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

/**** 
* Classes
****/ 
var Card = Container.expand(function (symbolType) {
	var self = Container.call(this);
	self.symbolType = symbolType;
	self.isFlipped = false;
	self.isMatched = false;
	self.canFlip = true;
	// Card back (always visible when not flipped)
	var cardBack = self.attachAsset('cardBack', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Card front (white background)
	var cardFront = self.attachAsset('cardFront', {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	// Symbol on the card
	var symbol = self.attachAsset('symbol' + symbolType, {
		anchorX: 0.5,
		anchorY: 0.5,
		alpha: 0
	});
	self.flip = function () {
		if (!self.canFlip || self.isMatched) return;
		LK.getSound('cardFlip').play();
		self.isFlipped = !self.isFlipped;
		if (self.isFlipped) {
			// Show front and symbol
			tween(cardFront, {
				alpha: 1
			}, {
				duration: 200
			});
			tween(symbol, {
				alpha: 1
			}, {
				duration: 200
			});
		} else {
			// Hide front and symbol
			tween(cardFront, {
				alpha: 0
			}, {
				duration: 200
			});
			tween(symbol, {
				alpha: 0
			}, {
				duration: 200
			});
		}
	};
	self.setMatched = function () {
		self.isMatched = true;
		self.canFlip = false;
		// Add a subtle scale effect for matched cards
		tween(self, {
			scaleX: 1.1,
			scaleY: 1.1
		}, {
			duration: 300,
			easing: tween.easeOut
		});
	};
	self.down = function (x, y, obj) {
		if (self.canFlip && !self.isFlipped && !self.isMatched) {
			handleCardTap(self);
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2c3e50
});

/**** 
* Game Code
****/ 
// Game variables
var cards = [];
var flippedCards = [];
var moves = 0;
var startTime = Date.now();
var gameCompleted = false;
var canFlipCards = true;
var currentLevel = storage.currentLevel || 1;
var gameStartTime = Date.now();
var LEVEL_TIME_LIMIT = 120; // 2 minutes in seconds
var MOVE_LIMIT = 15;
var gameOver = false;
// Grid configuration
var GRID_COLS = 4;
var GRID_ROWS = 4;
var CARD_SIZE = 200;
var CARD_SPACING = 20;
// UI elements
var movesTxt = new Text2('Moves: 0', {
	size: 60,
	fill: 0xFFFFFF
});
movesTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(movesTxt);
movesTxt.y = 100;
var timerTxt = new Text2('Time: 0:00', {
	size: 60,
	fill: 0xFFFFFF
});
timerTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(timerTxt);
timerTxt.y = 180;
// Initialize coins from storage
var coins = storage.coins || 0;
var coinsTxt = new Text2('Coins: ' + coins, {
	size: 60,
	fill: 0xFFD700
});
coinsTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(coinsTxt);
coinsTxt.y = 260;
var levelTxt = new Text2('Level: ' + currentLevel, {
	size: 60,
	fill: 0xFFFFFF
});
levelTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(levelTxt);
levelTxt.y = 340;
// Power-up UI elements
var bombTxt = new Text2('Bomb (10 coins)', {
	size: 40,
	fill: 0xFF6B6B
});
bombTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(bombTxt);
bombTxt.x = 120;
bombTxt.y = 100;
var lightbulbTxt = new Text2('Hint (15 coins)', {
	size: 40,
	fill: 0xFFD700
});
lightbulbTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(lightbulbTxt);
lightbulbTxt.x = 120;
lightbulbTxt.y = 160;
var clockTxt = new Text2('Clock (20 coins)', {
	size: 40,
	fill: 0x4ECDC4
});
clockTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(clockTxt);
