/**** 
* Plugins
****/ 
var tween = LK.import("@upit/tween.v1");
var storage = LK.import("@upit/storage.v1", {
	currentLevel: 1,
	unlockedLevels: 1,
	totalScore: 0,
	levelScore: 0,
	checkpointEnabled: true
});

/**** 
* Classes
****/ 
var BackgroundShape = Container.expand(function () {
	var self = Container.call(this);
	var shapeTypes = ['bgCircle', 'bgSquare', 'bgTriangle', 'bgPentagon', 'bgHexagon', 'bgHeptagon', 'bgOctagon'];
	var randomType = shapeTypes[Math.floor(Math.random() * shapeTypes.length)];
	var shapeGraphics = self.attachAsset(randomType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -1 - Math.random() * 2; // Random speed between -1 and -3
	self.rotationSpeed = (Math.random() - 0.5) * 0.02; // Random rotation
	self.pulseScale = 1;
	self.pulseDirection = 1;
	self.alpha = 0.3 + Math.random() * 0.4; // Random transparency between 0.3-0.7
	shapeGraphics.alpha = self.alpha;
	self.update = function () {
		self.x += self.speed;
		// Add rotation
		shapeGraphics.rotation += self.rotationSpeed;
		// Add subtle pulsing
		self.pulseScale += 0.003 * self.pulseDirection;
		if (self.pulseScale > 1.1) self.pulseDirection = -1;
		if (self.pulseScale < 0.9) self.pulseDirection = 1;
		shapeGraphics.scaleX = self.pulseScale;
		shapeGraphics.scaleY = self.pulseScale;
	};
	return self;
});
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Ensure bird is visible
	birdGraphics.alpha = 1.0;
	birdGraphics.visible = true;
	self.velocityY = 0;
	self.gravity = 0.8;
	self.flapPower = -12;
	self.rotation = 0;
	self.rotationVelocity = 0;
	self.isFlipping = false;
	self.completedFlips = 0;
	self.lastUpright = true;
	self.flap = function () {
		self.velocityY = self.flapPower;
		LK.getSound('flap').play();
		// No score bonus for flapping - score only from obstacles
	};
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		// Keep bird in bounds horizontally
		if (self.x < 40) self.x = 40;
		if (self.x > 2008) self.x = 2008;
	};
	self.isUpright = function () {
		var normalizedRotation = self.rotation % (Math.PI * 2);
		return normalizedRotation < 0.3 || normalizedRotation > Math.PI * 2 - 0.3;
	};
	return self;
});
var Bomb = Container.expand(function () {
	var self = Container.call(this);
	var bombGraphics = self.attachAsset('bomb', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -2;
	self.passed = false;
	self.collected = false;
	self.isBomb = true;
	self.pulseScale = 1;
	self.pulseDirection = 1;
	self.rotationSpeed = 0.05;
	self.update = function () {
		self.x += self.speed;
		// Pulsing effect for bombs
		self.pulseScale += 0.015 * self.pulseDirection;
		if (self.pulseScale > 1.3) self.pulseDirection = -1;
		if (self.pulseScale < 0.8) self.pulseDirection = 1;
		bombGraphics.scaleX = self.pulseScale;
		bombGraphics.scaleY = self.pulseScale;
	};
	return self;
});
var Checkpoint = Container.expand(function () {
	var self = Container.call(this);
	var checkpointGraphics = self.attachAsset('heart', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 3,
		scaleY: 3
	});
	self.speed = -3;
	self.activated = false;
	self.checkpointIndex = 0;
	self.obstacleIndex = 0; // Track which obstacle count this checkpoint is for
	self.pulseScale = 1;
	self.pulseDirection = 1;
	// Purple tint for checkpoint
	checkpointGraphics.tint = 0x9966ff;
	self.update = function () {
		self.x += self.speed;
		// Pulsing effect
		self.pulseScale += 0.015 * self.pulseDirection;
		if (self.pulseScale > 1.4) self.pulseDirection = -1;
		if (self.pulseScale < 0.8) self.pulseDirection = 1;
		checkpointGraphics.scaleX = self.pulseScale * 3;
		checkpointGraphics.scaleY = self.pulseScale * 3;
		// Rotation effect
		checkpointGraphics.rotation += 0.02;
	};
	return self;
});
var Heart = Container.expand(function () {
	var self = Container.call(this);
	var heartGraphics = self.attachAsset('heart', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 2,
		scaleY: 2
	});
	self.speed = -3;
	self.collected = false;
	self.pulseScale = 1;
	self.pulseDirection = 1;
	self.floatOffset = 0;
	// Add pulsing and floating animation
	self.update = function () {
		self.x += self.speed;
		// Pulsing effect
		self.pulseScale += 0.01 * self.pulseDirection;
		if (self.pulseScale > 1.2) self.pulseDirection = -1;
		if (self.pulseScale < 0.8) self.pulseDirection = 1;
		heartGraphics.scaleX = self.pulseScale;
		heartGraphics.scaleY = self.pulseScale;
		// Floating effect
		self.floatOffset += 0.05;
		heartGraphics.y = Math.sin(self.floatOffset) * 10;
	};
	return self;
});
var Laser = Container.expand(function () {
	var self = Container.call(this);
	var laserGraphics = self.attachAsset('laser', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -24;
	self.passed = false;
	self.collected = false;
	self.isLaser = true;
	self.pulseScale = 1;
	self.pulseDirection = 1;
	self.horizontalSpeed = 6;
	self.horizontalDirection = 1;
	self.maxHorizontalRange = 300;
	self.startX = 0;
	// Laser visual effects - bright red pulsing
	laserGraphics.tint = 0xff0000;
	self.update = function () {
		self.x -= self.speed; // Changed to move in opposite direction (positive X, away from bird)
		// Horizontal oscillation movement
		self.x += self.horizontalSpeed * self.horizontalDirection;
		// Reverse direction if reached maximum range
		if (Math.abs(self.x - self.startX) > self.maxHorizontalRange) {
			self.horizontalDirection *= -1;
		}
		// Intense pulsing effect for laser
		self.pulseScale += 0.02 * self.pulseDirection;
		if (self.pulseScale > 1.4) self.pulseDirection = -1;
		if (self.pulseScale < 0.7) self.pulseDirection = 1;
		laserGraphics.scaleX = self.pulseScale;
		laserGraphics.scaleY = self.pulseScale;
		// Add rotation for visual effect
		laserGraphics.rotation += 0.03;
	};
	return self;
});
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	// Choose obstacle type from level-specific sequence
	var randomType = 'block'; // Default fallback
	if (levelObstacleTypes.length > 0) {
		var typeIndex = obstacleCounter % levelObstacleTypes.length;
		randomType = levelObstacleTypes[typeIndex];
	}
	var obstacleGraphics = self.attachAsset(randomType, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -3;
	self.passed = false;
	self.obstacleType = randomType;
	// Add visual effects for Geometry Dash style
	self.pulseScale = 1;
	self.pulseDirection = 1;
	self.rotationSpeed = 0;
	self.isStationary = false;
	// Set rotation speed for certain types
	if (randomType === 'spike' || randomType === 'block') {
