Merge branch 'master' into android-emulate

.github/workflows/cd.yml

@@ -1,12 +1,13 @@
 name: Continuous Deployment
 on:
   schedule:
-    - cron: '15 4 * * *'
+    - cron: '15 6 * * *'
   workflow_dispatch:
 
 env:
   DOTNET_NOLOGO: true
   DOTNET_CLI_TELEMETRY_OPTOUT: false
+  GIT_LFS_PULL_OPTIONS: '-c lfs.concurrenttransfers=1 -c lfs.transfer.maxretries=2 -c http.version="HTTP/1.1" -c lfs.activitytimeout=60'
 
 jobs:
 
@@ -20,7 +21,7 @@ jobs:
     - name: Checkout LFS
       run: |
         git lfs version
-        git lfs pull
+        git ${{ env.GIT_LFS_PULL_OPTIONS }} lfs pull
     - name: Setup Vulkan
       uses: ./.github/actions/vulkan
     - name: Setup .NET
@@ -35,12 +36,12 @@ jobs:
       run: |
         .\PackageEditor.bat -arch=x64 -platform=Windows -deployOutput=Output
     - name: Upload
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Windows-Editor
         path: Output/Editor.zip
     - name: Upload
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Windows-EditorDebugSymbols
         path: Output/EditorDebugSymbols.zip
@@ -53,7 +54,7 @@ jobs:
     - name: Checkout LFS
       run: |
         git lfs version
-        git lfs pull
+        git ${{ env.GIT_LFS_PULL_OPTIONS }} lfs pull
     - name: Setup Vulkan
       uses: ./.github/actions/vulkan
     - name: Setup .NET
@@ -68,7 +69,7 @@ jobs:
       run: |
         .\PackagePlatforms.bat -arch=x64 -platform=Windows -deployOutput=Output
     - name: Upload
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Windows-Game
         path: Output/Windows.zip
@@ -83,7 +84,7 @@ jobs:
     - name: Checkout LFS
       run: |
         git lfs version
-        git lfs pull
+        git ${{ env.GIT_LFS_PULL_OPTIONS }} lfs pull
     - name: Install dependencies
       run: |
         sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev build-essential gettext libtool libtool-bin libpulse-dev libasound2-dev libjack-dev portaudio19-dev
@@ -101,7 +102,7 @@ jobs:
       run: |
         ./PackageEditor.sh -arch=x64 -platform=Linux -deployOutput=Output
     - name: Upload
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Linux-Editor
         path: Output/FlaxEditorLinux.zip
@@ -114,7 +115,7 @@ jobs:
     - name: Checkout LFS
       run: |
         git lfs version
-        git lfs pull
+        git ${{ env.GIT_LFS_PULL_OPTIONS }} lfs pull
     - name: Install dependencies
       run: |
         sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev build-essential gettext libtool libtool-bin libpulse-dev libasound2-dev libjack-dev portaudio19-dev
@@ -132,7 +133,7 @@ jobs:
       run: |
         ./PackagePlatforms.sh -arch=x64 -platform=Linux -deployOutput=Output
     - name: Upload
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Linux-Game
         path: Output/Linux.zip
@@ -147,7 +148,7 @@ jobs:
     - name: Checkout LFS
       run: |
         git lfs version
-        git lfs pull
+        git ${{ env.GIT_LFS_PULL_OPTIONS }} lfs pull
     - name: Setup Vulkan
       uses: ./.github/actions/vulkan
     - name: Setup .NET
@@ -162,7 +163,7 @@ jobs:
       run: |
         ./PackageEditor.command -arch=ARM64 -platform=Mac -deployOutput=Output
     - name: Upload
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Mac-Editor
         path: Output/FlaxEditorMac.zip
@@ -175,7 +176,7 @@ jobs:
     - name: Checkout LFS
       run: |
         git lfs version
-        git lfs pull
+        git ${{ env.GIT_LFS_PULL_OPTIONS }} lfs pull
     - name: Setup Vulkan
       uses: ./.github/actions/vulkan
     - name: Setup .NET
@@ -190,7 +191,7 @@ jobs:
       run: |
         ./PackagePlatforms.command -arch=ARM64 -platform=Mac -deployOutput=Output
     - name: Upload
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: Mac-Game
         path: Output/Mac.zip

Content/Editor/Scripting/GamePluginTemplate.cs

@@ -0,0 +1,25 @@
+%copyright%using System;
+using System.Collections.Generic;
+using FlaxEngine;
+
+namespace %namespace%;
+
+/// <summary>
+/// %class% GamePlugin.
+/// </summary>
+public class %class% : GamePlugin
+{
+    /// <inheritdoc/>
+    public override void Initialize()
+    {
+        base.Initialize();
+        
+    }
+
+    /// <inheritdoc/>
+    public override void Deinitialize()
+    {
+        base.Deinitialize();
+        
+    }
+}

README.md

@@ -31,7 +31,7 @@ Follow the instructions below to compile and run the engine from source.
 * Install Visual Studio 2022 or newer
 * Install Windows 8.1 SDK or newer (via Visual Studio Installer)
 * Install Microsoft Visual C++ 2015 v140 toolset or newer (via Visual Studio Installer)
-* Install .NET 8 SDK for **Windows x64** (via Visual Studio Installer or [from web](https://dotnet.microsoft.com/en-us/download/dotnet/8.0))
+* Install .NET 8 or 9 SDK for **Windows x64** (via Visual Studio Installer or [from web](https://dotnet.microsoft.com/en-us/download/dotnet/8.0))
 * Install Git with LFS
 * Clone repo (with LFS)
 * Run **GenerateProjectFiles.bat**
@@ -44,8 +44,9 @@ Follow the instructions below to compile and run the engine from source.
 ## Linux
 
 * Install Visual Studio Code
-* Install .NET 8 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/8.0](https://dotnet.microsoft.com/en-us/download/dotnet/8.0))
+* Install .NET 8 or 9 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/8.0](https://dotnet.microsoft.com/en-us/download/dotnet/8.0))
   * Ubuntu: `sudo apt install dotnet-sdk-8.0`
+  * Arch: `sudo pacman -S dotnet-sdk-8.0 dotnet-runtime-8.0 dotnet-targeting-pack-8.0 dotnet-host`
 * Install Vulkan SDK ([https://vulkan.lunarg.com/](https://vulkan.lunarg.com/))
   * Ubuntu: `sudo apt install vulkan-sdk`
   * Arch: `sudo pacman -S spirv-tools vulkan-headers vulkan-tools vulkan-validation-layers`
@@ -67,12 +68,12 @@ Follow the instructions below to compile and run the engine from source.
 ## Mac
 
 * Install XCode
-* Install .NET 8 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/8.0](https://dotnet.microsoft.com/en-us/download/dotnet/8.0))
+* Install .NET 8 or 9 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/8.0](https://dotnet.microsoft.com/en-us/download/dotnet/8.0))
 * Install Vulkan SDK ([https://vulkan.lunarg.com/](https://vulkan.lunarg.com/))
 * Clone repo (with LFS)
 * Run `GenerateProjectFiles.command`
 * Open workspace with XCode or Visual Studio Code
-* Build and run (configuration  `Editor.Mac.Development`)
+* Build and run (configuration `Editor.Mac.Development`)
 
 #### Troubleshooting
 

Source/Editor/Content/Items/ContentItem.cs

@@ -750,7 +750,8 @@ namespace FlaxEditor.Content
 
             // Draw short name
             Render2D.PushClip(ref textRect);
-            Render2D.DrawText(style.FontMedium, ShowFileExtension || view.ShowFileExtensions ? FileName : ShortName, textRect, style.Foreground, nameAlignment, TextAlignment.Center, TextWrapping.WrapWords, 1f, 0.95f);
+            var scale = 0.95f * view.ViewScale;
+            Render2D.DrawText(style.FontMedium, ShowFileExtension || view.ShowFileExtensions ? FileName : ShortName, textRect, style.Foreground, nameAlignment, TextAlignment.Center, TextWrapping.WrapWords, 1f, scale);
             Render2D.PopClip();
 
             if (IsBeingCut)

Source/Editor/Content/Proxy/CSharpProxy.cs

@@ -106,6 +106,23 @@ namespace FlaxEditor.Content
         }
     }
     
+    /// <summary>
+    /// Context proxy object for C# GamePlugin files.
+    /// </summary>
+    /// <seealso cref="FlaxEditor.Content.CSharpProxy" />
+    [ContentContextMenu("New/C#/C# GamePlugin")]
+    public class CSharpGamePluginProxy : CSharpProxy
+    {
+        /// <inheritdoc />
+        public override string Name => "C# GamePlugin";
+
+        /// <inheritdoc />
+        protected override void GetTemplatePath(out string path)
+        {
+            path = StringUtils.CombinePaths(Globals.EngineContentFolder, "Editor/Scripting/GamePluginTemplate.cs");
+        }
+    }
+    
     /// <summary>
     /// Context proxy object for empty C# files.
     /// </summary>

Source/Editor/Content/Proxy/JsonAssetProxy.cs

@@ -1,9 +1,11 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 using System;
+using System.Linq;
 using FlaxEditor.Content.Create;
 using FlaxEditor.CustomEditors;
 using FlaxEditor.CustomEditors.Editors;
+using FlaxEditor.Scripting;
 using FlaxEditor.Windows;
 using FlaxEditor.Windows.Assets;
 using FlaxEngine;
@@ -84,18 +86,67 @@ namespace FlaxEditor.Content
 
                     if (_element != null)
                     {
-                        // Define the rule for the types that can be used to create a json data asset
-                        _element.CustomControl.CheckValid += type =>
-                        type.Type != null &&
-                        type.IsClass &&
-                        type.Type.IsVisible &&
-                        !type.IsAbstract &&
-                        !type.IsGenericType &&
-                        type.Type.GetConstructor(Type.EmptyTypes) != null &&
-                        !typeof(FlaxEngine.GUI.Control).IsAssignableFrom(type.Type) &&
-                        !typeof(FlaxEngine.Object).IsAssignableFrom(type.Type);
+                        _element.CustomControl.CheckValid += OnCheckValidJsonAssetType;
                     }
                 }
+
+                private static Type[] BlacklistedClasses =
+                [
+                    typeof(System.Attribute),
+                    typeof(FlaxEngine.Object),
+                    typeof(FlaxEngine.GUI.Control),
+                ];
+
+                private static Type[] BlacklistedStructs =
+                [
+                    typeof(Float2),
+                    typeof(Float3),
+                    typeof(Float4),
+                    typeof(Double2),
+                    typeof(Double3),
+                    typeof(Double4),
+                    typeof(Vector2),
+                    typeof(Vector3),
+                    typeof(Vector4),
+                    typeof(Half2),
+                    typeof(Half3),
+                    typeof(Half4),
+                    typeof(Int2),
+                    typeof(Int3),
+                    typeof(Int4),
+                    typeof(Transform),
+                    typeof(Quaternion),
+                    typeof(BoundingBox),
+                    typeof(BoundingSphere),
+                    typeof(BoundingFrustum),
+                    typeof(Ray),
+                    typeof(Plane),
+                    typeof(Matrix),
+                    typeof(Color),
+                    typeof(Color32),
+                    typeof(FloatR11G11B10),
+                    typeof(FloatR10G10B10A2),
+                    typeof(FlaxEngine.Half),
+                ];
+
+                private static bool OnCheckValidJsonAssetType(ScriptType type)
+                {
+                    // Define the rule for the types that can be used to create a json data asset
+                    var mType = type.Type;
+                    if (mType == null ||
+                        type.IsAbstract ||
+                        type.IsStatic ||
+                        type.IsGenericType ||
+                        !mType.IsVisible)
+                        return false;
+                    if (type.IsClass)
+                        return mType.GetConstructor(Type.EmptyTypes) != null && BlacklistedClasses.FirstOrDefault(x => x.IsAssignableFrom(mType)) == null;
+                    if (type.IsStructure)
+                        return !type.IsPrimitive && 
+                               !type.IsVoid && 
+                               !BlacklistedStructs.Contains(mType);
+                    return false;
+                }
             }
         }
 
@@ -175,7 +226,7 @@ namespace FlaxEditor.Content
         {
             _thumbnail = SpriteHandle.Invalid;
         }
-        
+
         /// <summary>
         /// Constructor with overriden thumbnail.
         /// </summary>
@@ -196,7 +247,7 @@ namespace FlaxEditor.Content
         {
             Editor.SaveJsonAsset(outputPath, new T());
         }
-        
+
         /// <inheritdoc />
         public override AssetItem ConstructItem(string path, string typeName, ref Guid id)
         {

Source/Editor/Content/Thumbnails/ThumbnailsModule.cs

@@ -496,7 +496,7 @@ namespace FlaxEditor.Content.Thumbnails
                     // Prepare requests
                     bool isAnyReady = false;
                     int checks = Mathf.Min(10, _requests.Count);
-                    for (int i = 0; i < checks; i++)
+                    for (int i = 0; i < checks && i < _requests.Count; i++)
                     {
                         var request = _requests[i];
                         try

Source/Editor/Cooker/GameCooker.cpp

@@ -671,11 +671,14 @@ bool GameCookerImpl::Build()
     MCore::Thread::Attach();
 
     // Build Started
-    CallEvent(GameCooker::EventType::BuildStarted);
-    data.Tools->OnBuildStarted(data);
-    for (int32 stepIndex = 0; stepIndex < Steps.Count(); stepIndex++)
-        Steps[stepIndex]->OnBuildStarted(data);
-    data.InitProgress(Steps.Count());
+    if (!EnumHasAnyFlags(data.Options, BuildOptions::NoCook))
+    {
+        CallEvent(GameCooker::EventType::BuildStarted);
+        data.Tools->OnBuildStarted(data);
+        for (int32 stepIndex = 0; stepIndex < Steps.Count(); stepIndex++)
+            Steps[stepIndex]->OnBuildStarted(data);
+        data.InitProgress(Steps.Count());
+    }
 
     // Execute all steps in a sequence
     bool failed = false;
@@ -741,10 +744,13 @@ bool GameCookerImpl::Build()
     }
     IsRunning = false;
     CancelFlag = 0;
-    for (int32 stepIndex = 0; stepIndex < Steps.Count(); stepIndex++)
-        Steps[stepIndex]->OnBuildEnded(data, failed);
-    data.Tools->OnBuildEnded(data, failed);
-    CallEvent(failed ? GameCooker::EventType::BuildFailed : GameCooker::EventType::BuildDone);
+    if (!EnumHasAnyFlags(data.Options, BuildOptions::NoCook))
+    {
+        for (int32 stepIndex = 0; stepIndex < Steps.Count(); stepIndex++)
+            Steps[stepIndex]->OnBuildEnded(data, failed);
+        data.Tools->OnBuildEnded(data, failed);
+        CallEvent(failed ? GameCooker::EventType::BuildFailed : GameCooker::EventType::BuildDone);
+    }
     Delete(Data);
     Data = nullptr;
 

Source/Editor/Cooker/Platform/Android/AndroidPlatformTools.cpp

@@ -364,6 +364,33 @@ bool AndroidPlatformTools::OnPostProcess(CookingData& data)
     }
 #endif
     const bool distributionPackage = buildSettings->ForDistribution || data.Configuration == BuildConfiguration::Release;
+    
+    if (platformSettings->BuildAAB)
+    {
+        // .aab
+        {
+            CreateProcessSettings procSettings;
+            procSettings.FileName = String::Format(TEXT("\"{0}\" {1}"), data.OriginalOutputPath / gradlew, distributionPackage ? TEXT(":app:bundle") : TEXT(":app:bundleDebug"));
+            procSettings.WorkingDirectory = data.OriginalOutputPath;
+            const int32 result = Platform::CreateProcess(procSettings);
+            if (result != 0)
+            {
+                data.Error(String::Format(TEXT("Failed to build Gradle project into .aab package (result code: {0}). See log for more info."), result));
+                return true;
+            }
+        }
+        // Copy result package
+        const String aab = data.OriginalOutputPath / (distributionPackage ? TEXT("app/build/outputs/bundle/release/app-release.aab") : TEXT("app/build/outputs/bundle/debug/app-debug.aab"));
+        const String outputAab = data.OriginalOutputPath / EditorUtilities::GetOutputName() + TEXT(".aab");
+        if (FileSystem::CopyFile(outputAab, aab))
+        {
+            LOG(Error, "Failed to copy .aab package from {0} to {1}", aab, outputAab);
+            return true;
+        }
+        LOG(Info, "Output Android AAB application package: {0} (size: {1} MB)", outputAab, FileSystem::GetFileSize(outputAab) / 1024 / 1024);
+    }
+
+    // .apk
     {
         CreateProcessSettings procSettings;
         procSettings.FileName = String::Format(TEXT("\"{0}\" {1}"), data.OriginalOutputPath / gradlew, distributionPackage ? TEXT("assemble") : TEXT("assembleDebug"));
@@ -371,20 +398,20 @@ bool AndroidPlatformTools::OnPostProcess(CookingData& data)
         const int32 result = Platform::CreateProcess(procSettings);
         if (result != 0)
         {
-            data.Error(String::Format(TEXT("Failed to build Gradle project into package (result code: {0}). See log for more info."), result));
+            data.Error(String::Format(TEXT("Failed to build Gradle project into .apk package (result code: {0}). See log for more info."), result));
             return true;
         }
     }
-
     // Copy result package
     const String apk = data.OriginalOutputPath / (distributionPackage ? TEXT("app/build/outputs/apk/release/app-release-unsigned.apk") : TEXT("app/build/outputs/apk/debug/app-debug.apk"));
     const String outputApk = data.OriginalOutputPath / EditorUtilities::GetOutputName() + TEXT(".apk");
     if (FileSystem::CopyFile(outputApk, apk))
     {
-        LOG(Error, "Failed to copy package from {0} to {1}", apk, outputApk);
+        LOG(Error, "Failed to copy .apk package from {0} to {1}", apk, outputApk);
         return true;
     }
-    LOG(Info, "Output Android application package: {0} (size: {1} MB)", outputApk, FileSystem::GetFileSize(outputApk) / 1024 / 1024);
+    LOG(Info, "Output Android APK application package: {0} (size: {1} MB)", outputApk, FileSystem::GetFileSize(outputApk) / 1024 / 1024);
+    
 
     return false;
 }

Source/Editor/Cooker/Steps/DeployDataStep.cpp

@@ -214,6 +214,33 @@ bool DeployDataStep::Perform(CookingData& data)
                 FileSystem::NormalizePath(srcDotnet);
                 LOG(Info, "Using .NET Runtime {} at {}", TEXT("Host"), srcDotnet);
 
