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

/**** 
* Classes
****/ 
var FoodItem = Container.expand(function (foodType) {
	var self = Container.call(this);
	self.foodType = foodType;
	self.gridX = -1;
	self.gridY = -1;
	self.isMatched = false;
	self.isAnimating = false;
	var foodGraphics = self.attachAsset(foodType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.setGridPosition = function (gridX, gridY) {
		self.gridX = gridX;
		self.gridY = gridY;
		self.x = GRID_START_X + gridX * CELL_SIZE + CELL_SIZE / 2;
		self.y = GRID_START_Y + gridY * CELL_SIZE + CELL_SIZE / 2;
	};
	self.animateToPosition = function (targetX, targetY, callback) {
		self.isAnimating = true;
		tween(self, {
			x: targetX,
			y: targetY
		}, {
			duration: 300,
			easing: tween.easeOut,
			onFinish: function onFinish() {
				self.isAnimating = false;
				if (callback) callback();
			}
		});
	};
	self.animateMatch = function (callback) {
		self.isMatched = true;
		tween(self, {
			scaleX: 0,
			scaleY: 0,
			alpha: 0
		}, {
			duration: 200,
			easing: tween.easeIn,
			onFinish: callback
		});
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x2c1810
});

/**** 
* Game Code
****/ 
var GRID_SIZE = 8;
var CELL_SIZE = 240;
var GRID_START_X = (2048 - GRID_SIZE * CELL_SIZE) / 2;
var GRID_START_Y = 300;
var FOOD_TYPES = ['apple', 'banana', 'orange', 'grape', 'lemon'];
var grid = [];
var selectedFood = null;
var isProcessingMatches = false;
var movesLeft = 30;
var currentScore = 0;
var targetMatches = 10;
var matchesCleared = 0;
var swipeStartX = 0;
var swipeStartY = 0;
var swipeFood = null;
var isSwipeActive = false;
var SWIPE_THRESHOLD = 50;
var currentLevel = storage.currentLevel || 1;
var maxUnlockedLevel = storage.maxUnlockedLevel || 1;
var gameState = 'playing'; // 'playing', 'levelComplete', 'levelSelect'
var levelCompleteShown = false;
var usernameValue = '';
var usernameFocused = false;
var usernameText = null;
var passwordValue = '';
var passwordFocused = false;
var passwordText = null;
// Initialize grid array
for (var x = 0; x < GRID_SIZE; x++) {
	grid[x] = [];
	for (var y = 0; y < GRID_SIZE; y++) {
		grid[x][y] = null;
	}
}
// Create grid background
var gridBackground = new Container();
game.addChild(gridBackground);
for (var x = 0; x < GRID_SIZE; x++) {
	for (var y = 0; y < GRID_SIZE; y++) {
		var cell = LK.getAsset('gridCell', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		cell.x = GRID_START_X + x * CELL_SIZE + CELL_SIZE / 2;
		cell.y = GRID_START_Y + y * CELL_SIZE + CELL_SIZE / 2;
		cell.alpha = 0.3;
		gridBackground.addChild(cell);
	}
}
// Create UI
var scoreText = new Text2('Score: 0', {
	size: 100,
	fill: 0xFFFFFF
});
scoreText.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreText);
scoreText.y = 120;
var movesText = new Text2('Moves: 30', {
	size: 80,
	fill: 0xFFFFFF
});
movesText.anchor.set(0, 0);
LK.gui.topLeft.addChild(movesText);
movesText.x = 150;
movesText.y = 50;
var tutorialText = new Text2('Lvl' + currentLevel, {
	size: 120,
	fill: 0xFFFFFF
});
tutorialText.anchor.set(0.5, 0);
LK.gui.top.addChild(tutorialText);
tutorialText.y = 20;
var targetText = new Text2('Target: ' + targetMatches, {
	size: 100,
	fill: 0xFFFFFF
});