		self.rotationSpeed = 0.02;
	}
	// Set rest platform specific properties
	if (randomType === 'restPlatform') {
		self.speed = 0; // Rest platforms don't move horizontally
		self.isStationary = true;
		self.isSafe = true; // Mark as safe platform
	}
	// Set door specific properties
	if (randomType === 'door') {
		self.speed = -1; // Doors move slower
		self.isDoor = true; // Mark as door for special collision handling
		self.pulseScale = 1.1; // Start with larger pulse for visibility
	}
	self.update = function () {
		// Only move if not stationary
		if (!self.isStationary) {
			self.x += self.speed;
		}
		// Add pulsing effect only for non-rest platform obstacles
		if (self.obstacleType !== 'restPlatform') {
			self.pulseScale += 0.005 * self.pulseDirection;
			if (self.pulseScale > 1.05) self.pulseDirection = -1;
			if (self.pulseScale < 0.98) self.pulseDirection = 1;
			obstacleGraphics.scaleX = self.pulseScale;
			obstacleGraphics.scaleY = self.pulseScale;
		}
		// Add rotation for certain obstacles
		if (self.rotationSpeed > 0) {
			obstacleGraphics.rotation += self.rotationSpeed;
		}
	};
	return self;
});
var Portal = Container.expand(function () {
	var self = Container.call(this);
	var portalGraphics = self.attachAsset('door', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5
	});
	self.speed = -2;
	self.passed = false;
	self.isPortal = true;
	self.pulseScale = 1;
	self.pulseDirection = 1;
	self.rotationSpeed = 0.01;
	// Portal specific visual effects
	portalGraphics.tint = 0x9966ff; // Purple tint for portal
	self.update = function () {
		self.x += self.speed;
		// Enhanced pulsing effect for portal
		self.pulseScale += 0.008 * self.pulseDirection;
		if (self.pulseScale > 1.3) self.pulseDirection = -1;
		if (self.pulseScale < 0.8) self.pulseDirection = 1;
		portalGraphics.scaleX = self.pulseScale * 1.5;
		portalGraphics.scaleY = self.pulseScale * 1.5;
		// Portal rotation removed - portal no longer spins
	};
	return self;
});
var Spike = Container.expand(function () {
	var self = Container.call(this);
	var spikeGraphics = self.attachAsset('heart', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -2;
	self.passed = false;
	self.collected = false;
	self.isSpike = true;
	self.pulseScale = 1;
	self.pulseDirection = 1;
	self.rotationSpeed = 0;
	// Spike visual effects - look like hearts (no tint)
	self.update = function () {
		self.x += self.speed;
		// Pulsing effect for spikes
		self.pulseScale += 0.01 * self.pulseDirection;
		if (self.pulseScale > 1.15) self.pulseDirection = -1;
		if (self.pulseScale < 0.9) self.pulseDirection = 1;
		spikeGraphics.scaleX = self.pulseScale;
		spikeGraphics.scaleY = self.pulseScale;
		// No rotation for spikes
	};
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
var bird;
var obstacles = [];
var hearts = [];
var backgroundShapes = [];
var portals = [];
var spikes = [];
var bombs = [];
var lasers = [];
var ground;
var gameStarted = false;
var lastObstacle = 0;
var obstacleSpacing = 400;
var currentLevel = 1;
var unlockedLevels = 1;
var totalScore = 0;
var levelScoreThreshold = 10; // Base score needed to unlock next level
// Load persistent scores from storage
totalScore = storage.totalScore || 0;
var levelScore = storage.levelScore || 0;
LK.setScore(levelScore);
// Checkpoint system variables
var checkpoints = []; // Array to store checkpoint positions
var lastCheckpointIndex = -1; // Track the last checkpoint reached
var checkpointSpacing = 1000; // Distance between checkpoints
var nextCheckpointX = 2500; // Position of next checkpoint
var obstacleCounter = 0; // Counter for obstacle generation
var levelObstacleTypes = []; // Array to store shuffled obstacle types for current level
var playerHealth = 3; // Player starts with 3 lives
var lastBackgroundShape = 0;
var backgroundShapeSpacing = 400; // Spacing between background shapes - increased for more space between shapes
var missedHearts = 0; // Track how many hearts were missed
var portalSpawned = false; // Track if portal has been spawned for current level
var currentObstacleArrayPassed = false; // Track if current obstacle array has been passed
var lastObstacleArrayX = 0; // Track the X position of the last obstacle array
// Death music is already implemented in the following scenarios:
// 1. Ground collision - line 43: LK.getSound('death').play();
// 2. Spike collision - line 5F: LK.getSound('death').play();
// 3. Bomb collision when health is 1 - line 5S: LK.getSound('death').play();
// 4. When health reaches 0 in takeDamage - line 36: LK.getSound('death').play();
// Checkpoint toggle functionality
var checkpointEnabled = storage.checkpointEnabled !== false; // Default to true
var checkpointToggleButton;
LK.setScore(0);
// Create score display
var scoreTxt = new Text2('0', {
	size: 80,
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
scoreTxt.y = 100;
// Reset storage values to initial state
storage.currentLevel = 1;
storage.unlockedLevels = 1;
storage.totalScore = 0;
// Create level display
var levelTxt = new Text2('Seviye ' + currentLevel, {
	size: 70,
	fill: 0xFFD700
});
levelTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(levelTxt);
levelTxt.y = 180;
// Create level progress display
var progressTxt = new Text2('İlerleme: 0/' + levelScoreThreshold, {
	size: 40,
	fill: 0xFFFFFF
});
progressTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(progressTxt);
progressTxt.y = 280;
// Create health display
var healthTxt = new Text2('Can: ' + playerHealth, {
	size: 50,
	fill: 0xff0000
});
healthTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(healthTxt);
healthTxt.y = 340;
// Create checkpoint toggle button
checkpointToggleButton = new Text2(checkpointEnabled ? 'Checkpoint: AÇIK' : 'Checkpoint: KAPALI', {
	size: 45,
	fill: checkpointEnabled ? 0x00ff00 : 0xff0000
});
checkpointToggleButton.anchor.set(0.5, 0);
LK.gui.top.addChild(checkpointToggleButton);
checkpointToggleButton.y = 400;
// Create instructions
var instructionTxt = new Text2('DOKUN VE UÇ\nENGELLERDEN ZİPLA!', {
	size: 60,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
game.addChild(instructionTxt);
instructionTxt.x = 1024;
instructionTxt.y = 1000;
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 0
}));
ground.x = 0;
ground.y = 2632;
// Create bird
bird = game.addChild(new Bird());
bird.x = 300;
bird.y = 800;
// Generate initial obstacle sequence for current level
generateLevelObstacleSequence();
// Create initial obstacles at game start
