===================================================================
--- original.js
+++ change.js
@@ -1,6 +1,86 @@
-/****
+/**** 
+* Classes
+****/ 
+var DragButton = Container.expand(function () {
+	var self = Container.call(this);
+	var buttonGraphics = self.attachAsset('button', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.isPressed = false;
+	self.down = function (x, y, obj) {
+		self.isPressed = true;
+	};
+	self.up = function (x, y, obj) {
+		self.isPressed = false;
+		if (currentDraggedTower) {
+			currentDraggedTower = null;
+		}
+	};
+	return self;
+});
+var TestTower = Container.expand(function () {
+	var self = Container.call(this);
+	var towerGraphics = self.attachAsset('testTower', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	self.isDragging = false;
+	self.down = function (x, y, obj) {
+		self.isDragging = true;
+	};
+	self.up = function (x, y, obj) {
+		self.isDragging = false;
+	};
+	return self;
+});
+
+/**** 
 * Initialize Game
-****/
+****/ 
 var game = new LK.Game({
 	backgroundColor: 0x000000 //Init game with black background 
-});
\ No newline at end of file
+});
+
+/**** 
+* Game Code
+****/ 
+var towers = [];
+var currentDraggedTower = null;
+var dragButton = null;
+// Create the drag button at the bottom of the screen
+dragButton = game.addChild(new DragButton());
+dragButton.x = 2048 / 2;
+dragButton.y = 2732 - 100;
+// Add button label
+var buttonText = new Text2('Hold to Drag Tower', {
+	size: 30,
+	fill: 0xFFFFFF
+});
+buttonText.anchor.set(0.5, 0.5);
+buttonText.x = dragButton.x;
+buttonText.y = dragButton.y;
+game.addChild(buttonText);
+function handleMove(x, y, obj) {
+	if (dragButton.isPressed && currentDraggedTower) {
+		currentDraggedTower.x = x;
+		currentDraggedTower.y = y;
+	}
+}
+game.move = handleMove;
+game.down = function (x, y, obj) {
+	if (dragButton.isPressed && !currentDraggedTower) {
+		// Create a new tower clone to drag
+		var newTower = new TestTower();
+		newTower.x = x;
+		newTower.y = y;
+		towers.push(newTower);
+		game.addChild(newTower);
+		currentDraggedTower = newTower;
+	}
+};
+game.up = function (x, y, obj) {
+	if (currentDraggedTower && !dragButton.isPressed) {
+		currentDraggedTower = null;
+	}
+};
\ No newline at end of file