+                // Get major Version
+                Array<String> pathParts;
+                srcDotnet.Split('/', pathParts);
+                String version;
+                for (int i = 0; i < pathParts.Count(); i++)
+                {
+                    if (pathParts[i] == TEXT("runtimes"))
+                    {
+                        Array<String> versionParts;
+                        pathParts[i - 1].Split('.', versionParts);
+                        if (!versionParts.IsEmpty())
+                        {
+                            const String majorVersion = versionParts[0].TrimTrailing();
+                            int32 versionNum;
+                            StringUtils::Parse(*majorVersion, majorVersion.Length(), &versionNum);
+                            if (Math::IsInRange(versionNum, GAME_BUILD_DOTNET_RUNTIME_MIN_VER, GAME_BUILD_DOTNET_RUNTIME_MAX_VER)) // Check for major part
+                                version = majorVersion;
+                        }
+                    }
+                }
+
+                if (version.IsEmpty())
+                {
+                    data.Error(TEXT("Failed to find supported .NET version for the current host platform."));
+                    return true;
+                }
+
                 // Deploy runtime files
                 const Char* corlibPrivateName = TEXT("System.Private.CoreLib.dll");
                 const bool srcDotnetFromEngine = srcDotnet.Contains(TEXT("Source/Platforms"));
@@ -226,14 +253,14 @@ bool DeployDataStep::Perform(CookingData& data)
                     {
                         // AOT runtime files inside Engine Platform folder
                         packFolder /= TEXT("Dotnet");
-                        dstDotnetLibs /= TEXT("lib/net8.0");
-                        srcDotnetLibs = packFolder / TEXT("lib/net8.0");
+                        dstDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
+                        srcDotnetLibs = packFolder / String::Format(TEXT("lib/net{}.0"), version);
                     }
                     else
                     {
                         // Runtime files inside Dotnet SDK folder but placed for AOT
-                        dstDotnetLibs /= TEXT("lib/net8.0");
-                        srcDotnetLibs /= TEXT("../lib/net8.0");
+                        dstDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
+                        srcDotnetLibs /= String::Format(TEXT("../lib/net{}.0"), version);
                     }
                 }
                 else
@@ -241,14 +268,14 @@ bool DeployDataStep::Perform(CookingData& data)
                     if (srcDotnetFromEngine)
                     {
                         // Runtime files inside Engine Platform folder
-                        dstDotnetLibs /= TEXT("lib/net8.0");
-                        srcDotnetLibs /= TEXT("lib/net8.0");
+                        dstDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
+                        srcDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
                     }
                     else
                     {
                         // Runtime files inside Dotnet SDK folder
                         dstDotnetLibs /= TEXT("shared/Microsoft.NETCore.App");
-                        srcDotnetLibs /= TEXT("../lib/net8.0");
+                        srcDotnetLibs /= String::Format(TEXT("../lib/net{}.0"), version);
                     }
                 }
                 LOG(Info, "Copying .NET files from {} to {}", packFolder, dstDotnet);
@@ -273,6 +300,7 @@ bool DeployDataStep::Perform(CookingData& data)
                     DEPLOY_NATIVE_FILE("libmonosgen-2.0.so");
                     DEPLOY_NATIVE_FILE("libSystem.IO.Compression.Native.so");
                     DEPLOY_NATIVE_FILE("libSystem.Native.so");
+                    DEPLOY_NATIVE_FILE("libSystem.Globalization.Native.so");
                     DEPLOY_NATIVE_FILE("libSystem.Security.Cryptography.Native.Android.so");
                     break;
                 case BuildPlatform::iOSARM64:

Source/Editor/CustomEditors/CustomEditor.cs

@@ -883,7 +883,7 @@ namespace FlaxEditor.CustomEditors
         /// </summary>
         protected virtual void ClearToken()
         {
-            ParentEditor.ClearToken();
+            ParentEditor?.ClearToken();
         }
     }
 }

Source/Editor/CustomEditors/Dedicated/ActorEditor.cs

@@ -9,6 +9,7 @@ using FlaxEditor.CustomEditors.Elements;
 using FlaxEditor.GUI;
 using FlaxEditor.GUI.ContextMenu;
 using FlaxEditor.GUI.Tree;
+using FlaxEditor.Modules;
 using FlaxEditor.Scripting;
 using FlaxEditor.Windows;
 using FlaxEditor.Windows.Assets;
@@ -67,12 +68,16 @@ namespace FlaxEditor.CustomEditors.Dedicated
                         // Use default prefab instance as a reference for the editor
                         Values.SetReferenceValue(prefabInstance);
 
-                        if (Presenter == Editor.Instance.Windows.PropertiesWin.Presenter)
+                        // Display prefab UI (when displaying object inside Prefab Window then display only nested prefabs)
+                        var prefabId = prefab.ID;
+                        Editor.GetPrefabNestedObject(ref prefabId, ref prefabObjectId, out var nestedPrefabId, out var nestedPrefabObjectId);
+                        var nestedPrefab = FlaxEngine.Content.Load<Prefab>(nestedPrefabId);
+                        var panel = layout.CustomContainer<UniformGridPanel>();
+                        panel.CustomControl.Height = 20.0f;
+                        panel.CustomControl.SlotsVertically = 1;
+                        if (Presenter == Editor.Instance.Windows.PropertiesWin.Presenter || nestedPrefab)
                         {
-                            // Add some UI
-                            var panel = layout.CustomContainer<UniformGridPanel>();
-                            panel.CustomControl.Height = 20.0f;
-                            panel.CustomControl.SlotsVertically = 1;
+                            var targetPrefab = nestedPrefab ?? prefab;
                             panel.CustomControl.SlotsHorizontally = 3;
                             
                             // Selecting actor prefab asset
@@ -80,22 +85,21 @@ namespace FlaxEditor.CustomEditors.Dedicated
                             selectPrefab.Button.Clicked += () =>
                             {
                                 Editor.Instance.Windows.ContentWin.ClearItemsSearch();
-                                Editor.Instance.Windows.ContentWin.Select(prefab);
+                                Editor.Instance.Windows.ContentWin.Select(targetPrefab);
                             };
 
                             // Edit selected prefab asset
                             var editPrefab = panel.Button("Edit Prefab");
-                            editPrefab.Button.Clicked += () =>
-                            {
-                                Editor.Instance.Windows.ContentWin.ClearItemsSearch();
-                                Editor.Instance.Windows.ContentWin.Select(prefab);
-                                Editor.Instance.Windows.ContentWin.Open(Editor.Instance.Windows.ContentWin.View.Selection[0]);
-                            };
-
-                            // Viewing changes applied to this actor
-                            var viewChanges = panel.Button("View Changes");
-                            viewChanges.Button.Clicked += () => ViewChanges(viewChanges.Button, new Float2(0.0f, 20.0f));
+                            editPrefab.Button.Clicked += () => Editor.Instance.Windows.ContentWin.Open(Editor.Instance.ContentDatabase.FindAsset(targetPrefab.ID));
                         }
+                        else
+                        {
+                            panel.CustomControl.SlotsHorizontally = 1;
+                        }
+
+                        // Viewing changes applied to this actor
+                        var viewChanges = panel.Button("View Changes");
+                        viewChanges.Button.Clicked += () => ViewChanges(viewChanges.Button, new Float2(0.0f, 20.0f));
 
                         // Link event to update editor on prefab apply
                         _linkedPrefabId = prefab.ID;

Source/Editor/CustomEditors/Dedicated/AnimatedModelEditor.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 using System;
+using System.Linq;
 using FlaxEditor.CustomEditors.Elements;
 using FlaxEditor.Surface;
 using FlaxEngine;
@@ -35,6 +36,8 @@ namespace FlaxEditor.CustomEditors.Dedicated
                                                     (instance, parameter, tag) => ((AnimatedModel)instance).GetParameterValue(parameter.Identifier),
                                                     (instance, value, parameter, tag) => ((AnimatedModel)instance).SetParameterValue(parameter.Identifier, value),
                                                     Values);
+                if (!parameters.Any())
+                    group.Label("No parameters", TextAlignment.Center);
                 _parametersAdded = true;
             }
         }

Source/Editor/CustomEditors/Dedicated/CurveObjectEditor.cs

@@ -15,13 +15,23 @@ namespace FlaxEditor.CustomEditors.Dedicated
         private int _firstTimeShow;
         private BezierCurveEditor<T> _curve;
         private Splitter _splitter;
+        private string _heightCachedPath;
 
         /// <inheritdoc />
         public override void Initialize(LayoutElementsContainer layout)
         {
             var item = layout.CustomContainer<BezierCurveEditor<T>>();
             _curve = item.CustomControl;
-            _curve.Height = 120.0f;
+            var height = 120.0f;
+            var presenter = Presenter;
+            if (presenter != null && (presenter.Features & FeatureFlags.CacheExpandedGroups) != 0)
+            {
+                // Try to restore curve height
+                _heightCachedPath = layout.GetLayoutCachePath("Height");
+                if (Editor.Instance.ProjectCache.TryGetCustomData(_heightCachedPath, out float cachedHeight) && cachedHeight > 10.0f)
+                    height = cachedHeight;
+            }
+            _curve.Height = height;
             _curve.Edited += OnCurveEdited;
             _firstTimeShow = 4; // For some weird reason it needs several frames of warmup (probably due to sliders smoothing)
             _splitter = new Splitter
@@ -45,7 +55,11 @@ namespace FlaxEditor.CustomEditors.Dedicated
 
         private void OnSplitterMoved(Float2 location)
         {
-            _curve.Height  = Mathf.Clamp(_splitter.PointToParent(location).Y, 50.0f, 1000.0f);
+            _curve.Height = Mathf.Clamp(_splitter.PointToParent(location).Y, 50.0f, 1000.0f);
+
+            // Cache curve height
+            if (_heightCachedPath != null)
+                Editor.Instance.ProjectCache.SetCustomData(_heightCachedPath, _curve.Height);
         }
 
         /// <inheritdoc />
@@ -133,13 +147,23 @@ namespace FlaxEditor.CustomEditors.Dedicated
         private int _firstTimeShow;
         private LinearCurveEditor<T> _curve;
         private Splitter _splitter;
+        private string _heightCachedPath;
 
         /// <inheritdoc />
         public override void Initialize(LayoutElementsContainer layout)
         {
             var item = layout.CustomContainer<LinearCurveEditor<T>>();
             _curve = item.CustomControl;
-            _curve.Height = 120.0f;
+            var height = 120.0f;
+            var presenter = Presenter;
+            if (presenter != null && (presenter.Features & FeatureFlags.CacheExpandedGroups) != 0)
+            {
+                // Try to restore curve height
+                _heightCachedPath = layout.GetLayoutCachePath("Height");
+                if (Editor.Instance.ProjectCache.TryGetCustomData(_heightCachedPath, out float cachedHeight) && cachedHeight > 10.0f)
+                    height = cachedHeight;
+            }
+            _curve.Height = height;
             _curve.Edited += OnCurveEdited;
             _firstTimeShow = 4; // For some weird reason it needs several frames of warmup (probably due to sliders smoothing)
             _splitter = new Splitter
@@ -164,6 +188,10 @@ namespace FlaxEditor.CustomEditors.Dedicated
         private void OnSplitterMoved(Float2 location)
         {
             _curve.Height  = Mathf.Clamp(_splitter.PointToParent(location).Y, 50.0f, 1000.0f);
+
+            // Cache curve height
+            if (_heightCachedPath != null)
+                Editor.Instance.ProjectCache.SetCustomData(_heightCachedPath, _curve.Height);
         }
 
         /// <inheritdoc />

Source/Editor/CustomEditors/Dedicated/ModelPrefabEditor.cs

@@ -53,6 +53,9 @@ public class ModelPrefabEditor : GenericEditor
             }
         }
 
+        // Creates the import path UI
+        Utilities.Utils.CreateImportPathUI(layout, modelPrefab.ImportPath, false);
+
         var button = layout.Button("Reimport", "Reimports the source asset as prefab.");
         _reimportButton = button.Button;
         _reimportButton.Clicked += OnReimport;

Source/Editor/CustomEditors/Dedicated/ParticleEffectEditor.cs

@@ -117,6 +117,9 @@ namespace FlaxEditor.CustomEditors.Dedicated
                 var data = SurfaceUtils.InitGraphParameters(parametersGroup);
                 SurfaceUtils.DisplayGraphParameters(group, data, ParameterGet, ParameterSet, Values, ParameterDefaultValue);
             }
+            
+            if (!parameters.Any())
+                groups.Label("No parameters", TextAlignment.Center);
         }
 
         /// <inheritdoc />

Source/Editor/CustomEditors/Editors/AssetRefEditor.cs

@@ -4,6 +4,7 @@ using System;
 using System.Linq;
 using FlaxEditor.Content;
 using FlaxEditor.GUI;
+using FlaxEditor.GUI.Drag;
 using FlaxEditor.Scripting;
 using FlaxEngine;
 using FlaxEngine.GUI;
@@ -122,7 +123,9 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             base.Refresh();
 
-            if (!HasDifferentValues)
+            var differentValues = HasDifferentValues;
+            Picker.DifferentValues = differentValues;
+            if (!differentValues)
             {
                 _isRefreshing = true;
                 var value = Values[0];
@@ -156,6 +159,17 @@ namespace FlaxEditor.CustomEditors.Editors
             private Rectangle DropdownRect => new Rectangle(Width - DropdownIconSize - DropdownIconMargin, DropdownIconMargin, DropdownIconSize, DropdownIconSize);
 
             public Action ShowPicker;
+            public Action<ContentItem> OnAssetDropped;
+            
+            private DragItems _dragItems;
+            private DragHandlers _dragHandlers;
+            private bool _hasValidDragOver;
+            private Func<ContentItem, bool> _validate;
+
+            public void SetValidationMethod(Func<ContentItem, bool> validate)
+            {
+                _validate = validate;
+            }
 
             public override void Draw()
             {
@@ -164,6 +178,14 @@ namespace FlaxEditor.CustomEditors.Editors
                 var style = FlaxEngine.GUI.Style.Current;
                 var dropdownRect = DropdownRect;
                 Render2D.DrawSprite(style.ArrowDown, dropdownRect, Enabled ? (DropdownRect.Contains(PointFromWindow(RootWindow.MousePosition)) ? style.BorderSelected : style.Foreground) : style.ForegroundDisabled);
+                
+                // Check if drag is over
+                if (IsDragOver && _hasValidDragOver)
+                {
+                    var bounds = new Rectangle(Float2.Zero, Size);
+                    Render2D.FillRectangle(bounds, style.Selection);
+                    Render2D.DrawRectangle(bounds, style.SelectionBorder);
+                }
             }
 
             public override bool OnMouseDown(Float2 location, MouseButton button)
@@ -207,6 +229,68 @@ namespace FlaxEditor.CustomEditors.Editors
                     return result;
                 }
             }
+
+            private DragDropEffect DragEffect => _hasValidDragOver ? DragDropEffect.Move : DragDropEffect.None;
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragEnter(ref Float2 location, DragData data)
+            {
+                base.OnDragEnter(ref location, data);
+
+                // Ensure to have valid drag helpers (uses lazy init)
+                if (_dragItems == null)
+                    _dragItems = new DragItems(ValidateDragAsset);
+                if (_dragHandlers == null)
+                {
+                    _dragHandlers = new DragHandlers
+                    {
+                        _dragItems,
+                    };
+                }
+
+                _hasValidDragOver = _dragHandlers.OnDragEnter(data) != DragDropEffect.None;
+                
+
+                return DragEffect;
+            }
+
+            private bool ValidateDragAsset(ContentItem contentItem)
+            {
+                // Load or get asset
+                return _validate?.Invoke(contentItem) ?? false;
+            }
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragMove(ref Float2 location, DragData data)
+            {
+                base.OnDragMove(ref location, data);
+
+                return DragEffect;
+            }
+
+            /// <inheritdoc />
+            public override void OnDragLeave()
+            {
+                _hasValidDragOver = false;
+                _dragHandlers.OnDragLeave();
+
+                base.OnDragLeave();
+            }
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragDrop(ref Float2 location, DragData data)
+            {
+                var result = DragEffect;
+
+                base.OnDragDrop(ref location, data);
+                
+                if (_dragItems.HasValidDrag)
+                {
+                    OnAssetDropped(_dragItems.Objects[0]);
+                }
+
+                return result;
+            }
         }
 
         private TextBoxWithPicker _textBox;
@@ -221,13 +305,21 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             if (HasDifferentTypes)
                 return;
+
+            _validator = new AssetPickerValidator(ScriptType.Null);
             _textBox = layout.Custom<TextBoxWithPicker>().CustomControl;
             _textBox.ShowPicker = OnShowPicker;
+            _textBox.OnAssetDropped = OnItemDropped;
             _textBox.EditEnd += OnEditEnd;
-            _validator = new AssetPickerValidator(ScriptType.Null);
+            _textBox.SetValidationMethod(_validator.IsValid);
             AssetRefEditor.ApplyAssetReferenceAttribute(Values, out _, _validator);
         }
 
+        private void OnItemDropped(ContentItem item)
+        {
+            SetPickerPath(item);
+        }
+
         private void OnShowPicker()
         {
             if (_validator.AssetType != ScriptType.Null)
@@ -285,12 +377,9 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             base.Refresh();
 
-            if (!HasDifferentValues)
-            {
-                _isRefreshing = true;
-                _textBox.Text = GetPath();
-                _isRefreshing = false;
-            }
+            _isRefreshing = true;
+            _textBox.Text = HasDifferentValues ? "Multiple Values" : GetPath();
+            _isRefreshing = false;
         }
 
         /// <inheritdoc />

Source/Editor/CustomEditors/Editors/FlaxObjectRefEditor.cs

@@ -9,6 +9,8 @@ using FlaxEditor.GUI.Drag;
 using FlaxEditor.SceneGraph;
 using FlaxEditor.SceneGraph.GUI;
 using FlaxEditor.Scripting;
+using FlaxEditor.Windows;
+using FlaxEditor.Windows.Assets;
 using FlaxEngine;
 using FlaxEngine.GUI;
 using FlaxEngine.Utilities;
@@ -40,6 +42,11 @@ namespace FlaxEditor.CustomEditors.Editors
         private DragScripts _dragScripts;
         private DragHandlers _dragHandlers;
 
+        /// <summary>
+        /// The presenter using this control.
+        /// </summary>
+        public IPresenterOwner PresenterContext;
+
         /// <summary>
         /// Gets or sets the allowed objects type (given type and all sub classes). Must be <see cref="Object"/> type of any subclass.
         /// </summary>
@@ -129,6 +136,11 @@ namespace FlaxEditor.CustomEditors.Editors
         /// </summary>
         public Func<Object, ScriptType, bool> CheckValid;
 
+        /// <summary>
+        /// Utility flag used to indicate that there are different values assigned to this reference editor and user should be informed about it.
+        /// </summary>
+        public bool DifferentValues;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="FlaxObjectRefPickerControl"/> class.
         /// </summary>
@@ -154,7 +166,7 @@ namespace FlaxEditor.CustomEditors.Editors
                     Value = actor;
                     RootWindow.Focus();
                     Focus();
-                });
+                }, PresenterContext);
             }
             else
             {
@@ -163,7 +175,7 @@ namespace FlaxEditor.CustomEditors.Editors
                     Value = script;
                     RootWindow.Focus();
                     Focus();
-                });
+                }, PresenterContext);
             }
         }
 
@@ -197,7 +209,14 @@ namespace FlaxEditor.CustomEditors.Editors
             Render2D.DrawRectangle(frameRect, isEnabled && (IsMouseOver || IsNavFocused) ? style.BorderHighlighted : style.BorderNormal);
 
             // Check if has item selected
-            if (isSelected)
+            if (DifferentValues)
+            {
+                // Draw info
+                Render2D.PushClip(nameRect);
+                Render2D.DrawText(style.FontMedium, Type != null ? $"Multiple Values ({Utilities.Utils.GetPropertyNameUI(Type.ToString())})" : "-", nameRect, isEnabled ? style.ForegroundGrey : style.ForegroundGrey.AlphaMultiplied(0.75f), TextAlignment.Near, TextAlignment.Center);
+                Render2D.PopClip();
+            }
+            else if (isSelected)
             {
                 // Draw name
                 Render2D.PushClip(nameRect);
@@ -415,13 +434,13 @@ namespace FlaxEditor.CustomEditors.Editors
 
