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

/**** 
* Classes
****/ 
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.velocity = 0;
	self.gravity = 0.8;
	self.jumpStrength = -12;
	self.flap = function () {
		self.velocity = self.jumpStrength;
		LK.getSound('flap').play();
	};
	self.update = function () {
		if (!gameStarted) {
			// Don't apply physics before game starts - keep bird completely still
			self.velocity = 0;
			self.y = 1366; // Keep bird at starting position
			birdGraphics.rotation = 0; // Keep bird level
			return;
		}
		self.velocity += self.gravity;
		self.y += self.velocity;
		// Rotate bird based on velocity
		birdGraphics.rotation = Math.max(-0.5, Math.min(1.5, self.velocity * 0.1));
		// Limit bird movement to screen bounds
		if (self.y < 30) {
			self.y = 30;
		}
	};
	return self;
});
var Pipe = Container.expand(function (gapCenterY) {
	var self = Container.call(this);
	self.gapSize = 600;
	self.speed = -3;
	self.passed = false;
	self.gapCenterY = gapCenterY;
	// Create top pipe
	var topPipe = self.attachAsset('topPipe', {
		anchorX: 0.5,
		anchorY: 1
	});
	topPipe.y = gapCenterY - self.gapSize / 2;
	// Set reasonable height for top pipe (minimum 200px, maximum based on gap position)
	var topPipeHeight = Math.max(200, gapCenterY - self.gapSize / 2);
	topPipe.height = topPipeHeight;
	// Create bottom pipe
	var bottomPipe = self.attachAsset('bottomPipe', {
		anchorX: 0.5,
		anchorY: 0
	});
	bottomPipe.y = gapCenterY + self.gapSize / 2;
	// Set reasonable height for bottom pipe (minimum 200px, maximum based on available space)
	var bottomPipeHeight = Math.max(200, 2732 - 150 - (gapCenterY + self.gapSize / 2));
	bottomPipe.height = bottomPipeHeight;
	self.update = function () {
		if (!gameStarted) {
			// Don't move pipes before game starts
			return;
		}
		self.x += self.speed;
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game();

/**** 
* Game Code
****/ 
// Game variables
var bird;
var pipes = [];
var ground;
var topBarrier;
var bottomBarrier;
var gameStarted = false;
var gameOver = false;
var showMainMenu = true;
var showLeaderboard = false;
var pipeSpacing = 500; // Increased spacing between pipes to make them further apart
// Create score display
var scoreTxt = new Text2('SKOR: 0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
scoreTxt.stroke = 0x000000;
scoreTxt.strokeThickness = 4;
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 100;
// Create username background panel
var usernamePanel = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 500,
	height: 90,
	alpha: 0.9
});
usernamePanel.tint = 0x4B0082;
LK.gui.center.addChild(usernamePanel);
usernamePanel.y = -100;
// Create username display
var usernameText = new Text2('', {
	size: 60,
	fill: 0x00FF00
});
usernameText.anchor.set(0.5, 0.5);
usernameText.stroke = 0x000000;
usernameText.strokeThickness = 3;
LK.gui.center.addChild(usernameText);
usernameText.y = -100;
// Create main menu elements
var mainMenuTitle = new Text2('FLAPPY BIRD', {
	size: 100,
	fill: 0xFFD700
});
mainMenuTitle.anchor.set(0.5, 0.5);
mainMenuTitle.stroke = 0x000000;
mainMenuTitle.strokeThickness = 5;
LK.gui.center.addChild(mainMenuTitle);
mainMenuTitle.y = -200;
// Create play button
var playButton = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 300,
	height: 80,
	alpha: 0.9
});
playButton.tint = 0xFF4500;
LK.gui.center.addChild(playButton);
playButton.y = 50;
var playButtonText = new Text2('OYNA', {
	size: 50,
	fill: 0xFFFFFF
});
playButtonText.anchor.set(0.5, 0.5);
playButtonText.stroke = 0x000000;
playButtonText.strokeThickness = 3;
LK.gui.center.addChild(playButtonText);
playButtonText.y = 50;
// Create score button
var scoreButton = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 300,
