Merge remote-tracking branch 'origin/master' into 1.9

# Conflicts:
#	Source/Engine/UI/GUI/Common/Button.cs

Source/Editor/CustomEditors/CustomEditor.cs

@@ -296,6 +296,16 @@ namespace FlaxEditor.CustomEditors
             _values.Set(_parent.Values, value);
         }
 
+        private bool SyncParent()
+        {
+            // TODO: add attribute for types that want to sync their contents with a parent
+            var type = Values.Type.Type;
+            if (type == typeof(LocalizedString) ||
+                type == typeof(FontReference))
+                return true;
+            return _parent != null && !(_parent is SyncPointEditor);
+        }
+
         internal virtual void RefreshInternal()
         {
             if (_values == null)
@@ -317,7 +327,7 @@ namespace FlaxEditor.CustomEditors
 
                     // Propagate values up (eg. when member of structure gets modified, also structure should be updated as a part of the other object)
                     var obj = _parent;
-                    while (obj._parent != null && !(obj._parent is SyncPointEditor))
+                    while (obj.SyncParent())
                     {
                         obj.Values.Set(obj._parent.Values, obj.Values);
                         obj = obj._parent;

Source/Editor/CustomEditors/CustomEditorsUtil.cs

@@ -72,6 +72,8 @@ namespace FlaxEditor.CustomEditors
                 return new GenericEditor();
             if (targetType.IsArray)
             {
+                if (targetType.Type == null)
+                    return new ArrayEditor();
                 if (targetType.Type.GetArrayRank() != 1)
                     return new GenericEditor(); // Not-supported multidimensional array
 

Source/Editor/CustomEditors/Dedicated/UIControlEditor.cs

@@ -7,6 +7,7 @@ using FlaxEditor.CustomEditors.Editors;
 using FlaxEditor.CustomEditors.Elements;
 using FlaxEditor.GUI;
 using FlaxEditor.GUI.ContextMenu;
+using FlaxEditor.GUI.Input;
 using FlaxEditor.Scripting;
 using FlaxEngine;
 using FlaxEngine.GUI;
@@ -634,26 +635,29 @@ namespace FlaxEditor.CustomEditors.Dedicated
             LayoutElementsContainer vEl;
             Color axisColorX = ActorTransformEditor.AxisColorX;
             Color axisColorY = ActorTransformEditor.AxisColorY;
+            FloatValueBox xV, yV, wV, hV;
             if (xEq)
             {
-                xEl = UniformPanelCapsuleForObjectWithText(horUp, "X: ", xItem.GetValues(Values), axisColorX);
+                xEl = UniformPanelCapsuleForObjectWithText(horUp, "X: ", xItem.GetValues(Values), axisColorX, out xV);
-                vEl = UniformPanelCapsuleForObjectWithText(horDown, "Width: ", widthItem.GetValues(Values), axisColorX);
+                vEl = UniformPanelCapsuleForObjectWithText(horDown, "Width: ", widthItem.GetValues(Values), axisColorX, out wV);
             }
             else
             {
-                xEl = UniformPanelCapsuleForObjectWithText(horUp, "Left: ", leftItem.GetValues(Values), axisColorX);
+                xEl = UniformPanelCapsuleForObjectWithText(horUp, "Left: ", leftItem.GetValues(Values), axisColorX, out xV);
-                vEl = UniformPanelCapsuleForObjectWithText(horDown, "Right: ", rightItem.GetValues(Values), axisColorX);
+                vEl = UniformPanelCapsuleForObjectWithText(horDown, "Right: ", rightItem.GetValues(Values), axisColorX, out wV);
             }
             if (yEq)
             {
-                yEl = UniformPanelCapsuleForObjectWithText(horUp, "Y: ", yItem.GetValues(Values), axisColorY);
+                yEl = UniformPanelCapsuleForObjectWithText(horUp, "Y: ", yItem.GetValues(Values), axisColorY, out yV);
-                hEl = UniformPanelCapsuleForObjectWithText(horDown, "Height: ", heightItem.GetValues(Values), axisColorY);
+                hEl = UniformPanelCapsuleForObjectWithText(horDown, "Height: ", heightItem.GetValues(Values), axisColorY, out hV);
             }
             else
             {
-                yEl = UniformPanelCapsuleForObjectWithText(horUp, "Top: ", topItem.GetValues(Values), axisColorY);
+                yEl = UniformPanelCapsuleForObjectWithText(horUp, "Top: ", topItem.GetValues(Values), axisColorY, out yV);
-                hEl = UniformPanelCapsuleForObjectWithText(horDown, "Bottom: ", bottomItem.GetValues(Values), axisColorY);
+                hEl = UniformPanelCapsuleForObjectWithText(horDown, "Bottom: ", bottomItem.GetValues(Values), axisColorY, out hV);
             }
+
+            // Anchors
             xEl.Control.AnchorMin = new Float2(0, xEl.Control.AnchorMin.Y);
             xEl.Control.AnchorMax = new Float2(0.5f, xEl.Control.AnchorMax.Y);
 
@@ -665,6 +669,15 @@ namespace FlaxEditor.CustomEditors.Dedicated
 
             hEl.Control.AnchorMin = new Float2(0.5f, xEl.Control.AnchorMin.Y);
             hEl.Control.AnchorMax = new Float2(1, xEl.Control.AnchorMax.Y);
+
+            // Navigation path
+            xV.NavTargetRight = yV;
+            yV.NavTargetRight = wV;
+            wV.NavTargetRight = hV;
+
+            yV.NavTargetLeft = xV;
+            wV.NavTargetLeft = yV;
+            hV.NavTargetLeft = wV;
         }
 
         private VerticalPanelElement VerticalPanelWithoutMargin(LayoutElementsContainer cont)
@@ -684,17 +697,19 @@ namespace FlaxEditor.CustomEditors.Dedicated
             return grid;
         }
 
-        private CustomElementsContainer<UniformGridPanel> UniformPanelCapsuleForObjectWithText(LayoutElementsContainer el, string text, ValueContainer values, Color borderColor)
+        private CustomElementsContainer<UniformGridPanel> UniformPanelCapsuleForObjectWithText(LayoutElementsContainer el, string text, ValueContainer values, Color borderColor, out FloatValueBox valueBox)
         {
+            valueBox = null;
             var grid = UniformGridTwoByOne(el);
             grid.CustomControl.SlotPadding = new Margin(5, 5, 1, 1);
             var label = grid.Label(text, TextAlignment.Far);
             var editor = grid.Object(values);
             if (editor is FloatEditor floatEditor && floatEditor.Element is FloatValueElement floatEditorElement)
             {
+                valueBox = floatEditorElement.ValueBox;
                 var back = FlaxEngine.GUI.Style.Current.TextBoxBackground;
-                floatEditorElement.ValueBox.BorderColor = Color.Lerp(borderColor, back, ActorTransformEditor.AxisGreyOutFactor);
+                valueBox.BorderColor = Color.Lerp(borderColor, back, ActorTransformEditor.AxisGreyOutFactor);
-                floatEditorElement.ValueBox.BorderSelectedColor = borderColor;
+                valueBox.BorderSelectedColor = borderColor;
             }
             return grid;
         }

Source/Editor/CustomEditors/Editors/Vector2Editor.cs

@@ -69,7 +69,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding;
@@ -158,7 +158,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding;
@@ -247,7 +247,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding;

Source/Editor/CustomEditors/Editors/Vector3Editor.cs

@@ -143,7 +143,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var xValue = XElement.ValueBox.Value;
@@ -318,7 +318,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding || ZElement.IsSliding;
@@ -418,7 +418,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding || ZElement.IsSliding;

Source/Editor/CustomEditors/Editors/Vector4Editor.cs

@@ -89,7 +89,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding || ZElement.IsSliding || WElement.IsSliding;
@@ -200,7 +200,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding || ZElement.IsSliding || WElement.IsSliding;
@@ -311,7 +311,7 @@ namespace FlaxEditor.CustomEditors.Editors
 
         private void OnValueChanged()
         {
-            if (IsSetBlocked)
+            if (IsSetBlocked || Values == null)
                 return;
 
             var isSliding = XElement.IsSliding || YElement.IsSliding || ZElement.IsSliding || WElement.IsSliding;

Source/Editor/GUI/AssetPicker.cs

@@ -218,6 +218,13 @@ namespace FlaxEditor.GUI
                 Render2D.FillRectangle(bounds, style.Selection);
                 Render2D.DrawRectangle(bounds, style.SelectionBorder);
             }
+
+            // Navigation focus highlight
+            if (IsNavFocused)
+            {
+                var bounds = new Rectangle(Float2.Zero, Size);
+                Render2D.DrawRectangle(bounds, style.BackgroundSelected);
+            }
         }
 
         /// <inheritdoc />
@@ -286,35 +293,7 @@ namespace FlaxEditor.GUI
                 else if (Button1Rect.Contains(location))
                 {
                     Focus();
-                    if (Validator.AssetType != ScriptType.Null)
+                    OnSubmit();
-                    {
-                        // Show asset picker popup
-                        var popup = AssetSearchPopup.Show(this, Button1Rect.BottomLeft, Validator.IsValid, item =>
-                        {
-                            Validator.SelectedItem = item;
-                            RootWindow.Focus();
-                            Focus();
-                        });
-                        if (Validator.SelectedAsset != null)
-                        {
-                            var selectedAssetName = Path.GetFileNameWithoutExtension(Validator.SelectedAsset.Path);
-                            popup.ScrollToAndHighlightItemByName(selectedAssetName);
-                        }
-                    }
-                    else
-                    {
-                        // Show content item picker popup
-                        var popup = ContentSearchPopup.Show(this, Button1Rect.BottomLeft, Validator.IsValid, item =>
-                        {
-                            Validator.SelectedItem = item;
-                            RootWindow.Focus();
-                            Focus();
-                        });
-                        if (Validator.SelectedItem != null)
-                        {
-                            popup.ScrollToAndHighlightItemByName(Validator.SelectedItem.ShortName);
-                        }
-                    }
                 }
                 else if (Validator.SelectedAsset != null || Validator.SelectedItem != null)
                 {
@@ -412,5 +391,41 @@ namespace FlaxEditor.GUI
 
             return DragDropEffect.Move;
         }
+
+        /// <inheritdoc />
+        public override void OnSubmit()
+        {
+            base.OnSubmit();
+
+            if (Validator.AssetType != ScriptType.Null)
+            {
+                // Show asset picker popup
+                var popup = AssetSearchPopup.Show(this, Button1Rect.BottomLeft, Validator.IsValid, item =>
+                {
+                    Validator.SelectedItem = item;
+                    RootWindow.Focus();
+                    Focus();
+                });
+                if (Validator.SelectedAsset != null)
+                {
+                    var selectedAssetName = Path.GetFileNameWithoutExtension(Validator.SelectedAsset.Path);
+                    popup.ScrollToAndHighlightItemByName(selectedAssetName);
+                }
+            }
+            else
+            {
+                // Show content item picker popup
+                var popup = ContentSearchPopup.Show(this, Button1Rect.BottomLeft, Validator.IsValid, item =>
+                {
+                    Validator.SelectedItem = item;
+                    RootWindow.Focus();
+                    Focus();
+                });
+                if (Validator.SelectedItem != null)
+                {
+                    popup.ScrollToAndHighlightItemByName(Validator.SelectedItem.ShortName);
+                }
+            }
+        }
     }
 }