targetText.anchor.set(0, 0);
LK.gui.top.addChild(targetText);
targetText.x = tutorialText.x + tutorialText.width / 2 + 50;
targetText.y = tutorialText.y;
function getRandomFoodType() {
	return FOOD_TYPES[Math.floor(Math.random() * FOOD_TYPES.length)];
}
function createFoodItem(x, y) {
	var foodType = getRandomFoodType();
	var food = new FoodItem(foodType);
	food.setGridPosition(x, y);
	grid[x][y] = food;
	game.addChild(food);
	return food;
}
function initializeGrid() {
	for (var x = 0; x < GRID_SIZE; x++) {
		for (var y = 0; y < GRID_SIZE; y++) {
			createFoodItem(x, y);
		}
	}
	// Remove initial matches
	var foundMatches = true;
	while (foundMatches) {
		var matches = findAllMatches();
		if (matches.length > 0) {
			for (var i = 0; i < matches.length; i++) {
				var match = matches[i];
				if (grid[match.x] && grid[match.x][match.y]) {
					grid[match.x][match.y].destroy();
					grid[match.x][match.y] = null;
				}
			}
			fillEmptySpaces();
		} else {
			foundMatches = false;
		}
	}
}
function isValidPosition(x, y) {
	return x >= 0 && x < GRID_SIZE && y >= 0 && y < GRID_SIZE;
}
function isAdjacent(x1, y1, x2, y2) {
	var dx = Math.abs(x1 - x2);
	var dy = Math.abs(y1 - y2);
	return dx === 1 && dy === 0 || dx === 0 && dy === 1;
}
function swapFoods(food1, food2) {
	if (!food1 || !food2) return false;
	var x1 = food1.gridX;
	var y1 = food1.gridY;
	var x2 = food2.gridX;
	var y2 = food2.gridY;
	// Swap in grid
	grid[x1][y1] = food2;
	grid[x2][y2] = food1;
	// Update grid positions
	food1.setGridPosition(x2, y2);
	food2.setGridPosition(x1, y1);
	// Animate swap
	var targetX1 = GRID_START_X + x2 * CELL_SIZE + CELL_SIZE / 2;
	var targetY1 = GRID_START_Y + y2 * CELL_SIZE + CELL_SIZE / 2;
	var targetX2 = GRID_START_X + x1 * CELL_SIZE + CELL_SIZE / 2;
	var targetY2 = GRID_START_Y + y1 * CELL_SIZE + CELL_SIZE / 2;
	food1.animateToPosition(targetX1, targetY1);
	food2.animateToPosition(targetX2, targetY2);
	return true;
}
function findMatches(x, y) {
	var matches = [];
	if (!grid[x] || !grid[x][y]) return matches;
	var foodType = grid[x][y].foodType;
	// Check horizontal matches
	var horizontalMatches = [{
		x: x,
		y: y
	}];
	// Check left
	for (var i = x - 1; i >= 0; i--) {
		if (grid[i] && grid[i][y] && grid[i][y].foodType === foodType) {
			horizontalMatches.push({
				x: i,
				y: y
			});
		} else {
			break;
		}
	}
	// Check right
	for (var i = x + 1; i < GRID_SIZE; i++) {
		if (grid[i] && grid[i][y] && grid[i][y].foodType === foodType) {
			horizontalMatches.push({
				x: i,
				y: y
			});
		} else {
			break;
		}
	}
	if (horizontalMatches.length >= 3) {
		matches = matches.concat(horizontalMatches);
	}
	// Check vertical matches
	var verticalMatches = [{
		x: x,
		y: y
	}];
	// Check up
	for (var i = y - 1; i >= 0; i--) {
		if (grid[x] && grid[x][i] && grid[x][i].foodType === foodType) {
			verticalMatches.push({
				x: x,
				y: i
			});
		} else {
			break;
		}
	}
	// Check down
	for (var i = y + 1; i < GRID_SIZE; i++) {
		if (grid[x] && grid[x][i] && grid[x][i].foodType === foodType) {
			verticalMatches.push({
				x: x,
				y: i
			});
		} else {
			break;
		}
	}
	if (verticalMatches.length >= 3) {
		matches = matches.concat(verticalMatches);
	}