	height: 80,
	alpha: 0.9
});
scoreButton.tint = 0x9370DB;
LK.gui.center.addChild(scoreButton);
scoreButton.y = 150;
var scoreButtonText = new Text2('SKOR', {
	size: 50,
	fill: 0xFFFFFF
});
scoreButtonText.anchor.set(0.5, 0.5);
scoreButtonText.stroke = 0x000000;
scoreButtonText.strokeThickness = 3;
LK.gui.center.addChild(scoreButtonText);
scoreButtonText.y = 150;
// Create instruction text
var instructionTxt = new Text2('TIKLA VE OYNA!', {
	size: 60,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
instructionTxt.stroke = 0x000000;
instructionTxt.strokeThickness = 3;
instructionTxt.visible = false;
// Add background shape for instruction text
var instructionBg = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 400,
	height: 100,
	alpha: 0.8
});
instructionBg.tint = 0x8B0000;
instructionBg.visible = false;
LK.gui.center.addChild(instructionBg);
LK.gui.center.addChild(instructionTxt);
// Create leaderboard background
var leaderboardBg = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 1800,
	height: 2200,
	alpha: 0.95
});
leaderboardBg.tint = 0x2F4F4F;
leaderboardBg.visible = false;
LK.gui.center.addChild(leaderboardBg);
// Create leaderboard elements
var leaderboardTitle = new Text2('SKOR TABLOSU', {
	size: 80,
	fill: 0xFFD700
});
leaderboardTitle.anchor.set(0.5, 0.5);
leaderboardTitle.stroke = 0x000000;
leaderboardTitle.strokeThickness = 4;
leaderboardTitle.visible = false;
LK.gui.center.addChild(leaderboardTitle);
leaderboardTitle.y = -350;
var highScoreText = new Text2('EN YÜKSEK SKOR: 0', {
	size: 50,
	fill: 0xFFFFFF
});
highScoreText.anchor.set(0.5, 0.5);
highScoreText.stroke = 0x000000;
highScoreText.strokeThickness = 3;
highScoreText.visible = false;
LK.gui.center.addChild(highScoreText);
highScoreText.y = -250;
var currentScoreText = new Text2('SON SKOR: 0', {
	size: 50,
	fill: 0xFFFFFF
});
currentScoreText.anchor.set(0.5, 0.5);
currentScoreText.stroke = 0x000000;
currentScoreText.strokeThickness = 3;
currentScoreText.visible = false;
LK.gui.center.addChild(currentScoreText);
currentScoreText.y = -180;
// Create back button for leaderboard
var backButton = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 300,
	height: 80,
	alpha: 0.9
});
backButton.tint = 0xDC143C;
backButton.visible = false;
LK.gui.center.addChild(backButton);
backButton.y = 350;
var backButtonText = new Text2('GERİ', {
	size: 50,
	fill: 0xFFFFFF
});
backButtonText.anchor.set(0.5, 0.5);
backButtonText.stroke = 0x000000;
backButtonText.strokeThickness = 3;
backButtonText.visible = false;
LK.gui.center.addChild(backButtonText);
backButtonText.y = 350;
// Create pagination buttons
var prevPageButton = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 200,
	height: 60,
	alpha: 0.9
});
prevPageButton.tint = 0x20B2AA;
prevPageButton.visible = false;
LK.gui.center.addChild(prevPageButton);
prevPageButton.y = 280;
prevPageButton.x = -300;
var prevPageText = new Text2('ÖNCEKİ', {
	size: 35,
	fill: 0xFFFFFF
});
prevPageText.anchor.set(0.5, 0.5);
prevPageText.stroke = 0x000000;
prevPageText.strokeThickness = 2;
prevPageText.visible = false;
LK.gui.center.addChild(prevPageText);
prevPageText.y = 280;
prevPageText.x = -300;
var nextPageButton = LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0.5,
	width: 200,
	height: 60,
	alpha: 0.9
});
nextPageButton.tint = 0x20B2AA;
nextPageButton.visible = false;
LK.gui.center.addChild(nextPageButton);
nextPageButton.y = 280;
nextPageButton.x = 300;
var nextPageText = new Text2('SONRAKİ', {
	size: 35,
	fill: 0xFFFFFF
});
nextPageText.anchor.set(0.5, 0.5);
nextPageText.stroke = 0x000000;
nextPageText.strokeThickness = 2;
nextPageText.visible = false;
LK.gui.center.addChild(nextPageText);
nextPageText.y = 280;
nextPageText.x = 300;
// Create page indicator
