Merge remote-tracking branch 'origin/1.10' into sdl_platform_1.10

# Conflicts:
#	Source/Editor/SceneGraph/Actors/StaticModelNode.cs
#	Source/Engine/Graphics/Models/Mesh.cs
#	Source/Engine/Graphics/Models/ModelData.h

.github/workflows/build_linux.yml

@@ -16,7 +16,7 @@ jobs:
       uses: actions/checkout@v3
     - name: Install dependencies
       run: |
-        sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev build-essential gettext libtool libtool-bin libpulse-dev libasound2-dev libjack-dev portaudio19-dev
+        sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev build-essential gettext libtool libtool-bin libpulse-dev libasound2-dev libjack-dev portaudio19-dev libwayland-dev
     - name: Setup Vulkan
       uses: ./.github/actions/vulkan
     - name: Setup .NET
@@ -44,7 +44,7 @@ jobs:
       uses: actions/checkout@v3
     - name: Install dependencies
       run: |
-        sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev
+        sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev libwayland-dev
     - name: Setup Vulkan
       uses: ./.github/actions/vulkan
     - name: Setup .NET

.github/workflows/cd.yml

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

.github/workflows/tests.yml

@@ -28,7 +28,7 @@ jobs:
         git lfs pull
     - name: Install dependencies
       run: |
-        sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev build-essential gettext libtool libtool-bin libpulse-dev libasound2-dev libjack-dev portaudio19-dev
+        sudo apt-get install libx11-dev libxcursor-dev libxinerama-dev build-essential gettext libtool libtool-bin libpulse-dev libasound2-dev libjack-dev portaudio19-dev libwayland-dev
     - name: Build
       run: |
         ./GenerateProjectFiles.sh -vs2022 -log -verbose -printSDKs -dotnet=8
@@ -73,8 +73,11 @@ jobs:
         .\Development\Scripts\Windows\CallBuildTool.bat -build -log -dotnet=8 -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
+      shell: pwsh
       run: |
+        $ErrorActionPreference = "Stop"
         .\Binaries\Editor\Win64\Development\FlaxTests.exe
+        if(!$?) { Write-Host "Tests failed with exit code $LastExitCode" -ForegroundColor Red; Exit $LastExitCode }
         dotnet test -f net8.0 Binaries\Tests\Flax.Build.Tests.dll
         xcopy /y Binaries\Editor\Win64\Development\FlaxEngine.CSharp.dll Binaries\Tests
         xcopy /y Binaries\Editor\Win64\Development\FlaxEngine.CSharp.runtimeconfig.json Binaries\Tests

Content/Editor/MaterialTemplates/Decal.shader

@@ -83,6 +83,12 @@ float3 GetObjectSize(MaterialInput input)
 	return float3(1, 1, 1);
 }
 
+// Gets the current object scale (supports instancing)
+float3 GetObjectScale(MaterialInput input)
+{
+	return float3(1, 1, 1);
+}
+
 // Get the current object random value supports instancing)
 float GetPerInstanceRandom(MaterialInput input)
 {

Content/Editor/MaterialTemplates/Deformable.shader

@@ -207,6 +207,20 @@ float3 GetObjectSize(MaterialInput input)
 	return GeometrySize * float3(world._m00, world._m11, world._m22);
 }
 
+// Gets the current object scale (supports instancing)
+float3 GetObjectScale(MaterialInput input)
+{
+    float4x4 world = WorldMatrix;
+
+    // Extract scale from the world matrix
+    float3 scale;
+    scale.x = length(float3(world._11, world._12, world._13));
+    scale.y = length(float3(world._21, world._22, world._23));
+    scale.z = length(float3(world._31, world._32, world._33));
+
+    return scale;
+}
+
 // Get the current object random value
 float GetPerInstanceRandom(MaterialInput input)
 {
@@ -297,7 +311,7 @@ VertexOutput VS_SplineModel(ModelInput input)
 	output.Position = mul(float4(output.Geometry.WorldPosition, 1), ViewProjectionMatrix);
 
 	// Pass vertex attributes
-	output.Geometry.TexCoord = input.TexCoord;
+	output.Geometry.TexCoord = input.TexCoord0;
 #if USE_VERTEX_COLOR
 	output.Geometry.VertexColor = input.Color;
 #endif

Content/Editor/MaterialTemplates/GPUParticles.shader

@@ -140,7 +140,7 @@ void SetParticleVec4(uint particleIndex, int offset, float4 value)
 bool AddParticle(out uint dstIndex)
 {
 	// Acquire the particle index in the destination buffer
-	DstParticlesData.InterlockedAdd(ParticleCounterOffset, 1, dstIndex);
+	DstParticlesData.InterlockedAdd(ParticleCounterOffset, 1u, dstIndex);
 	
 	// Prevent overflow
 	return dstIndex >= PARTICLE_CAPACITY;

Content/Editor/MaterialTemplates/GUI.shader

@@ -163,6 +163,12 @@ float3 GetObjectSize(MaterialInput input)
 	return float3(1, 1, 1);
 }
 
+// Gets the current object scale (supports instancing)
+float3 GetObjectScale(MaterialInput input)
+{
+	return float3(1, 1, 1);
+}
+
 // Get the current object random value supports instancing)
 float GetPerInstanceRandom(MaterialInput input)
 {

Content/Editor/MaterialTemplates/Particle.shader

@@ -299,24 +299,22 @@ half3x3 CalcTangentToLocal(ModelInput input)
 	float3 normal = input.Normal.xyz * 2.0 - 1.0;
 	float3 tangent = input.Tangent.xyz * 2.0 - 1.0;
 	float3 bitangent = cross(normal, tangent) * bitangentSign;
-	return float3x3(tangent, bitangent, normal);
+	return (half3x3)float3x3(tangent, bitangent, normal);
 }
 
 half3x3 CalcTangentToWorld(in float4x4 world, in half3x3 tangentToLocal)
 {
-	half3x3 localToWorld = RemoveScaleFromLocalToWorld((float3x3)world);
+	half3x3 localToWorld = (half3x3)RemoveScaleFromLocalToWorld((float3x3)world);
 	return mul(tangentToLocal, localToWorld); 
 }
 
-float3 GetParticlePosition(uint ParticleIndex)
+float3 GetParticlePosition(uint particleIndex)
 {
-	return TransformParticlePosition(GetParticleVec3(ParticleIndex, PositionOffset));
+	return TransformParticlePosition(GetParticleVec3(particleIndex, PositionOffset));
 }
 
