Add profile event

#2092

.github/workflows/build_android.yml

@@ -33,4 +33,4 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -printSDKs -arch=ARM64 -platform=Android -configuration=Release -buildtargets=FlaxGame
+        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -printSDKs -dotnet=7 -arch=ARM64 -platform=Android -configuration=Release -buildtargets=FlaxGame

.github/workflows/build_ios.yml

@@ -33,4 +33,4 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        ./Development/Scripts/Mac/CallBuildTool.sh -build -log -arch=ARM64 -platform=iOS -configuration=Release -buildtargets=FlaxGame
+        ./Development/Scripts/Mac/CallBuildTool.sh -build -log -dotnet=7 -arch=ARM64 -platform=iOS -configuration=Release -buildtargets=FlaxGame

.github/workflows/build_linux.yml

@@ -36,7 +36,7 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -printSDKs -arch=x64 -platform=Linux -configuration=Development -buildtargets=FlaxEditor
+        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -printSDKs -dotnet=7 -arch=x64 -platform=Linux -configuration=Development -buildtargets=FlaxEditor
 
   # Game
   game-linux:
@@ -64,4 +64,4 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -printSDKs -arch=x64 -platform=Linux -configuration=Release -buildtargets=FlaxGame
+        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -printSDKs -dotnet=7 -arch=x64 -platform=Linux -configuration=Release -buildtargets=FlaxGame

.github/workflows/build_mac.yml

@@ -30,7 +30,7 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        ./Development/Scripts/Mac/CallBuildTool.sh -build -log -printSDKs -arch=x64 -platform=Mac -configuration=Development -buildtargets=FlaxEditor
+        ./Development/Scripts/Mac/CallBuildTool.sh -build -log -printSDKs -dotnet=7 -arch=x64 -platform=Mac -configuration=Development -buildtargets=FlaxEditor
 
   # Game
   game-mac:
@@ -55,4 +55,4 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        ./Development/Scripts/Mac/CallBuildTool.sh -build -log -printSDKs -arch=x64 -platform=Mac -configuration=Release -buildtargets=FlaxGame
+        ./Development/Scripts/Mac/CallBuildTool.sh -build -log -printSDKs -dotnet=7 -arch=x64 -platform=Mac -configuration=Release -buildtargets=FlaxGame

.github/workflows/build_windows.yml

@@ -30,7 +30,7 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -printSDKs -arch=x64 -platform=Windows -configuration=Development -buildtargets=FlaxEditor
+        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -printSDKs -dotnet=7 -arch=x64 -platform=Windows -configuration=Development -buildtargets=FlaxEditor
 
   # Game
   game-windows:
@@ -55,4 +55,4 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -printSDKs -arch=x64 -platform=Windows -configuration=Release -buildtargets=FlaxGame
+        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -printSDKs -dotnet=7 -arch=x64 -platform=Windows -configuration=Release -buildtargets=FlaxGame

.github/workflows/tests.yml

@@ -34,8 +34,8 @@ jobs:
         sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev build-essential gettext libtool libtool-bin libpulse-dev libasound2-dev libjack-dev portaudio19-dev
     - name: Build
       run: |
-        ./GenerateProjectFiles.sh -vs2022 -log -verbose -printSDKs
+        ./GenerateProjectFiles.sh -vs2022 -log -verbose -printSDKs -dotnet=7
-        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -arch=x64 -platform=Linux -configuration=Development -buildtargets=FlaxTestsTarget
+        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -dotnet=7 -arch=x64 -platform=Linux -configuration=Development -buildtargets=FlaxTestsTarget
         dotnet msbuild Source/Tools/Flax.Build.Tests/Flax.Build.Tests.csproj /m /t:Restore,Build /p:Configuration=Debug /p:Platform=AnyCPU /nologo
         dotnet msbuild Source/Tools/Flax.Build.Tests/Flax.Build.Tests.csproj /m /t:Restore,Build /p:Configuration=Debug /p:Platform=AnyCPU /nologo
     - name: Test
@@ -48,7 +48,7 @@ jobs:
         dotnet test -f net7.0 Binaries/Tests/FlaxEngine.CSharp.dll
     - name: Test UseLargeWorlds
       run: |
-        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -arch=x64 -platform=Linux -configuration=Development -buildtargets=FlaxTestsTarget -UseLargeWorlds=true
+        ./Development/Scripts/Linux/CallBuildTool.sh -build -log -dotnet=7 -arch=x64 -platform=Linux -configuration=Development -buildtargets=FlaxTestsTarget -UseLargeWorlds=true
         ${GITHUB_WORKSPACE}/Binaries/Editor/Linux/Development/FlaxTests
 
   # Tests on Windows
@@ -72,8 +72,8 @@ jobs:
         git lfs pull
     - name: Build
       run: |
-        .\GenerateProjectFiles.bat -vs2022 -log -verbose -printSDKs
+        .\GenerateProjectFiles.bat -vs2022 -log -verbose -printSDKs -dotnet=7
-        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -arch=x64 -platform=Windows -configuration=Development -buildtargets=FlaxTestsTarget
+        .\Development\Scripts\Windows\CallBuildTool.bat -build -log -dotnet=7 -arch=x64 -platform=Windows -configuration=Development -buildtargets=FlaxTestsTarget
         dotnet msbuild Source\Tools\Flax.Build.Tests\Flax.Build.Tests.csproj /m /t:Restore,Build /p:Configuration=Debug /p:Platform=AnyCPU /nologo
     - name: Test
       run: |

.gitignore

@@ -12,6 +12,7 @@ Source/*.csproj
 /Package_*/
 !Source/Engine/Debug
 /Source/Platforms/Editor/Linux/Mono/etc/mono/registry
+PackageEditor_Cert.command
 PackageEditor_Cert.bat
 PackagePlatforms_Cert.bat
 

Content/Editor/Scripting/ScriptTemplate.cs

@@ -2,35 +2,34 @@
 using System.Collections.Generic;
 using FlaxEngine;
 
-namespace %namespace%
+namespace %namespace%;
+
+/// <summary>
+/// %class% Script.
+/// </summary>
+public class %class% : Script
 {
-    /// <summary>
+    /// <inheritdoc/>
-    /// %class% Script.
+    public override void OnStart()
-    /// </summary>
-    public class %class% : Script
     {
-        /// <inheritdoc/>
+        // Here you can add code that needs to be called when script is created, just before the first game update
-        public override void OnStart()
+    }
-        {
+    
-            // Here you can add code that needs to be called when script is created, just before the first game update
+    /// <inheritdoc/>
-        }
+    public override void OnEnable()
-        
+    {
-        /// <inheritdoc/>
+        // Here you can add code that needs to be called when script is enabled (eg. register for events)
-        public override void OnEnable()
+    }
-        {
-            // Here you can add code that needs to be called when script is enabled (eg. register for events)
-        }
 
-        /// <inheritdoc/>
+    /// <inheritdoc/>
-        public override void OnDisable()
+    public override void OnDisable()
-        {
+    {
-            // Here you can add code that needs to be called when script is disabled (eg. unregister from events)
+        // Here you can add code that needs to be called when script is disabled (eg. unregister from events)
-        }
+    }
 
-        /// <inheritdoc/>
+    /// <inheritdoc/>
-        public override void OnUpdate()
+    public override void OnUpdate()
-        {
+    {
-            // Here you can add code that needs to be called every frame
+        // Here you can add code that needs to be called every frame
-        }
     }
 }

Development/Scripts/Windows/CallBuildTool.bat

@@ -11,16 +11,6 @@ for %%I in (Source\Logo.png) do if %%~zI LSS 2000 (
 call "Development\Scripts\Windows\GetMSBuildPath.bat"
 if errorlevel 1 goto Error_NoVisualStudioEnvironment
 
-if not exist "%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" goto Compile
-for /f "delims=" %%i in ('"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere" -latest -products * -requires Microsoft.Component.MSBuild -property installationPath') do (
-	for %%j in (15.0, Current) do (
-		if exist "%%i\MSBuild\%%j\Bin\MSBuild.exe" (
-			set MSBUILD_PATH="%%i\MSBuild\%%j\Bin\MSBuild.exe"
-			goto Compile
-		)
-	)
-)
-
 :Compile
 md Cache\Intermediate >nul 2>nul
 dir /s /b Source\Tools\Flax.Build\*.cs >Cache\Intermediate\Flax.Build.Files.txt
@@ -44,7 +34,7 @@ goto Exit
 echo CallBuildTool ERROR: The script is in invalid directory.
 goto Exit
 :Error_NoVisualStudioEnvironment
-echo CallBuildTool ERROR: Missing Visual Studio 2015 or newer.
+echo CallBuildTool ERROR: Missing Visual Studio 2022 or newer.
 goto Exit
 :Error_CompilationFailed
 echo CallBuildTool ERROR: Failed to compile Flax.Build project.

Development/Scripts/Windows/GetMSBuildPath.bat

@@ -4,66 +4,26 @@ rem Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
 set MSBUILD_PATH=
 
+rem Look for MSBuild version 17.0 or later
 if not exist "%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere.exe" goto VsWhereNotFound
-for /f "delims=" %%i in ('"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere" -latest -products * -requires Microsoft.Component.MSBuild -property installationPath') do (
+for /f "delims=" %%i in ('"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere" -version 17.0 -latest -products * -requires Microsoft.Component.MSBuild -property installationPath') do (
-	if exist "%%i\MSBuild\15.0\Bin\MSBuild.exe" (
-		set MSBUILD_PATH="%%i\MSBuild\15.0\Bin\MSBuild.exe"
-		goto End
-	)
-)
-for /f "delims=" %%i in ('"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere" -latest -prerelease -products * -requires Microsoft.Component.MSBuild -property installationPath') do (
-	if exist "%%i\MSBuild\15.0\Bin\MSBuild.exe" (
-		set MSBUILD_PATH="%%i\MSBuild\15.0\Bin\MSBuild.exe"
-		goto End
-	)
 	if exist "%%i\MSBuild\Current\Bin\MSBuild.exe" (
 		set MSBUILD_PATH="%%i\MSBuild\Current\Bin\MSBuild.exe"
 		goto End
 	)
 )
-:VsWhereNotFound
 
-if exist "%ProgramFiles(x86)%\MSBuild\14.0\bin\MSBuild.exe" (
+rem Look for MSBuild version 17.0 or later in pre-release versions
-	set MSBUILD_PATH="%ProgramFiles(x86)%\MSBuild\14.0\bin\MSBuild.exe"
+for /f "delims=" %%i in ('"%ProgramFiles(x86)%\Microsoft Visual Studio\Installer\vswhere" -version 17.0 -latest -prerelease -products * -requires Microsoft.Component.MSBuild -property installationPath') do (
-	goto End
+	if exist "%%i\MSBuild\Current\Bin\MSBuild.exe" (
+		set MSBUILD_PATH="%%i\MSBuild\Current\Bin\MSBuild.exe"
+		goto End
+	)
 )
-
+echo GetMSBuildPath ERROR: Could not find MSBuild version 17.0 or later.
-call :GetInstallPath Microsoft\VisualStudio\SxS\VS7 15.0 MSBuild\15.0\bin\MSBuild.exe
+exit /B 1
-if not errorlevel 1 goto End
+:VsWhereNotFound
-call :GetInstallPath Microsoft\MSBuild\ToolsVersions\14.0 MSBuildToolsPath MSBuild.exe
+echo GetMSBuildPath ERROR: vswhere.exe was not found.
-if not errorlevel 1 goto End
-call :GetInstallPath Microsoft\MSBuild\ToolsVersions\12.0 MSBuildToolsPath MSBuild.exe
-if not errorlevel 1 goto End
-call :GetInstallPath Microsoft\MSBuild\ToolsVersions\4.0 MSBuildToolsPath MSBuild.exe
-if not errorlevel 1 goto End
-
 exit /B 1
 :End
-exit /B 0
+exit /B 0
-
-:GetInstallPath
-for /f "tokens=2,*" %%A in ('REG.exe query HKCU\SOFTWARE\%1 /v %2 2^>Nul') do (
-	if exist "%%B%%3" (
-		set MSBUILD_PATH="%%B%3"
-		exit /B 0
-	)
-)
-for /f "tokens=2,*" %%A in ('REG.exe query HKLM\SOFTWARE\%1 /v %2 2^>Nul') do (
-	if exist "%%B%3" (
-		set MSBUILD_PATH="%%B%3"
-		exit /B 0
-	)
-)
-for /f "tokens=2,*" %%A in ('REG.exe query HKCU\SOFTWARE\Wow6432Node\%1 /v %2 2^>Nul') do (
-	if exist "%%B%%3" (
-		set MSBUILD_PATH="%%B%3"
-		exit /B 0
-	)
-)
-for /f "tokens=2,*" %%A in ('REG.exe query HKLM\SOFTWARE\Wow6432Node\%1 /v %2 2^>Nul') do (
-	if exist "%%B%3" (
-		set MSBUILD_PATH="%%B%3"
-		exit /B 0
-	)
-)
-exit /B 1

Flax.flaxproj

@@ -2,8 +2,9 @@
   "Name": "Flax",
   "Version": {
     "Major": 1,
-    "Minor": 6,
+    "Minor": 7,
-    "Build": 6344
+    "Revision": 2,
+    "Build": 6407
   },
   "Company": "Flax",
   "Copyright": "Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.",

Flax.sln.DotSettings

@@ -248,6 +248,7 @@
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=bitangent/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=bitangents/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Bokeh/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=borderless/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=BRDF/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=coeff/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=colliders/@EntryIndexedValue">True</s:Boolean>
@@ -255,6 +256,8 @@
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=comperand/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=coord/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=cubemap/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Deformer/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=deformers/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=defragmentation/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Delaunay/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Defocus/@EntryIndexedValue">True</s:Boolean>
@@ -290,6 +293,8 @@
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=lightmaps/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Linearize/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=lods/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=Marshallable/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=marshallers/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=mclass/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=memcpy/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=metalness/@EntryIndexedValue">True</s:Boolean>
@@ -318,6 +323,7 @@
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=raycast/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=raycasting/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=raycasts/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/UserDictionary/Words/=reachability/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=readback/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=Reimports/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/UserDictionary/Words/=reimported/@EntryIndexedValue">True</s:Boolean>

GenerateProjectFiles.bat

@@ -1,15 +1,22 @@
 @echo off
-
+:: Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
-rem Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
 setlocal
 pushd
+
 echo Generating Flax Engine project files...
 
-rem Run Flax.Build to generate Visual Studio solution and project files (also pass the arguments)
+:: Change the path to the script root
-call "Development\Scripts\Windows\CallBuildTool.bat" -genproject %*
+cd /D "%~dp0"
+
+:: Run Flax.Build to generate Visual Studio solution and project files (also pass the arguments)
+call "Development\Scripts\Windows\CallBuildTool.bat" -genproject  %*
 if errorlevel 1 goto BuildToolFailed
 
+:: Build bindings for all editor configurations
+echo Building C# bindings...
+Binaries\Tools\Flax.Build.exe -build -BuildBindingsOnly -arch=x64 -platform=Windows --buildTargets=FlaxEditor
+
 popd
 echo Done!
 exit /B 0

GenerateProjectFiles.command

@@ -10,3 +10,8 @@ cd "`dirname "$0"`"
 
 # Run Flax.Build to generate project files (also pass the arguments)
 bash ./Development/Scripts/Mac/CallBuildTool.sh --genproject "$@"
+
+# Build bindings for all editor configurations
+echo Building C# bindings...
+# TODO: Detect the correct architecture here
+Binaries/Tools/Flax.Build -build -BuildBindingsOnly -arch=ARM64 -platform=Mac --buildTargets=FlaxEditor

GenerateProjectFiles.sh

@@ -10,3 +10,8 @@ cd "`dirname "$0"`"
 
 # Run Flax.Build to generate project files (also pass the arguments)
 bash ./Development/Scripts/Linux/CallBuildTool.sh --genproject "$@"
+
+# Build bindings for all editor configurations
+echo Building C# bindings...
+# TODO: Detect the correct architecture here
+Binaries/Tools/Flax.Build -build -BuildBindingsOnly -arch=x64 -platform=Linux --buildTargets=FlaxEditor

PackageAll.bat

@@ -7,7 +7,7 @@ pushd
 echo Performing the full package...
 
 rem Run the build tool.
-call "Development\Scripts\Windows\CallBuildTool.bat" -deploy -deployEditor -deployPlatforms -verbose -log -logFile="Cache\Intermediate\PackageLog.txt" %*
+call "Development\Scripts\Windows\CallBuildTool.bat" -deploy -deployEditor -deployPlatforms -dotnet=7 -verbose -log -logFile="Cache\Intermediate\PackageLog.txt" %*
 if errorlevel 1 goto BuildToolFailed
 
 popd

PackageEditor.bat

@@ -7,7 +7,7 @@ pushd
 echo Building and packaging Flax Editor...
 
 rem Run the build tool.
-call "Development\Scripts\Windows\CallBuildTool.bat" -deploy -deployEditor -verbose -log -logFile="Cache\Intermediate\PackageLog.txt" %*
+call "Development\Scripts\Windows\CallBuildTool.bat" -deploy -deployEditor -dotnet=7 -verbose -log -logFile="Cache\Intermediate\PackageLog.txt" %*
 if errorlevel 1 goto BuildToolFailed
 
 popd

PackageEditor.command

@@ -9,4 +9,4 @@ echo Building and packaging Flax Editor...
 cd "`dirname "$0"`"
 
 # Run Flax.Build (also pass the arguments)
-bash ./Development/Scripts/Mac/CallBuildTool.sh --deploy --deployEditor --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"
+bash ./Development/Scripts/Mac/CallBuildTool.sh --deploy --deployEditor --dotnet=7 --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"

PackageEditor.sh

@@ -9,4 +9,4 @@ echo Building and packaging Flax Editor...
 cd "`dirname "$0"`"
 
 # Run Flax.Build (also pass the arguments)
-bash ./Development/Scripts/Linux/CallBuildTool.sh --deploy --deployEditor --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"
+bash ./Development/Scripts/Linux/CallBuildTool.sh --deploy --deployEditor --dotnet=7 --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"

PackagePlatforms.bat

@@ -7,7 +7,7 @@ pushd
 echo Building and packaging platforms data...
 
 rem Run the build tool.
-call "Development\Scripts\Windows\CallBuildTool.bat" -deploy -deployPlatforms -verbose -log -logFile="Cache\Intermediate\PackageLog.txt" %*
+call "Development\Scripts\Windows\CallBuildTool.bat" -deploy -deployPlatforms -dotnet=7 -verbose -log -logFile="Cache\Intermediate\PackageLog.txt" %*
 if errorlevel 1 goto BuildToolFailed
 
 popd

PackagePlatforms.command

@@ -9,4 +9,4 @@ echo Building and packaging platforms data...
 cd "`dirname "$0"`"
 
 # Run Flax.Build (also pass the arguments)
-bash ./Development/Scripts/Mac/CallBuildTool.sh --deploy --deployPlatforms --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"
+bash ./Development/Scripts/Mac/CallBuildTool.sh --deploy --deployPlatforms --dotnet=7 --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"

PackagePlatforms.sh

@@ -9,4 +9,4 @@ echo Building and packaging platforms data...
 cd "`dirname "$0"`"
 
 # Run Flax.Build (also pass the arguments)
-bash ./Development/Scripts/Linux/CallBuildTool.sh --deploy --deployPlatforms --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"
+bash ./Development/Scripts/Linux/CallBuildTool.sh --deploy --deployPlatforms --dotnet=7 --verbose --log --logFile="Cache/Intermediate/PackageLog.txt" "$@"

README.md

@@ -4,7 +4,7 @@
 <a href="https://flaxengine.com/discord"><img src="https://discordapp.com/api/guilds/437989205315158016/widget.png"/></a>
 
 Flax Engine is a high quality modern 3D game engine written in C++ and C#.
-From stunning graphics to powerful scripts - Flax can give everything for your games. Designed for fast workflow with many ready to use features waiting for you right now. To learn more see the website ([www.flaxengine.com](https://flaxengine.com)).
+From stunning graphics to powerful scripts, it's designed for fast workflow with many ready-to-use features waiting for you right now. To learn more see the website ([www.flaxengine.com](https://flaxengine.com)).
 
 This repository contains full source code of the Flax Engine (excluding NDA-protected platforms support). Anyone is welcome to contribute or use the modified source in Flax-based games.
 
@@ -31,19 +31,20 @@ 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 7 SDK (via Visual Studio Installer or [from web](https://dotnet.microsoft.com/en-us/download/dotnet/7.0))
+* Install .NET 7 SDK for **Windows x64** (via Visual Studio Installer or [from web](https://dotnet.microsoft.com/en-us/download/dotnet/7.0))
 * Install Git with LFS
 * Clone repo (with LFS)
 * Run **GenerateProjectFiles.bat**
 * Open `Flax.sln` and set solution configuration to **Editor.Development** and solution platform to **Win64**
 * Set Flax (C++) or FlaxEngine (C#) as startup project
 * Compile Flax project (hit F7 or CTRL+Shift+B)
+* Optionally set Debug Type to **Managed Only (.NET Core)** to debug C#-only, or **Mixed (.NET Core)** to debug both C++ and C#
 * Run Flax (hit F5 key)
 
 ## Linux
 
 * Install Visual Studio Code
-* Install .Net 7 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/7.0](https://dotnet.microsoft.com/en-us/download/dotnet/7.0))
+* Install .NET 7 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/7.0](https://dotnet.microsoft.com/en-us/download/dotnet/7.0))
   * Ubuntu: `sudo apt install dotnet-sdk-7.0`
 * Install Vulkan SDK ([https://vulkan.lunarg.com/](https://vulkan.lunarg.com/))
   * Ubuntu: `sudo apt install vulkan-sdk`
@@ -66,7 +67,7 @@ Follow the instructions below to compile and run the engine from source.
 ## Mac
 
 * Install XCode
-* Install .Net 7 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/7.0](https://dotnet.microsoft.com/en-us/download/dotnet/7.0))
+* Install .NET 7 SDK ([https://dotnet.microsoft.com/en-us/download/dotnet/7.0](https://dotnet.microsoft.com/en-us/download/dotnet/7.0))
 * Install Vulkan SDK ([https://vulkan.lunarg.com/](https://vulkan.lunarg.com/))
 * Clone repo (with LFS)
 * Run `GenerateProjectFiles.command`

Source/Editor/Content/AssetPickerValidator.cs

@@ -0,0 +1,292 @@
+using System;
+using System.IO;
+using FlaxEditor.Scripting;
+using FlaxEngine;
+using FlaxEngine.Utilities;
+
+namespace FlaxEditor.Content;
+
+/// <summary>
+/// Manages and converts the selected content item to the appropriate types. Useful for drag operations.
+/// </summary>
+public class AssetPickerValidator : IContentItemOwner
+{
+    private Asset _selected;
+    private ContentItem _selectedItem;
+    private ScriptType _type;
+    private string _fileExtension;
+
+    /// <summary>
+    /// Gets or sets the selected item.
+    /// </summary>
+    public ContentItem SelectedItem
+    {
+        get => _selectedItem;
+        set
+        {
+            if (_selectedItem == value)
+                return;
+            if (value == null)
+            {
+                if (_selected == null && _selectedItem is SceneItem)
+                {
+                    // Deselect scene reference
+                    _selectedItem.RemoveReference(this);
+                    _selectedItem = null;
+                    _selected = null;
+                    OnSelectedItemChanged();
+                    return;
+                }
+
+                // Deselect
+                _selectedItem?.RemoveReference(this);
+                _selectedItem = null;
+                _selected = null;
+                OnSelectedItemChanged();
+            }
+            else if (value is SceneItem item)
+            {
+                if (_selectedItem == item)
+                    return;
+                if (!IsValid(item))
+                    item = null;
+
+                // Change value to scene reference (cannot load asset because scene can be already loaded - duplicated ID issue)
+                _selectedItem?.RemoveReference(this);
+                _selectedItem = item;
+                _selected = null;
+                _selectedItem?.AddReference(this);
+                OnSelectedItemChanged();
+            }
+            else if (value is AssetItem assetItem)
+            {
+                SelectedAsset = FlaxEngine.Content.LoadAsync(assetItem.ID);
+            }
+            else
+            {
+                // Change value
+                _selectedItem?.RemoveReference(this);
+                _selectedItem = value;
+                _selected = null;
+                OnSelectedItemChanged();
+            }
+        }
+    }
+
+    /// <summary>
+    /// Gets or sets the selected asset identifier.
+    /// </summary>
+    public Guid SelectedID
+    {
+        get
+        {
+            if (_selected != null)
+                return _selected.ID;
+            if (_selectedItem is AssetItem assetItem)
+                return assetItem.ID;
+            return Guid.Empty;
+        }
+        set => SelectedItem = Editor.Instance.ContentDatabase.FindAsset(value);
+    }
+
+    /// <summary>
+    /// Gets or sets the selected content item path.
+    /// </summary>
+    public string SelectedPath
+    {
+        get
+        {
+            string path = _selectedItem?.Path ?? _selected?.Path;
+            if (path != null)
+            {
+                // Convert into path relative to the project (cross-platform)
+                var projectFolder = Globals.ProjectFolder;
+                if (path.StartsWith(projectFolder))
+                    path = path.Substring(projectFolder.Length + 1);
+            }
+            return path;
+        }
+        set
+        {
+            if (string.IsNullOrEmpty(value))
+            {
+                SelectedItem = null;
+            }
+            else
+            {
+                var path = StringUtils.IsRelative(value) ? Path.Combine(Globals.ProjectFolder, value) : value;
+                SelectedItem = Editor.Instance.ContentDatabase.Find(path);
+            }
+        }
+    }
+
+    /// <summary>
+    /// Gets or sets the selected asset object.
+    /// </summary>
+    public Asset SelectedAsset
+    {
+        get => _selected;
+        set
+        {
+            // Check if value won't change
+            if (value == _selected)
+                return;
+
+            // Find item from content database and check it
+            var item = value ? Editor.Instance.ContentDatabase.FindAsset(value.ID) : null;
+            if (item != null && !IsValid(item))
+                item = null;
+
+            // Change value
+            _selectedItem?.RemoveReference(this);
+            _selectedItem = item;
+            _selected = value;
+            _selectedItem?.AddReference(this);
+            OnSelectedItemChanged();
+        }
+    }
+
+    /// <summary>
+    /// Gets or sets the assets types that this picker accepts (it supports types derived from the given type). Use <see cref="ScriptType.Null"/> for generic file picker.
+    /// </summary>
+    public ScriptType AssetType
+    {
+        get => _type;
+        set
+        {
+            if (_type != value)
+            {
+                _type = value;
+
+                // Auto deselect if the current value is invalid
+                if (_selectedItem != null && !IsValid(_selectedItem))
+                    SelectedItem = null;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Gets or sets the content items extensions filter. Null if unused.
+    /// </summary>
+    public string FileExtension
+    {
+        get => _fileExtension;
+        set
+        {
+            if (_fileExtension != value)
+            {
+                _fileExtension = value;
+
+                // Auto deselect if the current value is invalid
+                if (_selectedItem != null && !IsValid(_selectedItem))
+                    SelectedItem = null;
+            }
+        }
+    }
+
+    /// <summary>
+    /// Occurs when selected item gets changed.
+    /// </summary>
+    public event Action SelectedItemChanged;
+
+    /// <summary>
+    /// The custom callback for assets validation. Cane be used to implement a rule for assets to pick.
+    /// </summary>
+    public Func<ContentItem, bool> CheckValid;
+
+    /// <summary>
+    /// Returns whether item is valid.
+    /// </summary>
+    /// <param name="item"></param>
+    /// <returns></returns>
+    public bool IsValid(ContentItem item)
+    {
+        if (_fileExtension != null && !item.Path.EndsWith(_fileExtension))
+            return false;
+        if (CheckValid != null && !CheckValid(item))
+            return false;
+        if (_type == ScriptType.Null)
+            return true;
+
+        if (item is AssetItem assetItem)
+        {
+            // Faster path for binary items (in-built)
+            if (assetItem is BinaryAssetItem binaryItem)
+                return _type.IsAssignableFrom(new ScriptType(binaryItem.Type));
+
+            // Type filter
+            var type = TypeUtils.GetType(assetItem.TypeName);
+            if (_type.IsAssignableFrom(type))
+                return true;
+
+            // Json assets can contain any type of the object defined by the C# type (data oriented design)
+            if (assetItem is JsonAssetItem && (_type.Type == typeof(JsonAsset) || _type.Type == typeof(Asset)))
+                return true;
+
+            // Special case for scene asset references
+            if (_type.Type == typeof(SceneReference) && assetItem is SceneItem)
+                return true;
+        }
+
+        return false;
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="AssetPickerValidator"/> class.
+    /// </summary>
+    public AssetPickerValidator()
+    : this(new ScriptType(typeof(Asset)))
+    {
+    }
+
+    /// <summary>
+    /// Initializes a new instance of the <see cref="AssetPickerValidator"/> class.
+    /// </summary>
+    /// <param name="assetType">The assets types that this picker accepts.</param>
+    public AssetPickerValidator(ScriptType assetType)
+    {
+        _type = assetType;
+    }
+
+    /// <summary>
+    /// Called when selected item gets changed.
+    /// </summary>
+    protected virtual void OnSelectedItemChanged()
+    {
+        SelectedItemChanged?.Invoke();
+    }
+
+    /// <inheritdoc />
+    public void OnItemDeleted(ContentItem item)
+    {
+        // Deselect item
+        SelectedItem = null;
+    }
+
+    /// <inheritdoc />
+    public void OnItemRenamed(ContentItem item)
+    {
+    }
+
+    /// <inheritdoc />
+    public void OnItemReimported(ContentItem item)
+    {
+    }
+
+    /// <inheritdoc />
+    public void OnItemDispose(ContentItem item)
+    {
+        // Deselect item
+        SelectedItem = null;
+    }
+
+    /// <summary>
+    /// Call to remove reference from the selected item.
+    /// </summary>
+    public void OnDestroy()
+    {
+        _selectedItem?.RemoveReference(this);
+        _selectedItem = null;
+        _selected = null;
+    }
+}