var pageIndicator = new Text2('SAYFA 1/10', {
	size: 40,
	fill: 0xFFFFFF
});
pageIndicator.anchor.set(0.5, 0.5);
pageIndicator.stroke = 0x000000;
pageIndicator.strokeThickness = 2;
pageIndicator.visible = false;
LK.gui.center.addChild(pageIndicator);
pageIndicator.y = 280;
// Create invisible barrier blocks to constrain bird before game starts
var topBarrier = game.addChild(LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 1
}));
topBarrier.x = 400;
topBarrier.y = 1316; // 50 pixels above bird
topBarrier.alpha = 0; // Make invisible
var bottomBarrier = game.addChild(LK.getAsset('barrier', {
	anchorX: 0.5,
	anchorY: 0
}));
bottomBarrier.x = 400;
bottomBarrier.y = 1416; // 50 pixels below bird
bottomBarrier.alpha = 0; // Make invisible
// Create and add background image (appears behind barriers but in front of other elements)
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0,
	anchorY: 0
}));
background.x = 0;
background.y = 0;
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 1
}));
ground.x = 0;
ground.y = 2732;
ground.tint = 0x654321;
// Create bird
bird = game.addChild(new Bird());
bird.x = 400;
bird.y = 1366;
// Create pipe function
function createPipe() {
	// Define safe boundaries for gap center to ensure both pipes have reasonable heights
	var minGapY = 800; // Minimum gap center position (ensures top pipe has decent height)
	var maxGapY = 1800; // Maximum gap center position (ensures bottom pipe has decent height)
	var gapCenterY = minGapY + Math.random() * (maxGapY - minGapY);
	var pipe = new Pipe(gapCenterY);
	// Calculate position based on last pipe position + consistent spacing
	if (pipes.length === 0) {
		pipe.x = 2048 + 200; // First pipe position
	} else {
		pipe.x = pipes[pipes.length - 1].x + pipeSpacing; // Consistent spacing from last pipe
	}
	pipes.push(pipe);
	game.addChild(pipe);
}
// Reset game function
function resetGame() {
	// Reset bird
	bird.x = 400;
	bird.y = 1366;
	bird.velocity = 0;
	// Clear pipes
	for (var i = pipes.length - 1; i >= 0; i--) {
		pipes[i].destroy();
	}
	pipes = [];
	// Reset variables
	gameStarted = false;
	gameOver = false;
	showMainMenu = true;
	showLeaderboard = false;
	LK.setScore(0);
	scoreTxt.setText('SKOR: 0');
	// Show main menu
	usernamePanel.visible = true;
	usernameText.visible = true;
	mainMenuTitle.visible = true;
	playButton.visible = true;
	playButtonText.visible = true;
	scoreButton.visible = true;
	scoreButtonText.visible = true;
	// Hide instruction
	instructionTxt.visible = false;
	instructionBg.visible = false;
	// Hide leaderboard elements
	leaderboardBg.visible = false;
	leaderboardTitle.visible = false;
	highScoreText.visible = false;
	currentScoreText.visible = false;
	backButton.visible = false;
	backButtonText.visible = false;
	// Clear existing barriers if they exist
	if (topBarrier) {
		topBarrier.destroy();
		topBarrier = null;
	}
	if (bottomBarrier) {
		bottomBarrier.destroy();
		bottomBarrier = null;
	}
	// Recreate invisible barriers
	topBarrier = game.addChild(LK.getAsset('barrier', {
		anchorX: 0.5,
		anchorY: 1
	}));
	topBarrier.x = 400;
	topBarrier.y = 1316; // 50 pixels above bird
	topBarrier.alpha = 0; // Make invisible
	bottomBarrier = game.addChild(LK.getAsset('barrier', {
		anchorX: 0.5,
		anchorY: 0
	}));
	bottomBarrier.x = 400;
	bottomBarrier.y = 1416; // 50 pixels below bird
	bottomBarrier.alpha = 0; // Make invisible
	// Create initial pipes
	createPipe();
	createPipe();
}
// Function to start game from main menu
function startGameFromMenu() {
	showMainMenu = false;
	// Hide main menu elements
	usernamePanel.visible = false;
	usernameText.visible = false;
	mainMenuTitle.visible = false;
	playButton.visible = false;
	playButtonText.visible = false;
	scoreButton.visible = false;