 // Vertex Shader function for Sprite Rendering
 META_VS(true, FEATURE_LEVEL_ES2)
-META_VS_IN_ELEMENT(POSITION, 0, R32G32_FLOAT, 0, 0,     PER_VERTEX, 0, true)
-META_VS_IN_ELEMENT(TEXCOORD, 0, R32G32_FLOAT, 0, ALIGN, PER_VERTEX, 0, true)
 VertexOutput VS_Sprite(SpriteInput input, uint particleIndex : SV_InstanceID)
 {
 	VertexOutput output;
@@ -407,7 +405,7 @@ VertexOutput VS_Sprite(SpriteInput input, uint particleIndex : SV_InstanceID)
 	output.InstanceParams = PerInstanceRandom;
 
 	// Calculate tanget space to world space transformation matrix for unit vectors
-	half3x3 tangentToLocal = float3x3(axisX, axisY, axisZ);
+	half3x3 tangentToLocal = half3x3(axisX, axisY, axisZ);
 	half3x3 tangentToWorld = CalcTangentToWorld(world, tangentToLocal);
 	output.TBN = tangentToWorld;
 
@@ -516,7 +514,7 @@ VertexOutput VS_Model(ModelInput input, uint particleIndex : SV_InstanceID)
 	output.Position = mul(float4(output.WorldPosition, 1), ViewProjectionMatrix);
 
 	// Pass vertex attributes
-	output.TexCoord = input.TexCoord;
+	output.TexCoord = input.TexCoord0;
 	output.ParticleIndex = particleIndex;
 #if USE_VERTEX_COLOR
 	output.VertexColor = input.Color;
@@ -612,7 +610,7 @@ VertexOutput VS_Ribbon(RibbonInput input, uint vertexIndex : SV_VertexID)
 	{
 		output.TexCoord.x = (float)input.Order / (float)RibbonSegmentCount;
 	}
-	output.TexCoord.y = (vertexIndex + 1) & 0x1;
+	output.TexCoord.y = (float)((vertexIndex + 1) & 0x1);
 	output.TexCoord = output.TexCoord * RibbonUVScale + RibbonUVOffset;
 
 	// Compute world space vertex position
@@ -631,7 +629,7 @@ VertexOutput VS_Ribbon(RibbonInput input, uint vertexIndex : SV_VertexID)
 	output.InstanceParams = PerInstanceRandom;
 
 	// Calculate tanget space to world space transformation matrix for unit vectors
-	half3x3 tangentToLocal = float3x3(tangentRight, tangentUp, cross(tangentRight, tangentUp));
+	half3x3 tangentToLocal = half3x3(tangentRight, tangentUp, cross(tangentRight, tangentUp));
 	half3x3 tangentToWorld = CalcTangentToWorld(world, tangentToLocal);
 	output.TBN = tangentToWorld;
 

Content/Editor/MaterialTemplates/Surface.shader

@@ -2,6 +2,7 @@
 // Version: @0
 
 #define MATERIAL 1
+#define MATERIAL_TEXCOORDS 4
 #define USE_PER_VIEW_CONSTANTS 1
 #define USE_PER_DRAW_CONSTANTS 1
 @3
@@ -24,21 +25,29 @@ Buffer<float4> BoneMatrices : register(t1);
 Buffer<float4> PrevBoneMatrices : register(t2);
 #endif
 #endif
+
 // Geometry data passed though the graphics rendering stages up to the pixel shader
 struct GeometryData
 {
 	float3 WorldPosition : TEXCOORD0;
-	float2 TexCoord : TEXCOORD1;
-	float2 LightmapUV : TEXCOORD2;
+	float4 TexCoords01 : TEXCOORD1;
+	float4 TexCoords23 : TEXCOORD2;
+	float2 LightmapUV : TEXCOORD3;
 #if USE_VERTEX_COLOR
 	half4 VertexColor : COLOR;
 #endif
-	float3 WorldNormal : TEXCOORD3;
-	float4 WorldTangent : TEXCOORD4;
+	float3 WorldNormal : TEXCOORD4;
+	float4 WorldTangent : TEXCOORD5;
 	float3 PrevWorldPosition : TEXCOORD7;
 	nointerpolation uint ObjectIndex : TEXCOORD8;
 };
 
+float3 DecodeNormal(float4 normalMap)
+{
+    float2 xy = normalMap.rg * 2.0 - 1.0;
+    return float3(xy, sqrt(1.0 - saturate(dot(xy, xy))));
+}
+
 // Interpolants passed from the vertex shader
 struct VertexOutput
 {
@@ -68,7 +77,7 @@ struct MaterialInput
 {
 	float3 WorldPosition;
 	float TwoSidedSign;
-	float2 TexCoord;
+	float2 TexCoords[MATERIAL_TEXCOORDS];
 #if USE_LIGHTMAP
 	float2 LightmapUV;
 #endif
@@ -86,12 +95,18 @@ struct MaterialInput
 #endif
 };
 
+// Map access to the main texure coordinate channel as UV0
+#define TexCoord TexCoords[0]
+
 // Extracts geometry data to the material input
 MaterialInput GetGeometryMaterialInput(GeometryData geometry)
 {
 	MaterialInput output = (MaterialInput)0;
 	output.WorldPosition = geometry.WorldPosition;
-	output.TexCoord = geometry.TexCoord;
+	output.TexCoords[0] = geometry.TexCoords01.xy;
+	output.TexCoords[1] = geometry.TexCoords01.zw;
+	output.TexCoords[2] = geometry.TexCoords23.xy;
+	output.TexCoords[3] = geometry.TexCoords23.zw;
 #if USE_LIGHTMAP
 	output.LightmapUV = geometry.LightmapUV;
 #endif
@@ -126,8 +141,8 @@ MaterialInput GetGeometryMaterialInput(GeometryData geometry)
 GeometryData InterpolateGeometry(GeometryData p0, float w0, GeometryData p1, float w1, GeometryData p2, float w2)
 {
 	GeometryData output = (GeometryData)0;
-	output.TexCoord = p0.TexCoord * w0 + p1.TexCoord * w1 + p2.TexCoord * w2;
-	output.LightmapUV = p0.LightmapUV * w0 + p1.LightmapUV * w1 + p2.LightmapUV * w2;
+	output.TexCoords01 = p0.TexCoords01 * w0 + p1.TexCoords01 * w1 + p2.TexCoords01 * w2;
+	output.TexCoords23 = p0.TexCoords23 * w0 + p1.TexCoords23 * w1 + p2.TexCoords23 * w2;
 #if USE_VERTEX_COLOR
 	output.VertexColor = p0.VertexColor * w0 + p1.VertexColor * w1 + p2.VertexColor * w2;
 #endif
@@ -223,6 +238,24 @@ float3 GetObjectSize(MaterialInput input)
 	return input.Object.GeometrySize * float3(world._m00, world._m11, world._m22);
 }
 
