/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	highScore: 0,
	difficulty: 1
});

/**** 
* Classes
****/ 
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = ballGraphics.width;
	self.height = ballGraphics.height;
	self.speedX = 0;
	self.speedY = 0;
	self.maxSpeed = 20;
	self.active = false;
	self.serveDirection = 1; // 1 = right, -1 = left
	self.lastHitBy = null;
	self.reset = function () {
		self.x = 2048 / 2;
		self.y = 2732 / 2;
		self.active = false;
		self.speedX = 0;
		self.speedY = 0;
		// Alternate serve direction
		self.serveDirection = -self.serveDirection;
	};
	self.serve = function () {
		// Serve in the direction determined
		self.speedX = 10 * self.serveDirection;
		self.speedY = 5 * (Math.random() > 0.5 ? 1 : -1);
		self.active = true;
	};
	self.update = function () {
		if (!self.active) {
			return;
		}
		// Move the ball
		self.x += self.speedX;
		self.y += self.speedY;
		// Handle vertical wall collisions
		if (self.y < self.height / 2 || self.y > 2732 - self.height / 2) {
			self.speedY = -self.speedY;
			self.y = self.y < self.height / 2 ? self.height / 2 : 2732 - self.height / 2;
			LK.getSound('hit').play();
		}
	};
	self.checkPaddleCollision = function (paddle) {
		if (!self.active) {
			return false;
		}
		if (self.intersects(paddle)) {
			// Calculate bounce angle based on where the ball hits the paddle
			var relativeIntersectY = (paddle.y - self.y) / (paddle.height / 2);
			var bounceAngle = relativeIntersectY * (Math.PI / 4); // Max 45 degrees
			// Calculate new speeds
			var direction = self.x < 2048 / 2 ? 1 : -1;
			var speed = Math.min(Math.sqrt(self.speedX * self.speedX + self.speedY * self.speedY) + 0.5, self.maxSpeed);
			self.speedX = direction * speed * Math.cos(bounceAngle);
			self.speedY = speed * -Math.sin(bounceAngle);
			// Move ball away from paddle to prevent multiple collisions
			if (direction > 0) {
				self.x = paddle.x + paddle.width / 2 + self.width / 2;
			} else {
				self.x = paddle.x - paddle.width / 2 - self.width / 2;
			}
			self.lastHitBy = paddle;
			LK.getSound('hit').play();
			return true;
		}
		return false;
	};
	self.applyPowerup = function (powerupType) {
		switch (powerupType) {
			case 'speed':
				var currentSpeed = Math.sqrt(self.speedX * self.speedX + self.speedY * self.speedY);
				self.speedX = self.speedX / currentSpeed * (currentSpeed + 3);
				self.speedY = self.speedY / currentSpeed * (currentSpeed + 3);
				break;
			case 'size':
				tween(ballGraphics, {
					scale: 1.5
				}, {
					duration: 300
				});
				self.width = ballGraphics.width * 1.5;
				self.height = ballGraphics.height * 1.5;
				LK.setTimeout(function () {
					tween(ballGraphics, {
						scale: 1
					}, {
						duration: 300
					});
					self.width = ballGraphics.width / 1.5;
					self.height = ballGraphics.height / 1.5;
				}, 5000);
				break;
			case 'curve':
				self.speedY += Math.random() * 10 - 5;
				break;
		}
	};
	return self;
});
var Paddle = Container.expand(function (isPlayer) {
	var self = Container.call(this);
	self.isPlayer = isPlayer === undefined ? true : isPlayer;
	self.speed = 12;
	self.score = 0;
	var paddleGraphics = self.attachAsset('paddle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.width = paddleGraphics.width;
	self.height = paddleGraphics.height;
	self.ai = {
		difficulty: storage.difficulty || 1,
		reactionDelay: 0,
		targetY: 0,
		thinkTime: 0
	};
	self.move = function (x, y) {
		if (y < self.height / 2) {
			self.y = self.height / 2;
		} else if (y > 2732 - self.height / 2) {
			self.y = 2732 - self.height / 2;
		} else {
			self.y = y;
		}
	};
	self.updateAI = function (ballY, ballSpeedY) {
		// Decrease AI think time
		if (self.ai.thinkTime > 0) {
			self.ai.thinkTime--;
			return;
		}
		// Calculate where the ball will be
		var errorMargin = (4 - self.ai.difficulty) * 60;
		self.ai.targetY = ballY + Math.random() * errorMargin - errorMargin / 2;
		// Set a new think time
		self.ai.thinkTime = Math.floor(Math.random() * (8 - self.ai.difficulty * 2));
	};
	self.runAI = function () {
		if (self.y < self.ai.targetY - self.speed) {
			self.y += self.speed;
		} else if (self.y > self.ai.targetY + self.speed) {
			self.y -= self.speed;
		}
		// Constrain paddle to field
		if (self.y < self.height / 2) {
			self.y = self.height / 2;