Source/Editor/Content/GUI/ContentNavigation.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
 using FlaxEditor.GUI;
+using FlaxEditor.GUI.ContextMenu;
 using FlaxEditor.GUI.Drag;
 using FlaxEngine;
 using FlaxEngine.GUI;
@@ -31,7 +32,7 @@ namespace FlaxEditor.Content.GUI
         : base(x, y, height)
         {
             TargetNode = targetNode;
-            Text = targetNode.NavButtonLabel + "/";
+            Text = targetNode.NavButtonLabel;
         }
 
         /// <inheritdoc />
@@ -72,7 +73,6 @@ namespace FlaxEditor.Content.GUI
 
             if (_dragOverItems == null)
                 _dragOverItems = new DragItems(ValidateDragItem);
-
             _dragOverItems.OnDragEnter(data);
             var result = GetDragEffect(data);
             _validDragOver = result != DragDropEffect.None;
@@ -122,4 +122,70 @@ namespace FlaxEditor.Content.GUI
             return result;
         }
     }
+
+    sealed class ContentNavigationSeparator : ComboBox
+    {
+        public ContentNavigationButton Target;
+
+        public ContentNavigationSeparator(ContentNavigationButton target, float x, float y, float height)
+        {
+            Target = target;
+            Bounds = new Rectangle(x, y, 16, height);
+            Offsets = new Margin(Bounds.X, Bounds.Width, Bounds.Y, Bounds.Height);
+            UpdateTransform();
+
+            MaximumItemsInViewCount = 20;
+            var style = Style.Current;
+            BackgroundColor = style.BackgroundNormal;
+            BackgroundColorHighlighted = BackgroundColor;
+            BackgroundColorSelected = BackgroundColor;
+        }
+
+        protected override ContextMenu OnCreatePopup()
+        {
+            // Update items
+            ClearItems();
+            foreach (var child in Target.TargetNode.Children)
+            {
+                if (child is ContentTreeNode node)
+                {
+                    if (node.Folder.VisibleInHierarchy) // Respect the filter set by ContentFilterConfig.Filter(...)
+                        AddItem(node.Folder.ShortName);
+                }
+            }
+
+            return base.OnCreatePopup();
+        }
+
+        public override void Draw()
+        {
+            var style = Style.Current;
+            var rect = new Rectangle(Float2.Zero, Size);
+            var color = IsDragOver ? style.BackgroundSelected * 0.6f : (_mouseDown ? style.BackgroundSelected : (IsMouseOver ? style.BackgroundHighlighted : Color.Transparent));
+            Render2D.FillRectangle(rect, color);
+            Render2D.DrawSprite(Editor.Instance.Icons.ArrowRight12, new Rectangle(rect.Location.X, rect.Y + rect.Size.Y * 0.25f, rect.Size.X, rect.Size.X), EnabledInHierarchy ? style.Foreground : style.ForegroundDisabled);
+        }
+
+        protected override void OnLayoutMenuButton(ContextMenuButton button, int index, bool construct = false)
+        {
+            button.Icon = Editor.Instance.Icons.FolderClosed32;
+            if (_tooltips != null && _tooltips.Length > index)
+                button.TooltipText = _tooltips[index];
+        }
+
+        protected override void OnItemClicked(int index)
+        {
+            base.OnItemClicked(index);
+
+            var item = _items[index];
+            foreach (var child in Target.TargetNode.Children)
+            {
+                if (child is ContentTreeNode node && node.Folder.ShortName == item)
+                {
+                    Editor.Instance.Windows.ContentWin.Navigate(node);
+                    return;
+                }
+            }
+        }
+    }
 }

Source/Editor/Content/GUI/ContentView.DragDrop.cs

@@ -45,8 +45,14 @@ namespace FlaxEditor.Content.GUI
 
         private void ImportActors(DragActors actors, ContentFolder location)
         {
-            // Use only the first actor
+            foreach (var actorNode in actors.Objects)
-            Editor.Instance.Prefabs.CreatePrefab(actors.Objects[0].Actor);
+            {
+                var actor = actorNode.Actor;
+                if (actors.Objects.Contains(actorNode.ParentNode as ActorNode))
+                    continue;
+
+                Editor.Instance.Prefabs.CreatePrefab(actor, false);
+            }
         }
 
         /// <inheritdoc />
@@ -62,7 +68,7 @@ namespace FlaxEditor.Content.GUI
                 _validDragOver = true;
                 result = DragDropEffect.Copy;
             }
-            else if (_dragActors.HasValidDrag)
+            else if (_dragActors != null && _dragActors.HasValidDrag)
             {
                 _validDragOver = true;
                 result = DragDropEffect.Move;
@@ -88,7 +94,7 @@ namespace FlaxEditor.Content.GUI
                 result = DragDropEffect.Copy;
             }
             // Check if drop actor(s)
-            else if (_dragActors.HasValidDrag)
+            else if (_dragActors != null && _dragActors.HasValidDrag)
             {
                 // Import actors
                 var currentFolder = Editor.Instance.Windows.ContentWin.CurrentViewFolder;

Source/Editor/Content/GUI/ContentView.cs

@@ -220,8 +220,9 @@ namespace FlaxEditor.Content.GUI
             // Remove references and unlink items
             for (int i = 0; i < _items.Count; i++)
             {
-                _items[i].Parent = null;
+                var item = _items[i];
-                _items[i].RemoveReference(this);
+                item.Parent = null;
+                item.RemoveReference(this);
             }
             _items.Clear();
 
@@ -261,11 +262,15 @@ namespace FlaxEditor.Content.GUI
                 ClearItems();
 
             // Add references and link items
-            _items.AddRange(items);
             for (int i = 0; i < items.Count; i++)
             {
-                items[i].Parent = this;
+                var item = items[i];
-                items[i].AddReference(this);
+                if (item.Visible && !_items.Contains(item))
+                {
+                    item.Parent = this;
+                    item.AddReference(this);
+                    _items.Add(item);
+                }
             }
             if (selection != null)
             {
@@ -276,6 +281,8 @@ namespace FlaxEditor.Content.GUI
             // Sort items depending on sortMethod parameter
             _children.Sort(((control, control1) =>
                                {
+                                   if (control == null || control1 == null)
+                                       return 0;
                                    if (sortType == SortType.AlphabeticReverse)
                                    {
                                        if (control.CompareTo(control1) > 0)
@@ -517,8 +524,8 @@ namespace FlaxEditor.Content.GUI
             {
                 int min = _selection.Min(x => x.IndexInParent);
                 int max = _selection.Max(x => x.IndexInParent);
-                min = Mathf.Min(min, item.IndexInParent);
+                min = Mathf.Max(Mathf.Min(min, item.IndexInParent), 0);
-                max = Mathf.Max(max, item.IndexInParent);
+                max = Mathf.Min(Mathf.Max(max, item.IndexInParent), _children.Count - 1);
                 var selection = new List<ContentItem>(_selection);
                 for (int i = min; i <= max; i++)
                 {
@@ -711,7 +718,7 @@ namespace FlaxEditor.Content.GUI
         protected override void PerformLayoutBeforeChildren()
         {
             float width = GetClientArea().Width;
-            float x = 0, y = 0;
+            float x = 0, y = 1;
             float viewScale = _viewScale * 0.97f;
 
             switch (ViewType)
@@ -722,21 +729,22 @@ namespace FlaxEditor.Content.GUI
                 int itemsToFit = Mathf.FloorToInt(width / defaultItemsWidth) - 1;
                 if (itemsToFit < 1)
                     itemsToFit = 1;
-                float itemsWidth = width / Mathf.Max(itemsToFit, 1);
+                int xSpace = 4;
+                float itemsWidth = width / Mathf.Max(itemsToFit, 1) - xSpace;
                 float itemsHeight = itemsWidth / defaultItemsWidth * (ContentItem.DefaultHeight * viewScale);
                 var flooredItemsWidth = Mathf.Floor(itemsWidth);
                 var flooredItemsHeight = Mathf.Floor(itemsHeight);
-                x = itemsToFit == 1 ? 0 : itemsWidth / itemsToFit;
+                x = itemsToFit == 1 ? 1 : itemsWidth / itemsToFit + xSpace;
                 for (int i = 0; i < _children.Count; i++)
                 {
                     var c = _children[i];
                     c.Bounds = new Rectangle(Mathf.Floor(x), Mathf.Floor(y), flooredItemsWidth, flooredItemsHeight);
 
-                    x += itemsWidth + itemsWidth / itemsToFit;
+                    x += (itemsWidth + xSpace) + (itemsWidth + xSpace) / itemsToFit;
                     if (x + itemsWidth > width)
                     {
-                        x = itemsToFit == 1 ? 0 : itemsWidth / itemsToFit;
+                        x = itemsToFit == 1 ? 1 : itemsWidth / itemsToFit + xSpace;
-                        y += itemsHeight + 5;
+                        y += itemsHeight + 7;
                     }
                 }
                 if (x > 0)
@@ -751,7 +759,7 @@ namespace FlaxEditor.Content.GUI
                 {
                     var c = _children[i];
                     c.Bounds = new Rectangle(x, y, width, itemsHeight);
-                    y += itemsHeight + 5;
+                    y += itemsHeight + 1;
                 }
                 y += 40.0f;
 

Source/Editor/Content/Import/AudioImportSettings.cs

@@ -1,144 +1,52 @@
 // Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
-using System.ComponentModel;
+using System.Collections.Generic;
-using System.Reflection;
+using FlaxEditor.CustomEditors.Editors;
-using System.Runtime.InteropServices;
+using FlaxEditor.Scripting;
 using FlaxEngine;
-using FlaxEngine.Interop;
+using FlaxEngine.Tools;
+
+namespace FlaxEngine.Tools
+{
+    partial class AudioTool
+    {
+        partial struct Options
+        {
+            private bool ShowBtiDepth => Format != AudioFormat.Vorbis;
+        }
+    }
+}
+
+namespace FlaxEditor.CustomEditors.Dedicated
+{
+    /// <summary>
+    /// Custom editor for <see cref="FlaxEngine.Tools.AudioTool.Options"/>.
+    /// </summary>
+    [CustomEditor(typeof(FlaxEngine.Tools.AudioTool.Options)), DefaultEditor]
+    public class AudioToolOptionsEditor : GenericEditor
+    {
+        /// <inheritdoc />
+        protected override List<ItemInfo> GetItemsForType(ScriptType type)
+        {
+            // Show both fields and properties
+            return GetItemsForType(type, true, true);
+        }
+    }
+}
 
 namespace FlaxEditor.Content.Import
 {
     /// <summary>
     /// Proxy object to present audio import settings in <see cref="ImportFilesDialog"/>.
     /// </summary>
+    [HideInEditor]
     public class AudioImportSettings
     {
         /// <summary>
-        /// A custom set of bit depth audio import sizes.
+        /// The settings data.
         /// </summary>
-        public enum CustomBitDepth
+        [EditorDisplay(null, EditorDisplayAttribute.InlineStyle)]
-        {
+        public AudioTool.Options Settings = AudioTool.Options.Default;
-            /// <summary>
-            /// The 8.
-            /// </summary>
-            _8 = 8,
-
-            /// <summary>
-            /// The 16.
-            /// </summary>
-            _16 = 16,
-
-            /// <summary>
-            /// The 24.
-            /// </summary>
-            _24 = 24,
-
-            /// <summary>
-            /// The 32.
-            /// </summary>
-            _32 = 32,
-        }
-
-        /// <summary>
-        /// Converts the bit depth to enum.
-        /// </summary>
-        /// <param name="f">The bit depth.</param>
-        /// <returns>The converted enum.</returns>
-        public static CustomBitDepth ConvertBitDepth(int f)
-        {
-            FieldInfo[] fields = typeof(CustomBitDepth).GetFields();
-            for (int i = 0; i < fields.Length; i++)
-            {
-                var field = fields[i];
-                if (field.Name.Equals("value__"))
-                    continue;
-
-                if (f == (int)field.GetRawConstantValue())
-                    return (CustomBitDepth)f;
-            }
-
-            return CustomBitDepth._16;
-        }
-
-        /// <summary>
-        /// The audio data format to import the audio clip as. 
-        /// </summary>
-        [EditorOrder(10), DefaultValue(AudioFormat.Vorbis), Tooltip("The audio data format to import the audio clip as.")]
-        public AudioFormat Format { get; set; } = AudioFormat.Vorbis;
-
-        /// <summary>
-        /// The audio data compression quality. Used only if target format is using compression. Value 0 means the smallest size, value 1 means the best quality.
-        /// </summary>
-        [EditorOrder(15), DefaultValue(0.4f), Limit(0, 1, 0.01f), Tooltip("The audio data compression quality. Used only if target format is using compression. Value 0 means the smallest size, value 1 means the best quality.")]
-        public float CompressionQuality { get; set; } = 0.4f;
-
-        /// <summary>
-        /// Disables dynamic audio streaming. The whole clip will be loaded into the memory. Useful for small clips (eg. gunfire sounds).
-        /// </summary>
-        [EditorOrder(20), DefaultValue(false), Tooltip("Disables dynamic audio streaming. The whole clip will be loaded into the memory. Useful for small clips (eg. gunfire sounds).")]
-        public bool DisableStreaming { get; set; } = false;
-
-        /// <summary>
-        /// Checks should the clip be played as spatial (3D) audio or as normal audio. 3D audio is stored in Mono format.
-        /// </summary>
-        [EditorOrder(30), DefaultValue(false), EditorDisplay(null, "Is 3D"), Tooltip("Checks should the clip be played as spatial (3D) audio or as normal audio. 3D audio is stored in Mono format.")]
-        public bool Is3D { get; set; } = false;
-
-        /// <summary>
-        /// The size of a single sample in bits. The clip will be converted to this bit depth on import.
-        /// </summary>
-        [EditorOrder(40), DefaultValue(CustomBitDepth._16), Tooltip("The size of a single sample in bits. The clip will be converted to this bit depth on import.")]
-        public CustomBitDepth BitDepth { get; set; } = CustomBitDepth._16;
-
-        [StructLayout(LayoutKind.Sequential)]
-        internal struct InternalOptions
-        {
-            [MarshalAs(UnmanagedType.I1)]
-            public AudioFormat Format;
-            public byte DisableStreaming;
-            public byte Is3D;
-            public int BitDepth;
-            public float Quality;
-        }
-
-        internal void ToInternal(out InternalOptions options)
-        {
-            options = new InternalOptions
-            {
-                Format = Format,
-                DisableStreaming = (byte)(DisableStreaming ? 1 : 0),
-                Is3D = (byte)(Is3D ? 1 : 0),
-                Quality = CompressionQuality,
-                BitDepth = (int)BitDepth,
-            };
-        }
-
-        internal void FromInternal(ref InternalOptions options)
-        {
-            Format = options.Format;
-            DisableStreaming = options.DisableStreaming != 0;
-            Is3D = options.Is3D != 0;
-            CompressionQuality = options.Quality;
-            BitDepth = ConvertBitDepth(options.BitDepth);
-        }
-
-        /// <summary>
-        /// Tries the restore the asset import options from the target resource file.
-        /// </summary>
-        /// <param name="options">The options.</param>
-        /// <param name="assetPath">The asset path.</param>
-        /// <returns>True settings has been restored, otherwise false.</returns>
-        public static bool TryRestore(ref AudioImportSettings options, string assetPath)
-        {
-            if (AudioImportEntry.Internal_GetAudioImportOptions(assetPath, out var internalOptions))
-            {
-                // Restore settings
-                options.FromInternal(ref internalOptions);
-                return true;
-            }
-
-            return false;
-        }
     }
 
     /// <summary>
@@ -147,7 +55,7 @@ namespace FlaxEditor.Content.Import
     /// <seealso cref="AssetImportEntry" />
     public partial class AudioImportEntry : AssetImportEntry
     {
-        private AudioImportSettings _settings = new AudioImportSettings();
+        private AudioImportSettings _settings = new();
 
         /// <summary>
         /// Initializes a new instance of the <see cref="AudioImportEntry"/> class.
@@ -157,7 +65,7 @@ namespace FlaxEditor.Content.Import
         : base(ref request)
         {
             // Try to restore target asset Audio import options (useful for fast reimport)
-            AudioImportSettings.TryRestore(ref _settings, ResultUrl);
+            Editor.TryRestoreImportOptions(ref _settings.Settings, ResultUrl);
         }
 
         /// <inheritdoc />
@@ -166,27 +74,23 @@ namespace FlaxEditor.Content.Import
         /// <inheritdoc />
         public override bool TryOverrideSettings(object settings)
         {
-            if (settings is AudioImportSettings o)
+            if (settings is AudioImportSettings s)
             {
-                _settings = o;
+                _settings.Settings = s.Settings;
+                return true;
+            }
+            if (settings is AudioTool.Options o)
+            {
+                _settings.Settings = o;
                 return true;
             }
-
             return false;
         }
 
         /// <inheritdoc />
         public override bool Import()
         {
-            return Editor.Import(SourceUrl, ResultUrl, _settings);
+            return Editor.Import(SourceUrl, ResultUrl, _settings.Settings);
         }
-
-        #region Internal Calls
-
-        [LibraryImport("FlaxEngine", EntryPoint = "AudioImportEntryInternal_GetAudioImportOptions", StringMarshalling = StringMarshalling.Custom, StringMarshallingCustomType = typeof(StringMarshaller))]
-        [return: MarshalAs(UnmanagedType.U1)]
-        internal static partial bool Internal_GetAudioImportOptions(string path, out AudioImportSettings.InternalOptions result);
-
-        #endregion
     }
 }

Source/Editor/Content/Import/ImportFilesDialog.cs

@@ -139,7 +139,7 @@ namespace FlaxEditor.Content.Import
             var menu = new ContextMenu();
             menu.AddButton("Rename", OnRenameClicked);
             menu.AddButton("Don't import", OnDontImportClicked);
-            menu.AddButton("Show in Explorer", OnShowInExplorerClicked);
+            menu.AddButton(Utilities.Constants.ShowInExplorer, OnShowInExplorerClicked);
             menu.Tag = node;
             menu.Show(node, location);
         }

Source/Editor/Content/Import/ModelImportEntry.cs

@@ -12,13 +12,14 @@ namespace FlaxEngine.Tools
     {
         partial struct Options
         {
-            private bool ShowGeometry => Type == ModelTool.ModelType.Model || Type == ModelTool.ModelType.SkinnedModel;
+            private bool ShowGeometry => Type == ModelType.Model || Type == ModelType.SkinnedModel || Type == ModelType.Prefab;
-            private bool ShowModel => Type == ModelTool.ModelType.Model;
+            private bool ShowModel => Type == ModelType.Model || Type == ModelType.Prefab;
-            private bool ShowSkinnedModel => Type == ModelTool.ModelType.SkinnedModel;
+            private bool ShowSkinnedModel => Type == ModelType.SkinnedModel || Type == ModelType.Prefab;
-            private bool ShowAnimation => Type == ModelTool.ModelType.Animation;
+            private bool ShowAnimation => Type == ModelType.Animation || Type == ModelType.Prefab;
             private bool ShowSmoothingNormalsAngle => ShowGeometry && CalculateNormals;
             private bool ShowSmoothingTangentsAngle => ShowGeometry && CalculateTangents;
-            private bool ShowFramesRange => ShowAnimation && Duration == ModelTool.AnimationDuration.Custom;
+            private bool ShowFramesRange => ShowAnimation && Duration == AnimationDuration.Custom;
+            private bool ShowSplitting => Type != ModelType.Prefab;
         }
     }
 }

Source/Editor/Content/Items/ContentItem.cs

@@ -323,8 +323,6 @@ namespace FlaxEditor.Content
         /// <param name="value">The new path.</param>
         internal virtual void UpdatePath(string value)
         {
-            Assert.AreNotEqual(Path, value);
-
             // Set path
             Path = StringUtils.NormalizePath(value);
             FileName = System.IO.Path.GetFileName(value);
@@ -441,6 +439,9 @@ namespace FlaxEditor.Content
         {
             get
             {
+                // Skip when hidden
+                if (!Visible)
+                    return Rectangle.Empty;
                 var view = Parent as ContentView;
                 var size = Size;
                 switch (view?.ViewType ?? ContentViewType.Tiles)
@@ -484,6 +485,30 @@ namespace FlaxEditor.Content
                 Render2D.FillRectangle(rectangle, Color.Black);
         }
 
+        /// <summary>
+        /// Draws the item thumbnail.
+        /// </summary>
+        /// <param name="rectangle">The thumbnail rectangle.</param>
+        /// /// <param name="shadow">Whether or not to draw the shadow. Overrides DrawShadow.</param>
+        public void DrawThumbnail(ref Rectangle rectangle, bool shadow)
+        {
+            // Draw shadow
+            if (shadow)
+            {
+                const float thumbnailInShadowSize = 50.0f;
+                var shadowRect = rectangle.MakeExpanded((DefaultThumbnailSize - thumbnailInShadowSize) * rectangle.Width / DefaultThumbnailSize * 1.3f);
+                if (!_shadowIcon.IsValid)
+                    _shadowIcon = Editor.Instance.Icons.AssetShadow128;
+                Render2D.DrawSprite(_shadowIcon, shadowRect);
+            }
+
+            // Draw thumbnail
+            if (_thumbnail.IsValid)
+                Render2D.DrawSprite(_thumbnail, rectangle);
+            else
+                Render2D.FillRectangle(rectangle, Color.Black);
+        }
+
         /// <summary>
         /// Gets the amount of references to that item.
         /// </summary>
@@ -642,7 +667,6 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public override void Draw()
         {
-            // Cache data
             var size = Size;
             var style = Style.Current;
             var view = Parent as ContentView;
@@ -655,9 +679,51 @@ namespace FlaxEditor.Content
             {
             case ContentViewType.Tiles:
             {
-                var thumbnailSize = size.X - 2 * DefaultMarginSize;
+                var thumbnailSize = size.X;
-                thumbnailRect = new Rectangle(DefaultMarginSize, DefaultMarginSize, thumbnailSize, thumbnailSize);
+                thumbnailRect = new Rectangle(0, 0, thumbnailSize, thumbnailSize);
                 nameAlignment = TextAlignment.Center;
+
+                if (this is ContentFolder)
+                {
+                    // Small shadow
+                    var shadowRect = new Rectangle(2, 2, clientRect.Width + 1, clientRect.Height + 1);
+                    var color = Color.Black.AlphaMultiplied(0.2f);
+                    Render2D.FillRectangle(shadowRect, color);
+                    Render2D.FillRectangle(clientRect, style.Background.RGBMultiplied(1.25f));
+
+                    if (isSelected)
+                        Render2D.FillRectangle(clientRect, Parent.ContainsFocus ? style.BackgroundSelected : style.LightBackground);
+                    else if (IsMouseOver)
+                        Render2D.FillRectangle(clientRect, style.BackgroundHighlighted);
+
+                    DrawThumbnail(ref thumbnailRect, false);
+                }
+                else
+                {
+                    // Small shadow
+                    var shadowRect = new Rectangle(2, 2, clientRect.Width + 1, clientRect.Height + 1);
+                    var color = Color.Black.AlphaMultiplied(0.2f);
+                    Render2D.FillRectangle(shadowRect, color);
+
+                    Render2D.FillRectangle(clientRect, style.Background.RGBMultiplied(1.25f));
+                    Render2D.FillRectangle(TextRectangle, style.LightBackground);
+
+                    var accentHeight = 2 * view.ViewScale;
+                    var barRect = new Rectangle(0, thumbnailRect.Height - accentHeight, clientRect.Width, accentHeight);
+                    Render2D.FillRectangle(barRect, Color.DimGray);
+
+                    DrawThumbnail(ref thumbnailRect, false);
+                    if (isSelected)
+                    {
+                        Render2D.FillRectangle(textRect, Parent.ContainsFocus ? style.BackgroundSelected : style.LightBackground);
+                        Render2D.DrawRectangle(clientRect, Parent.ContainsFocus ? style.BackgroundSelected : style.LightBackground);
+                    }
+                    else if (IsMouseOver)
+                    {
+                        Render2D.FillRectangle(textRect, style.BackgroundHighlighted);
+                        Render2D.DrawRectangle(clientRect, style.BackgroundHighlighted);
+                    }
+                }
                 break;
             }
             case ContentViewType.List:
@@ -665,23 +731,21 @@ namespace FlaxEditor.Content
                 var thumbnailSize = size.Y - 2 * DefaultMarginSize;
                 thumbnailRect = new Rectangle(DefaultMarginSize, DefaultMarginSize, thumbnailSize, thumbnailSize);
                 nameAlignment = TextAlignment.Near;
+
+                if (isSelected)
+                    Render2D.FillRectangle(clientRect, Parent.ContainsFocus ? style.BackgroundSelected : style.LightBackground);
+                else if (IsMouseOver)
+                    Render2D.FillRectangle(clientRect, style.BackgroundHighlighted);
+
+                DrawThumbnail(ref thumbnailRect);
                 break;
             }
             default: throw new ArgumentOutOfRangeException();
             }
 
-            // Draw background
-            if (isSelected)
-                Render2D.FillRectangle(clientRect, Parent.ContainsFocus ? style.BackgroundSelected : style.LightBackground);
-            else if (IsMouseOver)
-                Render2D.FillRectangle(clientRect, style.BackgroundHighlighted);
-
-            // Draw preview
-            DrawThumbnail(ref thumbnailRect);
-
             // Draw short name
             Render2D.PushClip(ref textRect);
-            Render2D.DrawText(style.FontMedium, ShowFileExtension || view.ShowFileExtensions ? FileName : ShortName, textRect, style.Foreground, nameAlignment, TextAlignment.Center, TextWrapping.WrapWords, 0.75f, 0.95f);
+            Render2D.DrawText(style.FontMedium, ShowFileExtension || view.ShowFileExtensions ? FileName : ShortName, textRect, style.Foreground, nameAlignment, TextAlignment.Center, TextWrapping.WrapWords, 1f, 0.95f);
             Render2D.PopClip();
         }
 

Source/Editor/Content/Items/ScriptItem.cs

@@ -30,7 +30,7 @@ namespace FlaxEditor.Content
             ShowFileExtension = true;
         }
 
-        private static string FilterScriptName(string input)
+        internal static string FilterScriptName(string input)
         {
             var length = input.Length;
             var sb = new StringBuilder(length);

Source/Editor/Content/PreviewsCache.cpp

@@ -5,6 +5,7 @@
 #include "Engine/Graphics/GPUContext.h"
 #include "Engine/Threading/Threading.h"
 #include "Engine/Graphics/RenderTools.h"
+#include "Engine/Content/Content.h"
 #include "Engine/Content/Factories/BinaryAssetFactory.h"
 #include "Engine/ContentImporters/AssetsImportingManager.h"
 #include "Engine/Content/Upgraders/TextureAssetUpgrader.h"
@@ -92,15 +93,12 @@ SpriteHandle PreviewsCache::FindSlot(const Guid& id)
 {
     if (WaitForLoaded())
         return SpriteHandle::Invalid;
-
-    // Find entry
     int32 index;
     if (_assets.Find(id, index))
     {
         const String spriteName = StringUtils::ToString(index);
         return FindSprite(spriteName);
     }
-
     return SpriteHandle::Invalid;
 }
 
@@ -114,6 +112,17 @@ Asset::LoadResult PreviewsCache::load()
         return LoadResult::Failed;
     _assets.Set(previewsMetaChunk->Get<Guid>(), ASSETS_ICONS_PER_ATLAS);
 
+    // Verify if cached assets still exist (don't store thumbnails for removed files)
+    AssetInfo assetInfo;
+    for (Guid& id : _assets)
+    {
+        if (id.IsValid() && Content::GetAsset(id) == nullptr && !Content::GetAssetInfo(id, assetInfo))
+        {
+            // Free slot (no matter the texture contents)
+            id = Guid::Empty;
+        }
+    }
+
     // Setup atlas sprites array
     Sprite sprite;
     sprite.Area.Size = static_cast<float>(ASSET_ICON_SIZE) / ASSETS_ICONS_ATLAS_SIZE;
@@ -162,7 +171,7 @@ SpriteHandle PreviewsCache::OccupySlot(GPUTexture* source, const Guid& id)
     if (WaitForLoaded())
         return SpriteHandle::Invalid;
 
-    // Find free slot and for that asset
+    // Find this asset slot or use the first empty
     int32 index = _assets.Find(id);
     if (index == INVALID_INDEX)
         index = _assets.Find(Guid::Empty);
@@ -201,14 +210,12 @@ bool PreviewsCache::ReleaseSlot(const Guid& id)
 {
     bool result = false;
     ScopeLock lock(Locker);
-
     int32 index = _assets.Find(id);
     if (index != INVALID_INDEX)
     {
         _assets[index] = Guid::Empty;
         result = true;
     }
-
     return result;
 }
 

