/**** 
* Classes
****/ 
var Cash = Container.expand(function () {
	var self = Container.call(this);
	var cashGraphics = self.attachAsset('cash', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Cash logic if needed
	};
});
// Guard class
var Guard = Container.expand(function () {
	var self = Container.call(this);
	var guardGraphics = self.attachAsset('guard', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		// Guard movement logic will be handled in the game update loop
	};
});
//<Assets used in the game will automatically appear here>
// Thief class
var Thief = Container.expand(function () {
	var self = Container.call(this);
	var thiefGraphics = self.attachAsset('thief', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		// Thief movement logic will be handled in the game update loop
	};
});
// Trap class
var Trap = Container.expand(function () {
	var self = Container.call(this);
	var trapGraphics = self.attachAsset('trap', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.update = function () {
		// Trap logic if needed
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x808080 //Init game with grey background
});

/**** 
* Game Code
****/ 
game.move = function (x, y, obj) {
	if (dragNode) {
		dragNode.x = x;
		dragNode.y = y;
	}
};
game.up = function (x, y, obj) {
	dragNode = null;
};
var thief = game.addChild(new Thief());
thief.x = 1024;
thief.y = 1366;
var cashItems = [];
var traps = [];
var guards = [];
var score = 0;
var scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
function spawnCash() {
	var cash = new Cash();
	cash.x = Math.random() * 2048;
	cash.y = Math.random() * 2732;
	cashItems.push(cash);
	game.addChild(cash);
}
function spawnTrap() {
	var trap = new Trap();
	trap.x = Math.random() * 2048;
	trap.y = Math.random() * 2732;
	traps.push(trap);
	game.addChild(trap);
}
function spawnGuard() {
	var guard = new Guard();
	guard.x = Math.random() * 2048;
	guard.y = Math.random() * 2732;
	guards.push(guard);
	game.addChild(guard);
}
var dragNode = null;
game.down = function (x, y, obj) {
	dragNode = thief;
	thief.x = x;
	thief.y = y;
};
game.update = function () {
	for (var i = cashItems.length - 1; i >= 0; i--) {
		if (thief.intersects(cashItems[i])) {
			score += 10;
			LK.setScore(score);
			scoreTxt.setText(score);
			cashItems[i].destroy();
			cashItems.splice(i, 1);
			LK.getSound('CashCollect').play();
		}
	}
	for (var i = traps.length - 1; i >= 0; i--) {
		if (thief.intersects(traps[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	for (var i = guards.length - 1; i >= 0; i--) {
		if (thief.intersects(guards[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	if (LK.ticks % 120 == 0) {
		spawnCash();
	}
	if (LK.ticks % 300 == 0) {
		spawnTrap();
	}
	if (LK.ticks % 600 == 0) {
		spawnGuard();
	}
	guards.forEach(function (guard) {
		if (thief.x > guard.x) {
			guard.x += guard.speed;
		} else {
			guard.x -= guard.speed;
		}
		if (thief.y > guard.y) {
			guard.y += guard.speed;
		} else {
			guard.y -= guard.speed;
		}
	});
};

===================================================================
--- original.js
+++ change.js
@@ -51,9 +51,9 @@
 /**** 
 * Initialize Game
 ****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000 //Init game with black background 
+	backgroundColor: 0x808080 //Init game with grey background
 });
 
 /**** 
 * Game Code