createObstacle();
// Create initial background shapes
for (var i = 0; i < 15; i++) {
	createBackgroundShape();
}
function generateLevelObstacleSequence() {
	levelObstacleTypes = [];
	var baseTypes = ['spike', 'block', 'tallBlock', 'platform', 'restPlatform', 'restPlatform', 'restPlatform', 'laser']; // Door obstacle removed completely
	var sequenceLength = 50; // Generate enough types for a full level
	var seed = currentLevel * 12345 + Date.now(); // Level-based seed plus current time for different patterns each time
	for (var i = 0; i < sequenceLength; i++) {
		seed = (seed * 9301 + 49297) % 233280;
		var randomIndex = Math.floor(seed / 233280 * baseTypes.length);
		levelObstacleTypes.push(baseTypes[randomIndex]);
	}
}
function updateLevelProgress() {
	var levelProgress = LK.getScore();
	var progressNeeded = levelScoreThreshold + (currentLevel - 1) * 10;
	// Update progress display
	progressTxt.setText('İlerleme: ' + levelProgress + '/' + progressNeeded);
}
function updateDifficultyForLevel() {
	// Each level increases difficulty significantly
	var difficultyMultiplier = 1 + (currentLevel - 1) * 0.4;
	// Adjust obstacle spacing based on level - gets much tighter
	obstacleSpacing = Math.max(150, 400 - (currentLevel - 1) * 30);
	// Adjust bird physics progressively for higher levels
	if (currentLevel > 2) {
		bird.gravity = 0.8 + (currentLevel - 2) * 0.15; // Stronger gravity earlier
	}
	// Increase bird flap power requirement for higher levels
	if (currentLevel > 3) {
		bird.flapPower = Math.max(-18, -12 - (currentLevel - 3) * 1.5); // Stronger flap needed
	}
	// Adjust obstacle speed for higher levels
	var obstacleSpeedMultiplier = 1 + (currentLevel - 1) * 0.2;
	// Apply speed multiplier to all moving obstacles
	for (var i = 0; i < obstacles.length; i++) {
		if (obstacles[i] && !obstacles[i].isStationary) {
			obstacles[i].speed = -3 * obstacleSpeedMultiplier;
		}
	}
	for (var h = 0; h < hearts.length; h++) {
		if (hearts[h]) {
			hearts[h].speed = -3 * obstacleSpeedMultiplier;
		}
	}
	for (var s = 0; s < spikes.length; s++) {
		if (spikes[s]) {
			spikes[s].speed = -2 * obstacleSpeedMultiplier;
		}
	}
	for (var b = 0; b < bombs.length; b++) {
		if (bombs[b]) {
			bombs[b].speed = -2 * obstacleSpeedMultiplier;
		}
	}
	for (var l = 0; l < lasers.length; l++) {
		if (lasers[l]) {
			lasers[l].speed = -24 * obstacleSpeedMultiplier;
		}
	}
}
function restoreFromCheckpoint() {
	// Check if checkpoints are enabled
	if (!checkpointEnabled) {
		return false; // Checkpoints disabled
	}
	// Load checkpoint data from storage
	var checkpointIndex = storage.lastCheckpointIndex || -1;
	if (checkpointIndex >= 0) {
		// Restore from checkpoint
		currentLevel = storage.checkpointLevel || 1;
		LK.setScore(storage.checkpointScore || 0);
		playerHealth = storage.checkpointHealth || 3;
		obstacleCounter = storage.checkpointObstacleCounter || 0;
		missedHearts = storage.checkpointMissedHearts || 0;
		portalSpawned = storage.checkpointPortalSpawned || false;
		// Update displays
		levelTxt.setText('Seviye ' + currentLevel);
		scoreTxt.setText(LK.getScore());
		healthTxt.setText('Can: ' + playerHealth);
		// Restore bird position
		bird.x = storage.checkpointBirdX || 300;
		bird.y = storage.checkpointBirdY || 800;
		bird.velocityY = 0;
		// Clear all game objects
		clearAllGameObjects();
		// Regenerate level
		generateLevelObstacleSequence();
		updateDifficultyForLevel();
		updateLevelProgress();
		// Start the game if it's not started
		if (!gameStarted) {
			gameStarted = true;
			if (instructionTxt && instructionTxt.parent) {
				game.removeChild(instructionTxt);
			}
		}
		// Restart music
		LK.playMusic('hfu2');
		// Position bird at checkpoint position
		bird.x = storage.checkpointBirdX || 300;
		bird.y = storage.checkpointBirdY || 800;
		// Create initial obstacles for the checkpoint level
		createObstacle();
		return true; // Checkpoint restored
	}
	return false; // No checkpoint available
}
function clearAllGameObjects() {
	// Clear all obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].destroy();
		obstacles.splice(i, 1);
	}
	// Clear all checkpoints
	for (var c = checkpoints.length - 1; c >= 0; c--) {
		checkpoints[c].destroy();
		checkpoints.splice(c, 1);
	}
	// Clear all hearts
	for (var h = hearts.length - 1; h >= 0; h--) {
		hearts[h].destroy();
		hearts.splice(h, 1);
	}
	// Clear all portals
	for (var p = portals.length - 1; p >= 0; p--) {
		portals[p].destroy();
		portals.splice(p, 1);
	}
	// Clear all spikes
	for (var s = spikes.length - 1; s >= 0; s--) {
		spikes[s].destroy();
		spikes.splice(s, 1);
	}
	// Clear all bombs
	for (var b = bombs.length - 1; b >= 0; b--) {
		bombs[b].destroy();
		bombs.splice(b, 1);
	}
	// Clear all lasers
	for (var l = lasers.length - 1; l >= 0; l--) {
		lasers[l].destroy();
		lasers.splice(l, 1);
	}
	// Clear all background shapes
	for (var bg = backgroundShapes.length - 1; bg >= 0; bg--) {
		backgroundShapes[bg].destroy();
		backgroundShapes.splice(bg, 1);
	}
	// Reset counters
	obstacleCounter = 0;
	missedHearts = 0;
	portalSpawned = false;
	currentObstacleArrayPassed = false;
	lastObstacleArrayX = 0;
	nextCheckpointX = 2500;
}
function resetToLevelStart() {
	// Reset to level 1 when game over occurs
	currentLevel = 1;
	storage.currentLevel = 1;
	levelTxt.setText('Seviye ' + currentLevel);
	// Reset score to level start
	LK.setScore(0);
	scoreTxt.setText(0);
	// Reset health
	playerHealth = 3;
	healthTxt.setText('Can: ' + playerHealth);
	// Clear checkpoint data when resetting to level start
	storage.lastCheckpointIndex = -1;
	storage.checkpointScore = 0;
	storage.checkpointLevel = 1;
	storage.checkpointHealth = 3;
	storage.checkpointBirdX = 300;
	storage.checkpointBirdY = 800;
	storage.checkpointObstacleCounter = 0;
	storage.checkpointMissedHearts = 0;
	storage.checkpointPortalSpawned = false;
	// Restart music when game resets
	LK.playMusic('hfu2');
	// Clear all obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].destroy();
		obstacles.splice(i, 1);
	}
	// Clear all background shapes
	for (var j = backgroundShapes.length - 1; j >= 0; j--) {
		backgroundShapes[j].destroy();
		backgroundShapes.splice(j, 1);
	}
	// Clear all hearts
	for (var k = hearts.length - 1; k >= 0; k--) {
		hearts[k].destroy();
		hearts.splice(k, 1);
	}
	// Clear all portals
	for (var p = portals.length - 1; p >= 0; p--) {
		portals[p].destroy();
		portals.splice(p, 1);
	}
	// Clear all spikes