	return matches;
}
function findAllMatches() {
	var allMatches = [];
	var processed = {};
	for (var x = 0; x < GRID_SIZE; x++) {
		for (var y = 0; y < GRID_SIZE; y++) {
			if (grid[x] && grid[x][y] && !processed[x + ',' + y]) {
				var matches = findMatches(x, y);
				for (var i = 0; i < matches.length; i++) {
					var match = matches[i];
					var key = match.x + ',' + match.y;
					if (!processed[key]) {
						allMatches.push(match);
						processed[key] = true;
					}
				}
			}
		}
	}
	return allMatches;
}
function processMatches() {
	if (isProcessingMatches) return;
	var matches = findAllMatches();
	if (matches.length === 0) return;
	isProcessingMatches = true;
	LK.getSound('match').play();
	var matchCount = matches.length;
	currentScore += matchCount * 10;
	matchesCleared += matchCount;
	targetMatches = Math.max(0, targetMatches - 2);
	updateUI();
	var animationsCompleted = 0;
	for (var i = 0; i < matches.length; i++) {
		var match = matches[i];
		if (grid[match.x] && grid[match.x][match.y]) {
			grid[match.x][match.y].animateMatch(function () {
				animationsCompleted++;
				if (animationsCompleted === matchCount) {
					// Remove matched foods
					for (var j = 0; j < matches.length; j++) {
						var m = matches[j];
						if (grid[m.x] && grid[m.x][m.y]) {
							grid[m.x][m.y].destroy();
							grid[m.x][m.y] = null;
						}
					}
					fillEmptySpaces();
					LK.setTimeout(function () {
						isProcessingMatches = false;
						processMatches(); // Check for cascade matches
					}, 300);
				}
			});
		}
	}
	if (matchCount === 0) {
		isProcessingMatches = false;
	}
}
function fillEmptySpaces() {
	// Drop existing foods
	for (var x = 0; x < GRID_SIZE; x++) {
		var writeIndex = GRID_SIZE - 1;
		for (var y = GRID_SIZE - 1; y >= 0; y--) {
			if (grid[x][y] !== null) {
				if (y !== writeIndex) {
					grid[x][writeIndex] = grid[x][y];
					grid[x][y] = null;
					grid[x][writeIndex].setGridPosition(x, writeIndex);
					var targetY = GRID_START_Y + writeIndex * CELL_SIZE + CELL_SIZE / 2;
					grid[x][writeIndex].animateToPosition(grid[x][writeIndex].x, targetY);
				}
				writeIndex--;
			}
		}
		// Create new foods for empty spaces at top
		for (var y = 0; y <= writeIndex; y++) {
			var food = new FoodItem(getRandomFoodType());
			food.x = GRID_START_X + x * CELL_SIZE + CELL_SIZE / 2;
			food.y = GRID_START_Y - (writeIndex - y + 1) * CELL_SIZE + CELL_SIZE / 2;
			food.gridX = x;
			food.gridY = y;
			grid[x][y] = food;
			game.addChild(food);
			var targetY = GRID_START_Y + y * CELL_SIZE + CELL_SIZE / 2;
			food.animateToPosition(food.x, targetY);
		}
	}
}
function updateUI() {
	scoreText.setText('Score: ' + currentScore);
	movesText.setText('Moves: ' + movesLeft);
	targetText.setText('Target: ' + targetMatches);
}
function checkGameEnd() {
	if (matchesCleared >= targetMatches) {
		if (currentLevel === 1 && !levelCompleteShown) {
			showLevelComplete();
		} else {
			completeLevel();
		}
	} else if (movesLeft <= 0) {
		LK.showGameOver();
	}
}
function showLevelComplete() {
	levelCompleteShown = true;
	gameState = 'levelComplete';
	LK.setTimeout(function () {
		showWhiteScreen();
	}, 3000);
}
function showWhiteScreen() {
	gameState = 'whiteScreen';