+// Gets the current object scale (supports instancing)
+float3 GetObjectScale(MaterialInput input)
+{
+    float4x4 world = input.Object.WorldMatrix;
+
+    // Get the squares of the scale factors
+    float scaleXSquared = dot(world[0].xyz, world[0].xyz);
+    float scaleYSquared = dot(world[1].xyz, world[1].xyz);
+    float scaleZSquared = dot(world[2].xyz, world[2].xyz);
+
+    // Take square root to get actual scales
+    return float3(
+        sqrt(scaleXSquared),
+        sqrt(scaleYSquared),
+        sqrt(scaleZSquared)
+    );
+}
+
 // Get the current object random value (supports instancing)
 float GetPerInstanceRandom(MaterialInput input)
 {
@@ -312,14 +345,15 @@ VertexOutput VS(ModelInput input)
 	output.Position = mul(float4(output.Geometry.WorldPosition, 1), ViewProjectionMatrix);
 
 	// Pass vertex attributes
-	output.Geometry.TexCoord = input.TexCoord;
+	output.Geometry.TexCoords01 = float4(input.TexCoord0, input.TexCoord1);
+	output.Geometry.TexCoords23 = float4(input.TexCoord2, input.TexCoord3);
 #if USE_VERTEX_COLOR
 	output.Geometry.VertexColor = input.Color;
 #endif
 #if CAN_USE_LIGHTMAP
 	output.Geometry.LightmapUV = input.LightmapUV * object.LightmapArea.zw + object.LightmapArea.xy;
 #else
-	output.Geometry.LightmapUV = input.LightmapUV;
+	output.Geometry.LightmapUV = float2(0, 0);
 #endif
 
 	// Calculate tanget space to world space transformation matrix for unit vectors
@@ -459,7 +493,7 @@ META_VS_IN_ELEMENT(TEXCOORD,     0, R16G16_FLOAT,      0, ALIGN, PER_VERTEX, 0,
 META_VS_IN_ELEMENT(NORMAL,       0, R10G10B10A2_UNORM, 0, ALIGN, PER_VERTEX, 0, true)
 META_VS_IN_ELEMENT(TANGENT,      0, R10G10B10A2_UNORM, 0, ALIGN, PER_VERTEX, 0, true)
 META_VS_IN_ELEMENT(BLENDINDICES, 0, R8G8B8A8_UINT,     0, ALIGN, PER_VERTEX, 0, true)
-META_VS_IN_ELEMENT(BLENDWEIGHT,  0, R16G16B16A16_FLOAT,0, ALIGN, PER_VERTEX, 0, true)
+META_VS_IN_ELEMENT(BLENDWEIGHTS, 0, R16G16B16A16_FLOAT,0, ALIGN, PER_VERTEX, 0, true)
 VertexOutput VS_Skinned(ModelInput_Skinned input)
 {
 	VertexOutput output;
@@ -486,9 +520,10 @@ VertexOutput VS_Skinned(ModelInput_Skinned input)
 	output.Position = mul(float4(output.Geometry.WorldPosition, 1), ViewProjectionMatrix);
 
 	// Pass vertex attributes
-	output.Geometry.TexCoord = input.TexCoord;
+	output.Geometry.TexCoords01 = float4(input.TexCoord0, input.TexCoord1);
+	output.Geometry.TexCoords23 = float4(input.TexCoord2, input.TexCoord3);
 #if USE_VERTEX_COLOR
-	output.Geometry.VertexColor = float4(0, 0, 0, 1);
+	output.Geometry.VertexColor = input.Color;
 #endif
 	output.Geometry.LightmapUV = float2(0, 0);
 

Content/Editor/MaterialTemplates/Terrain.shader

@@ -236,6 +236,12 @@ float3 GetObjectSize(MaterialInput input)
 	return float3(1, 1, 1);
 }
 
+// Gets the current object scale (supports instancing)
+float3 GetObjectScale(MaterialInput input)
+{
+	return float3(1, 1, 1);
+}
+
 // Get the current object random value
 float GetPerInstanceRandom(MaterialInput input)
 {
@@ -319,8 +325,6 @@ struct TerrainVertexInput
 
 // Vertex Shader function for terrain rendering
 META_VS(true, FEATURE_LEVEL_ES2)
-META_VS_IN_ELEMENT(TEXCOORD, 0, R32G32_FLOAT,   0, ALIGN, PER_VERTEX, 0, true)
-META_VS_IN_ELEMENT(TEXCOORD, 1, R8G8B8A8_UNORM, 0, ALIGN, PER_VERTEX, 0, true)
 VertexOutput VS(TerrainVertexInput input)
 {
 	VertexOutput output;

Content/Editor/Scripting/GamePluginTemplate.cs

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

Flax.flaxproj

@@ -2,9 +2,9 @@
   "Name": "Flax",
   "Version": {
     "Major": 1,
-    "Minor": 9,
+    "Minor": 10,
     "Revision": 0,
-    "Build": 6606
+    "Build": 6702
   },
   "Company": "Flax",
   "Copyright": "Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.",
@@ -13,6 +13,7 @@
   "Configuration": {
     "UseCSharp": true,
     "UseLargeWorlds": false,
-    "UseDotNet": true
+    "UseDotNet": true,
+    "UseSDL": true
   }
 }

Flax.sln.DotSettings

@@ -237,6 +237,7 @@
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002ECSharpPlaceAttributeOnSameLineMigration/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateBlankLinesAroundFieldToBlankLinesAroundProperty/@EntryIndexedValue">True</s:Boolean>
 	<s:Boolean x:Key="/Default/Environment/SettingsMigration/IsMigratorApplied/=JetBrains_002EReSharper_002EPsi_002ECSharp_002ECodeStyle_002ESettingsUpgrade_002EMigrateThisQualifierSettings/@EntryIndexedValue">True</s:Boolean>
+	<s:Boolean x:Key="/Default/GrammarAndSpelling/GrammarChecking/Exceptions/=Try_0020to_0020scripting/@EntryIndexedValue">True</s:Boolean>
 	<s:String x:Key="/Default/GrammarAndSpelling/GrammarChecking/RulesStates/=LanguageTool_002EEN_002EE_005FG/@EntryIndexedValue">DisabledByUser</s:String>
 	<s:Boolean x:Key="/Default/PatternsAndTemplates/Todo/TodoPatterns/=EEA05B0ED8200E4BA9D2D3F1052EBFFD/@KeyIndexDefined">True</s:Boolean>
 	<s:String x:Key="/Default/PatternsAndTemplates/Todo/TodoPatterns/=EEA05B0ED8200E4BA9D2D3F1052EBFFD/Color/@EntryValue">Blue</s:String>

