/**** 
* Classes
****/
// Define Tetromino class
var Tetromino = Container.expand(function () {
	var self = Container.call(this);
	this.blocks = [];
	this.type = '';
	this.rotationIndex = 0;
	this.initializeBlocks = function (layout) {
		for (var i = 0; i < layout.length; i++) {
			for (var j = 0; j < layout[i].length; j++) {
				if (layout[i][j]) {
					var block = self.createAsset('block_' + this.type, 'Tetromino block', 0.5, 0.5);
					block.x = j * block.width;
					block.y = i * block.height;
					this.blocks.push(block);
					this.addChild(block);
				}
			}
		}
	};
	this.create = function (type) {
		this.type = type;
		this.rotationIndex = 0;
		var layout = tetrominoLayouts[type][this.rotationIndex];
		this.initializeBlocks(layout);
	};
	this.rotate = function () {
		this.rotationIndex = (this.rotationIndex + 1) % tetrominoLayouts[this.type].length;
		this.updateBlockPositions();
	};
	this.updateBlockPositions = function () {
		var layout = tetrominoLayouts[this.type][this.rotationIndex];
		var k = 0;
		for (var i = 0; i < layout.length; i++) {
			for (var j = 0; j < layout[i].length; j++) {
				if (layout[i][j]) {
					this.blocks[k].x = j * this.blocks[k].width;
					this.blocks[k].y = i * this.blocks[k].height;
					k++;
				}
			}
		}
	};
	this.move = function (dx, dy) {
		this.x += dx;
		this.y += dy;
	};
});
// Define GameBoard class
var GameBoard = Container.expand(function () {
	var self = Container.call(this);
	this.grid = [];
	this.init = function () {
		for (var i = 0; i < boardHeight; i++) {
			this.grid[i] = [];
			for (var j = 0; j < boardWidth; j++) {
				this.grid[i][j] = null;
			}
		}
	};
	this.addTetromino = function (tetromino) {
		var blocks = tetromino.blocks;
		for (var i = 0; i < blocks.length; i++) {
			var block = blocks[i];
			var x = Math.round((block.x + tetromino.x - this.x) / blockSize);
			var y = Math.round((block.y + tetromino.y - this.y) / blockSize);
			if (this.grid[y] && this.grid[y][x] === null) {
				this.grid[y][x] = block;
			}
		}
	};
	this.isGameOver = function () {
		for (var x = 0; x < boardWidth; x++) {
			if (this.grid[0][x] !== null) {
				return true;
			}
		}
		return false;
	};
	this.checkLines = function () {
		// Check for complete lines and remove them
	};
});

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

/**** 
* Game Code
****/
// Define game constants and variables
var boardWidth = 10;
var boardHeight = 20;
var blockSize = 2048 / boardWidth; // Calculate block size based on viewable area width
var board = game.addChild(new GameBoard());
var currentTetromino;
var nextTetrominoType;
var tetrominoTypes = ['I', 'J', 'L', 'O', 'S', 'T', 'Z'];
var tetrominoLayouts = {
	'I': [[[1, 1, 1, 1]]],
	'J': [[[1, 0, 0], [1, 1, 1]]],
	'L': [[[0, 0, 1], [1, 1, 1]]],
	'O': [[[1, 1], [1, 1]]],
	'S': [[[0, 1, 1], [1, 1, 0]]],
	'T': [[[0, 1, 0], [1, 1, 1]]],
	'Z': [[[1, 1, 0], [0, 1, 1]]]
};
var scoreTxt;
var isGameOver = false;

// Initialize board
board.init();

// Center the board on the screen
board.x = (2048 - boardWidth * blockSize) / 2;
board.y = (2732 - boardHeight * blockSize) / 2;

// Create score display
scoreTxt = new Text2('0', {
	size: 150,
	fill: "#ffffff"
});
scoreTxt.anchor.set(.5, 0);
LK.gui.top.addChild(scoreTxt);

// Function to spawn a new tetromino
function spawnTetromino() {
	var type = nextTetrominoType || tetrominoTypes[Math.floor(Math.random() * tetrominoTypes.length)];
	nextTetrominoType = tetrominoTypes[Math.floor(Math.random() * tetrominoTypes.length)];
	currentTetromino = new Tetromino();
	currentTetromino.create(type);
	currentTetromino.x = board.x + boardWidth / 2 * blockSize - currentTetromino.width / 2;
	currentTetromino.y = board.y;
	game.addChild(currentTetromino);
}

// Start the game with a new tetromino
spawnTetromino();

// Game tick event
LK.on('tick', function () {
	if (isGameOver) {
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
		return;
	}

	// Move current tetromino down
	currentTetromino.move(0, blockSize);

	// Check for collision with board or bottom
	// ...

	// Check for completed lines
	board.checkLines();

	// Check for game over
	if (board.isGameOver()) {
		isGameOver = true;
	}
});

// Touch event listeners for rotating and moving tetromino
game.on('down', function (obj) {
	var touchPos = obj.event.getLocalPosition(game);
	if (touchPos.x < 2048 / 2) {
		// Move tetromino left
		currentTetromino.move(-blockSize, 0);
	} else {
		// Move tetromino right
		currentTetromino.move(blockSize, 0);
	}
});
game.on('up', function (obj) {
	// Rotate tetromino
	currentTetromino.rotate();
});

===================================================================
--- original.js
+++ change.js
@@ -97,9 +97,9 @@
 // Define game constants and variables
 var boardWidth = 10;
 var boardHeight = 20;
 var blockSize = 2048 / boardWidth; // Calculate block size based on viewable area width
-var board = game.addChild(new Board());
+var board = game.addChild(new GameBoard());
 var currentTetromino;
 var nextTetrominoType;
 var tetrominoTypes = ['I', 'J', 'L', 'O', 'S', 'T', 'Z'];
 var tetrominoLayouts = {