	scoreButtonText.visible = false;
	// Show instruction
	instructionTxt.visible = true;
	instructionBg.visible = true;
}
// Create global leaderboard display elements
var globalLeaderboardText = new Text2('GLOBAL LIDERLER:', {
	size: 50,
	fill: 0xFFD700
});
globalLeaderboardText.anchor.set(0.5, 0.5);
globalLeaderboardText.stroke = 0x000000;
globalLeaderboardText.strokeThickness = 3;
globalLeaderboardText.visible = false;
LK.gui.center.addChild(globalLeaderboardText);
globalLeaderboardText.y = -80;
var globalScoresList = [];
for (var i = 0; i < 5; i++) {
	var scoreText = new Text2('', {
		size: 40,
		fill: 0xFFFFFF
	});
	scoreText.anchor.set(0.5, 0.5);
	scoreText.stroke = 0x000000;
	scoreText.strokeThickness = 2;
	scoreText.visible = false;
	LK.gui.center.addChild(scoreText);
	scoreText.y = -10 + i * 50;
	globalScoresList.push(scoreText);
}
// Function to show leaderboard
function showLeaderboardScreen() {
	showMainMenu = false;
	showLeaderboard = true;
	// Hide main menu elements
	usernamePanel.visible = false;
	usernameText.visible = false;
	mainMenuTitle.visible = false;
	playButton.visible = false;
	playButtonText.visible = false;
	scoreButton.visible = false;
	scoreButtonText.visible = false;
	// Show leaderboard elements
	leaderboardBg.visible = true;
	leaderboardTitle.visible = true;
	highScoreText.visible = true;
	currentScoreText.visible = true;
	backButton.visible = true;
	backButtonText.visible = true;
	globalLeaderboardText.visible = true;
	prevPageButton.visible = true;
	prevPageText.visible = true;
	nextPageButton.visible = true;
	nextPageText.visible = true;
	pageIndicator.visible = true;
	// Update score displays
	highScoreText.setText('EN YÜKSEK SKOR: ' + (storage.highScore || 0));
	currentScoreText.setText('SON SKOR: ' + (storage.lastScore || 0));
	// Get global leaderboard from storage
	var globalNames = storage.globalLeaderboardNames || [];
	var globalScores = storage.globalLeaderboardScores || [];
	// Add current player's high score if it doesn't exist and is greater than 0
	var playerExists = false;
	var currentUsername = storage.username || 'Oyuncu';
	for (var i = 0; i < globalNames.length; i++) {
		if (globalNames[i] === currentUsername) {
			globalScores[i] = Math.max(globalScores[i], highScore);
			playerExists = true;
			break;
		}
	}
	var highScore = storage.highScore || 0;
	if (!playerExists && highScore > 0) {
		globalNames.push(currentUsername);
		globalScores.push(highScore);
	}
	// Sort scores in descending order by creating index array
	var indices = [];
	for (var i = 0; i < globalScores.length; i++) {
		indices.push(i);
	}
	indices.sort(function (a, b) {
		return globalScores[b] - globalScores[a];
	});
	// Create sorted arrays
	var sortedNames = [];
	var sortedScores = [];
	for (var i = 0; i < indices.length; i++) {
		sortedNames.push(globalNames[indices[i]]);
		sortedScores.push(globalScores[indices[i]]);
	}
	// Save updated leaderboard
	storage.globalLeaderboardNames = sortedNames;
	storage.globalLeaderboardScores = sortedScores;
	// Initialize current page if not exists
	if (!storage.leaderboardPage) {
		storage.leaderboardPage = 0;
	}
	// Display global scores with pagination (10 per page)
	var currentPage = storage.leaderboardPage || 0;
	var totalPages = Math.max(1, Math.ceil(sortedNames.length / 10));
	var startIndex = currentPage * 10;
	var endIndex = Math.min(startIndex + 10, sortedNames.length);
	// Update page indicator
	if (sortedNames.length === 0) {
		pageIndicator.setText('HENÜZ OYUNCU YOK');
	} else {
		pageIndicator.setText('SAYFA ' + (currentPage + 1) + '/' + totalPages);
	}
	// Update pagination button states
	prevPageButton.alpha = currentPage > 0 ? 0.9 : 0.3;
	prevPageText.alpha = currentPage > 0 ? 1.0 : 0.3;