README.md

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

Source/Editor/Content/Items/ContentItem.cs

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

Source/Editor/Content/Items/CppScriptItem.cs

@@ -20,7 +20,7 @@ namespace FlaxEditor.Content
         }
 
         /// <inheritdoc />
-        public override string TypeDescription => Path.EndsWith(".h") ? "C++ Header File" : "C++ Source Code";
+        public override string TypeDescription => Path.EndsWith(".h") || Path.EndsWith(".hpp") ? "C++ Header File" : "C++ Source Code";
 
         /// <inheritdoc />
         public override SpriteHandle DefaultThumbnail => Editor.Instance.Icons.CPPScript128;

Source/Editor/Content/Proxy/CSharpProxy.cs

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

Source/Editor/Content/Proxy/JsonAssetProxy.cs

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

Source/Editor/Content/Thumbnails/ThumbnailsModule.cs

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

Source/Editor/Cooker/GameCooker.cpp

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

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

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

Source/Editor/Cooker/Platform/Windows/WindowsPlatformTools.cpp

@@ -8,6 +8,7 @@
 #include "Engine/Core/Math/Color32.h"
 #include "Engine/Core/Config/GameSettings.h"
 #include "Editor/Utilities/EditorUtilities.h"
+#include "Engine/Graphics/PixelFormatSampler.h"
 #include "Engine/Graphics/Textures/TextureData.h"
 #include "Engine/Tools/TextureTool/TextureTool.h"
 #include "Engine/Content/Content.h"
@@ -240,7 +241,7 @@ void UpdateIconData(uint8* iconData, const TextureData* icon)
     const TextureMipData* srcPixels = icon->GetData(0, srcPixelsMip);
     const Color32* srcPixelsData = (Color32*)srcPixels->Data.Get();
     const Int2 srcPixelsSize(Math::Max(1, icon->Width >> srcPixelsMip), Math::Max(1, icon->Height >> srcPixelsMip));
-    const auto sampler = TextureTool::GetSampler(icon->Format);
+    const auto sampler = PixelFormatSampler::Get(icon->Format);
     ASSERT_LOW_LAYER(sampler);
 
     // Write colors
@@ -252,7 +253,7 @@ void UpdateIconData(uint8* iconData, const TextureData* icon)
         for (uint32 x = 0; x < width; x++)
         {
             float u = (float)x / width;
-            const Color c = TextureTool::SampleLinear(sampler, Float2(u, v), srcPixelsData, srcPixelsSize, srcPixels->RowPitch);
+            const Color c = sampler->SampleLinear(srcPixelsData, Float2(u, v), srcPixelsSize, srcPixels->RowPitch);
             colorData[idx++] = Color32(c).GetAsBGRA();
         }
     }
@@ -271,7 +272,7 @@ void UpdateIconData(uint8* iconData, const TextureData* icon)
             {
                 uint32 x = packedX * 8 + pixelIdx;
                 float u = (float)x / width;
-                const Color c = TextureTool::SampleLinear(sampler, Float2(u, v), srcPixelsData, srcPixelsSize, srcPixels->RowPitch);
+                const Color c = sampler->SampleLinear(srcPixelsData, Float2(u, v), srcPixelsSize, srcPixels->RowPitch);
                 if (c.A < 0.25f)
                     mask |= 1 << (7 - pixelIdx);
             }
@@ -322,7 +323,7 @@ bool UpdateExeIcon(const String& path, const TextureData& icon)
     const TextureData* iconRGBA8 = &icon;
     TextureData tmpData1;
     //if (icon.Format != PixelFormat::R8G8B8A8_UNorm)
-    if (TextureTool::GetSampler(icon.Format) == nullptr)
+    if (PixelFormatSampler::Get(icon.Format) == nullptr)
     {
         if (TextureTool::Convert(tmpData1, *iconRGBA8, PixelFormat::R8G8B8A8_UNorm))
         {

Source/Editor/Cooker/Steps/CookAssetsStep.cpp

@@ -137,10 +137,7 @@ void CookAssetsStep::CacheData::Load(CookingData& data)
     if (!FileSystem::DirectoryExists(CacheFolder))
         FileSystem::CreateDirectory(CacheFolder);
     if (!FileSystem::FileExists(HeaderFilePath))
-    {
-        LOG(Warning, "Missing incremental build cooking assets cache.");
         return;
-    }
 
     auto file = FileReadStream::Open(HeaderFilePath);
     if (file == nullptr)
@@ -158,7 +155,7 @@ void CookAssetsStep::CacheData::Load(CookingData& data)
 
     LOG(Info, "Loading incremental build cooking cache (entries count: {0})", entriesCount);
     file->ReadBytes(&Settings, sizeof(Settings));
-    Entries.EnsureCapacity(Math::RoundUpToPowerOf2(static_cast<int32>(entriesCount * 3.0f)));
+    Entries.EnsureCapacity(entriesCount);
 
     Array<Pair<String, DateTime>> fileDependencies;
     for (int32 i = 0; i < entriesCount; i++)
@@ -166,7 +163,7 @@ void CookAssetsStep::CacheData::Load(CookingData& data)
         Guid id;
         file->Read(id);
         String typeName;
-        file->ReadString(&typeName);
+        file->Read(typeName);
         DateTime fileModified;
         file->Read(fileModified);
         int32 fileDependenciesCount;
@@ -176,7 +173,7 @@ void CookAssetsStep::CacheData::Load(CookingData& data)
         for (int32 j = 0; j < fileDependenciesCount; j++)
         {
             Pair<String, DateTime>& f = fileDependencies[j];
-            file->ReadString(&f.First, 10);
+            file->Read(f.First, 10);
             file->Read(f.Second);
         }
 