	for (var s = spikes.length - 1; s >= 0; s--) {
		spikes[s].destroy();
		spikes.splice(s, 1);
	}
	// Clear all bombs
	for (var b = bombs.length - 1; b >= 0; b--) {
		bombs[b].destroy();
		bombs.splice(b, 1);
	}
	// Clear all lasers
	for (var l = lasers.length - 1; l >= 0; l--) {
		lasers[l].destroy();
		lasers.splice(l, 1);
	}
	// Reset obstacle counter
	obstacleCounter = 0;
	// Reset missed hearts counter
	missedHearts = 0;
	// Reset portal spawned flag
	portalSpawned = false;
	// Reset obstacle array tracking
	currentObstacleArrayPassed = false;
	lastObstacleArrayX = 0;
	// Reset bird position
	bird.x = 300;
	bird.y = 800;
	bird.velocityY = 0;
	bird.completedFlips = 0;
	// Regenerate obstacle sequence for current level
	generateLevelObstacleSequence();
	// Update displays
	updateLevelProgress();
	// Update difficulty for level 1
	updateDifficultyForLevel();
	// Create initial obstacle
	createObstacle();
}
function takeDamage() {
	playerHealth--;
	healthTxt.setText('Can: ' + playerHealth);
	// Flash screen red when taking damage
	tween(game, {
		tint: 0xff4444
	}, {
		duration: 200,
		onFinish: function onFinish() {
			tween(game, {
				tint: 0xffffff
			}, {
				duration: 200
			});
		}
	});
	// Check if game over
	if (playerHealth <= 0) {
		// Play death music
		LK.getSound('death').play();
		// Play death sound
		LK.getSound('deathSound').play();
		// Try to restore from checkpoint first only if enabled
		if (checkpointEnabled && !restoreFromCheckpoint()) {
			// No checkpoint available, show game over screen
			showGameOverWithLevelButton();
		} else if (!checkpointEnabled) {
			// Checkpoints disabled, go straight to game over
			showGameOverWithLevelButton();
		}
	}
}
function resetHealth() {
	playerHealth = 3;
	healthTxt.setText('Can: ' + playerHealth);
}
function startGame() {
	if (!gameStarted) {
		gameStarted = true;
		game.removeChild(instructionTxt);
		// Start playing music when game begins - restart music for new game
		LK.playMusic('hfu2');
		// Reset obstacle counter for consistent level maps
		obstacleCounter = 0;
		// Generate obstacle sequence for current level
		generateLevelObstacleSequence();
		resetHealth(); // Reset health when starting game
		updateDifficultyForLevel();
		updateLevelProgress();
	}
}
function createBackgroundShape() {
	var bgShape = new BackgroundShape();
	bgShape.x = 2200 + Math.random() * 200; // Start off-screen right
	bgShape.y = 200 + Math.random() * 2300; // Random Y position
	// Scale background shapes to 3 times their original size
	bgShape.scaleX = 3;
	bgShape.scaleY = 3;
	// Check distance from existing background shapes to ensure spacing
	var minDistance = 400; // Minimum distance between shapes
	var validPosition = true;
	for (var i = 0; i < backgroundShapes.length; i++) {
		var existingShape = backgroundShapes[i];
		var distanceX = bgShape.x - existingShape.x;
		var distanceY = bgShape.y - existingShape.y;
		var distance = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
		if (distance < minDistance) {
			validPosition = false;
			break;
		}
	}
	// Only add the shape if it has enough spacing
	if (validPosition) {
		backgroundShapes.push(bgShape);
		game.addChild(bgShape);
	} else {
		// Destroy the shape if position is invalid
		bgShape.destroy();
	}
}
function createHeart() {
	var heart = new Heart();
	heart.x = 2200; // Start off-screen right
	heart.y = 300 + Math.random() * 2000; // Random Y position within playable area
	hearts.push(heart);
	game.addChild(heart);
}
function createSpike() {
	// Use seed based on current level and time for randomness
	var spikeSeed = (currentLevel * 7777 + LK.ticks + Date.now()) % 99991;
	var spikeRandom = (spikeSeed * 9301 + 49297) % 233280 / 233280;
	// Only create spike if random chance is met (roughly 15% chance)
	if (spikeRandom < 0.15) {
		var spike = new Spike();
		spike.x = 2200 + Math.random() * 100; // Start off-screen right
		spike.y = 300 + spikeRandom * 2000; // Random Y position
		spikes.push(spike);
		game.addChild(spike);
	}
}
function createCheckpoint() {
	var checkpoint = new Checkpoint();
	checkpoint.x = 2200; // Start off-screen right like other objects
	// Position checkpoint near hearts - find the last created heart's Y position
	var heartY = 1366; // Default center position
	if (hearts.length > 0) {
		// Get the Y position of the most recently created heart
		var lastHeart = hearts[hearts.length - 1];
		heartY = lastHeart.y;
	}
	checkpoint.y = heartY + 100; // Position checkpoint slightly below the heart
	checkpoint.checkpointIndex = checkpoints.length;
	checkpoint.obstacleIndex = obstacleCounter; // Track which obstacle count this checkpoint is for
	checkpoints.push(checkpoint);
	game.addChild(checkpoint);
	// Save checkpoint data to storage - only save essential data as literals
	storage.lastCheckpointX = checkpoint.x;
	storage.lastCheckpointY = checkpoint.y;
	storage.lastCheckpointObstacleIndex = checkpoint.obstacleIndex;
}
function createObstacle() {
	// Create walls that cover full screen with a gap for the bird
	var baseX = 2148;
	var gapSize = 600; // Size of the gap for bird to pass through
	// Progressive gap size reduction per level for increased difficulty
	if (currentLevel === 1) {
		gapSize = 650; // Easier start for level 1
	} else if (currentLevel === 2) {
		gapSize = 580; // Slightly smaller for level 2
	} else if (currentLevel === 3) {
		gapSize = 520; // Even smaller for level 3
	} else if (currentLevel >= 4) {
		// Much more challenging gaps for level 4+
		var baseLevelGap = Math.max(350, 500 - (currentLevel - 4) * 25); // Starts at 500, reduces by 25 per level, minimum 350
		var obstacleReduction = Math.max(0, obstacleCounter * 3); // Reduce by 3 per obstacle within level
		gapSize = Math.max(300, baseLevelGap - obstacleReduction); // Minimum gap of 300
	}
	// Use seeded random based on current level, obstacle counter and current time for different maps each time
	var seed = (currentLevel * 1000 + obstacleCounter + Date.now()) % 9973; // Use prime number for better distribution plus time
	var seededRandom = (seed * 9301 + 49297) % 233280 / 233280; // Linear congruential generator
	var gapPosition = seededRandom * (2200 - gapSize) + 300; // Seeded gap position between 300-2200
	var obstacleHeight = 320; // Height of each obstacle segment (reduced from 400)
	// Reduce obstacle height for Level 4 to create more segments and fill gaps
	if (currentLevel >= 4) {