Source/Editor/Content/Proxy/BehaviorTreeProxy.cs

@@ -0,0 +1,66 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+using System;
+using System.IO;
+using FlaxEditor.Content.Thumbnails;
+using FlaxEditor.Windows;
+using FlaxEditor.Windows.Assets;
+using FlaxEngine;
+using FlaxEngine.GUI;
+
+namespace FlaxEditor.Content
+{
+    /// <summary>
+    /// A <see cref="BehaviorTree"/> asset proxy object.
+    /// </summary>
+    /// <seealso cref="FlaxEditor.Content.BinaryAssetProxy" />
+    [ContentContextMenu("New/AI/Behavior Tree")]
+    public class BehaviorTreeProxy : BinaryAssetProxy
+    {
+        /// <inheritdoc />
+        public override string Name => "Behavior Tree";
+
+        /// <inheritdoc />
+        public override bool CanReimport(ContentItem item)
+        {
+            return true;
+        }
+
+        /// <inheritdoc />
+        public override EditorWindow Open(Editor editor, ContentItem item)
+        {
+            return new BehaviorTreeWindow(editor, item as BinaryAssetItem);
+        }
+
+        /// <inheritdoc />
+        public override Color AccentColor => Color.FromRGB(0x3256A8);
+
+        /// <inheritdoc />
+        public override Type AssetType => typeof(BehaviorTree);
+
+        /// <inheritdoc />
+        public override bool CanCreate(ContentFolder targetLocation)
+        {
+            return targetLocation.CanHaveAssets;
+        }
+
+        /// <inheritdoc />
+        public override void Create(string outputPath, object arg)
+        {
+            if (Editor.CreateAsset(Editor.NewAssetType.BehaviorTree, outputPath))
+                throw new Exception("Failed to create new asset.");
+        }
+
+        /// <inheritdoc />
+        public override void OnThumbnailDrawBegin(ThumbnailRequest request, ContainerControl guiRoot, GPUContext context)
+        {
+            guiRoot.AddChild(new Label
+            {
+                Text = Path.GetFileNameWithoutExtension(request.Asset.Path),
+                Offsets = Margin.Zero,
+                AnchorPreset = AnchorPresets.StretchAll,
+                Wrapping = TextWrapping.WrapWords
+            });
+        }
+    }
+}

Source/Editor/Content/Proxy/CubeTextureProxy.cs

@@ -54,12 +54,7 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public override bool CanDrawThumbnail(ThumbnailRequest request)
         {
-            if (!_preview.HasLoadedAssets)
+            return _preview.HasLoadedAssets && ThumbnailsModule.HasMinimumQuality((CubeTexture)request.Asset);
-                return false;
-
-            // Check if all mip maps are streamed
-            var asset = (CubeTexture)request.Asset;
-            return asset.ResidentMipLevels >= Mathf.Max(1, (int)(asset.MipLevels * ThumbnailsModule.MinimumRequiredResourcesQuality));
         }
 
         /// <inheritdoc />

Source/Editor/Content/Proxy/MaterialInstanceProxy.cs

@@ -62,7 +62,7 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public override bool CanDrawThumbnail(ThumbnailRequest request)
         {
-            return _preview.HasLoadedAssets;
+            return _preview.HasLoadedAssets && ThumbnailsModule.HasMinimumQuality((MaterialInstance)request.Asset);
         }
 
         /// <inheritdoc />

Source/Editor/Content/Proxy/MaterialProxy.cs

@@ -106,7 +106,7 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public override bool CanDrawThumbnail(ThumbnailRequest request)
         {
-            return _preview.HasLoadedAssets;
+            return _preview.HasLoadedAssets && ThumbnailsModule.HasMinimumQuality((Material)request.Asset);
         }
 
         /// <inheritdoc />

Source/Editor/Content/Proxy/ModelProxy.cs

@@ -72,7 +72,10 @@ namespace FlaxEditor.Content
         {
             if (_preview == null)
             {
-                _preview = new ModelPreview(false);
+                _preview = new ModelPreview(false)
+                {
+                    ScaleToFit = false,
+                };
                 InitAssetPreview(_preview);
             }
 
@@ -82,12 +85,7 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public override bool CanDrawThumbnail(ThumbnailRequest request)
         {
-            if (!_preview.HasLoadedAssets)
+            return _preview.HasLoadedAssets && ThumbnailsModule.HasMinimumQuality((Model)request.Asset);
-                return false;
-
-            // Check if asset is streamed enough
-            var asset = (Model)request.Asset;
-            return asset.LoadedLODs >= Mathf.Max(1, (int)(asset.LODs.Length * ThumbnailsModule.MinimumRequiredResourcesQuality));
         }
 
         /// <inheritdoc />
@@ -96,6 +94,7 @@ namespace FlaxEditor.Content
             _preview.Model = (Model)request.Asset;
             _preview.Parent = guiRoot;
             _preview.SyncBackbufferSize();
+            _preview.ViewportCamera.SetArcBallView(_preview.Model.GetBox());
 
             _preview.Task.OnDraw();
         }

Source/Editor/Content/Proxy/SceneProxy.cs

@@ -1,6 +1,7 @@
 // Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
 using System;
+using FlaxEditor.GUI.ContextMenu;
 using FlaxEditor.Windows;
 using FlaxEngine;
 
@@ -30,6 +31,12 @@ namespace FlaxEditor.Content
             return item is SceneItem;
         }
 
+        /// <inheritdoc />
+        public override bool AcceptsAsset(string typeName, string path)
+        {
+            return (typeName == Scene.AssetTypename || typeName == Scene.EditorPickerTypename) && path.EndsWith(FileExtension, StringComparison.OrdinalIgnoreCase);
+        }
+
         /// <inheritdoc />
         public override bool CanCreate(ContentFolder targetLocation)
         {
@@ -62,5 +69,15 @@ namespace FlaxEditor.Content
         {
             return new SceneItem(path, id);
         }
+
+        /// <inheritdoc />
+        public override void OnContentWindowContextMenu(ContextMenu menu, ContentItem item)
+        {
+            var id = ((SceneItem)item).ID;
+            if (Level.FindScene(id) == null)
+            {
+                menu.AddButton("Open (additive)", () => { Editor.Instance.Scene.OpenScene(id, true); });
+            }
+        }
     }
 }

Source/Editor/Content/Proxy/ShaderProxy.cs

@@ -29,7 +29,7 @@ namespace FlaxEditor.Content
             if (asset)
             {
                 var source = Editor.GetShaderSourceCode(asset);
-                Utilities.Utils.ShowSourceCodeWindow(source, "Shader Source", item.RootWindow.Window);
+                Utilities.Utils.ShowSourceCodeWindow(source, "Shader Source", item.RootWindow?.Window);
             }
             return null;
         }

Source/Editor/Content/Proxy/SkinnedModelProxy.cs

@@ -54,15 +54,7 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public override bool CanDrawThumbnail(ThumbnailRequest request)
         {
-            if (!_preview.HasLoadedAssets)
+            return _preview.HasLoadedAssets && ThumbnailsModule.HasMinimumQuality((SkinnedModel)request.Asset);
-                return false;
-
-            // Check if asset is streamed enough
-            var asset = (SkinnedModel)request.Asset;
-            var lods = asset.LODs.Length;
-            if (asset.IsLoaded && lods == 0)
-                return true; // Skeleton-only model
-            return asset.LoadedLODs >= Mathf.Max(1, (int)(lods * ThumbnailsModule.MinimumRequiredResourcesQuality));
         }
 
         /// <inheritdoc />

Source/Editor/Content/Proxy/TextureProxy.cs

@@ -57,11 +57,7 @@ namespace FlaxEditor.Content
         /// <inheritdoc />
         public override bool CanDrawThumbnail(ThumbnailRequest request)
         {
-            // Check if asset is streamed enough
+            return ThumbnailsModule.HasMinimumQuality((Texture)request.Asset);
-            var asset = (Texture)request.Asset;
-            var mipLevels = asset.MipLevels;
-            var minMipLevels = Mathf.Min(mipLevels, 7);
-            return asset.ResidentMipLevels >= Mathf.Max(minMipLevels, (int)(mipLevels * ThumbnailsModule.MinimumRequiredResourcesQuality));
         }
 
         /// <inheritdoc />

Source/Editor/Content/Thumbnails/ThumbnailRequest.cs

@@ -35,6 +35,11 @@ namespace FlaxEditor.Content.Thumbnails
             /// The finalized state.
             /// </summary>
             Disposed,
+
+            /// <summary>
+            /// The request has failed (eg. asset cannot be loaded).
+            /// </summary>
+            Failed,
         };
 
         /// <summary>
@@ -78,6 +83,14 @@ namespace FlaxEditor.Content.Thumbnails
             Proxy = proxy;
         }
 
+        internal void Update()
+        {
+            if (State == States.Prepared && (!Asset || Asset.LastLoadFailed))
+            {
+                State = States.Failed;
+            }
+        }
+
         /// <summary>
         /// Prepares this request.
         /// </summary>
@@ -85,11 +98,8 @@ namespace FlaxEditor.Content.Thumbnails
         {
             if (State != States.Created)
                 throw new InvalidOperationException();
-
-            // Prepare
             Asset = FlaxEngine.Content.LoadAsync(Item.Path);
             Proxy.OnThumbnailDrawPrepare(this);
-
             State = States.Prepared;
         }
 
@@ -101,9 +111,7 @@ namespace FlaxEditor.Content.Thumbnails
         {
             if (State != States.Prepared)
                 throw new InvalidOperationException();
-
             Item.Thumbnail = icon;
-
             State = States.Rendered;
         }
 

Source/Editor/Content/Thumbnails/ThumbnailsModule.cs

@@ -21,15 +21,11 @@ namespace FlaxEditor.Content.Thumbnails
         /// </summary>
         public const float MinimumRequiredResourcesQuality = 0.8f;
 
-        // TODO: free atlas slots for deleted assets
-
         private readonly List<PreviewsCache> _cache = new List<PreviewsCache>(4);
         private readonly string _cacheFolder;
-
-        private DateTime _lastFlushTime;
-
         private readonly List<ThumbnailRequest> _requests = new List<ThumbnailRequest>(128);
         private readonly PreviewRoot _guiRoot = new PreviewRoot();
+        private DateTime _lastFlushTime;
         private RenderTask _task;
         private GPUTexture _output;
 
@@ -88,7 +84,6 @@ namespace FlaxEditor.Content.Thumbnails
                         }
                     }
 
-                    // Add request
                     AddRequest(assetItem, proxy);
                 }
             }
@@ -118,25 +113,87 @@ namespace FlaxEditor.Content.Thumbnails
                 for (int i = 0; i < _cache.Count; i++)
                 {
                     if (_cache[i].ReleaseSlot(assetItem.ID))
-                    {
                         break;
-                    }
                 }
             }
         }
 
+        internal static bool HasMinimumQuality(TextureBase asset)
+        {
+            if (asset.HasStreamingError)
+                return true; // Don't block thumbnails queue when texture fails to stream in (eg. unsupported format)
+            var mipLevels = asset.MipLevels;
+            var minMipLevels = Mathf.Min(mipLevels, 7);
+            return asset.IsLoaded && asset.ResidentMipLevels >= Mathf.Max(minMipLevels, (int)(mipLevels * MinimumRequiredResourcesQuality));
+        }
+
+        internal static bool HasMinimumQuality(Model asset)
+        {
+            if (!asset.IsLoaded)
+                return false;
+            var lods = asset.LODs.Length;
+            var slots = asset.MaterialSlots;
+            foreach (var slot in slots)
+            {
+                if (slot.Material && !HasMinimumQuality(slot.Material))
+                    return false;
+            }
+            return asset.LoadedLODs >= Mathf.Max(1, (int)(lods * MinimumRequiredResourcesQuality));
+        }
+
+        internal static bool HasMinimumQuality(SkinnedModel asset)
+        {
+            var lods = asset.LODs.Length;
+            if (asset.IsLoaded && lods == 0)
+                return true; // Skeleton-only model
+            var slots = asset.MaterialSlots;
+            foreach (var slot in slots)
+            {
+                if (slot.Material && !HasMinimumQuality(slot.Material))
+                    return false;
+            }
+            return asset.LoadedLODs >= Mathf.Max(1, (int)(lods * MinimumRequiredResourcesQuality));
+        }
+
+        internal static bool HasMinimumQuality(MaterialBase asset)
+        {
+            if (asset is MaterialInstance asInstance)
+                return HasMinimumQuality(asInstance);
+            return HasMinimumQualityInternal(asset);
+        }
+
+        internal static bool HasMinimumQuality(Material asset)
+        {
+            return HasMinimumQualityInternal(asset);
+        }
+
+        internal static bool HasMinimumQuality(MaterialInstance asset)
+        {
+            if (!HasMinimumQualityInternal(asset))
+                return false;
+            var baseMaterial = asset.BaseMaterial;
+            return baseMaterial == null || HasMinimumQualityInternal(baseMaterial);
+        }
+
+        private static bool HasMinimumQualityInternal(MaterialBase asset)
+        {
+            if (!asset.IsLoaded)
+                return false;
+            var parameters = asset.Parameters;
+            foreach (var parameter in parameters)
+            {
+                if (parameter.Value is TextureBase asTexture && !HasMinimumQuality(asTexture))
+                    return false;
+            }
+            return true;
+        }
+
         #region IContentItemOwner
 
         /// <inheritdoc />
         void IContentItemOwner.OnItemDeleted(ContentItem item)
         {
-            if (item is AssetItem assetItem)
+            DeletePreview(item);
-            {
-                lock (_requests)
-                {
-                    RemoveRequest(assetItem);
-                }
-            }
         }
 
         /// <inheritdoc />
@@ -338,18 +395,16 @@ namespace FlaxEditor.Content.Thumbnails
             for (int i = 0; i < maxChecks; i++)
             {
                 var request = _requests[i];
-
                 try
                 {
                     if (request.IsReady)
-                    {
                         return request;
-                    }
                 }
                 catch (Exception ex)
                 {
-                    Editor.LogWarning(ex);
                     Editor.LogWarning($"Failed to prepare thumbnail rendering for {request.Item.ShortName}.");
+                    Editor.LogWarning(ex);
+                    _requests.RemoveAt(i--);
                 }
             }
 
@@ -368,7 +423,6 @@ namespace FlaxEditor.Content.Thumbnails
             // Create atlas
             if (PreviewsCache.Create(path))
             {
-                // Error
                 Editor.LogError("Failed to create thumbnails atlas.");
                 return null;
             }
@@ -377,7 +431,6 @@ namespace FlaxEditor.Content.Thumbnails
             var atlas = FlaxEngine.Content.LoadAsync<PreviewsCache>(path);
             if (atlas == null)
             {
-                // Error
                 Editor.LogError("Failed to load thumbnails atlas.");
                 return null;
             }
@@ -430,10 +483,7 @@ namespace FlaxEditor.Content.Thumbnails
         {
             // Wait some frames before start generating previews (late init feature)
             if (Time.TimeSinceStartup < 1.0f || HasAllAtlasesLoaded() == false)
-            {
-                // Back
                 return;
-            }
 
             lock (_requests)
             {
@@ -449,9 +499,9 @@ namespace FlaxEditor.Content.Thumbnails
                     for (int i = 0; i < checks; i++)
                     {
                         var request = _requests[i];
-
                         try
                         {
+                            request.Update();
                             if (request.IsReady)
                             {
                                 isAnyReady = true;
@@ -460,11 +510,16 @@ namespace FlaxEditor.Content.Thumbnails
                             {
                                 request.Prepare();
                             }
+                            else if (request.State == ThumbnailRequest.States.Failed)
+                            {
+                                _requests.RemoveAt(i--);
+                            }
                         }
                         catch (Exception ex)
                         {
-                            Editor.LogWarning(ex);
                             Editor.LogWarning($"Failed to prepare thumbnail rendering for {request.Item.ShortName}.");
+                            Editor.LogWarning(ex);
+                            _requests.RemoveAt(i--);
                         }
                     }
 

Source/Editor/Content/Tree/ContentTreeNode.cs

@@ -24,6 +24,16 @@ namespace FlaxEditor.Content
         /// </summary>
         protected ContentFolder _folder;
 
+        /// <summary>
+        /// Whether this node can be deleted.
+        /// </summary>
+        public virtual bool CanDelete => true;
+        
+        /// <summary>
+        /// Whether this node can be duplicated.
+        /// </summary>
+        public virtual bool CanDuplicate => true;
+
         /// <summary>
         /// Gets the content folder item.
         /// </summary>
@@ -86,6 +96,7 @@ namespace FlaxEditor.Content
                 Folder.ParentFolder = parent.Folder;
                 Parent = parent;
             }
+            IconColor = Style.Current.Foreground;
         }
 
         /// <summary>
@@ -300,7 +311,7 @@ namespace FlaxEditor.Content
                     StartRenaming();
                     return true;
                 case KeyboardKeys.Delete:
-                    if (Folder.Exists)
+                    if (Folder.Exists && CanDelete)
                         Editor.Instance.Windows.ContentWin.Delete(Folder);
                     return true;
                 }
@@ -309,7 +320,7 @@ namespace FlaxEditor.Content
                     switch (key)
                     {
                     case KeyboardKeys.D:
-                        if (Folder.Exists)
+                        if (Folder.Exists && CanDuplicate)
                             Editor.Instance.Windows.ContentWin.Duplicate(Folder);
                         return true;
                     }

Source/Editor/Content/Tree/MainContentTreeNode.cs

@@ -12,6 +12,12 @@ namespace FlaxEditor.Content
     {
         private FileSystemWatcher _watcher;
 
+        /// <inheritdoc />
+        public override bool CanDelete => false;
+
+        /// <inheritdoc />
+        public override bool CanDuplicate => false;
+
         /// <summary>
         /// Initializes a new instance of the <see cref="MainContentTreeNode"/> class.
         /// </summary>
@@ -29,7 +35,7 @@ namespace FlaxEditor.Content
             //_watcher.Changed += OnEvent;
             _watcher.Created += OnEvent;
             _watcher.Deleted += OnEvent;
-            //_watcher.Renamed += OnEvent;
+            _watcher.Renamed += OnEvent;
         }
 
         private void OnEvent(object sender, FileSystemEventArgs e)

Source/Editor/Content/Tree/RootContentTreeNode.cs

@@ -17,6 +17,6 @@ namespace FlaxEditor.Content
         }
 
         /// <inheritdoc />
-        public override string NavButtonLabel => string.Empty;
+        public override string NavButtonLabel => " /";
     }
 }

Source/Editor/Cooker/CookingData.h

@@ -12,6 +12,13 @@
 class GameCooker;
 class PlatformTools;
 
+#if OFFICIAL_BUILD
+// Use the fixed .NET SDK version in packaged builds for compatibility (FlaxGame is precompiled with it)
+#define GAME_BUILD_DOTNET_VER TEXT("-dotnet=7")
+#else
+#define GAME_BUILD_DOTNET_VER TEXT("")
+#endif
+
 /// <summary>
 /// Game building options. Used as flags.
 /// </summary>

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

@@ -169,6 +169,30 @@ bool AndroidPlatformTools::OnPostProcess(CookingData& data)
         permissions += String::Format(TEXT("\n    <uses-permission android:name=\"{0}\" />"), e.Item);
     }
 
+    // Setup default Android screen orientation
+    auto defaultOrienation = platformSettings->DefaultOrientation;
+    String orientation = String("fullSensor");
+    switch (defaultOrienation)
+    {
+    case AndroidPlatformSettings::ScreenOrientation::Portrait:
+        orientation = String("portrait");
+        break;
+    case AndroidPlatformSettings::ScreenOrientation::PortraitReverse:
+        orientation = String("reversePortrait");
+        break;
+    case AndroidPlatformSettings::ScreenOrientation::LandscapeRight:
+        orientation = String("landscape");
+        break;
+    case AndroidPlatformSettings::ScreenOrientation::LandscapeLeft:
+        orientation = String("reverseLandscape");
+        break;
+    case AndroidPlatformSettings::ScreenOrientation::AutoRotation:
+        orientation = String("fullSensor");
+        break;
+    default:
+        break;
+    }
+
     // Setup Android application attributes
     String attributes;
     if (data.Configuration != BuildConfiguration::Release)
@@ -223,6 +247,7 @@ bool AndroidPlatformTools::OnPostProcess(CookingData& data)
     EditorUtilities::ReplaceInFile(manifestPath, TEXT("${PackageName}"), packageName);
     EditorUtilities::ReplaceInFile(manifestPath, TEXT("${ProjectVersion}"), projectVersion);
     EditorUtilities::ReplaceInFile(manifestPath, TEXT("${AndroidPermissions}"), permissions);
+    EditorUtilities::ReplaceInFile(manifestPath, TEXT("${DefaultOrientation}"), orientation);
     EditorUtilities::ReplaceInFile(manifestPath, TEXT("${AndroidAttributes}"), attributes);
     const String stringsPath = data.OriginalOutputPath / TEXT("app/src/main/res/values/strings.xml");
     EditorUtilities::ReplaceInFile(stringsPath, TEXT("${ProjectName}"), gameSettings->ProductName);
@@ -280,17 +305,25 @@ bool AndroidPlatformTools::OnPostProcess(CookingData& data)
     const Char* gradlew = TEXT("gradlew");
 #endif
 #if PLATFORM_LINUX
-    Platform::RunProcess(String::Format(TEXT("chmod +x \"{0}/gradlew\""), data.OriginalOutputPath), data.OriginalOutputPath, Dictionary<String, String>(), true);
+    {
+        CreateProcessSettings procSettings;
+        procSettings.FileName = String::Format(TEXT("chmod +x \"{0}/gradlew\""), data.OriginalOutputPath);
+        procSettings.WorkingDirectory = data.OriginalOutputPath;
+        procSettings.HiddenWindow = true;
+        Platform::CreateProcess(procSettings);
+    }
 #endif
     const bool distributionPackage = buildSettings->ForDistribution;
-    CreateProcessSettings procSettings;
-    procSettings.FileName = String::Format(TEXT("\"{0}\" {1}"), data.OriginalOutputPath / gradlew, distributionPackage ? TEXT("assemble") : TEXT("assembleDebug"));
-    procSettings.WorkingDirectory = data.OriginalOutputPath;
-    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));
+        CreateProcessSettings procSettings;
-        return true;
+        procSettings.FileName = String::Format(TEXT("\"{0}\" {1}"), data.OriginalOutputPath / gradlew, distributionPackage ? TEXT("assemble") : TEXT("assembleDebug"));
+        procSettings.WorkingDirectory = data.OriginalOutputPath;
+        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));
+            return true;
+        }
     }
 
     // Copy result package

Source/Editor/Cooker/Platform/Linux/LinuxPlatformTools.cpp

@@ -104,4 +104,19 @@ bool LinuxPlatformTools::OnDeployBinaries(CookingData& data)
     return false;
 }
 
+void LinuxPlatformTools::OnRun(CookingData& data, String& executableFile, String& commandLineFormat, String& workingDir)
+{
+    // Pick the first executable file
+    Array<String> files;
+    FileSystem::DirectoryGetFiles(files, data.NativeCodeOutputPath, TEXT("*"), DirectorySearchOption::TopDirectoryOnly);
+    for (auto& file : files)
+    {
+        if (FileSystem::GetExtension(file).IsEmpty())
+        {
+            executableFile = file;
+            break;
+        }
+    }
+}
+
 #endif

Source/Editor/Cooker/Platform/Linux/LinuxPlatformTools.h

@@ -20,6 +20,7 @@ public:
     ArchitectureType GetArchitecture() const override;
     bool UseSystemDotnet() const override;
     bool OnDeployBinaries(CookingData& data) override;
+    void OnRun(CookingData& data, String& executableFile, String& commandLineFormat, String& workingDir) override;
 };
 
 #endif

Source/Editor/Cooker/Platform/Mac/MacPlatformTools.cpp

@@ -5,6 +5,7 @@
 #include "MacPlatformTools.h"
 #include "Engine/Platform/File.h"
 #include "Engine/Platform/FileSystem.h"
+#include "Engine/Platform/CreateProcessSettings.h"
 #include "Engine/Platform/Mac/MacPlatformSettings.h"
 #include "Engine/Core/Config/GameSettings.h"
 #include "Engine/Core/Config/BuildSettings.h"
@@ -16,7 +17,7 @@
 #include "Editor/ProjectInfo.h"
 #include "Editor/Cooker/GameCooker.h"
 #include "Editor/Utilities/EditorUtilities.h"
-#include <ThirdParty/pugixml/pugixml.hpp>
+#include <ThirdParty/pugixml/pugixml_extra.hpp>
 using namespace pugi;
 
 IMPLEMENT_SETTINGS_GETTER(MacPlatformSettings, MacPlatform);
@@ -124,17 +125,35 @@ bool MacPlatformTools::OnPostProcess(CookingData& data)
             LOG(Error, "Failed to export application icon.");
             return true;
         }
-        bool failed = Platform::RunProcess(TEXT("sips -z 16 16 icon_1024x1024.png --out icon_16x16.png"), tmpFolderPath);
+        CreateProcessSettings procSettings;
-        failed |= Platform::RunProcess(TEXT("sips -z 32 32 icon_1024x1024.png --out icon_16x16@2x.png"), tmpFolderPath);
+        procSettings.HiddenWindow = true;
-        failed |= Platform::RunProcess(TEXT("sips -z 32 32 icon_1024x1024.png --out icon_32x32.png"), tmpFolderPath);
+        procSettings.FileName = TEXT("/usr/bin/sips");
-        failed |= Platform::RunProcess(TEXT("sips -z 64 64 icon_1024x1024.png --out icon_32x32@2x.png"), tmpFolderPath);
+        procSettings.WorkingDirectory = tmpFolderPath;
-        failed |= Platform::RunProcess(TEXT("sips -z 128 128 icon_1024x1024.png --out icon_128x128.png"), tmpFolderPath);
+        procSettings.Arguments = TEXT("-z 16 16 icon_1024x1024.png --out icon_16x16.png");
-        failed |= Platform::RunProcess(TEXT("sips -z 256 256 icon_1024x1024.png --out icon_128x128@2x.png"), tmpFolderPath);
+        bool failed = false;
-        failed |= Platform::RunProcess(TEXT("sips -z 256 256 icon_1024x1024.png --out icon_256x256.png"), tmpFolderPath);
+        failed |= Platform::CreateProcess(procSettings);
-        failed |= Platform::RunProcess(TEXT("sips -z 512 512 icon_1024x1024.png --out icon_256x256@2x.png"), tmpFolderPath);
+        procSettings.Arguments = TEXT("-z 32 32 icon_1024x1024.png --out icon_16x16@2x.png");
-        failed |= Platform::RunProcess(TEXT("sips -z 512 512 icon_1024x1024.png --out icon_512x512.png"), tmpFolderPath);
+        failed |= Platform::CreateProcess(procSettings);
-        failed |= Platform::RunProcess(TEXT("sips -z 1024 1024 icon_1024x1024.png --out icon_512x512@2x.png"), tmpFolderPath);
+        procSettings.Arguments = TEXT("-z 32 32 icon_1024x1024.png --out icon_32x32.png");
-        failed |= Platform::RunProcess(TEXT("iconutil -c icns icon.iconset"), iconFolderPath);
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.Arguments = TEXT("-z 64 64 icon_1024x1024.png --out icon_32x32@2x.png");
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.Arguments = TEXT("-z 128 128 icon_1024x1024.png --out icon_128x128.png");
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.Arguments = TEXT("-z 256 256 icon_1024x1024.png --out icon_128x128@2x.png");
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.Arguments = TEXT("-z 256 256 icon_1024x1024.png --out icon_256x256.png");
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.Arguments = TEXT("-z 512 512 icon_1024x1024.png --out icon_256x256@2x.png");
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.Arguments = TEXT("-z 512 512 icon_1024x1024.png --out icon_512x512.png");
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.Arguments = TEXT("-z 1024 1024 icon_1024x1024.png --out icon_512x512@2x.png");
+        failed |= Platform::CreateProcess(procSettings);
+        procSettings.FileName = TEXT("/usr/bin/iconutil");
+        procSettings.Arguments = TEXT("-c icns icon.iconset");
+        procSettings.WorkingDirectory = iconFolderPath;
+        failed |= Platform::CreateProcess(procSettings);
         if (failed)
         {
             LOG(Error, "Failed to export application icon.");
@@ -151,17 +170,17 @@ bool MacPlatformTools::OnPostProcess(CookingData& data)
     const String plistPath = data.DataOutputPath / TEXT("Info.plist");
     {
         xml_document doc;
-        xml_node plist = doc.child_or_append(PUGIXML_TEXT("plist"));
+        xml_node_extra plist = xml_node_extra(doc).child_or_append(PUGIXML_TEXT("plist"));
         plist.append_attribute(PUGIXML_TEXT("version")).set_value(PUGIXML_TEXT("1.0"));
-        xml_node dict = plist.child_or_append(PUGIXML_TEXT("dict"));
+        xml_node_extra dict = plist.child_or_append(PUGIXML_TEXT("dict"));
 
 #define ADD_ENTRY(key, value) \
-    dict.append_child(PUGIXML_TEXT("key")).set_child_value(PUGIXML_TEXT(key)); \
+    dict.append_child_with_value(PUGIXML_TEXT("key"), PUGIXML_TEXT(key)); \
-    dict.append_child(PUGIXML_TEXT("string")).set_child_value(PUGIXML_TEXT(value))
+    dict.append_child_with_value(PUGIXML_TEXT("string"), PUGIXML_TEXT(value))
 #define ADD_ENTRY_STR(key, value) \
-    dict.append_child(PUGIXML_TEXT("key")).set_child_value(PUGIXML_TEXT(key)); \
+    dict.append_child_with_value(PUGIXML_TEXT("key"), PUGIXML_TEXT(key)); \
     { std::u16string valueStr(value.GetText()); \
-    dict.append_child(PUGIXML_TEXT("string")).set_child_value(pugi::string_t(valueStr.begin(), valueStr.end()).c_str()); }
+    dict.append_child_with_value(PUGIXML_TEXT("string"), pugi::string_t(valueStr.begin(), valueStr.end()).c_str()); }
 
         ADD_ENTRY("CFBundleDevelopmentRegion", "English");
         ADD_ENTRY("CFBundlePackageType", "APPL");
@@ -175,22 +194,22 @@ bool MacPlatformTools::OnPostProcess(CookingData& data)
         ADD_ENTRY_STR("CFBundleVersion", projectVersion);
         ADD_ENTRY_STR("NSHumanReadableCopyright", gameSettings->CopyrightNotice);
 
-        dict.append_child(PUGIXML_TEXT("key")).set_child_value(PUGIXML_TEXT("CFBundleSupportedPlatforms"));
+        dict.append_child_with_value(PUGIXML_TEXT("key"), PUGIXML_TEXT("CFBundleSupportedPlatforms"));
-        xml_node CFBundleSupportedPlatforms = dict.append_child(PUGIXML_TEXT("array"));
+        xml_node_extra CFBundleSupportedPlatforms = dict.append_child(PUGIXML_TEXT("array"));
-        CFBundleSupportedPlatforms.append_child(PUGIXML_TEXT("string")).set_child_value(PUGIXML_TEXT("MacOSX"));
+        CFBundleSupportedPlatforms.append_child_with_value(PUGIXML_TEXT("string"), PUGIXML_TEXT("MacOSX"));
 