	// Clear all game elements
	game.removeChildren();
	// Clear tutorial UI elements
	if (tutorialText && tutorialText.parent) {
		tutorialText.destroy();
		tutorialText = null;
	}
	if (targetText && targetText.parent) {
		targetText.destroy();
		targetText = null;
	}
	if (scoreText && scoreText.parent) {
		scoreText.destroy();
		scoreText = null;
	}
	if (movesText && movesText.parent) {
		movesText.destroy();
		movesText = null;
	}
	// Set white background
	game.setBackgroundColor(0xFFFFFF);
	// Show white screen for 2 seconds then show home screen
	LK.setTimeout(function () {
		showHomeScreen();
	}, 2000);
}
function showHomeScreen() {
	gameState = 'homeScreen';
	// Set green background for home screen
	game.setBackgroundColor(0x00FF00);
	// Clear all UI elements from the screen
	if (tutorialText && tutorialText.parent) {
		tutorialText.destroy();
		tutorialText = null;
	}
	if (targetText && targetText.parent) {
		targetText.destroy();
		targetText = null;
	}
	if (scoreText && scoreText.parent) {
		scoreText.destroy();
		scoreText = null;
	}
	if (movesText && movesText.parent) {
		movesText.destroy();
		movesText = null;
	}
	// Create buttons container
	var buttonsContainer = new Container();
	game.addChild(buttonsContainer);
	// Create Account button
	var createAccountButton = new Container();
	var createAccountBg = LK.getAsset('gridCell', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 0.8
	});
	createAccountBg.tint = 0x4CAF50; // Green tint
	createAccountButton.addChild(createAccountBg);
	var createAccountText = new Text2('Create Account', {
		size: 80,
		fill: 0xFFFFFF
	});
	createAccountText.anchor.set(0.5, 0.5);
	createAccountButton.addChild(createAccountText);
	createAccountButton.x = 1024;
	createAccountButton.y = 1200;
	createAccountButton.down = function () {
		// Handle create account action
		console.log('Create Account pressed');
		showCreateAccountScreen();
	};
	buttonsContainer.addChild(createAccountButton);
	// Play as Guest button
	var playAsGuestButton = new Container();
	var playAsGuestBg = LK.getAsset('gridCell', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 0.8
	});
	playAsGuestBg.tint = 0x2196F3; // Blue tint
	playAsGuestButton.addChild(playAsGuestBg);
	var playAsGuestText = new Text2('Play as Guest', {
		size: 80,
		fill: 0xFFFFFF
	});
	playAsGuestText.anchor.set(0.5, 0.5);
	playAsGuestButton.addChild(playAsGuestText);
	playAsGuestButton.x = 1024;
	playAsGuestButton.y = 1500;
	playAsGuestButton.down = function () {
		// Handle play as guest action
		console.log('Play as Guest pressed');
		// Start the game
		startLevel(1);
	};
	buttonsContainer.addChild(playAsGuestButton);
}
function showCreateAccountScreen() {
	gameState = 'createAccount';
	// Clear existing elements
	game.removeChildren();
	// Keep green background
	game.setBackgroundColor(0x00FF00);
	// Create container for account creation elements
	var accountContainer = new Container();
	game.addChild(accountContainer);
	// Title
	var titleText = new Text2('Create Account', {
		size: 120,
		fill: 0xFFFFFF
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.x = 1024;
	titleText.y = 400;
	accountContainer.addChild(titleText);
	// Username input field