Source/Editor/Modules/SourceCodeEditing/CodeEditingModule.cs

@@ -155,6 +155,11 @@ namespace FlaxEditor.Modules.SourceCodeEditing
         /// </summary>
         public readonly CachedTypesCollection All = new CachedAllTypesCollection(8096, ScriptType.Null, type => true, HasAssemblyValidAnyTypes);
 
+        /// <summary> 
+        /// The all types collection from all assemblies (including C# system libraries).
+        /// </summary>
+        public readonly CachedTypesCollection AllWithStd = new CachedTypesCollection(8096, ScriptType.Null, type => true, assembly => true);
+
         /// <summary>
         /// The all valid types collection for the Visual Script property types (includes basic types like int/float, structures, object references).
         /// </summary>
@@ -574,21 +579,17 @@ namespace FlaxEditor.Modules.SourceCodeEditing
         private static bool HasAssemblyValidAnyTypes(Assembly assembly)
         {
             var codeBase = Utils.GetAssemblyLocation(assembly);
+            if (string.IsNullOrEmpty(codeBase))
+                return true;
 #if USE_NETCORE
             if (assembly.ManifestModule.FullyQualifiedName == "<In Memory Module>")
                 return false;
 
-            if (string.IsNullOrEmpty(codeBase))
-                return true;
-
             // Skip runtime related assemblies
             string repositoryUrl = assembly.GetCustomAttributes<AssemblyMetadataAttribute>().FirstOrDefault(x => x.Key == "RepositoryUrl")?.Value ?? "";
             if (repositoryUrl != "https://github.com/dotnet/runtime")
                 return true;
 #else
-            if (string.IsNullOrEmpty(codeBase))
-                return true;
-
             // Skip assemblies from in-build Mono directory
             if (!codeBase.Contains("/Mono/lib/mono/"))
                 return true;

Source/Editor/Options/InterfaceOptions.cs

@@ -211,10 +211,10 @@ namespace FlaxEditor.Options
         public bool SeparateValueAndUnit { get; set; }
 
         /// <summary>
-        /// Gets or sets the option to put a space between numbers and units for unit formatting.
+        /// Gets or sets tree line visibility.
         /// </summary>
         [DefaultValue(true)]
-        [EditorDisplay("Interface"), EditorOrder(320)]
+        [EditorDisplay("Interface"), EditorOrder(320), Tooltip("Toggles tree line visibility in places like the Scene or Content Panel.")]
         public bool ShowTreeLines { get; set; } = true;
 
         /// <summary>
@@ -369,7 +369,7 @@ namespace FlaxEditor.Options
         public int NumberOfGameClientsToLaunch = 1;
 
         /// <summary>
-        /// Gets or sets the visject connection curvature.
+        /// Gets or sets the curvature of the line connecting to connected visject nodes.
         /// </summary>
         [DefaultValue(1.0f), Range(0.0f, 2.0f)]
         [EditorDisplay("Visject"), EditorOrder(550)]

Source/Editor/Surface/SurfaceComment.cs

@@ -74,6 +74,7 @@ namespace FlaxEditor.Surface
                 Visible = false,
                 Parent = this,
                 EndEditOnClick = false, // We have to handle this ourselves, otherwise the textbox instantly loses focus when double-clicking the header
+                HorizontalAlignment = TextAlignment.Center,
             };
         }
 

Source/Editor/Surface/SurfaceUtils.cs

@@ -448,6 +448,8 @@ namespace FlaxEditor.Surface
                 sb.Append("virtual ");
             sb.Append(valueType.Name);
             sb.Append(' ');
+            if (member.IsMethod)
+                sb.Append(member.DeclaringType.Namespace).Append('.');
             sb.Append(declaringType.Name);
             sb.Append('.');
             sb.Append(name);

Source/Editor/Surface/VisjectSurface.ContextMenu.cs

@@ -140,12 +140,12 @@ namespace FlaxEditor.Surface
                 var searchStartTime = DateTime.Now;
 #endif
 
-                foreach (var scriptType in Editor.Instance.CodeEditing.All.Get())
+                foreach (var scriptType in Editor.Instance.CodeEditing.AllWithStd.Get())
                 {
-                    if (!SurfaceUtils.IsValidVisualScriptType(scriptType))
+                    if (SurfaceUtils.IsValidVisualScriptType(scriptType))
-                        continue;
+                    {
-
+                        _iterator(scriptType, _cache, _version);
-                    _iterator(scriptType, _cache, _version);
+                    }
                 }
 
                 // Add group to context menu (on a main thread)

Source/Editor/Surface/VisualScriptSurface.cs

@@ -17,7 +17,6 @@ using FlaxEditor.Surface.Elements;
 using FlaxEngine;
 using FlaxEngine.GUI;
 using FlaxEngine.Utilities;
-using Object = FlaxEngine.Object;
 
 namespace FlaxEditor.Surface
 {
@@ -36,6 +35,14 @@ namespace FlaxEditor.Surface
             Archetypes = new List<NodeArchetype>(),
         };
 
+        private static readonly string[] _blacklistedTypeNames =
+        {
+            "Newtonsoft.Json.",
+            "System.Array",
+            "System.Linq.Expressions.",
+            "System.Reflection.",
+        };
+
         private static NodesCache _nodesCache = new NodesCache(IterateNodesCache);
         private DragActors _dragActors;
 
@@ -269,8 +276,11 @@ namespace FlaxEditor.Surface
         {
             // Skip Newtonsoft.Json stuff
             var scriptTypeTypeName = scriptType.TypeName;
-            if (scriptTypeTypeName.StartsWith("Newtonsoft.Json."))
+            for (var i = 0; i < _blacklistedTypeNames.Length; i++)
-                return;
+            {
+                if (scriptTypeTypeName.StartsWith(_blacklistedTypeNames[i]))
+                    return;
+            }
             var scriptTypeName = scriptType.Name;
 
             // Enum

Source/Editor/Viewport/EditorGizmoViewport.cs

@@ -4,6 +4,7 @@ using System;
 using System.Collections.Generic;
 using FlaxEditor.Gizmo;
 using FlaxEditor.GUI.ContextMenu;
+using FlaxEditor.GUI.Input;
 using FlaxEditor.SceneGraph;
 using FlaxEditor.Viewport.Cameras;
 using FlaxEditor.Viewport.Widgets;
@@ -298,9 +299,33 @@ namespace FlaxEditor.Viewport
             }
             var buttonBB = translateSnappingCM.AddButton("Bounding Box").LinkTooltip("Snaps the selection based on it's bounding volume");
             buttonBB.Tag = -1.0f;
-            translateSnappingCM.ButtonClicked += button =>
+            var buttonCustom = translateSnappingCM.AddButton("Custom");
+            buttonCustom.LinkTooltip("Custom grid size");
+            const float defaultCustomTranslateSnappingValue = 250.0f;
+            float customTranslateSnappingValue = transformGizmo.TranslationSnapValue;
+            if (customTranslateSnappingValue < 0.0f)
+                customTranslateSnappingValue = defaultCustomTranslateSnappingValue;
+            foreach (var v in TranslateSnapValues)
             {
-                var v = (float)button.Tag;
+                if (Mathf.Abs(transformGizmo.TranslationSnapValue - v) < 0.001f)
+                {
+                    customTranslateSnappingValue = defaultCustomTranslateSnappingValue;
+                    break;
+                }
+            }
+            buttonCustom.Tag = customTranslateSnappingValue;
+            var customValue = new FloatValueBox(customTranslateSnappingValue, Style.Current.FontMedium.MeasureText(buttonCustom.Text).X + 5, 2, 70.0f, 0.001f, float.MaxValue, 0.1f)
+            {
+                Parent = buttonCustom
+            };
+            customValue.ValueChanged += () =>
+            {
+                buttonCustom.Tag = customValue.Value;
+                buttonCustom.Click();
+            };
+            translateSnappingCM.ButtonClicked += b =>
+            {
+                var v = (float)b.Tag;
                 transformGizmo.TranslationSnapValue = v;
                 if (v < 0.0f)
                     translateSnapping.Text = "Bounding Box";

Source/Editor/Viewport/MainEditorGizmoViewport.cs

@@ -221,7 +221,7 @@ namespace FlaxEditor.Viewport
             editor.SceneEditing.SelectionChanged += OnSelectionChanged;
 
             // Gizmo widgets
-            AddGizmoViewportWidgets(this, TransformGizmo);
+            AddGizmoViewportWidgets(this, TransformGizmo, true);
 
             // Show grid widget
             _showGridButton = ViewWidgetShowMenu.AddButton("Grid", () => Grid.Enabled = !Grid.Enabled);

Source/Editor/Windows/Assets/AnimationGraphFunctionWindow.cs

@@ -32,6 +32,7 @@ namespace FlaxEditor.Windows.Assets
             _surface.ContextChanged += OnSurfaceContextChanged;
 
             // Toolstrip
+            SurfaceUtils.PerformCommonSetup(this, _toolstrip, _surface, out _saveButton, out _undoButton, out _redoButton);
             _toolstrip.AddSeparator();
             _toolstrip.AddButton(editor.Icons.Docs64, () => Platform.OpenUrl(Utilities.Constants.DocsUrl + "manual/animation/anim-graph/index.html")).LinkTooltip("See documentation to learn more");
 

Source/Editor/Windows/Assets/MaterialFunctionWindow.cs

@@ -28,6 +28,7 @@ namespace FlaxEditor.Windows.Assets
             };
 
             // Toolstrip
+            SurfaceUtils.PerformCommonSetup(this, _toolstrip, _surface, out _saveButton, out _undoButton, out _redoButton);
             _toolstrip.AddSeparator();
             _toolstrip.AddButton(editor.Icons.Docs64, () => Platform.OpenUrl(Utilities.Constants.DocsUrl + "manual/graphics/materials/index.html")).LinkTooltip("See documentation to learn more");
         }

Source/Editor/Windows/Assets/ParticleEmitterFunctionWindow.cs

@@ -28,6 +28,7 @@ namespace FlaxEditor.Windows.Assets
             };
 
             // Toolstrip
+            SurfaceUtils.PerformCommonSetup(this, _toolstrip, _surface, out _saveButton, out _undoButton, out _redoButton);
             _toolstrip.AddSeparator();
             _toolstrip.AddButton(editor.Icons.Docs64, () => Platform.OpenUrl(Utilities.Constants.DocsUrl + "manual/particles/index.html")).LinkTooltip("See documentation to learn more");
         }

Source/Editor/Windows/Assets/SpriteAtlasWindow.cs

@@ -153,6 +153,14 @@ namespace FlaxEditor.Windows.Assets
                 {
                     var menu = new ContextMenu();
 
+                    var copySprite = menu.AddButton("Copy sprite");
+                    copySprite.Tag = groupPanel.Tag;
+                    copySprite.ButtonClicked += OnCopySpriteClicked;
+
+                    var pasteSprite = menu.AddButton("Paste sprite");
+                    pasteSprite.Tag = groupPanel.Tag;
+                    pasteSprite.ButtonClicked += OnPasteSpriteClicked;
+
                     var deleteSprite = menu.AddButton("Delete sprite");
                     deleteSprite.Tag = groupPanel.Tag;
                     deleteSprite.ButtonClicked += OnDeleteSpriteClicked;
@@ -160,6 +168,24 @@ namespace FlaxEditor.Windows.Assets
                     menu.Show(groupPanel, location);
                 }
 