-        dict.append_child(PUGIXML_TEXT("key")).set_child_value(PUGIXML_TEXT("LSMinimumSystemVersionByArchitecture"));
+        dict.append_child_with_value(PUGIXML_TEXT("key"), PUGIXML_TEXT("LSMinimumSystemVersionByArchitecture"));
-        xml_node LSMinimumSystemVersionByArchitecture = dict.append_child(PUGIXML_TEXT("dict"));
+        xml_node_extra LSMinimumSystemVersionByArchitecture = dict.append_child(PUGIXML_TEXT("dict"));
         switch (_arch)
         {
         case ArchitectureType::x64:
-            LSMinimumSystemVersionByArchitecture.append_child(PUGIXML_TEXT("key")).set_child_value(PUGIXML_TEXT("x86_64"));
+            LSMinimumSystemVersionByArchitecture.append_child_with_value(PUGIXML_TEXT("key"), PUGIXML_TEXT("x86_64"));
             break;
         case ArchitectureType::ARM64:
-            LSMinimumSystemVersionByArchitecture.append_child(PUGIXML_TEXT("key")).set_child_value(PUGIXML_TEXT("arm64"));
+            LSMinimumSystemVersionByArchitecture.append_child_with_value(PUGIXML_TEXT("key"), PUGIXML_TEXT("arm64"));
             break;
         }
-        LSMinimumSystemVersionByArchitecture.append_child(PUGIXML_TEXT("string")).set_child_value(PUGIXML_TEXT("10.15"));
+        LSMinimumSystemVersionByArchitecture.append_child_with_value(PUGIXML_TEXT("string"), PUGIXML_TEXT("10.15"));
         
 #undef ADD_ENTRY
 #undef ADD_ENTRY_STR
@@ -210,18 +229,39 @@ bool MacPlatformTools::OnPostProcess(CookingData& data)
         return false;
     GameCooker::PackageFiles();
     LOG(Info, "Building app package...");
-    const String dmgPath = data.OriginalOutputPath / appName + TEXT(".dmg");
-    const String dmgCommand = String::Format(TEXT("hdiutil create {0}.dmg -volname {0} -fs HFS+ -srcfolder {0}.app"), appName);
-    const int32 result = Platform::RunProcess(dmgCommand, data.OriginalOutputPath);
-    if (result != 0)
     {
-        data.Error(String::Format(TEXT("Failed to package app (result code: {0}). See log for more info."), result));
+        const String dmgPath = data.OriginalOutputPath / appName + TEXT(".dmg");
-        return true;
+        CreateProcessSettings procSettings;
+        procSettings.HiddenWindow = true;
+        procSettings.WorkingDirectory = data.OriginalOutputPath;
+        procSettings.FileName = TEXT("/usr/bin/hdiutil");
+        procSettings.Arguments = String::Format(TEXT("create {0}.dmg -volname {0} -fs HFS+ -srcfolder {0}.app"), appName);
+        const int32 result = Platform::CreateProcess(procSettings);
+        if (result != 0)
+        {
+            data.Error(String::Format(TEXT("Failed to package app (result code: {0}). See log for more info."), result));
+            return true;
+        }
+        // TODO: sign dmg
+        LOG(Info, "Output application package: {0} (size: {1} MB)", dmgPath, FileSystem::GetFileSize(dmgPath) / 1024 / 1024);
     }
-    // TODO: sign dmg
-    LOG(Info, "Output application package: {0} (size: {1} MB)", dmgPath, FileSystem::GetFileSize(dmgPath) / 1024 / 1024);
 
     return false;
 }
 
+void MacPlatformTools::OnRun(CookingData& data, String& executableFile, String& commandLineFormat, String& workingDir)
+{
+    // Pick the first executable file
+    Array<String> files;
+    FileSystem::DirectoryGetFiles(files, data.NativeCodeOutputPath, TEXT("*"), DirectorySearchOption::TopDirectoryOnly);
+    for (auto& file : files)
+    {
+        if (FileSystem::GetExtension(file).IsEmpty())
+        {
+            executableFile = file;
+            break;
+        }
+    }
+}
+
 #endif

Source/Editor/Cooker/Platform/Mac/MacPlatformTools.h

@@ -27,6 +27,7 @@ public:
     bool IsNativeCodeFile(CookingData& data, const String& file) override;
     void OnBuildStarted(CookingData& data) override;
     bool OnPostProcess(CookingData& data) override;
+    void OnRun(CookingData& data, String& executableFile, String& commandLineFormat, String& workingDir) override;
 };
 
 #endif

Source/Editor/Cooker/Platform/iOS/iOSPlatformTools.cpp

@@ -260,15 +260,20 @@ bool iOSPlatformTools::OnPostProcess(CookingData& data)
     {
         LOG(Info, "Building app package...");
         const Char* configuration = data.Configuration == BuildConfiguration::Release ? TEXT("Release") : TEXT("Debug");
-        String command = String::Format(TEXT("xcodebuild -project FlaxGame.xcodeproj -configuration {} -scheme FlaxGame -archivePath FlaxGame.xcarchive archive"), configuration);
+        CreateProcessSettings procSettings;
-        int32 result = Platform::RunProcess(command, data.OriginalOutputPath);
+        procSettings.HiddenWindow = true;
+        procSettings.WorkingDirectory = data.OriginalOutputPath;
+        procSettings.FileName = TEXT("/usr/bin/xcodebuild");
+        procSettings.Arguments = String::Format(TEXT("-project FlaxGame.xcodeproj -configuration {} -scheme FlaxGame -archivePath FlaxGame.xcarchive archive"), configuration);
+        int32 result = Platform::CreateProcess(procSettings);
         if (result != 0)
         {
             data.Error(String::Format(TEXT("Failed to package app (result code: {0}). See log for more info."), result));
             return true;
         }
-        command = TEXT("xcodebuild -exportArchive -archivePath FlaxGame.xcarchive -allowProvisioningUpdates -exportPath . -exportOptionsPlist ExportOptions.plist");
+        procSettings.FileName = TEXT("/usr/bin/xcodebuild");
-        result = Platform::RunProcess(command, data.OriginalOutputPath);
+        procSettings.Arguments = TEXT("-exportArchive -archivePath FlaxGame.xcarchive -allowProvisioningUpdates -exportPath . -exportOptionsPlist ExportOptions.plist");
+        result = Platform::CreateProcess(procSettings);
         if (result != 0)
         {
             data.Error(String::Format(TEXT("Failed to package app (result code: {0}). See log for more info."), result));

Source/Editor/Cooker/Steps/CompileScriptsStep.cpp

@@ -188,8 +188,8 @@ bool CompileScriptsStep::Perform(CookingData& data)
     LOG(Info, "Starting scripts compilation for game...");
     const String logFile = data.CacheDirectory / TEXT("CompileLog.txt");
     auto args = String::Format(
-        TEXT("-log -logfile=\"{4}\" -build -mutex -buildtargets={0} -platform={1} -arch={2} -configuration={3} -aotMode={5}"),
+        TEXT("-log -logfile=\"{4}\" -build -mutex -buildtargets={0} -platform={1} -arch={2} -configuration={3} -aotMode={5} {6}"),
-        target, platform, architecture, configuration, logFile, ToString(data.Tools->UseAOT()));
+        target, platform, architecture, configuration, logFile, ToString(data.Tools->UseAOT()), GAME_BUILD_DOTNET_VER);
 #if PLATFORM_WINDOWS
     if (data.Platform == BuildPlatform::LinuxX64)
 #elif PLATFORM_LINUX

Source/Editor/Cooker/Steps/CookAssetsStep.cpp

@@ -1270,7 +1270,7 @@ bool CookAssetsStep::Perform(CookingData& data)
     {
         Array<CookingData::AssetTypeStatistics> assetTypes;
         data.Stats.AssetStats.GetValues(assetTypes);
-        Sorting::QuickSort(assetTypes.Get(), assetTypes.Count());
+        Sorting::QuickSort(assetTypes);
 
         LOG(Info, "");
         LOG(Info, "Top assets types stats:");

Source/Editor/Cooker/Steps/DeployDataStep.cpp

@@ -48,21 +48,21 @@ bool DeployDataStep::Perform(CookingData& data)
     }
     if (buildSettings.SkipDotnetPackaging && data.Tools->UseSystemDotnet())
     {
-        // Use system-installed .Net Runtime
+        // Use system-installed .NET Runtime
         FileSystem::DeleteDirectory(dstDotnet);
     }
     else
     {
-        // Deploy .Net Runtime files
+        // Deploy .NET Runtime files
         FileSystem::CreateDirectory(dstDotnet);
         String srcDotnet = depsRoot / TEXT("Dotnet");
         if (FileSystem::DirectoryExists(srcDotnet))
         {
-            // Use prebuilt .Net installation for that platform
+            // Use prebuilt .NET installation for that platform
-            LOG(Info, "Using .Net Runtime {} at {}", data.Tools->GetName(), srcDotnet);
+            LOG(Info, "Using .NET Runtime {} at {}", data.Tools->GetName(), srcDotnet);
             if (EditorUtilities::CopyDirectoryIfNewer(dstDotnet, srcDotnet, true))
             {
-                data.Error(TEXT("Failed to copy .Net runtime data files."));
+                data.Error(TEXT("Failed to copy .NET runtime data files."));
                 return true;
             }
         }
@@ -85,9 +85,9 @@ bool DeployDataStep::Perform(CookingData& data)
             }
             if (canUseSystemDotnet && (aotMode == DotNetAOTModes::None || aotMode == DotNetAOTModes::ILC))
             {
-                // Ask Flax.Build to provide .Net SDK location for the current platform
+                // Ask Flax.Build to provide .NET SDK location for the current platform
                 String sdks;
-                bool failed = ScriptsBuilder::RunBuildTool(TEXT("-log -logMessagesOnly -logFileWithConsole -logfile=SDKs.txt -printSDKs"), data.CacheDirectory);
+                bool failed = ScriptsBuilder::RunBuildTool(String::Format(TEXT("-log -logMessagesOnly -logFileWithConsole -logfile=SDKs.txt -printSDKs {}"), GAME_BUILD_DOTNET_VER), data.CacheDirectory);
                 failed |= File::ReadAllText(data.CacheDirectory / TEXT("SDKs.txt"), sdks);
                 int32 idx = sdks.Find(TEXT("DotNetSdk, "), StringSearchCase::CaseSensitive);
                 if (idx != -1)
@@ -101,7 +101,7 @@ bool DeployDataStep::Perform(CookingData& data)
                 }
                 if (failed || !FileSystem::DirectoryExists(srcDotnet))
                 {
-                    data.Error(TEXT("Failed to get .Net SDK location for a current platform."));
+                    data.Error(TEXT("Failed to get .NET SDK location for the current host platform."));
                     return true;
                 }
 
@@ -110,19 +110,25 @@ bool DeployDataStep::Perform(CookingData& data)
                 FileSystem::GetChildDirectories(versions, srcDotnet / TEXT("host/fxr"));
                 if (versions.Count() == 0)
                 {
-                    data.Error(TEXT("Failed to get .Net SDK location for a current platform."));
+                    data.Error(TEXT("Failed to find any .NET hostfxr versions for the current host platform."));
                     return true;
                 }
                 for (String& version : versions)
                 {
                     version = String(StringUtils::GetFileName(version));
-                    if (!version.StartsWith(TEXT("7.")))
+                    if (!version.StartsWith(TEXT("7.")) && !version.StartsWith(TEXT("8."))) // .NET 7 or .NET 8
                         version.Clear();
                 }
-                Sorting::QuickSort(versions.Get(), versions.Count());
+                Sorting::QuickSort(versions);
                 const String version = versions.Last();
+                if (version.IsEmpty())
+                {
+                    data.Error(TEXT("Failed to find supported .NET hostfxr version for the current host platform."));
+                    return true;
+                }
+
                 FileSystem::NormalizePath(srcDotnet);
-                LOG(Info, "Using .Net Runtime {} at {}", version, srcDotnet);
+                LOG(Info, "Using .NET Runtime {} at {}", version, srcDotnet);
 
                 // Check if previously deployed files are valid (eg. system-installed .NET was updated from version 7.0.3 to 7.0.5)
                 {
@@ -131,7 +137,8 @@ bool DeployDataStep::Perform(CookingData& data)
                     if (FileSystem::DirectoryExists(dstDotnet))
                     {
                         String cachedData;
-                        File::ReadAllText(dotnetCacheFilePath, cachedData);
+                        if (FileSystem::FileExists(dotnetCacheFilePath))
+                            File::ReadAllText(dotnetCacheFilePath, cachedData);
                         if (cachedData != dotnetCachedValue)
                         {
                             FileSystem::DeleteDirectory(dstDotnet);
@@ -157,17 +164,17 @@ bool DeployDataStep::Perform(CookingData& data)
                 }
                 if (failed)
                 {
-                    data.Error(TEXT("Failed to copy .Net runtime data files."));
+                    data.Error(TEXT("Failed to copy .NET runtime data files."));
                     return true;
                 }
             }
             else
             {
-                // Ask Flax.Build to provide .Net Host Runtime location for the target platform
+                // Ask Flax.Build to provide .NET Host Runtime location for the target platform
                 String sdks;
                 const Char *platformName, *archName;
                 data.GetBuildPlatformName(platformName, archName);
-                String args = String::Format(TEXT("-log -logMessagesOnly -logFileWithConsole -logfile=SDKs.txt -printDotNetRuntime -platform={} -arch={}"), platformName, archName);
+                String args = String::Format(TEXT("-log -logMessagesOnly -logFileWithConsole -logfile=SDKs.txt -printDotNetRuntime -platform={} -arch={} {}"), platformName, archName, GAME_BUILD_DOTNET_VER);
                 bool failed = ScriptsBuilder::RunBuildTool(args, data.CacheDirectory);
                 failed |= File::ReadAllText(data.CacheDirectory / TEXT("SDKs.txt"), sdks);
                 Array<String> parts;
@@ -179,11 +186,11 @@ bool DeployDataStep::Perform(CookingData& data)
                 }
                 if (failed || !FileSystem::DirectoryExists(srcDotnet))
                 {
-                    data.Error(TEXT("Failed to get .Net SDK location for a current platform."));
+                    data.Error(TEXT("Failed to get .NET SDK location for the current host platform."));
                     return true;
                 }
                 FileSystem::NormalizePath(srcDotnet);
-                LOG(Info, "Using .Net Runtime {} at {}", TEXT("Host"), srcDotnet);
+                LOG(Info, "Using .NET Runtime {} at {}", TEXT("Host"), srcDotnet);
 
                 // Deploy runtime files
                 const Char* corlibPrivateName = TEXT("System.Private.CoreLib.dll");
@@ -248,7 +255,7 @@ bool DeployDataStep::Perform(CookingData& data)
                     DEPLOY_NATIVE_FILE("libmonosgen-2.0.dylib");
                     DEPLOY_NATIVE_FILE("libSystem.IO.Compression.Native.dylib");
                     DEPLOY_NATIVE_FILE("libSystem.Native.dylib");
-                    DEPLOY_NATIVE_FILE("libSystem.Net.Security.Native.dylib");
+                    DEPLOY_NATIVE_FILE("libSystem.NET.Security.Native.dylib");
                     DEPLOY_NATIVE_FILE("libSystem.Security.Cryptography.Native.Apple.dylib");
                     break;
 #undef DEPLOY_NATIVE_FILE
@@ -256,7 +263,7 @@ bool DeployDataStep::Perform(CookingData& data)
                 }
                 if (failed)
                 {
-                    data.Error(TEXT("Failed to copy .Net runtime data files."));
+                    data.Error(TEXT("Failed to copy .NET runtime data files."));
                     return true;
                 }
             }
@@ -268,8 +275,8 @@ bool DeployDataStep::Perform(CookingData& data)
             LOG(Info, "Optimizing .NET class library size to include only used assemblies");
             const String logFile = data.CacheDirectory / TEXT("StripDotnetLibs.txt");
             String args = String::Format(
-                TEXT("-log -logfile=\"{}\" -runDotNetClassLibStripping -mutex -binaries=\"{}\""),
+                TEXT("-log -logfile=\"{}\" -runDotNetClassLibStripping -mutex -binaries=\"{}\" {}"),
-                logFile, data.DataOutputPath);
+                logFile, data.DataOutputPath, GAME_BUILD_DOTNET_VER);
             for (const String& define : data.CustomDefines)
             {
                 args += TEXT(" -D");
@@ -277,7 +284,7 @@ bool DeployDataStep::Perform(CookingData& data)
             }
             if (ScriptsBuilder::RunBuildTool(args))
             {
-                data.Error(TEXT("Failed to optimize .Net class library."));
+                data.Error(TEXT("Failed to optimize .NET class library."));
                 return true;
             }
         }
@@ -360,7 +367,7 @@ bool DeployDataStep::Perform(CookingData& data)
     data.AddRootEngineAsset(PRE_INTEGRATED_GF_ASSET_NAME);
     data.AddRootEngineAsset(SMAA_AREA_TEX);
     data.AddRootEngineAsset(SMAA_SEARCH_TEX);
-    if (data.Configuration != BuildConfiguration::Release)
+    if (!buildSettings.SkipDefaultFonts)
         data.AddRootEngineAsset(TEXT("Editor/Fonts/Roboto-Regular"));
 
     // Register custom assets (eg. plugins)

Source/Editor/Cooker/Steps/PrecompileAssembliesStep.cpp

@@ -67,8 +67,8 @@ bool PrecompileAssembliesStep::Perform(CookingData& data)
     data.GetBuildPlatformName(platform, architecture);
     const String logFile = data.CacheDirectory / TEXT("AOTLog.txt");
     String args = String::Format(
-        TEXT("-log -logfile=\"{}\" -runDotNetAOT -mutex -platform={} -arch={} -configuration={} -aotMode={} -binaries=\"{}\" -intermediate=\"{}\""),
+        TEXT("-log -logfile=\"{}\" -runDotNetAOT -mutex -platform={} -arch={} -configuration={} -aotMode={} -binaries=\"{}\" -intermediate=\"{}\" {}"),
-        logFile, platform, architecture, configuration, ToString(aotMode), data.DataOutputPath, data.ManagedCodeOutputPath);
+        logFile, platform, architecture, configuration, ToString(aotMode), data.DataOutputPath, data.ManagedCodeOutputPath, GAME_BUILD_DOTNET_VER);
     if (!buildSettings.SkipUnusedDotnetLibsPackaging)
         args += TEXT(" -skipUnusedDotnetLibs=false"); // Run AOT on whole class library (not just used libs)
     for (const String& define : data.CustomDefines)

Source/Editor/CustomEditors/CustomEditor.cs

@@ -7,9 +7,8 @@ using FlaxEditor.CustomEditors.GUI;
 using FlaxEditor.Scripting;
 using FlaxEngine;
 using FlaxEngine.GUI;
+using FlaxEngine.Json;
 using FlaxEngine.Utilities;
-using Newtonsoft.Json;
-using JsonSerializer = FlaxEngine.Json.JsonSerializer;
 
 namespace FlaxEditor.CustomEditors
 {
@@ -157,6 +156,12 @@ namespace FlaxEditor.CustomEditors
             var values = _values;
             var presenter = _presenter;
             var layout = _layout;
+            if (layout.Editors.Count > 1)
+            {
+                // There are more editors using the same layout so rebuild parent editor to prevent removing others editors
+                _parent?.RebuildLayout();
+                return;
+            }
             var control = layout.ContainerControl;
             var parent = _parent;
             var parentScrollV = (_presenter?.Panel.Parent as Panel)?.VScrollBar?.Value ?? -1;
@@ -380,22 +385,22 @@ namespace FlaxEditor.CustomEditors
             LinkedLabel = label;
         }
 
-        private void RevertDiffToDefault(CustomEditor editor)
+        /// <summary>
-        {
+        /// If true, the value reverting to default/reference will be handled via iteration over children editors, instead of for a whole object at once.
-            if (editor.ChildrenEditors.Count == 0)
+        /// </summary>
-            {
+        public virtual bool RevertValueWithChildren => ChildrenEditors.Count != 0;
-                // Skip if no change detected
-                if (!editor.Values.IsDefaultValueModified)
-                    return;
 
-                editor.SetValueToDefault();
+        private void RevertDiffToDefault()
+        {
+            if (RevertValueWithChildren)
+            {
+                foreach (var child in ChildrenEditors)
+                    child.RevertDiffToDefault();
             }
             else
             {
-                for (int i = 0; i < editor.ChildrenEditors.Count; i++)
+                if (Values.IsDefaultValueModified)
-                {
+                    SetValueToDefault();
-                    RevertDiffToDefault(editor.ChildrenEditors[i]);
-                }
             }
         }
 
@@ -408,11 +413,6 @@ namespace FlaxEditor.CustomEditors
             {
                 if (!Values.IsDefaultValueModified)
                     return false;
-
-                // Skip array items (show diff only on a bottom level properties and fields)
-                if (ParentEditor is Editors.ArrayEditor)
-                    return false;
-
                 return true;
             }
         }
@@ -424,7 +424,7 @@ namespace FlaxEditor.CustomEditors
         {
             if (!Values.HasDefaultValue)
                 return;
-            RevertDiffToDefault(this);
+            RevertDiffToDefault();
         }
 
         /// <summary>
@@ -462,22 +462,17 @@ namespace FlaxEditor.CustomEditors
             }
         }
 
-        private void RevertDiffToReference(CustomEditor editor)
+        private void RevertDiffToReference()
         {
-            if (editor.ChildrenEditors.Count == 0)
+            if (RevertValueWithChildren)
             {
-                // Skip if no change detected
+                foreach (var child in ChildrenEditors)
-                if (!editor.Values.IsReferenceValueModified)
+                    child.RevertDiffToReference();
-                    return;
-
-                editor.SetValueToReference();
             }
             else
             {
-                for (int i = 0; i < editor.ChildrenEditors.Count; i++)
+                if (Values.IsReferenceValueModified)
-                {
+                    SetValueToReference();
-                    RevertDiffToReference(editor.ChildrenEditors[i]);
-                }
             }
         }
 
@@ -490,11 +485,6 @@ namespace FlaxEditor.CustomEditors
             {
                 if (!Values.IsReferenceValueModified)
                     return false;
-
-                // Skip array items (show diff only on a bottom level properties and fields)
-                if (ParentEditor is Editors.ArrayEditor)
-                    return false;
-
                 return true;
             }
         }
@@ -506,7 +496,7 @@ namespace FlaxEditor.CustomEditors
         {
             if (!Values.HasReferenceValue)
                 return;
-            RevertDiffToReference(this);
+            RevertDiffToReference();
         }
 
         /// <summary>
@@ -651,7 +641,7 @@ namespace FlaxEditor.CustomEditors
                 // Default
                 try
                 {
-                    obj = JsonConvert.DeserializeObject(text, TypeUtils.GetType(Values.Type), JsonSerializer.Settings);
+                    obj = Newtonsoft.Json.JsonConvert.DeserializeObject(text, TypeUtils.GetType(Values.Type), JsonSerializer.Settings);
                 }
                 catch
                 {
@@ -756,7 +746,7 @@ namespace FlaxEditor.CustomEditors
         /// </summary>
         public void SetValueToDefault()
         {
-            SetValue(Values.DefaultValue);
+            SetValueCloned(Values.DefaultValue);
         }
 
         /// <summary>
@@ -793,7 +783,19 @@ namespace FlaxEditor.CustomEditors
                 return;
             }
 
-            SetValue(Values.ReferenceValue);
+            SetValueCloned(Values.ReferenceValue);
+        }
+
+        private void SetValueCloned(object value)
+        {
+            // For objects (eg. arrays) we need to clone them to prevent editing default/reference value within editor
+            if (value != null && !value.GetType().IsValueType)
+            {
+                var json = JsonSerializer.Serialize(value);
+                value = JsonSerializer.Deserialize(json, value.GetType());
+            }
+
+            SetValue(value);
         }
 
         /// <summary>
@@ -805,7 +807,6 @@ namespace FlaxEditor.CustomEditors
         {
             if (_isSetBlocked)
                 return;
-
             if (OnDirty(this, value, token))
             {
                 _hasValueDirty = true;

Source/Editor/CustomEditors/CustomEditorPresenter.cs

@@ -37,6 +37,23 @@ namespace FlaxEditor.CustomEditors
         UseDefault = 1 << 2,
     }
 
+    /// <summary>
+    /// The interface for Editor context that owns the presenter. Can be <see cref="FlaxEditor.Windows.PropertiesWindow"/> or <see cref="FlaxEditor.Windows.Assets.PrefabWindow"/> or other window/panel - custom editor scan use it for more specific features.
+    /// </summary>
+    public interface IPresenterOwner
+    {
+        /// <summary>
+        /// Gets the viewport linked with properties presenter (optional, null if unused).
+        /// </summary>
+        public Viewport.EditorViewport PresenterViewport { get; }
+
+        /// <summary>
+        /// Selects the scene objects.
+        /// </summary>
+        /// <param name="nodes">The nodes to select</param>
+        public void Select(List<SceneGraph.SceneGraphNode> nodes);
+    }
+
     /// <summary>
     /// Main class for Custom Editors used to present selected objects properties and allow to modify them.
     /// </summary>
@@ -68,8 +85,15 @@ namespace FlaxEditor.CustomEditors
             /// <inheritdoc />
             public override void Update(float deltaTime)
             {
-                // Update editors
+                try
-                _presenter.Update();
+                {
+                    // Update editors
+                    _presenter.Update();
+                }
+                catch (Exception ex)
+                {
+                    FlaxEditor.Editor.LogWarning(ex);
+                }
 
                 base.Update(deltaTime);
             }
@@ -254,7 +278,7 @@ namespace FlaxEditor.CustomEditors
         /// <summary>
         /// The Editor context that owns this presenter. Can be <see cref="FlaxEditor.Windows.PropertiesWindow"/> or <see cref="FlaxEditor.Windows.Assets.PrefabWindow"/> or other window/panel - custom editor scan use it for more specific features.
         /// </summary>
-        public object Owner;
+        public IPresenterOwner Owner;
 
         /// <summary>
         /// Gets or sets the text to show when no object is selected.
@@ -270,7 +294,24 @@ namespace FlaxEditor.CustomEditors
             }
         }
 
+        /// <summary>
+        /// Gets or sets the value indicating whether properties are read-only.
+        /// </summary>
+        public bool ReadOnly
+        {
+            get => _readOnly;
+            set
+            {
+                if (_readOnly != value)
+                {
+                    _readOnly = value;
+                    UpdateReadOnly();
+                }
+            }
+        }
+
         private bool _buildOnUpdate;
+        private bool _readOnly;
 
         /// <summary>
         /// Initializes a new instance of the <see cref="CustomEditorPresenter"/> class.
@@ -278,7 +319,7 @@ namespace FlaxEditor.CustomEditors
         /// <param name="undo">The undo. It's optional.</param>
         /// <param name="noSelectionText">The custom text to display when no object is selected. Default is No selection.</param>
         /// <param name="owner">The owner of the presenter.</param>
-        public CustomEditorPresenter(Undo undo, string noSelectionText = null, object owner = null)
+        public CustomEditorPresenter(Undo undo, string noSelectionText = null, IPresenterOwner owner = null)
         {
             Undo = undo;
             Owner = owner;
@@ -364,6 +405,8 @@ namespace FlaxEditor.CustomEditors
             // Restore scroll value
             if (parentScrollV > -1)
                 panel.VScrollBar.Value = parentScrollV;
+            if (_readOnly)
+                UpdateReadOnly();
         }
 
         /// <summary>
@@ -374,6 +417,16 @@ namespace FlaxEditor.CustomEditors
             _buildOnUpdate = true;
         }
 
+        private void UpdateReadOnly()
+        {
+            // Only scrollbars are enabled
+            foreach (var child in Panel.Children)
+            {
+                if (!(child is ScrollBar))
+                    child.Enabled = !_readOnly;
+            }
+        }
+
         private void ExpandGroups(LayoutElementsContainer c, bool open)
         {
             if (c is Elements.GroupElement group)