             // Ensure to have valid drag helpers (uses lazy init)
             if (_dragActors == null)
-                _dragActors = new DragActors(x => IsValid(x.Actor));
+                _dragActors = new DragActors(ValidateDragActor);
             if (_dragActorsWithScript == null)
                 _dragActorsWithScript = new DragActors(ValidateDragActorWithScript);
             if (_dragAssets == null)
                 _dragAssets = new DragAssets(ValidateDragAsset);
             if (_dragScripts == null)
-                _dragScripts = new DragScripts(IsValid);
+                _dragScripts = new DragScripts(ValidateDragScript);
             if (_dragHandlers == null)
             {
                 _dragHandlers = new DragHandlers
@@ -446,6 +465,43 @@ namespace FlaxEditor.CustomEditors.Editors
             return DragEffect;
         }
 
+        private bool ValidateDragActor(ActorNode a)
+        {
+            if (!IsValid(a.Actor))
+                return false;
+            
+            if (PresenterContext is PrefabWindow prefabWindow)
+            {
+                if (prefabWindow.Tree == a.TreeNode.ParentTree)
+                    return true;
+            }
+            else if (PresenterContext is PropertiesWindow || PresenterContext == null)
+            {
+                if (a.ParentScene != null)
+                    return true;
+            }
+            return false;
+        }
+
+        private bool ValidateDragScript(Script script)
+        {
+            if (!IsValid(script))
+                return false;
+            
+            if (PresenterContext is PrefabWindow prefabWindow)
+            {
+                var actorNode = prefabWindow.Graph.Root.Find(script.Actor);
+                if (actorNode != null)
+                    return true;
+            }
+            else if (PresenterContext is PropertiesWindow || PresenterContext == null)
+            {
+                if (script.Actor.HasScene)
+                    return true;
+            }
+            return false;
+        }
+
         private bool ValidateDragAsset(AssetItem assetItem)
         {
             // Check if can accept assets
@@ -464,7 +520,18 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private bool ValidateDragActorWithScript(ActorNode node)
         {
-            return node.Actor.Scripts.Any(IsValid);
+            bool isCorrectContext = false;
+            if (PresenterContext is PrefabWindow prefabWindow)
+            {
+                if (prefabWindow.Tree == node.TreeNode.ParentTree)
+                    isCorrectContext =  true;
+            }
+            else if (PresenterContext is PropertiesWindow || PresenterContext == null)
+            {
+                if (node.ParentScene != null)
+                    isCorrectContext =  true;
+            }
+            return node.Actor.Scripts.Any(IsValid) && isCorrectContext;
         }
 
         /// <inheritdoc />
@@ -536,6 +603,7 @@ namespace FlaxEditor.CustomEditors.Editors
             if (!HasDifferentTypes)
             {
                 _element = layout.Custom<FlaxObjectRefPickerControl>();
+                _element.CustomControl.PresenterContext = Presenter.Owner;
                 _element.CustomControl.Type = Values.Type.Type != typeof(object) || Values[0] == null ? Values.Type : TypeUtils.GetObjectType(Values[0]);
                 _element.CustomControl.ValueChanged += () => SetValue(_element.CustomControl.Value);
             }
@@ -546,7 +614,9 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             base.Refresh();
 
-            if (!HasDifferentValues)
+            var differentValues = HasDifferentValues;
+            _element.CustomControl.DifferentValues = differentValues;
+            if (!differentValues)
             {
                 _element.CustomControl.Value = Values[0] as Object;
             }

Source/Editor/CustomEditors/Editors/Vector3Editor.cs

@@ -228,7 +228,6 @@ namespace FlaxEditor.CustomEditors.Editors
                 // Handle Sliding
                 if (AllowSlidingForDifferentValues && (isSliding || _slidingEnded))
                 {
-                    // TODO: handle linked values
                     Float3 average = Float3.Zero;
                     for (int i = 0; i < Values.Count; i++)
                     {
@@ -251,12 +250,24 @@ namespace FlaxEditor.CustomEditors.Editors
                     for (int i = 0; i < Values.Count; i++)
                     {
                         var v = Values[i];
-                        if (v is Vector3 asVector3)
-                            v = asVector3 + new Vector3(_valueChanged == ValueChanged.X ? newValue.X : 0, _valueChanged == ValueChanged.Y ? newValue.Y : 0, _valueChanged == ValueChanged.Z ? newValue.Z : 0);
-                        else if (v is Float3 asFloat3)
-                            v = asFloat3 + new Float3(_valueChanged == ValueChanged.X ? newValue.X : 0, _valueChanged == ValueChanged.Y ? newValue.Y : 0, _valueChanged == ValueChanged.Z ? newValue.Z : 0);
-                        else if (v is Double3 asDouble3)
-                            v = asDouble3 + new Double3(_valueChanged == ValueChanged.X ? newValue.X : 0, _valueChanged == ValueChanged.Y ? newValue.Y : 0, _valueChanged == ValueChanged.Z ? newValue.Z : 0);
+                        if (LinkValues)
+                        {
+                            if (v is Vector3 asVector3)
+                                v = asVector3 + new Vector3(newValue.X, newValue.Y, newValue.Z);
+                            else if (v is Float3 asFloat3)
+                                v = asFloat3 + new Float3(newValue.X, newValue.Y, newValue.Z);
+                            else if (v is Double3 asDouble3)
+                                v = asDouble3 + new Double3(newValue.X, newValue.Y, newValue.Z);
+                        }
+                        else
+                        {
+                            if (v is Vector3 asVector3)
+                                v = asVector3 + new Vector3(_valueChanged == ValueChanged.X ? newValue.X : 0, _valueChanged == ValueChanged.Y ? newValue.Y : 0, _valueChanged == ValueChanged.Z ? newValue.Z : 0);
+                            else if (v is Float3 asFloat3)
+                                v = asFloat3 + new Float3(_valueChanged == ValueChanged.X ? newValue.X : 0, _valueChanged == ValueChanged.Y ? newValue.Y : 0, _valueChanged == ValueChanged.Z ? newValue.Z : 0);
+                            else if (v is Double3 asDouble3)
+                                v = asDouble3 + new Double3(_valueChanged == ValueChanged.X ? newValue.X : 0, _valueChanged == ValueChanged.Y ? newValue.Y : 0, _valueChanged == ValueChanged.Z ? newValue.Z : 0);
+                        }
 
                         newObjects[i] = v;
                     }
@@ -267,16 +278,27 @@ namespace FlaxEditor.CustomEditors.Editors
                 }
                 else
                 {
-                    // TODO: handle linked values
                     for (int i = 0; i < Values.Count; i++)
                     {
                         object v = Values[i];
-                        if (v is Vector3 asVector3)
-                            v = new Vector3(_valueChanged == ValueChanged.X ? xValue : asVector3.X, _valueChanged == ValueChanged.Y ? yValue : asVector3.Y, _valueChanged == ValueChanged.Z ? zValue : asVector3.Z);
-                        else if (v is Float3 asFloat3)
-                            v = new Float3(_valueChanged == ValueChanged.X ? xValue : asFloat3.X, _valueChanged == ValueChanged.Y ? yValue : asFloat3.Y, _valueChanged == ValueChanged.Z ? zValue : asFloat3.Z);
-                        else if (v is Double3 asDouble3)
-                            v = new Double3(_valueChanged == ValueChanged.X ? xValue : asDouble3.X, _valueChanged == ValueChanged.Y ? yValue : asDouble3.Y, _valueChanged == ValueChanged.Z ? zValue : asDouble3.Z);
+                        if (LinkValues)
+                        {
+                            if (v is Vector3 asVector3)
+                                v = asVector3 + new Vector3(xValue, yValue, zValue);
+                            else if (v is Float3 asFloat3)
+                                v = asFloat3 + new Float3(xValue, yValue, zValue);
+                            else if (v is Double3 asDouble3)
+                                v = asDouble3 + new Double3(xValue, yValue, zValue);
+                        }
+                        else
+                        {
+                            if (v is Vector3 asVector3)
+                                v = new Vector3(_valueChanged == ValueChanged.X ? xValue : asVector3.X, _valueChanged == ValueChanged.Y ? yValue : asVector3.Y, _valueChanged == ValueChanged.Z ? zValue : asVector3.Z);
+                            else if (v is Float3 asFloat3)
+                                v = new Float3(_valueChanged == ValueChanged.X ? xValue : asFloat3.X, _valueChanged == ValueChanged.Y ? yValue : asFloat3.Y, _valueChanged == ValueChanged.Z ? zValue : asFloat3.Z);
+                            else if (v is Double3 asDouble3)
+                                v = new Double3(_valueChanged == ValueChanged.X ? xValue : asDouble3.X, _valueChanged == ValueChanged.Y ? yValue : asDouble3.Y, _valueChanged == ValueChanged.Z ? zValue : asDouble3.Z);
+                        }
 
                         newObjects[i] = v;
                     }

Source/Editor/CustomEditors/LayoutElementsContainer.cs

@@ -96,6 +96,20 @@ namespace FlaxEditor.CustomEditors
             menu.Show(groupPanel, location);
         }
 
+        internal string GetLayoutCachePath(string name)
+        {
+            // Build group identifier (made of path from group titles)
+            var expandPath = name;
+            var container = this;
+            while (container != null && !(container is CustomEditorPresenter))
+            {
+                if (container.ContainerControl is DropPanel dropPanel)
+                    expandPath = dropPanel.HeaderText + "/" + expandPath;
+                container = container._parent;
+            }
+            return expandPath;
+        }
+
         /// <summary>
         /// Adds new group element.
         /// </summary>
@@ -112,14 +126,7 @@ namespace FlaxEditor.CustomEditors
             if (presenter != null && (presenter.Features & FeatureFlags.CacheExpandedGroups) != 0)
             {
                 // Build group identifier (made of path from group titles)
-                var expandPath = title;
-                var container = this;
-                while (container != null && !(container is CustomEditorPresenter))
-                {
-                    if (container.ContainerControl is DropPanel dropPanel)
-                        expandPath = dropPanel.HeaderText + "/" + expandPath;
-                    container = container._parent;
-                }
+                var expandPath = GetLayoutCachePath(title);
 
                 // Caching/restoring expanded groups (non-root groups cache expanded state so invert boolean expression)
                 if (Editor.Instance.ProjectCache.IsGroupToggled(expandPath) ^ isSubGroup)

Source/Editor/CustomEditors/Values/ValueContainer.cs

@@ -250,7 +250,7 @@ namespace FlaxEditor.CustomEditors
             if (objA == null && objB is string objBStr && objBStr.Length == 0)
                 return true;
 
-            return Newtonsoft.Json.Utilities.MiscellaneousUtils.ValueEquals(objA, objB);
+            return FlaxEngine.Json.JsonSerializer.ValueEquals(objA, objB);
         }
 
         /// <summary>

Source/Editor/Editor.cpp

@@ -550,7 +550,7 @@ int32 Editor::LoadProduct()
         }
         if (!FileSystem::FileExists(files[0]))
         {
-            Platform::Fatal(TEXT("Cannot opoen selected project file because it doesn't exist."));
+            Platform::Fatal(TEXT("Cannot open selected project file because it doesn't exist."));
             return -1;
         }
         projectPath = StringUtils::GetDirectoryName(files[0]);

Source/Editor/Editor.cs

@@ -1686,9 +1686,6 @@ namespace FlaxEditor
         [return: MarshalAs(UnmanagedType.U1)]
         internal static partial bool Internal_CanSetToRoot(IntPtr prefab, IntPtr newRoot);
 
-        [LibraryImport("FlaxEngine", EntryPoint = "EditorInternal_GetPrefabNestedObject", StringMarshalling = StringMarshalling.Custom, StringMarshallingCustomType = typeof(StringMarshaller))]
-        internal static partial void Internal_GetPrefabNestedObject(IntPtr prefabId, IntPtr prefabObjectId, IntPtr outPrefabId, IntPtr outPrefabObjectId);
-
         [LibraryImport("FlaxEngine", EntryPoint = "EditorInternal_GetAnimationTime", StringMarshalling = StringMarshalling.Custom, StringMarshallingCustomType = typeof(StringMarshaller))]
         internal static partial float Internal_GetAnimationTime(IntPtr animatedModel);
 

Source/Editor/GUI/AssetPicker.cs

@@ -48,6 +48,11 @@ namespace FlaxEditor.GUI
         /// </summary>
         public bool CanEdit = true;
 
+        /// <summary>
+        /// Utility flag used to indicate that there are different values assigned to this reference editor and user should be informed about it.
+        /// </summary>
+        public bool DifferentValues;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="AssetPicker"/> class.
         /// </summary>
@@ -121,7 +126,13 @@ namespace FlaxEditor.GUI
             if (CanEdit)
                 Render2D.DrawSprite(style.ArrowDown, button1Rect, button1Rect.Contains(_mousePos) ? style.Foreground : style.ForegroundGrey);
 
-            if (Validator.SelectedItem != null)
+            if (DifferentValues)
+            {
+                // No element selected
+                Render2D.FillRectangle(iconRect, style.BackgroundNormal);
+                Render2D.DrawText(style.FontMedium, "Multiple\nValues", iconRect, style.Foreground, TextAlignment.Center, TextAlignment.Center, TextWrapping.NoWrap, 1.0f, Height / DefaultIconSize);
+            }
+            else if (Validator.SelectedItem != null)
             {
                 // Draw item preview
                 Validator.SelectedItem.DrawThumbnail(ref iconRect);

Source/Editor/GUI/CurveEditor.Contents.cs

@@ -30,8 +30,10 @@ namespace FlaxEditor.GUI
             internal bool _isMovingTangent;
             internal bool _movedView;
             internal bool _movedKeyframes;
+            internal bool _toggledSelection;
             private TangentPoint _movingTangent;
             private Float2 _movingSelectionStart;
+            private Float2 _movingSelectionStartPosLock;
             private Float2[] _movingSelectionOffsets;
             private Float2 _cmShowPos;
 
@@ -56,12 +58,11 @@ namespace FlaxEditor.GUI
             internal void UpdateSelection(ref Rectangle selectionRect)
             {
                 // Find controls to select
-                for (int i = 0; i < Children.Count; i++)
+                var children = _children;
+                for (int i = 0; i < children.Count; i++)
                 {
-                    if (Children[i] is KeyframePoint p)
-                    {
+                    if (children[i] is KeyframePoint p)
                         p.IsSelected = p.Bounds.Intersects(ref selectionRect);
-                    }
                 }
                 _editor.UpdateTangents();
             }
@@ -72,6 +73,7 @@ namespace FlaxEditor.GUI
                 _isMovingSelection = true;
                 _movedKeyframes = false;
                 var viewRect = _editor._mainPanel.GetClientArea();
+                _movingSelectionStartPosLock = location;
                 _movingSelectionStart = PointToKeyframes(location, ref viewRect);
                 if (_movingSelectionOffsets == null || _movingSelectionOffsets.Length != _editor._points.Count)
                     _movingSelectionOffsets = new Float2[_editor._points.Count];
@@ -82,10 +84,17 @@ namespace FlaxEditor.GUI
 
             internal void OnMove(Float2 location)
             {
+                // Skip updating keyframes until move actual starts to be meaningful
+                if (Float2.Distance(ref _movingSelectionStartPosLock, ref location) < 1.5f)
+                    return;
+                _movingSelectionStartPosLock = Float2.Minimum;
+
                 var viewRect = _editor._mainPanel.GetClientArea();
                 var locationKeyframes = PointToKeyframes(location, ref viewRect);
                 var accessor = _editor.Accessor;
                 var components = accessor.GetCurveComponents();
+                var snapEnabled = Root.GetKey(KeyboardKeys.Control);
+                var snapGrid = snapEnabled ? _editor.GetGridSnap() : Float2.One;
                 for (var i = 0; i < _editor._points.Count; i++)
                 {
                     var p = _editor._points[i];
@@ -122,7 +131,20 @@ namespace FlaxEditor.GUI
                         if (isFirstSelected)
                         {
                             time = locationKeyframes.X + offset.X;
+                        }
 
+                        if (snapEnabled)
+                        {
+                            // Snap to the grid
+                            var key = new Float2(time, value);
+                            key = Float2.SnapToGrid(key, snapGrid);
+                            time = key.X;
+                            value = key.Y;
+                        }
+
+                        // Clamp and snap time to the valid range
+                        if (isFirstSelected)
+                        {
                             if (_editor.FPS.HasValue)
                             {
                                 float fps = _editor.FPS.Value;
@@ -131,8 +153,6 @@ namespace FlaxEditor.GUI
                             time = Mathf.Clamp(time, minTime, maxTime);
                         }
 
-                        // TODO: snapping keyframes to grid when moving
-
                         _editor.SetKeyframeInternal(p.Index, time, value, p.Component);
                     }
                     _editor.UpdateKeyframes();
@@ -234,7 +254,11 @@ namespace FlaxEditor.GUI
                     var k = _editor.GetKeyframe(_movingTangent.Index);
                     var kv = _editor.GetKeyframeValue(k);
                     var value = _editor.Accessor.GetCurveValue(ref kv, _movingTangent.Component);
-                    _movingTangent.TangentValue = PointToKeyframes(location, ref viewRect).Y - value;
+                    var tangent = PointToKeyframes(location, ref viewRect).Y - value;
+                    if (Root.GetKey(KeyboardKeys.Control))
+                        tangent = Float2.SnapToGrid(new Float2(0, tangent), _editor.GetGridSnap()).Y; // Snap tangent over Y axis
+                    tangent = tangent * _editor.ViewScale.X * 2;
+                    _movingTangent.TangentValue = tangent;
                     _editor.UpdateTangents();
                     Cursor = CursorType.SizeNS;
                     _movedKeyframes = true;
@@ -283,6 +307,7 @@ namespace FlaxEditor.GUI
                 }
 
                 // Cache data
+                _toggledSelection = false;
                 _isMovingSelection = false;
                 _isMovingTangent = false;
                 _mousePos = location;
@@ -305,13 +330,7 @@ namespace FlaxEditor.GUI
                 {
                     if (_leftMouseDown)
                     {
-                        if (Root.GetKey(KeyboardKeys.Control))
-                        {
-                            // Toggle selection
-                            keyframe.IsSelected = !keyframe.IsSelected;
-                            _editor.UpdateTangents();
-                        }
-                        else if (Root.GetKey(KeyboardKeys.Shift))
+                        if (Root.GetKey(KeyboardKeys.Shift))
                         {
                             // Select range
                             keyframe.IsSelected = true;
@@ -335,10 +354,14 @@ namespace FlaxEditor.GUI
                         else if (!keyframe.IsSelected)
                         {
                             // Select node
-                            if (_editor.KeyframesEditorContext != null)
-                                _editor.KeyframesEditorContext.OnKeyframesDeselect(_editor);
-                            else
-                                _editor.ClearSelection();
+                            if (!Root.GetKey(KeyboardKeys.Control))
+                            {
+                                if (_editor.KeyframesEditorContext != null)
+                                    _editor.KeyframesEditorContext.OnKeyframesDeselect(_editor);
+                                else
+                                    _editor.ClearSelection();
+                            }
+                            _toggledSelection = true;
                             keyframe.IsSelected = true;
                             _editor.UpdateTangents();
                         }
@@ -429,6 +452,12 @@ namespace FlaxEditor.GUI
                         else
                             OnMoveEnd(location);
                     }
+                    // Toggle selection
+                    else if (!_toggledSelection && Root.GetKey(KeyboardKeys.Control) && GetChildAt(location) is KeyframePoint keyframe)
+                    {
+                        keyframe.IsSelected = !keyframe.IsSelected;
+                        _editor.UpdateTangents();
+                    }
 
