add: Selectable Tile Map Layer/Mouse Controlled Camera

Package/embedded/GlobalClasses/Nodes/Cameras/MouseControlledCamera.cs

@@ -0,0 +1,48 @@
+
+using Godot;
+using Polonium.Attributes;
+
+// ReSharper disable once CheckNamespace
+namespace GlobalClasses;
+[ProxyNode]
+[GlobalClass]
+[Tool]
+public partial class MouseControlledCamera : Camera2D
+{
+    private Vector2 DragStartPosition { get; set; }
+    private bool IsDragging { get; set; }
+    [Signal]
+    public delegate void ZoomInEventHandler();
+    [Signal]
+    public delegate void ZoomOutEventHandler();
+
+    [Export]
+    public MouseButton DragButton { get; set; } = MouseButton.Middle;
+
+    public override void _UnhandledInput(InputEvent @event)
+    {
+        if (@event is InputEventMouseButton mouseButtonEvent)
+        {
+            if(mouseButtonEvent.ButtonIndex == MouseButton.WheelUp)
+                EmitSignalZoomIn();
+            else if(mouseButtonEvent.ButtonIndex == MouseButton.WheelDown)
+                EmitSignalZoomOut();
+            else if (mouseButtonEvent.ButtonIndex == DragButton)
+            {
+                IsDragging = mouseButtonEvent.Pressed;
+                if(IsDragging)
+                    DragStartPosition = GetGlobalMousePosition();
+            }
+        }
+        else if (@event is InputEventMouseMotion mouseMotionEvent && IsDragging)
+        {
+            Vector2 mousePos = GetGlobalMousePosition();
+            Vector2 offset = DragStartPosition - mousePos;
+            Position += offset;
+            DragStartPosition = mousePos;
+        }
+
+
+    }
+
+}