add: Selectable Tile Map Layer/Mouse Controlled Camera

Package/embedded/GlobalClasses/Nodes/TileMapLayers/SelectableTileMapLayer.cs

@@ -0,0 +1,42 @@
+using Godot;
+using Polonium.Attributes;
+
+namespace GlobalClasses;
+[ProxyNode]
+[GlobalClass]
+[Tool]
+public partial class SelectableTileMapLayer : TileMapLayer
+{
+    [Signal]
+    public delegate void CellSelectedEventHandler(Vector2I pos);
+
+    [Signal]
+    public delegate void CellEnteredEventHandler(Vector2I pos);
+    private Vector2I HoveredCell { get; set; } = new Vector2I(-1, -1);
+
+    public sealed override void _Process(double delta)
+    {
+        
+        Vector2 mousePos = GetGlobalMousePosition();
+        Vector2 localMousePos = ToLocal(mousePos);
+        Vector2I cell = LocalToMap(localMousePos);
+        if(cell != HoveredCell)
+        {
+            EmitSignalCellEntered(cell);
+            HoveredCell = cell;
+        }
+        __Process(delta);
+        base._Process(delta);
+    }
+    
+    public override void _UnhandledInput(InputEvent @event)
+    {
+        if (@event is InputEventMouseButton mouseEvent)
+            if (mouseEvent.ButtonIndex == MouseButton.Left && mouseEvent.Pressed)
+                EmitSignalCellSelected(HoveredCell);
+    }
+    [ProxyMethod]
+    public virtual void __Process(double delta)
+    {
+    }
+}