	nextPageButton.alpha = currentPage < totalPages - 1 ? 0.9 : 0.3;
	nextPageText.alpha = currentPage < totalPages - 1 ? 1.0 : 0.3;
	for (var i = 0; i < globalScoresList.length; i++) {
		var dataIndex = startIndex + i;
		if (dataIndex < sortedNames.length && dataIndex < endIndex) {
			var displayText = dataIndex + 1 + '. ' + sortedNames[dataIndex] + ': ' + sortedScores[dataIndex];
			globalScoresList[i].setText(displayText);
			globalScoresList[i].visible = true;
			// Reset tint for regular players
			globalScoresList[i].tint = 0xFFFFFF;
		} else if (i === 0 && sortedNames.length === 0) {
			// Show message when no players exist yet after clearing data
			globalScoresList[i].setText('OYUNCU VERİLERİ TEMİZLENDİ - YENİ OYUNCULAR BEKLENİYOR');
			globalScoresList[i].visible = true;
			globalScoresList[i].tint = 0xFFD700;
		} else {
			globalScoresList[i].visible = false;
		}
	}
	// Find current player's rank if not in top 100
	var playerRank = -1;
	var playerScore = highScore;
	for (var i = 0; i < sortedNames.length; i++) {
		if (sortedNames[i] === currentUsername) {
			playerRank = i + 1;
			playerScore = sortedScores[i];
			break;
		}
	}
	// Show player's rank separately if not in current page view
	if (playerRank > 100 || playerRank > endIndex || playerRank <= startIndex) {
		if (globalScoresList.length > 0) {
			var lastVisibleIndex = -1;
			for (var i = globalScoresList.length - 1; i >= 0; i--) {
				if (globalScoresList[i].visible) {
					lastVisibleIndex = i;
					break;
				}
			}
			if (lastVisibleIndex >= 0 && lastVisibleIndex < globalScoresList.length - 1) {
				var playerText = '--- SİZ: ' + playerRank + '. ' + currentUsername + ': ' + playerScore + ' ---';
				globalScoresList[lastVisibleIndex + 1].setText(playerText);
				globalScoresList[lastVisibleIndex + 1].visible = true;
				globalScoresList[lastVisibleIndex + 1].tint = 0xFFD700;
			}
		}
	}
}
// Function to hide leaderboard and return to main menu
function hideLeaderboard() {
	showLeaderboard = false;
	showMainMenu = true;
	// Hide leaderboard elements
	leaderboardBg.visible = false;
	leaderboardTitle.visible = false;
	highScoreText.visible = false;
	currentScoreText.visible = false;
	backButton.visible = false;
	backButtonText.visible = false;
	globalLeaderboardText.visible = false;
	prevPageButton.visible = false;
	prevPageText.visible = false;
	nextPageButton.visible = false;
	nextPageText.visible = false;
	pageIndicator.visible = false;
	// Hide global scores list
	for (var i = 0; i < globalScoresList.length; i++) {
		globalScoresList[i].visible = false;
	}
	// Show main menu elements
	usernamePanel.visible = true;
	usernameText.visible = true;
	mainMenuTitle.visible = true;
	playButton.visible = true;
	playButtonText.visible = true;
	scoreButton.visible = true;
	scoreButtonText.visible = true;
}
// Initialize storage arrays if they don't exist
if (!storage.globalLeaderboardNames) storage.globalLeaderboardNames = [];
if (!storage.globalLeaderboardScores) storage.globalLeaderboardScores = [];
if (!storage.highScore) storage.highScore = 0;
if (!storage.lastScore) storage.lastScore = 0;
if (!storage.leaderboardPage) storage.leaderboardPage = 0;
// Initialize username if not exists
if (!storage.username) {
	var playerNumber = 1;
	while (storage.globalLeaderboardNames.indexOf('Oyuncu ' + playerNumber) !== -1) {
		playerNumber++;
	}
	storage.username = 'Oyuncu ' + playerNumber;
}
// Display username in main menu
usernameText.setText(storage.username);
// Global leaderboard is now initialized in showLeaderboardScreen function
// Initialize game
createPipe();
createPipe();
// Touch/click handler
game.down = function (x, y, obj) {
	if (gameOver) {
		resetGame();
		return;
	}
	if (showMainMenu) {
		// Check play button (OYNA) - centered at 1024x1366, button is 300x80
