init

src/InteractiveEditor/InteractiveEditorHandle.cs

@@ -0,0 +1,64 @@
+using Cthangover.Core.Utils;
+using Godot;
+
+namespace Cthangover.Tools.InteractiveEditor
+{
+	/// <summary>
+	/// Draggable 16x16 handle representing a collider vertex on the preview area.
+	/// Used for rect corners, circle radius marker, and polygon vertices.
+	/// Subscribes to the GuiInput C# event rather than overriding _GuiInput
+	/// for reliable event delivery in mod assemblies.
+	/// </summary>
+	public partial class InteractiveEditorHandle : ColorRect
+	{
+        /// <summary>Index of the vertex this handle represents (0-based).</summary>
+		public int VertexIndex;
+        /// <summary>Invoked during drag with the centre position of the handle in global coordinates.</summary>
+        public System.Action<Vector2> DragUpdate;
+        /// <summary>Invoked when the handle is clicked (mouse down).</summary>
+        public System.Action Clicked;
+        /// <summary>Invoked when the drag ends (mouse up). Used to sync sidebar values.</summary>
+        public System.Action DragEnd;
+
+		private bool _dragging;
+		private Vector2 _dragOffset;
+
+        /// <summary>Creates a handle with the given colour, size 16×16, and index for vertex identification.</summary>
+        public InteractiveEditorHandle(Color color, int index)
+		{
+			VertexIndex = index;
+			Size = new Vector2(16, 16);
+			Color = color;
+			MouseFilter = Control.MouseFilterEnum.Stop;
+			MouseDefaultCursorShape = Control.CursorShape.PointingHand;
+			GuiInput += OnGuiInput;
+		}
+
+		private void OnGuiInput(InputEvent @event)
+		{
+			if (@event is InputEventMouseButton mb && mb.ButtonIndex == MouseButton.Left)
+			{
+				if (mb.Pressed)
+				{
+					_dragging = true;
+					_dragOffset = GetGlobalMousePosition() - GlobalPosition;
+					GameLogger.Log("INTERACTIVE_HANDLE", $"drag start idx={VertexIndex} pos={GlobalPosition}");
+					Clicked?.Invoke();
+				}
+				else
+				{
+					_dragging = false;
+					GameLogger.Log("INTERACTIVE_HANDLE", $"drag end idx={VertexIndex}");
+					DragEnd?.Invoke();
+				}
+				AcceptEvent();
+			}
+			else if (@event is InputEventMouseMotion && _dragging)
+			{
+				var center = GlobalPosition + Size / 2;
+				GlobalPosition = GetGlobalMousePosition() - _dragOffset;
+				DragUpdate?.Invoke(center);
+			}
+		}
+	}
+}