Source/Editor/CustomEditors/Dedicated/ClothEditor.cs

@@ -0,0 +1,97 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+using FlaxEditor.Gizmo;
+using FlaxEditor.Scripting;
+using FlaxEngine;
+using FlaxEngine.GUI;
+using FlaxEngine.Json;
+using FlaxEngine.Tools;
+
+namespace FlaxEditor.CustomEditors.Dedicated
+{
+    /// <summary>
+    /// Custom editor for <see cref="Cloth"/>.
+    /// </summary>
+    /// <seealso cref="ActorEditor" />
+    [CustomEditor(typeof(Cloth)), DefaultEditor]
+    class ClothEditor : ActorEditor
+    {
+        private ClothPaintingGizmoMode _gizmoMode;
+        private Viewport.Modes.EditorGizmoMode _prevMode;
+
+        /// <inheritdoc />
+        public override void Initialize(LayoutElementsContainer layout)
+        {
+            base.Initialize(layout);
+
+            if (Values.Count != 1)
+                return;
+
+            // Add gizmo painting mode to the viewport
+            var owner = Presenter.Owner;
+            if (owner == null)
+                return;
+            var gizmoOwner = owner as IGizmoOwner ?? owner.PresenterViewport as IGizmoOwner;
+            if (gizmoOwner == null)
+                return;
+            var gizmos = gizmoOwner.Gizmos;
+            _gizmoMode = new ClothPaintingGizmoMode();
+
+            var projectCache = Editor.Instance.ProjectCache;
+            if (projectCache.TryGetCustomData("ClothGizmoPaintValue", out var cachedPaintValue))
+                _gizmoMode.PaintValue = JsonSerializer.Deserialize<float>(cachedPaintValue);
+            if (projectCache.TryGetCustomData("ClothGizmoContinuousPaint", out var cachedContinuousPaint))
+                _gizmoMode.ContinuousPaint = JsonSerializer.Deserialize<bool>(cachedContinuousPaint);
+            if (projectCache.TryGetCustomData("ClothGizmoBrushFalloff", out var cachedBrushFalloff))
+                _gizmoMode.BrushFalloff = JsonSerializer.Deserialize<float>(cachedBrushFalloff);
+            if (projectCache.TryGetCustomData("ClothGizmoBrushSize", out var cachedBrushSize))
+                _gizmoMode.BrushSize = JsonSerializer.Deserialize<float>(cachedBrushSize);
+            if (projectCache.TryGetCustomData("ClothGizmoBrushStrength", out var cachedBrushStrength))
+                _gizmoMode.BrushStrength = JsonSerializer.Deserialize<float>(cachedBrushStrength);
+
+            gizmos.AddMode(_gizmoMode);
+            _prevMode = gizmos.ActiveMode;
+            gizmos.ActiveMode = _gizmoMode;
+            _gizmoMode.Gizmo.SetPaintCloth((Cloth)Values[0]);
+
+            // Insert gizmo mode options to properties editing
+            var paintGroup = layout.Group("Cloth Painting");
+            var paintValue = new ReadOnlyValueContainer(new ScriptType(typeof(ClothPaintingGizmoMode)), _gizmoMode);
+            paintGroup.Object(paintValue);
+            {
+                var grid = paintGroup.CustomContainer<UniformGridPanel>();
+                var gridControl = grid.CustomControl;
+                gridControl.ClipChildren = false;
+                gridControl.Height = Button.DefaultHeight;
+                gridControl.SlotsHorizontally = 2;
+                gridControl.SlotsVertically = 1;
+                grid.Button("Fill", "Fills the cloth particles with given paint value.").Button.Clicked += _gizmoMode.Gizmo.Fill;
+                grid.Button("Reset", "Clears the cloth particles paint.").Button.Clicked += _gizmoMode.Gizmo.Reset;
+            }
+        }
+
+        /// <inheritdoc />
+        protected override void Deinitialize()
+        {
+            // Cleanup gizmos
+            if (_gizmoMode != null)
+            {
+                var gizmos = _gizmoMode.Owner.Gizmos;
+                if (gizmos.ActiveMode == _gizmoMode)
+                    gizmos.ActiveMode = _prevMode;
+                gizmos.RemoveMode(_gizmoMode);
+                var projectCache = Editor.Instance.ProjectCache;
+                projectCache.SetCustomData("ClothGizmoPaintValue", JsonSerializer.Serialize(_gizmoMode.PaintValue, typeof(float)));
+                projectCache.SetCustomData("ClothGizmoContinuousPaint", JsonSerializer.Serialize(_gizmoMode.ContinuousPaint, typeof(bool)));
+                projectCache.SetCustomData("ClothGizmoBrushFalloff", JsonSerializer.Serialize(_gizmoMode.BrushFalloff, typeof(float)));
+                projectCache.SetCustomData("ClothGizmoBrushSize", JsonSerializer.Serialize(_gizmoMode.BrushSize, typeof(float)));
+                projectCache.SetCustomData("ClothGizmoBrushStrength", JsonSerializer.Serialize(_gizmoMode.BrushStrength, typeof(float)));
+                _gizmoMode.Dispose();
+                _gizmoMode = null;
+            }
+            _prevMode = null;
+
+            base.Deinitialize();
+        }
+    }
+}

Source/Editor/CustomEditors/Dedicated/MeshReferenceEditor.cs

@@ -0,0 +1,349 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+using System;
+using System.IO;
+using System.Linq;
+using FlaxEditor.CustomEditors.Editors;
+using FlaxEditor.CustomEditors.Elements;
+using FlaxEditor.GUI;
+using FlaxEditor.Scripting;
+using FlaxEngine;
+using FlaxEngine.GUI;
+
+namespace FlaxEditor.CustomEditors.Dedicated
+{
+    /// <summary>
+    /// Custom editor for <see cref="ModelInstanceActor.MeshReference"/>.
+    /// </summary>
+    /// <seealso cref="ActorEditor" />
+    [CustomEditor(typeof(ModelInstanceActor.MeshReference)), DefaultEditor]
+    public class MeshReferenceEditor : CustomEditor
+    {
+        private class MeshRefPickerControl : Control
+        {
+            private ModelInstanceActor.MeshReference _value = new ModelInstanceActor.MeshReference { LODIndex = -1, MeshIndex = -1 };
+            private string _valueName;
+            private Float2 _mousePos;
+
+            public string[][] MeshNames;
+            public event Action ValueChanged;
+
+            public ModelInstanceActor.MeshReference Value
+            {
+                get => _value;
+                set
+                {
+                    if (_value.LODIndex == value.LODIndex && _value.MeshIndex == value.MeshIndex)
+                        return;
+                    _value = value;
+                    if (value.LODIndex == -1 || value.MeshIndex == -1)
+                        _valueName = null;
+                    else if (MeshNames.Length == 1)
+                        _valueName = MeshNames[value.LODIndex][value.MeshIndex];
+                    else
+                        _valueName = $"LOD{value.LODIndex} - {MeshNames[value.LODIndex][value.MeshIndex]}";
+                    ValueChanged?.Invoke();
+                }
+            }
+
+            public MeshRefPickerControl()
+            : base(0, 0, 50, 16)
+            {
+            }
+
+            private void ShowDropDownMenu()
+            {
+                // Show context menu with tree structure of LODs and meshes
+                Focus();
+                var cm = new ItemsListContextMenu(200);
+                var meshNames = MeshNames;
+                var actor = _value.Actor;
+                for (int lodIndex = 0; lodIndex < meshNames.Length; lodIndex++)
+                {
+                    var item = new ItemsListContextMenu.Item
+                    {
+                        Name = "LOD" + lodIndex,
+                        Tag = new ModelInstanceActor.MeshReference { Actor = actor, LODIndex = lodIndex, MeshIndex = 0 },
+                        TintColor = new Color(0.8f, 0.8f, 1.0f, 0.8f),
+                    };
+                    cm.AddItem(item);
+
+                    for (int meshIndex = 0; meshIndex < meshNames[lodIndex].Length; meshIndex++)
+                    {
+                        item = new ItemsListContextMenu.Item
+                        {
+                            Name = "     " + meshNames[lodIndex][meshIndex],
+                            Tag = new ModelInstanceActor.MeshReference { Actor = actor, LODIndex = lodIndex, MeshIndex = meshIndex },
+                        };
+                        if (_value.LODIndex == lodIndex && _value.MeshIndex == meshIndex)
+                            item.BackgroundColor = FlaxEngine.GUI.Style.Current.BackgroundSelected;
+                        cm.AddItem(item);
+                    }
+                }
+                cm.ItemClicked += item => Value = (ModelInstanceActor.MeshReference)item.Tag;
+                cm.Show(Parent, BottomLeft);
+            }
+
+            /// <inheritdoc />
+            public override void Draw()
+            {
+                base.Draw();
+
+                // Cache data
+                var style = FlaxEngine.GUI.Style.Current;
+                bool isSelected = _valueName != null;
+                bool isEnabled = EnabledInHierarchy;
+                var frameRect = new Rectangle(0, 0, Width, 16);
+                if (isSelected)
+                    frameRect.Width -= 16;
+                frameRect.Width -= 16;
+                var nameRect = new Rectangle(2, 1, frameRect.Width - 4, 14);
+                var button1Rect = new Rectangle(nameRect.Right + 2, 1, 14, 14);
+                var button2Rect = new Rectangle(button1Rect.Right + 2, 1, 14, 14);
+
+                // Draw frame
+                Render2D.DrawRectangle(frameRect, isEnabled && (IsMouseOver || IsNavFocused) ? style.BorderHighlighted : style.BorderNormal);
+
+                // Check if has item selected
+                if (isSelected)
+                {
+                    // Draw name
+                    Render2D.PushClip(nameRect);
+                    Render2D.DrawText(style.FontMedium, _valueName, nameRect, isEnabled ? style.Foreground : style.ForegroundDisabled, TextAlignment.Near, TextAlignment.Center);
+                    Render2D.PopClip();
+
+                    // Draw deselect button
+                    Render2D.DrawSprite(style.Cross, button1Rect, isEnabled && button1Rect.Contains(_mousePos) ? style.Foreground : style.ForegroundGrey);
+                }
+                else
+                {
+                    // Draw info
+                    Render2D.DrawText(style.FontMedium, "-", nameRect, isEnabled ? Color.OrangeRed : Color.DarkOrange, TextAlignment.Near, TextAlignment.Center);
+                }
+
+                // Draw picker button
+                var pickerRect = isSelected ? button2Rect : button1Rect;
+                Render2D.DrawSprite(style.ArrowDown, pickerRect, isEnabled && pickerRect.Contains(_mousePos) ? style.Foreground : style.ForegroundGrey);
+            }
+
+            /// <inheritdoc />
+            public override void OnMouseEnter(Float2 location)
+            {
+                _mousePos = location;
+
+                base.OnMouseEnter(location);
+            }
+
+            /// <inheritdoc />
+            public override void OnMouseLeave()
+            {
+                _mousePos = Float2.Minimum;
+
+                base.OnMouseLeave();
+            }
+
+            /// <inheritdoc />
+            public override void OnMouseMove(Float2 location)
+            {
+                _mousePos = location;
+
+                base.OnMouseMove(location);
+            }
+
+            /// <inheritdoc />
+            public override bool OnMouseUp(Float2 location, MouseButton button)
+            {
+                // Cache data
+                bool isSelected = _valueName != null;
+                var frameRect = new Rectangle(0, 0, Width, 16);
+                if (isSelected)
+                    frameRect.Width -= 16;
+                frameRect.Width -= 16;
+                var nameRect = new Rectangle(2, 1, frameRect.Width - 4, 14);
+                var button1Rect = new Rectangle(nameRect.Right + 2, 1, 14, 14);
+                var button2Rect = new Rectangle(button1Rect.Right + 2, 1, 14, 14);
+
+                // Deselect
+                if (isSelected && button1Rect.Contains(ref location))
+                    Value = new ModelInstanceActor.MeshReference { Actor = null, LODIndex = -1, MeshIndex = -1 };
+
+                // Picker dropdown menu
+                if ((isSelected ? button2Rect : button1Rect).Contains(ref location))
+                    ShowDropDownMenu();
+
+                return base.OnMouseUp(location, button);
+            }
+
+            /// <inheritdoc />
+            public override bool OnMouseDoubleClick(Float2 location, MouseButton button)
+            {
+                Focus();
+
+                // Open model editor window
+                if (_value.Actor is StaticModel staticModel)
+                    Editor.Instance.ContentEditing.Open(staticModel.Model);
+                else if (_value.Actor is AnimatedModel animatedModel)
+                    Editor.Instance.ContentEditing.Open(animatedModel.SkinnedModel);
+
+                return base.OnMouseDoubleClick(location, button);
+            }
+
+            /// <inheritdoc />
+            public override void OnSubmit()
+            {
+                base.OnSubmit();
+
+                ShowDropDownMenu();
+            }
+
+            /// <inheritdoc />
+            public override void OnDestroy()
+            {
+                MeshNames = null;
+                _valueName = null;
+
+                base.OnDestroy();
+            }
+        }
+
+        private ModelInstanceActor _actor;
+        private CustomElement<FlaxObjectRefPickerControl> _actorPicker;
+        private CustomElement<MeshRefPickerControl> _meshPicker;
+
+        /// <inheritdoc />
+        public override DisplayStyle Style => DisplayStyle.Inline;
+
+        /// <inheritdoc />
+        public override void Initialize(LayoutElementsContainer layout)
+        {
+            // Get the context actor to pick the mesh from it
+            if (GetActor(out var actor))
+            {
+                // TODO: support editing multiple values
+                layout.Label("Different values");
+                return;
+            }
+            _actor = actor;
+
+            if (ParentEditor.Values.Any(x => x is Cloth))
+            {
+                // Cloth always picks the parent model mesh
+                if (actor == null)
+                {
+                    layout.Label("Cloth needs to be added as a child to model actor.");
+                }
+            }
+            else
+            {
+                // Actor reference picker
+                _actorPicker = layout.Custom<FlaxObjectRefPickerControl>();
+                _actorPicker.CustomControl.Type = new ScriptType(typeof(ModelInstanceActor));
+                _actorPicker.CustomControl.ValueChanged += () => SetValue(new ModelInstanceActor.MeshReference { Actor = (ModelInstanceActor)_actorPicker.CustomControl.Value });
+            }
+
+            if (actor != null)
+            {
+                // Get mesh names hierarchy
+                string[][] meshNames;
+                if (actor is StaticModel staticModel)
+                {
+                    var model = staticModel.Model;
+                    if (model == null || model.WaitForLoaded())
+                    {
+                        layout.Label("No model.");
+                        return;
+                    }
+                    var materials = model.MaterialSlots;
+                    var lods = model.LODs;
+                    meshNames = new string[lods.Length][];
+                    for (int lodIndex = 0; lodIndex < lods.Length; lodIndex++)
+                    {
+                        var lodMeshes = lods[lodIndex].Meshes;
+                        meshNames[lodIndex] = new string[lodMeshes.Length];
+                        for (int meshIndex = 0; meshIndex < lodMeshes.Length; meshIndex++)
+                        {
+                            var mesh = lodMeshes[meshIndex];
+                            var materialName = materials[mesh.MaterialSlotIndex].Name;
+                            if (string.IsNullOrEmpty(materialName) && materials[mesh.MaterialSlotIndex].Material)
+                                materialName = Path.GetFileNameWithoutExtension(materials[mesh.MaterialSlotIndex].Material.Path);
+                            if (string.IsNullOrEmpty(materialName))
+                                meshNames[lodIndex][meshIndex] = $"Mesh {meshIndex}";
+                            else
+                                meshNames[lodIndex][meshIndex] = $"Mesh {meshIndex} ({materialName})";
+                        }
+                    }
+                }
+                else if (actor is AnimatedModel animatedModel)
+                {
+                    var skinnedModel = animatedModel.SkinnedModel;
+                    if (skinnedModel == null || skinnedModel.WaitForLoaded())
+                    {
+                        layout.Label("No model.");
+                        return;
+                    }
+                    var materials = skinnedModel.MaterialSlots;
+                    var lods = skinnedModel.LODs;
+                    meshNames = new string[lods.Length][];
+                    for (int lodIndex = 0; lodIndex < lods.Length; lodIndex++)
+                    {
+                        var lodMeshes = lods[lodIndex].Meshes;
+                        meshNames[lodIndex] = new string[lodMeshes.Length];
+                        for (int meshIndex = 0; meshIndex < lodMeshes.Length; meshIndex++)
+                        {
+                            var mesh = lodMeshes[meshIndex];
+                            var materialName = materials[mesh.MaterialSlotIndex].Name;
+                            if (string.IsNullOrEmpty(materialName) && materials[mesh.MaterialSlotIndex].Material)
+                                materialName = Path.GetFileNameWithoutExtension(materials[mesh.MaterialSlotIndex].Material.Path);
+                            if (string.IsNullOrEmpty(materialName))
+                                meshNames[lodIndex][meshIndex] = $"Mesh {meshIndex}";
+                            else
+                                meshNames[lodIndex][meshIndex] = $"Mesh {meshIndex} ({materialName})";
+                        }
+                    }
+                }
+                else
+                    return; // Not supported model type
+
+                // Mesh reference picker
+                _meshPicker = layout.Custom<MeshRefPickerControl>();
+                _meshPicker.CustomControl.MeshNames = meshNames;
+                _meshPicker.CustomControl.Value = (ModelInstanceActor.MeshReference)Values[0];
+                _meshPicker.CustomControl.ValueChanged += () => SetValue(_meshPicker.CustomControl.Value);
+            }
+        }
+
+        /// <inheritdoc />
+        public override void Refresh()
+        {
+            base.Refresh();
+
+            if (_actorPicker != null)
+            {
+                GetActor(out var actor);
+                _actorPicker.CustomControl.Value = actor;
+                if (actor != _actor)
+                {
+                    RebuildLayout();
+                    return;
+                }
+            }
+            if (_meshPicker != null)
+            {
+                _meshPicker.CustomControl.Value = (ModelInstanceActor.MeshReference)Values[0];
+            }
+        }
+
+        private bool GetActor(out ModelInstanceActor actor)
+        {
+            actor = null;
+            foreach (ModelInstanceActor.MeshReference value in Values)
+            {
+                if (actor == null)
+                    actor = value.Actor;
+                else if (actor != value.Actor)
+                    return true;
+            }
+            return false;
+        }
+    }
+}

Source/Editor/CustomEditors/Dedicated/MissingScriptEditor.cs

@@ -0,0 +1,156 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+using FlaxEditor.Actions;
+using FlaxEditor.CustomEditors.Editors;
+using FlaxEditor.GUI;
+using FlaxEditor.GUI.ContextMenu;
+using FlaxEditor.Scripting;
+using FlaxEngine;
+using FlaxEngine.GUI;
+using System.Collections.Generic;
+
+namespace FlaxEditor.CustomEditors.Dedicated;
+
+/// <summary>
+/// The missing script editor.
+/// </summary>
+[CustomEditor(typeof(MissingScript)), DefaultEditor]
+public class MissingScriptEditor : GenericEditor
+{
+    private DropPanel _dropPanel;
+    private Button _replaceScriptButton;
+    private CheckBox _shouldReplaceAllCheckbox;
+
+    /// <inheritdoc />
+    public override void Initialize(LayoutElementsContainer layout)
+    {
+        if (layout.ContainerControl is not DropPanel dropPanel)
+        {
+            base.Initialize(layout);
+            return;
+        }
+        _dropPanel = dropPanel;
+        _dropPanel.HeaderTextColor = Color.OrangeRed;
+
+        var replaceScriptPanel = new Panel
+        {
+            Parent = _dropPanel,
+            Height = 64,
+        };
+        _replaceScriptButton = new Button
+        {
+            Text = "Replace Script",
+            TooltipText = "Replaces the missing script with a given script type",
+            AnchorPreset = AnchorPresets.TopCenter,
+            Bounds = new Rectangle(-120, 0, 240, 24),
+            Parent = replaceScriptPanel,
+        };
+        _replaceScriptButton.Clicked += OnReplaceScriptButtonClicked;
+        var replaceAllLabel = new Label
+        {
+            Text = "Replace all matching missing scripts",
+            TooltipText = "Whether or not to apply this script change to all scripts missing the same type.",
+            AnchorPreset = AnchorPresets.BottomCenter,
+            Y = -38,
+            Parent = replaceScriptPanel,
+        };
+        _shouldReplaceAllCheckbox = new CheckBox
+        {
+            TooltipText = replaceAllLabel.TooltipText,
+            AnchorPreset = AnchorPresets.BottomCenter,
+            Y = -38,
+            Parent = replaceScriptPanel,
+        };
+        _shouldReplaceAllCheckbox.X -= _replaceScriptButton.Width * 0.5f + 0.5f;
+        replaceAllLabel.X -= 52;
+
+        base.Initialize(layout);
+    }
+
+    private void FindActorsWithMatchingMissingScript(List<MissingScript> missingScripts)
+    {
+        foreach (Actor actor in Level.GetActors(typeof(Actor)))
+        {
+            for (int scriptIndex = 0; scriptIndex < actor.ScriptsCount; scriptIndex++)
+            {
+                Script actorScript = actor.Scripts[scriptIndex];
+                if (actorScript is not MissingScript missingActorScript)
+                    continue;
+
+                MissingScript currentMissing = Values[0] as MissingScript;
+                if (missingActorScript.MissingTypeName != currentMissing.MissingTypeName)
+                    continue;
+
+                missingScripts.Add(missingActorScript);
+            }
+        }
+    }
+
+    private void RunReplacementMultiCast(List<IUndoAction> actions)
+    {
+        if (actions.Count == 0)
+        {
+            Editor.LogWarning("Failed to replace scripts!");
+            return;
+        }
+
+        var multiAction = new MultiUndoAction(actions);
+        multiAction.Do();
+        var presenter = ParentEditor.Presenter;
+        if (presenter != null)
+        {
+            presenter.Undo.AddAction(multiAction);
+            presenter.Control.Focus();
+        }
+    }
+
+    private void ReplaceScript(ScriptType script, bool replaceAllInScene)
+    {
+        var actions = new List<IUndoAction>(4);
+
+        var missingScripts = new List<MissingScript>();
+        if (!replaceAllInScene)
+            missingScripts.Add((MissingScript)Values[0]);
+        else
+            FindActorsWithMatchingMissingScript(missingScripts);
+
+        foreach (var missingScript in missingScripts)
+            actions.Add(AddRemoveScript.Add(missingScript.Actor, script));
+        RunReplacementMultiCast(actions);
+
+        for (int actionIdx = 0; actionIdx < actions.Count; actionIdx++)
+        {
+            AddRemoveScript addRemoveScriptAction = (AddRemoveScript)actions[actionIdx];
+            int orderInParent = addRemoveScriptAction.GetOrderInParent();
+
+            Script newScript = missingScripts[actionIdx].Actor.Scripts[orderInParent];
+            missingScripts[actionIdx].ReferenceScript = newScript;
+        }
+        actions.Clear();
+
+        foreach (var missingScript in missingScripts)
+            actions.Add(AddRemoveScript.Remove(missingScript));
+        RunReplacementMultiCast(actions);
+    }
+
+    private void OnReplaceScriptButtonClicked()
+    {
+        var scripts = Editor.Instance.CodeEditing.Scripts.Get();
+        if (scripts.Count == 0)
+        {
+            // No scripts
+            var cm1 = new ContextMenu();
+            cm1.AddButton("No scripts in project");
+            cm1.Show(_dropPanel, _replaceScriptButton.BottomLeft);
+            return;
+        }
+
+        // Show context menu with list of scripts to add
+        var cm = new ItemsListContextMenu(180);
+        for (int i = 0; i < scripts.Count; i++)
+            cm.AddItem(new TypeSearchPopup.TypeItemView(scripts[i]));
+        cm.ItemClicked += item => ReplaceScript((ScriptType)item.Tag, _shouldReplaceAllCheckbox.Checked);
+        cm.SortItems();
+        cm.Show(_dropPanel, _replaceScriptButton.BottomLeft - new Float2((cm.Width - _replaceScriptButton.Width) / 2, 0));
+    }
+}

Source/Editor/CustomEditors/Dedicated/ModelPrefabEditor.cs

@@ -0,0 +1,84 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+using System;
+using System.IO;
+using FlaxEditor.Content;
+using FlaxEditor.CustomEditors.Editors;
+using FlaxEngine;
+using FlaxEngine.GUI;
+using FlaxEngine.Tools;
+
+namespace FlaxEditor.CustomEditors.Dedicated;
+
+/// <summary>
+/// The missing script editor.
+/// </summary>
+[CustomEditor(typeof(ModelPrefab)), DefaultEditor]
+public class ModelPrefabEditor : GenericEditor
+{
+    private Guid _prefabId;
+    private Button _reimportButton;
+    private string _importPath;
+
+    /// <inheritdoc />
+    public override void Initialize(LayoutElementsContainer layout)
+    {
+        base.Initialize(layout);
+
+        var modelPrefab = Values[0] as ModelPrefab;
+        if (modelPrefab == null)
+            return;
+        _prefabId = modelPrefab.PrefabID;
+        while (true)
+        {
+            if (_prefabId == Guid.Empty)
+            {
+                break;
+            }
+
+            var prefab = FlaxEngine.Content.Load<Prefab>(_prefabId);
+            if (prefab)
+            {
+                var prefabObjectId = modelPrefab.PrefabObjectID;
+                var prefabObject = prefab.GetDefaultInstance(ref prefabObjectId);
+                if (prefabObject.PrefabID == _prefabId)
+                    break;
+                _prefabId = prefabObject.PrefabID;
+            }
+        }
+
+        var button = layout.Button("Reimport", "Reimports the source asset as prefab.");
+        _reimportButton = button.Button;
+        _reimportButton.Clicked += OnReimport;
+    }
+
+    private void OnReimport()
+    {
+        var prefab = FlaxEngine.Content.Load<Prefab>(_prefabId);
+        var modelPrefab = (ModelPrefab)Values[0];
+        var importPath = modelPrefab.ImportPath;
+        var editor = Editor.Instance;
+        if (editor.ContentImporting.GetReimportPath("Model Prefab", ref importPath))
+            return;
+        var folder = editor.ContentDatabase.Find(Path.GetDirectoryName(prefab.Path)) as ContentFolder;
+        if (folder == null)
+            return;
+        var importOptions = modelPrefab.ImportOptions;
+        importOptions.Type = ModelTool.ModelType.Prefab;
+        _importPath = importPath;
+        _reimportButton.Enabled = false;
+        editor.ContentImporting.ImportFileEnd += OnImportFileEnd;
+        editor.ContentImporting.Import(importPath, folder, true, importOptions);
+    }
+
+    private void OnImportFileEnd(IFileEntryAction entry, bool failed)
+    {
+        if (entry.SourceUrl == _importPath)
+        {
+            // Restore button
+            _importPath = null;
+            _reimportButton.Enabled = true;
+            Editor.Instance.ContentImporting.ImportFileEnd -= OnImportFileEnd;
+        }
+    }
+}

Source/Editor/CustomEditors/Dedicated/ParticleEffectEditor.cs

@@ -25,9 +25,20 @@ namespace FlaxEditor.CustomEditors.Dedicated
             get
             {
                 // All selected particle effects use the same system
-                var effect = (ParticleEffect)Values[0];
+                var effect = Values[0] as ParticleEffect;
-                var system = effect.ParticleSystem;
+                var system = effect ? effect.ParticleSystem : null;
-                return system != null && Values.TrueForAll(x => (x as ParticleEffect)?.ParticleSystem == system);
+                if (system && Values.TrueForAll(x => x is ParticleEffect fx && fx && fx.ParticleSystem == system))
+                {
+                    // All parameters can be accessed
+                    var parameters = effect.Parameters;
+                    foreach (var parameter in parameters)
+                    {
+                        if (!parameter)
+                            return false;
+                    }
+                    return true;
+                }
+                return false;
             }
         }
 

Source/Editor/CustomEditors/Dedicated/RagdollEditor.cs

@@ -50,7 +50,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
                 grid.Button("Remove bone").Button.ButtonClicked += OnRemoveBone;
             }
 
-            if (Presenter.Owner is Windows.PropertiesWindow || Presenter.Owner is Windows.Assets.PrefabWindow)
+            if (Presenter.Owner != null)
             {
                 // Selection
                 var grid = editorGroup.CustomContainer<UniformGridPanel>();
@@ -309,10 +309,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
                 if (node != null)
                     selection.Add(node);
             }
-            if (Presenter.Owner is Windows.PropertiesWindow propertiesWindow)
+            Presenter.Owner.Select(selection);
-                propertiesWindow.Editor.SceneEditing.Select(selection);
-            else if (Presenter.Owner is Windows.Assets.PrefabWindow prefabWindow)
-                prefabWindow.Select(selection);
         }
     }
 }

Source/Editor/CustomEditors/Dedicated/ScriptsEditor.cs

@@ -25,6 +25,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
         private DragHandlers _dragHandlers;
         private DragScriptItems _dragScripts;
         private DragAssets _dragAssets;
+        private Button _addScriptsButton;
 
         /// <summary>
         /// The parent scripts editor.
@@ -40,16 +41,19 @@ namespace FlaxEditor.CustomEditors.Dedicated
             AutoFocus = false;
 
             // Add script button
-            float addScriptButtonWidth = 60.0f;
+            var buttonText = "Add script";
-            var addScriptButton = new Button
+            var textSize = Style.Current.FontMedium.MeasureText(buttonText);
+            float addScriptButtonWidth = (textSize.X < 60.0f) ? 60.0f : textSize.X + 4;
+            var buttonHeight = (textSize.Y < 18) ? 18 : textSize.Y + 4;
+            _addScriptsButton = new Button
             {
                 TooltipText = "Add new scripts to the actor",
                 AnchorPreset = AnchorPresets.MiddleCenter,
-                Text = "Add script",
+                Text = buttonText,
                 Parent = this,
-                Bounds = new Rectangle((Width - addScriptButtonWidth) / 2, 1, addScriptButtonWidth, 18),
+                Bounds = new Rectangle((Width - addScriptButtonWidth) / 2, 1, addScriptButtonWidth, buttonHeight),
             };
-            addScriptButton.ButtonClicked += OnAddScriptButtonClicked;
+            _addScriptsButton.ButtonClicked += OnAddScriptButtonClicked;
         }
 
         private void OnAddScriptButtonClicked(Button button)
@@ -82,7 +86,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
             var size = Size;
 
             // Info
-            Render2D.DrawText(style.FontSmall, "Drag scripts here", new Rectangle(2, 22, size.X - 4, size.Y - 4 - 20), style.ForegroundDisabled, TextAlignment.Center, TextAlignment.Center);
+            Render2D.DrawText(style.FontSmall, "Drag scripts here", new Rectangle(2, _addScriptsButton.Height + 4, size.X - 4, size.Y - 4 - 20), style.ForegroundDisabled, TextAlignment.Center, TextAlignment.Center);
 
             // Check if drag is over
             if (IsDragOver && _dragHandlers != null && _dragHandlers.HasValidDrag)
@@ -242,6 +246,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
             var multiAction = new MultiUndoAction(actions);
             multiAction.Do();
             var presenter = ScriptsEditor.Presenter;
+            ScriptsEditor.ParentEditor?.RebuildLayout();
             if (presenter != null)
             {
                 presenter.Undo.AddAction(multiAction);
@@ -254,27 +259,15 @@ namespace FlaxEditor.CustomEditors.Dedicated
     /// Small image control added per script group that allows to drag and drop a reference to it. Also used to reorder the scripts.
     /// </summary>
     /// <seealso cref="FlaxEngine.GUI.Image" />
-    internal class ScriptDragIcon : Image
+    internal class DragImage : Image
     {
-        private ScriptsEditor _editor;
         private bool _isMouseDown;
         private Float2 _mouseDownPos;
 