                     _isMovingSelection = false;
                     _isMovingTangent = false;
@@ -514,11 +543,11 @@ namespace FlaxEditor.GUI
             {
                 if (base.OnMouseDoubleClick(location, button))
                     return true;
-                
+
                 // Add keyframe on double click
                 var child = GetChildAt(location);
-                if (child is not KeyframePoint && 
-                    child is not TangentPoint && 
+                if (child is not KeyframePoint &&
+                    child is not TangentPoint &&
                     _editor.KeyframesCount < _editor.MaxKeyframes)
                 {
                     var viewRect = _editor._mainPanel.GetClientArea();
@@ -545,7 +574,7 @@ namespace FlaxEditor.GUI
                     var viewRect = _editor._mainPanel.GetClientArea();
                     var locationInKeyframes = PointToKeyframes(location, ref viewRect);
                     var locationInEditorBefore = _editor.PointFromKeyframes(locationInKeyframes, ref viewRect);
-                    
+
                     // Scale relative to the curve size
                     var scale = new Float2(delta * 0.1f);
                     _editor._mainPanel.GetDesireClientArea(out var mainPanelArea);

Source/Editor/GUI/CurveEditor.cs

@@ -163,10 +163,11 @@ namespace FlaxEditor.GUI
             /// <inheritdoc />
             public override void Draw()
             {
+                var style = Style.Current;
                 var rect = new Rectangle(Float2.Zero, Size);
-                var color = Editor.ShowCollapsed ? Color.Gray : Editor.Colors[Component];
+                var color = Editor.ShowCollapsed ? style.ForegroundDisabled : Editor.Colors[Component];
                 if (IsSelected)
-                    color = Editor.ContainsFocus ? Color.YellowGreen : Color.Lerp(Color.Gray, Color.YellowGreen, 0.4f);
+                    color = Editor.ContainsFocus ? style.SelectionBorder : Color.Lerp(style.ForegroundDisabled, style.SelectionBorder, 0.4f);
                 if (IsMouseOver)
                     color *= 1.1f;
                 Render2D.FillRectangle(rect, color);
@@ -244,14 +245,19 @@ namespace FlaxEditor.GUI
                 set => Editor.SetKeyframeTangentInternal(Index, IsIn, Component, value);
             }
 
+            internal float TangentOffset => 50.0f / Editor.ViewScale.X;
+
             /// <inheritdoc />
             public override void Draw()
             {
+                var style = Style.Current;
+                var thickness = 6.0f / Mathf.Max(Editor.ViewScale.X, 1.0f);
+                var size = Size;
                 var pointPos = PointFromParent(Point.Center);
-                Render2D.DrawLine(Size * 0.5f, pointPos, Color.Gray);
+                Render2D.DrawLine(size * 0.5f, pointPos, style.ForegroundDisabled, thickness);
 
-                var rect = new Rectangle(Float2.Zero, Size);
-                var color = Color.MediumVioletRed;
+                var rect = new Rectangle(Float2.Zero, size);
+                var color = style.BorderSelected;
                 if (IsMouseOver)
                     color *= 1.1f;
                 Render2D.FillRectangle(rect, color);
@@ -289,7 +295,7 @@ namespace FlaxEditor.GUI
         /// <summary>
         /// The curve time/value axes tick steps.
         /// </summary>
-        protected float[] TickSteps = Utilities.Utils.CurveTickSteps;
+        protected double[] TickSteps = Utilities.Utils.CurveTickSteps;
 
         /// <summary>
         /// The curve contents area.
@@ -442,7 +448,7 @@ namespace FlaxEditor.GUI
             _mainPanel = new Panel(ScrollBars.Both)
             {
                 ScrollMargin = new Margin(150.0f),
-                AlwaysShowScrollbars = true,
+                AlwaysShowScrollbars = false,
                 AnchorPreset = AnchorPresets.StretchAll,
                 Offsets = Margin.Zero,
                 Parent = this
@@ -668,26 +674,82 @@ namespace FlaxEditor.GUI
             OnEditingEnd();
         }
 
+        private void ShowCurve(bool selectedOnly)
+        {
+            if (_points.Count == 0)
+                return;
+            int pass = 1;
+            REDO:
+
+            // Get curve bounds in Keyframes (time and value)
+            Float2 posMin = Float2.Maximum, posMax = Float2.Minimum;
+            // TODO: include bezier curve bounds calculation to handle curve outside the bounds made out of points
+            foreach (var point in _points)
+            {
+                if (selectedOnly && !point.IsSelected)
+                    continue;
+                var pos = point.Point;
+                Float2.Min(ref posMin, ref pos, out posMin);
+                Float2.Max(ref posMax, ref pos, out posMax);
+            }
+
+            // Apply margin around the area
+            var posMargin = (posMax - posMin) * 0.05f;
+            posMin -= posMargin;
+            posMax += posMargin;
+
+            // Convert from Keyframes to Contents
+            _mainPanel.GetDesireClientArea(out var viewRect);
+            PointFromKeyframesToContents(ref posMin, ref viewRect);
+            PointFromKeyframesToContents(ref posMax, ref viewRect);
+            var tmp = posMin;
+            Float2.Min(ref posMin, ref posMax, out posMin);
+            Float2.Max(ref posMax, ref tmp, out posMax);
+            var contentsSize = posMax - posMin;
+
+            // Convert from Contents to Main Panel
+            posMin = _contents.PointToParent(posMin);
+            posMax = _contents.PointToParent(posMax);
+            tmp = posMin;
+            Float2.Min(ref posMin, ref posMax, out posMin);
+            Float2.Max(ref posMax, ref tmp, out posMax);
+
+            // Update zoom (leave unchanged when focusing a single point)
+            var zoomMask = EnableZoom;
+            if (Mathf.IsZero(posMargin.X))
+                zoomMask &= ~UseMode.Horizontal;
+            if (Mathf.IsZero(posMargin.Y))
+                zoomMask &= ~UseMode.Vertical;
+            ViewScale = ApplyUseModeMask(zoomMask, viewRect.Size / contentsSize, ViewScale);
+
+            // Update scroll (attempt to center the area when it's smaller than the view)
+            Float2 viewOffset = -posMin;
+            Float2 viewSize = _mainPanel.Size;
+            Float2 viewSizeLeft = viewSize - Float2.Clamp(posMax - posMin, Float2.Zero, viewSize);
+            viewOffset += viewSizeLeft * 0.5f;
+            viewOffset = ApplyUseModeMask(EnablePanning, viewOffset, _mainPanel.ViewOffset);
+            _mainPanel.ViewOffset = viewOffset;
+
+            // Do it multiple times so the view offset can be properly calculate once the view scale gets changes
+            if (pass++ <= 2)
+                goto REDO;
+
+            UpdateKeyframes();
+        }
+
+        /// <summary>
+        /// Focuses the view on the selected keyframes.
+        /// </summary>
+        public void FocusSelection()
+        {
+            // Fallback to showing whole curve if nothing is selected
+            ShowCurve(SelectionCount != 0);
+        }
+
         /// <inheritdoc />
         public override void ShowWholeCurve()
         {
-            _mainPanel.GetDesireClientArea(out var mainPanelArea);
-            ViewScale = ApplyUseModeMask(EnableZoom, mainPanelArea.Size / _contents.Size, ViewScale);
-            Float2 minPos = Float2.Maximum;
-            foreach (var point in _points)
-            {
-                var pos = point.PointToParent(point.Location);
-                Float2.Min(ref minPos, ref pos, out minPos);
-            }
-            var minPosPoint = _contents.PointToParent(ref minPos);
-            var scroll = new Float2(_mainPanel.HScrollBar?.TargetValue ?? 0, _mainPanel.VScrollBar?.TargetValue ?? 0);
-            scroll = ApplyUseModeMask(EnablePanning, minPosPoint, scroll);
-            if (_mainPanel.HScrollBar != null)
-                _mainPanel.HScrollBar.TargetValue = scroll.X;
-            if (_mainPanel.VScrollBar != null)
-                _mainPanel.VScrollBar.TargetValue = scroll.Y;
-
-            UpdateKeyframes();
+            ShowCurve(false);
         }
 
         /// <inheritdoc />
@@ -766,10 +828,7 @@ namespace FlaxEditor.GUI
             point = _contents.PointFromParent(point);
 
             // Contents -> Keyframes
-            return new Float2(
-                              (point.X + _contents.Location.X) / UnitsPerSecond,
-                              (point.Y + _contents.Location.Y - curveContentAreaBounds.Height) / -UnitsPerSecond
-                             );
+            return PointFromContentsToKeyframes(ref point, ref curveContentAreaBounds);
         }
 
         /// <summary>
@@ -781,10 +840,7 @@ namespace FlaxEditor.GUI
         protected Float2 PointFromKeyframes(Float2 point, ref Rectangle curveContentAreaBounds)
         {
             // Keyframes -> Contents
-            point = new Float2(
-                               point.X * UnitsPerSecond - _contents.Location.X,
-                               point.Y * -UnitsPerSecond + curveContentAreaBounds.Height - _contents.Location.Y
-                              );
+            PointFromKeyframesToContents(ref point, ref curveContentAreaBounds);
 
             // Contents -> Main Panel
             point = _contents.PointToParent(point);
@@ -793,11 +849,27 @@ namespace FlaxEditor.GUI
             return _mainPanel.PointToParent(point);
         }
 
+        internal Float2 PointFromContentsToKeyframes(ref Float2 point, ref Rectangle curveContentAreaBounds)
+        {
+            return new Float2(
+                              (point.X + _contents.Location.X) / UnitsPerSecond,
+                              (point.Y + _contents.Location.Y - curveContentAreaBounds.Height) / -UnitsPerSecond
+                             );
+        }
+
+        internal void PointFromKeyframesToContents(ref Float2 point, ref Rectangle curveContentAreaBounds)
+        {
+            point = new Float2(
+                               point.X * UnitsPerSecond - _contents.Location.X,
+                               point.Y * -UnitsPerSecond + curveContentAreaBounds.Height - _contents.Location.Y
+                              );
+        }
+
         private void DrawAxis(Float2 axis, Rectangle viewRect, float min, float max, float pixelRange)
         {
-            Utilities.Utils.DrawCurveTicks((float tick, float strength) =>
+            Utilities.Utils.DrawCurveTicks((decimal tick, double step, float strength) =>
             {
-                var p = PointFromKeyframes(axis * tick, ref viewRect);
+                var p = PointFromKeyframes(axis * (float)tick, ref viewRect);
 
                 // Draw line
                 var lineRect = new Rectangle
@@ -820,6 +892,24 @@ namespace FlaxEditor.GUI
             }, TickSteps, ref _tickStrengths, min, max, pixelRange);
         }
 
+        private void SetupGrid(out Float2 min, out Float2 max, out Float2 pixelRange)
+        {
+            var viewRect = _mainPanel.GetClientArea();
+            var upperLeft = PointToKeyframes(viewRect.Location, ref viewRect);
+            var bottomRight = PointToKeyframes(viewRect.Size, ref viewRect);
+
+            min = Float2.Min(upperLeft, bottomRight);
+            max = Float2.Max(upperLeft, bottomRight);
+            pixelRange = (max - min) * ViewScale * UnitsPerSecond;
+        }
+
+        private Float2 GetGridSnap()
+        {
+            SetupGrid(out var min, out var max, out var pixelRange);
+            return new Float2(Utilities.Utils.GetCurveGridSnap(TickSteps, ref _tickStrengths, min.X, max.X, pixelRange.X),
+                              Utilities.Utils.GetCurveGridSnap(TickSteps, ref _tickStrengths, min.Y, max.Y, pixelRange.Y));
+        }
+
         /// <summary>
         /// Draws the curve.
         /// </summary>
@@ -849,12 +939,7 @@ namespace FlaxEditor.GUI
             // Draw time and values axes
             if (ShowAxes != UseMode.Off)
             {
-                var upperLeft = PointToKeyframes(viewRect.Location, ref viewRect);
-                var bottomRight = PointToKeyframes(viewRect.Size, ref viewRect);
-
-                var min = Float2.Min(upperLeft, bottomRight);
-                var max = Float2.Max(upperLeft, bottomRight);
-                var pixelRange = (max - min) * ViewScale * UnitsPerSecond;
+                SetupGrid(out var min, out var max, out var pixelRange);
 
                 Render2D.PushClip(ref viewRect);
 
@@ -939,7 +1024,7 @@ namespace FlaxEditor.GUI
             }
             else if (options.FocusSelection.Process(this))
             {
-                ShowWholeCurve();
+                FocusSelection();
                 return true;
             }
 
@@ -2200,7 +2285,7 @@ namespace FlaxEditor.GUI
 
                     var tangent = t.TangentValue;
                     var direction = t.IsIn ? -1.0f : 1.0f;
-                    var offset = 30.0f;
+                    var offset = t.TangentOffset;
                     var location = GetKeyframePoint(ref k, selectedComponent);
                     t.Size = KeyframesSize / ViewScale;
                     t.Location = new Float2
@@ -2227,6 +2312,18 @@ namespace FlaxEditor.GUI
             }
         }
 
+        /// <inheritdoc />
+        protected override void SetScaleInternal(ref Float2 scale)
+        {
+            base.SetScaleInternal(ref scale);
+
+            if (!_showCollapsed)
+            {
+                // Refresh keyframes when zooming (their size depends on the scale)
+                UpdateKeyframes();
+            }
+        }
+
         /// <inheritdoc />
         protected override void OnShowContextMenu(ContextMenu.ContextMenu cm, int selectionCount)
         {

Source/Editor/GUI/Popups/ActorSearchPopup.cs

@@ -1,6 +1,8 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 using System;
+using FlaxEditor.Windows;
+using FlaxEditor.Windows.Assets;
 using FlaxEngine;
 using FlaxEngine.GUI;
 
@@ -55,18 +57,26 @@ namespace FlaxEditor.GUI
         private IsValidDelegate _isValid;
         private Action<Actor> _selected;
 
-        private ActorSearchPopup(IsValidDelegate isValid, Action<Actor> selected)
+        private ActorSearchPopup(IsValidDelegate isValid, Action<Actor> selected, CustomEditors.IPresenterOwner context)
         {
             _isValid = isValid;
             _selected = selected;
 
             ItemClicked += OnItemClicked;
 
-            // TODO: use async thread to search scenes
-            for (int i = 0; i < Level.ScenesCount; i++)
+            if (context is PropertiesWindow propertiesWindow || context == null)
             {
-                Find(Level.GetScene(i));
+                // TODO: use async thread to search scenes
+                for (int i = 0; i < Level.ScenesCount; i++)
+                {
+                    Find(Level.GetScene(i));
+                }
             }
+            else if (context is PrefabWindow prefabWindow)
+            {
+                Find(prefabWindow.Graph.MainActor);
+            }
+            
             SortItems();
         }
 
@@ -98,10 +108,11 @@ namespace FlaxEditor.GUI
         /// <param name="showTargetLocation">The show target location.</param>
         /// <param name="isValid">Event called to check if a given actor item is valid to be used.</param>
         /// <param name="selected">Event called on actor item pick.</param>
+        /// <param name="context">The presenter owner context (i.e. PrefabWindow, PropertiesWindow).</param>
         /// <returns>The dialog.</returns>
-        public static ActorSearchPopup Show(Control showTarget, Float2 showTargetLocation, IsValidDelegate isValid, Action<Actor> selected)
+        public static ActorSearchPopup Show(Control showTarget, Float2 showTargetLocation, IsValidDelegate isValid, Action<Actor> selected, CustomEditors.IPresenterOwner context)
         {
-            var popup = new ActorSearchPopup(isValid, selected);
+            var popup = new ActorSearchPopup(isValid, selected, context);
             popup.Show(showTarget, showTargetLocation);
             return popup;
         }

Source/Editor/GUI/Popups/ScriptSearchPopup.cs

@@ -1,6 +1,8 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 using System;
+using FlaxEditor.Windows;
+using FlaxEditor.Windows.Assets;
 using FlaxEngine;
 using FlaxEngine.GUI;
 using FlaxEngine.Utilities;
@@ -66,18 +68,26 @@ namespace FlaxEditor.GUI
         private IsValidDelegate _isValid;
         private Action<Script> _selected;
 
-        private ScriptSearchPopup(IsValidDelegate isValid, Action<Script> selected)
+        private ScriptSearchPopup(IsValidDelegate isValid, Action<Script> selected, CustomEditors.IPresenterOwner context)
         {
             _isValid = isValid;
             _selected = selected;
 
             ItemClicked += OnItemClicked;
 
-            // TODO: use async thread to search scenes
-            for (int i = 0; i < Level.ScenesCount; i++)
+            if (context is PropertiesWindow propertiesWindow || context == null)
             {
-                Find(Level.GetScene(i));
+                // TODO: use async thread to search scenes
+                for (int i = 0; i < Level.ScenesCount; i++)
+                {
+                    Find(Level.GetScene(i));
+                }
             }
+            else if (context is PrefabWindow prefabWindow)
+            {
+                Find(prefabWindow.Graph.MainActor);
+            }
+
             SortItems();
         }
 
@@ -113,10 +123,11 @@ namespace FlaxEditor.GUI
         /// <param name="showTargetLocation">The show target location.</param>
         /// <param name="isValid">Event called to check if a given script item is valid to be used.</param>
         /// <param name="selected">Event called on script item pick.</param>
+        /// <param name="context">The presenter owner context (i.e. PrefabWindow, PropertiesWindow).</param>
         /// <returns>The dialog.</returns>
-        public static ScriptSearchPopup Show(Control showTarget, Float2 showTargetLocation, IsValidDelegate isValid, Action<Script> selected)
+        public static ScriptSearchPopup Show(Control showTarget, Float2 showTargetLocation, IsValidDelegate isValid, Action<Script> selected, CustomEditors.IPresenterOwner context)
         {
-            var popup = new ScriptSearchPopup(isValid, selected);
+            var popup = new ScriptSearchPopup(isValid, selected, context);
             popup.Show(showTarget, showTargetLocation);
             return popup;
         }