@@ -311,9 +308,9 @@ void CookAssetsStep::CacheData::Save(CookingData& data)
     {
         auto& e = i->Value;
         file->Write(e.ID);
-        file->WriteString(e.TypeName);
+        file->Write(e.TypeName);
         file->Write(e.FileModified);
-        file->WriteInt32(e.FileDependencies.Count());
+        file->Write(e.FileDependencies.Count());
         for (auto& f : e.FileDependencies)
         {
             file->Write(f.First, 10);
@@ -365,17 +362,27 @@ bool CookAssetsStep::ProcessDefaultAsset(AssetCookData& options)
 
 bool CookAssetsStep::Process(CookingData& data, CacheData& cache, Asset* asset)
 {
-    // Validate asset
+    PROFILE_CPU_ASSET(asset);
     if (asset->IsVirtual())
     {
         // Virtual assets are not included into the build
         return false;
     }
+    const bool wasLoaded = asset->IsLoaded();
     if (asset->WaitForLoaded())
     {
         LOG(Error, "Failed to load asset \'{0}\'", asset->ToString());
         return true;
     }
+    if (!wasLoaded)
+    {
+        // HACK: give some time to resave any old assets in Asset::onLoad after it's loaded
+        // This assumes that if Load Thread enters Asset::Save then it will get asset lock and hold it until asset is saved
+        // So we can take the same lock to wait for save end but first we need to wait for it to get that lock
+        // (in future try to handle it in a better way)
+        Platform::Sleep(5);
+    }
+    ScopeLock lock(asset->Locker);
 
     // Switch based on an asset type
     const auto asBinaryAsset = dynamic_cast<BinaryAsset*>(asset);
@@ -793,7 +800,10 @@ bool CookAssetsStep::Process(CookingData& data, CacheData& cache, BinaryAsset* a
     // Prepare asset data
     AssetInitData initData;
     if (asset->Storage->LoadAssetHeader(asset->GetID(), initData))
+    {
+        LOG(Warning, "Failed to load asset {} header from storage '{}'", asset->GetID(), asset->Storage->GetPath());
         return true;
+    }
     initData.Header.UnlinkChunks();
     initData.Metadata.Release();
     for (auto& e : initData.Dependencies)
@@ -1165,7 +1175,7 @@ bool CookAssetsStep::Perform(CookingData& data)
         assetRef = Content::LoadAsync<Asset>(assetId);
         if (assetRef == nullptr)
         {
-            data.Error(TEXT("Failed to load asset included in build."));
+            LOG(Error, "Failed to load asset {} included in build", assetId);
             return true;
         }
         e.Info.TypeName = assetRef->GetTypeName();
@@ -1173,6 +1183,7 @@ bool CookAssetsStep::Perform(CookingData& data)
         // Cook asset
         if (Process(data, cache, assetRef.Get()))
         {
+            LOG(Error, "Failed to process asset {}", assetRef->ToString());
             cache.Save(data);
             return true;
         }
@@ -1205,10 +1216,17 @@ bool CookAssetsStep::Perform(CookingData& data)
         // Copy file
         if (!FileSystem::FileExists(cookedPath) || FileSystem::GetFileLastEditTime(cookedPath) >= FileSystem::GetFileLastEditTime(filePath))
         {
-            if (FileSystem::CreateDirectory(StringUtils::GetDirectoryName(cookedPath)))
+            const String cookedFolder = StringUtils::GetDirectoryName(cookedPath);
+            if (FileSystem::CreateDirectory(cookedFolder))
+            {
+                LOG(Error, "Failed to create directory '{}'", cookedFolder);
                 return true;
+            }
             if (FileSystem::CopyFile(cookedPath, filePath))
+            {
+                LOG(Error, "Failed to copy file from '{}' to '{}'", filePath, cookedPath);
                 return true;
+            }
         }
 
         // Count stats of file extension
@@ -1249,7 +1267,7 @@ bool CookAssetsStep::Perform(CookingData& data)
         *(int32*)(bytes.Get() + 804) = contentKey;
         *(Guid*)(bytes.Get() + 808) = gameSettings->SplashScreen;
         Encryption::EncryptBytes(bytes.Get(), bytes.Count());
-        stream->WriteArray(bytes);
+        stream->Write(bytes);
 
         Delete(stream);
     }

Source/Editor/Cooker/Steps/DeployDataStep.cpp

@@ -213,11 +213,59 @@ bool DeployDataStep::Perform(CookingData& data)
                 }
                 FileSystem::NormalizePath(srcDotnet);
                 LOG(Info, "Using .NET Runtime {} at {}", TEXT("Host"), srcDotnet);
+                const bool srcDotnetFromEngine = srcDotnet.Contains(TEXT("Source/Platforms"));
+                String packFolder = srcDotnet / TEXT("../../../");
+
+                // Get .NET runtime version
+                String version;
+                {
+                    // Detect from path provided by build tool
+                    Array<String> pathParts;
+                    srcDotnet.Split('/', pathParts);
+                    for (int32 i = 1; i < pathParts.Count(); i++)
+                    {
+                        if (pathParts[i] == TEXT("runtimes"))
+                        {
+                            Array<String> versionParts;
+                            pathParts[i - 1].Split('.', versionParts);
+                            if (!versionParts.IsEmpty())
+                            {
+                                const String majorVersion = versionParts[0].TrimTrailing();
+                                int32 versionNum;
+                                StringUtils::Parse(*majorVersion, majorVersion.Length(), &versionNum);
+                                if (Math::IsInRange(versionNum, GAME_BUILD_DOTNET_RUNTIME_MIN_VER, GAME_BUILD_DOTNET_RUNTIME_MAX_VER)) // Check for major part
+                                    version = majorVersion;
+                            }
+                        }
+                    }
+                    if (version.IsEmpty())
+                    {
+                        if (srcDotnetFromEngine)
+                        {
+                            // Detect version from runtime files inside Engine Platform folder
+                            for (int32 i = GAME_BUILD_DOTNET_RUNTIME_MAX_VER; i >= GAME_BUILD_DOTNET_RUNTIME_MIN_VER; i--)
+                            {
+                                // Check runtime files inside Engine Platform folder
+                                String testPath1 = srcDotnet / String::Format(TEXT("lib/net{}.0"), i);
+                                String testPath2 = packFolder / String::Format(TEXT("Dotnet/lib/net{}.0"), i);
+                                if ((FileSystem::DirectoryExists(testPath1) && FileSystem::GetDirectorySize(testPath1) > 0) ||
+                                    (FileSystem::DirectoryExists(testPath2) && FileSystem::GetDirectorySize(testPath2) > 0))
+                                {
+                                    version = StringUtils::ToString(i);
+                                    break;
+                                }
+                            }
+                        }
+                        if (version.IsEmpty())
+                        {
+                            data.Error(TEXT("Failed to find supported .NET version for the current host platform."));
+                            return true;
+                        }
+                    }
+                }
 