         /// <summary>
-        /// Gets the target script.
+        /// Action called when drag event should start.
         /// </summary>
-        public Script Script => (Script)Tag;
+        public Action<DragImage> Drag;
-
-        /// <summary>
-        /// Initializes a new instance of the <see cref="ScriptDragIcon"/> class.
-        /// </summary>
-        /// <param name="editor">The script editor.</param>
-        /// <param name="script">The target script.</param>
-        public ScriptDragIcon(ScriptsEditor editor, Script script)
-        {
-            Tag = script;
-            _editor = editor;
-        }
 
         /// <inheritdoc />
         public override void OnMouseEnter(Float2 location)
@@ -287,11 +280,10 @@ namespace FlaxEditor.CustomEditors.Dedicated
         /// <inheritdoc />
         public override void OnMouseLeave()
         {
-            // Check if start drag drop
             if (_isMouseDown)
             {
-                DoDrag();
                 _isMouseDown = false;
+                Drag(this);
             }
 
             base.OnMouseLeave();
@@ -300,11 +292,10 @@ namespace FlaxEditor.CustomEditors.Dedicated
         /// <inheritdoc />
         public override void OnMouseMove(Float2 location)
         {
-            // Check if start drag drop
             if (_isMouseDown && Float2.Distance(location, _mouseDownPos) > 10.0f)
             {
-                DoDrag();
                 _isMouseDown = false;
+                Drag(this);
             }
 
             base.OnMouseMove(location);
@@ -315,8 +306,8 @@ namespace FlaxEditor.CustomEditors.Dedicated
         {
             if (button == MouseButton.Left)
             {
-                // Clear flag
                 _isMouseDown = false;
+                return true;
             }
 
             return base.OnMouseUp(location, button);
@@ -327,21 +318,13 @@ namespace FlaxEditor.CustomEditors.Dedicated
         {
             if (button == MouseButton.Left)
             {
-                // Set flag
                 _isMouseDown = true;
                 _mouseDownPos = location;
+                return true;
             }
 
             return base.OnMouseDown(location, button);
         }
-
-        private void DoDrag()
-        {
-            var script = Script;
-            _editor.OnScriptDragChange(true, script);
-            DoDragDrop(DragScripts.GetDragData(script));
-            _editor.OnScriptDragChange(false, script);
-        }
     }
 
     internal class ScriptArrangeBar : Control
@@ -576,8 +559,8 @@ namespace FlaxEditor.CustomEditors.Dedicated
                     return;
                 for (int j = 0; j < e.Length; j++)
                 {
-                    var t1 = scripts[j]?.TypeName;
+                    var t1 = scripts[j] != null ? scripts[j].TypeName : null;
-                    var t2 = e[j]?.TypeName;
+                    var t2 = e[j] != null ? e[j].TypeName : null;
                     if (t1 != t2)
                         return;
                 }
@@ -639,7 +622,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
                 _scriptToggles[i] = scriptToggle;
 
                 // Add drag button to the group
-                var scriptDrag = new ScriptDragIcon(this, script)
+                var scriptDrag = new DragImage
                 {
                     TooltipText = "Script reference",
                     AutoFocus = true,
@@ -650,6 +633,13 @@ namespace FlaxEditor.CustomEditors.Dedicated
                     Margin = new Margin(1),
                     Brush = new SpriteBrush(Editor.Instance.Icons.DragBar12),
                     Tag = script,
+                    Drag = img =>
+                    {
+                        var s = (Script)img.Tag;
+                        OnScriptDragChange(true, s);
+                        img.DoDragDrop(DragScripts.GetDragData(s));
+                        OnScriptDragChange(false, s);
+                    }
                 };
 
                 // Add settings button to the group

Source/Editor/CustomEditors/Dedicated/SplineEditor.cs

@@ -1,9 +1,12 @@
 // Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
-using FlaxEditor.Actions;
+using System;
-using FlaxEditor.SceneGraph.Actors;
+using System.Collections.Generic;
 using FlaxEngine;
-using FlaxEngine.GUI;
+using FlaxEditor.Actions;
+using FlaxEditor.SceneGraph;
+using FlaxEditor.SceneGraph.Actors;
+using FlaxEditor.GUI.Tabs;
 
 namespace FlaxEditor.CustomEditors.Dedicated
 {
@@ -14,54 +17,853 @@ namespace FlaxEditor.CustomEditors.Dedicated
     [CustomEditor(typeof(Spline)), DefaultEditor]
     public class SplineEditor : ActorEditor
     {
+        /// <summary>
+        /// Storage undo spline data
+        /// </summary>
+        private struct UndoData
+        {
+            public Spline Spline;
+            public BezierCurve<Transform>.Keyframe[] BeforeKeyframes;
+        }
+
+        /// <summary>
+        /// Basis for creating tangent manipulation types for bezier curves.
+        /// </summary>
+        private class EditTangentOptionBase
+        {
+            /// <summary>
+            /// Called when user set selected tangent mode.
+            /// </summary>
+            /// <param name="spline">Current spline selected on editor viewport.</param>
+            /// <param name="index">Index of current keyframe selected on spline.</param>
+            public virtual void OnSetMode(Spline spline, int index)
+            {
+            }
+
+            /// <summary>
+            /// Called when user select a keyframe (spline point) of current selected spline on editor viewport.
+            /// </summary>
+            /// <param name="spline">Current spline selected on editor viewport.</param>
+            /// <param name="index">Index of current keyframe selected on spline.</param>
+            public virtual void OnSelectKeyframe(Spline spline, int index)
+            {
+            }
+
+            /// <summary>
+            /// Called when user select a tangent of current keyframe selected from spline.
+            /// </summary>
+            /// <param name="spline">Current spline selected on editor viewport.</param>
+            /// <param name="index">Index of current keyframe selected on spline.</param>
+            public virtual void OnSelectTangent(Spline spline, int index)
+            {
+            }
+
+            /// <summary>
+            /// Called when the tangent in from current keyframe selected from spline is moved on editor viewport.
+            /// </summary>
+            /// <param name="spline">Current spline selected on editor viewport.</param>
+            /// <param name="index">Index of current keyframe selected on spline.</param>
+            public virtual void OnMoveTangentIn(Spline spline, int index)
+            {
+            }
+
+            /// <summary>
+            /// Called when the tangent out from current keyframe selected from spline is moved on editor viewport.
+            /// </summary>
+            /// <param name="spline">Current spline selected on editor viewport.</param>
+            /// <param name="index">Current spline selected on editor viewport.</param>
+            public virtual void OnMoveTangentOut(Spline spline, int index)
+            {
+            }
+        }
+
+        /// <summary>
+        /// Edit curve options manipulate the curve as free mode
+        /// </summary>
+        private sealed class FreeTangentMode : EditTangentOptionBase
+        {
+            /// <inheritdoc/>
+            public override void OnSetMode(Spline spline, int index)
+            {
+                if (IsLinearTangentMode(spline, index) || IsSmoothInTangentMode(spline, index) || IsSmoothOutTangentMode(spline, index))
+                {
+                    SetPointSmooth(spline, index);
+                }
+            }
+        }
+
+        /// <summary>
+        /// Edit curve options to set tangents to linear
+        /// </summary>
+        private sealed class LinearTangentMode : EditTangentOptionBase
+        {
+            /// <inheritdoc/>
+            public override void OnSetMode(Spline spline, int index)
+            {
+                SetKeyframeLinear(spline, index);
+
+                // change the selection to tangent parent (a spline point / keyframe)
+                SetSelectSplinePointNode(spline, index);
+            }
+        }
+
+        /// <summary>
+        /// Edit curve options to align tangents of selected spline
+        /// </summary>
+        private sealed class AlignedTangentMode : EditTangentOptionBase
+        {
+            /// <inheritdoc/>
+            public override void OnSetMode(Spline spline, int index)
+            {
+                SmoothIfNotAligned(spline, index);
+            }
+
+            /// <inheritdoc/>
+            public override void OnSelectKeyframe(Spline spline, int index)
+            {
+                SmoothIfNotAligned(spline, index);
+            }
+
+            /// <inheritdoc/>
+            public override void OnMoveTangentIn(Spline spline, int index)
+            {
+                SetPointAligned(spline, index, true);
+            }
+
+            /// <inheritdoc/>
+            public override void OnMoveTangentOut(Spline spline, int index)
+            {
+                SetPointAligned(spline, index, false);
+            }
+
+            private void SmoothIfNotAligned(Spline spline, int index)
+            {
+                if (!IsAlignedTangentMode(spline, index))
+                {
+                    SetPointSmooth(spline, index);
+                }
+            }
+
+            private void SetPointAligned(Spline spline, int index, bool alignWithIn)
+            {
+                var keyframe = spline.GetSplineKeyframe(index);
+                var referenceTangent = alignWithIn ? keyframe.TangentIn : keyframe.TangentOut;
+                var otherTangent = !alignWithIn ? keyframe.TangentIn : keyframe.TangentOut;
+
+                // inverse of reference tangent
+                otherTangent.Translation = -referenceTangent.Translation.Normalized * otherTangent.Translation.Length;
+
+                if (alignWithIn)
+                    keyframe.TangentOut = otherTangent;
+                if (!alignWithIn)
+                    keyframe.TangentIn = otherTangent;
+
+                spline.SetSplineKeyframe(index, keyframe);
+            }
+        }
+
+        /// <summary>
+        /// Edit curve options manipulate the curve setting selected point 
+        /// tangent in as smoothed but tangent out as linear
+        /// </summary>
+        private sealed class SmoothInTangentMode : EditTangentOptionBase
+        {
+            /// <inheritdoc/>
+            public override void OnSetMode(Spline spline, int index)
+            {
+                SetTangentSmoothIn(spline, index);
+                SetSelectTangentIn(spline, index);
+            }
+        }
+
+        /// <summary>
+        /// Edit curve options manipulate the curve setting selected point 
+        /// tangent in as linear but tangent out as smoothed
+        /// </summary>
+        private sealed class SmoothOutTangentMode : EditTangentOptionBase
+        {
+            /// <inheritdoc/>
+            public override void OnSetMode(Spline spline, int index)
+            {
+                SetTangentSmoothOut(spline, index);
+                SetSelectTangentOut(spline, index);
+            }
+        }
+
+        private sealed class IconTab : Tab
+        {
+            private sealed class IconTabHeader : Tabs.TabHeader
+            {
+                public IconTabHeader(Tabs tabs, Tab tab)
+                : base(tabs, tab)
+                {
+                }
+
+                public override bool OnMouseUp(Float2 location, MouseButton button)
+                {
+                    if (EnabledInHierarchy && Tab.Enabled)
+                        ((IconTab)Tab)._action();
+                    return true;
+                }
+
+                public override void Draw()
+                {
+                    base.Draw();
+
+                    var tab = (IconTab)Tab;
+                    var enabled = EnabledInHierarchy && tab.EnabledInHierarchy;
+                    var style = FlaxEngine.GUI.Style.Current;
+                    var size = Size;
+                    var textHeight = 16.0f;
+                    var iconSize = size.Y - textHeight;
+                    var iconRect = new Rectangle((Width - iconSize) / 2, 0, iconSize, iconSize);
+                    if (tab._mirrorIcon)
+                    {
+                        iconRect.Location.X += iconRect.Size.X;
+                        iconRect.Size.X *= -1;
+                    }
+                    var color = style.Foreground;
+                    if (!enabled)
+                        color *= 0.6f;
+                    Render2D.DrawSprite(tab._customIcon, iconRect, color);
+                    Render2D.DrawText(style.FontMedium, tab._customText, new Rectangle(0, iconSize, size.X, textHeight), color, TextAlignment.Center, TextAlignment.Center);
+                }
+            }
+
+            private readonly Action _action;
+            private readonly string _customText;
+            private readonly SpriteHandle _customIcon;
+            private readonly bool _mirrorIcon;
+
+            public IconTab(Action action, string text, SpriteHandle icon, bool mirrorIcon = false)
+            : base(string.Empty, SpriteHandle.Invalid)
+            {
+                _action = action;
+                _customText = text;
+                _customIcon = icon;
+                _mirrorIcon = mirrorIcon;
+            }
+
+            public override Tabs.TabHeader CreateHeader()
+            {
+                return new IconTabHeader((Tabs)Parent, this);
+            }
+        }
+
+        private EditTangentOptionBase _currentTangentMode;
+
+        private Tabs _selectedPointsTabs, _allPointsTabs;
+        private Tab _freeTangentTab;
+        private Tab _linearTangentTab;
+        private Tab _alignedTangentTab;
+        private Tab _smoothInTangentTab;
+        private Tab _smoothOutTangentTab;
+        private Tab _setLinearAllTangentsTab;
+        private Tab _setSmoothAllTangentsTab;
+
+        private bool _tanInChanged;
+        private bool _tanOutChanged;
+        private Vector3 _lastTanInPos;
+        private Vector3 _lastTanOutPos;
+        private Spline _selectedSpline;
+        private SplineNode.SplinePointNode _selectedPoint;
+        private SplineNode.SplinePointNode _lastPointSelected;
+        private SplineNode.SplinePointTangentNode _selectedTangentIn;
+        private SplineNode.SplinePointTangentNode _selectedTangentOut;
+
+        private UndoData[] _selectedSplinesUndoData;
+
+        private bool HasPointSelected => _selectedPoint != null;
+        private bool HasTangentsSelected => _selectedTangentIn != null || _selectedTangentOut != null;
+
         /// <inheritdoc />
         public override void Initialize(LayoutElementsContainer layout)
         {
             base.Initialize(layout);
 
-            if (Values.HasDifferentTypes == false)
+            _currentTangentMode = new FreeTangentMode();
+            if (Values.HasDifferentTypes || !(Values[0] is Spline spline))
+                return;
+            _selectedSpline = spline;
+
+            layout.Space(10);
+            var tabSize = 46;
+            var icons = Editor.Instance.Icons;
+
+            layout.Header("Selected spline point");
+            _selectedPointsTabs = new Tabs
             {
-                layout.Space(10);
+                Height = tabSize,
-                var grid = layout.CustomContainer<UniformGridPanel>();
+                TabsSize = new Float2(tabSize),
-                grid.CustomControl.SlotsHorizontally = 2;
+                AutoTabsSize = true,
-                grid.CustomControl.SlotsVertically = 1;
+                Parent = layout.ContainerControl,
-                grid.Button("Set Linear Tangents").Button.Clicked += OnSetTangentsLinear;
+            };
-                grid.Button("Set Smooth Tangents").Button.Clicked += OnSetTangentsSmooth;
+            _linearTangentTab = _selectedPointsTabs.AddTab(new IconTab(OnSetSelectedLinear, "Linear", icons.SplineLinear64));
+            _freeTangentTab = _selectedPointsTabs.AddTab(new IconTab(OnSetSelectedFree, "Free", icons.SplineFree64));
+            _alignedTangentTab = _selectedPointsTabs.AddTab(new IconTab(OnSetSelectedAligned, "Aligned", icons.SplineAligned64));
+            _smoothInTangentTab = _selectedPointsTabs.AddTab(new IconTab(OnSetSelectedSmoothIn, "Smooth In", icons.SplineSmoothIn64));
+            _smoothOutTangentTab = _selectedPointsTabs.AddTab(new IconTab(OnSetSelectedSmoothOut, "Smooth Out", icons.SplineSmoothIn64, true));
+            _selectedPointsTabs.SelectedTabIndex = -1;
+
+            layout.Header("All spline points");
+            _allPointsTabs = new Tabs
+            {
+                Height = tabSize,
+                TabsSize = new Float2(tabSize),
+                AutoTabsSize = true,
+                Parent = layout.ContainerControl,
+            };
+            _setLinearAllTangentsTab = _allPointsTabs.AddTab(new IconTab(OnSetTangentsLinear, "Set Linear Tangents", icons.SplineLinear64));
+            _setSmoothAllTangentsTab = _allPointsTabs.AddTab(new IconTab(OnSetTangentsSmooth, "Set Smooth Tangents", icons.SplineAligned64));
+            _allPointsTabs.SelectedTabIndex = -1;
+
+            if (_selectedSpline)
+                _selectedSpline.SplineUpdated += OnSplineEdited;
+
+            SetSelectedTangentTypeAsCurrent();
+            UpdateEditTabsSelection();
+            UpdateButtonsEnabled();
+        }
+
+        /// <inheritdoc/>
+        protected override void Deinitialize()
+        {
+            if (_selectedSpline)
+                _selectedSpline.SplineUpdated -= OnSplineEdited;
+        }
+
+        private void OnSplineEdited()
+        {
+            UpdateEditTabsSelection();
+            UpdateButtonsEnabled();
+        }
+
+        /// <inheritdoc/>
+        public override void Refresh()
+        {
+            base.Refresh();
+
+            UpdateSelectedPoint();
+            UpdateSelectedTangent();
+
+            if (!CanEditTangent())
+                return;
+
+            var index = _lastPointSelected.Index;
+            var currentTangentInPosition = _selectedSpline.GetSplineLocalTangent(index, true).Translation;
+            var currentTangentOutPosition = _selectedSpline.GetSplineLocalTangent(index, false).Translation;
+
+            if (_selectedTangentIn != null)
+            {
+                _tanInChanged = _lastTanInPos != currentTangentInPosition;
+                _lastTanInPos = currentTangentInPosition;
             }
+
+            if (_selectedTangentOut != null)
+            {
+                _tanOutChanged = _lastTanOutPos != currentTangentOutPosition;
+                _lastTanOutPos = currentTangentOutPosition;
+            }
+
+            if (_tanInChanged)
+                _currentTangentMode.OnMoveTangentIn(_selectedSpline, index);
+            if (_tanOutChanged)
+                _currentTangentMode.OnMoveTangentOut(_selectedSpline, index);
+
+            currentTangentInPosition = _selectedSpline.GetSplineLocalTangent(index, true).Translation;
+            currentTangentOutPosition = _selectedSpline.GetSplineLocalTangent(index, false).Translation;
+
+            // Update last tangents position after changes
+            if (_selectedSpline)
+                _lastTanInPos = currentTangentInPosition;
+            if (_selectedSpline)
+                _lastTanOutPos = currentTangentOutPosition;
+            _tanInChanged = false;
+            _tanOutChanged = false;
+        }
+
+        private void SetSelectedTangentTypeAsCurrent()
+        {
+            if (_lastPointSelected == null || _selectedPoint == null)
+                return;
+            if (IsLinearTangentMode(_selectedSpline, _lastPointSelected.Index))
+                SetModeLinear();
+            else if (IsAlignedTangentMode(_selectedSpline, _lastPointSelected.Index))
+                SetModeAligned();
+            else if (IsSmoothInTangentMode(_selectedSpline, _lastPointSelected.Index))
+                SetModeSmoothIn();
+            else if (IsSmoothOutTangentMode(_selectedSpline, _lastPointSelected.Index))
+                SetModeSmoothOut();
+            else if (IsFreeTangentMode(_selectedSpline, _lastPointSelected.Index))
+                SetModeFree();
+        }
+
+        private void UpdateEditTabsSelection()
+        {
+            _selectedPointsTabs.Enabled = CanEditTangent();
+            if (!_selectedPointsTabs.Enabled)
+            {
+                _selectedPointsTabs.SelectedTabIndex = -1;
+                return;
+            }
+
+            var isFree = _currentTangentMode is FreeTangentMode;
+            var isLinear = _currentTangentMode is LinearTangentMode;
+            var isAligned = _currentTangentMode is AlignedTangentMode;
+            var isSmoothIn = _currentTangentMode is SmoothInTangentMode;
+            var isSmoothOut = _currentTangentMode is SmoothOutTangentMode;
+
+            if (isFree)
+                _selectedPointsTabs.SelectedTab = _freeTangentTab;
+            else if (isLinear)
+                _selectedPointsTabs.SelectedTab = _linearTangentTab;
+            else if (isAligned)
+                _selectedPointsTabs.SelectedTab = _alignedTangentTab;
+            else if (isSmoothIn)
+                _selectedPointsTabs.SelectedTab = _smoothInTangentTab;
+            else if (isSmoothOut)
+                _selectedPointsTabs.SelectedTab = _smoothOutTangentTab;
+            else
+                _selectedPointsTabs.SelectedTabIndex = -1;
+        }
+
+        private void UpdateButtonsEnabled()
+        {
+            _linearTangentTab.Enabled = CanEditTangent();
+            _freeTangentTab.Enabled = CanEditTangent();
+            _alignedTangentTab.Enabled = CanEditTangent();
+            _smoothInTangentTab.Enabled = CanSetTangentSmoothIn();
+            _smoothOutTangentTab.Enabled = CanSetTangentSmoothOut();
+            _setLinearAllTangentsTab.Enabled = CanSetAllTangentsLinear();
+            _setSmoothAllTangentsTab.Enabled = CanSetAllTangentsSmooth();
+        }
+
+        private bool CanEditTangent()
+        {
+            return !HasDifferentTypes && !HasDifferentValues && (HasPointSelected || HasTangentsSelected);
+        }
+
+        private bool CanSetTangentSmoothIn()
+        {
+            if (!CanEditTangent())
+                return false;
+            return _lastPointSelected.Index != 0;
+        }
+
+        private bool CanSetTangentSmoothOut()
+        {
+            if (!CanEditTangent())
+                return false;
+            return _lastPointSelected.Index < _selectedSpline.SplinePointsCount - 1;
+        }
+
+        private bool CanSetAllTangentsSmooth()
+        {
+            return _selectedSpline != null;
+        }
+
+        private bool CanSetAllTangentsLinear()
+        {
+            return _selectedSpline != null;
+        }
+
+        private void SetModeLinear()
+        {
+            if (_currentTangentMode is LinearTangentMode)
+                return;
+            _currentTangentMode = new LinearTangentMode();
+            _currentTangentMode.OnSetMode(_selectedSpline, _lastPointSelected.Index);
+        }
+
+        private void SetModeFree()
+        {
+            if (_currentTangentMode is FreeTangentMode)
+                return;
+            _currentTangentMode = new FreeTangentMode();
+            _currentTangentMode.OnSetMode(_selectedSpline, _lastPointSelected.Index);
+        }
+
+        private void SetModeAligned()
+        {
+            if (_currentTangentMode is AlignedTangentMode)
+                return;
+            _currentTangentMode = new AlignedTangentMode();
+            _currentTangentMode.OnSetMode(_selectedSpline, _lastPointSelected.Index);
+        }
+
+        private void SetModeSmoothIn()
+        {
+            if (_currentTangentMode is SmoothInTangentMode)
+                return;
+            _currentTangentMode = new SmoothInTangentMode();
+            _currentTangentMode.OnSetMode(_selectedSpline, _lastPointSelected.Index);
+        }
+
+        private void SetModeSmoothOut()
+        {
+            if (_currentTangentMode is SmoothOutTangentMode)
+                return;
+            _currentTangentMode = new SmoothOutTangentMode();
+            _currentTangentMode.OnSetMode(_selectedSpline, _lastPointSelected.Index);
+        }
+
+        private void UpdateSelectedPoint()
+        {
+            // works only if select one spline
+            if (_selectedSpline)
+            {
+                var currentSelected = Editor.Instance.SceneEditing.Selection[0];
+
+                if (currentSelected == _selectedPoint)
+                    return;
+                if (currentSelected is SplineNode.SplinePointNode selectedPoint)
+                {
+                    _selectedPoint = selectedPoint;
+                    _lastPointSelected = _selectedPoint;
+                    _currentTangentMode.OnSelectKeyframe(_selectedSpline, _lastPointSelected.Index);
+                }
+                else
+                {
+                    _selectedPoint = null;
+                }
+            }
+            else
+            {
+                _selectedPoint = null;
+            }
+
+            SetSelectedTangentTypeAsCurrent();
+            UpdateEditTabsSelection();
+            UpdateButtonsEnabled();
+        }
+
+        private void UpdateSelectedTangent()
+        {
+            // works only if select one spline
+            if (_lastPointSelected == null || Editor.Instance.SceneEditing.SelectionCount != 1)
+            {
+                _selectedTangentIn = null;
+                _selectedTangentOut = null;
+                return;
+            }
+
+            var currentSelected = Editor.Instance.SceneEditing.Selection[0];
+
+            if (currentSelected is not SplineNode.SplinePointTangentNode selectedPoint)
+            {
+                _selectedTangentIn = null;
+                _selectedTangentOut = null;
+                return;
+            }
+
+            if (currentSelected == _selectedTangentIn)
+                return;
+            if (currentSelected == _selectedTangentOut)
+                return;
+
+            var index = _lastPointSelected.Index;
+
+            if (currentSelected.Transform == _selectedSpline.GetSplineTangent(index, true))
+            {
+                _selectedTangentIn = selectedPoint;
+                _selectedTangentOut = null;
+                _currentTangentMode.OnSelectTangent(_selectedSpline, index);
+
+                return;
+            }
+
+            if (currentSelected.Transform == _selectedSpline.GetSplineTangent(index, false))
+            {
+                _selectedTangentOut = selectedPoint;
+                _selectedTangentIn = null;
+                _currentTangentMode.OnSelectTangent(_selectedSpline, index);
+                return;
+            }
+
+            _selectedTangentIn = null;
+            _selectedTangentOut = null;
+        }
+
+        private void StartEditSpline()
+        {
+            if (Presenter.Undo != null && Presenter.Undo.Enabled)
+            {
+                // Capture 'before' state for undo
+                var splines = new List<UndoData>();
+                for (int i = 0; i < Values.Count; i++)
+                {
+                    if (Values[i] is Spline spline)
+                    {
+                        splines.Add(new UndoData
+                        {
+                            Spline = spline,
+                            BeforeKeyframes = spline.SplineKeyframes.Clone() as BezierCurve<Transform>.Keyframe[]
+                        });
+                    }
+                }
+                _selectedSplinesUndoData = splines.ToArray();
+            }
+        }
+
+        private void EndEditSpline()
+        {
+            // Update buttons state
+            UpdateEditTabsSelection();
+
+            if (Presenter.Undo != null && Presenter.Undo.Enabled)
+            {
+                // Add undo
+                foreach (var splineUndoData in _selectedSplinesUndoData)
+                {
+                    Presenter.Undo.AddAction(new EditSplineAction(_selectedSpline, splineUndoData.BeforeKeyframes));
+                    SplineNode.OnSplineEdited(splineUndoData.Spline);
+                    Editor.Instance.Scene.MarkSceneEdited(splineUndoData.Spline.Scene);
+                }
+            }
+        }
+
+        private void OnSetSelectedLinear()
+        {
+            StartEditSpline();
+            SetModeLinear();
+            EndEditSpline();
+        }
+
+        private void OnSetSelectedFree()
+        {
+            StartEditSpline();
+            SetModeFree();
+            EndEditSpline();
+        }
+
+        private void OnSetSelectedAligned()
+        {
+            StartEditSpline();
+            SetModeAligned();
+            EndEditSpline();
+        }
+
+        private void OnSetSelectedSmoothIn()
+        {
+            StartEditSpline();
+            SetModeSmoothIn();
+            EndEditSpline();
+        }
+
+        private void OnSetSelectedSmoothOut()
+        {
+            StartEditSpline();
+            SetModeSmoothOut();
+            EndEditSpline();
         }
 
         private void OnSetTangentsLinear()
         {
-            var enableUndo = Presenter.Undo != null && Presenter.Undo.Enabled;
+            StartEditSpline();
-            for (int i = 0; i < Values.Count; i++)
+            _selectedSpline.SetTangentsLinear();
-            {
+            _selectedSpline.UpdateSpline();
-                if (Values[i] is Spline spline)
+            EndEditSpline();
-                {
-                    var before = enableUndo ? (BezierCurve<Transform>.Keyframe[])spline.SplineKeyframes.Clone() : null;
-                    spline.SetTangentsLinear();
-                    if (enableUndo)
-                        Presenter.Undo.AddAction(new EditSplineAction(spline, before));
-                    SplineNode.OnSplineEdited(spline);
-                    Editor.Instance.Scene.MarkSceneEdited(spline.Scene);
-                }
-            }
         }
 