Source/Editor/GUI/Popups/TypeSearchPopup.cs

@@ -1,10 +1,13 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 using System;
+using System.ComponentModel;
 using System.Linq;
+using FlaxEditor.History;
 using FlaxEditor.Scripting;
 using FlaxEngine;
 using FlaxEngine.GUI;
+using CategoryAttribute = FlaxEngine.CategoryAttribute;
 
 namespace FlaxEditor.GUI
 {
@@ -101,11 +104,26 @@ namespace FlaxEditor.GUI
                 if (_isValid(type))
                 {
                     var attributes = type.GetAttributes(true);
-                    if (attributes.FirstOrDefault(x => x is HideInEditorAttribute || x is System.Runtime.CompilerServices.CompilerGeneratedAttribute) == null)
+                    if (IsHideAttributes(attributes))
                     {
                         var mType = type.Type;
-                        if (mType != null && mType.IsValueType && mType.ReflectedType != null && string.Equals(mType.ReflectedType.Name, "<PrivateImplementationDetails>", StringComparison.Ordinal))
-                            continue;
+                        if (mType != null)
+                        {
+                            // Skip if type is compiler-generated
+                            if (mType.IsValueType && mType.ReflectedType != null && string.Equals(mType.ReflectedType.Name, "<PrivateImplementationDetails>", StringComparison.Ordinal))
+                                continue;
+
+                            // Skip if outer type is hidden
+                            if (mType.DeclaringType != null && IsHideAttributes(mType.DeclaringType.GetCustomAttributes(true)))
+                                continue;
+
+                            // Blacklist some types
+                            if (typeof(TypeConverter).IsAssignableFrom(mType) ||
+                                typeof(IHistoryAction).IsAssignableFrom(mType) ||
+                                (mType.Namespace != null && mType.Namespace.StartsWith("Newtonsoft.Json")))
+                                continue;
+                        }
+
                         AddItem(new TypeItemView(type, attributes));
                     }
                 }
@@ -113,6 +131,17 @@ namespace FlaxEditor.GUI
             SortItems();
         }
 
+        private bool IsHideAttributes(object[] attributes)
+        {
+            return attributes.FirstOrDefault(IsHideAttribute) == null;
+        }
+
+        private bool IsHideAttribute(object attr)
+        {
+            return attr is HideInEditorAttribute || 
+                   attr is System.Runtime.CompilerServices.CompilerGeneratedAttribute;
+        }
+
         private void OnItemClicked(Item item)
         {
             _selected(((TypeItemView)item).Type);

Source/Editor/GUI/Timeline/GUI/Background.cs

@@ -14,7 +14,7 @@ namespace FlaxEditor.GUI.Timeline.GUI
     class Background : ContainerControl
     {
         private readonly Timeline _timeline;
-        private float[] _tickSteps;
+        private double[] _tickSteps;
         private float[] _tickStrengths;
         private bool _isSelecting;
         private Float2 _selectingStartPos = Float2.Minimum;
@@ -176,9 +176,9 @@ namespace FlaxEditor.GUI.Timeline.GUI
             // Draw vertical lines for time axis
             var pixelsInRange = _timeline.Zoom;
             var pixelRange = pixelsInRange * (max - min);
-            var tickRange = Utilities.Utils.DrawCurveTicks((float tick, float strength) =>
+            var tickRange = Utilities.Utils.DrawCurveTicks((decimal tick, double step, float strength) =>
             {
-                var time = tick / _timeline.FramesPerSecond;
+                var time = (float)tick / _timeline.FramesPerSecond;
                 var x = time * zoom + Timeline.StartOffset;
                 var lineColor = style.ForegroundDisabled.RGBMultiplied(0.7f).AlphaMultiplied(strength);
                 Render2D.FillRectangle(new Rectangle(x - 0.5f, 0, 1.0f, height), lineColor);
@@ -233,20 +233,20 @@ namespace FlaxEditor.GUI.Timeline.GUI
                 int l = Mathf.Clamp(smallestTick + level, 0, _tickSteps.Length - 2);
                 var lStep = _tickSteps[l];
                 var lNextStep = _tickSteps[l + 1];
-                int startTick = Mathf.FloorToInt(min / lStep);
-                int endTick = Mathf.CeilToInt(max / lStep);
+                var startTick = Mathd.FloorToInt(min / lStep);
+                var endTick = Mathd.CeilToInt(max / lStep);
                 Color lineColor = style.Foreground.RGBMultiplied(0.8f).AlphaMultiplied(strength);
                 Color labelColor = style.ForegroundDisabled.AlphaMultiplied(strength);
-                for (int i = startTick; i <= endTick; i++)
+                for (var i = startTick; i <= endTick; i++)
                 {
-                    if (l < biggestTick && (i % Mathf.RoundToInt(lNextStep / lStep) == 0))
+                    if (l < biggestTick && (i % Mathd.RoundToInt(lNextStep / lStep) == 0))
                         continue;
-                    var tick = i * lStep;
-                    var time = tick / _timeline.FramesPerSecond;
-                    var x = time * zoom + Timeline.StartOffset;
+                    var tick = (decimal)lStep * i;
+                    var time = (double)tick / _timeline.FramesPerSecond;
+                    var x = (float)time * zoom + Timeline.StartOffset;
 
                     // Header line
-                    var lineRect = new Rectangle(x - 0.5f, -verticalLinesHeaderExtend * 0.6f + timeAxisHeaderOffset, 1.0f, verticalLinesHeaderExtend * 0.6f);
+                    var lineRect = new Rectangle((float)x - 0.5f, -verticalLinesHeaderExtend * 0.6f + timeAxisHeaderOffset, 1.0f, verticalLinesHeaderExtend * 0.6f);
                     Render2D.FillRectangle(lineRect, lineColor);
 
                     // Time label

Source/Editor/GUI/Timeline/GUI/KeyframesEditor.cs

@@ -8,7 +8,6 @@ using System.Text;
 using FlaxEditor.CustomEditors;
 using FlaxEditor.GUI.ContextMenu;
 using FlaxEditor.Options;
-using FlaxEditor.Scripting;
 using FlaxEngine;
 using FlaxEngine.GUI;
 using FlaxEngine.Json;

Source/Editor/GUI/Timeline/Tracks/ActorTrack.cs

@@ -264,7 +264,7 @@ namespace FlaxEditor.GUI.Timeline.Tracks
 
         private void OnClickedSelect()
         {
-            ActorSearchPopup.Show(this, PointFromScreen(FlaxEngine.Input.MouseScreenPosition), IsActorValid, SetActor);
+            ActorSearchPopup.Show(this, PointFromScreen(FlaxEngine.Input.MouseScreenPosition), IsActorValid, SetActor, null);
         }
 
         private void OnClickedSelectActor(Image image, MouseButton button)

Source/Editor/Gizmo/GridGizmo.cs

@@ -19,12 +19,11 @@ namespace FlaxEditor.Gizmo
             [StructLayout(LayoutKind.Sequential)]
             private struct Data
             {
-                public Matrix WorldMatrix;
                 public Matrix ViewProjectionMatrix;
                 public Float4 GridColor;
                 public Float3 ViewPos;
                 public float Far;
-                public Float3 Padding;
+                public Float3 ViewOrigin;
                 public float GridSize;
             }
 
@@ -62,7 +61,6 @@ namespace FlaxEditor.Gizmo
                 Profiler.BeginEventGPU("Editor Grid");
 
                 var options = Editor.Instance.Options.Options;
-                Float3 camPos = renderContext.View.WorldPosition;
                 float gridSize = renderContext.View.Far + 20000;
 
                 // Lazy-init resources
@@ -97,10 +95,10 @@ namespace FlaxEditor.Gizmo
                 float y = 1.5f; // Add small bias to reduce Z-fighting with geometry at scene origin
                 var vertices = new Float3[]
                 {
-                    new Float3(-gridSize + camPos.X, y, -gridSize + camPos.Z),
-                    new Float3(gridSize + camPos.X, y, gridSize + camPos.Z),
-                    new Float3(-gridSize + camPos.X, y, gridSize + camPos.Z),
-                    new Float3(gridSize + camPos.X, y, -gridSize + camPos.Z),
+                    new Float3(-gridSize, y, -gridSize),
+                    new Float3(gridSize, y, gridSize),
+                    new Float3(-gridSize, y, gridSize),
+                    new Float3(gridSize, y, -gridSize),
                 };
                 fixed (Float3* ptr = vertices)
                 {
@@ -113,12 +111,12 @@ namespace FlaxEditor.Gizmo
                 {
                     var data = new Data();
                     Matrix.Multiply(ref renderContext.View.View, ref renderContext.View.Projection, out var viewProjection);
-                    data.WorldMatrix = Matrix.Identity;
                     Matrix.Transpose(ref viewProjection, out data.ViewProjectionMatrix);
                     data.ViewPos = renderContext.View.WorldPosition;
                     data.GridColor = options.Viewport.ViewportGridColor;
                     data.Far = renderContext.View.Far;
                     data.GridSize = options.Viewport.ViewportGridViewDistance;
+                    data.ViewOrigin = renderContext.View.Origin;
                     context.UpdateCB(cb, new IntPtr(&data));
                 }
 

Source/Editor/Gizmo/TransformGizmoBase.Selection.cs

@@ -169,12 +169,12 @@ namespace FlaxEditor.Gizmo
                     closestIntersection = intersection;
                 }
 
-                /*// Center
-                if (CenterBoxRaw.Intersects(ref localRay, out intersection) && intersection < closestIntersection)
+                // Center
+                if (CenterBoxRaw.Intersects(ref localRay, out intersection) && intersection > closestIntersection)
                 {
                     _activeAxis = Axis.Center;
                     closestIntersection = intersection;
-                }*/
+                }
 
                 break;
             }

Source/Editor/Gizmo/TransformGizmoBase.Settings.cs

@@ -20,7 +20,7 @@ namespace FlaxEditor.Gizmo
         /// <summary>
         /// Offset to move axis away from center
         /// </summary>
-        private const float AxisOffset = 0.8f;
+        private const float AxisOffset = 1.2f;
 
         /// <summary>
         /// How thick the axis should be

Source/Editor/Gizmo/TransformGizmoBase.cs

@@ -501,7 +501,7 @@ namespace FlaxEditor.Gizmo
                         _scaleDelta = Vector3.Zero;
 
                         if (ActiveAxis == Axis.Center)
-                            scaleDelta = new Vector3(scaleDelta.AvgValue);
+                            scaleDelta = new Vector3(scaleDelta.ValuesSum);
                     }
 
                     // Apply transformation (but to the parents, not whole selection pool)

Source/Editor/Gizmo/UIEditorGizmo.cs

@@ -1,5 +1,6 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using FlaxEditor.Gizmo;
@@ -149,7 +150,8 @@ namespace FlaxEditor
         private float _mouseMoveSum;
         private UndoMultiBlock _undoBlock;
         private View _view;
-        private float[] _gridTickSteps = Utilities.Utils.CurveTickSteps, _gridTickStrengths;
+        private double[] _gridTickSteps = Utilities.Utils.CurveTickSteps;
+        private float[] _gridTickStrengths;
         private List<Widget> _widgets;
         private Widget _activeWidget;
 
@@ -563,9 +565,9 @@ namespace FlaxEditor
             var linesColor = style.ForegroundDisabled.RGBMultiplied(0.5f);
             var labelsColor = style.ForegroundDisabled;
             var labelsSize = 10.0f;
-            Utilities.Utils.DrawCurveTicks((float tick, float strength) =>
+            Utilities.Utils.DrawCurveTicks((decimal tick, double step, float strength) =>
             {
-                var p = _view.PointToParent(axis * tick);
+                var p = _view.PointToParent(axis * (float)tick);
 
                 // Draw line
                 var lineRect = new Rectangle
@@ -640,14 +642,103 @@ namespace FlaxEditor
                 DrawControlWidget(uiControl, ref eu, ref mousePos, ref widgetHandleSize, viewScale, new Float2(0, -1), CursorType.SizeNS);
                 DrawControlWidget(uiControl, ref eb, ref mousePos, ref widgetHandleSize, viewScale, new Float2(0, 1), CursorType.SizeNS);
 
-                // TODO: draw anchors
+                // Draw pivot
+                var pivotSize = 8.0f;
+                if (viewScale < 0.7f)
+                    pivotSize *= viewScale;
+                var pivotX = Mathf.Remap(control.Pivot.X, 0, 1, bounds.Location.X, bounds.Location.X + bounds.Width);
+                var pivotY = Mathf.Remap(control.Pivot.Y, 0, 1, bounds.Location.Y, bounds.Location.Y + bounds.Height);
+                var pivotLoc = control.PointToParent(this, new Float2(pivotX, pivotY));
+                var pivotRect = new Rectangle(pivotLoc - pivotSize * 0.5f, new Float2(pivotSize));
+                var pivotColor = options.UIPivotColor;
+                Render2D.FillRectangle(pivotRect, pivotColor);
+
+                // Draw anchors
+                var controlParent = control.Parent;
+                if (controlParent != null)
+                {
+                    var parentBounds = controlParent.EditorBounds;
+                    var anchorMin = control.AnchorMin;
+                    var anchorMax = control.AnchorMax;
+                    var newMinX = Mathf.Remap(anchorMin.X, 0, 1, parentBounds.UpperLeft.X, parentBounds.UpperRight.X);
+                    var newMinY = Mathf.Remap(anchorMin.Y, 0, 1, parentBounds.UpperLeft.Y, parentBounds.LowerLeft.Y);
+                    var newMaxX = Mathf.Remap(anchorMax.X, 0, 1, parentBounds.UpperLeft.X, parentBounds.UpperRight.X);
+                    var newMaxY = Mathf.Remap(anchorMax.Y, 0, 1, parentBounds.UpperLeft.Y, parentBounds.LowerLeft.Y);
+
+                    var anchorUpperLeft = controlParent.PointToParent(this, new Float2(newMinX, newMinY));
+                    var anchorUpperRight = controlParent.PointToParent(this, new Float2(newMaxX, newMinY));
+                    var anchorLowerLeft = controlParent.PointToParent(this, new Float2(newMinX, newMaxY));
+                    var anchorLowerRight = controlParent.PointToParent(this, new Float2(newMaxX, newMaxY));
+
+                    var anchorRectSize = 8.0f;
+                    if (viewScale < 0.7f)
+                        anchorRectSize *= viewScale;
+
+                    // Make anchor rects and rotate if parent is rotated.
+                    var parentRotation = controlParent.Rotation * Mathf.DegreesToRadians;
+
+                    var rect1Axis = new Float2(-1, -1);
+                    var rect1 = new Rectangle(anchorUpperLeft + 
+                                              new Float2(anchorRectSize * rect1Axis.X * Mathf.Cos(parentRotation) - anchorRectSize * rect1Axis.Y * Mathf.Sin(parentRotation), 
+                                                         anchorRectSize * rect1Axis.Y * Mathf.Cos(parentRotation) + anchorRectSize * rect1Axis.X * Mathf.Sin(parentRotation)) - anchorRectSize * 0.5f, new Float2(anchorRectSize));
+                    var rect2Axis = new Float2(1, -1);
+                    var rect2 = new Rectangle(anchorUpperRight + 
+                                              new Float2(anchorRectSize * rect2Axis.X * Mathf.Cos(parentRotation) - anchorRectSize * rect2Axis.Y * Mathf.Sin(parentRotation), 
+                                                         anchorRectSize * rect2Axis.Y * Mathf.Cos(parentRotation) + anchorRectSize * rect2Axis.X * Mathf.Sin(parentRotation)) - anchorRectSize * 0.5f, new Float2(anchorRectSize));
+                    var rect3Axis = new Float2(-1, 1);
+                    var rect3 = new Rectangle(anchorLowerLeft + 
+                                              new Float2(anchorRectSize * rect3Axis.X * Mathf.Cos(parentRotation) - anchorRectSize * rect3Axis.Y * Mathf.Sin(parentRotation), 
+                                                         anchorRectSize * rect3Axis.Y * Mathf.Cos(parentRotation) + anchorRectSize * rect3Axis.X * Mathf.Sin(parentRotation)) - anchorRectSize * 0.5f, new Float2(anchorRectSize));
+                    var rect4Axis = new Float2(1, 1);
+                    var rect4 = new Rectangle(anchorLowerRight + 
+                                              new Float2(anchorRectSize * rect4Axis.X * Mathf.Cos(parentRotation) - anchorRectSize * rect4Axis.Y * Mathf.Sin(parentRotation), 
+                                                         anchorRectSize * rect4Axis.Y * Mathf.Cos(parentRotation) + anchorRectSize * rect4Axis.X * Mathf.Sin(parentRotation)) - anchorRectSize * 0.5f, new Float2(anchorRectSize));
+
+                    var rectColor = options.UIAnchorColor;
+                    Render2D.DrawLine(anchorUpperLeft, anchorUpperRight, rectColor);
+                    Render2D.DrawLine(anchorUpperRight, anchorLowerRight, rectColor);
+                    Render2D.DrawLine(anchorLowerRight, anchorLowerLeft, rectColor);
+                    Render2D.DrawLine(anchorLowerLeft, anchorUpperLeft, rectColor);
+                    Render2D.FillRectangle(rect1, rectColor);
+                    Render2D.FillRectangle(rect2, rectColor);
+                    Render2D.FillRectangle(rect3, rectColor);
+                    Render2D.FillRectangle(rect4, rectColor);
+                }
             }
         }
 
         private void DrawControlWidget(UIControl uiControl, ref Float2 pos, ref Float2 mousePos, ref Float2 size, float scale, Float2 resizeAxis, CursorType cursor)
         {
             var style = Style.Current;
-            var rect = new Rectangle((pos + resizeAxis * 10 * scale) - size * 0.5f, size);
+            var control = uiControl.Control;
+            var rotation = control.Rotation;
+            var rotationInRadians = rotation * Mathf.DegreesToRadians;
+            var rect = new Rectangle((pos + 
+                                      new Float2(resizeAxis.X * Mathf.Cos(rotationInRadians) - resizeAxis.Y * Mathf.Sin(rotationInRadians), 
+                                                 resizeAxis.Y * Mathf.Cos(rotationInRadians) + resizeAxis.X * Mathf.Sin(rotationInRadians)) * 10 * scale) - size * 0.5f,
+                                     size);
+            
+            // Find more correct cursor at different angles
+            var unwindRotation = Mathf.UnwindDegrees(rotation);
+            if (unwindRotation is (>= 45 and < 135) or (> -135 and <= -45) )
+            {
+                switch (cursor)
+                {
+                case CursorType.SizeNESW:
+                    cursor = CursorType.SizeNWSE;
+                    break;
+                case CursorType.SizeNS:
+                    cursor = CursorType.SizeWE;
+                    break;
+                case CursorType.SizeNWSE:
+                    cursor = CursorType.SizeNESW;
+                    break;
+                case CursorType.SizeWE:
+                    cursor = CursorType.SizeNS;
+                    break;
+                default: break;
+                }
+            }
             if (rect.Contains(ref mousePos))
             {
                 Render2D.FillRectangle(rect, style.Foreground);
@@ -684,16 +775,15 @@ namespace FlaxEditor
 
         private bool RayCastControl(ref Float2 location, out Control hit)
         {
-#if false
-            // Raycast only controls with content (eg. skips transparent panels)
-            return RayCastChildren(ref location, out hit);
-#else
-            // Find any control under mouse (hierarchical)
-            hit = GetChildAtRecursive(location);
+            // First, raycast only controls with content (eg. skips transparent panels)
+            RayCastChildren(ref location, out hit);
+
+            // If raycast failed, then find any control under mouse (hierarchical)
+            hit = hit ?? GetChildAtRecursive(location);
             if (hit is View || hit is CanvasContainer)
                 hit = null;
+        
             return hit != null;
-#endif
         }
 
         private UIControlNode FindUIControlNode(Control control)