	var usernameField = new Container();
	var usernameBg = LK.getAsset('inputField', {
		width: 720,
		height: 144,
		color: 0xFFFFFF,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	usernameField.addChild(usernameBg);
	usernameText = new Text2('Enter username...', {
		size: 60,
		fill: 0x666666
	});
	usernameText.anchor.set(0.5, 0.5);
	usernameField.addChild(usernameText);
	usernameField.x = 1024;
	usernameField.y = 800;
	usernameField.down = function () {
		usernameFocused = true;
		if (usernameValue === '') {
			usernameText.setText('|');
			usernameText.fill = 0x000000;
		}
		showCustomKeyboard();
	};
	accountContainer.addChild(usernameField);
	// Password input field
	var passwordField = new Container();
	var passwordBg = LK.getAsset('passwordField', {
		width: 720,
		height: 144,
		color: 0xFFFFFF,
		shape: 'box',
		anchorX: 0.5,
		anchorY: 0.5
	});
	passwordField.addChild(passwordBg);
	passwordField.x = 1024;
	passwordField.y = 1100;
	passwordText = new Text2('Enter password...', {
		size: 60,
		fill: 0x666666
	});
	passwordText.anchor.set(0.5, 0.5);
	passwordField.addChild(passwordText);
	// Password label beside the button
	var passwordLabel = new Text2('Password:', {
		size: 60,
		fill: 0x000000
	});
	passwordLabel.anchor.set(1, 0.5);
	passwordLabel.x = 1024 - 360 - 20; // Position to the left of the password field
	passwordLabel.y = 1100;
	accountContainer.addChild(passwordLabel);
	passwordField.down = function () {
		usernameFocused = false;
		passwordFocused = true;
		if (passwordValue === '') {
			passwordText.setText('|');
			passwordText.fill = 0x000000;
		}
		showCustomKeyboard();
	};
	accountContainer.addChild(passwordField);
	// Create Account button
	var createButton = new Container();
	var createBg = LK.getAsset('gridCell', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 0.8
	});
	createBg.tint = 0x4CAF50; // Green tint
	createButton.addChild(createBg);
	var createText = new Text2('Create', {
		size: 80,
		fill: 0xFFFFFF
	});
	createText.anchor.set(0.5, 0.5);
	createButton.addChild(createText);
	createButton.x = 1024;
	createButton.y = 1400;
	createButton.down = function () {
		// Handle account creation (for now just start the game)
		console.log('Account created');
		startLevel(1);
	};
	accountContainer.addChild(createButton);
	// Back button
	var backButton = new Container();
	var backBg = LK.getAsset('gridCell', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 0.6
	});
	backBg.tint = 0x757575; // Gray tint
	backButton.addChild(backBg);
	var backText = new Text2('Back', {
		size: 60,
		fill: 0xFFFFFF
	});
	backText.anchor.set(0.5, 0.5);
	backButton.addChild(backText);
	backButton.x = 1024;
	backButton.y = 1600;
	backButton.down = function () {
		showHomeScreen();
	};
	accountContainer.addChild(backButton);
}
var customKeyboard = null;
var keyboardKeys = [['Q', 'W', 'E', 'R', 'T', 'Y', 'U', 'I', 'O', 'P'], ['A', 'S', 'D', 'F', 'G', 'H', 'J', 'K', 'L'], ['Z', 'X', 'C', 'V', 'B', 'N', 'M']];
function showCustomKeyboard() {
	if (customKeyboard) {
		hideCustomKeyboard();
	}
	customKeyboard = new Container();
	game.addChild(customKeyboard);
	// Keyboard background
	var keyboardBg = LK.getAsset('gridCell', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 8,