                 // Deploy runtime files
                 const Char* corlibPrivateName = TEXT("System.Private.CoreLib.dll");
-                const bool srcDotnetFromEngine = srcDotnet.Contains(TEXT("Source/Platforms"));
-                String packFolder = srcDotnet / TEXT("../../../");
                 String dstDotnetLibs = dstDotnet, srcDotnetLibs = srcDotnet;
                 StringUtils::PathRemoveRelativeParts(packFolder);
                 if (usAOT)
@@ -226,14 +274,14 @@ bool DeployDataStep::Perform(CookingData& data)
                     {
                         // AOT runtime files inside Engine Platform folder
                         packFolder /= TEXT("Dotnet");
-                        dstDotnetLibs /= TEXT("lib/net8.0");
-                        srcDotnetLibs = packFolder / TEXT("lib/net8.0");
+                        dstDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
+                        srcDotnetLibs = packFolder / String::Format(TEXT("lib/net{}.0"), version);
                     }
                     else
                     {
                         // Runtime files inside Dotnet SDK folder but placed for AOT
-                        dstDotnetLibs /= TEXT("lib/net8.0");
-                        srcDotnetLibs /= TEXT("../lib/net8.0");
+                        dstDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
+                        srcDotnetLibs /= String::Format(TEXT("../lib/net{}.0"), version);
                     }
                 }
                 else
@@ -241,14 +289,14 @@ bool DeployDataStep::Perform(CookingData& data)
                     if (srcDotnetFromEngine)
                     {
                         // Runtime files inside Engine Platform folder
-                        dstDotnetLibs /= TEXT("lib/net8.0");
-                        srcDotnetLibs /= TEXT("lib/net8.0");
+                        dstDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
+                        srcDotnetLibs /= String::Format(TEXT("lib/net{}.0"), version);
                     }
                     else
                     {
                         // Runtime files inside Dotnet SDK folder
                         dstDotnetLibs /= TEXT("shared/Microsoft.NETCore.App");
-                        srcDotnetLibs /= TEXT("../lib/net8.0");
+                        srcDotnetLibs /= String::Format(TEXT("../lib/net{}.0"), version);
                     }
                 }
                 LOG(Info, "Copying .NET files from {} to {}", packFolder, dstDotnet);
@@ -273,6 +321,7 @@ bool DeployDataStep::Perform(CookingData& data)
                     DEPLOY_NATIVE_FILE("libmonosgen-2.0.so");
                     DEPLOY_NATIVE_FILE("libSystem.IO.Compression.Native.so");
                     DEPLOY_NATIVE_FILE("libSystem.Native.so");
+                    DEPLOY_NATIVE_FILE("libSystem.Globalization.Native.so");
                     DEPLOY_NATIVE_FILE("libSystem.Security.Cryptography.Native.Android.so");
                     break;
                 case BuildPlatform::iOSARM64:

Source/Editor/CustomEditors/CustomEditor.cs

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

Source/Editor/CustomEditors/CustomEditorsUtil.cpp

@@ -39,14 +39,9 @@ CustomEditorsUtilService CustomEditorsUtilServiceInstance;
 
 struct Entry
 {
-    MClass* DefaultEditor;
-    MClass* CustomEditor;
-
-    Entry()
-    {
-        DefaultEditor = nullptr;
-        CustomEditor = nullptr;
-    }
+    MClass* DefaultEditor = nullptr;
+    MClass* CustomEditor = nullptr;
+    MType* CustomEditorType = nullptr;
 };
 
 Dictionary<MType*, Entry> Cache(512);
@@ -63,11 +58,11 @@ MTypeObject* CustomEditorsUtil::GetCustomEditor(MTypeObject* refType)
     Entry result;
     if (Cache.TryGet(type, result))
     {
+        if (result.CustomEditorType)
+            return INTERNAL_TYPE_GET_OBJECT(result.CustomEditorType);
         MClass* editor = result.CustomEditor ? result.CustomEditor : result.DefaultEditor;
         if (editor)
-        {
             return MUtils::GetType(editor);
-        }
     }
     return nullptr;
 }
@@ -157,7 +152,7 @@ void OnAssemblyLoaded(MAssembly* assembly)
         else if (typeClass)
         {
             auto& entry = Cache[mclass->GetType()];
-            entry.CustomEditor = typeClass;
+            entry.CustomEditorType = type;
 
             //LOG(Info, "Custom Editor {0} for type {1}", String(typeClass->GetFullName()), String(mclass->GetFullName()));
         }

Source/Editor/CustomEditors/Dedicated/ActorEditor.cs

@@ -9,6 +9,7 @@ using FlaxEditor.CustomEditors.Elements;
 using FlaxEditor.GUI;
 using FlaxEditor.GUI.ContextMenu;
 using FlaxEditor.GUI.Tree;
+using FlaxEditor.Modules;
 using FlaxEditor.Scripting;
 using FlaxEditor.Windows;
 using FlaxEditor.Windows.Assets;
@@ -67,12 +68,15 @@ namespace FlaxEditor.CustomEditors.Dedicated
                         // Use default prefab instance as a reference for the editor
                         Values.SetReferenceValue(prefabInstance);
 
-                        if (Presenter == Editor.Instance.Windows.PropertiesWin.Presenter)
+                        // Display prefab UI (when displaying object inside Prefab Window then display only nested prefabs)
+                        prefab.GetNestedObject(ref prefabObjectId, out var nestedPrefabId, out var nestedPrefabObjectId);
+                        var nestedPrefab = FlaxEngine.Content.Load<Prefab>(nestedPrefabId);
+                        var panel = layout.CustomContainer<UniformGridPanel>();
+                        panel.CustomControl.Height = 20.0f;
+                        panel.CustomControl.SlotsVertically = 1;
+                        if (Presenter == Editor.Instance.Windows.PropertiesWin.Presenter || nestedPrefab)
                         {
-                            // Add some UI
-                            var panel = layout.CustomContainer<UniformGridPanel>();
-                            panel.CustomControl.Height = 20.0f;
-                            panel.CustomControl.SlotsVertically = 1;
+                            var targetPrefab = nestedPrefab ?? prefab;
                             panel.CustomControl.SlotsHorizontally = 3;
                             