Source/Editor/Managed/ManagedEditor.Internal.cpp

@@ -501,7 +501,8 @@ DEFINE_INTERNAL_CALL(bool) EditorInternal_CanSetToRoot(Prefab* prefab, Actor* ta
             return false;
         const ISerializable::DeserializeStream& newRootData = **newRootDataPtr;
         Guid prefabId, prefabObjectID;
-        if (JsonTools::GetGuidIfValid(prefabId, newRootData, "PrefabID") && JsonTools::GetGuidIfValid(prefabObjectID, newRootData, "PrefabObjectID"))
+        if (JsonTools::GetGuidIfValid(prefabId, newRootData, "PrefabID") && 
+            JsonTools::GetGuidIfValid(prefabObjectID, newRootData, "PrefabObjectID"))
         {
             const auto nestedPrefab = Content::Load<Prefab>(prefabId);
             if (nestedPrefab && nestedPrefab->GetRootObjectId() != prefabObjectID)
@@ -511,21 +512,6 @@ DEFINE_INTERNAL_CALL(bool) EditorInternal_CanSetToRoot(Prefab* prefab, Actor* ta
     return true;
 }
 
-DEFINE_INTERNAL_CALL(void) EditorInternal_GetPrefabNestedObject(Guid* prefabId, Guid* prefabObjectId, Guid* outPrefabId, Guid* outPrefabObjectId)
-{
-    *outPrefabId = Guid::Empty;
-    *outPrefabObjectId = Guid::Empty;
-    const auto prefab = Content::Load<Prefab>(*prefabId);
-    if (!prefab)
-        return;
-    const ISerializable::DeserializeStream** prefabObjectDataPtr = prefab->ObjectsDataCache.TryGet(*prefabObjectId);
-    if (!prefabObjectDataPtr)
-        return;
-    const ISerializable::DeserializeStream& prefabObjectData = **prefabObjectDataPtr;
-    JsonTools::GetGuidIfValid(*outPrefabId, prefabObjectData, "PrefabID");
-    JsonTools::GetGuidIfValid(*outPrefabObjectId, prefabObjectData, "PrefabObjectID");
-}
-
 DEFINE_INTERNAL_CALL(float) EditorInternal_GetAnimationTime(AnimatedModel* animatedModel)
 {
     return animatedModel && animatedModel->GraphInstance.State.Count() == 1 ? animatedModel->GraphInstance.State[0].Animation.TimePosition : 0.0f;

Source/Editor/Managed/ManagedEditor.cpp

@@ -12,11 +12,14 @@
 #include "Engine/Scripting/ManagedCLR/MException.h"
 #include "Engine/Scripting/Internal/MainThreadManagedInvokeAction.h"
 #include "Engine/Content/Assets/VisualScript.h"
+#include "Engine/Content/Content.h"
 #include "Engine/CSG/CSGBuilder.h"
 #include "Engine/Engine/CommandLine.h"
 #include "Engine/Renderer/ProbesRenderer.h"
 #include "Engine/Animations/Graph/AnimGraph.h"
 #include "Engine/Core/ObjectsRemovalService.h"
+#include "Engine/Level/Prefabs/Prefab.h"
+#include "Engine/Serialization/JsonTools.h"
 
 ManagedEditor::InternalOptions ManagedEditor::ManagedEditorOptions;
 
@@ -592,6 +595,7 @@ bool ManagedEditor::EvaluateVisualScriptLocal(VisualScript* script, VisualScript
 
 void ManagedEditor::WipeOutLeftoverSceneObjects()
 {
+    PROFILE_CPU();
     Array<ScriptingObject*> objects = Scripting::GetObjects();
     bool removedAny = false;
     for (ScriptingObject* object : objects)
@@ -613,6 +617,21 @@ void ManagedEditor::WipeOutLeftoverSceneObjects()
         ObjectsRemovalService::Flush();
 }
 
+void ManagedEditor::GetPrefabNestedObject(const Guid& prefabId, const Guid& prefabObjectId, Guid& outPrefabId, Guid& outPrefabObjectId)
+{
+    outPrefabId = Guid::Empty;
+    outPrefabObjectId = Guid::Empty;
+    const auto prefab = Content::Load<Prefab>(prefabId);
+    if (!prefab)
+        return;
+    const ISerializable::DeserializeStream** prefabObjectDataPtr = prefab->ObjectsDataCache.TryGet(prefabObjectId);
+    if (!prefabObjectDataPtr)
+        return;
+    const ISerializable::DeserializeStream& prefabObjectData = **prefabObjectDataPtr;
+    JsonTools::GetGuidIfValid(outPrefabId, prefabObjectData, "PrefabID");
+    JsonTools::GetGuidIfValid(outPrefabObjectId, prefabObjectData, "PrefabObjectID");
+}
+
 void ManagedEditor::OnEditorAssemblyLoaded(MAssembly* assembly)
 {
     ASSERT(!HasManagedInstance());

Source/Editor/Managed/ManagedEditor.h

@@ -259,6 +259,7 @@ public:
     API_FUNCTION(Internal) static Array<VisualScriptLocal> GetVisualScriptLocals();
     API_FUNCTION(Internal) static bool EvaluateVisualScriptLocal(VisualScript* script, API_PARAM(Ref) VisualScriptLocal& local);
     API_FUNCTION(Internal) static void WipeOutLeftoverSceneObjects();
+    API_FUNCTION(Internal) static void GetPrefabNestedObject(API_PARAM(Ref) const Guid& prefabId, API_PARAM(Ref) const Guid& prefabObjectId, API_PARAM(Out) Guid& outPrefabId, API_PARAM(Out) Guid& outPrefabObjectId);
 
 private:
     void OnEditorAssemblyLoaded(MAssembly* assembly);

Source/Editor/Modules/ContentDatabaseModule.cs

@@ -1140,6 +1140,7 @@ namespace FlaxEditor.Modules
             Proxy.Add(new CSharpEmptyStructProxy());
             Proxy.Add(new CSharpEmptyInterfaceProxy());
             Proxy.Add(new CSharpActorProxy());
+            Proxy.Add(new CSharpGamePluginProxy());
             Proxy.Add(new CppAssetProxy());
             Proxy.Add(new CppStaticClassProxy());
             Proxy.Add(new CppScriptProxy());

Source/Editor/Options/Editor.cs

@@ -1,7 +1,9 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
+using System.Text;
 using FlaxEditor.CustomEditors;
 using FlaxEditor.CustomEditors.Editors;
+using FlaxEngine;
 using FlaxEngine.GUI;
 using FlaxEngine.Json;
 
@@ -31,11 +33,33 @@ namespace FlaxEditor.Options
 
         private void OnResetButtonClicked()
         {
-            var obj = new T();
-            var str = JsonSerializer.Serialize(obj);
-            JsonSerializer.Deserialize(Values[0], str);
-            SetValue(Values[0]);
-            Refresh();
+            var editorClassName = typeof(T).Name;
+            
+            var editorName = new StringBuilder();
+            editorName.Append(editorClassName[0]);
+            for (var i = 1; i < editorClassName.Length; i++)
+            {
+                // Whenever there is an uppercase letter, add a space to make it more pretty for the end user
+                if (char.IsUpper(editorClassName[i]))
+                {
+                    editorName.Append(' ');
+                }
+                editorName.Append(editorClassName[i]);
+            }
+            
+            var result = MessageBox.Show($"Are you sure you want to reset \"{editorName}\" to default values?", 
+                                         "Reset values?",
+                                         MessageBoxButtons.YesNo
+                                         );
+            
+            if (result == DialogResult.Yes || result == DialogResult.OK)
+            {
+                var obj = new T();
+                var str = JsonSerializer.Serialize(obj);
+                JsonSerializer.Deserialize(Values[0], str);
+                SetValue(Values[0]);
+                Refresh();
+            }
         }
     }
 }

Source/Editor/Options/VisualOptions.cs

@@ -39,6 +39,20 @@ namespace FlaxEditor.Options
         [EditorDisplay("UI Gizmo", "UI Control Outline Size"), EditorOrder(103), Tooltip("The size of the selection outline for UI controls.")]
         public float UISelectionOutlineSize { get; set; } = 2.0f;
 
+        /// <summary>
+        /// Gets or sets the pivot color for the UI Gizmo.
+        /// </summary>
+        [DefaultValue(typeof(Color), "0.0,0.5725,0.8,0.5")]
+        [EditorDisplay("UI Gizmo", "Pivot Color"), EditorOrder(103), Tooltip("The color of the pivot for the UI Gizmo.")]
+        public Color UIPivotColor { get; set; } = new Color(0.0f, 0.5725f, 0.8f, 0.5f);
+
+        /// <summary>
+        /// Gets or sets the anchor color for the UI Gizmo.
+        /// </summary>
+        [DefaultValue(typeof(Color), "0.8392,0.8471,0.8706,0.5")]
+        [EditorDisplay("UI Gizmo", "Anchor Color"), EditorOrder(103), Tooltip("The color of the anchors for the UI Gizmo.")]
+        public Color UIAnchorColor { get; set; } = new Color(0.8392f, 0.8471f, 0.8706f, 0.5f);
+
         /// <summary>
         /// Gets or sets the transform gizmo size.
         /// </summary>

Source/Editor/SceneGraph/ActorNode.cs

@@ -215,10 +215,10 @@ namespace FlaxEditor.SceneGraph
         public override bool CanDuplicate => (_actor.HideFlags & HideFlags.HideInHierarchy) == 0;
 
         /// <inheritdoc />
-        public override bool IsActive => _actor.IsActive;
+        public override bool IsActive => _actor?.IsActive ?? false;
 
         /// <inheritdoc />
-        public override bool IsActiveInHierarchy => _actor.IsActiveInHierarchy;
+        public override bool IsActiveInHierarchy => _actor?.IsActiveInHierarchy ?? false;
 
         /// <inheritdoc />
         public override int OrderInParent

Source/Editor/SceneGraph/GUI/ActorTreeNode.cs

@@ -596,11 +596,17 @@ namespace FlaxEditor.SceneGraph.GUI
             {
                 bool worldPositionsStays = Root.GetKey(KeyboardKeys.Control) == false;
                 var objects = new SceneObject[_dragActors.Objects.Count];
+                var treeNodes = new TreeNode[_dragActors.Objects.Count];
                 for (int i = 0; i < objects.Length; i++)
+                {
                     objects[i] = _dragActors.Objects[i].Actor;
+                    treeNodes[i] = _dragActors.Objects[i].TreeNode;
+                }
                 var action = new ParentActorsAction(objects, newParent, newOrder, worldPositionsStays);
                 ActorNode.Root.Undo?.AddAction(action);
                 action.Do();
+                ParentTree.Focus();
+                ParentTree.Select(treeNodes.ToList());
                 result = DragDropEffect.Move;
             }
             // Drag scripts

Source/Editor/Surface/Archetypes/Animation.MultiBlend.cs

@@ -1182,9 +1182,9 @@ namespace FlaxEditor.Surface.Archetypes
             }
 
             /// <inheritdoc />
-            public override void DrawEditorBackground(ref Rectangle rect)
+            public override void DrawEditorGrid(ref Rectangle rect)
             {
-                base.DrawEditorBackground(ref rect);
+                base.DrawEditorGrid(ref rect);
 
                 // Draw triangulated multi blend space
                 var style = Style.Current;
@@ -1195,23 +1195,19 @@ namespace FlaxEditor.Surface.Archetypes
                 else
                     Render2D.FillTriangles(_triangles, style.TextBoxBackgroundSelected.AlphaMultiplied(0.6f));
                 Render2D.DrawTriangles(_triangles, style.Foreground);
-            }
-
-            /// <inheritdoc />
-            public override void DrawEditorGrid(ref Rectangle rect)
-            {
-                base.DrawEditorGrid(ref rect);
 
                 // Highlight selected blend point
-                var style = Style.Current;
                 var selectedIndex = _selectedAnimation.SelectedIndex;
-                if (selectedIndex != -1 && (ContainsFocus || IsMouseOver))
+                if (selectedIndex != -1 && selectedIndex < _editor.BlendPoints.Count && (ContainsFocus || IsMouseOver))
                 {
                     var point = _editor.BlendPoints[selectedIndex];
-                    var highlightColor = point.IsMouseDown ? style.SelectionBorder : style.BackgroundSelected;
-                    Render2D.PushTint(ref highlightColor);
-                    Render2D.DrawTriangles(_selectedTriangles, _selectedColors);
-                    Render2D.PopTint();
+                    if (point != null)
+                    {
+                        var highlightColor = point.IsMouseDown ? style.SelectionBorder : style.BackgroundSelected;
+                        Render2D.PushTint(ref highlightColor);
+                        Render2D.DrawTriangles(_selectedTriangles, _selectedColors);
+                        Render2D.PopTint();
+                    }
                 }
             }
 

Source/Editor/Surface/Archetypes/ParticleModules.cs

@@ -924,6 +924,25 @@ namespace FlaxEditor.Surface.Archetypes
                     (int)ModuleType.Initialize,
                 },
             },
+            new NodeArchetype
+            {
+                TypeID = 216,
+                Create = CreateParticleModuleNode,
+                Title = "Rotate Position Shape",
+                Description = "Rotate the shape.",
+                Flags = DefaultModuleFlags,
+                Size = new Float2(200, 1 * Surface.Constants.LayoutOffsetY),
+                DefaultValues = new object[]
+                {
+                    true,
+                    (int)ModuleType.Initialize,
+                    Quaternion.Identity,
+                },
+                Elements = new []
+                {
+                    NodeElementArchetype.Factory.Input(-0.5f, "Rotation", true, typeof(Quaternion), 0, 2),
+                }
+            },
             GetParticleAttribute(ModuleType.Initialize, 250, "Set Position", "Sets the particle position", typeof(Float3), Float3.Zero),
             GetParticleAttribute(ModuleType.Initialize, 251, "Set Lifetime", "Sets the particle lifetime (in seconds)", typeof(float), 10.0f),
             GetParticleAttribute(ModuleType.Initialize, 252, "Set Age", "Sets the particle age (in seconds)", typeof(float), 0.0f),

Source/Editor/Surface/Archetypes/Tools.cs

@@ -87,11 +87,17 @@ namespace FlaxEditor.Surface.Archetypes
             private class GradientStop : Control
             {
                 private bool _isMoving;
+                private float _movedToTime = float.MaxValue;
                 private Float2 _startMovePos;
 
                 public ColorGradientNode Node;
                 public Color Color;
 
+                public void UpdateLocation(float time)
+                {
+                    Location = Node._gradient.BottomLeft + new Float2(time * Node._gradient.Width - Width * 0.5f, 0.0f);
+                }
+
                 /// <inheritdoc />
                 public override void Draw()
                 {
@@ -118,6 +124,7 @@ namespace FlaxEditor.Surface.Archetypes
                     if (button == MouseButton.Left)
                     {
                         Node.Select(this);
+                        _movedToTime = float.MaxValue;
                         _isMoving = true;
                         _startMovePos = location;
                         StartMouseCapture();
@@ -133,6 +140,12 @@ namespace FlaxEditor.Surface.Archetypes
                     if (button == MouseButton.Left && _isMoving)
                     {
                         _isMoving = false;
+                        if (_movedToTime < float.MaxValue)
+                        {
+                            int index = Node._stops.IndexOf(this);
+                            Node.SetStopTime(index, _movedToTime);
+                            _movedToTime = float.MaxValue;
+                        }
                         EndMouseCapture();
                     }
 
@@ -159,9 +172,10 @@ namespace FlaxEditor.Surface.Archetypes
                     if (_isMoving && Float2.DistanceSquared(ref location, ref _startMovePos) > 25.0f)
                     {
                         _startMovePos = Float2.Minimum;
-                        var index = Node._stops.IndexOf(this);
-                        var time = (PointToParent(location).X - Node._gradient.BottomLeft.X) / Node._gradient.Width;
-                        Node.SetStopTime(index, time);
+                        int index = Node._stops.IndexOf(this);
+                        _movedToTime = (PointToParent(location).X - Node._gradient.BottomLeft.X) / Node._gradient.Width;
+                        _movedToTime = Node.ClampStopTime(index, _movedToTime);
+                        UpdateLocation(_movedToTime);
                     }
 
                     base.OnMouseMove(location);
@@ -171,6 +185,7 @@ namespace FlaxEditor.Surface.Archetypes
                 public override void OnEndMouseCapture()
                 {
                     _isMoving = false;
+                    _movedToTime = float.MaxValue;
 
                     base.OnEndMouseCapture();
                 }
@@ -223,6 +238,7 @@ namespace FlaxEditor.Surface.Archetypes
                     Parent = this
                 };
                 _timeValue.ValueChanged += OnTimeValueChanged;
+                _timeValue.SlidingEnd += OnTimeValueChanged;
 
                 _colorValue = new ColorValueBox(Color.Black, _timeValue.Right + 4.0f, controlsLevel)
                 {
@@ -301,8 +317,16 @@ namespace FlaxEditor.Surface.Archetypes
 
             private void OnTimeValueChanged()
             {
+                var time = _timeValue.Value;
                 var index = _stops.IndexOf(_selected);
-                SetStopTime(index, _timeValue.Value);
+                if (_timeValue.IsSliding)
+                {
+                    // Preview-only while sliding
+                    time = ClampStopTime(index, time);
+                    _selected.UpdateLocation(time);
+                    return;
+                }
+                SetStopTime(index, time);
             }
 
             private void OnColorValueChanged()
@@ -346,7 +370,7 @@ namespace FlaxEditor.Surface.Archetypes
                 UpdateStops();
             }
 
-            private void SetStopTime(int index, float time)
+            private float ClampStopTime(int index, float time)
             {
                 time = Mathf.Saturate(time);
                 if (index != 0)
@@ -357,6 +381,12 @@ namespace FlaxEditor.Surface.Archetypes
                 {
                     time = Mathf.Min(time, (float)Values[1 + index * 2 + 2]);
                 }
+                return time;
+            }
+
+            private void SetStopTime(int index, float time)
+            {
+                time = ClampStopTime(index, time);
                 SetValue(1 + index * 2, time);
             }
 
@@ -395,7 +425,7 @@ namespace FlaxEditor.Surface.Archetypes
                 {
                     var stop = _stops[i];
                     var time = (float)Values[i * 2 + 1];
-                    stop.Location = _gradient.BottomLeft + new Float2(time * _gradient.Width - stop.Width * 0.5f, 0.0f);
+                    stop.UpdateLocation(time);
                     stop.Color = (Color)Values[i * 2 + 2];
                     stop.TooltipText = stop.Color + " at " + time;
                 }

Source/Editor/Undo/Actions/BreakPrefabLinkAction.cs

@@ -23,7 +23,7 @@ namespace FlaxEditor.Actions
             public Guid PrefabID;
             public Guid PrefabObjectID;
 
-            public unsafe Item(SceneObject obj, List<Item> nestedPrefabLinks)
+            public Item(SceneObject obj, List<Item> nestedPrefabLinks)
             {
                 ID = obj.ID;
                 PrefabID = obj.PrefabID;
@@ -33,8 +33,7 @@ namespace FlaxEditor.Actions
                     // Check if this object comes from another nested prefab (to break link only from the top-level prefab)
                     Item nested;
                     nested.ID = ID;
-                    fixed (Item* i = &this)
-                        Editor.Internal_GetPrefabNestedObject(new IntPtr(&i->PrefabID), new IntPtr(&i->PrefabObjectID), new IntPtr(&nested.PrefabID), new IntPtr(&nested.PrefabObjectID));
+                    Editor.GetPrefabNestedObject(ref PrefabID, ref PrefabObjectID, out nested.PrefabID, out nested.PrefabObjectID);
                     if (nested.PrefabID != Guid.Empty && nested.PrefabObjectID != Guid.Empty)
                         nestedPrefabLinks.Add(nested);
                 }

Source/Editor/Undo/UndoActionBase.cs

@@ -42,7 +42,7 @@ namespace FlaxEditor
     /// </summary>
     /// <typeparam name="TData">The type of the data. Must have <see cref="SerializableAttribute"/>.</typeparam>
     /// <seealso cref="FlaxEditor.IUndoAction" />
-    [Serializable]
+    [Serializable, HideInEditor]
     public abstract class UndoActionBase<TData> : IUndoAction where TData : struct
     {
         /// <summary>

Source/Editor/Utilities/Units.cs

@@ -5,7 +5,7 @@ namespace FlaxEditor.Utilities;
 /// <summary>
 /// Units display utilities for Editor.
 /// </summary>
-public class Units
+public static class Units
 {
     /// <summary>
     /// Factor of units per meter.