clockTxt.x = 120;
clockTxt.y = 220;
var timerPowerTxt = new Text2('Timer (5 coins)', {
	size: 40,
	fill: 0x96CEB4
});
timerPowerTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(timerPowerTxt);
timerPowerTxt.x = 120;
timerPowerTxt.y = 280;
var skipTxt = new Text2('Skip (100 coins)', {
	size: 40,
	fill: 0xFF9FF3
});
skipTxt.anchor.set(0, 0);
LK.gui.topLeft.addChild(skipTxt);
skipTxt.x = 120;
skipTxt.y = 340;
// Create card types array based on level (4 tiles for first level + 6 tiles per additional level)
var totalTiles = 4 + (currentLevel - 1) * 6; // 4 base tiles + 6 per level
var pairCount = totalTiles / 2;
var cardTypes = [];
for (var i = 1; i <= pairCount; i++) {
	var symbolIndex = (i - 1) % 8 + 1; // Cycle through available symbols
	cardTypes.push(symbolIndex);
	cardTypes.push(symbolIndex); // Add pair
}
// Shuffle function
function shuffleArray(array) {
	for (var i = array.length - 1; i > 0; i--) {
		var j = Math.floor(Math.random() * (i + 1));
		var temp = array[i];
		array[i] = array[j];
		array[j] = temp;
	}
	return array;
}
// Initialize cards
function initializeCards() {
	var shuffledTypes = shuffleArray(cardTypes);
	// Calculate dynamic grid size based on total tiles
	var totalTiles = cardTypes.length;
	GRID_COLS = Math.ceil(Math.sqrt(totalTiles));
	GRID_ROWS = Math.ceil(totalTiles / GRID_COLS);
	// Adjust card size based on grid size
	if (totalTiles > 16) {
		CARD_SIZE = Math.max(120, 200 - (totalTiles - 16) * 5);
		CARD_SPACING = Math.max(10, 20 - (totalTiles - 16) * 1);
	}
	// Calculate grid positioning
	var gridWidth = GRID_COLS * CARD_SIZE + (GRID_COLS - 1) * CARD_SPACING;
	var gridHeight = GRID_ROWS * CARD_SIZE + (GRID_ROWS - 1) * CARD_SPACING;
	var startX = (2048 - gridWidth) / 2 + CARD_SIZE / 2;
	var startY = (2732 - gridHeight) / 2 + CARD_SIZE / 2;
	for (var i = 0; i < totalTiles; i++) {
		var row = Math.floor(i / GRID_COLS);
		var col = i % GRID_COLS;
		var card = new Card(shuffledTypes[i]);
		card.x = startX + col * (CARD_SIZE + CARD_SPACING);
		card.y = startY + row * (CARD_SIZE + CARD_SPACING);
		cards.push(card);
		game.addChild(card);
	}
}
// Handle card tap
function handleCardTap(card) {
	if (!canFlipCards || flippedCards.length >= 2 || gameOver) return;
	card.flip();
	flippedCards.push(card);
	if (flippedCards.length === 2) {
		moves++;
		movesTxt.setText('Moves: ' + moves);
		// Check if move limit exceeded
		if (moves >= MOVE_LIMIT) {
			gameOver = true;
			LK.setTimeout(function () {
				LK.showGameOver();
			}, 1000);
			return;
		}
		canFlipCards = false;
		// Check for match after a short delay
		LK.setTimeout(function () {
			checkForMatch();
		}, 1000);
	}
}
// Check if two flipped cards match
function checkForMatch() {
	var card1 = flippedCards[0];
	var card2 = flippedCards[1];
	if (card1.symbolType === card2.symbolType) {
		// Match found
		LK.getSound('match').play();
		card1.setMatched();
		card2.setMatched();
		// Award 5 coins for matching pair
		coins += 5;
		storage.coins = coins;
		coinsTxt.setText('Coins: ' + coins);
		// Check if game is complete
		var matchedCount = 0;
		for (var i = 0; i < cards.length; i++) {
			if (cards[i].isMatched) {
				matchedCount++;
			}
		}
		if (matchedCount === cards.length) {
			gameCompleted = true;
			// Check if we've completed all 500 levels
