
+                ));
 
-                replyMessage.Results = ires.ToImmutable();
-            }
-            else
-                replyMessage.Results = ImmutableArray<LiteResult>.Empty;
+            replyMessage.Results = ires.ToImmutable();
 
             _netManager.ServerSendMessage(replyMessage, message.MsgChannel);
         }

Robust.Server/ServerStatus/StatusHost.Acz.cs

@@ -308,7 +308,7 @@ namespace Robust.Server.ServerStatus
         private static bool RequestWantsZStd(IStatusHandlerContext context)
         {
             // Yeah this isn't a good parser for Accept-Encoding but who cares.
-            return context.RequestHeaders.TryGetValue("Accept-Encoding", out var ac) && ac.Count > 0 && ac[0].Contains("zstd");
+            return context.RequestHeaders.TryGetValue("Accept-Encoding", out var ac) && ac.Count > 0 && ac[0]?.Contains("zstd") == true;
         }
 
         // Only call this if the download URL is not available!

Robust.Server/ViewVariables/ViewVariablesSession.cs

@@ -97,7 +97,7 @@ namespace Robust.Server.ViewVariables
 
             // Auto-dirty component. Only works when modifying a field that is directly on a component,
             // Does not work for nested objects.
-            if (Object is Component comp)
+            if (Object is Component { NetSyncEnabled: true } comp)
                 EntityManager.Dirty(comp.Owner, comp);
         }