Source/Editor/Utilities/Utils.cs

@@ -236,19 +236,19 @@ namespace FlaxEditor.Utilities
         /// <summary>
         /// The time/value axes tick steps for editors with timeline.
         /// </summary>
-        internal static readonly float[] CurveTickSteps =
+        internal static readonly double[] CurveTickSteps =
         {
-            0.0000001f, 0.0000005f, 0.000001f, 0.000005f, 0.00001f,
-            0.00005f, 0.0001f, 0.0005f, 0.001f, 0.005f,
-            0.01f, 0.05f, 0.1f, 0.5f, 1,
+            0.0000001, 0.0000005, 0.000001, 0.000005, 0.00001,
+            0.00005, 0.0001, 0.0005, 0.001, 0.005,
+            0.01, 0.05, 0.1, 0.5, 1,
             5, 10, 50, 100, 500,
             1000, 5000, 10000, 50000, 100000,
             500000, 1000000, 5000000, 10000000, 100000000
         };
 
-        internal delegate void DrawCurveTick(float tick, float strength);
+        internal delegate void DrawCurveTick(decimal tick, double step, float strength);
 
-        internal static Int2 DrawCurveTicks(DrawCurveTick drawTick, float[] tickSteps, ref float[] tickStrengths, float min, float max, float pixelRange, float minDistanceBetweenTicks = 20, float maxDistanceBetweenTicks = 60)
+        internal static Int2 DrawCurveTicks(DrawCurveTick drawTick, double[] tickSteps, ref float[] tickStrengths, float min, float max, float pixelRange, float minDistanceBetweenTicks = 20, float maxDistanceBetweenTicks = 60)
         {
             if (pixelRange <= Mathf.Epsilon || maxDistanceBetweenTicks <= minDistanceBetweenTicks)
                 return Int2.Zero;
@@ -262,10 +262,10 @@ namespace FlaxEditor.Utilities
             for (int i = tickSteps.Length - 1; i >= 0; i--)
             {
                 // Calculate how far apart these modulo tick steps are spaced
-                float tickSpacing = tickSteps[i] * pixelsInRange;
+                var tickSpacing = tickSteps[i] * pixelsInRange;
 
                 // Calculate the strength of the tick markers based on the spacing
-                tickStrengths[i] = Mathf.Saturate((tickSpacing - minDistanceBetweenTicks) / (maxDistanceBetweenTicks - minDistanceBetweenTicks));
+                tickStrengths[i] = (float)Mathd.Saturate((tickSpacing - minDistanceBetweenTicks) / (maxDistanceBetweenTicks - minDistanceBetweenTicks));
 
                 // Beyond threshold the ticks don't get any bigger or fatter
                 if (tickStrengths[i] >= 1)
@@ -283,7 +283,7 @@ namespace FlaxEditor.Utilities
             // Draw all tick levels
             for (int level = 0; level < tickLevels; level++)
             {
-                float strength = tickStrengths[smallestTick + level];
+                var strength = tickStrengths[smallestTick + level];
                 if (strength <= Mathf.Epsilon)
                     continue;
 
@@ -291,20 +291,36 @@ namespace FlaxEditor.Utilities
                 int l = Mathf.Clamp(smallestTick + level, 0, tickSteps.Length - 2);
                 var lStep = tickSteps[l];
                 var lNextStep = tickSteps[l + 1];
-                int startTick = Mathf.FloorToInt(min / lStep);
-                int endTick = Mathf.CeilToInt(max / lStep);
-                for (int i = startTick; i <= endTick; i++)
+                var startTick = Mathd.FloorToInt(min / lStep);
+                var endTick = Mathd.CeilToInt(max / lStep);
+                for (var i = startTick; i <= endTick; i++)
                 {
-                    if (l < biggestTick && (i % Mathf.RoundToInt(lNextStep / lStep) == 0))
+                    if (l < biggestTick && (i % Mathd.RoundToInt(lNextStep / lStep) == 0))
                         continue;
-                    var tick = i * lStep;
-                    drawTick(tick, strength);
+                    var tick = (decimal)lStep * i;
+                    drawTick(tick, lStep, strength);
                 }
             }
 
             return new Int2(smallestTick, biggestTick);
         }
 
+        internal static float GetCurveGridSnap(double[] tickSteps, ref float[] tickStrengths, float min, float max, float pixelRange, float minDistanceBetweenTicks = 20, float maxDistanceBetweenTicks = 60)
+        {
+            double gridStep = 0; // No grid
+            float gridWeight = 0.0f;
+            DrawCurveTicks((decimal tick, double step, float strength) =>
+            {
+                // Find the smallest grid step that has meaningful strength (it's the most visible to the user)
+                if (strength > gridWeight && (step < gridStep || gridStep <= 0.0) && strength > 0.5f)
+                {
+                    gridStep = Math.Abs(step);
+                    gridWeight = strength;
+                }
+            }, tickSteps, ref tickStrengths, min, max, pixelRange, minDistanceBetweenTicks, maxDistanceBetweenTicks);
+            return (float)gridStep;
+        }
+
         /// <summary>
         /// Determines whether the specified path string contains any invalid character.
         /// </summary>
@@ -383,6 +399,40 @@ namespace FlaxEditor.Utilities
                 File.Delete(file);
         }
 
+        /// <summary>
+        /// Creates an Import path ui that show the asset import path and adds a button to show the folder in the file system.
+        /// </summary>
+        /// <param name="parentLayout">The parent layout container.</param>
+        /// <param name="assetItem">The asset item to get the import path of.</param>
+        public static void CreateImportPathUI(CustomEditors.LayoutElementsContainer parentLayout, Content.BinaryAssetItem assetItem)
+        {
+            assetItem.GetImportPath(out var path);
+            CreateImportPathUI(parentLayout, path);
+        }
+
+        /// <summary>
+        /// Creates an Import path ui that show the import path and adds a button to show the folder in the file system.
+        /// </summary>
+        /// <param name="parentLayout">The parent layout container.</param>
+        /// <param name="path">The import path.</param>
+        /// <param name="useInitialSpacing">Whether to use an initial layout space of 5 for separation.</param>
+        public static void CreateImportPathUI(CustomEditors.LayoutElementsContainer parentLayout, string path, bool useInitialSpacing = true)
+        {
+            if (!string.IsNullOrEmpty(path))
+            {
+                if (useInitialSpacing)
+                    parentLayout.Space(5);
+                parentLayout.Label("Import Path:").Label.TooltipText = "Source asset path (can be relative or absolute to the project)";
+                var textBox = parentLayout.TextBox().TextBox;
+                textBox.TooltipText = "Path is not editable here.";
+                textBox.IsReadOnly = true;
+                textBox.Text = path;
+                parentLayout.Space(2);
+                var button = parentLayout.Button(Constants.ShowInExplorer).Button;
+                button.Clicked += () => FileSystem.ShowFileExplorer(Path.GetDirectoryName(path));
+            }
+        }
+
         /// <summary>
         /// Copies the directory. Supports subdirectories copy with files override option.
         /// </summary>

Source/Editor/Viewport/Cameras/FPSCamera.cs

@@ -135,6 +135,8 @@ namespace FlaxEditor.Viewport.Cameras
                     float a = Mathf.Saturate(progress);
                     a = a * a * a;
                     var targetTransform = Transform.Lerp(_startMove, _endMove, a);
+                    if (progress >= 1.0f)
+                        targetTransform = _endMove; // Be precise
                     targetTransform.Scale = Vector3.Zero;
                     Viewport.ViewPosition = targetTransform.Translation;
                     Viewport.ViewOrientation = targetTransform.Orientation;

Source/Editor/Viewport/EditorViewport.cs

@@ -229,13 +229,11 @@ namespace FlaxEditor.Viewport
             {
                 if (Mathf.Abs(_movementSpeed - _maxMovementSpeed) < Mathf.Epsilon || Mathf.Abs(_movementSpeed - _minMovementSpeed) < Mathf.Epsilon)
                     return "{0:0.##}";
-
                 if (_movementSpeed < 10.0f)
                     return "{0:0.00}";
-                else if (_movementSpeed < 100.0f)
+                if (_movementSpeed < 100.0f)
                     return "{0:0.0}";
-                else
-                    return "{0:#}";
+                return "{0:#}";
             }
         }
 
@@ -286,11 +284,6 @@ namespace FlaxEditor.Viewport
         /// </summary>
         public Float2 MousePositionDelta => _mouseDelta;
 
-        /// <summary>
-        /// Camera's pitch angle clamp range (in degrees).
-        /// </summary>
-        public Float2 CamPitchAngles = new Float2(-88, 88);
-
         /// <summary>
         /// Gets the view transform.
         /// </summary>
@@ -326,7 +319,7 @@ namespace FlaxEditor.Viewport
             get => Float3.Forward * ViewOrientation;
             set
             {
-                var right = Float3.Cross(value, Float3.Up);
+                var right = Mathf.Abs(Float3.Dot(value, Float3.Up)) < 1.0f - Mathf.Epsilon ? Float3.Cross(value, Float3.Up) : Float3.Forward;
                 var up = Float3.Cross(right, value);
                 ViewOrientation = Quaternion.LookRotation(value, up);
             }
@@ -376,7 +369,11 @@ namespace FlaxEditor.Viewport
         public float Pitch
         {
             get => _pitch;
-            set => _pitch = Mathf.Clamp(value, CamPitchAngles.X, CamPitchAngles.Y);
+            set
+            {
+                var pitchLimit = _isOrtho ? new Float2(-90, 90) : new Float2(-88, 88);
+                _pitch = Mathf.Clamp(value, pitchLimit.X, pitchLimit.Y);
+            }
         }
 
         /// <summary>
@@ -1155,8 +1152,7 @@ namespace FlaxEditor.Viewport
         /// <param name="orientation">The orientation.</param>
         protected void OrientViewport(Quaternion orientation)
         {
-            var quat = orientation;
-            OrientViewport(ref quat);
+            OrientViewport(ref orientation);
         }
 
         /// <summary>
@@ -1367,7 +1363,7 @@ namespace FlaxEditor.Viewport
         {
             var direction = ViewDirection;
             var target = position + direction;
-            var right = Float3.Normalize(Float3.Cross(Float3.Up, direction));
+            var right = Mathf.Abs(Float3.Dot(direction, Float3.Up)) < 1.0f - Mathf.Epsilon ? Float3.Normalize(Float3.Cross(Float3.Up, direction)) : Float3.Forward;
             var up = Float3.Normalize(Float3.Cross(direction, right));
             Matrix.LookAt(ref position, ref target, ref up, out result);
         }

Source/Editor/Viewport/PrefabWindowViewport.cs

@@ -5,10 +5,12 @@ using System.Collections.Generic;
 using System.Linq;
 using FlaxEditor.Content;
 using FlaxEditor.Gizmo;
+using FlaxEditor.GUI.ContextMenu;
 using FlaxEditor.SceneGraph;
 using FlaxEditor.Scripting;
 using FlaxEditor.Viewport.Cameras;
 using FlaxEditor.Viewport.Previews;
+using FlaxEditor.Viewport.Widgets;
 using FlaxEditor.Windows.Assets;
 using FlaxEngine;
 using FlaxEngine.GUI;
@@ -44,7 +46,7 @@ namespace FlaxEditor.Viewport
         private sealed class PrefabUIEditorRoot : UIEditorRoot
         {
             private readonly PrefabWindowViewport _viewport;
-            private bool UI => _viewport._hasUILinkedCached;
+            private bool UI => _viewport.ShowUI;
 
             public PrefabUIEditorRoot(PrefabWindowViewport viewport)
             : base(true)
@@ -67,8 +69,78 @@ namespace FlaxEditor.Viewport
         private PrefabSpritesRenderer _spritesRenderer;
         private IntPtr _tempDebugDrawContext;
 
-        private bool _hasUILinkedCached;
         private PrefabUIEditorRoot _uiRoot;
+        private bool _showUI = false;
+        
+        private ContextMenuButton _uiModeButton;
+
+        /// <summary>
+        /// Event fired when the UI Mode is toggled.
+        /// </summary>
+        public event Action<bool> UIModeToggled;
+
+        /// <summary>
+        /// set the initial UI mod
+        /// </summary>
+        /// <param name="value">the initial ShowUI value</param>
+        public void SetInitialUIMode(bool value)
+        {
+            ShowUI = value;
+            _uiModeButton.Checked = value;
+        }
+
+        /// <summary>
+        /// Whether to show the UI mode or not.
+        /// </summary>
+        public bool ShowUI
+        {
+            get => _showUI;
+            set
+            {
+                _showUI = value;
+                if (_showUI)
+                {
+                    // UI widget
+                    Gizmos.Active = null;
+                    ViewportCamera = new UIEditorCamera { UIEditor = _uiRoot };
+
+                    // Hide 3D visuals
+                    ShowEditorPrimitives = false;
+                    ShowDefaultSceneActors = false;
+                    ShowDebugDraw = false;
+
+                    // Show whole UI on startup
+                    var canvas = (CanvasRootControl)_uiParentLink.Children.FirstOrDefault(x => x is CanvasRootControl);
+                    if (canvas != null)
+                        ViewportCamera.ShowActor(canvas.Canvas);
+                    else if (Instance is UIControl)
+                        ViewportCamera.ShowActor(Instance);
+                    _uiRoot.Visible = true;
+                }
+                else
+                {
+                    // Generic prefab
+                    Gizmos.Active = TransformGizmo;
+                    ViewportCamera = new FPSCamera();
+                    _uiRoot.Visible = false;
+                }
+
+                // Update default components usage
+                bool defaultFeatures = !_showUI;
+                _disableInputUpdate = _showUI;
+                _spritesRenderer.Enabled = defaultFeatures;
+                SelectionOutline.Enabled = defaultFeatures;
+                _showDefaultSceneButton.Visible = defaultFeatures;
+                _cameraWidget.Visible = defaultFeatures;
+                _cameraButton.Visible = defaultFeatures;
+                _orthographicModeButton.Visible = defaultFeatures;
+                Task.Enabled = defaultFeatures;
+                UseAutomaticTaskManagement = defaultFeatures;
+                ShowDefaultSceneActors = defaultFeatures;
+                TintColor = defaultFeatures ? Color.White : Color.Transparent;
+                UIModeToggled?.Invoke(_showUI);
+            }
+        }
 
         /// <summary>
         /// Drag and drop handlers
@@ -138,6 +210,11 @@ namespace FlaxEditor.Viewport
             _uiRoot.IndexInParent = 0; // Move viewport down below other widgets in the viewport
             _uiParentLink = _uiRoot.UIRoot;
 
+            // UI mode buton
+            _uiModeButton = ViewWidgetShowMenu.AddButton("UI Mode", (button) => ShowUI = button.Checked);
+            _uiModeButton.AutoCheck = true;
+            _uiModeButton.VisibleChanged += control => (control as ContextMenuButton).Checked = ShowUI;
+
             EditorGizmoViewport.AddGizmoViewportWidgets(this, TransformGizmo);
 
             // Setup input actions
@@ -146,58 +223,8 @@ namespace FlaxEditor.Viewport
             SetUpdate(ref _update, OnUpdate);
         }
 
-        /// <summary>
-        /// Updates the viewport's gizmos, especially to toggle between 3D and UI editing modes.
-        /// </summary>
-        internal void UpdateGizmoMode()
-        {
-            // Skip if gizmo mode was unmodified
-            if (_hasUILinked == _hasUILinkedCached)
-                return;
-            _hasUILinkedCached = _hasUILinked;
-
-            if (_hasUILinked)
-            {
-                // UI widget
-                Gizmos.Active = null;
-                ViewportCamera = new UIEditorCamera { UIEditor = _uiRoot };
-
-                // Hide 3D visuals
-                ShowEditorPrimitives = false;
-                ShowDefaultSceneActors = false;
-                ShowDebugDraw = false;
-
-                // Show whole UI on startup
-                var canvas = (CanvasRootControl)_uiParentLink.Children.FirstOrDefault(x => x is CanvasRootControl);
-                if (canvas != null)
-                    ViewportCamera.ShowActor(canvas.Canvas);
-                else if (Instance is UIControl)
-                    ViewportCamera.ShowActor(Instance);
-            }
-            else
-            {
-                // Generic prefab
-                Gizmos.Active = TransformGizmo;
-                ViewportCamera = new FPSCamera();
-            }
-
-            // Update default components usage
-            bool defaultFeatures = !_hasUILinked;
-            _disableInputUpdate = _hasUILinked;
-            _spritesRenderer.Enabled = defaultFeatures;
-            SelectionOutline.Enabled = defaultFeatures;
-            _showDefaultSceneButton.Visible = defaultFeatures;
-            _cameraWidget.Visible = defaultFeatures;
-            _cameraButton.Visible = defaultFeatures;
-            _orthographicModeButton.Visible = defaultFeatures;
-            Task.Enabled = defaultFeatures;
-            UseAutomaticTaskManagement = defaultFeatures;
-            TintColor = defaultFeatures ? Color.White : Color.Transparent;
-        }
-
         private void OnUpdate(float deltaTime)
         {
-            UpdateGizmoMode();
             for (int i = 0; i < Gizmos.Count; i++)
             {
                 Gizmos[i].Update(deltaTime);

Source/Editor/Windows/Assets/AnimationWindow.cs

@@ -2,6 +2,7 @@
 
 using System;
 using System.Globalization;
+using System.IO;
 using System.Reflection;
 using System.Xml;
 using FlaxEditor.Content;
@@ -210,8 +211,11 @@ namespace FlaxEditor.Windows.Assets
                         var importSettingsValues = new ValueContainer(new ScriptMemberInfo(importSettingsField)) { proxy.ImportSettings };
                         group.Object(importSettingsValues);
 
+                        // Creates the import path UI
+                        Utilities.Utils.CreateImportPathUI(layout, proxy.Window.Item as BinaryAssetItem);
+
                         layout.Space(5);
-                        var reimportButton = group.Button("Reimport");
+                        var reimportButton = layout.Button("Reimport");
                         reimportButton.Button.Clicked += () => ((PropertiesProxy)Values[0]).Reimport();
                     }
                 }

Source/Editor/Windows/Assets/AudioClipWindow.cs

@@ -1,5 +1,6 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
+using System.IO;
 using System.Xml;
 using FlaxEditor.Content;
 using FlaxEditor.Content.Import;
@@ -100,7 +101,10 @@ namespace FlaxEditor.Windows.Assets
 
                     base.Initialize(layout);
 
-                    layout.Space(10);
+                    // Creates the import path UI
+                    Utilities.Utils.CreateImportPathUI(layout, window.Item as BinaryAssetItem);
+
+                    layout.Space(5);
                     var reimportButton = layout.Button("Reimport");
                     reimportButton.Button.Clicked += () => ((PropertiesProxy)Values[0]).Reimport();
                 }