			if (currentLevel >= 500) {
				// Show you win when all levels are completed
				LK.setTimeout(function () {
					LK.showYouWin();
				}, 1000);
			} else {
				// Advance to next level
				currentLevel++;
				storage.currentLevel = currentLevel; // Save current level to storage
				levelTxt.setText('Level: ' + currentLevel);
				// Reset for next level
				LK.setTimeout(function () {
					resetLevel();
				}, 1000);
			}
		}
	} else {
		// No match
		LK.getSound('noMatch').play();
		card1.flip();
		card2.flip();
	}
	flippedCards = [];
	canFlipCards = true;
}
// Reset level for progression
function resetLevel() {
	// Clear existing cards
	for (var i = 0; i < cards.length; i++) {
		cards[i].destroy();
	}
	cards = [];
	flippedCards = [];
	moves = 0;
	gameCompleted = false;
	canFlipCards = true;
	gameOver = false;
	gameStartTime = Date.now();
	startTime = Date.now();
	// Update UI
	movesTxt.setText('Moves: 0');
	timerTxt.setText('Time: 0:00');
	// Recreate card types for new level
	var totalTiles = 4 + (currentLevel - 1) * 6;
	var pairCount = totalTiles / 2;
	cardTypes = [];
	for (var i = 1; i <= pairCount; i++) {
		var symbolIndex = (i - 1) % 8 + 1;
		cardTypes.push(symbolIndex);
		cardTypes.push(symbolIndex);
	}
	// Initialize new cards
	initializeCards();
}
// Format time display
function formatTime(seconds) {
	var minutes = Math.floor(seconds / 60);
	var remainingSeconds = seconds % 60;
	return minutes + ':' + (remainingSeconds < 10 ? '0' : '') + remainingSeconds;
}
// Power-up functions
function useBomb() {
	if (coins >= 10) {
		coins -= 10;
		storage.coins = coins;
		coinsTxt.setText('Coins: ' + coins);
		// Delete 6 random non-matched cards
		var availableCards = [];
		for (var i = 0; i < cards.length; i++) {
			if (!cards[i].isMatched) {
				availableCards.push(cards[i]);
			}
		}
		var cardsToRemove = Math.min(6, availableCards.length);
		for (var i = 0; i < cardsToRemove; i++) {
			var randomIndex = Math.floor(Math.random() * availableCards.length);
			var cardToRemove = availableCards[randomIndex];
			cardToRemove.destroy();
			cards.splice(cards.indexOf(cardToRemove), 1);
			availableCards.splice(randomIndex, 1);
		}
	}
}
function useLightbulb() {
	if (coins >= 15) {
		coins -= 15;
		storage.coins = coins;
		coinsTxt.setText('Coins: ' + coins);
		// Find a matching pair that's not matched yet
		var unmatchedCards = [];
		for (var i = 0; i < cards.length; i++) {
			if (!cards[i].isMatched) {
				unmatchedCards.push(cards[i]);
			}
		}
		// Group by symbol type
		var symbolGroups = {};
		for (var i = 0; i < unmatchedCards.length; i++) {
			var card = unmatchedCards[i];
			if (!symbolGroups[card.symbolType]) {
				symbolGroups[card.symbolType] = [];
			}
			symbolGroups[card.symbolType].push(card);
		}
		// Find first pair and show them
		for (var symbolType in symbolGroups) {
			if (symbolGroups[symbolType].length >= 2) {
				var pair = symbolGroups[symbolType].slice(0, 2);
				for (var i = 0; i < pair.length; i++) {
					if (!pair[i].isFlipped) {
						pair[i].flip();
					}
				}
				break;
			}
		}
	}
}
function useClock() {
	if (coins >= 20) {
		coins -= 20;
		storage.coins = coins;
		coinsTxt.setText('Coins: ' + coins);
		// Add 5 minutes (300 seconds) to game time
		gameStartTime -= 300000; // Subtract 5 minutes from start time to effectively add time