                             // Selecting actor prefab asset
@@ -80,22 +84,21 @@ namespace FlaxEditor.CustomEditors.Dedicated
                             selectPrefab.Button.Clicked += () =>
                             {
                                 Editor.Instance.Windows.ContentWin.ClearItemsSearch();
-                                Editor.Instance.Windows.ContentWin.Select(prefab);
+                                Editor.Instance.Windows.ContentWin.Select(targetPrefab);
                             };
 
                             // Edit selected prefab asset
                             var editPrefab = panel.Button("Edit Prefab");
-                            editPrefab.Button.Clicked += () =>
-                            {
-                                Editor.Instance.Windows.ContentWin.ClearItemsSearch();
-                                Editor.Instance.Windows.ContentWin.Select(prefab);
-                                Editor.Instance.Windows.ContentWin.Open(Editor.Instance.Windows.ContentWin.View.Selection[0]);
-                            };
-
-                            // Viewing changes applied to this actor
-                            var viewChanges = panel.Button("View Changes");
-                            viewChanges.Button.Clicked += () => ViewChanges(viewChanges.Button, new Float2(0.0f, 20.0f));
+                            editPrefab.Button.Clicked += () => Editor.Instance.Windows.ContentWin.Open(Editor.Instance.ContentDatabase.FindAsset(targetPrefab.ID));
                         }
+                        else
+                        {
+                            panel.CustomControl.SlotsHorizontally = 1;
+                        }
+
+                        // Viewing changes applied to this actor
+                        var viewChanges = panel.Button("View Changes");
+                        viewChanges.Button.Clicked += () => ViewChanges(viewChanges.Button, new Float2(0.0f, 20.0f));
 
                         // Link event to update editor on prefab apply
                         _linkedPrefabId = prefab.ID;

Source/Editor/CustomEditors/Dedicated/AnimatedModelEditor.cs

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

Source/Editor/CustomEditors/Dedicated/CurveObjectEditor.cs

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

Source/Editor/CustomEditors/Dedicated/LocalizationSettingsEditor.cs

@@ -186,12 +186,12 @@ namespace FlaxEditor.CustomEditors.Dedicated
                     foreach (var file in files)
                         FindNewKeysCSharp(file, newKeys, allKeys);
 
-                    // C++
-                    files = Directory.GetFiles(Globals.ProjectSourceFolder, "*.cpp", SearchOption.AllDirectories);
+                    // C/C++
+                    files = Directory.GetFiles(Globals.ProjectSourceFolder, "*.cpp", SearchOption.AllDirectories).Concat(Directory.GetFiles(Globals.ProjectSourceFolder, "*.c", SearchOption.AllDirectories)).ToArray();
                     filesCount += files.Length;
                     foreach (var file in files)
                         FindNewKeysCpp(file, newKeys, allKeys);
-                    files = Directory.GetFiles(Globals.ProjectSourceFolder, "*.h", SearchOption.AllDirectories);
+                    files = Directory.GetFiles(Globals.ProjectSourceFolder, "*.h", SearchOption.AllDirectories).Concat(Directory.GetFiles(Globals.ProjectSourceFolder, "*.hpp", SearchOption.AllDirectories)).ToArray();;
                     filesCount += files.Length;
                     foreach (var file in files)
                         FindNewKeysCpp(file, newKeys, allKeys);

Source/Editor/CustomEditors/Dedicated/ModelPrefabEditor.cs

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

Source/Editor/CustomEditors/Dedicated/ParticleEffectEditor.cs

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

Source/Editor/CustomEditors/Dedicated/SplineEditor.cs

@@ -92,7 +92,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
             {
                 if (IsLinearTangentMode(spline, index) || IsSmoothInTangentMode(spline, index) || IsSmoothOutTangentMode(spline, index))
                 {
-                    SetPointSmooth(spline, index);
+                    SetPointSmooth(Editor, spline, index);
                 }
             }
         }
@@ -145,7 +145,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
             {
                 if (!IsAlignedTangentMode(spline, index))
                 {
-                    SetPointSmooth(spline, index);
+                    SetPointSmooth(Editor, spline, index);
                 }
             }
 
@@ -176,7 +176,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
             /// <inheritdoc/>
             public override void OnSetMode(Spline spline, int index)
             {
-                SetTangentSmoothIn(spline, index);
+                SetTangentSmoothIn(Editor, spline, index);
                 Editor.SetSelectTangentIn(spline, index);
             }
         }
@@ -190,7 +190,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
             /// <inheritdoc/>
             public override void OnSetMode(Spline spline, int index)
             {
-                SetTangentSmoothOut(spline, index);
+                SetTangentSmoothOut(Editor, spline, index);
                 Editor.SetSelectTangentOut(spline, index);
             }
         }
@@ -756,14 +756,15 @@ namespace FlaxEditor.CustomEditors.Dedicated
             spline.UpdateSpline();
         }
 
-        private static void SetTangentSmoothIn(Spline spline, int index)
+        private static void SetTangentSmoothIn(SplineEditor editor, 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 cameraTransform = editor.Presenter.Owner.PresenterViewport.ViewTransform.Translation;
+                var smoothRange = SplineNode.NodeSizeByDistance(spline.GetSplineTangent(index, false).Translation, 10f, cameraTransform);
                 var previousKeyframe = spline.GetSplineKeyframe(index - 1);
                 var tangentDirection = keyframe.Value.WorldToLocalVector(previousKeyframe.Value.Translation - keyframe.Value.Translation);
                 tangentDirection = tangentDirection.Normalized * smoothRange;
@@ -775,14 +776,15 @@ namespace FlaxEditor.CustomEditors.Dedicated
             spline.UpdateSpline();
         }
 
-        private static void SetTangentSmoothOut(Spline spline, int index)
+        private static void SetTangentSmoothOut(SplineEditor editor, 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 cameraTransform = editor.Presenter.Owner.PresenterViewport.ViewTransform.Translation;
+                var smoothRange = SplineNode.NodeSizeByDistance(spline.GetSplineTangent(index, false).Translation, 10f, cameraTransform);
                 var nextKeyframe = spline.GetSplineKeyframe(index + 1);
                 var tangentDirection = keyframe.Value.WorldToLocalVector(nextKeyframe.Value.Translation - keyframe.Value.Translation);
                 tangentDirection = tangentDirection.Normalized * smoothRange;
@@ -795,7 +797,7 @@ namespace FlaxEditor.CustomEditors.Dedicated
             spline.UpdateSpline();
         }
 