		if (x >= 874 && x <= 1174 && y >= 1326 && y <= 1406) {
			// Add visual feedback with tween
			tween(playButton, {
				scaleX: 1.1,
				scaleY: 1.1
			}, {
				duration: 100,
				onFinish: function onFinish() {
					tween(playButton, {
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 100
					});
				}
			});
			// Add small delay to prevent double clicks
			LK.setTimeout(function () {
				startGameFromMenu();
			}, 150);
			return;
		}
		// Check score button (SKOR) - centered at 1024x1366, button is 300x80
		if (x >= 874 && x <= 1174 && y >= 1476 && y <= 1556) {
			// Add visual feedback with tween
			tween(scoreButton, {
				scaleX: 1.1,
				scaleY: 1.1
			}, {
				duration: 100,
				onFinish: function onFinish() {
					tween(scoreButton, {
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 100
					});
				}
			});
			// Add small delay to prevent double clicks
			LK.setTimeout(function () {
				showLeaderboardScreen();
			}, 150);
			return;
		}
		return;
	}
	if (showLeaderboard) {
		// Check back button (GERİ) - centered at 1024x1716, button is 300x80
		if (x >= 874 && x <= 1174 && y >= 1676 && y <= 1756) {
			// Add visual feedback with tween
			tween(backButton, {
				scaleX: 1.1,
				scaleY: 1.1
			}, {
				duration: 100,
				onFinish: function onFinish() {
					tween(backButton, {
						scaleX: 1.0,
						scaleY: 1.0
					}, {
						duration: 100
					});
				}
			});
			// Add small delay to prevent double clicks
			LK.setTimeout(function () {
				hideLeaderboard();
			}, 150);
			return;
		}
		// Check previous page button - centered at 724x1646, button is 200x60
		if (x >= 624 && x <= 824 && y >= 1616 && y <= 1676) {
			var currentPage = storage.leaderboardPage || 0;
			if (currentPage > 0) {
				storage.leaderboardPage = currentPage - 1;
				showLeaderboardScreen();
			}
			return;
		}
		// Check next page button - centered at 1324x1646, button is 200x60
		if (x >= 1224 && x <= 1424 && y >= 1616 && y <= 1676) {
			var currentPage = storage.leaderboardPage || 0;
			var totalPages = Math.ceil((storage.globalLeaderboardNames || []).length / 10);
			if (currentPage < totalPages - 1) {
				storage.leaderboardPage = currentPage + 1;
				showLeaderboardScreen();
			}
			return;
		}
		return;
	}
	if (!gameStarted) {
		gameStarted = true;
		instructionTxt.visible = false;
		instructionBg.visible = false;
		// Remove invisible barriers when game starts
		if (topBarrier) {
			topBarrier.destroy();
			topBarrier = null;
		}
		if (bottomBarrier) {
			bottomBarrier.destroy();
			bottomBarrier = null;
		}
	}
	bird.flap();
};
// Main game loop
game.update = function () {
	if (gameOver || showMainMenu || showLeaderboard) return;
	// Only run game logic if game has started
	if (gameStarted) {
		// Check ground and ceiling collision
		if (bird.y + 20 >= 2732 - 150 || bird.y - 20 <= 0) {
			gameOver = true;
			var currentScore = LK.getScore();
			storage.lastScore = currentScore;
			if (currentScore > (storage.highScore || 0)) {
				storage.highScore = currentScore;
			}
			// Add to leaderboard if score > 0
			if (currentScore > 0) {
				var currentUsername = storage.username;
				var playerExists = false;
				for (var i = 0; i < storage.globalLeaderboardNames.length; i++) {
					if (storage.globalLeaderboardNames[i] === currentUsername) {
						if (currentScore > storage.globalLeaderboardScores[i]) {
							storage.globalLeaderboardScores[i] = currentScore;
						}
						playerExists = true;
						break;
					}
				}
				if (!playerExists) {
					storage.globalLeaderboardNames.push(currentUsername);
					storage.globalLeaderboardScores.push(currentScore);
				}
			}
			resetGame();
			return;
		}
		// Check pipe collisions and scoring