+                private void OnCopySpriteClicked(ContextMenuButton button)
+                {
+                    var window = ((PropertiesProxy)ParentEditor.Values[0])._window;
+                    var index = (int)button.Tag;
+                    var sprite = window.Asset.GetSprite(index);
+                    Clipboard.Text = FlaxEngine.Json.JsonSerializer.Serialize(sprite, typeof(Sprite));
+                }
+
+                private void OnPasteSpriteClicked(ContextMenuButton button)
+                {
+                    var window = ((PropertiesProxy)ParentEditor.Values[0])._window;
+                    var index = (int)button.Tag;
+                    var sprite = window.Asset.GetSprite(index);
+                    var pasted = FlaxEngine.Json.JsonSerializer.Deserialize<Sprite>(Clipboard.Text);
+                    sprite.Area = pasted.Area;
+                    window.Asset.SetSprite(index, ref sprite);
+                }
+
                 private void OnDeleteSpriteClicked(ContextMenuButton button)
                 {
                     var window = ((PropertiesProxy)ParentEditor.Values[0])._window;

Source/Editor/Windows/Assets/VisjectFunctionSurfaceWindow.cs

@@ -27,9 +27,21 @@ namespace FlaxEditor.Windows.Assets
         /// </summary>
         protected readonly Panel _panel;
 
-        private readonly ToolStripButton _saveButton;
+        /// <summary>
-        private readonly ToolStripButton _undoButton;
+        /// Save button.
-        private readonly ToolStripButton _redoButton;
+        /// </summary>
+        protected ToolStripButton _saveButton;
+
+        /// <summary>
+        /// Undo button.
+        /// </summary>
+        protected ToolStripButton _undoButton;
+
+        /// <summary>
+        /// Redo button.
+        /// </summary>
+        protected ToolStripButton _redoButton;
+
         private bool _showWholeGraphOnLoad = true;
 
         /// <summary>
@@ -61,17 +73,12 @@ namespace FlaxEditor.Windows.Assets
         protected VisjectFunctionSurfaceWindow(Editor editor, AssetItem item)
         : base(editor, item)
         {
-            var inputOptions = Editor.Options.Options.Input;
-
             // Undo
             _undo = new Undo();
             _undo.UndoDone += OnUndoRedo;
             _undo.RedoDone += OnUndoRedo;
             _undo.ActionDone += OnUndoRedo;
 
-            // Toolstrip
-            SurfaceUtils.PerformCommonSetup(this, _toolstrip, _surface, out _saveButton, out _undoButton, out _redoButton);
-
             // Panel
             _panel = new Panel(ScrollBars.None)
             {

Source/Editor/Windows/SplashScreen.cpp

@@ -135,6 +135,7 @@ const Char* SplashScreenQuotes[] =
     TEXT("Drum roll please"),
     TEXT("Good Luck Have Fun"),
     TEXT("GG Well Played"),
+    TEXT("Now with documentation."),
 };
 
 SplashScreen::~SplashScreen()

Source/Engine/AI/BehaviorTreeNodes.cpp

@@ -396,8 +396,8 @@ void BehaviorTreeMoveToNode::GetAgentSize(Actor* agent, float& outRadius, float&
     // Estimate actor bounds to extract capsule information
     const BoundingBox box = agent->GetBox();
     const BoundingSphere sphere = agent->GetSphere();
-    outRadius = sphere.Radius;
+    outRadius = (float)sphere.Radius;
-    outHeight = box.GetSize().Y;
+    outHeight = (float)box.GetSize().Y;
 }
 
 int32 BehaviorTreeMoveToNode::GetStateSize() const
@@ -522,7 +522,7 @@ String BehaviorTreeMoveToNode::GetDebugInfo(const BehaviorUpdateContext& context
                 goal = state->GoalLocation.ToString();
             const Vector3 agentLocation = state->Agent->GetPosition();
             const Vector3 agentLocationOnPath = agentLocation + state->AgentOffset;
-            float distanceLeft = state->Path.Count() > state->TargetPathIndex ? Vector3::Distance(state->Path[state->TargetPathIndex], agentLocationOnPath) : 0;
+            Real distanceLeft = state->Path.Count() > state->TargetPathIndex ? Vector3::Distance(state->Path[state->TargetPathIndex], agentLocationOnPath) : 0;
             for (int32 i = state->TargetPathIndex; i < state->Path.Count(); i++)
                 distanceLeft += Vector3::Distance(state->Path[i - 1], state->Path[i]);
             return String::Format(TEXT("Agent: '{}'\nGoal: '{}'\nDistance: {}"), agent, goal, (int32)distanceLeft);
@@ -559,7 +559,7 @@ void BehaviorTreeMoveToNode::State::OnUpdate()
     const float acceptableHeightPercentage = 1.05f;
     const float testHeight = agentHeight * acceptableHeightPercentage;
     const Vector3 toGoal = agentLocationOnPath - pathSegmentEnd;
-    const float toGoalHeightDiff = (toGoal * UpVector).SumValues();
+    const Real toGoalHeightDiff = (toGoal * UpVector).SumValues();
     if (toGoal.Length() <= testRadius && toGoalHeightDiff <= testHeight)
     {
         TargetPathIndex++;

Source/Engine/Animations/Curve.cs

@@ -465,7 +465,7 @@ namespace FlaxEngine
         /// <summary>
         /// A single keyframe that can be injected into linear curve.
         /// </summary>
-        [StructLayout(LayoutKind.Sequential)]
+        [StructLayout(LayoutKind.Sequential, Pack = 2)]
         public struct Keyframe : IComparable, IComparable<Keyframe>
         {
             /// <summary>
@@ -720,7 +720,7 @@ namespace FlaxEngine
         /// <summary>
         /// A single keyframe that can be injected into Bezier curve.
         /// </summary>
-        [StructLayout(LayoutKind.Sequential)]
+        [StructLayout(LayoutKind.Sequential, Pack = 2)]
         public struct Keyframe : IComparable, IComparable<Keyframe>
         {
             /// <summary>

Source/Engine/Animations/InverseKinematics.cpp

@@ -113,7 +113,7 @@ void InverseKinematics::SolveTwoBoneIK(Transform& rootTransform, Transform& midJ
         newMidJointPos = rootTransform.Translation + projJointDist * toTargetDir + jointLineDist * bendDirection;
     }
     // TODO: fix the new IK impl (https://github.com/FlaxEngine/FlaxEngine/pull/2421) to properly work for character from https://github.com/PrecisionRender/CharacterControllerPro
-#define OLD 0
+#define OLD 1
     // Update root joint orientation
     {
 #if OLD

Source/Engine/Content/Asset.cpp

@@ -7,6 +7,7 @@
 #include "Loading/ContentLoadingManager.h"
 #include "Loading/Tasks/LoadAssetTask.h"
 #include "Engine/Core/Log.h"
+#include "Engine/Core/LogContext.h"
 #include "Engine/Engine/Engine.h"
 #include "Engine/Threading/Threading.h"
 #include "Engine/Profiler/ProfilerCPU.h"
@@ -596,9 +597,10 @@ bool Asset::IsInternalType() const
 
 bool Asset::onLoad(LoadAssetTask* task)
 {
-    if (task->Asset.Get() != this || Platform::AtomicRead(&_loadingTask) == 0)
     // It may fail when task is cancelled and new one was created later (don't crash but just end with an error)
+    if (task->Asset.Get() != this || Platform::AtomicRead(&_loadingTask) == 0)
         return true;
+    LogContextScope logContext(GetID());
 
     Locker.Lock();
 

Source/Engine/Content/Content.cpp

@@ -9,6 +9,7 @@
 #include "Storage/JsonStorageProxy.h"
 #include "Factories/IAssetFactory.h"
 #include "Engine/Core/Log.h"
+#include "Engine/Core/LogContext.h"
 #include "Engine/Core/Types/String.h"
 #include "Engine/Core/ObjectsRemovalService.h"
 #include "Engine/Engine/EngineService.h"
@@ -970,6 +971,7 @@ Asset* Content::LoadAsync(const Guid& id, const ScriptingTypeHandle& type)
         if (IsAssetTypeIdInvalid(type, result->GetTypeHandle()) && !result->Is(type))
         {
             LOG(Warning, "Different loaded asset type! Asset: \'{0}\'. Expected type: {1}", result->ToString(), type.ToString());
+            LogContext::Print(LogType::Warning);
             return nullptr;
         }
         return result;
@@ -1004,6 +1006,7 @@ Asset* Content::LoadAsync(const Guid& id, const ScriptingTypeHandle& type)
     if (!GetAssetInfo(id, assetInfo))
     {
         LOG(Warning, "Invalid or missing asset ({0}, {1}).", id, type.ToString());
+        LogContext::Print(LogType::Warning);
         LOAD_FAILED();
     }
 #if ASSETS_LOADING_EXTRA_VERIFICATION

Source/Engine/ContentImporters/ImportModel.cpp

@@ -5,6 +5,7 @@
 #if COMPILE_WITH_ASSETS_IMPORTER
 
 #include "Engine/Core/Log.h"
+#include "Engine/Core/Cache.h"
 #include "Engine/Core/Collections/Sorting.h"
 #include "Engine/Core/Collections/ArrayExtensions.h"
 #include "Engine/Serialization/MemoryWriteStream.h"
@@ -766,6 +767,7 @@ CreateAssetResult ImportModel::CreatePrefab(CreateAssetContext& context, ModelDa
         // Link with object from prefab (if reimporting)
         if (prefab)
         {
+            rapidjson_flax::StringBuffer buffer;
             for (Actor* a : nodeActors)
             {
                 for (const auto& i : prefab->ObjectsCache)
@@ -776,6 +778,32 @@ CreateAssetResult ImportModel::CreatePrefab(CreateAssetContext& context, ModelDa
                     if (o->GetName() != a->GetName()) // Name match
                         continue;
 
+                    // Preserve local changes made in the prefab
+                    {
+                        // Serialize
+                        buffer.Clear();
+                        CompactJsonWriter writer(buffer);
+                        writer.StartObject();
+                        const void* defaultInstance = o->GetType().GetDefaultInstance();
+                        o->Serialize(writer, defaultInstance);
+                        writer.EndObject();
+
+                        // Parse json
+                        rapidjson_flax::Document document;
+                        document.Parse(buffer.GetString(), buffer.GetSize());
+
+                        // Strip unwanted data
+                        document.RemoveMember("ID");
+                        document.RemoveMember("ParentID");
+                        document.RemoveMember("PrefabID");
+                        document.RemoveMember("PrefabObjectID");
+                        document.RemoveMember("Name");
+
+                        // Deserialize object
+                        auto modifier = Cache::ISerializeModifier.Get();
+                        a->Deserialize(document, &*modifier);
+                    }
+
                     // Mark as this object already exists in prefab so will be preserved when updating it
                     a->LinkPrefab(o->GetPrefabID(), o->GetPrefabObjectID());
                     break;

Source/Engine/Core/LogContext.cpp

@@ -1,9 +1,16 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 #include "LogContext.h"
+#include "Engine/Core/Log.h"
 #include "Engine/Core/Types/Guid.h"
 #include "Engine/Core/Types/String.h"
+#include "Engine/Core/Types/StringBuilder.h"
 #include "Engine/Core/Collections/Array.h"
+#include "Engine/Scripting/Scripting.h"
+#include "Engine/Scripting/Script.h"
+#include "Engine/Content/Asset.h"
+#include "Engine/Content/Content.h"
+#include "Engine/Level/Actor.h"
 #include "Engine/Threading/ThreadLocal.h"
 
 struct LogContextThreadData
@@ -30,7 +37,7 @@ struct LogContextThreadData
         Count--;
     }
 