		scaleY: 4
	});
	keyboardBg.tint = 0x333333;
	keyboardBg.x = 1024;
	keyboardBg.y = 2200;
	customKeyboard.addChild(keyboardBg);
	// Create keyboard keys
	var startY = 1900;
	var keySize = 180;
	var keySpacing = 200;
	for (var row = 0; row < keyboardKeys.length; row++) {
		var rowKeys = keyboardKeys[row];
		var rowWidth = rowKeys.length * keySpacing;
		var startX = 1024 - rowWidth / 2 + keySpacing / 2;
		for (var col = 0; col < rowKeys.length; col++) {
			var keyChar = rowKeys[col];
			var keyButton = createKeyButton(keyChar, keySize);
			keyButton.x = startX + col * keySpacing;
			keyButton.y = startY + row * 220;
			customKeyboard.addChild(keyButton);
		}
	}
	// Add space bar
	var spaceButton = createKeyButton(' ', keySize * 4);
	spaceButton.x = 1024;
	spaceButton.y = startY + keyboardKeys.length * 220;
	customKeyboard.addChild(spaceButton);
	// Add backspace button
	var backspaceButton = createKeyButton('⌫', keySize * 1.5);
	backspaceButton.x = 1024 + 400;
	backspaceButton.y = startY + keyboardKeys.length * 220;
	customKeyboard.addChild(backspaceButton);
	// Add done button
	var doneButton = createKeyButton('Done', keySize * 1.5);
	doneButton.x = 1024 - 400;
	doneButton.y = startY + keyboardKeys.length * 220;
	customKeyboard.addChild(doneButton);
}
function createKeyButton(keyChar, width) {
	var keyButton = new Container();
	var keyBg = LK.getAsset('gridCell', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: width / 240,
		scaleY: 0.5
	});
	keyBg.tint = 0xFF0000;
	keyButton.addChild(keyBg);
	var keyText = new Text2(keyChar === ' ' ? 'Space' : keyChar, {
		size: keyChar === 'Done' ? 70 : 90,
		fill: 0x000000
	});
	keyText.anchor.set(0.5, 0.5);
	keyButton.addChild(keyText);
	keyButton.down = function () {
		if (keyChar === 'Done') {
			hideCustomKeyboard();
			if (usernameFocused) {
				usernameFocused = false;
				if (usernameValue === '') {
					usernameText.setText('Enter username...');
					usernameText.fill = 0x666666;
				} else {
					usernameText.setText(usernameValue);
				}
			} else if (passwordFocused) {
				passwordFocused = false;
				if (passwordValue === '') {
					passwordText.setText('Enter password...');
					passwordText.fill = 0x666666;
				} else {
					passwordText.setText('*'.repeat(passwordValue.length));
				}
			}
		} else if (keyChar === '⌫') {
			if (usernameFocused && usernameValue.length > 0) {
				usernameValue = usernameValue.slice(0, -1);
				if (usernameValue === '') {
					usernameText.setText('|');
				} else {
					usernameText.setText(usernameValue + '|');
				}
			} else if (passwordFocused && passwordValue.length > 0) {
				passwordValue = passwordValue.slice(0, -1);
				if (passwordValue === '') {
					passwordText.setText('|');
				} else {
					passwordText.setText('*'.repeat(passwordValue.length) + '|');
				}
			}
		} else {
			if (usernameFocused && usernameValue.length < 20) {
				// Limit username length
				usernameValue += keyChar;
				usernameText.setText(usernameValue + '|');
			} else if (passwordFocused && passwordValue.length < 20) {
				// Limit password length
				if (passwordValue === '') {
					// Clear placeholder text when starting to type