	}
}
function useTimer() {
	if (coins >= 5) {
		coins -= 5;
		storage.coins = coins;
		coinsTxt.setText('Coins: ' + coins);
		// Add 1 minute (60 seconds) to game time
		gameStartTime -= 60000; // Subtract 1 minute from start time to effectively add time
	}
}
function useSkip() {
	if (coins >= 100) {
		coins -= 100;
		storage.coins = coins;
		coinsTxt.setText('Coins: ' + coins);
		// Check if we've completed all 500 levels
		if (currentLevel >= 500) {
			// Show you win when all levels are completed
			LK.setTimeout(function () {
				LK.showYouWin();
			}, 1000);
		} else {
			// Advance to next level
			currentLevel++;
			storage.currentLevel = currentLevel; // Save current level to storage
			levelTxt.setText('Level: ' + currentLevel);
			// Reset for next level
			LK.setTimeout(function () {
				resetLevel();
			}, 1000);
		}
	}
}
// Add click handlers for power-ups
bombTxt.down = function (x, y, obj) {
	useBomb();
};
lightbulbTxt.down = function (x, y, obj) {
	useLightbulb();
};
clockTxt.down = function (x, y, obj) {
	useClock();
};
timerPowerTxt.down = function (x, y, obj) {
	useTimer();
};
skipTxt.down = function (x, y, obj) {
	useSkip();
};
// Initialize the game
initializeCards();
// Main game update loop
game.update = function () {
	// Update timer
	if (!gameCompleted && !gameOver) {
		var elapsedTime = Math.floor((Date.now() - gameStartTime) / 1000);
		var remainingTime = Math.max(0, LEVEL_TIME_LIMIT - elapsedTime);
		timerTxt.setText('Time: ' + formatTime(remainingTime));
		// Check if time is up
		if (remainingTime <= 0) {
			gameOver = true;
			LK.showGameOver();
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -170,8 +170,16 @@
 timerPowerTxt.anchor.set(0, 0);
 LK.gui.topLeft.addChild(timerPowerTxt);
 timerPowerTxt.x = 120;
 timerPowerTxt.y = 280;
+var skipTxt = new Text2('Skip (100 coins)', {
+	size: 40,
+	fill: 0xFF9FF3
+});
+skipTxt.anchor.set(0, 0);
+LK.gui.topLeft.addChild(skipTxt);
+skipTxt.x = 120;
+skipTxt.y = 340;
 // Create card types array based on level (4 tiles for first level + 6 tiles per additional level)
 var totalTiles = 4 + (currentLevel - 1) * 6; // 4 base tiles + 6 per level
 var pairCount = totalTiles / 2;
 var cardTypes = [];
@@ -398,8 +406,31 @@
 		// Add 1 minute (60 seconds) to game time
 		gameStartTime -= 60000; // Subtract 1 minute from start time to effectively add time
 	}
 }
+function useSkip() {
+	if (coins >= 100) {
+		coins -= 100;
+		storage.coins = coins;
+		coinsTxt.setText('Coins: ' + coins);
+		// Check if we've completed all 500 levels
+		if (currentLevel >= 500) {
+			// Show you win when all levels are completed
+			LK.setTimeout(function () {
+				LK.showYouWin();
+			}, 1000);
+		} else {
+			// Advance to next level
+			currentLevel++;
+			storage.currentLevel = currentLevel; // Save current level to storage
+			levelTxt.setText('Level: ' + currentLevel);
+			// Reset for next level
+			LK.setTimeout(function () {
+				resetLevel();
+			}, 1000);
+		}
+	}
+}
 // Add click handlers for power-ups
 bombTxt.down = function (x, y, obj) {
 	useBomb();
 };
@@ -411,8 +442,11 @@
 };
 timerPowerTxt.down = function (x, y, obj) {
 	useTimer();
 };
+skipTxt.down = function (x, y, obj) {
+	useSkip();
+};
 // Initialize the game
 initializeCards();
 // Main game update loop
 game.update = function () {