-    LogContextData Peek()
+    LogContextData Peek() const
     {
         return Count > 0 ? Ptr[Count - 1] : LogContextData();
     }
@@ -38,12 +45,58 @@ struct LogContextThreadData
 
 ThreadLocal<LogContextThreadData> GlobalLogContexts;
 
-String LogContext::GetInfo()
+void LogContext::Print(LogType verbosity)
 {
-    LogContextData context = LogContext::Get();
+    auto& stack = GlobalLogContexts.Get();
-    if (context.ObjectID != Guid::Empty)
+    if (stack.Count == 0)
-        return String::Format(TEXT("(Loading source was {0})"), context.ObjectID);
+        return;
-    return String::Empty;
+    const StringView indentation(TEXT("    "));
+    StringBuilder msg;
+    for (int32 index = (int32)stack.Count - 1; index >= 0; index--)
+    {
+        // Build call hierarchy via indentation
+        msg.Clear();
+        for (uint32 i = index; i < stack.Count; i++)
+            msg.Append(indentation);
+
+        LogContextData& context = stack.Ptr[index];
+        if (context.ObjectID != Guid::Empty)
+        {
+            // Object reference context
+            msg.Append(TEXT(" Referenced by "));
+            if (ScriptingObject* object = Scripting::TryFindObject(context.ObjectID))
+            {
+                const StringAnsiView typeName(object->GetType().Fullname);
+                if (Asset* asset = ScriptingObject::Cast<Asset>(object))
+                {
+                    msg.AppendFormat(TEXT("asset '{}' ({}, {})"), asset->GetPath(), asset->GetTypeName(), context.ObjectID);
+                }
+                else if (Actor* actor = ScriptingObject::Cast<Actor>(object))
+                {
+                    msg.AppendFormat(TEXT("actor '{}' ({}, {})"), actor->GetNamePath(), String(typeName), context.ObjectID);
+                }
+                else if (Script* script = ScriptingObject::Cast<Script>(object))
+                {
+                    msg.AppendFormat(TEXT("script '{}' ({}, {})"), script->GetNamePath(), String(typeName), context.ObjectID);
+                }
+                else
+                {
+                    msg.AppendFormat(TEXT("object {} ({})"), String(typeName), context.ObjectID);
+                }
+            }
+            else if (Asset* asset = Content::GetAsset(context.ObjectID))
+            {
+                msg.AppendFormat(TEXT("asset '{}' ({}, {})"), asset->GetPath(), asset->GetTypeName(), context.ObjectID);
+            }
+            else
+            {
+                msg.AppendFormat(TEXT("object {}"), context.ObjectID);
+            }
+        }
+
+        // Print message
+        Log::Logger::Write(verbosity, msg.ToStringView());
+    }
 }
 
 void LogContext::Push(const Guid& id)

Source/Engine/Core/LogContext.h

@@ -2,6 +2,7 @@
 
 #pragma once
 
+#include "Engine/Core/Log.h"
 #include "Engine/Core/Config.h"
 #include "Engine/Scripting/ScriptingType.h"
 
@@ -9,7 +10,7 @@ class String;
 struct Guid;
 
 /// <summary>
-/// Log context data structure. Contains different kinds of context data for different situtations.
+/// Log context data structure. Contains different kinds of context data for different situations.
 /// </summary>
 API_STRUCT(NoDefault) struct FLAXENGINE_API LogContextData
 {
@@ -54,10 +55,10 @@ API_CLASS(Static) class FLAXENGINE_API LogContext
     API_FUNCTION() static LogContextData Get();
 
     /// <summary>
-    /// Returns a string which represents the current log context on the stack.
+    /// Prints the current log context to the log. Does nothing it 
     /// </summary>
-    /// <returns>The formatted string representing the current log context.</returns>
+    /// <param name="verbosity">The verbosity of the log.</param>
-    API_FUNCTION() static String GetInfo();
+    API_FUNCTION() static void Print(LogType verbosity);
 };
 
 /// <summary>

Source/Engine/Core/Math/Quaternion.cpp

@@ -542,10 +542,8 @@ void Quaternion::RotationYawPitchRoll(float yaw, float pitch, float roll, Quater
 Quaternion Quaternion::GetRotationFromNormal(const Vector3& normal, const Transform& reference)
 {
     Float3 up = reference.GetUp();
-    const float dot = Vector3::Dot(normal, up);
+    const Real dot = Vector3::Dot(normal, up);
     if (Math::NearEqual(Math::Abs(dot), 1))
-    {
         up = reference.GetRight();
-    }
     return Quaternion::LookRotation(normal, up);
 }

Source/Engine/Engine/NativeInterop.Marshallers.cs

@@ -15,8 +15,8 @@ namespace FlaxEngine.Interop
 #if FLAX_EDITOR
     [HideInEditor]
 #endif
-    [CustomMarshaller(typeof(object), MarshalMode.ManagedToUnmanagedIn, typeof(ManagedHandleMarshaller.ManagedToNative))]
+    [CustomMarshaller(typeof(object), MarshalMode.ManagedToUnmanagedIn, typeof(ManagedHandleMarshaller.ManagedToNativeState))]
-    [CustomMarshaller(typeof(object), MarshalMode.UnmanagedToManagedOut, typeof(ManagedHandleMarshaller.ManagedToNative))]
+    [CustomMarshaller(typeof(object), MarshalMode.UnmanagedToManagedOut, typeof(ManagedHandleMarshaller.ManagedToNativeState))]
     [CustomMarshaller(typeof(object), MarshalMode.ElementIn, typeof(ManagedHandleMarshaller.ManagedToNative))]
     [CustomMarshaller(typeof(object), MarshalMode.ManagedToUnmanagedOut, typeof(ManagedHandleMarshaller.NativeToManaged))]
     [CustomMarshaller(typeof(object), MarshalMode.UnmanagedToManagedIn, typeof(ManagedHandleMarshaller.NativeToManaged))]
@@ -31,7 +31,20 @@ namespace FlaxEngine.Interop
 #endif
         public static class NativeToManaged
         {
-            public static object ConvertToManaged(IntPtr unmanaged) => unmanaged == IntPtr.Zero ? null : ManagedHandle.FromIntPtr(unmanaged).Target;
+            public static object ConvertToManaged(IntPtr unmanaged)
+            {
+                if (unmanaged == IntPtr.Zero)
+                    return null;
+                object managed = ManagedHandle.FromIntPtr(unmanaged).Target;
+                if (managed is ManagedArray managedArray)
+                {
+                    var managedArrayHandle = ManagedHandle.Alloc(managedArray, GCHandleType.Normal);
+                    managed = NativeInterop.MarshalToManaged((IntPtr)managedArrayHandle, managedArray.ArrayType);
+                    managedArrayHandle.Free();
+                }
+                return managed;
+            }
+
             public static IntPtr ConvertToUnmanaged(object managed) => managed != null ? ManagedHandle.ToIntPtr(managed, GCHandleType.Weak) : IntPtr.Zero;
 
             public static void Free(IntPtr unmanaged)
@@ -40,6 +53,52 @@ namespace FlaxEngine.Interop
             }
         }
 
+
+#if FLAX_EDITOR
+        [HideInEditor]
+#endif
+        public struct ManagedToNativeState
+        {
+            ManagedArray managedArray;
+            IntPtr handle;
+
+            public void FromManaged(object managed)
+            {
+                if (managed == null)
+                    return;
+                if (managed is Array arr)
+                {
+                    var type = managed.GetType();
+                    var elementType = type.GetElementType();
+                    if (NativeInterop.ArrayFactory.GetMarshalledType(elementType) == elementType)
+                    {
+                        // Use pooled managed array wrapper to be passed around as handle to it
+                        (ManagedHandle tmp, managedArray) = ManagedArray.WrapPooledArray(arr);
+                        handle = ManagedHandle.ToIntPtr(tmp);
+                    }
+                    else
+                    {
+                        // Convert array contents to be properly accessed by the native code (as GCHandles array)
+                        managedArray = NativeInterop.ManagedArrayToGCHandleWrappedArray(arr);
+                        handle = ManagedHandle.ToIntPtr(ManagedHandle.Alloc(managedArray));
+                        managedArray = null; // It's not pooled
+                    }
+                }
+                else
+                    handle = ManagedHandle.ToIntPtr(managed, GCHandleType.Weak);
+            }
+
+            public IntPtr ToUnmanaged()
+            {
+                return handle;
+            }
+
+            public void Free()
+            {
+                managedArray?.FreePooled();
+            }
+        }
+
 #if FLAX_EDITOR
         [HideInEditor]
 #endif
@@ -50,12 +109,6 @@ namespace FlaxEngine.Interop
 
             public static void Free(IntPtr unmanaged)
             {
-                // This is a weak handle, no need to free it
-                /*
-                if (unmanaged == IntPtr.Zero)
-                    return;
-                ManagedHandle.FromIntPtr(unmanaged).Free();
-                */
             }
         }
 
@@ -342,6 +395,7 @@ namespace FlaxEngine.Interop
         {
             public static Dictionary<T, U> ConvertToManaged(IntPtr unmanaged) => DictionaryMarshaller<T, U>.ToManaged(unmanaged);
             public static IntPtr ConvertToUnmanaged(Dictionary<T, U> managed) => DictionaryMarshaller<T, U>.ToNative(managed, GCHandleType.Weak);
+
             public static void Free(IntPtr unmanaged)
             {
                 //DictionaryMarshaller<T, U>.Free(unmanaged); // No need to free weak handles
@@ -614,6 +668,7 @@ namespace FlaxEngine.Interop
         {
             public static string ConvertToManaged(IntPtr unmanaged) => ManagedString.ToManaged(unmanaged);
             public static unsafe IntPtr ConvertToUnmanaged(string managed) => managed == null ? IntPtr.Zero : ManagedHandle.ToIntPtr(managed, GCHandleType.Weak);
+
             public static void Free(IntPtr unmanaged)
             {
                 //ManagedString.Free(unmanaged); // No need to free weak handles

Source/Engine/Level/Prefabs/PrefabManager.cpp

@@ -14,6 +14,7 @@
 #include "Engine/Core/Collections/CollectionPoolCache.h"
 #include "Engine/Profiler/ProfilerCPU.h"
 #include "Engine/Core/Cache.h"
+#include "Engine/Core/LogContext.h"
 #include "Engine/Debug/Exceptions/ArgumentException.h"
 #include "Engine/Engine/EngineService.h"
 #include "Engine/Scripting/Script.h"
@@ -122,6 +123,7 @@ Actor* PrefabManager::SpawnPrefab(Prefab* prefab, const Transform& transform, Ac
     }
     auto& data = *prefab->Data;
     SceneObjectsFactory::Context context(modifier.Value);
+    LogContextScope logContext(prefabId);
 
     // Deserialize prefab objects
     auto prevIdMapping = Scripting::ObjectsLookupIdMapping.Get();

Source/Engine/Networking/NetworkReplicator.cpp

@@ -1302,6 +1302,11 @@ bool NetworkReplicator::HasObject(const ScriptingObject* obj)
     return false;
 }
 
+void NetworkReplicator::MapObjectId(Guid& objectId)
+{
+    IdsRemappingTable.TryGet(objectId, objectId);
+}
+
 ScriptingObject* NetworkReplicator::ResolveForeignObject(Guid objectId)
 {
     if (const auto& object = ResolveObject(objectId))