		for (var i = 0; i < pipes.length; i++) {
			var pipe = pipes[i];
			// Only check pipes near the bird
			if (Math.abs(pipe.x - bird.x) < 200) {
				// Check if bird is within pipe horizontally
				if (bird.x + 30 > pipe.x - 50 && bird.x - 30 < pipe.x + 50) {
					// Check collision with top or bottom pipe
					if (bird.y - 20 < pipe.gapCenterY - pipe.gapSize / 2 || bird.y + 20 > pipe.gapCenterY + pipe.gapSize / 2) {
						gameOver = true;
						var currentScore = LK.getScore();
						storage.lastScore = currentScore;
						if (currentScore > (storage.highScore || 0)) {
							storage.highScore = currentScore;
						}
						// Add to leaderboard if score > 0
						if (currentScore > 0) {
							var currentUsername = storage.username;
							var playerExists = false;
							for (var j = 0; j < storage.globalLeaderboardNames.length; j++) {
								if (storage.globalLeaderboardNames[j] === currentUsername) {
									if (currentScore > storage.globalLeaderboardScores[j]) {
										storage.globalLeaderboardScores[j] = currentScore;
									}
									playerExists = true;
									break;
								}
							}
							if (!playerExists) {
								storage.globalLeaderboardNames.push(currentUsername);
								storage.globalLeaderboardScores.push(currentScore);
							}
						}
						resetGame();
						return;
					}
				}
			}
			// Check scoring - only for pipes that haven't been passed yet
			if (!pipe.passed && pipe.x + 50 < bird.x) {
				pipe.passed = true;
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText('SKOR: ' + LK.getScore());
				LK.getSound('score').play();
			}
		}
		// Create new pipes - maintain consistent spacing
		if (pipes.length === 0 || pipes.length > 0 && pipes[pipes.length - 1].x <= 2048 + 200 - pipeSpacing) {
			createPipe();
		}
		// Remove off-screen pipes every 30 frames
		if (LK.ticks % 30 === 0) {
			for (var j = pipes.length - 1; j >= 0; j--) {
				if (pipes[j].x < -150) {
					pipes[j].destroy();
					pipes.splice(j, 1);
				}
			}
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -315,9 +315,24 @@
 pageIndicator.strokeThickness = 2;
 pageIndicator.visible = false;
 LK.gui.center.addChild(pageIndicator);
 pageIndicator.y = 280;
-// Create and add background image first (so it appears behind other elements)
+// Create invisible barrier blocks to constrain bird before game starts
+var topBarrier = game.addChild(LK.getAsset('barrier', {
+	anchorX: 0.5,
+	anchorY: 1
+}));
+topBarrier.x = 400;
+topBarrier.y = 1316; // 50 pixels above bird
+topBarrier.alpha = 0; // Make invisible
+var bottomBarrier = game.addChild(LK.getAsset('barrier', {
+	anchorX: 0.5,
+	anchorY: 0
+}));
+bottomBarrier.x = 400;
+bottomBarrier.y = 1416; // 50 pixels below bird
+bottomBarrier.alpha = 0; // Make invisible
+// Create and add background image (appears behind barriers but in front of other elements)
 var background = game.addChild(LK.getAsset('background', {
 	anchorX: 0,
 	anchorY: 0
 }));
@@ -334,23 +349,8 @@
 // Create bird
 bird = game.addChild(new Bird());
 bird.x = 400;
 bird.y = 1366;
-// Create invisible barrier blocks to constrain bird before game starts
-var topBarrier = game.addChild(LK.getAsset('barrier', {
-	anchorX: 0.5,
-	anchorY: 1
-}));
-topBarrier.x = 400;
-topBarrier.y = 1316; // 50 pixels above bird
-topBarrier.alpha = 0; // Make invisible
-var bottomBarrier = game.addChild(LK.getAsset('barrier', {
-	anchorX: 0.5,
-	anchorY: 0
-}));
-bottomBarrier.x = 400;
-bottomBarrier.y = 1416; // 50 pixels below bird
-bottomBarrier.alpha = 0; // Make invisible
 // Create pipe function
 function createPipe() {
 	// Define safe boundaries for gap center to ensure both pipes have reasonable heights
 	var minGapY = 800; // Minimum gap center position (ensures top pipe has decent height)