/**** 
* Classes
****/ 
var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocityX = 0;
	self.velocityY = 0;
	self.update = function () {
		self.x += self.velocityX;
		self.y += self.velocityY;
	};
	return self;
});
var Brick = Container.expand(function () {
	var self = Container.call(this);
	var brickGraphics = self.attachAsset('brick', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.setColor = function (color) {
		brickGraphics.tint = color;
	};
	return self;
});
var Paddle = Container.expand(function () {
	var self = Container.call(this);
	var paddleGraphics = self.attachAsset('paddle', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	return self;
});

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

/**** 
* Game Code
****/ 
// Game constants
var PADDLE_SPEED = 15;
var BALL_SPEED = 8;
var BRICK_ROWS = 3;
var BRICK_COLS = 7;
var BRICK_SPACING = 5;
// Game variables
var paddle;
var ball;
var bricks = [];
var gameStarted = false;
var ballLaunched = false;
// Score display
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Initialize paddle
paddle = game.addChild(new Paddle());
paddle.x = 1024;
paddle.y = 2400;
// Initialize ball
ball = game.addChild(new Ball());
ball.x = 1024;
ball.y = 2355;
// Create bricks
var brickColors = [0xff0000, 0xff7700, 0xffff00, 0x00ff00, 0x0077ff, 0x7700ff];
for (var row = 0; row < BRICK_ROWS; row++) {
	for (var col = 0; col < BRICK_COLS; col++) {
		var brick = new Brick();
		brick.x = 320 + col * (180 + BRICK_SPACING * 2);
		brick.y = 300 + row * (60 + BRICK_SPACING * 2);
		brick.setColor(brickColors[row % brickColors.length]);
		bricks.push(brick);
		game.addChild(brick);
	}
}
// Touch controls
var touchX = null;
game.down = function (x, y, obj) {
	touchX = x;
	if (!ballLaunched) {
		// Launch ball on first touch
		ballLaunched = true;
		ball.velocityX = BALL_SPEED * 0.7;
		ball.velocityY = -BALL_SPEED;
	}
};
game.move = function (x, y, obj) {
	if (touchX !== null) {
		var deltaX = x - touchX;
		paddle.x += deltaX;
		// Keep paddle within screen bounds
		var halfPaddleWidth = 300;
		if (paddle.x < halfPaddleWidth) {
			paddle.x = halfPaddleWidth;
		} else if (paddle.x > 2048 - halfPaddleWidth) {
			paddle.x = 2048 - halfPaddleWidth;
		}
		// Move ball with paddle if not launched
		if (!ballLaunched) {
			ball.x = paddle.x;
		}
		touchX = x;
	}
};
game.up = function (x, y, obj) {
	touchX = null;
};
// Main game update
game.update = function () {
	if (!ballLaunched) return;
	// Ball collision with walls
	if (ball.x <= 30 || ball.x >= 2018) {
		ball.velocityX = -ball.velocityX;
		LK.getSound('hit').play();
	}
	// Ball collision with ceiling
	if (ball.y <= 30) {
		ball.velocityY = -ball.velocityY;
		LK.getSound('hit').play();
	}
	// Ball fell off screen
	if (ball.y > 2732) {
		LK.showGameOver();
	}
	// Ball collision with paddle
	if (ball.intersects(paddle) && ball.velocityY > 0) {
		ball.velocityY = -ball.velocityY;
		// Add spin based on where ball hits paddle
		var hitPosition = (ball.x - paddle.x) / 300;
		ball.velocityX = hitPosition * BALL_SPEED;
		LK.getSound('hit').play();
	}
	// Ball collision with bricks
	for (var i = bricks.length - 1; i >= 0; i--) {
		var brick = bricks[i];
		if (ball.intersects(brick)) {
			// Remove brick
			brick.destroy();
			bricks.splice(i, 1);
			// Reverse ball direction
			ball.velocityY = -ball.velocityY;
			// Update score
			LK.setScore(LK.getScore() + 10);
			scoreTxt.setText(LK.getScore());
			LK.getSound('break').play();
			// Check win condition
			if (bricks.length === 0) {
				LK.showYouWin();
			}
			break;
		}
	}
};