Source/Engine/Networking/NetworkReplicator.h

@@ -116,6 +116,12 @@ public:
     /// <param name="obj">The network object.</param>
     /// <returns>True if object exists in networking, otherwise false.</returns>
     API_FUNCTION() static bool HasObject(const ScriptingObject* obj);
+
+    /// <summary>
+    /// Maps object ID into server or client ID (depending on the source ID). Leaves source value unchanged if that specific ID is unused.
+    /// </summary>
+    /// <param name="objectId">The network object identifier to map. Contains result ID once the method completes.</param>
+    API_FUNCTION() static void MapObjectId(API_PARAM(Ref) Guid& objectId);
 	
     /// <summary>
     /// Resolves foreign Guid into a local ScriptingObject

Source/Engine/Physics/Physics.cpp

@@ -494,28 +494,28 @@ void PhysicsScene::CollectResults()
 bool PhysicsScene::LineCast(const Vector3& start, const Vector3& end, uint32 layerMask, bool hitTriggers)
 {
     Vector3 directionToEnd = end - start;
-    const float distanceToEnd = directionToEnd.Length();
+    const Real distanceToEnd = directionToEnd.Length();
     if (distanceToEnd >= ZeroTolerance)
         directionToEnd /= distanceToEnd;
-    return PhysicsBackend::RayCast(_scene, start, directionToEnd, distanceToEnd, layerMask, hitTriggers);
+    return PhysicsBackend::RayCast(_scene, start, directionToEnd, (float)distanceToEnd, layerMask, hitTriggers);
 }
 
 bool PhysicsScene::LineCast(const Vector3& start, const Vector3& end, RayCastHit& hitInfo, uint32 layerMask, bool hitTriggers)
 {
     Vector3 directionToEnd = end - start;
-    const float distanceToEnd = directionToEnd.Length();
+    const Real distanceToEnd = directionToEnd.Length();
     if (distanceToEnd >= ZeroTolerance)
         directionToEnd /= distanceToEnd;
-    return PhysicsBackend::RayCast(_scene, start, directionToEnd, hitInfo, distanceToEnd, layerMask, hitTriggers);
+    return PhysicsBackend::RayCast(_scene, start, directionToEnd, hitInfo, (float)distanceToEnd, layerMask, hitTriggers);
 }
 
 bool PhysicsScene::LineCastAll(const Vector3& start, const Vector3& end, Array<RayCastHit>& results, uint32 layerMask, bool hitTriggers)
 {
     Vector3 directionToEnd = end - start;
-    const float distanceToEnd = directionToEnd.Length();
+    const Real distanceToEnd = directionToEnd.Length();
     if (distanceToEnd >= ZeroTolerance)
         directionToEnd /= distanceToEnd;
-    return PhysicsBackend::RayCastAll(_scene, start, directionToEnd, results, distanceToEnd, layerMask, hitTriggers);
+    return PhysicsBackend::RayCastAll(_scene, start, directionToEnd, results, (float)distanceToEnd, layerMask, hitTriggers);
 }
 
 bool PhysicsScene::RayCast(const Vector3& origin, const Vector3& direction, const float maxDistance, uint32 layerMask, bool hitTriggers)

Source/Engine/Render2D/Font.cpp

@@ -339,11 +339,10 @@ int32 Font::HitTestText(const StringView& text, const Float2& location, const Te
     float baseLinesDistance = static_cast<float>(_height) * layout.BaseLinesGapScale * scale;
 
     // Offset position to match lines origin space
-    Float2 rootOffset = layout.Bounds.Location + lines.First().Location;
+    Float2 testPoint = location - layout.Bounds.Location;
-    Float2 testPoint = location - rootOffset;
 
     // Get line which may intersect with the position (it's possible because lines have fixed height)
-    int32 lineIndex = Math::Clamp(Math::FloorToInt(testPoint.Y / baseLinesDistance), 0, lines.Count() - 1);
+    int32 lineIndex = Math::Clamp(Math::FloorToInt((testPoint.Y - lines.First().Location.Y) / baseLinesDistance), 0, lines.Count() - 1);
     const FontLineCache& line = lines[lineIndex];
     float x = line.Location.X;
 
@@ -411,7 +410,6 @@ Float2 Font::GetCharPosition(const StringView& text, int32 index, const TextLayo
     ASSERT(lines.HasItems());
     float scale = layout.Scale / FontManager::FontScale;
     float baseLinesDistance = static_cast<float>(_height) * layout.BaseLinesGapScale * scale;
-    Float2 rootOffset = layout.Bounds.Location + lines.First().Location;
 
     // Find line with that position
     FontCharacterEntry previous;
@@ -423,7 +421,7 @@ Float2 Font::GetCharPosition(const StringView& text, int32 index, const TextLayo
         // Check if desire position is somewhere inside characters in line range
         if (Math::IsInRange(index, line.FirstCharIndex, line.LastCharIndex))
         {
-            float x = line.Location.X;
+            Float2 charPos = line.Location;
 
             // Check all characters in the line
             for (int32 currentIndex = line.FirstCharIndex; currentIndex < index; currentIndex++)
@@ -436,21 +434,21 @@ Float2 Font::GetCharPosition(const StringView& text, int32 index, const TextLayo
                 // Apply kerning
                 if (!isWhitespace && previous.IsValid)
                 {
-                    x += entry.Font->GetKerning(previous.Character, entry.Character);
+                    charPos.X += entry.Font->GetKerning(previous.Character, entry.Character);
                 }
                 previous = entry;
 
                 // Move
-                x += entry.AdvanceX * scale;
+                charPos.X += entry.AdvanceX * scale;
             }
 
             // Upper left corner of the character
-            return rootOffset + Float2(x, static_cast<float>(lineIndex * baseLinesDistance));
+            return layout.Bounds.Location + charPos;
         }
     }
 
     // Position after last character in the last line
-    return rootOffset + Float2(lines.Last().Size.X, static_cast<float>((lines.Count() - 1) * baseLinesDistance));
+    return layout.Bounds.Location + lines.Last().Location + Float2(lines.Last().Size.X, 0.0f);
 }
 
 void Font::FlushFaceSize() const

Source/Engine/Render2D/FontReference.cs

@@ -90,7 +90,7 @@ namespace FlaxEngine
         /// <summary>
         /// The size of the font characters.
         /// </summary>
-        [EditorOrder(10), Limit(1, 500, 0.1f), Tooltip("The size of the font characters.")]
+        [EditorOrder(10), Limit(1, 500, 0.5f), Tooltip("The size of the font characters.")]
         public float Size
         {
             get => _size;

Source/Engine/Render2D/Render2D.cpp

@@ -841,10 +841,11 @@ void Render2D::PushClip(const Rectangle& clipRect)
 {
     RENDER2D_CHECK_RENDERING_STATE;
 
+    const auto& mask = ClipLayersStack.Peek();
     RotatedRectangle clipRectTransformed;
     ApplyTransform(clipRect, clipRectTransformed);
-    const Rectangle bounds = Rectangle::Shared(clipRectTransformed.ToBoundingRect(), ClipLayersStack.Peek().Bounds);
+    const Rectangle bounds = Rectangle::Shared(clipRectTransformed.ToBoundingRect(), mask.Bounds);
-    ClipLayersStack.Push({ clipRectTransformed, bounds });
+    ClipLayersStack.Push({ RotatedRectangle::Shared(clipRectTransformed, mask.Bounds), bounds });
 
     OnClipScissors();
 }

Source/Engine/Render2D/RotatedRectangle.h

@@ -10,7 +10,6 @@
 struct RotatedRectangle
 {
 public:
-
     /// <summary>
     /// The transformed top left corner.
     /// </summary>
@@ -27,7 +26,6 @@ public:
     Float2 ExtentY;
 
 public:
-
     /// <summary>
     /// Initializes a new instance of the <see cref="RotatedRectangle"/> struct.
     /// </summary>
@@ -60,7 +58,6 @@ public:
     }
 
 public:
-
     /// <summary>
     /// Convert rotated rectangle to the axis-aligned rectangle that builds rotated rectangle bounding box.
     /// </summary>
@@ -95,8 +92,24 @@ public:
         return false;
     }
 
-public:
+    /// <summary>
+    /// Calculates a rectangle that contains the shared part of both rectangles.
+    /// </summary>
+    /// <param name="a">The first rectangle.</param>
+    /// <param name="b">The second rectangle.</param>
+    /// <returns>Rectangle that contains shared part of a and b rectangles.</returns>
+    static RotatedRectangle Shared(const RotatedRectangle& a, const Rectangle& b)
+    {
+        // Clip the rotated rectangle bounds within the given AABB
+        RotatedRectangle result = a;
+        result.TopLeft = Float2::Max(a.TopLeft, b.GetTopLeft());
+        // TODO: do a little better math below (in case of actually rotated rectangle)
+        result.ExtentX.X = Math::Min(result.TopLeft.X + result.ExtentX.X, b.GetRight()) - result.TopLeft.X;
+        result.ExtentY.Y = Math::Min(result.TopLeft.Y + result.ExtentY.Y, b.GetBottom()) - result.TopLeft.Y;
+        return result;
+    }
 
+public:
     bool operator ==(const RotatedRectangle& other) const
     {
         return

Source/Engine/Render2D/SpriteAtlas.cs

@@ -1,10 +1,11 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
 using System;
+using System.Runtime.CompilerServices;
 
 namespace FlaxEngine
 {
-    partial struct SpriteHandle
+    partial struct SpriteHandle : IEquatable<SpriteHandle>
     {
         /// <summary>
         /// Invalid sprite handle.
@@ -107,5 +108,53 @@ namespace FlaxEngine
                 Atlas.SetSprite(Index, ref sprite);
             }
         }
+
+        /// <summary>
+        /// Tests for equality between two objects.
+        /// </summary>
+        /// <param name="left">The first value to compare.</param>
+        /// <param name="right">The second value to compare.</param>
+        /// <returns><c>true</c> if <paramref name="left" /> has the same value as <paramref name="right" />; otherwise, <c>false</c>.</returns>
+        public static bool operator ==(SpriteHandle left, SpriteHandle right)
+        {
+            return left.Index == right.Index && left.Atlas == right.Atlas;
+        }
+
+        /// <summary>
+        /// Tests for inequality between two objects.
+        /// </summary>
+        /// <param name="left">The first value to compare.</param>
+        /// <param name="right">The second value to compare.</param>
+        /// <returns><c>true</c> if <paramref name="left" /> has a different value than <paramref name="right" />; otherwise, <c>false</c>.</returns>
+        public static bool operator !=(SpriteHandle left, SpriteHandle right)
+        {
+            return left.Index != right.Index || left.Atlas != right.Atlas;
+        }
+
+        /// <inheritdoc />
+        public bool Equals(SpriteHandle other)
+        {
+            return Index == other.Index && Atlas == other.Atlas;
+        }
+
+        /// <inheritdoc />
+        public override bool Equals(object obj)
+        {
+            return obj is SpriteHandle other && Equals(other);
+        }
+
+        /// <inheritdoc />
+        public override int GetHashCode()
+        {
+            return HashCode.Combine(Atlas, Index);
+        }
+
+        /// <inheritdoc />
+        public override string ToString()
+        {
+            if (Atlas)
+                return $"{System.IO.Path.GetFileNameWithoutExtension(Atlas.Path)}[{Index}]";
+            return "Invalid";
+        }
     }
 }

