/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1");

/**** 
* Classes
****/ 
var Card = Container.expand(function (cardType) {
	var self = Container.call(this);
	self.cardType = cardType;
	self.isFlipped = false;
	self.isMatched = false;
	self.canFlip = true;
	// Create card back
	var cardBack = self.attachAsset('cardBack', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Create card front based on type
	var frontAssetName = 'cardFront' + cardType;
	var cardFront = self.attachAsset(frontAssetName, {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	self.cardBack = cardBack;
	self.cardFront = cardFront;
	self.flip = function () {
		if (!self.canFlip || self.isMatched) return;
		LK.getSound('cardFlip').play();
		if (!self.isFlipped) {
			// Flip to front
			tween(self.cardBack, {
				alpha: 0
			}, {
				duration: 150
			});
			tween(self.cardFront, {
				alpha: 1
			}, {
				duration: 150
			});
			self.isFlipped = true;
		} else {
			// Flip to back
			tween(self.cardBack, {
				alpha: 1
			}, {
				duration: 150
			});
			tween(self.cardFront, {
				alpha: 0
			}, {
				duration: 150
			});
			self.isFlipped = false;
		}
	};
	self.setMatched = function () {
		self.isMatched = true;
		self.canFlip = false;
		// Glow effect for matched cards
		tween(self, {
			alpha: 0.7
		}, {
			duration: 300,
			easing: tween.easeInOut
		});
		LK.getSound('match').play();
	};
	self.down = function (x, y, obj) {
		if (self.canFlip && !self.isMatched && !self.isFlipped) {
			onCardTapped(self);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2c5530
});