-        private static void SetPointSmooth(Spline spline, int index)
+        private static void SetPointSmooth(SplineEditor editor, Spline spline, int index)
         {
             var keyframe = spline.GetSplineKeyframe(index);
             var tangentInSize = keyframe.TangentIn.Translation.Length;
@@ -803,7 +805,8 @@ namespace FlaxEditor.CustomEditors.Dedicated
 
             var isLastKeyframe = index >= spline.SplinePointsCount - 1;
             var isFirstKeyframe = index <= 0;
-            var smoothRange = SplineNode.NodeSizeByDistance(spline.GetSplinePoint(index), 10f);
+            var cameraTransform = editor.Presenter.Owner.PresenterViewport.ViewTransform.Translation;
+            var smoothRange = SplineNode.NodeSizeByDistance(spline.GetSplinePoint(index), 10f, cameraTransform);
 
             // Force smooth it's linear point
             if (tangentInSize == 0f)

Source/Editor/CustomEditors/Editors/AssetRefEditor.cs

@@ -4,6 +4,7 @@ using System;
 using System.Linq;
 using FlaxEditor.Content;
 using FlaxEditor.GUI;
+using FlaxEditor.GUI.Drag;
 using FlaxEditor.Scripting;
 using FlaxEngine;
 using FlaxEngine.GUI;
@@ -94,7 +95,7 @@ namespace FlaxEditor.CustomEditors.Editors
             if (assetReference != null)
             {
                 if (assetReference.UseSmallPicker)
-                    height = 32;
+                    height = 36;
                 if (string.IsNullOrEmpty(assetReference.TypeName))
                 {
                 }
@@ -122,7 +123,9 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             base.Refresh();
 
-            if (!HasDifferentValues)
+            var differentValues = HasDifferentValues;
+            Picker.DifferentValues = differentValues;
+            if (!differentValues)
             {
                 _isRefreshing = true;
                 var value = Values[0];
@@ -156,6 +159,17 @@ namespace FlaxEditor.CustomEditors.Editors
             private Rectangle DropdownRect => new Rectangle(Width - DropdownIconSize - DropdownIconMargin, DropdownIconMargin, DropdownIconSize, DropdownIconSize);
 
             public Action ShowPicker;
+            public Action<ContentItem> OnAssetDropped;
+            
+            private DragItems _dragItems;
+            private DragHandlers _dragHandlers;
+            private bool _hasValidDragOver;
+            private Func<ContentItem, bool> _validate;
+
+            public void SetValidationMethod(Func<ContentItem, bool> validate)
+            {
+                _validate = validate;
+            }
 
             public override void Draw()
             {
@@ -164,6 +178,14 @@ namespace FlaxEditor.CustomEditors.Editors
                 var style = FlaxEngine.GUI.Style.Current;
                 var dropdownRect = DropdownRect;
                 Render2D.DrawSprite(style.ArrowDown, dropdownRect, Enabled ? (DropdownRect.Contains(PointFromWindow(RootWindow.MousePosition)) ? style.BorderSelected : style.Foreground) : style.ForegroundDisabled);
+                
+                // Check if drag is over
+                if (IsDragOver && _hasValidDragOver)
+                {
+                    var bounds = new Rectangle(Float2.Zero, Size);
+                    Render2D.FillRectangle(bounds, style.Selection);
+                    Render2D.DrawRectangle(bounds, style.SelectionBorder);
+                }
             }
 
             public override bool OnMouseDown(Float2 location, MouseButton button)
@@ -207,6 +229,68 @@ namespace FlaxEditor.CustomEditors.Editors
                     return result;
                 }
             }
+
+            private DragDropEffect DragEffect => _hasValidDragOver ? DragDropEffect.Move : DragDropEffect.None;
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragEnter(ref Float2 location, DragData data)
+            {
+                base.OnDragEnter(ref location, data);
+
+                // Ensure to have valid drag helpers (uses lazy init)
+                if (_dragItems == null)
+                    _dragItems = new DragItems(ValidateDragAsset);
+                if (_dragHandlers == null)
+                {
+                    _dragHandlers = new DragHandlers
+                    {
+                        _dragItems,
+                    };
+                }
+
+                _hasValidDragOver = _dragHandlers.OnDragEnter(data) != DragDropEffect.None;
+                
+
+                return DragEffect;
+            }
+
+            private bool ValidateDragAsset(ContentItem contentItem)
+            {
+                // Load or get asset
+                return _validate?.Invoke(contentItem) ?? false;
+            }
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragMove(ref Float2 location, DragData data)
+            {
+                base.OnDragMove(ref location, data);
+
+                return DragEffect;
+            }
+
+            /// <inheritdoc />
+            public override void OnDragLeave()
+            {
+                _hasValidDragOver = false;
+                _dragHandlers.OnDragLeave();
+
+                base.OnDragLeave();
+            }
+
+            /// <inheritdoc />
+            public override DragDropEffect OnDragDrop(ref Float2 location, DragData data)
+            {
+                var result = DragEffect;
+
+                base.OnDragDrop(ref location, data);
+                
+                if (_dragItems.HasValidDrag)
+                {
+                    OnAssetDropped(_dragItems.Objects[0]);
+                }
+
+                return result;
+            }
         }
 
         private TextBoxWithPicker _textBox;
@@ -221,13 +305,21 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             if (HasDifferentTypes)
                 return;
+
+            _validator = new AssetPickerValidator(ScriptType.Null);
             _textBox = layout.Custom<TextBoxWithPicker>().CustomControl;
             _textBox.ShowPicker = OnShowPicker;
+            _textBox.OnAssetDropped = OnItemDropped;
             _textBox.EditEnd += OnEditEnd;
-            _validator = new AssetPickerValidator(ScriptType.Null);
+            _textBox.SetValidationMethod(_validator.IsValid);
             AssetRefEditor.ApplyAssetReferenceAttribute(Values, out _, _validator);
         }
 
+        private void OnItemDropped(ContentItem item)
+        {
+            SetPickerPath(item);
+        }
+
         private void OnShowPicker()
         {
             if (_validator.AssetType != ScriptType.Null)
@@ -285,12 +377,9 @@ namespace FlaxEditor.CustomEditors.Editors
         {
             base.Refresh();
 
-            if (!HasDifferentValues)
-            {
-                _isRefreshing = true;
-                _textBox.Text = GetPath();
-                _isRefreshing = false;
-            }
+            _isRefreshing = true;
+            _textBox.Text = HasDifferentValues ? "Multiple Values" : GetPath();
+            _isRefreshing = false;
         }
 
         /// <inheritdoc />