Source/Engine/Renderer/ProbesRenderer.cpp

@@ -318,6 +318,11 @@ void ProbesRendererService::Update()
     // Calculate time delta since last update
     auto timeNow = Time::Update.UnscaledTime;
     auto timeSinceUpdate = timeNow - _lastProbeUpdate;
+    if (timeSinceUpdate < 0)
+    {
+        _lastProbeUpdate = timeNow;
+        timeSinceUpdate = 0;
+    }
 
     // Check if render job is done
     if (isUpdateSynced())
@@ -351,8 +356,9 @@ void ProbesRendererService::Update()
         auto dt = (float)Time::Update.UnscaledDeltaTime.GetTotalSeconds();
         for (int32 i = 0; i < _probesToBake.Count(); i++)
         {
-            _probesToBake[i].Timeout -= dt;
+            auto& e = _probesToBake[i];
-            if (_probesToBake[i].Timeout <= 0)
+            e.Timeout -= dt;
+            if (e.Timeout <= 0)
             {
                 firstValidEntryIndex = i;
                 break;
@@ -417,6 +423,9 @@ void ProbesRenderer::OnRender(RenderTask* task, GPUContext* context)
         if (_current.Actor == nullptr)
         {
             // Probe has been unlinked (or deleted)
+            _task->Enabled = false;
+            _updateFrameNumber = 0;
+            _current.Type = EntryType::Invalid;
             return;
         }
         break;

Source/Engine/Renderer/ProbesRenderer.h

@@ -28,21 +28,9 @@ public:
 
     struct Entry
     {
-        EntryType Type;
+        EntryType Type = EntryType::Invalid;
         ScriptingObjectReference<Actor> Actor;
-        float Timeout;
+        float Timeout = 0.0f;
-
-        Entry()
-        {
-            Type = EntryType::Invalid;
-        }
-
-        Entry(const Entry& other)
-        {
-            Type = other.Type;
-            Actor = other.Actor;
-            Timeout = other.Timeout;
-        }
 
         bool UseTextureData() const;
         int32 GetResolution() const;

Source/Engine/Scripting/Scripting.cpp

@@ -887,7 +887,8 @@ ScriptingObject* Scripting::FindObject(Guid id, const MClass* type)
         // Check type
         if (!type || result->Is(type))
             return result;
-        LOG(Warning, "Found scripting object with ID={0} of type {1} that doesn't match type {2}. {3}", id, String(result->GetType().Fullname), String(type->GetFullName()), LogContext::GetInfo());
+        LOG(Warning, "Found scripting object with ID={0} of type {1} that doesn't match type {2}", id, String(result->GetType().Fullname), String(type->GetFullName()));
+        LogContext::Print(LogType::Warning);
         return nullptr;
     }
 
@@ -906,7 +907,8 @@ ScriptingObject* Scripting::FindObject(Guid id, const MClass* type)
             return asset;
     }
 
-    LOG(Warning, "Unable to find scripting object with ID={0}. Required type {1}. {2}", id, String(type->GetFullName()), LogContext::GetInfo());
+    LOG(Warning, "Unable to find scripting object with ID={0}. Required type {1}", id, String(type->GetFullName()));
+    LogContext::Print(LogType::Warning);
     return nullptr;
 }
 

Source/Engine/Scripting/ScriptingObject.cpp

@@ -737,7 +737,10 @@ DEFINE_INTERNAL_CALL(MObject*) ObjectInternal_FindObject(Guid* id, MTypeObject*
         if (klass && !obj->Is(klass))
         {
             if (!skipLog)
-                LOG(Warning, "Found scripting object with ID={0} of type {1} that doesn't match type {2}. {3}", *id, String(obj->GetType().Fullname), String(klass->GetFullName()), LogContext::GetInfo());
+            {
+                LOG(Warning, "Found scripting object with ID={0} of type {1} that doesn't match type {2}", *id, String(obj->GetType().Fullname), String(klass->GetFullName()));
+                LogContext::Print(LogType::Warning);
+            }
             return nullptr;
         }
         return obj->GetOrCreateManagedInstance();
@@ -746,9 +749,10 @@ DEFINE_INTERNAL_CALL(MObject*) ObjectInternal_FindObject(Guid* id, MTypeObject*
     if (!skipLog)
     {
         if (klass)
-            LOG(Warning, "Unable to find scripting object with ID={0}. Required type {1}. {2}", *id, String(klass->GetFullName()), LogContext::GetInfo());
+            LOG(Warning, "Unable to find scripting object with ID={0} of type {1}", *id, String(klass->GetFullName()));
         else
             LOG(Warning, "Unable to find scripting object with ID={0}", *id);
+        LogContext::Print(LogType::Warning);
     }
     return nullptr;
 }

Source/Engine/Tools/MaterialGenerator/MaterialGenerator.Material.cpp

@@ -183,11 +183,15 @@ void MaterialGenerator::ProcessGroupMaterial(Box* box, Node* node, Value& value)
         break;
     // Pre-skinned Local Position
     case 13:
-        value = _treeType == MaterialTreeType::VertexShader ? Value(VariantType::Float3, TEXT("input.PreSkinnedPosition")) : Value::Zero;
+        value = Value(VariantType::Float3, TEXT("input.PreSkinnedPosition"));
+        if (_treeType != MaterialTreeType::VertexShader)
+            value = VsToPs(node, box).AsFloat3();
         break;
     // Pre-skinned Local Normal
     case 14:
-        value = _treeType == MaterialTreeType::VertexShader ? Value(VariantType::Float3, TEXT("input.PreSkinnedNormal")) : Value::Zero;
+        value = Value(VariantType::Float3, TEXT("input.PreSkinnedNormal"));
+        if (_treeType != MaterialTreeType::VertexShader)
+            value = VsToPs(node, box).AsFloat3();
         break;
     // Depth
     case 15:
@@ -211,38 +215,8 @@ void MaterialGenerator::ProcessGroupMaterial(Box* box, Node* node, Value& value)
         break;
     // Interpolate VS To PS
     case 20:
-    {
+        value = VsToPs(node, node->GetBox(0));
-        const auto input = node->GetBox(0);
-
-        // If used in VS then pass the value from the input box
-        if (_treeType == MaterialTreeType::VertexShader)
-        {
-            value = tryGetValue(input, Value::Zero).AsFloat4();
-            break;
-        }
-
-        // Check if can use more interpolants
-        if (_vsToPsInterpolants.Count() == 16)
-        {
-            OnError(node, box, TEXT("Too many VS to PS interpolants used."));
-            value = Value::Zero;
-            break;
-        }
-
-        // Check if can use interpolants
-        const auto layer = GetRootLayer();
-        if (!layer || layer->Domain == MaterialDomain::Decal || layer->Domain == MaterialDomain::PostProcess)
-        {
-            OnError(node, box, TEXT("VS to PS interpolants are not supported in Decal or Post Process materials."));
-            value = Value::Zero;
-            break;
-        }
-
-        // Indicate the interpolator slot usage
-        value = Value(VariantType::Float4, String::Format(TEXT("input.CustomVSToPS[{0}]"), _vsToPsInterpolants.Count()));
-        _vsToPsInterpolants.Add(input);
         break;
-    }
     // Terrain Holes Mask
     case 21:
     {

Source/Engine/Tools/MaterialGenerator/MaterialGenerator.cpp

@@ -832,4 +832,32 @@ void MaterialGenerator::WriteCustomGlobalCode(const Array<const MaterialGraph::N
     }
 }
 
+ShaderGenerator::Value MaterialGenerator::VsToPs(Node* node, Box* input)
+{
+    // If used in VS then pass the value from the input box
+    if (_treeType == MaterialTreeType::VertexShader)
+    {
+        return tryGetValue(input, Value::Zero).AsFloat4();
+    }
+
+    // Check if can use more interpolants
+    if (_vsToPsInterpolants.Count() == 16)
+    {
+        OnError(node, input, TEXT("Too many VS to PS interpolants used."));
+        return Value::Zero;
+    }
+
+    // Check if can use interpolants
+    const auto layer = GetRootLayer();
+    if (!layer || layer->Domain == MaterialDomain::Decal || layer->Domain == MaterialDomain::PostProcess)
+    {
+        OnError(node, input, TEXT("VS to PS interpolants are not supported in Decal or Post Process materials."));
+        return Value::Zero;
+    }
+
+    // Indicate the interpolator slot usage
+    _vsToPsInterpolants.Add(input);
+    return Value(VariantType::Float4, String::Format(TEXT("input.CustomVSToPS[{0}]"), _vsToPsInterpolants.Count() - 1));
+}
+
 #endif

Source/Engine/Tools/MaterialGenerator/MaterialGenerator.h

@@ -205,6 +205,7 @@ private:
     MaterialValue AccessParticleAttribute(Node* caller, const StringView& name, ParticleAttributeValueTypes valueType, const Char* index = nullptr, ParticleAttributeSpace space = ParticleAttributeSpace::AsIs);
     void prepareLayer(MaterialLayer* layer, bool allowVisibleParams);
     void WriteCustomGlobalCode(const Array<const MaterialGraph::Node*, InlinedAllocation<8>>& nodes, int32 templateInputsMapping);
+    Value VsToPs(Node* node, Box* input);
 
 public:
 

Source/Engine/UI/GUI/Common/Button.cs

@@ -8,7 +8,7 @@ namespace FlaxEngine.GUI
     /// Button control
     /// </summary>
     [ActorToolbox("GUI")]
-    public class Button : ContainerControl
+    public class Button : Label
     {
         /// <summary>
         /// The default height for the buttons.
@@ -20,65 +20,16 @@ namespace FlaxEngine.GUI
         /// </summary>
         protected bool _isPressed;
 
-        /// <summary>
-        /// The font.
-        /// </summary>
-        protected FontReference _font;
-
-        /// <summary>
-        /// The text.
-        /// </summary>
-        protected LocalizedString _text = new LocalizedString();
-
-        /// <summary>
-        /// Button text property.
-        /// </summary>
-        [EditorOrder(10), Tooltip("The button label text.")]
-        public LocalizedString Text
-        {
-            get => _text;
-            set => _text = value;
-        }
-
-        /// <summary>
-        /// Gets or sets the font used to draw button text.
-        /// </summary>
-        [EditorDisplay("Text Style"), EditorOrder(2022), ExpandGroups]
-        public FontReference Font
-        {
-            get => _font;
-            set => _font = value;
-        }
-
         /// <summary>
         /// Gets or sets the custom material used to render the text. It must has domain set to GUI and have a public texture parameter named Font used to sample font atlas texture with font characters data.
+        /// [Deprecated on 18.09.2024, expires on 18.09.2026]
         /// </summary>
-        [EditorDisplay("Text Style"), EditorOrder(2021), Tooltip("Custom material used to render the text. It must has domain set to GUI and have a public texture parameter named Font used to sample font atlas texture with font characters data.")]
+        [Serialize, Obsolete("Use Material property instead."), NoUndo]
-        public MaterialBase TextMaterial { get; set; }
+        public MaterialBase TextMaterial
-
+        {
-        /// <summary>
+            get => Material;
-        /// Gets or sets the color used to draw button text.
+            set => Material = value;
-        /// </summary>
+        }
-        [EditorDisplay("Text Style"), EditorOrder(2020)]
-        public Color TextColor;
-
-        /// <summary>
-        /// Gets or sets the horizontal text alignment within the control bounds.
-        /// </summary>
-        [EditorDisplay("Text Style"), EditorOrder(2027)]
-        public TextAlignment HorizontalAlignment { get; set; } = TextAlignment.Center;
-
-        /// <summary>
-        /// Gets or sets the vertical text alignment within the control bounds.
-        /// </summary>
-        [EditorDisplay("Text Style"), EditorOrder(2028)]
-        public TextAlignment VerticalAlignment { get; set; } = TextAlignment.Center;
-
-        /// <summary>
-        /// Gets or sets the brush used for background drawing.
-        /// </summary>
-        [EditorDisplay("Background Style"), EditorOrder(1999), Tooltip("The brush used for background drawing."), ExpandGroups]
-        public IBrush BackgroundBrush { get; set; }
 
