/**** 
* Classes
****/
// Paddle class for player
var PlayerPaddle = Container.expand(function () {
	var self = Container.call(this);
	var paddleGraphics = self.createAsset('paddle', 'Player Paddle Graphics', 0.5, 0.5);
	self.speed = 10;
	self.moveUp = function () {
		if (self.y > 0) {
			self.y -= self.speed;
		}
	};
	self.moveDown = function () {
		if (self.y < game.height - paddleGraphics.height) {
			self.y += self.speed;
		}
	};
});
// Paddle class for AI
var AIPaddle = Container.expand(function () {
	var self = Container.call(this);
	var paddleGraphics = self.createAsset('ai_paddle', 'AI Paddle Graphics', 0.5, 0.5);
	self.speed = 10;
	self.updateDifficulty = function (playerScore) {
		self.speed = 10 + playerScore * 0.5; // Increase AI speed based on player score
	};
	self.moveUp = function () {
		if (self.y > 0) {
			self.y -= self.speed;
		}
	};
	self.moveDown = function () {
		if (self.y < game.height - paddleGraphics.height) {
			self.y += self.speed;
		}
	};
});
// Ball class
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.createAsset('ball', 'Ball Graphics', 0.5, 0.5);
	self.velocity = {
		x: 5,
		y: 5
	};
	self.move = function (playerPaddleY) {
		// Slow down ball when moving towards player's paddle for assistance
		if (self.velocity.x < 0) {
			self.x += self.velocity.x * 0.75; // 25% slower
		} else {
			self.x += self.velocity.x;
		}
		self.y += self.velocity.y;
		// Adjust ball's y velocity to avoid it going out of reach
		var paddleCenter = playerPaddleY + 50; // Assuming paddle height is 100
		if (self.velocity.x < 0 && Math.abs(self.y - paddleCenter) > 200) {
			self.velocity.y *= 0.9; // Slow down y velocity by 10%
		}
	};
	self.reset = function () {
		self.x = game.width / 2;
		self.y = game.height / 2;
		self.velocity = {
			x: 5,
			y: 5
		};
	};
	self.bounce = function (axis) {
		if (axis === 'x') {
			self.velocity.x *= -1.1; // Increase speed by 10% on each paddle hit
			if (LK.Audio && typeof LK.Audio.play === 'function') {
				LK.Audio.play('hit_paddle_sound');
			}
		} else if (axis === 'y') {
			self.velocity.y *= -1;
			if (LK.Audio && typeof LK.Audio.play === 'function') {
				LK.Audio.play('wall_hit_sound');
			}
		}
	};
});
// Background class
var Background = Container.expand(function () {
	var self = Container.call(this);
	var backgroundGraphics = self.createAsset('background', 'Background Graphics', 0.5, 0.5);
	// Set background size to cover the entire game area
	backgroundGraphics.width = game.width;
	backgroundGraphics.height = game.height;
});
var ScoreManager = Container.expand(function () {
	var self = Container.call(this);
	self.playerScore = 0;
	self.aiScore = 0;
	self.scoreTxt = new Text2('0 - 0', {
		size: 150,
		fill: "#ffffff"
	});
	self.scoreTxt.anchor.set(.5, 0);
	LK.gui.top.addChild(self.scoreTxt);
	self.updateScore = function () {
		self.scoreTxt.setText(self.playerScore + ' - ' + self.aiScore);
	};
	self.playerScores = function () {
		self.playerScore += 1;
		self.updateScore();
	};
	self.aiScores = function () {
		self.aiScore += 1;
		self.updateScore();
	};
	self.resetScores = function () {
		self.playerScore = 0;
		self.aiScore = 0;
		self.updateScore();
	};
});

/**** 
* Initialize Game
****/
// Ball out of bounds
// Initialize and add background to the game
var game = new LK.Game({
	backgroundColor: 0x000000 // Init game with black background
});

/**** 
* Game Code
****/
// Initialize and add background to the game
var background = game.addChild(new Background());
background.x = game.width / 2;
background.y = game.height / 2;
// Play background music
// Initialize paddles and ball
var playerPaddle = new PlayerPaddle();
var aiPaddle = new AIPaddle();
var ball = new Ball();
// Set initial positions
playerPaddle.x = 100;
playerPaddle.y = game.height / 2;
aiPaddle.x = game.width - 100;
aiPaddle.y = game.height / 2;
ball.reset();
// Add paddles, ball, and score manager to the game
game.addChild(playerPaddle);
game.addChild(aiPaddle);
game.addChild(ball);
var scoreManager = game.addChild(new ScoreManager());
// AI logic
function aiMove() {
	if (ball.y < aiPaddle.y) {
		aiPaddle.moveUp();
	} else if (ball.y > aiPaddle.y) {
		aiPaddle.moveDown();
	}
}
// Game tick event
LK.on('tick', function () {
	// Player paddle movement
	if (LK.Input.isDown('up')) {
		playerPaddle.moveUp();
	}
	if (LK.Input.isDown('down')) {
		playerPaddle.moveDown();
	}
	// Move ball
	ball.move();
	// Ball collision with top and bottom
	if (ball.y <= 0 || ball.y >= game.height) {
		ball.bounce('y');
	}
	// Ball collision with paddles
	if (ball.intersects(playerPaddle) || ball.intersects(aiPaddle)) {
		ball.bounce('x');
	}
	// Ball out of bounds
	if (ball.x <= 0) {
		scoreManager.aiScores();
		ball.reset();
	} else if (ball.x >= game.width) {
		scoreManager.playerScores();
		ball.reset();
	}
	// Update score display is now handled within the ScoreManager class.
	// Update AI difficulty based on player score
	aiPaddle.updateDifficulty(scoreManager.playerScore);
	// AI movement
	aiMove();
});

===================================================================
--- original.js
+++ change.js
@@ -157,8 +157,15 @@
 	}
 }
 // Game tick event
 LK.on('tick', function () {
+	// Player paddle movement
+	if (LK.Input.isDown('up')) {
+		playerPaddle.moveUp();
+	}
+	if (LK.Input.isDown('down')) {
+		playerPaddle.moveDown();
+	}
 	// Move ball
 	ball.move();
 	// Ball collision with top and bottom
 	if (ball.y <= 0 || ball.y >= game.height) {