		obstacleHeight = 240; // Smaller segments create more obstacles (reduced from 300)
	}
	var numSegments = Math.ceil(2732 / obstacleHeight); // Number of segments to cover full height
	for (var i = 0; i < numSegments; i++) {
		var segmentY = i * obstacleHeight + obstacleHeight / 2;
		// Skip creating obstacles in the gap area
		if (segmentY + obstacleHeight / 2 > gapPosition && segmentY - obstacleHeight / 2 < gapPosition + gapSize) {
			continue;
		}
		var obstacle = new Obstacle();
		obstacle.x = baseX;
		obstacle.y = segmentY;
		obstacles.push(obstacle);
		game.addChild(obstacle);
	}
	// Add extra obstacles to fill empty spaces - more for higher levels
	var extraObstacles = Math.min(15, 4 + currentLevel + Math.floor(seededRandom * (2 + currentLevel))); // Scales with level: 5-7 for level 1, up to 15 for high levels
	for (var j = 0; j < extraObstacles; j++) {
		var extraSeed = (seed + j * 777) % 9973;
		var extraRandom = (extraSeed * 9301 + 49297) % 233280 / 233280;
		var obstacleX = baseX + 100 + extraRandom * (400 + currentLevel * 50); // Wider spread for higher levels
		var obstacleY = 150 + extraRandom * 2300; // Cover more vertical space
		// Make sure it's not in the main gap area - tighter constraints for higher levels
		var gapBuffer = Math.max(30, 80 - currentLevel * 5); // Smaller buffer for higher levels
		if (obstacleY < gapPosition - gapBuffer || obstacleY > gapPosition + gapSize + gapBuffer) {
			var extraObstacle = new Obstacle();
			extraObstacle.x = obstacleX;
			extraObstacle.y = obstacleY;
			obstacles.push(extraObstacle);
			game.addChild(extraObstacle);
		}
	}
	// Add obstacles in the middle area - much more for higher levels
	var middleObstacles = Math.min(12, 3 + currentLevel * 2 + Math.floor(seededRandom * currentLevel)); // Scales dramatically: 4-6 for level 1, up to 12 for high levels
	for (var m = 0; m < middleObstacles; m++) {
		var middleSeed = (seed + m * 333 + 111) % 9973;
		var middleRandom = (middleSeed * 9301 + 49297) % 233280 / 233280;
		var middleX = baseX - 300 - middleRandom * (600 + currentLevel * 100); // Wider area coverage for higher levels
		var middleY = 250 + middleRandom * 2100; // Random Y position
		// Ensure obstacles are within screen bounds - tighter placement for higher levels
		var minX = Math.max(400, 600 - currentLevel * 20); // Allow closer placement for higher levels
		if (middleX > minX && middleY > 150 && middleY < 2500) {
			var middleObstacle = new Obstacle();
			middleObstacle.x = middleX;
			middleObstacle.y = middleY;
			obstacles.push(middleObstacle);
			game.addChild(middleObstacle);
		}
	}
	// Add additional scattered obstacles for Level 4, but fewer at the beginning
	if (currentLevel >= 4 && obstacleCounter > 3) {
		// Create 2-3 additional obstacles in random positions, but only after first few obstacles
		var additionalObstacles = 2 + Math.floor(seededRandom * 2); // 2-3 obstacles
		for (var j = 0; j < additionalObstacles; j++) {
			var additionalSeed = (seed + j * 1000) % 9973;
			var additionalRandom = (additionalSeed * 9301 + 49297) % 233280 / 233280;
			var obstacleX = baseX + 200 + additionalRandom * 400; // Spread them out
			var obstacleY = 400 + additionalRandom * 1800; // Random Y position
			// Make sure it's not in the main gap area
			if (obstacleY < gapPosition || obstacleY > gapPosition + gapSize) {
				var additionalObstacle = new Obstacle();
				additionalObstacle.x = obstacleX;
				additionalObstacle.y = obstacleY;
				obstacles.push(additionalObstacle);
				game.addChild(additionalObstacle);
			}
		}
		// Add obstacles specifically in character's current area for Level 4, but fewer at the beginning
		var characterAreaObstacles = obstacleCounter > 2 ? 3 + Math.floor(seededRandom * 2) : 1 + Math.floor(seededRandom * 1); // Start with 1-2 obstacles, then 3-4
		for (var k = 0; k < characterAreaObstacles; k++) {
			var charAreaSeed = (seed + k * 2000 + 500) % 9973;
			var charAreaRandom = (charAreaSeed * 9301 + 49297) % 233280 / 233280;
			// Place obstacles in character's vicinity (around x=300, y=800)
			var charObstacleX = baseX + 100 + charAreaRandom * 300; // Close to current obstacles
			var charObstacleY = bird.y - 400 + charAreaRandom * 800; // Around character's Y position
			// Ensure obstacles are within screen bounds and not in gap
			if (charObstacleY > 100 && charObstacleY < 2500 && (charObstacleY < gapPosition || charObstacleY > gapPosition + gapSize)) {
				var charAreaObstacle = new Obstacle();
				charAreaObstacle.x = charObstacleX;
				charAreaObstacle.y = charObstacleY;
				obstacles.push(charAreaObstacle);
				game.addChild(charAreaObstacle);
			}
		}
	}
	obstacleCounter++;
	lastObstacle = LK.ticks;
	// Update the last obstacle array position and reset completion flag
	lastObstacleArrayX = baseX;
	currentObstacleArrayPassed = false;
	// Create rest platform every 2 obstacles
	if (obstacleCounter % 2 === 0) {
		var restPlatform = new Obstacle();
		restPlatform.obstacleType = 'restPlatform';
		restPlatform.speed = 0;
		restPlatform.isStationary = true;
		restPlatform.isSafe = true;
		restPlatform.x = baseX + 300; // Position rest platform after obstacles
		restPlatform.y = gapPosition + gapSize / 2; // Center in gap area
		obstacles.push(restPlatform);
		game.addChild(restPlatform);
	}
	// Create hearts based on missed hearts count (minimum 1, add 1 for each missed)
	var heartsToCreate = 1 + missedHearts;
	for (var heartIndex = 0; heartIndex < heartsToCreate; heartIndex++) {
		var heart = new Heart();
		heart.x = baseX + 30; // Position heart 30 pixels ahead of obstacle
		// Spread multiple hearts vertically in the gap area
		if (heartsToCreate === 1) {
			heart.y = gapPosition + gapSize / 2; // Center single heart in the gap area
		} else {
			// Distribute multiple hearts evenly across the gap
			var heartSpacing = gapSize / (heartsToCreate + 1);
			heart.y = gapPosition + heartSpacing * (heartIndex + 1);
		}
		hearts.push(heart);
		game.addChild(heart);
	}
	// Create spikes based on level - more spikes for higher levels with strategic positioning
	var spikesToCreate = Math.min(5, Math.floor(currentLevel / 2) + 1); // 1 spike for levels 1-2, up to 5 for high levels
	for (var spikeIndex = 0; spikeIndex < spikesToCreate; spikeIndex++) {
		var spike = new Spike();
		spike.x = baseX + 40 + spikeIndex * 25; // Position spikes closer together
		// Strategic spike positioning for higher levels
		if (spikesToCreate === 1) {