         /// <summary>
         /// Gets or sets the background color when button is highlighted.
@@ -97,7 +48,7 @@ namespace FlaxEngine.GUI
         /// </summary>
         [EditorDisplay("Border Style"), EditorOrder(2010), ExpandGroups]
         public bool HasBorder { get; set; } = true;
-        
+
         /// <summary>
         /// Gets or sets the border thickness.
         /// </summary>
@@ -165,6 +116,7 @@ namespace FlaxEngine.GUI
         public Button(float x, float y, float width = 120, float height = DefaultHeight)
         : base(x, y, width, height)
         {
+            AutoFocus = true;
             var style = Style.Current;
             if (style != null)
             {
@@ -242,17 +194,14 @@ namespace FlaxEngine.GUI
         /// <inheritdoc />
         public override void DrawSelf()
         {
-            // Cache data
             Rectangle clientRect = new Rectangle(Float2.Zero, Size);
             bool enabled = EnabledInHierarchy;
             Color backgroundColor = BackgroundColor;
             Color borderColor = BorderColor;
-            Color textColor = TextColor;
             if (!enabled)
             {
                 backgroundColor *= 0.5f;
                 borderColor *= 0.5f;
-                textColor *= 0.6f;
             }
             else if (_isPressed)
             {
@@ -274,7 +223,10 @@ namespace FlaxEngine.GUI
                 Render2D.DrawRectangle(clientRect, borderColor, BorderThickness);
 
             // Draw text
-            Render2D.DrawText(_font?.GetFont(), TextMaterial, _text, clientRect, textColor, HorizontalAlignment, VerticalAlignment);
+            backgroundColor = BackgroundColor;
+            BackgroundColor = Color.Transparent; // Skip background drawing in Control
+            base.DrawSelf();
+            BackgroundColor = backgroundColor;
         }
 
         /// <inheritdoc />
@@ -339,7 +291,7 @@ namespace FlaxEngine.GUI
                 OnClick();
                 return true;
             }
-            
+
             if (button == MouseButton.Left && !_isPressed)
             {
                 OnPressBegin();

Source/Engine/UI/GUI/Common/Image.cs

@@ -135,5 +135,14 @@ namespace FlaxEngine.GUI
 
             return false;
         }
+
+        /// <inheritdoc />
+        public override void OnSubmit()
+        {
+            base.OnSubmit();
+
+            // Execute default user interaction via mouse click
+            Clicked?.Invoke(this, MouseButton.Left);
+        }
     }
 }

Source/Engine/UI/GUI/Common/Label.cs

@@ -42,6 +42,7 @@ namespace FlaxEngine.GUI
         private bool _autoFitText;
         private Float2 _textSize;
         private Float2 _autoFitTextRange = new Float2(0.1f, 100.0f);
+        private Margin _margin;
 
         /// <summary>
         /// The font.
@@ -57,9 +58,9 @@ namespace FlaxEngine.GUI
             get => _text;
             set
             {
-                if (_text != value)
+                _text = value;
+                if (_autoWidth || _autoHeight || _autoFitText)
                 {
-                    _text = value;
                     _textSize = Float2.Zero;
                     PerformLayout();
                 }
@@ -129,15 +130,11 @@ namespace FlaxEngine.GUI
             get => _font;
             set
             {
-                if (_font != value)
+                _font = value;
+                if (_autoWidth || _autoHeight || _autoFitText)
                 {
-                    _font = value;
+                    _textSize = Float2.Zero;
-
+                    PerformLayout();
-                    if (_autoWidth || _autoHeight || _autoFitText)
-                    {
-                        _textSize = Float2.Zero;
-                        PerformLayout();
-                    }
                 }
             }
         }
@@ -152,7 +149,18 @@ namespace FlaxEngine.GUI
         /// Gets or sets the margin for the text within the control bounds.
         /// </summary>
         [EditorOrder(70), Tooltip("The margin for the text within the control bounds.")]
-        public Margin Margin { get; set; }
+        public Margin Margin
+        {
+            get => _margin;
+            set
+            {
+                _margin = value;
+                if (_autoWidth || _autoHeight)
+                {
+                    PerformLayout();
+                }
+            }
+        }
 
         /// <summary>
         /// Gets or sets a value indicating whether clip text during rendering.
@@ -161,9 +169,9 @@ namespace FlaxEngine.GUI
         public bool ClipText { get; set; }
 
         /// <summary>
-        /// Gets or sets a value indicating whether set automatic width based on text contents.
+        /// Gets or sets a value indicating whether set automatic width based on text contents. Control size is modified relative to the Pivot.
         /// </summary>
-        [EditorOrder(85), DefaultValue(false), Tooltip("If checked, the control width will be based on text contents.")]
+        [EditorOrder(85), DefaultValue(false), Tooltip("If checked, the control width will be based on text contents. Control size is modified relative to the Pivot.")]
         public bool AutoWidth
         {
             get => _autoWidth;
@@ -178,9 +186,9 @@ namespace FlaxEngine.GUI
         }
 
         /// <summary>
-        /// Gets or sets a value indicating whether set automatic height based on text contents.
+        /// Gets or sets a value indicating whether set automatic height based on text contents. Control size is modified relative to the Pivot.
         /// </summary>
-        [EditorOrder(90), DefaultValue(false), Tooltip("If checked, the control height will be based on text contents.")]
+        [EditorOrder(90), DefaultValue(false), Tooltip("If checked, the control height will be based on text contents. Control size is modified relative to the Pivot.")]
         public bool AutoHeight
         {
             get => _autoHeight;
@@ -226,13 +234,8 @@ namespace FlaxEngine.GUI
         /// Initializes a new instance of the <see cref="Label"/> class.
         /// </summary>
         public Label()
-        : base(0, 0, 100, 20)
+        : this(0, 0, 100, 20)
         {
-            AutoFocus = false;
-            var style = Style.Current;
-            Font = new FontReference(style.FontMedium);
-            TextColor = style.Foreground;
-            TextColorHighlighted = style.Foreground;
         }
 
         /// <inheritdoc />
@@ -241,9 +244,12 @@ namespace FlaxEngine.GUI
         {
             AutoFocus = false;
             var style = Style.Current;
-            Font = new FontReference(style.FontMedium);
+            if (style != null)
-            TextColor = style.Foreground;
+            {
-            TextColorHighlighted = style.Foreground;
+                Font = new FontReference(style.FontMedium);
+                TextColor = style.Foreground;
+                TextColorHighlighted = style.Foreground;
+            }
         }
 
         /// <inheritdoc />
@@ -251,31 +257,24 @@ namespace FlaxEngine.GUI
         {
             base.DrawSelf();
 
-            var rect = new Rectangle(new Float2(Margin.Left, Margin.Top), Size - Margin.Size);
-
             if (ClipText)
                 Render2D.PushClip(new Rectangle(Float2.Zero, Size));
 
+            var rect = new Rectangle(new Float2(Margin.Left, Margin.Top), Size - Margin.Size);
             var color = IsMouseOver || IsNavFocused ? TextColorHighlighted : TextColor;
-
             if (!EnabledInHierarchy)
                 color *= 0.6f;
-
             var scale = 1.0f;
             var hAlignment = HorizontalAlignment;
             var wAlignment = VerticalAlignment;
-            if (_autoFitText)
+            if (_autoFitText && !_textSize.IsZero)
             {
-                if (!_textSize.IsZero)
+                scale = (rect.Size / _textSize).MinValue;
-                {
+                scale = Mathf.Clamp(scale, _autoFitTextRange.X, _autoFitTextRange.Y);
-                    scale = (rect.Size / _textSize).MinValue;
-                    scale = Mathf.Clamp(scale, _autoFitTextRange.X, _autoFitTextRange.Y);
-                }
             }
 
             Font font = GetFont();
             var text = ConvertedText();
-
             Render2D.DrawText(font, Material, text, rect, color, hAlignment, wAlignment, Wrapping, BaseLinesGapScale, scale);
 
             if (ClipText)
@@ -336,7 +335,9 @@ namespace FlaxEngine.GUI
                             size.X = _textSize.X + Margin.Width;
                         if (_autoHeight)
                             size.Y = _textSize.Y + Margin.Height;
+                        var pivotRelative = PivotRelative;
                         Size = size;
+                        PivotRelative = pivotRelative;
                     }
                 }
             }

Source/Engine/UI/GUI/Common/TextBox.cs

@@ -291,24 +291,7 @@ namespace FlaxEngine.GUI
             {
                 float alpha = Mathf.Saturate(Mathf.Cos(_animateTime * CaretFlashSpeed) * 0.5f + 0.7f);
                 alpha = alpha * alpha * alpha * alpha * alpha * alpha;
-                if (CaretPosition == 0)
+                Render2D.FillRectangle(CaretBounds, CaretColor * alpha);
-                {
-                    var bounds = CaretBounds;
-                    if (_layout.VerticalAlignment == TextAlignment.Center)
-                        bounds.Y = _layout.Bounds.Y + _layout.Bounds.Height * 0.5f - bounds.Height * 0.5f;
-                    else if (_layout.VerticalAlignment == TextAlignment.Far)
-                        bounds.Y = _layout.Bounds.Y + _layout.Bounds.Height - bounds.Height;
-
-                    if (_layout.HorizontalAlignment == TextAlignment.Center)
-                        bounds.X = _layout.Bounds.X + _layout.Bounds.Width * 0.5f - bounds.Width * 0.5f;
-                    else if (_layout.HorizontalAlignment == TextAlignment.Far)
-                        bounds.X = _layout.Bounds.X + _layout.Bounds.Width - bounds.Width;
-                    Render2D.FillRectangle(bounds, CaretColor * alpha);
-                }
-                else
-                {
-                    Render2D.FillRectangle(CaretBounds, CaretColor * alpha);
-                }
                 
             }
 

Source/Engine/UI/GUI/Control.Bounds.cs

@@ -234,6 +234,11 @@ namespace FlaxEngine.GUI
                 if (_bounds.Size.Equals(ref value))
                     return;
                 var bounds = new Rectangle(_bounds.Location, value);
+                if (_pivotRelativeSizing)
+                {
+                    var delta = _bounds.Size - value;
+                    bounds.Location += delta * Pivot;
+                }
                 SetBounds(ref bounds);
             }
         }
@@ -566,7 +571,7 @@ namespace FlaxEngine.GUI
         }
 
         /// <summary>
-        /// Sets the anchor preset for the control. Can be use to auto-place the control for a given preset or can preserve the current control bounds.
+        /// Sets the anchor preset for the control. Can be used to auto-place the control for a given preset or can preserve the current control bounds.
         /// </summary>
         /// <param name="anchorPreset">The anchor preset to set.</param>
         /// <param name="preserveBounds">True if preserve current control bounds, otherwise will align control position accordingly to the anchor location.</param>