         private void OnSetTangentsSmooth()
         {
-            var enableUndo = Presenter.Undo != null && Presenter.Undo.Enabled;
+            StartEditSpline();
-            for (int i = 0; i < Values.Count; i++)
+            _selectedSpline.SetTangentsSmooth();
+            _selectedSpline.UpdateSpline();
+            EndEditSpline();
+        }
+
+        private static bool IsFreeTangentMode(Spline spline, int index)
+        {
+            if (IsLinearTangentMode(spline, index) ||
+                IsAlignedTangentMode(spline, index) ||
+                IsSmoothInTangentMode(spline, index) ||
+                IsSmoothOutTangentMode(spline, index))
             {
-                if (Values[i] is Spline spline)
+                return false;
+            }
+            return true;
+        }
+
+        private static bool IsLinearTangentMode(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+            return keyframe.TangentIn.Translation.Length == 0 && keyframe.TangentOut.Translation.Length == 0;
+        }
+
+        private static bool IsAlignedTangentMode(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+            var tangentIn = keyframe.TangentIn.Translation;
+            var tangentOut = keyframe.TangentOut.Translation;
+            if (tangentIn.Length == 0 || tangentOut.Length == 0)
+                return false;
+
+            var angleBetweenTwoTangents = Vector3.Dot(tangentIn.Normalized, tangentOut.Normalized);
+            if (angleBetweenTwoTangents < -0.99f)
+                return true;
+
+            return false;
+        }
+
+        private static bool IsSmoothInTangentMode(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+            return keyframe.TangentIn.Translation.Length > 0 && keyframe.TangentOut.Translation.Length == 0;
+        }
+
+        private static bool IsSmoothOutTangentMode(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+            return keyframe.TangentOut.Translation.Length > 0 && keyframe.TangentIn.Translation.Length == 0;
+        }
+
+        private static void SetKeyframeLinear(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+            keyframe.TangentIn.Translation = Vector3.Zero;
+            keyframe.TangentOut.Translation = Vector3.Zero;
+
+            var lastSplineIndex = spline.SplinePointsCount - 1;
+            if (index == lastSplineIndex && spline.IsLoop)
+            {
+                var lastPoint = spline.GetSplineKeyframe(lastSplineIndex);
+                lastPoint.TangentIn.Translation = Vector3.Zero;
+                lastPoint.TangentOut.Translation = Vector3.Zero;
+                spline.SetSplineKeyframe(lastSplineIndex, lastPoint);
+            }
+
+            spline.SetSplineKeyframe(index, keyframe);
+            spline.UpdateSpline();
+        }
+
+        private static void SetTangentSmoothIn(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+
+            // Auto smooth tangent if's linear
+            if (keyframe.TangentIn.Translation.Length == 0)
+            {
+                var smoothRange = SplineNode.NodeSizeByDistance(spline.GetSplineTangent(index, false).Translation, 10f);
+                var previousKeyframe = spline.GetSplineKeyframe(index - 1);
+                var tangentDirection = keyframe.Value.WorldToLocalVector(previousKeyframe.Value.Translation - keyframe.Value.Translation);
+                tangentDirection = tangentDirection.Normalized * smoothRange;
+                keyframe.TangentIn.Translation = tangentDirection;
+            }
+
+            keyframe.TangentOut.Translation = Vector3.Zero;
+            spline.SetSplineKeyframe(index, keyframe);
+            spline.UpdateSpline();
+        }
+
+        private static void SetTangentSmoothOut(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+
+            // Auto smooth tangent if's linear
+            if (keyframe.TangentOut.Translation.Length == 0)
+            {
+                var smoothRange = SplineNode.NodeSizeByDistance(spline.GetSplineTangent(index, false).Translation, 10f);
+                var nextKeyframe = spline.GetSplineKeyframe(index + 1);
+                var tangentDirection = keyframe.Value.WorldToLocalVector(nextKeyframe.Value.Translation - keyframe.Value.Translation);
+                tangentDirection = tangentDirection.Normalized * smoothRange;
+                keyframe.TangentOut.Translation = tangentDirection;
+            }
+
+            keyframe.TangentIn.Translation = Vector3.Zero;
+
+            spline.SetSplineKeyframe(index, keyframe);
+            spline.UpdateSpline();
+        }
+
+        private static void SetPointSmooth(Spline spline, int index)
+        {
+            var keyframe = spline.GetSplineKeyframe(index);
+            var tangentInSize = keyframe.TangentIn.Translation.Length;
+            var tangentOutSize = keyframe.TangentOut.Translation.Length;
+
+            var isLastKeyframe = index >= spline.SplinePointsCount - 1;
+            var isFirstKeyframe = index <= 0;
+            var smoothRange = SplineNode.NodeSizeByDistance(spline.GetSplinePoint(index), 10f);
+
+            // Force smooth it's linear point
+            if (tangentInSize == 0f)
+                tangentInSize = smoothRange;
+            if (tangentOutSize == 0f)
+                tangentOutSize = smoothRange;
+
+            // Try get next / last keyframe
+            var nextKeyframe = !isLastKeyframe ? spline.GetSplineKeyframe(index + 1) : keyframe;
+            var previousKeyframe = !isFirstKeyframe ? spline.GetSplineKeyframe(index - 1) : keyframe;
+
+            // calc form from Spline.cpp -> SetTangentsSmooth
+            // get tangent direction
+            var tangentDirection = (keyframe.Value.Translation - previousKeyframe.Value.Translation + nextKeyframe.Value.Translation - keyframe.Value.Translation).Normalized;
+
+            keyframe.TangentIn.Translation = -tangentDirection;
+            keyframe.TangentOut.Translation = tangentDirection;
+
+            keyframe.TangentIn.Translation *= tangentInSize;
+            keyframe.TangentOut.Translation *= tangentOutSize;
+
+            spline.SetSplineKeyframe(index, keyframe);
+            spline.UpdateSpline();
+        }
+
+        private static SplineNode.SplinePointNode GetSplinePointNode(Spline spline, int index)
+        {
+            return (SplineNode.SplinePointNode)SceneGraphFactory.FindNode(spline.ID).ChildNodes[index];
+        }
+
+        private static SplineNode.SplinePointTangentNode GetSplineTangentInNode(Spline spline, int index)
+        {
+            var point = GetSplinePointNode(spline, index);
+            var tangentIn = spline.GetSplineTangent(index, true);
+            var tangentNodes = point.ChildNodes;
+
+            // find tangent in node comparing all child nodes position
+            for (int i = 0; i < tangentNodes.Count; i++)
+            {
+                if (tangentNodes[i].Transform.Translation == tangentIn.Translation)
                 {
-                    var before = enableUndo ? (BezierCurve<Transform>.Keyframe[])spline.SplineKeyframes.Clone() : null;
+                    return (SplineNode.SplinePointTangentNode)tangentNodes[i];
-                    spline.SetTangentsSmooth();
-                    if (enableUndo)
-                        Presenter.Undo.AddAction(new EditSplineAction(spline, before));
-                    SplineNode.OnSplineEdited(spline);
-                    Editor.Instance.Scene.MarkSceneEdited(spline.Scene);
                 }
             }
+
+            return null;
+        }
+
+        private static SplineNode.SplinePointTangentNode GetSplineTangentOutNode(Spline spline, int index)
+        {
+            var point = GetSplinePointNode(spline, index);
+            var tangentOut = spline.GetSplineTangent(index, false);
+            var tangentNodes = point.ChildNodes;
+
+            // find tangent out node comparing all child nodes position
+            for (int i = 0; i < tangentNodes.Count; i++)
+            {
+                if (tangentNodes[i].Transform.Translation == tangentOut.Translation)
+                {
+                    return (SplineNode.SplinePointTangentNode)tangentNodes[i];
+                }
+            }
+
+            return null;
+        }
+
+        private static void SetSelectSplinePointNode(Spline spline, int index)
+        {
+            Editor.Instance.SceneEditing.Select(GetSplinePointNode(spline, index));
+        }
+
+        private static void SetSelectTangentIn(Spline spline, int index)
+        {
+            Editor.Instance.SceneEditing.Select(GetSplineTangentInNode(spline, index));
+        }
+
+        private static void SetSelectTangentOut(Spline spline, int index)
+        {
+            Editor.Instance.SceneEditing.Select(GetSplineTangentOutNode(spline, index));
         }
     }
 }

Source/Editor/CustomEditors/Dedicated/UIControlEditor.cs

@@ -422,12 +422,14 @@ namespace FlaxEditor.CustomEditors.Dedicated
 
             // Set control type button
             var space = layout.Space(20);
-            float setTypeButtonWidth = 60.0f;
+            var buttonText = "Set Type";
+            var textSize = FlaxEngine.GUI.Style.Current.FontMedium.MeasureText(buttonText);
+            float setTypeButtonWidth = (textSize.X < 60.0f) ? 60.0f : textSize.X + 4;
             var setTypeButton = new Button
             {
                 TooltipText = "Sets the control to the given type",
                 AnchorPreset = AnchorPresets.MiddleCenter,
-                Text = "Set Type",
+                Text = buttonText,
                 Parent = space.Spacer,
                 Bounds = new Rectangle((space.Spacer.Width - setTypeButtonWidth) / 2, 1, setTypeButtonWidth, 18),
             };
@@ -693,7 +695,41 @@ namespace FlaxEditor.CustomEditors.Dedicated
         private void SetType(ref ScriptType controlType, UIControl uiControl)
         {
             string previousName = uiControl.Control?.GetType().Name ?? nameof(UIControl);
-            uiControl.Control = (Control)controlType.CreateInstance();
+
+            var oldControlType = (Control)uiControl.Control;
+            var newControlType = (Control)controlType.CreateInstance();
+
+            // copy old control data to new control
+            if (oldControlType != null)
+            {
+                newControlType.Visible = oldControlType.Visible;
+                newControlType.Enabled = oldControlType.Enabled;
+                newControlType.AutoFocus = oldControlType.AutoFocus;
+
+                newControlType.AnchorMin = oldControlType.AnchorMin;
+                newControlType.AnchorMax = oldControlType.AnchorMax;
+                newControlType.Offsets = oldControlType.Offsets;
+
+                newControlType.LocalLocation = oldControlType.LocalLocation;
+                newControlType.Scale = oldControlType.Scale;
+                newControlType.Bounds = oldControlType.Bounds;
+                newControlType.Width = oldControlType.Width;
+                newControlType.Height = oldControlType.Height;
+                newControlType.Center = oldControlType.Center;
+                newControlType.PivotRelative = oldControlType.PivotRelative;
+
+                newControlType.Pivot = oldControlType.Pivot;
+                newControlType.Shear = oldControlType.Shear;
+                newControlType.Rotation = oldControlType.Rotation;
+            }
+            if (oldControlType is ContainerControl oldContainer && newControlType is ContainerControl newContainer)
+            {
+                newContainer.CullChildren = oldContainer.CullChildren;
+                newContainer.ClipChildren = oldContainer.ClipChildren;
+            }
+
+            uiControl.Control = newControlType;
+
             if (uiControl.Name.StartsWith(previousName))
             {
                 string newName = controlType.Name + uiControl.Name.Substring(previousName.Length);

Source/Editor/CustomEditors/Editors/ActorLayerEditor.cs

@@ -34,7 +34,7 @@ namespace FlaxEditor.CustomEditors.Editors
                 value = 0;
 
             // If selected is single actor that has children, ask if apply layer to the sub objects as well
-            if (Values.IsSingleObject && (int)Values[0] != value && ParentEditor.Values[0] is Actor actor && actor.HasChildren)
+            if (Values.IsSingleObject && (int)Values[0] != value && ParentEditor.Values[0] is Actor actor && actor.HasChildren && !Editor.IsPlayMode)
             {
                 var valueText = comboBox.SelectedItem;
 

Source/Editor/CustomEditors/Editors/ActorTransformEditor.cs

@@ -88,20 +88,20 @@ namespace FlaxEditor.CustomEditors.Editors
                 LinkValues = Editor.Instance.Windows.PropertiesWin.ScaleLinked;
 
                 // Add button with the link icon
+
                 _linkButton = new Button
                 {
                     BackgroundBrush = new SpriteBrush(Editor.Instance.Icons.Link32),
                     Parent = LinkedLabel,
                     Width = 18,
                     Height = 18,
-                    AnchorPreset = AnchorPresets.TopLeft,
+                    AnchorPreset = AnchorPresets.MiddleLeft,
                 };
                 _linkButton.Clicked += ToggleLink;
                 ToggleEnabled();
                 SetLinkStyle();
-                var x = LinkedLabel.Text.Value.Length * 7 + 5;
+                var textSize = FlaxEngine.GUI.Style.Current.FontMedium.MeasureText(LinkedLabel.Text.Value);
-                _linkButton.LocalX += x;
+                _linkButton.LocalX += textSize.X + 10;
-                _linkButton.LocalY += 1;
                 LinkedLabel.SetupContextMenu += (label, menu, editor) =>
                 {
                     menu.AddSeparator();

Source/Editor/CustomEditors/Editors/AssetRefEditor.cs

@@ -33,7 +33,12 @@ namespace FlaxEditor.CustomEditors.Editors
     [CustomEditor(typeof(Asset)), DefaultEditor]
     public class AssetRefEditor : CustomEditor
     {
-        private AssetPicker _picker;
+        /// <summary>
+        /// The asset picker used to get a reference to an asset.
+        /// </summary>
+        public AssetPicker Picker;
+
+        private bool _isRefreshing;
         private ScriptType _valueType;
 
         /// <inheritdoc />
@@ -44,7 +49,7 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             if (HasDifferentTypes)
                 return;
-            _picker = layout.Custom<AssetPicker>().CustomControl;
+            Picker = layout.Custom<AssetPicker>().CustomControl;
 
             _valueType = Values.Type.Type != typeof(object) || Values[0] == null ? Values.Type : TypeUtils.GetObjectType(Values[0]);
             var assetType = _valueType;
@@ -66,7 +71,7 @@ namespace FlaxEditor.CustomEditors.Editors
                 {
                     // Generic file picker
                     assetType = ScriptType.Null;
-                    _picker.FileExtension = assetReference.TypeName;
+                    Picker.Validator.FileExtension = assetReference.TypeName;
                 }
                 else
                 {
@@ -75,26 +80,30 @@ namespace FlaxEditor.CustomEditors.Editors
                         assetType = customType;
                     else if (!Content.Settings.GameSettings.OptionalPlatformSettings.Contains(assetReference.TypeName))
                         Debug.LogWarning(string.Format("Unknown asset type '{0}' to use for asset picker filter.", assetReference.TypeName));
+                    else
+                        assetType = ScriptType.Void;
                 }
             }
 
-            _picker.AssetType = assetType;
+            Picker.Validator.AssetType = assetType;
-            _picker.Height = height;
+            Picker.Height = height;
-            _picker.SelectedItemChanged += OnSelectedItemChanged;
+            Picker.SelectedItemChanged += OnSelectedItemChanged;
         }
 
         private void OnSelectedItemChanged()
         {
+            if (_isRefreshing)
+                return;
             if (typeof(AssetItem).IsAssignableFrom(_valueType.Type))
-                SetValue(_picker.SelectedItem);
+                SetValue(Picker.Validator.SelectedItem);
             else if (_valueType.Type == typeof(Guid))
-                SetValue(_picker.SelectedID);
+                SetValue(Picker.Validator.SelectedID);
             else if (_valueType.Type == typeof(SceneReference))
-                SetValue(new SceneReference(_picker.SelectedID));
+                SetValue(new SceneReference(Picker.Validator.SelectedID));
             else if (_valueType.Type == typeof(string))
-                SetValue(_picker.SelectedPath);
+                SetValue(Picker.Validator.SelectedPath);
             else
-                SetValue(_picker.SelectedAsset);
+                SetValue(Picker.Validator.SelectedAsset);
         }
 
         /// <inheritdoc />
@@ -104,16 +113,18 @@ namespace FlaxEditor.CustomEditors.Editors
 
             if (!HasDifferentValues)
             {
+                _isRefreshing = true;
                 if (Values[0] is AssetItem assetItem)
-                    _picker.SelectedItem = assetItem;
+                    Picker.Validator.SelectedItem = assetItem;
                 else if (Values[0] is Guid guid)
-                    _picker.SelectedID = guid;
+                    Picker.Validator.SelectedID = guid;
                 else if (Values[0] is SceneReference sceneAsset)
-                    _picker.SelectedItem = Editor.Instance.ContentDatabase.FindAsset(sceneAsset.ID);
+                    Picker.Validator.SelectedItem = Editor.Instance.ContentDatabase.FindAsset(sceneAsset.ID);
                 else if (Values[0] is string path)
-                    _picker.SelectedPath = path;
+                    Picker.Validator.SelectedPath = path;
                 else
-                    _picker.SelectedAsset = Values[0] as Asset;
+                    Picker.Validator.SelectedAsset = Values[0] as Asset;
+                _isRefreshing = false;
             }
         }
     }

Source/Editor/CustomEditors/Editors/BehaviorKnowledgeSelectorEditor.cs

@@ -0,0 +1,198 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using FlaxEditor.GUI;
+using FlaxEditor.GUI.Tree;
+using FlaxEditor.Scripting;
+using FlaxEngine;
+using FlaxEngine.GUI;
+using FlaxEngine.Utilities;
+
+namespace FlaxEditor.CustomEditors.Editors
+{
+    /// <summary>
+    /// Custom editor for <see cref="BehaviorKnowledgeSelector{T}"/> and <see cref="BehaviorKnowledgeSelectorAny"/>.
+    /// </summary>
+    public sealed class BehaviorKnowledgeSelectorEditor : CustomEditor
+    {
+        private ClickableLabel _label;
+
+        /// <inheritdoc />
+        public override DisplayStyle Style => DisplayStyle.Inline;
+
+        /// <inheritdoc />
+        public override void Initialize(LayoutElementsContainer layout)
+        {
+            _label = layout.ClickableLabel(Path).CustomControl;
+            _label.RightClick += ShowPicker;
+            var button = new Button
+            {
+                Size = new Float2(16.0f),
+                Text = "...",
+                TooltipText = "Edit...",
+                Parent = _label,
+            };
+            button.SetAnchorPreset(AnchorPresets.MiddleRight, false, true);
+            button.Clicked += ShowPicker;
+        }
+
+        /// <inheritdoc />
+        public override void Refresh()
+        {
+            base.Refresh();
+
+            // Update label
+            _label.Text = _label.TooltipText = Path;
+        }
+
+        private string Path
+        {
+            get
+            {
+                var v = Values[0];
+                if (v is BehaviorKnowledgeSelectorAny any)
+                    return any.Path;
+                if (v is string str)
+                    return str;
+                var pathField = v.GetType().GetField("Path");
+                return pathField.GetValue(v) as string;
+            }
+            set
+            {
+                if (string.Equals(Path, value, StringComparison.Ordinal))
+                    return;
+                var v = Values[0];
+                if (v is BehaviorKnowledgeSelectorAny)
+                    v = new BehaviorKnowledgeSelectorAny(value);
+                else if (v is string)
+                    v = value;
+                else
+                {
+                    var pathField = v.GetType().GetField("Path");
+                    pathField.SetValue(v, value);
+                }
+                SetValue(v);
+            }
+        }
+
+        private void ShowPicker()
+        {
+            // Get Behavior Knowledge to select from
+            var behaviorTreeWindow = Presenter.Owner as Windows.Assets.BehaviorTreeWindow;
+            var rootNode = behaviorTreeWindow?.RootNode;
+            if (rootNode == null)
+                return;
+            var typed = ScriptType.Null;
+            var valueType = Values[0].GetType();
+            if (valueType.Name == "BehaviorKnowledgeSelector`1")
+            {
+                // Get typed selector type to show only assignable items
+                typed = new ScriptType(valueType.GenericTypeArguments[0]);
+            }
+
+            // Get customization options
+            var attributes = Values.GetAttributes();
+            var attribute = (BehaviorKnowledgeSelectorAttribute)attributes?.FirstOrDefault(x => x is BehaviorKnowledgeSelectorAttribute);
+            bool isGoalSelector = false;
+            if (attribute != null)
+            {
+                isGoalSelector = attribute.IsGoalSelector;
+            }
+
+            // Create menu with tree-like structure and search box
+            var menu = Utilities.Utils.CreateSearchPopup(out var searchBox, out var tree, 0, true);
+            var selected = Path;
+
+            // Empty
+            var noneNode = new TreeNode
+            {
+                Text = "<none>",
+                TooltipText = "Deselect value",
+                Parent = tree,
+            };
+            if (string.IsNullOrEmpty(selected))
+                tree.Select(noneNode);
+
+            if (!isGoalSelector)
+            {
+                // Blackboard
+                SetupPickerTypeItems(tree, typed, selected, "Blackboard", "Blackboard/", rootNode.BlackboardType);
+            }
+
+            // Goals
+            var goalTypes = rootNode.GoalTypes;
+            if (goalTypes?.Length != 0)
+            {
+                var goalsNode = new TreeNode
+                {
+                    Text = "Goal",
+                    TooltipText = "List of goal types defined in Blackboard Tree",
+                    Parent = tree,
+                };
+                foreach (var goalTypeName in goalTypes)
+                {
+                    var goalType = TypeUtils.GetType(goalTypeName);
+                    if (goalType == null)
+                        continue;
+                    var goalTypeNode = SetupPickerTypeItems(tree, typed, selected, goalType.Name, "Goal/" + goalTypeName + "/", goalTypeName, !isGoalSelector);
+                    goalTypeNode.Parent = goalsNode;
+                }
+                goalsNode.ExpandAll(true);
+            }
+
+            tree.SelectedChanged += delegate(List<TreeNode> before, List<TreeNode> after)
+            {
+                if (after.Count == 1)
+                {
+                    menu.Hide();
+                    Path = after[0].Tag as string;
+                }
+            };
+            menu.Show(_label, new Float2(0, _label.Height));
+        }
+
+        private TreeNode SetupPickerTypeItems(Tree tree, ScriptType typed, string selected, string text, string typePath, string typeName, bool addItems = true)
+        {
+            var type = TypeUtils.GetType(typeName);
+            if (type == null)
+                return null;
+            var typeNode = new TreeNode
+            {
+                Text = text,
+                TooltipText = type.TypeName,
+                Tag = typePath, // Ability to select whole item type data (eg. whole blackboard value)
+                Parent = tree,
+            };
+            if (typed && !typed.IsAssignableFrom(type))
+                typeNode.Tag = null;
+            if (string.Equals(selected, (string)typeNode.Tag, StringComparison.Ordinal))
+                tree.Select(typeNode);
+            if (addItems)
+            {
+                var items = GenericEditor.GetItemsForType(type, type.IsClass, true, true);
+                foreach (var item in items)
+                {
+                    if (typed && !typed.IsAssignableFrom(item.Info.ValueType))
+                        continue;
+                    if (item.Info.DeclaringType.Type == typeof(FlaxEngine.Object))
+                        continue; // Skip engine internals
+                    var itemPath = typePath + item.Info.Name;
+                    var node = new TreeNode
+                    {
+                        Text = item.DisplayName,
+                        TooltipText = item.TooltipText,
+                        Tag = itemPath,
+                        Parent = typeNode,
+                    };
+                    if (string.Equals(selected, itemPath, StringComparison.Ordinal))
+                        tree.Select(node);
+                    // TODO: add support for nested items (eg. field from blackboard structure field)
+                }
+                typeNode.Expand(true);
+            }
+            return typeNode;
+        }
+    }
+}

Source/Editor/CustomEditors/Editors/BooleanEditor.cs

@@ -34,7 +34,9 @@ namespace FlaxEditor.CustomEditors.Editors
             }
             else
             {
-                element.CheckBox.Checked = (bool)Values[0];
+                var value = (bool?)Values[0];
+                if (value != null)
+                    element.CheckBox.Checked = value.Value;
             }
         }
     }

Source/Editor/CustomEditors/Editors/CollectionEditor.cs

@@ -3,9 +3,12 @@
 using System;
 using System.Collections;
 using System.Linq;
+using FlaxEditor.Content;
 using FlaxEditor.CustomEditors.Elements;
 using FlaxEditor.CustomEditors.GUI;
 using FlaxEditor.GUI.ContextMenu;
+using FlaxEditor.GUI.Drag;
+using FlaxEditor.SceneGraph;
 using FlaxEditor.Scripting;
 using FlaxEngine;
 using FlaxEngine.GUI;
@@ -84,6 +87,7 @@ namespace FlaxEditor.CustomEditors.Editors
         protected bool NotNullItems;
 
         private IntegerValueElement _size;
+        private PropertyNameLabel _sizeLabel;
         private Color _background;
         private int _elementsCount;
         private bool _readOnly;
@@ -106,11 +110,14 @@ namespace FlaxEditor.CustomEditors.Editors
             }
         }
 
+        /// <inheritdoc />
+        public override bool RevertValueWithChildren => false; // Always revert value for a whole collection
+
         /// <inheritdoc />
         public override void Initialize(LayoutElementsContainer layout)
         {
             // No support for different collections for now
-            if (HasDifferentValues || HasDifferentTypes)
+            if (HasDifferentTypes)
                 return;
 
             var size = Count;
@@ -135,14 +142,45 @@ namespace FlaxEditor.CustomEditors.Editors
                 spacing = collection.Spacing;
             }
 
+            var dragArea = layout.CustomContainer<DragAreaControl>();
+            dragArea.CustomControl.Editor = this;
+            dragArea.CustomControl.ElementType = ElementType;
+
+            // Check for the AssetReferenceAttribute. In JSON assets, it can be used to filter
+            // which scripts can be dragged over and dropped on this collection editor.
+            var assetReference = (AssetReferenceAttribute)attributes?.FirstOrDefault(x => x is AssetReferenceAttribute);
+            if (assetReference != null)
+            {
+                if (string.IsNullOrEmpty(assetReference.TypeName))
+                {
+                }
+                else if (assetReference.TypeName.Length > 1 && assetReference.TypeName[0] == '.')
+                {
+                    dragArea.CustomControl.ElementType = ScriptType.Null;
+                    dragArea.CustomControl.FileExtension = assetReference.TypeName;
+                }
+                else
+                {
+                    var customType = TypeUtils.GetType(assetReference.TypeName);
+                    if (customType != ScriptType.Null)
+                        dragArea.CustomControl.ElementType = customType;
+                    else if (!Content.Settings.GameSettings.OptionalPlatformSettings.Contains(assetReference.TypeName))
+                        Debug.LogWarning(string.Format("Unknown asset type '{0}' to use for drag and drop filter.", assetReference.TypeName));
+                    else
+                        dragArea.CustomControl.ElementType = ScriptType.Void;
+                }
+            }
+
             // Size
             if (_readOnly || (NotNullItems && size == 0))
             {
-                layout.Label("Size", size.ToString());
+                dragArea.Label("Size", size.ToString());
             }
             else
             {
-                _size = layout.IntegerValue("Size");
+                var sizeProperty = dragArea.AddPropertyItem("Size");
+                _sizeLabel = sizeProperty.Labels.Last();
+                _size = sizeProperty.IntegerValue();
                 _size.IntValue.MinValue = 0;
                 _size.IntValue.MaxValue = ushort.MaxValue;
                 _size.IntValue.Value = size;
@@ -152,7 +190,7 @@ namespace FlaxEditor.CustomEditors.Editors
             // Elements
             if (size > 0)
             {
-                var panel = layout.VerticalPanel();
+                var panel = dragArea.VerticalPanel();
                 panel.Panel.BackgroundColor = _background;
                 var elementType = ElementType;
 
@@ -212,40 +250,45 @@ namespace FlaxEditor.CustomEditors.Editors
             // Add/Remove buttons
             if (!_readOnly)
             {
-                var area = layout.Space(20);
+                var panel = dragArea.HorizontalPanel();
-                var addButton = new Button(area.ContainerControl.Width - (16 + 16 + 2 + 2), 2, 16, 16)
+                panel.Panel.Size = new Float2(0, 20);
-                {
+                panel.Panel.Margin = new Margin(2);
-                    Text = "+",
-                    TooltipText = "Add new item",
-                    AnchorPreset = AnchorPresets.TopRight,
-                    Parent = area.ContainerControl,
-                    Enabled = !NotNullItems || size > 0,
-                };
-                addButton.Clicked += () =>
-                {
-                    if (IsSetBlocked)
-                        return;
 
-                    Resize(Count + 1);
+                var removeButton = panel.Button("-", "Remove last item");
-                };
+                removeButton.Button.Size = new Float2(16, 16);
-                var removeButton = new Button(addButton.Right + 2, addButton.Y, 16, 16)
+                removeButton.Button.Enabled = size > 0;
-                {
+                removeButton.Button.AnchorPreset = AnchorPresets.TopRight;
-                    Text = "-",
+                removeButton.Button.Clicked += () =>
-                    TooltipText = "Remove last item",
-                    AnchorPreset = AnchorPresets.TopRight,
-                    Parent = area.ContainerControl,
-                    Enabled = size > 0,
-                };
-                removeButton.Clicked += () =>
                 {
                     if (IsSetBlocked)
                         return;
 
                     Resize(Count - 1);
                 };
+
+                var addButton = panel.Button("+", "Add new item");
+                addButton.Button.Size = new Float2(16, 16);
+                addButton.Button.Enabled = !NotNullItems || size > 0;
+                addButton.Button.AnchorPreset = AnchorPresets.TopRight;
+                addButton.Button.Clicked += () =>
+                {
+                    if (IsSetBlocked)
+                        return;
+
+                    Resize(Count + 1);
+                };
             }
         }
 
+        /// <inheritdoc />
+        protected override void Deinitialize()
+        {
+            _size = null;
+            _sizeLabel = null;
+
+            base.Deinitialize();
+        }
+
         /// <summary>
         /// Rebuilds the parent layout if its collection.
         /// </summary>
@@ -268,7 +311,6 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             if (IsSetBlocked)
                 return;
-
             Resize(_size.IntValue.Value);
         }
 
@@ -283,11 +325,9 @@ namespace FlaxEditor.CustomEditors.Editors
                 return;
 
             var cloned = CloneValues();
-
             var tmp = cloned[dstIndex];
             cloned[dstIndex] = cloned[srcIndex];
             cloned[srcIndex] = tmp;
-
             SetValue(cloned);
         }
 
@@ -343,6 +383,17 @@ namespace FlaxEditor.CustomEditors.Editors
             if (HasDifferentValues || HasDifferentTypes)
                 return;
 