			spike.y = gapPosition + gapSize / 2 + 120; // Single spike offset from heart position
		} else if (currentLevel >= 3) {
			// For level 3+: place spikes to create challenging patterns
			if (spikeIndex === 0) {
				spike.y = gapPosition - 50; // Above gap
			} else if (spikeIndex === 1) {
				spike.y = gapPosition + gapSize + 50; // Below gap
			} else {
				// Additional spikes within gap area for extreme difficulty
				var innerSpacing = gapSize / (spikesToCreate - 1);
				spike.y = gapPosition + innerSpacing * (spikeIndex - 2);
			}
		} else {
			// For levels 1-2: distribute spikes more safely
			var spikeSpacing = (gapSize + 200) / spikesToCreate;
			spike.y = gapPosition - 50 + spikeSpacing * spikeIndex;
		}
		spikes.push(spike);
		game.addChild(spike);
	}
	// Create bombs based on level - much more frequent and challenging for higher levels
	var bombFrequency = Math.max(1, 4 - currentLevel); // Level 1: every 3 obstacles, Level 2: every 2, Level 3+: every obstacle
	if (obstacleCounter % bombFrequency === 0) {
		// Create multiple bombs for higher levels
		var bombCount = Math.min(4, Math.floor(currentLevel / 2) + 1); // 1 bomb for levels 1-2, 2 for 3-4, 3 for 5-6, 4 for 7+
		for (var bombIndex = 0; bombIndex < bombCount; bombIndex++) {
			var bomb = new Bomb();
			bomb.x = baseX + 50 + bombIndex * 40; // Spread bombs horizontally
			// Position bombs at different heights for higher levels
			if (bombCount === 1) {
				bomb.y = gapPosition + gapSize / 2 - 100; // Single bomb position
			} else {
				// Distribute multiple bombs vertically in and around the gap
				var bombSpacing = (gapSize + 200) / bombCount;
				bomb.y = gapPosition - 100 + bombSpacing * bombIndex;
			}
			bombs.push(bomb);
			game.addChild(bomb);
		}
	}
	// Create exactly 3 lasers with each obstacle
	if (currentLevel >= 1) {
		var laserCount = 3; // Always create exactly 3 lasers
		for (var laserIndex = 0; laserIndex < laserCount; laserIndex++) {
			var laser = new Laser();
			laser.x = baseX + 100 + laserIndex * 80; // Spread lasers horizontally
			laser.startX = laser.x; // Set starting position for oscillation
			// Distribute 3 lasers vertically around the gap
			var laserSpacing = (gapSize + 300) / laserCount;
			laser.y = gapPosition - 150 + laserSpacing * laserIndex;
			lasers.push(laser);
			game.addChild(laser);
		}
	}
	// Create rest platforms above and below the gap (door area)
	var topRestPlatform = new Obstacle();
	topRestPlatform.obstacleType = 'restPlatform';
	topRestPlatform.speed = 0;
	topRestPlatform.isStationary = true;
	topRestPlatform.isSafe = true;
	topRestPlatform.x = baseX;
	topRestPlatform.y = gapPosition - 100; // Position above the gap
	obstacles.push(topRestPlatform);
	game.addChild(topRestPlatform);
	var bottomRestPlatform = new Obstacle();
	bottomRestPlatform.obstacleType = 'restPlatform';
	bottomRestPlatform.speed = 0;
	bottomRestPlatform.isStationary = true;
	bottomRestPlatform.isSafe = true;
	bottomRestPlatform.x = baseX;
	bottomRestPlatform.y = gapPosition + gapSize + 100; // Position below the gap
	obstacles.push(bottomRestPlatform);
	game.addChild(bottomRestPlatform);
}
function checkCollisions() {
	// Check ground collision - game over when bird touches ground
	if (bird.y + 60 >= ground.y) {
		// Play death music
		LK.getSound('death').play();
		// Play death sound
		LK.getSound('deathSound').play();
		// Show game over screen with level button
		showGameOverWithLevelButton();
		return;
	}
	// Check obstacle collisions - bounce off obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		var obstacle = obstacles[i];
		// Skip if obstacle is undefined
		if (!obstacle) {
			obstacles.splice(i, 1);
			continue;
		}
		if (bird.intersects(obstacle)) {
			// Check if it's a rest platform - safe area
			if (obstacle.obstacleType === 'restPlatform') {
				// Safe collision - just bounce without damage
				var distanceX = bird.x - obstacle.x;
				var distanceY = bird.y - obstacle.y;
				var totalDistance = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
				if (totalDistance > 0) {
					var normalX = distanceX / totalDistance;
					var normalY = distanceY / totalDistance;
					// Gentle push away from platform
					var pushForce = 3;
					bird.x += normalX * pushForce;
					bird.y += normalY * pushForce;
					// Apply gentle bounce velocity
					bird.velocityY = normalY * 3;
					// Visual feedback for landing on safe platform
					LK.effects.flashObject(obstacle, 0x00ff88, 300);
				}
				continue; // Skip damage dealing
			}
			// Only take damage if not already damaged from this obstacle
			if (!obstacle.damagedBird) {
				takeDamage();
				obstacle.damagedBird = true; // Mark this obstacle as having caused damage
			}
			// Calculate collision direction
			var distanceX = bird.x - obstacle.x;
			var distanceY = bird.y - obstacle.y;
			var totalDistance = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
			// Normalize collision direction
			if (totalDistance > 0) {
				var normalX = distanceX / totalDistance;
				var normalY = distanceY / totalDistance;
				// Push bird away from obstacle
				var pushForce = 8;
				bird.x += normalX * pushForce;
				bird.y += normalY * pushForce;
				// Apply bounce velocity
				var bounceForce = 5;
				bird.velocityY = normalY * bounceForce;
				// Play flap sound for bounce feedback
				LK.getSound('flap').play();
			}
		}
		// Check if bird passed obstacle (mark individual obstacles as passed but don't award points yet)
		if (!obstacle.passed && obstacle.x + 100 < bird.x) {
			obstacle.passed = true;
		}
		;
		// Remove off-screen obstacles (but keep stationary gears and rest platforms)
		if (obstacle.x < -100 && !obstacle.isStationary) {
			// Add flash effect when obstacle disappears
			LK.effects.flashObject(obstacle, 0xffffff, 200);
			obstacle.destroy();
			obstacles.splice(i, 1);
		}
	}
	// Check heart collections
	for (var h = hearts.length - 1; h >= 0; h--) {
		var heart = hearts[h];
		// Skip if heart is undefined
		if (!heart) {
			hearts.splice(h, 1);
			continue;
		}
		// Check if bird collected the heart
		if (bird.intersects(heart) && !heart.collected) {
			heart.collected = true;
			// Reset missed hearts counter when collecting a heart
			missedHearts = 0;
			// Always increase health (no maximum limit)
			playerHealth++;
			healthTxt.setText('Can: ' + playerHealth);
			// Increase score by 2 when collecting heart
			LK.setScore(LK.getScore() + 2);
			storage.levelScore = LK.getScore(); // Save to storage