		} else if (self.y > 2732 - self.height / 2) {
			self.y = 2732 - self.height / 2;
		}
	};
	return self;
});
var Powerup = Container.expand(function () {
	var self = Container.call(this);
	var powerupGraphics = self.attachAsset('powerup', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.type = 'speed'; // Default type
	self.active = true;
	self.types = ['speed', 'size', 'curve'];
	self.spawn = function () {
		// Position randomly in the middle third of the court
		self.x = Math.random() * (2048 * 0.6) + 2048 * 0.2;
		self.y = Math.random() * (2732 * 0.6) + 2732 * 0.2;
		// Set random type
		self.type = self.types[Math.floor(Math.random() * self.types.length)];
		// Set color based on type
		switch (self.type) {
			case 'speed':
				powerupGraphics.tint = 0xFF5500; // Orange
				break;
			case 'size':
				powerupGraphics.tint = 0x00AAFF; // Blue
				break;
			case 'curve':
				powerupGraphics.tint = 0xFFAA00; // Yellow
				break;
		}
		self.active = true;
		// Create a pulsing animation
		tween(self, {
			alpha: 0.6
		}, {
			duration: 500,
			easing: tween.sinusoidal,
			onFinish: function onFinish() {
				tween(self, {
					alpha: 1
				}, {
					duration: 500,
					easing: tween.sinusoidal,
					onFinish: function onFinish() {
						if (self.active) {
							self.spawn(); // Restart the pulse animation
						}
					}
				});
			}
		});
		// Auto-remove after 10 seconds
		LK.setTimeout(function () {
			if (self.active) {
				self.deactivate();
			}
		}, 10000);
	};
	self.deactivate = function () {
		self.active = false;
		tween(self, {
			alpha: 0
		}, {
			duration: 300,
			onFinish: function onFinish() {
				if (self.parent) {
					self.parent.removeChild(self);
				}
			}
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000
});

/**** 
* Game Code
****/ 
// Game state
var gameState = 'title'; // title, serving, playing, gameover
var gameTime = 0;
var touchPaddle = null;
var servingTimeout = null;
var powerupTimeout = null;
var powerupActive = false;
// Game elements
var playerPaddle;
var aiPaddle;
var ball;
var powerup;
var scoreLeft;
var scoreRight;
var centerLine;
var titleText;
var subtitleText;
var gameOverText;
// Initialize game elements
function setupGame() {
	// Create center line
	centerLine = new Container();
	for (var i = 0; i < 34; i++) {
		var linePart = centerLine.attachAsset('dividerLine', {
			anchorX: 0.5,
			anchorY: 0.5,
			y: i * 80
		});
	}
	centerLine.x = 2048 / 2;
	game.addChild(centerLine);
	// Create player paddle
	playerPaddle = new Paddle(true);
	playerPaddle.x = 100;
	playerPaddle.y = 2732 / 2;
	game.addChild(playerPaddle);
	// Create AI paddle
	aiPaddle = new Paddle(false);
	aiPaddle.x = 2048 - 100;
	aiPaddle.y = 2732 / 2;
	game.addChild(aiPaddle);
	// Create ball
	ball = new Ball();
	ball.reset();
	game.addChild(ball);
	// Create score text
	scoreLeft = new Text2('0', {
		size: 150,
		fill: 0xFFFFFF
	});
	scoreLeft.anchor.set(0.5, 0.5);
	scoreLeft.x = 2048 / 4;
	scoreLeft.y = 200;
	game.addChild(scoreLeft);
	scoreRight = new Text2('0', {
		size: 150,
		fill: 0xFFFFFF
	});
	scoreRight.anchor.set(0.5, 0.5);
	scoreRight.x = 2048 * 3 / 4;
	scoreRight.y = 200;
	game.addChild(scoreRight);
	// Title text
	titleText = new Text2('PIXEL PONG', {
		size: 200,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 2048 / 2;
	titleText.y = 2732 / 3;
	game.addChild(titleText);
	subtitleText = new Text2('TAP TO START\n\nDRAG TO MOVE PADDLE', {
		size: 80,
		fill: 0xFFFFFF
	});
	subtitleText.anchor.set(0.5, 0.5);
	subtitleText.x = 2048 / 2;
	subtitleText.y = 2732 / 2;
	game.addChild(subtitleText);
	gameOverText = new Text2('', {
		size: 150,
		fill: 0xFFFFFF
	});
	gameOverText.anchor.set(0.5, 0.5);
	gameOverText.x = 2048 / 2;
	gameOverText.y = 2732 / 2;
	gameOverText.visible = false;
	game.addChild(gameOverText);
	// Set title screen
	setGameState('title');
	// Start background music
	LK.playMusic('bgMusic');
}
function setGameState(state) {
	gameState = state;
	switch (state) {
		case 'title':
			ball.reset();
			playerPaddle.score = 0;
			aiPaddle.score = 0;
			updateScoreDisplay();
			titleText.visible = true;
			subtitleText.visible = true;
			gameOverText.visible = false;
			break;
		case 'serving':
			titleText.visible = false;
			subtitleText.visible = false;
			gameOverText.visible = false;