+            // Update reference/default value indicator
+            if (_sizeLabel != null)
+            {
+                var color = Color.Transparent;
+                if (Values.HasReferenceValue && Values.ReferenceValue is IList referenceValue && referenceValue.Count != Count)
+                    color = FlaxEngine.GUI.Style.Current.BackgroundSelected;
+                else if (Values.HasDefaultValue && Values.DefaultValue is IList defaultValue && defaultValue.Count != Count)
+                    color = Color.Yellow * 0.8f;
+                _sizeLabel.HighlightStripColor = color;
+            }
+
             // Check if collection has been resized (by UI or from external source)
             if (Count != _elementsCount)
             {
@@ -369,5 +420,232 @@ namespace FlaxEditor.CustomEditors.Editors
             }
             return base.OnDirty(editor, value, token);
         }
+
+        private class DragAreaControl : VerticalPanel
+        {
+            private DragItems _dragItems;
+            private DragActors _dragActors;
+            private DragHandlers _dragHandlers;
+            private AssetPickerValidator _pickerValidator;
+
+            public ScriptType ElementType
+            {
+                get => _pickerValidator?.AssetType ?? ScriptType.Null;
+                set => _pickerValidator = new AssetPickerValidator(value);
+            }
+
+            public CollectionEditor Editor { get; set; }
+
+            public string FileExtension
+            {
+                set => _pickerValidator.FileExtension = value;
+            }
+
+            /// <inheritdoc />
+            public override void Draw()
+            {
+                if (_dragHandlers is { HasValidDrag: true })
+                {
+                    var area = new Rectangle(Float2.Zero, Size);
+                    Render2D.FillRectangle(area, Color.Orange * 0.5f);
+                    Render2D.DrawRectangle(area, Color.Black);
+                }
+
+                base.Draw();
+            }
+
+            public override void OnDestroy()
+            {
+                _pickerValidator.OnDestroy();
+            }
+
+            private bool ValidateActors(ActorNode node)
+            {
+                return node.Actor.GetScript(ElementType.Type) || ElementType.Type.IsAssignableTo(typeof(Actor));
+            }
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragEnter(ref Float2 location, DragData data)
+            {
+                var result = base.OnDragEnter(ref location, data);
+                if (result != DragDropEffect.None)
+                    return result;
+
+                if (_dragHandlers == null)
+                {
+                    _dragItems = new DragItems(_pickerValidator.IsValid);
+                    _dragActors = new DragActors(ValidateActors);
+                    _dragHandlers = new DragHandlers
+                    {
+                        _dragActors,
+                        _dragItems
+                    };
+                }
+                return _dragHandlers.OnDragEnter(data);
+            }
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragMove(ref Float2 location, DragData data)
+            {
+                var result = base.OnDragMove(ref location, data);
+                if (result != DragDropEffect.None)
+                    return result;
+
+                return _dragHandlers.Effect;
+            }
+
+            /// <inheritdoc />
+            public override void OnDragLeave()
+            {
+                _dragHandlers.OnDragLeave();
+
+                base.OnDragLeave();
+            }
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragDrop(ref Float2 location, DragData data)
+            {
+                var result = base.OnDragDrop(ref location, data);
+                if (result != DragDropEffect.None)
+                {
+                    _dragHandlers.OnDragDrop(null);
+                    return result;
+                }
+
+                if (_dragHandlers.HasValidDrag)
+                {
+                    if (_dragItems.HasValidDrag)
+                    {
+                        var list = Editor.CloneValues();
+                        if (list == null)
+                        {
+                            if (Editor.Values.Type.IsArray)
+                            {
+                                list = TypeUtils.CreateArrayInstance(Editor.Values.Type.GetElementType(), 0);
+                            }
+                            else
+                            {
+                                list = Editor.Values.Type.CreateInstance() as IList;
+                            }
+                        }
+                        if (list.IsFixedSize)
+                        {
+                            var oldSize = list.Count;
+                            var newSize = list.Count + _dragItems.Objects.Count;
+                            var type = Editor.Values.Type.GetElementType();
+                            var array = TypeUtils.CreateArrayInstance(type, newSize);
+                            list.CopyTo(array, 0);
+
+                            for (var i = oldSize; i < newSize; i++)
+                            {
+                                var validator = new AssetPickerValidator
+                                {
+                                    FileExtension = _pickerValidator.FileExtension,
+                                    AssetType = _pickerValidator.AssetType,
+                                    SelectedItem = _dragItems.Objects[i - oldSize],
+                                };
+
+                                if (typeof(AssetItem).IsAssignableFrom(ElementType.Type))
+                                    array.SetValue(validator.SelectedItem, i);
+                                else if (ElementType.Type == typeof(Guid))
+                                    array.SetValue(validator.SelectedID, i);
+                                else if (ElementType.Type == typeof(SceneReference))
+                                    array.SetValue(new SceneReference(validator.SelectedID), i);
+                                else if (ElementType.Type == typeof(string))
+                                    array.SetValue(validator.SelectedPath, i);
+                                else
+                                    array.SetValue(validator.SelectedAsset, i);
+
+                                validator.OnDestroy();
+                            }
+                            Editor.SetValue(array);
+                        }
+                        else
+                        {
+                            foreach (var item in _dragItems.Objects)
+                            {
+                                var validator = new AssetPickerValidator
+                                {
+                                    FileExtension = _pickerValidator.FileExtension,
+                                    AssetType = _pickerValidator.AssetType,
+                                    SelectedItem = item,
+                                };
+
+                                if (typeof(AssetItem).IsAssignableFrom(ElementType.Type))
+                                    list.Add(validator.SelectedItem);
+                                else if (ElementType.Type == typeof(Guid))
+                                    list.Add(validator.SelectedID);
+                                else if (ElementType.Type == typeof(SceneReference))
+                                    list.Add(new SceneReference(validator.SelectedID));
+                                else if (ElementType.Type == typeof(string))
+                                    list.Add(validator.SelectedPath);
+                                else
+                                    list.Add(validator.SelectedAsset);
+
+                                validator.OnDestroy();
+                            }
+                            Editor.SetValue(list);
+                        }
+                    }
+                    else if (_dragActors.HasValidDrag)
+                    {
+                        var list = Editor.CloneValues();
+                        if (list == null)
+                        {
+                            if (Editor.Values.Type.IsArray)
+                            {
+                                list = TypeUtils.CreateArrayInstance(Editor.Values.Type.GetElementType(), 0);
+                            }
+                            else
+                            {
+                                list = Editor.Values.Type.CreateInstance() as IList;
+                            }
+                        }
+
+                        if (list.IsFixedSize)
+                        {
+                            var oldSize = list.Count;
+                            var newSize = list.Count + _dragActors.Objects.Count;
+                            var type = Editor.Values.Type.GetElementType();
+                            var array = TypeUtils.CreateArrayInstance(type, newSize);
+                            list.CopyTo(array, 0);
+
+                            for (var i = oldSize; i < newSize; i++)
+                            {
+                                var actor = _dragActors.Objects[i - oldSize].Actor;
+                                if (ElementType.Type.IsAssignableTo(typeof(Actor)))
+                                {
+                                    array.SetValue(actor, i);
+                                }
+                                else
+                                {
+                                    array.SetValue(actor.GetScript(ElementType.Type), i);
+                                }
+                            }
+                            Editor.SetValue(array);
+                        }
+                        else
+                        {
+                            foreach (var actorNode in _dragActors.Objects)
+                            {
+                                if (ElementType.Type.IsAssignableTo(typeof(Actor)))
+                                {
+                                    list.Add(actorNode.Actor);
+                                }
+                                else
+                                {
+                                    list.Add(actorNode.Actor.GetScript(ElementType.Type));
+                                }
+                            }
+                            Editor.SetValue(list);
+                        }
+                    }
+
+                    _dragHandlers.OnDragDrop(null);
+                }
+
+                return result;
+            }
+        }
     }
 }

Source/Editor/CustomEditors/Editors/CultureInfoEditor.cs

@@ -123,9 +123,9 @@ namespace FlaxEditor.CustomEditors.Editors
             {
                 if (tree.IsLayoutLocked)
                     return;
-                root.LockChildrenRecursive();
+                tree.LockChildrenRecursive();
                 Utilities.Utils.UpdateSearchPopupFilter(root, searchBox.Text);
-                root.UnlockChildrenRecursive();
+                tree.UnlockChildrenRecursive();
                 menu.PerformLayout();
             };
             root.ExpandAll(true);

Source/Editor/CustomEditors/Editors/GenericEditor.cs

@@ -26,7 +26,7 @@ namespace FlaxEditor.CustomEditors.Editors
         /// Describes object property/field information for custom editors pipeline.
         /// </summary>
         /// <seealso cref="System.IComparable" />
-        protected class ItemInfo : IComparable
+        public class ItemInfo : IComparable
         {
             private Options.GeneralOptions.MembersOrder _membersOrder;
 
@@ -247,8 +247,9 @@ namespace FlaxEditor.CustomEditors.Editors
         /// <param name="type">The type.</param>
         /// <param name="useProperties">True if use type properties.</param>
         /// <param name="useFields">True if use type fields.</param>
+        /// <param name="usePropertiesWithoutSetter">True if use type properties that have only getter method without setter method (aka read-only).</param>
         /// <returns>The items.</returns>
-        protected List<ItemInfo> GetItemsForType(ScriptType type, bool useProperties, bool useFields)
+        public static List<ItemInfo> GetItemsForType(ScriptType type, bool useProperties, bool useFields, bool usePropertiesWithoutSetter = false)
         {
             var items = new List<ItemInfo>();
 
@@ -264,7 +265,7 @@ namespace FlaxEditor.CustomEditors.Editors
                     var showInEditor = attributes.Any(x => x is ShowInEditorAttribute);
 
                     // Skip properties without getter or setter
-                    if (!p.HasGet || (!p.HasSet && !showInEditor))
+                    if (!p.HasGet || (!p.HasSet && !showInEditor && !usePropertiesWithoutSetter))
                         continue;
 
                     // Skip hidden fields, handle special attributes

Source/Editor/CustomEditors/Editors/IBrushEditor.cs

@@ -16,6 +16,7 @@ namespace FlaxEditor.CustomEditors.Editors
         /// <inheritdoc />
         protected override OptionType[] Options => new[]
         {
+            new OptionType("null", null),
             new OptionType("Texture", typeof(TextureBrush)),
             new OptionType("Sprite", typeof(SpriteBrush)),
             new OptionType("GPU Texture", typeof(GPUTextureBrush)),

Source/Editor/CustomEditors/Editors/InputEditor.cs

@@ -0,0 +1,146 @@
+// Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
+
+using System.Collections.Generic;
+using FlaxEditor.CustomEditors.GUI;
+using FlaxEditor.GUI;
+using FlaxEditor.GUI.ContextMenu;
+using FlaxEngine;
+
+namespace FlaxEditor.CustomEditors.Editors
+{
+    /// <summary>
+    /// Default implementation of the inspector used to edit input event properties.
+    /// </summary>
+    [CustomEditor(typeof(InputEvent)), DefaultEditor]
+    public class InputEventEditor : CustomEditor
+    {
+        private ComboBox _comboBox;
+
+        /// <inheritdoc />
+        public override DisplayStyle Style => DisplayStyle.Inline;
+
+        /// <inheritdoc />
+        public override void Initialize(LayoutElementsContainer layout)
+        {
+            LinkedLabel.SetupContextMenu += OnSetupContextMenu;
+            var comboBoxElement = layout.ComboBox();
+            _comboBox = comboBoxElement.ComboBox;
+            var names = new List<string>();
+            foreach (var mapping in Input.ActionMappings)
+            {
+                if (!names.Contains(mapping.Name))
+                    names.Add(mapping.Name);
+            }
+            _comboBox.Items = names;
+            if (Values[0] is InputEvent inputEvent && names.Contains(inputEvent.Name))
+                _comboBox.SelectedItem = inputEvent.Name;
+            _comboBox.SelectedIndexChanged += OnSelectedIndexChanged;
+        }
+
+        private void OnSetupContextMenu(PropertyNameLabel label, ContextMenu menu, CustomEditor linkededitor)
+        {
+            var button = menu.AddButton("Set to null");
+            button.Clicked += () => _comboBox.SelectedItem = null;
+        }
+
+        private void OnSelectedIndexChanged(ComboBox comboBox)
+        {
+            SetValue(comboBox.SelectedItem == null ? null : new InputEvent(comboBox.SelectedItem));
+        }
+
+        /// <inheritdoc />
+        public override void Refresh()
+        {
+            base.Refresh();
+
+            if (HasDifferentValues)
+            {
+            }
+            else
+            {
+                if (Values[0] is InputEvent inputEvent && _comboBox.Items.Contains(inputEvent.Name))
+                    _comboBox.SelectedItem = inputEvent.Name;
+                else
+                    _comboBox.SelectedItem = null;
+            }
+        }
+
+        /// <inheritdoc />
+        protected override void Deinitialize()
+        {
+            if (LinkedLabel != null)
+                LinkedLabel.SetupContextMenu -= OnSetupContextMenu;
+            if (_comboBox != null)
+                _comboBox.SelectedIndexChanged -= OnSelectedIndexChanged;
+            _comboBox = null;
+        }
+    }
+
+    /// <summary>
+    /// Default implementation of the inspector used to edit input axis properties.
+    /// </summary>
+    [CustomEditor(typeof(InputAxis)), DefaultEditor]
+    public class InputAxisEditor : CustomEditor
+    {
+        private ComboBox _comboBox;
+
+        /// <inheritdoc />
+        public override DisplayStyle Style => DisplayStyle.Inline;
+
+        /// <inheritdoc />
+        public override void Initialize(LayoutElementsContainer layout)
+        {
+            LinkedLabel.SetupContextMenu += OnSetupContextMenu;
+            var comboBoxElement = layout.ComboBox();
+            _comboBox = comboBoxElement.ComboBox;
+            var names = new List<string>();
+            foreach (var mapping in Input.AxisMappings)
+            {
+                if (!names.Contains(mapping.Name))
+                    names.Add(mapping.Name);
+            }
+            _comboBox.Items = names;
+            if (Values[0] is InputAxis inputAxis && names.Contains(inputAxis.Name))
+                _comboBox.SelectedItem = inputAxis.Name;
+            _comboBox.SelectedIndexChanged += OnSelectedIndexChanged;
+        }
+
+        private void OnSetupContextMenu(PropertyNameLabel label, ContextMenu menu, CustomEditor linkededitor)
+        {
+            var button = menu.AddButton("Set to null");
+            button.Clicked += () => _comboBox.SelectedItem = null;
+        }
+
+        private void OnSelectedIndexChanged(ComboBox comboBox)
+        {
+            SetValue(comboBox.SelectedItem == null ? null : new InputAxis(comboBox.SelectedItem));
+        }
+
+        /// <inheritdoc />
+        public override void Refresh()
+        {
+            base.Refresh();
+
+            if (HasDifferentValues)
+            {
+            }
+            else
+            {
+                if (Values[0] is InputAxis inputAxis && _comboBox.Items.Contains(inputAxis.Name))
+                    _comboBox.SelectedItem = inputAxis.Name;
+                else
+                    _comboBox.SelectedItem = null;
+            }
+        }
+
+        /// <inheritdoc />
+        protected override void Deinitialize()
+        {
+            if (LinkedLabel != null)
+                LinkedLabel.SetupContextMenu -= OnSetupContextMenu;
+            if (_comboBox != null)
+                _comboBox.SelectedIndexChanged -= OnSelectedIndexChanged;
+            _comboBox = null;
+        }
+    }
+}

Source/Editor/CustomEditors/Editors/ModelInstanceEntryEditor.cs

@@ -1,6 +1,8 @@
 // Copyright (c) 2012-2023 Wojciech Figat. All rights reserved.
 
 using FlaxEditor.CustomEditors.Elements;
+using FlaxEditor.CustomEditors.GUI;
+using FlaxEditor.Scripting;
 using FlaxEngine;
 
 namespace FlaxEditor.CustomEditors.Editors
@@ -13,6 +15,11 @@ namespace FlaxEditor.CustomEditors.Editors
     {
         private GroupElement _group;
         private bool _updateName;
+        private int _entryIndex;
+        private bool _isRefreshing;
+        private MaterialBase _material;
+        private ModelInstanceActor _modelInstance;
+        private AssetRefEditor _materialEditor;
 
         /// <inheritdoc />
         public override void Initialize(LayoutElementsContainer layout)
@@ -21,47 +28,128 @@ namespace FlaxEditor.CustomEditors.Editors
             var group = layout.Group("Entry");
             _group = group;
 
+            if (ParentEditor == null || HasDifferentTypes)
+                return;
+            var entry = (ModelInstanceEntry)Values[0];
+            var entryIndex = ParentEditor.ChildrenEditors.IndexOf(this);
+            var materialLabel = new PropertyNameLabel("Material");
+            materialLabel.TooltipText = "The mesh surface material used for the rendering.";
+            var parentEditorValues = ParentEditor.ParentEditor?.Values;
+            if (parentEditorValues?[0] is ModelInstanceActor modelInstance)
+            {
+                // TODO: store _modelInstance and _material in array for each selected model instance actor
+                _entryIndex = entryIndex;
+                _modelInstance = modelInstance;
+                var slots = modelInstance.MaterialSlots;
+                if (slots == null || entryIndex >= slots.Length)
+                    return;
+                if (entry.Material == slots[entryIndex].Material)
+                {
+                    // Ensure that entry with default material set is set back to null
+                    modelInstance.SetMaterial(entryIndex, null);
+                }
+                _material = modelInstance.GetMaterial(entryIndex);
+                var defaultValue = GPUDevice.Instance.DefaultMaterial;
+                if (slots[entryIndex].Material)
+                {
+                    // Use default value set on asset (eg. Model Asset)
+                    defaultValue = slots[entryIndex].Material;
+                }
+
+                // Create material picker
+                var materialValue = new CustomValueContainer(new ScriptType(typeof(MaterialBase)), _material, (instance, index) => _material, (instance, index, value) => _material = value as MaterialBase);
+                for (var i = 1; i < parentEditorValues.Count; i++)
+                    materialValue.Add(_material);
+                var materialEditor = (AssetRefEditor)_group.Property(materialLabel, materialValue);
+                materialEditor.Values.SetDefaultValue(defaultValue);
+                materialEditor.RefreshDefaultValue();
+                materialEditor.Picker.SelectedItemChanged += OnSelectedMaterialChanged;
+                _materialEditor = materialEditor;
+            }
+
             base.Initialize(group);
         }
 
+        private void OnSelectedMaterialChanged()
+        {
+            if (_isRefreshing)
+                return;
+            _isRefreshing = true;
+            var slots = _modelInstance.MaterialSlots;
+            var material = _materialEditor.Picker.Validator.SelectedAsset as MaterialBase;
+            var defaultMaterial = GPUDevice.Instance.DefaultMaterial;
+            var value = (ModelInstanceEntry)Values[0];
+            var prevMaterial = value.Material;
+            if (!material)
+            {
+                // Fallback to default material
+                _materialEditor.Picker.Validator.SelectedAsset = defaultMaterial;
+                value.Material = defaultMaterial;
+            }
+            else if (material == slots[_entryIndex].Material)
+            {
+                // Asset default material
+                value.Material = null;
+            }
+            else if (material == defaultMaterial && !slots[_entryIndex].Material)
+            {
+                // Default material while asset has no set as well
+                value.Material = null;
+            }
+            else
+            {
+                // Custom material
+                value.Material = material;
+            }
+            if (prevMaterial != value.Material)
+                SetValue(value);
+            _isRefreshing = false;
+        }
+
+        /// <inheritdoc />
+        protected override void SpawnProperty(LayoutElementsContainer itemLayout, ValueContainer itemValues, ItemInfo item)
+        {
+            // Skip material member as it is overridden
+            if (item.Info.Name == "Material" && _materialEditor != null)
+                return;
+            base.SpawnProperty(itemLayout, itemValues, item);
+        }
+
         /// <inheritdoc />
         public override void Refresh()
         {
+            // Update panel title to match material slot name
             if (_updateName &&
                 _group != null &&
                 ParentEditor?.ParentEditor != null &&
                 ParentEditor.ParentEditor.Values.Count > 0)
             {
                 var entryIndex = ParentEditor.ChildrenEditors.IndexOf(this);
-                if (ParentEditor.ParentEditor.Values[0] is StaticModel staticModel)
+                if (ParentEditor.ParentEditor.Values[0] is ModelInstanceActor modelInstance)
                 {
-                    var model = staticModel.Model;
+                    var slots = modelInstance.MaterialSlots;
-                    if (model && model.IsLoaded)
+                    if (slots != null && slots.Length > entryIndex)
                     {
-                        var slots = model.MaterialSlots;
+                        _updateName = false;
-                        if (slots != null && slots.Length > entryIndex)
+                        _group.Panel.HeaderText = "Entry " + slots[entryIndex].Name;
-                        {
-                            _group.Panel.HeaderText = "Entry " + slots[entryIndex].Name;
-                            _updateName = false;
-                        }
-                    }
-                }
-                else if (ParentEditor.ParentEditor.Values[0] is AnimatedModel animatedModel)
-                {
-                    var model = animatedModel.SkinnedModel;
-                    if (model && model.IsLoaded)
-                    {
-                        var slots = model.MaterialSlots;
-                        if (slots != null && slots.Length > entryIndex)
-                        {
-                            _group.Panel.HeaderText = "Entry " + slots[entryIndex].Name;
-                            _updateName = false;
-                        }
                     }
                 }
             }
 
+            // Refresh currently selected material
+            _material = _modelInstance.GetMaterial(_entryIndex);
+
             base.Refresh();
         }
+
+        /// <inheritdoc />
+        protected override void Deinitialize()
+        {
+            _material = null;
+            _modelInstance = null;
+            _materialEditor = null;
+
+            base.Deinitialize();
+        }
     }
 }

Source/Editor/CustomEditors/Editors/ObjectSwitcherEditor.cs

@@ -125,7 +125,7 @@ namespace FlaxEditor.CustomEditors.Editors
             }
 
             // Value
-            var values = new CustomValueContainer(type, (instance, index) => instance, (instance, index, value) => { });
+            var values = new CustomValueContainer(type, (instance, index) => instance);
             values.AddRange(Values);
             var editor = CustomEditorsUtil.CreateEditor(type);
             var style = editor.Style;
@@ -158,7 +158,8 @@ namespace FlaxEditor.CustomEditors.Editors
             if (comboBox.SelectedIndex != -1)
             {
                 var option = _options[comboBox.SelectedIndex];
-                value = option.Creator(option.Type);
+                if (option.Type != null)
+                    value = option.Creator(option.Type);
             }
             SetValue(value);
             RebuildLayoutOnRefresh();

Source/Editor/CustomEditors/Editors/TagEditor.cs

@@ -593,9 +593,9 @@ namespace FlaxEditor.CustomEditors.Editors
             {
                 if (tree.IsLayoutLocked)
                     return;
-                root.LockChildrenRecursive();
+                tree.LockChildrenRecursive();
                 Utilities.Utils.UpdateSearchPopupFilter(root, searchBox.Text);
-                root.UnlockChildrenRecursive();
+                tree.UnlockChildrenRecursive();
                 menu.PerformLayout();
             };
 
@@ -623,13 +623,18 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             _label = layout.ClickableLabel(GetText(out _)).CustomControl;
             _label.RightClick += ShowPicker;
+            var buttonText = "...";
             var button = new Button
             {
                 Size = new Float2(16.0f),
-                Text = "...",
+                Text = buttonText,
                 TooltipText = "Edit...",
                 Parent = _label,
             };
+            var textSize = FlaxEngine.GUI.Style.Current.FontMedium.MeasureText(buttonText);
+            if (textSize.Y > button.Width)
+                button.Width = textSize.Y + 2;
+
             button.SetAnchorPreset(AnchorPresets.MiddleRight, false, true);
             button.Clicked += ShowPicker;
         }
@@ -674,9 +679,9 @@ namespace FlaxEditor.CustomEditors.Editors
             }
             set
             {
-                if (Values[0] is Tag[])
+                if (Values[0] is Tag[] || Values.Type.Type == typeof(Tag[]))
                     SetValue(value);
-                if (Values[0] is List<Tag>)
+                else if (Values[0] is List<Tag> || Values.Type.Type == typeof(List<Tag>))
                     SetValue(new List<Tag>(value));
             }
         }

Source/Editor/CustomEditors/Editors/TypeEditor.cs

@@ -464,6 +464,11 @@ namespace FlaxEditor.CustomEditors.Editors
     /// </summary>
     public class TypeNameEditor : TypeEditorBase
     {
+        /// <summary>
+        /// Prevents spamming log if Value contains missing type to skip research in subsequential Refresh ticks.
+        /// </summary>
+        private string _lastTypeNameError;
+
         /// <inheritdoc />
         public override void Initialize(LayoutElementsContainer layout)
         {
@@ -484,8 +489,19 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             base.Refresh();
 
-            if (!HasDifferentValues && Values[0] is string asTypename)
+            if (!HasDifferentValues && Values[0] is string asTypename &&
-                _element.CustomControl.Value = TypeUtils.GetType(asTypename);
+                !string.Equals(asTypename, _lastTypeNameError, StringComparison.Ordinal))
+            {
+                try
+                {
+                    _element.CustomControl.Value = TypeUtils.GetType(asTypename);
+                }
+                finally
+                {
+                    if (_element.CustomControl.Value == null && asTypename.Length != 0)
+                        _lastTypeNameError = asTypename;
+                }
+            }
         }
     }
 }

Source/Editor/CustomEditors/Elements/DoubleValueElement.cs

@@ -22,7 +22,7 @@ namespace FlaxEditor.CustomEditors.Elements
         /// <summary>
         /// [Deprecated on 26.05.2022, expires on 26.05.2024]
         /// </summary>
-        [System.Obsolete("Deprecated in 1.4")]
+        [System.Obsolete("Deprecated in 1.4, use ValueBox instead")]
         public DoubleValueBox DoubleValue => ValueBox;
 
         /// <summary>

Source/Editor/CustomEditors/Elements/FloatValueElement.cs

@@ -22,7 +22,7 @@ namespace FlaxEditor.CustomEditors.Elements
         /// <summary>
         /// [Deprecated on 26.05.2022, expires on 26.05.2024]
         /// </summary>
-        [System.Obsolete("Deprecated in 1.4, ValueBox instead")]
+        [System.Obsolete("Deprecated in 1.4, use ValueBox instead")]
         public FloatValueBox FloatValue => ValueBox;
 
         /// <summary>

Source/Editor/CustomEditors/GUI/PropertiesList.cs

@@ -175,7 +175,7 @@ namespace FlaxEditor.CustomEditors.GUI
         {
             // Clear flag
             _mouseOverSplitter = false;
-            
+
             if (_cursorChanged)
             {
                 Cursor = CursorType.Default;

Source/Editor/CustomEditors/Values/CustomValueContainer.cs

@@ -38,15 +38,12 @@ namespace FlaxEditor.CustomEditors
         /// </summary>
         /// <param name="valueType">Type of the value.</param>
         /// <param name="getter">The value getter.</param>
-        /// <param name="setter">The value setter.</param>
+        /// <param name="setter">The value setter (can be null if value is read-only).</param>
         /// <param name="attributes">The custom type attributes used to override the value editor logic or appearance (eg. instance of <see cref="LimitAttribute"/>).</param>
-        public CustomValueContainer(ScriptType valueType, GetDelegate getter, SetDelegate setter, object[] attributes = null)
+        public CustomValueContainer(ScriptType valueType, GetDelegate getter, SetDelegate setter = null, object[] attributes = null)
         : base(ScriptMemberInfo.Null, valueType)
         {
-            if (getter == null || setter == null)
+            _getter = getter ?? throw new ArgumentNullException();
-                throw new ArgumentNullException();
-
-            _getter = getter;
             _setter = setter;
             _attributes = attributes;
         }
@@ -57,9 +54,9 @@ namespace FlaxEditor.CustomEditors
         /// <param name="valueType">Type of the value.</param>
         /// <param name="initialValue">The initial value.</param>
         /// <param name="getter">The value getter.</param>
-        /// <param name="setter">The value setter.</param>
+        /// <param name="setter">The value setter (can be null if value is read-only).</param>
         /// <param name="attributes">The custom type attributes used to override the value editor logic or appearance (eg. instance of <see cref="LimitAttribute"/>).</param>
-        public CustomValueContainer(ScriptType valueType, object initialValue, GetDelegate getter, SetDelegate setter, object[] attributes = null)
+        public CustomValueContainer(ScriptType valueType, object initialValue, GetDelegate getter, SetDelegate setter = null, object[] attributes = null)
         : this(valueType, getter, setter, attributes)
         {
             Add(initialValue);
@@ -76,7 +73,6 @@ namespace FlaxEditor.CustomEditors
         {
             if (instanceValues == null || instanceValues.Count != Count)
                 throw new ArgumentException();
-
             for (int i = 0; i < Count; i++)
             {
                 var v = instanceValues[i];
@@ -89,6 +85,8 @@ namespace FlaxEditor.CustomEditors
         {
             if (instanceValues == null || instanceValues.Count != Count)
                 throw new ArgumentException();
+            if (_setter == null)
+                return;
 
             for (int i = 0; i < Count; i++)
             {
@@ -105,6 +103,8 @@ namespace FlaxEditor.CustomEditors
                 throw new ArgumentException();
             if (values == null || values.Count != Count)
                 throw new ArgumentException();
+            if (_setter == null)
+                return;
 
             for (int i = 0; i < Count; i++)
             {
@@ -120,6 +120,8 @@ namespace FlaxEditor.CustomEditors
         {
             if (instanceValues == null || instanceValues.Count != Count)
                 throw new ArgumentException();
+            if (_setter == null)
+                return;
 
             for (int i = 0; i < Count; i++)
             {

Source/Editor/Editor.Build.cs

@@ -41,6 +41,11 @@ public class Editor : EditorModule
         options.ScriptingAPI.SystemReferences.Add("System.Xml.ReaderWriter");
         options.ScriptingAPI.SystemReferences.Add("System.Text.RegularExpressions");
         options.ScriptingAPI.SystemReferences.Add("System.ComponentModel.TypeConverter");
+        options.ScriptingAPI.SystemReferences.Add("System.IO.Compression.ZipFile");
+
+        // Enable optimizations for Editor, disable this for debugging the editor
+        if (options.Configuration == TargetConfiguration.Development)
+            options.ScriptingAPI.Optimization = true;
 
         options.PublicDependencies.Add("Engine");
         options.PrivateDependencies.Add("pugixml");
@@ -102,5 +107,7 @@ public class Editor : EditorModule
         files.Add(Path.Combine(FolderPath, "Cooker/GameCooker.h"));
         files.Add(Path.Combine(FolderPath, "Cooker/PlatformTools.h"));
         files.Add(Path.Combine(FolderPath, "Cooker/Steps/CookAssetsStep.h"));
+        files.Add(Path.Combine(FolderPath, "Utilities/ScreenUtilities.h"));
+        files.Add(Path.Combine(FolderPath, "Utilities/ViewportIconsRenderer.h"));
     }
 }