			scoreTxt.setText(LK.getScore());
			updateLevelProgress();
			// Visual feedback for collecting heart
			tween(heart, {
				scaleX: 2,
				scaleY: 2,
				alpha: 0
			}, {
				duration: 300,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					heart.destroy();
				}
			});
			// Flash screen green briefly
			LK.effects.flashScreen(0x00ff00, 200);
			// Play score sound as feedback
			LK.getSound('score').play();
			hearts.splice(h, 1);
			continue;
		}
		// Remove off-screen hearts
		if (heart.x < -100) {
			// Track that this heart was missed
			missedHearts++;
			heart.destroy();
			hearts.splice(h, 1);
		}
	}
	// Check spike collisions - instant death
	for (var s = spikes.length - 1; s >= 0; s--) {
		var spike = spikes[s];
		// Skip if spike is undefined
		if (!spike) {
			spikes.splice(s, 1);
			continue;
		}
		// Check if bird touched the spike - instant death
		if (bird.intersects(spike)) {
			// Play death music
			LK.getSound('death').play();
			// Play death sound
			LK.getSound('deathSound').play();
			// Flash screen red to indicate death
			LK.effects.flashScreen(0xff0000, 500);
			// Show game over screen immediately
			showGameOverWithLevelButton();
			return; // Exit collision check immediately
		}
		// Remove off-screen spikes
		if (spike.x < -150) {
			spike.destroy();
			spikes.splice(s, 1);
		}
	}
	// Check bomb collisions - reduce health to 1 and remove all hearts
	for (var b = bombs.length - 1; b >= 0; b--) {
		var bomb = bombs[b];
		// Skip if bomb is undefined
		if (!bomb) {
			bombs.splice(b, 1);
			continue;
		}
		// Check if bird touched the bomb
		if (bird.intersects(bomb) && !bomb.collected) {
			bomb.collected = true;
			// Play bomb explosion sound
			LK.getSound('bombExplosion').play();
			// Create explosion effect - scale up and fade out
			tween(bomb, {
				scaleX: 3,
				scaleY: 3,
				alpha: 0,
				rotation: Math.PI * 2
			}, {
				duration: 500,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					bomb.destroy();
				}
			});
			// Remove all hearts from the game first
			for (var hRemove = hearts.length - 1; hRemove >= 0; hRemove--) {
				hearts[hRemove].destroy();
				hearts.splice(hRemove, 1);
			}
			// Check if player already had 1 health (would die from bomb)
			if (playerHealth <= 1) {
				// Play death music
				LK.getSound('death').play();
				// Play death sound
				LK.getSound('deathSound').play();
				// Show game over screen immediately
				showGameOverWithLevelButton();
				return; // Exit collision check immediately
			}
			// Reduce health to 1
			playerHealth = 1;
			healthTxt.setText('Can: ' + playerHealth);
			// Flash screen red to indicate bomb effect
			LK.effects.flashScreen(0xff4444, 800);
			// Remove the bomb from array but don't destroy immediately (explosion handles destruction)
			bombs.splice(b, 1);
			continue;
		}
		// Remove off-screen bombs
		if (bomb.x < -150) {
			bomb.destroy();
			bombs.splice(b, 1);
		}
	}
	// Check laser collisions - damage player and apply knockback
	for (var l = lasers.length - 1; l >= 0; l--) {
		var laser = lasers[l];
		// Skip if laser is undefined
		if (!laser) {
			lasers.splice(l, 1);
			continue;
		}
		// Check if bird touched the laser
		if (bird.intersects(laser) && !laser.collected) {
			laser.collected = true;
			// Play laser sound
			LK.getSound('laserSound').play();
			// Take damage
			takeDamage();
			// Apply knockback effect
			var knockbackForce = 15;
			var distanceX = bird.x - laser.x;
			var distanceY = bird.y - laser.y;
			var totalDistance = Math.sqrt(distanceX * distanceX + distanceY * distanceY);
			if (totalDistance > 0) {
				var normalX = distanceX / totalDistance;
				var normalY = distanceY / totalDistance;
				// Push bird away from laser
				bird.x += normalX * knockbackForce;
				bird.y += normalY * knockbackForce;
				// Apply strong bounce velocity
				bird.velocityY = normalY * 8;
			}
			// Flash screen red to indicate laser hit
			LK.effects.flashScreen(0xff0000, 400);
			// Create destruction effect for laser
			tween(laser, {
				scaleX: 0,
				scaleY: 0,
				alpha: 0,
				rotation: Math.PI * 4
			}, {
				duration: 300,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					laser.destroy();
				}
			});
			lasers.splice(l, 1);
			continue;
		}
		// Remove off-screen lasers (now check right side since they move right)
		if (laser.x > 2300) {
			laser.destroy();
			lasers.splice(l, 1);
		}
	}
	// Check portal collisions
	for (var p = portals.length - 1; p >= 0; p--) {
		var portal = portals[p];
		// Skip if portal is undefined
		if (!portal) {
			portals.splice(p, 1);
			continue;
		}
		if (bird.intersects(portal)) {
			// Flash screen purple to indicate portal entry
			LK.effects.flashScreen(0x9966ff, 800);
			// Add current level score to total and preserve it
			totalScore += LK.getScore();
			storage.totalScore = totalScore;
			storage.levelScore = LK.getScore(); // Save current level score
			// Unlock next level if not already unlocked
			if (currentLevel >= unlockedLevels) {
				unlockedLevels = currentLevel + 1;
				storage.unlockedLevels = unlockedLevels;
			}
			// Advance to next level
			currentLevel++;
			storage.currentLevel = currentLevel;
			levelTxt.setText('Seviye ' + currentLevel);
			// Keep current score when advancing levels (don't reset to 0)
			// Score persists to next level
			scoreTxt.setText(LK.getScore());
			// Reset obstacle counter for consistent level maps
			obstacleCounter = 0;
			// Clear all obstacles
			for (var j = obstacles.length - 1; j >= 0; j--) {
				obstacles[j].destroy();
				obstacles.splice(j, 1);
			}
			// Clear all portals
			for (var pt = portals.length - 1; pt >= 0; pt--) {
				portals[pt].destroy();
				portals.splice(pt, 1);
			}
			// Generate new obstacle sequence for the new level
			generateLevelObstacleSequence();
			updateLevelProgress();
			// Increase difficulty for new level
			updateDifficultyForLevel();
			// Reset bird position
			bird.x = 300;
			bird.y = 800;
			bird.velocityY = 0;
			bird.completedFlips = 0;
			// Reset health
			resetHealth();
			// Reset portal spawned flag
			portalSpawned = false;
			// Create initial obstacle for new level
			createObstacle();
			return; // Exit collision check to avoid other collision handling
		}
		// Remove off-screen portals
		if (portal.x < -200) {
			portal.destroy();
			portals.splice(p, 1);
		}
	}
	// Check checkpoint collisions
