var Snake = Container.expand(function (assetId, speed, directionX, directionY) {
	var self = Container.call(this);
	var snakeGraphics = self.createAsset(assetId, 'Snake Graphics', .5, .5);
	self.speed = speed;
	self.direction = {
		x: directionX,
		y: directionY
	};
	self.targetDirection = {
		x: directionX,
		y: directionY
	};
	self.turningSpeed = 0.05;
	self.move = function () {
		var targetAngle = Math.atan2(self.targetDirection.y, self.targetDirection.x);
		var currentAngle = Math.atan2(self.direction.y, self.direction.x);
		var deltaAngle = targetAngle - currentAngle;
		if (deltaAngle > Math.PI) deltaAngle -= 2 * Math.PI;
		if (deltaAngle < -Math.PI) deltaAngle += 2 * Math.PI;
		if (Math.abs(deltaAngle) < self.turningSpeed) {
			currentAngle = targetAngle;
		} else {
			currentAngle += Math.sign(deltaAngle) * self.turningSpeed;
		}
		self.rotation = currentAngle;
		self.direction.x = Math.cos(currentAngle);
		self.direction.y = Math.sin(currentAngle);
		self.x = (self.x + self.speed * self.direction.x + 2048) % 2048;
		self.y = (self.y + self.speed * self.direction.y + 2732) % 2732;
	};
	self.grow = function () {};
});
var Food = Container.expand(function () {
	var self = Container.call(this);
	var foodGraphics = self.createAsset('food', 'Food Graphics', .5, .5);
	self.spawn = function () {};
});
var EnemySnake = Snake.expand(function () {
	var self = this;
	Snake.call(self, 'enemySnake', 5, -1, 0);
	self.moveTowardsFood = function (foods) {
		var closestFood = null;
		var closestDistance = Infinity;
		for (var i = 0; i < foods.length; i++) {
			var dx = foods[i].x - self.x;
			var dy = foods[i].y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance < closestDistance) {
				closestDistance = distance;
				closestFood = foods[i];
			}
		}
		if (closestFood) {
			self.targetDirection.x = closestFood.x - self.x;
			self.targetDirection.y = closestFood.y - self.y;
			var magnitude = Math.sqrt(self.targetDirection.x * self.targetDirection.x + self.targetDirection.y * self.targetDirection.y);
			self.targetDirection.x /= magnitude;
			self.targetDirection.y /= magnitude;
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var snakes = [];
	var foods = [];
	var enemySnakes = [];
	var snake = self.addChild(new Snake('playerSnake', 5, 1, 0));
	snake.x = 2048 / 2;
	snake.y = 2732 / 2;
	var food = self.addChild(new Food());
	food.x = Math.random() * 2048;
	food.y = Math.random() * 2732;
	var enemySnake = self.addChild(new EnemySnake());
	enemySnake.x = Math.random() * 2048;
	enemySnake.y = Math.random() * 2732;
	snakes.push(snake);
	foods.push(food);
	enemySnakes.push(enemySnake);
	var dragNode = null;
	stage.on('down', function (obj) {
		dragNode = snake;
	});
	function handleMove(obj) {
		var event = obj.event;
		var pos = event.getLocalPosition(self);
		if (dragNode) {
			dragNode.targetDirection.x = pos.x - dragNode.x;
			dragNode.targetDirection.y = pos.y - dragNode.y;
			var magnitude = Math.sqrt(dragNode.targetDirection.x * dragNode.targetDirection.x + dragNode.targetDirection.y * dragNode.targetDirection.y);
			dragNode.targetDirection.x /= magnitude;
			dragNode.targetDirection.y /= magnitude;
		}
	}
	stage.on('move', handleMove);
	stage.on('up', function (obj) {
		dragNode = null;
	});
	LK.on('tick', function () {
		for (var i = 0; i < snakes.length; i++) {
			snakes[i].move();
		}
		for (var i = 0; i < enemySnakes.length; i++) {
			enemySnakes[i].moveTowardsFood(foods);
			enemySnakes[i].move();
		}
		for (var i = 0; i < foods.length; i++) {
			if (snake.intersects(foods[i])) {
				snake.grow();
				foods[i].destroy();
				foods.splice(i, 1);
				var newFood = new Food();
				newFood.x = Math.random() * 2048;
				newFood.y = Math.random() * 2732;
				foods.push(newFood);
				self.addChild(newFood);
			}
		}
		for (var i = 0; i < enemySnakes.length; i++) {
			if (snake.intersects(enemySnakes[i])) {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			}
		}
	});
});

===================================================================
--- original.js
+++ change.js
@@ -35,9 +35,10 @@
 	var foodGraphics = self.createAsset('food', 'Food Graphics', .5, .5);
 	self.spawn = function () {};
 });
 var EnemySnake = Snake.expand(function () {
-	var self = Snake.call(this, 'enemySnake', 5, -1, 0);
+	var self = this;
+	Snake.call(self, 'enemySnake', 5, -1, 0);
 	self.moveTowardsFood = function (foods) {
 		var closestFood = null;
 		var closestDistance = Infinity;
 		for (var i = 0; i < foods.length; i++) {