Source/Engine/UI/GUI/Control.cs

@@ -81,6 +81,7 @@ namespace FlaxEngine.GUI
         // Style
 
         private Color _backgroundColor = Color.Transparent;
+        private IBrush _backgroundBrush = null;
 
         // Tooltip
 
@@ -174,6 +175,25 @@ namespace FlaxEngine.GUI
             set => _backgroundColor = value;
         }
 
+        /// <summary>
+        /// Gets or sets control background brush used to fill the contents. Uses Background Color property as tint color.
+        /// </summary>
+        [EditorDisplay("Background Style"), EditorOrder(2001)]
+        public IBrush BackgroundBrush
+        {
+            get => _backgroundBrush;
+            set
+            {
+                _backgroundBrush = value;
+
+#if FLAX_EDITOR
+                // Auto-reset background color so brush is visible as it uses it for tint
+                if (value != null && _backgroundColor == Color.Transparent && FlaxEditor.CustomEditors.CustomEditor.IsSettingValue)
+                    _backgroundColor = Color.White;
+#endif
+            }
+        }
+
         /// <summary>
         /// Gets or sets the anchor preset used by the control anchors (based on <see cref="AnchorMin"/> and <see cref="AnchorMax"/>).
         /// </summary>
@@ -416,9 +436,14 @@ namespace FlaxEngine.GUI
         public virtual void Draw()
         {
             // Paint Background
-            if (_backgroundColor.A > 0.0f)
+            var rect = new Rectangle(Float2.Zero, _bounds.Size);
+            if (BackgroundBrush != null)
             {
-                Render2D.FillRectangle(new Rectangle(Float2.Zero, Size), _backgroundColor);
+                BackgroundBrush.Draw(rect, _backgroundColor);
+            }
+            else if (_backgroundColor.A > 0.0f)
+            {
+                Render2D.FillRectangle(rect, _backgroundColor);
             }
         }
 
@@ -614,6 +639,18 @@ namespace FlaxEngine.GUI
             case NavDirection.Down: return NavTargetDown;
             case NavDirection.Left: return NavTargetLeft;
             case NavDirection.Right: return NavTargetRight;
+            case NavDirection.Next:
+                if (NavTargetRight != null)
+                    return NavTargetRight;
+                if (NavTargetDown != null)
+                    return NavTargetDown;
+                return null;
+            case NavDirection.Previous:
+                if (NavTargetLeft != null)
+                    return NavTargetLeft;
+                if (NavTargetUp != null)
+                    return NavTargetUp;
+                return null;
             default: return null;
             }
         }

Source/Engine/UI/GUI/Panels/HorizontalPanel.cs

@@ -22,6 +22,8 @@ namespace FlaxEngine.GUI
             base.PerformLayoutBeforeChildren();
 
             // Pre-set height of all controls
+            if (!ControlChildSize)
+                return;
             float h = Height - _margin.Height;
             for (int i = 0; i < _children.Count; i++)
             {
@@ -40,6 +42,7 @@ namespace FlaxEngine.GUI
             float left = _margin.Left;
             float right = _margin.Right;
             float h = Height - _margin.Height;
+            float maxHeight = h;
             bool hasAnyLeft = false, hasAnyRight = false;
             for (int i = 0; i < _children.Count; i++)
             {
@@ -47,18 +50,20 @@ namespace FlaxEngine.GUI
                 if (c.Visible)
                 {
                     var w = c.Width;
+                    var ch = ControlChildSize ? h : c.Height;
                     if (Mathf.IsZero(c.AnchorMin.X) && Mathf.IsZero(c.AnchorMax.X))
                     {
-                        c.Bounds = new Rectangle(left + _offset.X, _margin.Top + _offset.Y, w, h);
+                        c.Bounds = new Rectangle(left + _offset.X, _margin.Top + _offset.Y, w, ch);
                         left = c.Right + _spacing;
                         hasAnyLeft = true;
                     }
                     else if (Mathf.IsOne(c.AnchorMin.X) && Mathf.IsOne(c.AnchorMax.X))
                     {
                         right += w + _spacing;
-                        c.Bounds = new Rectangle(Width - right + _offset.X, _margin.Top + _offset.Y, w, h);
+                        c.Bounds = new Rectangle(Width - right + _offset.X, _margin.Top + _offset.Y, w, ch);
                         hasAnyRight = true;
                     }
+                    maxHeight = Mathf.Max(maxHeight, ch);
                 }
             }
             if (hasAnyLeft)
@@ -68,7 +73,13 @@ namespace FlaxEngine.GUI
 
             // Update size
             if (_autoSize)
-                Width = left + right;
+            {
+                var size = Size;
+                size.X = left + right;
+                if (!ControlChildSize)
+                    size.Y = maxHeight;
+                Size = size;
+            }
         }
     }
 }

Source/Engine/UI/GUI/Panels/PanelWithMargins.cs

@@ -1,5 +1,7 @@
 // Copyright (c) 2012-2024 Wojciech Figat. All rights reserved.
 
+using System.ComponentModel;
+
 namespace FlaxEngine.GUI
 {
     /// <summary>
@@ -133,7 +135,7 @@ namespace FlaxEngine.GUI
         /// <summary>
         /// Gets or sets the value indicating whenever the panel size will be based on a children dimensions.
         /// </summary>
-        [EditorOrder(30), Tooltip("If checked, the panel size will be based on a children dimensions.")]
+        [EditorOrder(30), DefaultValue(true), Tooltip("If checked, the panel size will be based on a children dimensions.")]
         public bool AutoSize
         {
             get => _autoSize;
@@ -147,6 +149,12 @@ namespace FlaxEngine.GUI
             }
         }
 
+        /// <summary>
+        /// Gets or sets the value indicating whenever the panel can resize children controls (eg. auto-fit width/height).
+        /// </summary>
+        [EditorOrder(35), DefaultValue(true), Tooltip("If checked, the panel can resize children controls (eg. auto-fit width/height).")]
+        public bool ControlChildSize { get; set; } = true;
+
         /// <summary>
         /// Gets or sets the panel area margin.
         /// </summary>

Source/Engine/UI/GUI/Panels/VerticalPanel.cs

@@ -22,6 +22,8 @@ namespace FlaxEngine.GUI
             base.PerformLayoutBeforeChildren();
 
             // Pre-set width of all controls
+            if (!ControlChildSize)
+                return;
             float w = Width - _margin.Width;
             for (int i = 0; i < _children.Count; i++)
             {
@@ -40,6 +42,7 @@ namespace FlaxEngine.GUI
             float top = _margin.Top;
             float bottom = _margin.Bottom;
             float w = Width - _margin.Width;
+            float maxWidth = w;
             bool hasAnyTop = false, hasAnyBottom = false;
             for (int i = 0; i < _children.Count; i++)
             {
@@ -47,18 +50,20 @@ namespace FlaxEngine.GUI
                 if (c.Visible)
                 {
                     var h = c.Height;
+                    var cw = ControlChildSize ? w : c.Width;
                     if (Mathf.IsZero(c.AnchorMin.Y) && Mathf.IsZero(c.AnchorMax.Y))
                     {
-                        c.Bounds = new Rectangle(_margin.Left + _offset.X, top + _offset.Y, w, h);
+                        c.Bounds = new Rectangle(_margin.Left + _offset.X, top + _offset.Y, cw, h);
                         top = c.Bottom + _spacing;
                         hasAnyTop = true;
                     }
                     else if (Mathf.IsOne(c.AnchorMin.Y) && Mathf.IsOne(c.AnchorMax.Y))
                     {
                         bottom += h + _spacing;
-                        c.Bounds = new Rectangle(_margin.Left + _offset.X, Height - bottom + _offset.Y, w, h);
+                        c.Bounds = new Rectangle(_margin.Left + _offset.X, Height - bottom + _offset.Y, cw, h);
                         hasAnyBottom = true;
                     }
+                    maxWidth = Mathf.Max(maxWidth, cw);
                 }
             }
             if (hasAnyTop)
@@ -68,7 +73,13 @@ namespace FlaxEngine.GUI
 
             // Update size
             if (_autoSize)
-                Height = top + bottom;
+            {
+                var size = Size;
+                size.Y = top + bottom;
+                if (!ControlChildSize)
+                    size.X = maxWidth;
+                Size = size;
+            }
         }
     }
 }

Source/Shaders/GUICommon.hlsl

@@ -43,13 +43,9 @@ float4 PointInParallelogram(float2 p, float2 a, float4 bc)
 void PerformClipping(float2 clipOrigin, float2 windowPos, float4 clipExtents)
 {
 #if CLIPPING_ENABLE
-
+    // Clip pixels which are outside the clipping rect
-    // Clip pixels which are outside of the clipping rect
     float4 clipTest = PointInParallelogram(windowPos, clipOrigin, clipExtents);
-
-    // Clip pixels which are outside of the clipping rect
     clip(clipTest);
-
 #endif
 }
 

Source/Tools/Flax.Build/Bindings/BindingsGenerator.CSharp.cs

@@ -1478,8 +1478,8 @@ namespace Flax.Build.Bindings
                     public static class NativeToManaged
                     {
                         public static {{classInfo.Name}} ConvertToManaged(IntPtr unmanaged) => Unsafe.As<{{classInfo.Name}}>(ManagedHandleMarshaller.NativeToManaged.ConvertToManaged(unmanaged));
-                        public static IntPtr ConvertToUnmanaged({{classInfo.Name}} managed) => ManagedHandleMarshaller.ManagedToNative.ConvertToUnmanaged(managed);
+                        public static IntPtr ConvertToUnmanaged({{classInfo.Name}} managed) => managed != null ? ManagedHandle.ToIntPtr(managed, GCHandleType.Weak) : IntPtr.Zero;
-                        public static void Free(IntPtr unmanaged) => ManagedHandleMarshaller.NativeToManaged.Free(unmanaged);
+                        public static void Free(IntPtr unmanaged) {}
                     }
                 #if FLAX_EDITOR
                     [HideInEditor]
@@ -1487,8 +1487,8 @@ namespace Flax.Build.Bindings
                     public static class ManagedToNative
                     {
                         public static {{classInfo.Name}} ConvertToManaged(IntPtr unmanaged) => Unsafe.As<{{classInfo.Name}}>(ManagedHandleMarshaller.NativeToManaged.ConvertToManaged(unmanaged));
-                        public static IntPtr ConvertToUnmanaged({{classInfo.Name}} managed) => ManagedHandleMarshaller.ManagedToNative.ConvertToUnmanaged(managed);
+                        public static IntPtr ConvertToUnmanaged({{classInfo.Name}} managed) => managed != null ? ManagedHandle.ToIntPtr(managed, GCHandleType.Weak) : IntPtr.Zero;
-                        public static void Free(IntPtr unmanaged) => ManagedHandleMarshaller.ManagedToNative.Free(unmanaged);
+                        public static void Free(IntPtr unmanaged) {}
                     }
                 #if FLAX_EDITOR
                     [HideInEditor]

Source/Tools/Flax.Build/Bindings/BindingsGenerator.Parsing.cs

@@ -242,6 +242,11 @@ namespace Flax.Build.Bindings
             }
 
             // Forward type
+            if (token.Value == "enum")
+            {
+                context.Tokenizer.SkipUntil(TokenType.Identifier);
+                token = context.Tokenizer.CurrentToken;
+            }
             if (token.Value == "class")
             {
                 context.Tokenizer.SkipUntil(TokenType.Identifier);