/**** 
* Classes
****/
// Paddle class
var Paddle = Container.expand(function () {
	var self = Container.call(this);
	var paddleGraphics = self.attachAsset('paddle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.moveUp = function () {
		self.y -= self.speed;
	};
	self.moveDown = function () {
		self.y += self.speed;
	};
});
// Ball class
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = {
		x: 5,
		y: 5
	};
	self.move = function () {
		self.x += self.velocity.x;
		self.y += self.velocity.y;
	};
	self.reset = function () {
		self.x = 2048 / 2;
		self.y = 2732 / 2;
		self.velocity = {
			x: 5,
			y: 5
		};
	};
});
// Background class
var Background = Container.expand(function () {
	var self = Container.call(this);
	var backgroundGraphics = self.attachAsset('background', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Set background to cover the entire game area
	backgroundGraphics.width = 2048;
	backgroundGraphics.height = 2732;
	// Position the background in the center
	self.x = 2048 / 2;
	self.y = 2732 / 2;
});

/**** 
* Initialize Game
****/
// Initialize paddles and ball
// Define the paddle asset
// Define the ball asset
var game = new LK.Game({
	backgroundColor: 0x92c7f3 // Init game with blue background
});

/**** 
* Game Code
****/
// Define the ball asset
// Define the paddle asset
// Initialize paddles and ball
var leftPaddle = game.addChild(new Paddle());
var rightPaddle = game.addChild(new Paddle());
var ball = game.addChild(new Ball());
// Set initial positions
leftPaddle.x = 50;
leftPaddle.y = 2732 / 2;
rightPaddle.x = 2048 - 50;
rightPaddle.y = 2732 / 2;
ball.reset();
// Instantiate and add background to the game
var background = game.addChild(new Background());
// Game tick event
LK.on('tick', function () {
	// Move the ball
	ball.move();
	// Ball collision with top and bottom
	if (ball.y <= 0 || ball.y >= 2732) {
		ball.velocity.y *= -1;
	}
	// Ball collision with paddles
	if (ball.intersects(leftPaddle) || ball.intersects(rightPaddle)) {
		ball.velocity.x *= -1;
	}
	// Ball out of bounds
	if (ball.x <= 0 || ball.x >= 2048) {
		ball.reset();
	}
	// Paddle movement logic
	// This should be replaced with touch/mouse event logic for mobile compatibility
	// For now, paddles will move automatically for demonstration purposes
	if (leftPaddle.y > ball.y) {
		leftPaddle.moveUp();
	} else {
		leftPaddle.moveDown();
	}
	if (rightPaddle.y > ball.y) {
		rightPaddle.moveUp();
	} else {
		rightPaddle.moveDown();
	}
	// Keep paddles within game bounds
	leftPaddle.y = Math.max(leftPaddle.height / 2, Math.min(leftPaddle.y, 2732 - leftPaddle.height / 2));
	rightPaddle.y = Math.max(rightPaddle.height / 2, Math.min(rightPaddle.y, 2732 - rightPaddle.height / 2));
});
// Touch event listeners for paddles
game.on('down', function (obj) {
	var event = obj.event;
	var pos = event.getLocalPosition(game);
	// Determine which paddle to control based on touch position
	if (pos.x < 2048 / 2) {
		leftPaddle.y = pos.y;
	} else {
		rightPaddle.y = pos.y;
	}
});
game.on('move', function (obj) {
	var event = obj.event;
	var pos = event.getLocalPosition(game);
	// Update paddle position based on touch movement
	if (pos.x < 2048 / 2) {
		leftPaddle.y = pos.y;
	} else {
		rightPaddle.y = pos.y;
	}
});

===================================================================
--- original.js
+++ change.js
@@ -39,12 +39,29 @@
 			y: 5
 		};
 	};
 });
+// Background class
+var Background = Container.expand(function () {
+	var self = Container.call(this);
+	var backgroundGraphics = self.attachAsset('background', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Set background to cover the entire game area
+	backgroundGraphics.width = 2048;
+	backgroundGraphics.height = 2732;
+	// Position the background in the center
+	self.x = 2048 / 2;
+	self.y = 2732 / 2;
+});
 
 /**** 
 * Initialize Game
 ****/
+// Initialize paddles and ball
+// Define the paddle asset
+// Define the ball asset
 var game = new LK.Game({
 	backgroundColor: 0x92c7f3 // Init game with blue background
 });
 
@@ -62,8 +79,10 @@
 leftPaddle.y = 2732 / 2;
 rightPaddle.x = 2048 - 50;
 rightPaddle.y = 2732 / 2;
 ball.reset();
+// Instantiate and add background to the game
+var background = game.addChild(new Background());
 // Game tick event
 LK.on('tick', function () {
 	// Move the ball
 	ball.move();