					passwordText.fill = 0x000000;
				}
				passwordValue += keyChar;
				passwordText.setText('*'.repeat(passwordValue.length) + '|');
			}
		}
		// Visual feedback
		keyBg.tint = 0xCC0000;
		LK.setTimeout(function () {
			keyBg.tint = 0xFF0000;
		}, 100);
	};
	return keyButton;
}
function hideCustomKeyboard() {
	if (customKeyboard) {
		customKeyboard.destroy();
		customKeyboard = null;
	}
}
function completeLevel() {
	// Update progress
	if (currentLevel >= maxUnlockedLevel) {
		maxUnlockedLevel = currentLevel + 1;
		storage.maxUnlockedLevel = maxUnlockedLevel;
	}
	storage.currentLevel = currentLevel;
	// Show home screen instead of level select
	showHomeScreen();
}
function startLevel(levelNum) {
	currentLevel = levelNum;
	gameState = 'playing';
	levelCompleteShown = false;
	// Adjust difficulty based on level
	targetMatches = Math.min(10 + (levelNum - 1) * 5, 100);
	movesLeft = Math.max(30 - Math.floor((levelNum - 1) / 3), 15);
	currentScore = 0;
	matchesCleared = 0;
	// Clear existing UI
	game.removeChildren();
	// Recreate game
	setupGame();
}
function setupGame() {
	// Recreate grid background
	gridBackground = new Container();
	game.addChild(gridBackground);
	for (var x = 0; x < GRID_SIZE; x++) {
		for (var y = 0; y < GRID_SIZE; y++) {
			var cell = LK.getAsset('gridCell', {
				anchorX: 0.5,
				anchorY: 0.5
			});
			cell.x = GRID_START_X + x * CELL_SIZE + CELL_SIZE / 2;
			cell.y = GRID_START_Y + y * CELL_SIZE + CELL_SIZE / 2;
			cell.alpha = 0.3;
			gridBackground.addChild(cell);
		}
	}
	// Clear existing UI elements
	if (tutorialText && tutorialText.parent) {
		tutorialText.destroy();
	}
	if (targetText && targetText.parent) {
		targetText.destroy();
	}
	// Recreate UI elements if they don't exist
	if (!scoreText) {
		scoreText = new Text2('Score: 0', {
			size: 100,
			fill: 0xFFFFFF
		});
		scoreText.anchor.set(0.5, 0);
		LK.gui.top.addChild(scoreText);
		scoreText.y = 120;
	}
	if (!movesText) {
		movesText = new Text2('Moves: ' + movesLeft, {
			size: 80,
			fill: 0xFFFFFF
		});
		movesText.anchor.set(0, 0);
		LK.gui.topLeft.addChild(movesText);
		movesText.x = 150;
		movesText.y = 50;
	}
	// Update UI
	scoreText.setText('Score: 0');
	movesText.setText('Moves: ' + movesLeft);
	tutorialText = new Text2('Lvl' + currentLevel, {
		size: 120,
		fill: 0xFFFFFF
	});
	tutorialText.anchor.set(0.5, 0);
	LK.gui.top.addChild(tutorialText);
	tutorialText.y = 20;
	targetText = new Text2('Target: ' + targetMatches, {
		size: 100,
		fill: 0xFFFFFF
	});
	targetText.anchor.set(0, 0);
	LK.gui.top.addChild(targetText);
	targetText.x = tutorialText.x + tutorialText.width / 2 + 50;
	targetText.y = tutorialText.y;
	// Initialize grid
	initializeGrid();
	updateUI();
}
function getFoodAtPosition(x, y) {
	var gridX = Math.floor((x - GRID_START_X) / CELL_SIZE);
	var gridY = Math.floor((y - GRID_START_Y) / CELL_SIZE);
	if (isValidPosition(gridX, gridY) && grid[gridX] && grid[gridX][gridY]) {
		return grid[gridX][gridY];
	}
	return null;
}
game.down = function (x, y, obj) {
	if (isProcessingMatches) return;
	var food = getFoodAtPosition(x, y);
	if (food && !food.isAnimating) {
		swipeStartX = x;
		swipeStartY = y;
		swipeFood = food;
		isSwipeActive = true;