/**** 
* Game Code
****/ 
// Game state variables
var currentLevel = storage.currentLevel || 1;
var maxLevel = 10;
var cards = [];
var flippedCards = [];
var gameActive = true;
var moveCount = 0;
var matchedPairs = 0;
var totalPairs = 0;
var isProcessingMatch = false;
// Level configurations
var levelConfigs = [{
	rows: 2,
	cols: 4,
	pairs: 4
},
// Level 1: 4x2 = 8 cards
{
	rows: 3,
	cols: 4,
	pairs: 6
},
// Level 2: 4x3 = 12 cards
{
	rows: 4,
	cols: 4,
	pairs: 8
},
// Level 3: 4x4 = 16 cards
{
	rows: 4,
	cols: 5,
	pairs: 10
},
// Level 4: 5x4 = 20 cards
{
	rows: 4,
	cols: 6,
	pairs: 12
},
// Level 5: 6x4 = 24 cards
{
	rows: 5,
	cols: 6,
	pairs: 15
},
// Level 6: 6x5 = 30 cards
{
	rows: 6,
	cols: 6,
	pairs: 18
},
// Level 7: 6x6 = 36 cards
{
	rows: 7,
	cols: 6,
	pairs: 21
},
// Level 8: 6x7 = 42 cards
{
	rows: 8,
	cols: 6,
	pairs: 24
},
// Level 9: 6x8 = 48 cards
{
	rows: 9,
	cols: 6,
	pairs: 27
} // Level 10: 6x9 = 54 cards
];
// UI Elements
var levelText = new Text2('Level ' + currentLevel, {
	size: 80,
	fill: 0xFFFFFF
});
levelText.anchor.set(0.5, 0);
LK.gui.top.addChild(levelText);
var moveText = new Text2('Moves: 0', {
	size: 60,
	fill: 0xFFFFFF
});
moveText.anchor.set(0, 0);
moveText.x = 50;
moveText.y = 150;
LK.gui.topLeft.addChild(moveText);
var scoreText = new Text2('Score: ' + LK.getScore(), {
	size: 60,
	fill: 0xFFFFFF
});
scoreText.anchor.set(1, 0);
LK.gui.topRight.addChild(scoreText);
function onCardTapped(card) {
	if (!gameActive || isProcessingMatch) return;
	if (flippedCards.length < 2 && !card.isFlipped) {
		card.flip();
		flippedCards.push(card);
		if (flippedCards.length === 2) {
			moveCount++;
			moveText.setText('Moves: ' + moveCount);
			isProcessingMatch = true;
			// Check for match after a delay
			LK.setTimeout(function () {
				checkForMatch();
			}, 1000);
		}
	}
}
function checkForMatch() {
	if (flippedCards.length === 2) {
		var card1 = flippedCards[0];
		var card2 = flippedCards[1];
		if (card1.cardType === card2.cardType) {
			// Match found
			card1.setMatched();
			card2.setMatched();
			matchedPairs++;
			// Add points
			var points = Math.max(10, 50 - moveCount);
			LK.setScore(LK.getScore() + points);
			scoreText.setText('Score: ' + LK.getScore());
			// Check if level is complete
			if (matchedPairs === totalPairs) {
				LK.setTimeout(function () {
					completeLevel();
				}, 500);
			}
		} else {
			// No match, flip cards back
			card1.flip();
			card2.flip();
		}
		flippedCards = [];
		isProcessingMatch = false;
	}
}
function completeLevel() {
	gameActive = false;
	LK.getSound('levelComplete').play();
	// Bonus points for completing level
	var levelBonus = currentLevel * 100;
	LK.setScore(LK.getScore() + levelBonus);
	scoreText.setText('Score: ' + LK.getScore());
	// Flash screen green
	LK.effects.flashScreen(0x00ff00, 1000);
	// Progress to next level
	currentLevel++;
	if (currentLevel > maxLevel) {
		// Game completed
		LK.setTimeout(function () {
			LK.showYouWin();
		}, 1500);
	} else {
		// Save progress and start next level
		storage.currentLevel = currentLevel;
		LK.setTimeout(function () {
			setupLevel();
		}, 2000);
	}
}
function setupLevel() {
	// Clear existing cards
	for (var i = 0; i < cards.length; i++) {
		cards[i].destroy();
	}
	cards = [];
	flippedCards = [];
	matchedPairs = 0;
	moveCount = 0;
	gameActive = true;
	isProcessingMatch = false;
	// Update UI
	levelText.setText('Level ' + currentLevel);
	moveText.setText('Moves: 0');
	// Get level configuration
	var config = levelConfigs[currentLevel - 1];
	totalPairs = config.pairs;
	// Create card types array (pairs)
	var cardTypes = [];
	for (var i = 1; i <= config.pairs; i++) {
		cardTypes.push(i);
		cardTypes.push(i);
	}
	// Shuffle cards
	for (var i = cardTypes.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = cardTypes[i];
		cardTypes[i] = cardTypes[j];
		cardTypes[j] = temp;
	}
	// Calculate grid positioning
	var cardWidth = 200;
	var cardHeight = 250;
	var spacing = 40;
	var totalWidth = config.cols * cardWidth + (config.cols - 1) * spacing;
	var totalHeight = config.rows * cardHeight + (config.rows - 1) * spacing;
	var startX = (2048 - totalWidth) / 2 + cardWidth / 2;
	var startY = (2732 - totalHeight) / 2 + cardHeight / 2;
	// Create and position cards
	var cardIndex = 0;
	for (var row = 0; row < config.rows; row++) {
		for (var col = 0; col < config.cols; col++) {
			if (cardIndex < cardTypes.length) {
				var card = new Card(cardTypes[cardIndex]);
				card.x = startX + col * (cardWidth + spacing);
				card.y = startY + row * (cardHeight + spacing);
				cards.push(card);
				game.addChild(card);
				cardIndex++;
			}
		}
	}
}
// Initialize first level
setupLevel();
// Start background music
LK.playMusic('song', {
	loop: true
});
game.update = function () {
	// Game loop - currently no continuous updates needed
	// All game logic is event-driven
};

===================================================================
--- original.js
+++ change.js
@@ -302,8 +302,12 @@
 	}
 }
 // Initialize first level
 setupLevel();
+// Start background music
+LK.playMusic('song', {
+	loop: true
+});
 game.update = function () {
 	// Game loop - currently no continuous updates needed
 	// All game logic is event-driven
 };
\ No newline at end of file