MacOS support

App/App/SpriteKit/PieceNode.swift

@@ -76,41 +76,29 @@ class PieceNode : SKNode {
     }
     
 #if os(macOS)
-    // override public func touchesBegan(with event: NSEvent) {
+    override public func mouseDown(with event: NSEvent) {
-    //     let holder: NSView? = self.parent?.parent as? NSView
+        guard let holder = self.parent
-    //
+        else { return }
-    //     guard
+        
-    //         self.draggable,
+        let pos = event.location(in: holder)
-    //         let touch = event.touches(matching: .began, in: holder).first
+        self.dragTo(position: CGPoint(x: pos.x, y: pos.y))
-    //     else { return }
+    }
-    //
+    
-    //     let pos = touch.location(in: holder)
+    override public func mouseDragged(with event: NSEvent) {
-    //     self.position = CGPoint(x: pos.y, y: pos.y)
+        guard let holder = self.parent
-    // }
+        else { return }
-    //
+        
-    // override public func touchesMoved(with event: NSEvent) {
+        let pos = event.location(in: holder)
-    //     let holder: NSView? = self.parent?.parent as? NSView
+        self.dragTo(position: CGPoint(x: pos.x, y: pos.y))
-    //
+    }
-    //     guard
+    
-    //         self.draggable,
+    override public func mouseUp(with event: NSEvent) {
-    //         let touch = event.touches(matching: .moved, in: holder).first
+        guard let holder = self.parent
-    //     else { return }
+        else { return }
-    //
+        
-    //     let pos = touch.location(in: holder)
+        let pos = event.location(in: holder)
-    //     self.position = CGPoint(x: pos.y, y: pos.y)
+        self.releaseAt(position: CGPoint(x: pos.x, y: pos.y))
-    // }
+    }
-    //
-    // override public func touchesEnded(with event: NSEvent) {
-    //     let holder: NSView? = self.parent?.parent as? NSView
-    //
-    //     guard
-    //         self.draggable,
-    //         let touch = event.touches(matching: .ended, in: holder).first
-    //     else { return }
-    //
-    //     let pos = touch.location(in: holder)
-    //     self.position = CGPoint(x: pos.y, y: pos.y)
-    // }
 #elseif os(iOS)
     override public func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
         guard