		swipeFood.alpha = 0.7;
	}
};
game.up = function (x, y, obj) {
	if (!isSwipeActive || !swipeFood) return;
	var deltaX = x - swipeStartX;
	var deltaY = y - swipeStartY;
	var swipeDistance = Math.sqrt(deltaX * deltaX + deltaY * deltaY);
	if (swipeDistance < SWIPE_THRESHOLD) {
		// Not a swipe, reset
		swipeFood.alpha = 1;
		isSwipeActive = false;
		swipeFood = null;
		return;
	}
	// Determine swipe direction
	var targetGridX = swipeFood.gridX;
	var targetGridY = swipeFood.gridY;
	var absDeltaX = Math.abs(deltaX);
	var absDeltaY = Math.abs(deltaY);
	if (absDeltaX > absDeltaY) {
		// Horizontal swipe
		if (deltaX > 0) {
			targetGridX++; // Swipe right
		} else {
			targetGridX--; // Swipe left
		}
	} else {
		// Vertical swipe
		if (deltaY > 0) {
			targetGridY++; // Swipe down
		} else {
			targetGridY--; // Swipe up
		}
	}
	// Check if target position is valid
	if (isValidPosition(targetGridX, targetGridY) && grid[targetGridX] && grid[targetGridX][targetGridY]) {
		var targetFood = grid[targetGridX][targetGridY];
		if (!targetFood.isAnimating) {
			LK.getSound('swap').play();
			// Store original positions BEFORE any swap
			var tempFood1 = swipeFood;
			var tempFood2 = targetFood;
			var originalX1 = tempFood1.gridX;
			var originalY1 = tempFood1.gridY;
			var originalX2 = tempFood2.gridX;
			var originalY2 = tempFood2.gridY;
			// Try swap
			swapFoods(tempFood1, tempFood2);
			LK.setTimeout(function () {
				var matches = findAllMatches();
				if (matches.length === 0) {
					// Invalid move, animate swap back to original positions
					var targetX1 = GRID_START_X + originalX1 * CELL_SIZE + CELL_SIZE / 2;
					var targetY1 = GRID_START_Y + originalY1 * CELL_SIZE + CELL_SIZE / 2;
					var targetX2 = GRID_START_X + originalX2 * CELL_SIZE + CELL_SIZE / 2;
					var targetY2 = GRID_START_Y + originalY2 * CELL_SIZE + CELL_SIZE / 2;
					tempFood1.animateToPosition(targetX1, targetY1);
					tempFood2.animateToPosition(targetX2, targetY2);
					// Restore original grid positions
					grid[originalX1][originalY1] = tempFood1;
					grid[originalX2][originalY2] = tempFood2;
					tempFood1.gridX = originalX1;
					tempFood1.gridY = originalY1;
					tempFood2.gridX = originalX2;
					tempFood2.gridY = originalY2;
				} else {
					// Valid move
					movesLeft--;
					updateUI();
					processMatches();
					checkGameEnd();
				}
			}, 350);
		}
	}
	// Reset swipe state
	swipeFood.alpha = 1;
	isSwipeActive = false;
	swipeFood = null;
};
// Initialize the game - start with home screen
showHomeScreen();

===================================================================
--- original.js
+++ change.js
@@ -676,9 +676,9 @@
 		anchorY: 0.5,
 		scaleX: width / 240,
 		scaleY: 0.5
 	});
-	keyBg.tint = 0xCCCCCC;
+	keyBg.tint = 0xFF0000;
 	keyButton.addChild(keyBg);
 	var keyText = new Text2(keyChar === ' ' ? 'Space' : keyChar, {
 		size: keyChar === 'Done' ? 70 : 90,
 		fill: 0x000000
@@ -736,11 +736,11 @@
 				passwordText.setText('*'.repeat(passwordValue.length) + '|');
 			}
 		}
 		// Visual feedback
-		keyBg.tint = 0xAAAAAA;
+		keyBg.tint = 0xCC0000;
 		LK.setTimeout(function () {
-			keyBg.tint = 0xCCCCCC;
+			keyBg.tint = 0xFF0000;
 		}, 100);
 	};
 	return keyButton;
 }