	for (var c = checkpoints.length - 1; c >= 0; c--) {
		var checkpoint = checkpoints[c];
		// Skip if checkpoint is undefined
		if (!checkpoint) {
			checkpoints.splice(c, 1);
			continue;
		}
		if (bird.intersects(checkpoint) && !checkpoint.activated) {
			checkpoint.activated = true;
			lastCheckpointIndex = checkpoint.checkpointIndex;
			// Save checkpoint progress to storage
			storage.lastCheckpointIndex = lastCheckpointIndex;
			storage.checkpointBirdX = bird.x;
			storage.checkpointBirdY = bird.y;
			storage.checkpointScore = LK.getScore();
			storage.checkpointLevel = currentLevel;
			storage.checkpointHealth = playerHealth;
			storage.checkpointObstacleCounter = obstacleCounter;
			storage.checkpointMissedHearts = missedHearts;
			storage.checkpointPortalSpawned = portalSpawned;
			// Visual feedback for checkpoint activation
			LK.effects.flashScreen(0x9966ff, 500);
			LK.getSound('score').play();
			// Scale up and fade checkpoint
			tween(checkpoint, {
				scaleX: 6,
				scaleY: 6,
				alpha: 0
			}, {
				duration: 1000,
				easing: tween.easeOut,
				onFinish: function onFinish() {
					checkpoint.destroy();
				}
			});
			checkpoints.splice(c, 1);
			continue;
		}
		// Remove off-screen checkpoints
		if (checkpoint.x < -200) {
			checkpoint.destroy();
			checkpoints.splice(c, 1);
		}
	}
	// Check ceiling collision
	if (bird.y < 50) {
		bird.y = 50;
		bird.velocityY = 0;
	}
}
// Add checkpoint toggle button click handler
checkpointToggleButton.down = function (x, y, obj) {
	// Toggle checkpoint setting
	checkpointEnabled = !checkpointEnabled;
	storage.checkpointEnabled = checkpointEnabled;
	// Update button appearance
	checkpointToggleButton.setText(checkpointEnabled ? 'Checkpoint: AÇIK' : 'Checkpoint: KAPALI');
	checkpointToggleButton.tint = checkpointEnabled ? 0x00ff00 : 0xff0000;
};
game.down = function (x, y, obj) {
	if (!gameStarted) {
		startGame();
	}
	bird.flap();
};
game.update = function () {
	if (!gameStarted) return;
	// Create obstacles
	if (LK.ticks - lastObstacle > obstacleSpacing) {
		createObstacle();
	}
	// Create checkpoints after every obstacle near hearts
	if (obstacleCounter > 0) {
		// Only create if we don't already have a checkpoint for this obstacle count
		var checkpointExists = false;
		for (var cp = 0; cp < checkpoints.length; cp++) {
			if (checkpoints[cp].obstacleIndex === obstacleCounter) {
				checkpointExists = true;
				break;
			}
		}
		if (!checkpointExists) {
			createCheckpoint();
		}
	}
	// Create background shapes
	if (LK.ticks - lastBackgroundShape > backgroundShapeSpacing) {
		createBackgroundShape();
		lastBackgroundShape = LK.ticks;
	}
	// Spikes are now created after obstacles, no random creation needed
	// Hearts are now created after each obstacle, so no timer-based spawning needed
	// Update bird physics
	bird.update();
	// Update obstacles
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].update();
	}
	// Update hearts
	for (var h = 0; h < hearts.length; h++) {
		hearts[h].update();
	}
	// Update portals
	for (var p = 0; p < portals.length; p++) {
		portals[p].update();
	}
	// Update spikes
	for (var s = 0; s < spikes.length; s++) {
		spikes[s].update();
	}
	// Update bombs
	for (var b = 0; b < bombs.length; b++) {
		bombs[b].update();
	}
	// Update lasers
	for (var l = 0; l < lasers.length; l++) {
		lasers[l].update();
	}
	// Update checkpoints
	for (var cp = 0; cp < checkpoints.length; cp++) {
		checkpoints[cp].update();
	}
	// Update background shapes
	for (var j = backgroundShapes.length - 1; j >= 0; j--) {
		var bgShape = backgroundShapes[j];
		bgShape.update();
		// Remove off-screen background shapes
		if (bgShape.x < -200) {
			bgShape.destroy();
			backgroundShapes.splice(j, 1);
		}
	}
	// Check collisions
	checkCollisions();
	// Check individual obstacle passing for score increment
	for (var i = 0; i < obstacles.length; i++) {
		var obstacle = obstacles[i];
		// Check if bird passed obstacle and hasn't scored from it yet
		if (!obstacle.passed && !obstacle.scoredFrom && obstacle.x + 100 < bird.x) {
			obstacle.passed = true;
			obstacle.scoredFrom = true; // Mark as scored to prevent duplicate scoring
			LK.setScore(LK.getScore() + 1);
			storage.levelScore = LK.getScore(); // Save to storage
			scoreTxt.setText(LK.getScore());
			LK.getSound('score').play();
			updateLevelProgress();
		}
	}
	// Create portal when score reaches level threshold (10 + (level-1)*10)
	var currentLevelThreshold = levelScoreThreshold + (currentLevel - 1) * 10;
	if (LK.getScore() >= currentLevelThreshold && !portalSpawned) {
		var portal = new Portal();
		portal.x = 2200; // Start off-screen right
		portal.y = 1366; // Center of screen vertically
		portals.push(portal);
		game.addChild(portal);
		// Hide all existing obstacles when portal is created
		for (var hideIndex = 0; hideIndex < obstacles.length; hideIndex++) {
			obstacles[hideIndex].visible = false;
		}
		// Hide all hearts when portal is created
		for (var heartHideIndex = 0; heartHideIndex < hearts.length; heartHideIndex++) {
			hearts[heartHideIndex].visible = false;
		}
		// Hide all spikes when portal is created  
		for (var spikeHideIndex = 0; spikeHideIndex < spikes.length; spikeHideIndex++) {
			spikes[spikeHideIndex].visible = false;
		}
		// Hide all bombs when portal is created
		for (var bombHideIndex = 0; bombHideIndex < bombs.length; bombHideIndex++) {
			bombs[bombHideIndex].visible = false;
		}
		// Hide all lasers when portal is created
		for (var laserHideIndex = 0; laserHideIndex < lasers.length; laserHideIndex++) {
			lasers[laserHideIndex].visible = false;
		}
		portalSpawned = true;
	}
	// No time-based score increment - score only from obstacles
	// Level-based difficulty progression
	var baseSpacing = 400 - (currentLevel - 1) * 20;
	var minSpacing = Math.max(200, 300 - (currentLevel - 1) * 10);
	var reductionRate = 1 + currentLevel; // Increase reduction rate with level
	var currentSpacing = baseSpacing - LK.getScore() * reductionRate;
	obstacleSpacing = Math.max(minSpacing, currentSpacing);
};
function showGameOverWithLevelButton() {
	// Check if checkpoint is available
	var hasCheckpoint = (storage.lastCheckpointIndex || -1) >= 0;
	if (hasCheckpoint) {
		// Show checkpoint restore option before resetting
		var shouldRestore = restoreFromCheckpoint();
		if (shouldRestore) {
			return; // Don't show game over if checkpoint was restored
		}
	}
	resetToLevelStart();
	LK.showGameOver();
}