			// Set serving timeout
			servingTimeout = LK.setTimeout(function () {
				ball.serve();
				setGameState('playing');
			}, 1500);
			break;
		case 'playing':
			// Schedule powerup
			schedulePowerup();
			break;
		case 'gameover':
			gameOverText.visible = true;
			// Check for new high score
			if (playerPaddle.score > storage.highScore) {
				storage.highScore = playerPaddle.score;
				gameOverText.setText('GAME OVER\nNEW HIGH SCORE: ' + storage.highScore);
			} else {
				gameOverText.setText('GAME OVER\nSCORE: ' + playerPaddle.score + '\nHIGH SCORE: ' + storage.highScore);
			}
			// Clear timeouts
			if (servingTimeout) {
				LK.clearTimeout(servingTimeout);
				servingTimeout = null;
			}
			if (powerupTimeout) {
				LK.clearTimeout(powerupTimeout);
				powerupTimeout = null;
			}
			// Remove any active powerup
			if (powerupActive && powerup && powerup.parent) {
				powerup.deactivate();
				powerupActive = false;
			}
			break;
	}
}
function schedulePowerup() {
	if (powerupTimeout) {
		LK.clearTimeout(powerupTimeout);
	}
	// Schedule next powerup between 5-15 seconds
	powerupTimeout = LK.setTimeout(function () {
		spawnPowerup();
	}, 5000 + Math.random() * 10000);
}
function spawnPowerup() {
	// Only one powerup at a time
	if (powerupActive) {
		return;
	}
	powerup = new Powerup();
	powerup.spawn();
	game.addChild(powerup);
	powerupActive = true;
}
function updateScoreDisplay() {
	scoreLeft.setText(playerPaddle.score.toString());
	scoreRight.setText(aiPaddle.score.toString());
}
function scorePoint(forLeft) {
	if (forLeft) {
		playerPaddle.score++;
	} else {
		aiPaddle.score++;
	}
	updateScoreDisplay();
	LK.getSound('score').play();
	// Check for game over
	if (playerPaddle.score >= 11 || aiPaddle.score >= 11) {
		LK.setTimeout(function () {
			setGameState('gameover');
		}, 1000);
	} else {
		// Reset for next round
		ball.reset();
		setGameState('serving');
	}
}
// Event handlers
game.down = function (x, y, obj) {
	if (gameState === 'title') {
		setGameState('serving');
	} else if (gameState === 'gameover') {
		setGameState('title');
	} else {
		touchPaddle = playerPaddle;
		touchPaddle.move(x, y);
	}
};
game.move = function (x, y, obj) {
	if (touchPaddle) {
		touchPaddle.move(x, y);
	}
};
game.up = function (x, y, obj) {
	touchPaddle = null;
};
// Main game update loop
game.update = function () {
	if (gameState === 'playing' || gameState === 'serving') {
		// Update ball
		ball.update();
		// Check for paddle collisions
		ball.checkPaddleCollision(playerPaddle);
		ball.checkPaddleCollision(aiPaddle);
		// Check for scoring
		if (ball.x < -ball.width) {
			scorePoint(false);
		} else if (ball.x > 2048 + ball.width) {
			scorePoint(true);
		}
		// Update AI paddle
		if (ball.active) {
			if (ball.speedX > 0) {
				aiPaddle.updateAI(ball.y, ball.speedY);
			}
			aiPaddle.runAI();
		}
		// Check for powerup collision
		if (powerupActive && powerup && ball.intersects(powerup)) {
			ball.applyPowerup(powerup.type);
			powerup.deactivate();
			powerupActive = false;
			LK.getSound('powerup').play();
			schedulePowerup();
		}
	}
	// Animate title on title screen
	if (gameState === 'title') {
		gameTime++;
		titleText.scale.set(1 + Math.sin(gameTime / 30) * 0.05);
	}
};
// Initialize everything
setupGame();

===================================================================
--- original.js
+++ change.js
@@ -245,9 +245,8 @@
 * Game Code
 ****/ 
 // Game state
 var gameState = 'title'; // title, serving, playing, gameover
-var isTwoPlayer = false;
 var gameTime = 0;
 var touchPaddle = null;
 var servingTimeout = null;
 var powerupTimeout = null;
@@ -275,13 +274,14 @@
 		});
 	}
 	centerLine.x = 2048 / 2;
 	game.addChild(centerLine);
-	// Create paddles
+	// Create player paddle
 	playerPaddle = new Paddle(true);
 	playerPaddle.x = 100;
 	playerPaddle.y = 2732 / 2;
 	game.addChild(playerPaddle);
+	// Create AI paddle
 	aiPaddle = new Paddle(false);
 	aiPaddle.x = 2048 - 100;
 	aiPaddle.y = 2732 / 2;
 	game.addChild(aiPaddle);
@@ -464,9 +464,9 @@
 		} else if (ball.x > 2048 + ball.width) {
 			scorePoint(true);
 		}
 		// Update AI paddle
-		if (!isTwoPlayer && ball.active) {
+		if (ball.active) {
 			if (ball.speedX > 0) {
 				aiPaddle.updateAI(ball.y, ball.speedY);
 			}
 			aiPaddle.runAI();