Source/Editor/Windows/Assets/CubeTextureWindow.cs

@@ -1,5 +1,6 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
+using System.IO;
 using System.Xml;
 using FlaxEditor.Content;
 using FlaxEditor.Content.Import;
@@ -53,7 +54,10 @@ namespace FlaxEditor.Windows.Assets
 
                     base.Initialize(layout);
 
-                    layout.Space(10);
+                    // Creates the import path UI
+                    Utilities.Utils.CreateImportPathUI(layout, window.Item as BinaryAssetItem);
+
+                    layout.Space(5);
                     var reimportButton = layout.Button("Reimport");
                     reimportButton.Button.Clicked += () => ((PropertiesProxy)Values[0]).Reimport();
                 }

Source/Editor/Windows/Assets/ModelWindow.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 using System.Collections.Generic;
+using System.IO;
 using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
@@ -758,8 +759,11 @@ namespace FlaxEditor.Windows.Assets
                         var importSettingsValues = new ValueContainer(new ScriptMemberInfo(importSettingsField)) { proxy.ImportSettings };
                         group.Object(importSettingsValues);
 
+                        // Creates the import path UI
+                        Utilities.Utils.CreateImportPathUI(layout, proxy.Window.Item as BinaryAssetItem);
+
                         layout.Space(5);
-                        var reimportButton = group.Button("Reimport");
+                        var reimportButton = layout.Button("Reimport");
                         reimportButton.Button.Clicked += () => ((ImportPropertiesProxy)Values[0]).Reimport();
                     }
                 }

Source/Editor/Windows/Assets/PrefabWindow.cs

@@ -355,13 +355,22 @@ namespace FlaxEditor.Windows.Assets
         private void OnPrefabOpened()
         {
             _viewport.Prefab = _asset;
-            _viewport.UpdateGizmoMode();
+            if (Editor.ProjectCache.TryGetCustomData($"UIMode:{_asset.ID}", out bool value))
+                _viewport.SetInitialUIMode(value);
+            else
+                _viewport.SetInitialUIMode(_viewport._hasUILinked);
+            _viewport.UIModeToggled += OnUIModeToggled;
             Graph.MainActor = _viewport.Instance;
             Selection.Clear();
             Select(Graph.Main);
             Graph.Root.TreeNode.Expand(true);
         }
 
+        private void OnUIModeToggled(bool value)
+        {
+            Editor.ProjectCache.SetCustomData($"UIMode:{_asset.ID}", value);
+        }
+
         /// <inheritdoc />
         public override void Save()
         {

Source/Editor/Windows/Assets/SkinnedModelWindow.cs

@@ -1023,8 +1023,11 @@ namespace FlaxEditor.Windows.Assets
                         var importSettingsValues = new ValueContainer(new ScriptMemberInfo(importSettingsField)) { proxy.ImportSettings };
                         group.Object(importSettingsValues);
 
+                        // Creates the import path UI
+                        Utilities.Utils.CreateImportPathUI(layout, proxy.Window.Item as BinaryAssetItem);
+
                         layout.Space(5);
-                        var reimportButton = group.Button("Reimport");
+                        var reimportButton = layout.Button("Reimport");
                         reimportButton.Button.Clicked += () => ((ImportPropertiesProxy)Values[0]).Reimport();
                     }
                 }

Source/Editor/Windows/Assets/SpriteAtlasWindow.cs

@@ -1,5 +1,6 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
+using System.IO;
 using System.Linq;
 using System.Xml;
 using FlaxEditor.Content;
@@ -110,9 +111,19 @@ namespace FlaxEditor.Windows.Assets
             {
                 public override void Initialize(LayoutElementsContainer layout)
                 {
+                    var proxy = (PropertiesProxy)Values[0];
+                    if (proxy._window == null)
+                    {
+                        layout.Label("Loading...", TextAlignment.Center);
+                        return;
+                    }
+                    
                     base.Initialize(layout);
+                    
+                    // Creates the import path UI
+                    Utilities.Utils.CreateImportPathUI(layout, proxy._window.Item as BinaryAssetItem);
 
-                    layout.Space(10);
+                    layout.Space(5);
                     var reimportButton = layout.Button("Reimport");
                     reimportButton.Button.Clicked += () => ((PropertiesProxy)Values[0]).Reimport();
                 }

Source/Editor/Windows/Assets/TextureWindow.cs

@@ -1,5 +1,6 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
+using System.IO;
 using System.Xml;
 using FlaxEditor.Content;
 using FlaxEditor.Content.Import;
@@ -134,11 +135,21 @@ namespace FlaxEditor.Windows.Assets
             {
                 public override void Initialize(LayoutElementsContainer layout)
                 {
+                    var proxy = (ImportPropertiesProxy)Values[0];
+                    if (proxy._window == null)
+                    {
+                        layout.Label("Loading...", TextAlignment.Center);
+                        return;
+                    }
+
                     // Import settings
                     base.Initialize(layout);
 
+                    // Creates the import path UI
+                    Utilities.Utils.CreateImportPathUI(layout, proxy._window.Item as BinaryAssetItem);
+
                     // Reimport
-                    layout.Space(10);
+                    layout.Space(5);
                     var reimportButton = layout.Button("Reimport");
                     reimportButton.Button.Clicked += () => ((ImportPropertiesProxy)Values[0]).Reimport();
                 }

Source/Editor/Windows/GameWindow.cs

@@ -23,6 +23,8 @@ namespace FlaxEditor.Windows
         private readonly GameRoot _guiRoot;
         private bool _showGUI = true;
         private bool _showDebugDraw = false;
+        private bool _audioMuted = false;
+        private float _audioVolume = 1;
         private bool _isMaximized = false, _isUnlockingMouse = false;
         private bool _isFloating = false, _isBorderless = false;
         private bool _cursorVisible = true;
@@ -91,6 +93,35 @@ namespace FlaxEditor.Windows
             set => _showDebugDraw = value;
         }
 
+
+        /// <summary>
+        /// Gets or set a value indicating whether Audio is muted.
+        /// </summary>
+        public bool AudioMuted
+        {
+            get => _audioMuted;
+            set
+            {
+                Audio.MasterVolume = value ? 0 : AudioVolume;
+                _audioMuted = value;
+            }
+        }
+
+        /// <summary>
+        /// Gets or sets a value that set the audio volume.
+        /// </summary>
+        public float AudioVolume
+        {
+            get => _audioVolume;
+            set
+            {
+                if (!AudioMuted)
+                    Audio.MasterVolume = value;
+
+                _audioVolume = value;
+            }
+        }
+
         /// <summary>
         /// Gets or sets a value indicating whether the game window is maximized (only in play mode).
         /// </summary>
@@ -646,6 +677,24 @@ namespace FlaxEditor.Windows
                 checkbox.StateChanged += x => ShowDebugDraw = x.Checked;
             }
 
+            menu.AddSeparator();
+
+            // Mute Audio
+            {
+                var button = menu.AddButton("Mute Audio");
+                button.CloseMenuOnClick = false;
+                var checkbox = new CheckBox(140, 2, AudioMuted) { Parent = button };
+                checkbox.StateChanged += x => AudioMuted = x.Checked;
+            }
+
+            // Audio Volume
+            {
+                var button = menu.AddButton("Audio Volume");
+                button.CloseMenuOnClick = false;
+                var slider = new FloatValueBox(AudioVolume, 140, 2, 50, 0, 1) { Parent = button };
+                slider.ValueChanged += () => AudioVolume = slider.Value;
+            }
+
             menu.MinimumWidth = 200;
             menu.AddSeparator();
         }

Source/Editor/Windows/Profiler/CPU.cs

@@ -175,7 +175,7 @@ namespace FlaxEditor.Windows.Profiler
 
         private string FormatCellBytes(object x)
         {
-            return Utilities.Utils.FormatBytesCount((ulong)x);
+            return Utilities.Utils.FormatBytesCount(Convert.ToUInt64(x));
         }
 
         /// <inheritdoc />

Source/Engine/Animations/Animations.cpp

@@ -27,6 +27,7 @@ class AnimationsSystem : public TaskGraphSystem
 {
 public:
     float DeltaTime, UnscaledDeltaTime, Time, UnscaledTime;
+    bool Active;
 
     void Job(int32 index);
     void Execute(TaskGraph* graph) override;
@@ -51,6 +52,7 @@ namespace
 
 AnimationsService AnimationManagerInstance;
 TaskGraphSystem* Animations::System = nullptr;
+ConcurrentSystemLocker Animations::SystemLocker;
 #if USE_EDITOR
 Delegate<Animations::DebugFlowInfo> Animations::DebugFlow;
 #endif
@@ -116,6 +118,10 @@ void AnimationsSystem::Execute(TaskGraph* graph)
 {
     if (AnimationManagerInstance.UpdateList.Count() == 0)
         return;
+    Active = true;
+
+    // Ensure no animation assets can be reloaded/modified during async update
+    Animations::SystemLocker.Begin(false);
 
     // Setup data for async update
     const auto& tickData = Time::Update;
@@ -138,6 +144,8 @@ void AnimationsSystem::Execute(TaskGraph* graph)
 
 void AnimationsSystem::PostExecute(TaskGraph* graph)
 {
+    if (!Active)
+        return;
     PROFILE_CPU_NAMED("Animations.PostExecute");
 
     // Update gameplay
@@ -153,6 +161,8 @@ void AnimationsSystem::PostExecute(TaskGraph* graph)
 
     // Cleanup
     AnimationManagerInstance.UpdateList.Clear();
+    Animations::SystemLocker.End(false);
+    Active = false;
 }
 
 void Animations::AddToUpdate(AnimatedModel* obj)

Source/Engine/Animations/Animations.h

@@ -4,6 +4,7 @@
 
 #include "Engine/Scripting/ScriptingType.h"
 #include "Engine/Core/Delegate.h"
+#include "Engine/Threading/ConcurrentSystemLocker.h"
 
 class TaskGraphSystem;
 class AnimatedModel;
@@ -21,6 +22,9 @@ API_CLASS(Static) class FLAXENGINE_API Animations
     /// </summary>
     API_FIELD(ReadOnly) static TaskGraphSystem* System;
 
+    // Data access locker for animations data.
+    static ConcurrentSystemLocker SystemLocker;
+
 #if USE_EDITOR
     // Data wrapper for the debug flow information.
     API_STRUCT(NoDefault) struct DebugFlowInfo

Source/Engine/Audio/AudioBackendTools.h

@@ -161,7 +161,10 @@ public:
         case 2:
         default: // TODO: implement multi-channel support (eg. 5.1, 7.1)
             outputMatrix[0] = channels[FrontLeft];
-            outputMatrix[sourceChannels + 1] = channels[FrontRight];
+            if (sourceChannels == 1)
+                outputMatrix[1] = channels[FrontRight];
+            else
+                outputMatrix[sourceChannels + 1] = channels[FrontRight];
             break;
         }
     }

Source/Engine/Audio/OpenAL/AudioBackendOAL.cpp

@@ -40,11 +40,17 @@
 
 namespace ALC
 {
+    struct SourceData
+    {
+        AudioDataInfo Format;
+        bool Spatial;
+    };
+
     ALCdevice* Device = nullptr;
     ALCcontext* Context = nullptr;
     AudioBackend::FeatureFlags Features = AudioBackend::FeatureFlags::None;
     CriticalSection Locker;
-    Dictionary<uint32, AudioDataInfo> SourceIDtoFormat;
+    Dictionary<uint32, SourceData> SourcesData;
 
     bool IsExtensionSupported(const char* extension)
     {
@@ -88,32 +94,32 @@ namespace ALC
             alSourcef(sourceID, AL_PITCH, pitch);
             alSourcef(sourceID, AL_SEC_OFFSET, 0.0f);
             alSourcei(sourceID, AL_LOOPING, loop);
-            alSourcei(sourceID, AL_SOURCE_RELATIVE, !spatial);
+            alSourcei(sourceID, AL_SOURCE_RELATIVE, !spatial); // Non-spatial sounds use AL_POSITION for panning
             alSourcei(sourceID, AL_BUFFER, 0);
+#ifdef AL_SOFT_source_spatialize
+            alSourcei(sourceID, AL_SOURCE_SPATIALIZE_SOFT, AL_TRUE); // Always spatialize, fixes multi-channel played as spatial
+#endif
             if (spatial)
             {
-#ifdef AL_SOFT_source_spatialize
-                alSourcei(sourceID, AL_SOURCE_SPATIALIZE_SOFT, AL_TRUE);
-#endif
                 alSourcef(sourceID, AL_ROLLOFF_FACTOR, attenuation);
                 alSourcef(sourceID, AL_DOPPLER_FACTOR, doppler);
                 alSourcef(sourceID, AL_REFERENCE_DISTANCE, FLAX_DST_TO_OAL(minDistance));
                 alSource3f(sourceID, AL_POSITION, FLAX_POS_TO_OAL(position));
                 alSource3f(sourceID, AL_VELOCITY, FLAX_VEL_TO_OAL(Vector3::Zero));
+#ifdef AL_EXT_STEREO_ANGLES
+                const float panAngle = pan * PI_HALF;
+                const ALfloat panAngles[2] = { (ALfloat)(PI / 6.0 - panAngle), (ALfloat)(-PI / 6.0 - panAngle) }; // Angles are specified counter-clockwise in radians
+                alSourcefv(sourceID, AL_STEREO_ANGLES, panAngles);
+#endif
             }
             else
             {
                 alSourcef(sourceID, AL_ROLLOFF_FACTOR, 0.0f);
                 alSourcef(sourceID, AL_DOPPLER_FACTOR, 1.0f);
                 alSourcef(sourceID, AL_REFERENCE_DISTANCE, 0.0f);
-                alSource3f(sourceID, AL_POSITION, 0.0f, 0.0f, 0.0f);
+                alSource3f(sourceID, AL_POSITION, pan, 0, -sqrtf(1.0f - pan * pan));
                 alSource3f(sourceID, AL_VELOCITY, 0.0f, 0.0f, 0.0f);
             }
-#ifdef AL_EXT_STEREO_ANGLES
-            const float panAngle = pan * PI_HALF;
-            const ALfloat panAngles[2] = { (ALfloat)(PI / 6.0 - panAngle), (ALfloat)(-PI / 6.0 - panAngle) }; // Angles are specified counter-clockwise in radians
-            alSourcefv(sourceID, AL_STEREO_ANGLES, panAngles);
-#endif
         }
     }
 
@@ -303,7 +309,9 @@ uint32 AudioBackendOAL::Source_Add(const AudioDataInfo& format, const Vector3& p
 
     // Cache audio data format assigned on source (used in Source_GetCurrentBufferTime)
     ALC::Locker.Lock();
-    ALC::SourceIDtoFormat[sourceID] = format;
+    auto& data = ALC::SourcesData[sourceID];
+    data.Format = format;
+    data.Spatial = spatial;
     ALC::Locker.Unlock();
 
     return sourceID;
@@ -317,18 +325,30 @@ void AudioBackendOAL::Source_Remove(uint32 sourceID)
     ALC_CHECK_ERROR(alDeleteSources);
 
     ALC::Locker.Lock();
-    ALC::SourceIDtoFormat.Remove(sourceID);
+    ALC::SourcesData.Remove(sourceID);
     ALC::Locker.Unlock();
 }
 
 void AudioBackendOAL::Source_VelocityChanged(uint32 sourceID, const Vector3& velocity)
 {
-    alSource3f(sourceID, AL_VELOCITY, FLAX_VEL_TO_OAL(velocity));
+    ALC::Locker.Lock();
+    const bool spatial = ALC::SourcesData[sourceID].Spatial;
+    ALC::Locker.Unlock();
+    if (spatial)
+    {
+        alSource3f(sourceID, AL_VELOCITY, FLAX_VEL_TO_OAL(velocity));
+    }
 }
 
 void AudioBackendOAL::Source_TransformChanged(uint32 sourceID, const Vector3& position, const Quaternion& orientation)
 {
-    alSource3f(sourceID, AL_POSITION, FLAX_POS_TO_OAL(position));
+    ALC::Locker.Lock();
+    const bool spatial = ALC::SourcesData[sourceID].Spatial;
+    ALC::Locker.Unlock();
+    if (spatial)
+    {
+        alSource3f(sourceID, AL_POSITION, FLAX_POS_TO_OAL(position));
+    }
 }
 
 void AudioBackendOAL::Source_VolumeChanged(uint32 sourceID, float volume)
@@ -343,11 +363,21 @@ void AudioBackendOAL::Source_PitchChanged(uint32 sourceID, float pitch)
 
 void AudioBackendOAL::Source_PanChanged(uint32 sourceID, float pan)
 {
+    ALC::Locker.Lock();
+    const bool spatial = ALC::SourcesData[sourceID].Spatial;
+    ALC::Locker.Unlock();
+    if (spatial)
+    {
 #ifdef AL_EXT_STEREO_ANGLES
-    const float panAngle = pan * PI_HALF;
-    const ALfloat panAngles[2] = { (ALfloat)(PI / 6.0 - panAngle), (ALfloat)(-PI / 6.0 - panAngle) }; // Angles are specified counter-clockwise in radians
-    alSourcefv(sourceID, AL_STEREO_ANGLES, panAngles);
+        const float panAngle = pan * PI_HALF;
+        const ALfloat panAngles[2] = { (ALfloat)(PI / 6.0 - panAngle), (ALfloat)(-PI / 6.0 - panAngle) }; // Angles are specified counter-clockwise in radians
+        alSourcefv(sourceID, AL_STEREO_ANGLES, panAngles);
 #endif
+    }
+    else
+    {
+        alSource3f(sourceID, AL_POSITION, pan, 0, -sqrtf(1.0f - pan * pan));
+    }
 }
 
 void AudioBackendOAL::Source_IsLoopingChanged(uint32 sourceID, bool loop)
@@ -357,12 +387,8 @@ void AudioBackendOAL::Source_IsLoopingChanged(uint32 sourceID, bool loop)
 
 void AudioBackendOAL::Source_SpatialSetupChanged(uint32 sourceID, bool spatial, float attenuation, float minDistance, float doppler)
 {
-    alSourcei(sourceID, AL_SOURCE_RELATIVE, !spatial);
     if (spatial)
     {
-#ifdef AL_SOFT_source_spatialize
-        alSourcei(sourceID, AL_SOURCE_SPATIALIZE_SOFT, AL_TRUE);
-#endif
         alSourcef(sourceID, AL_ROLLOFF_FACTOR, attenuation);
         alSourcef(sourceID, AL_DOPPLER_FACTOR, doppler);
         alSourcef(sourceID, AL_REFERENCE_DISTANCE, FLAX_DST_TO_OAL(minDistance));
@@ -411,7 +437,7 @@ float AudioBackendOAL::Source_GetCurrentBufferTime(uint32 sourceID)
     alGetSourcef(sourceID, AL_SEC_OFFSET, &time);
 #else
     ALC::Locker.Lock();
-    AudioDataInfo clipInfo = ALC::SourceIDtoFormat[sourceID];
+    AudioDataInfo clipInfo = ALC::SourcesData[sourceID].Format;
     ALC::Locker.Unlock();
     ALint samplesPlayed;
     alGetSourcei(sourceID, AL_SAMPLE_OFFSET, &samplesPlayed);