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

/**** 
* Classes
****/ 
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();
	};
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		self.y += self.velocityY;
		// Keep bird graphics without rotation
		birdGraphics.rotation = 0;
		// 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 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 gear-specific properties
	if (randomType === 'gear') {
		self.rotationSpeed = 0.05; // Faster rotation for gears
		self.speed = 0; // Gears don't move horizontally
		self.isStationary = true;
	}
	// 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
	}
	self.update = function () {
		// Only move if not stationary
		if (!self.isStationary) {
			self.x += self.speed;
		}
		// Add pulsing effect only for non-gear and non-rest platform obstacles
		if (self.obstacleType !== 'gear' && 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;
});

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

/**** 
* Game Code
****/ 
var bird;
var obstacles = [];
var ground;
var gameStarted = false;
var lastObstacle = 0;
var obstacleSpacing = 400;
var currentLevel = storage.currentLevel || 1;
var unlockedLevels = storage.unlockedLevels || 1;
var totalScore = storage.totalScore || 0;
var levelScoreThreshold = 10; // Score needed to unlock next level
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 maxHealth = 3; // Maximum health
// 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;
// Create level display
var levelTxt = new Text2('Level ' + currentLevel, {
	size: 60,
	fill: 0xFFD700
});
levelTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(levelTxt);
levelTxt.y = 200;
// Create level progress display
var progressTxt = new Text2('Progress: 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('Lives: ' + playerHealth, {
	size: 50,
	fill: 0xff0000
});
healthTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(healthTxt);
healthTxt.y = 340;
// Create instructions
var instructionTxt = new Text2('TAP TO FLIP AND FLY\nBOUNCE OFF OBSTACLES!', {
	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();
function generateLevelObstacleSequence() {
	levelObstacleTypes = [];
	var baseTypes = ['spike', 'block', 'tallBlock', 'platform', 'gear', 'restPlatform'];
	var sequenceLength = 50; // Generate enough types for a full level
	var seed = currentLevel * 12345; // Level-based seed for consistent sequences
	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;
	// Update progress display
	progressTxt.setText('Progress: ' + levelProgress + '/' + progressNeeded);
	// Check if level is completed
	if (levelProgress >= progressNeeded) {
		// Level completed
		totalScore += levelProgress;
		storage.totalScore = totalScore;
		// Unlock next level if not already unlocked
		if (currentLevel >= unlockedLevels) {
			unlockedLevels = currentLevel + 1;
			storage.unlockedLevels = unlockedLevels;
			LK.effects.flashScreen(0x00ff00, 1000); // Green flash for level completion
		}
		// Advance to next level
		currentLevel++;
		storage.currentLevel = currentLevel;
		levelTxt.setText('Level ' + currentLevel);
		// Reset score for new level
		LK.setScore(0);
		scoreTxt.setText(0);
		// Reset obstacle counter for consistent level maps
		obstacleCounter = 0;
		// Generate new obstacle sequence for the new level
		generateLevelObstacleSequence();
		updateLevelProgress();
		// Increase difficulty for new level
		updateDifficultyForLevel();
	}
}
function updateDifficultyForLevel() {
	// Each level increases difficulty
	var difficultyMultiplier = 1 + (currentLevel - 1) * 0.3;
	// Adjust obstacle spacing based on level
	obstacleSpacing = Math.max(200, 400 - (currentLevel - 1) * 20);
	// Adjust bird physics slightly for higher levels
	if (currentLevel > 3) {
		bird.gravity = 0.8 + (currentLevel - 3) * 0.1;
	}
}
function resetToLevelStart() {
	// Reset score to level start
	LK.setScore(0);
	scoreTxt.setText(0);
	// Reset health
	playerHealth = maxHealth;
	healthTxt.setText('Lives: ' + playerHealth);
	// Clear all obstacles
	for (var i = obstacles.length - 1; i >= 0; i--) {
		obstacles[i].destroy();
		obstacles.splice(i, 1);
	}
	// Reset obstacle counter
	obstacleCounter = 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();
	// Create initial obstacle
	createObstacle();
}
function takeDamage() {
	playerHealth--;
	healthTxt.setText('Lives: ' + 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) {
		resetToLevelStart();
	}
}
function resetHealth() {
	playerHealth = maxHealth;
	healthTxt.setText('Lives: ' + playerHealth);
}
function startGame() {
	if (!gameStarted) {
		gameStarted = true;
		game.removeChild(instructionTxt);
		// 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 createObstacle() {
	// Create walls that cover full screen with a gap for the bird
	var baseX = 2148;
	var gapSize = 400; // Size of the gap for bird to pass through (increased for larger bird)
	// Use seeded random based on current level and obstacle counter for consistent maps
	var seed = (currentLevel * 1000 + obstacleCounter) % 9973; // Use prime number for better distribution
	var seededRandom = (seed * 9301 + 49297) % 233280 / 233280; // Linear congruential generator
	var gapPosition = seededRandom * (2200 - gapSize) + 300; // Seeded gap position between 300-2200
	var obstacleHeight = 400; // Height of each obstacle segment
	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);
	}
	obstacleCounter++;
	lastObstacle = LK.ticks;
}
function checkCollisions() {
	// Check ground collision
	if (bird.y + 60 >= ground.y) {
		if (!bird.isUpright()) {
			takeDamage();
			if (playerHealth > 0) {
				// Push bird back up if still alive
				bird.velocityY = -12;
				bird.y = ground.y - 60;
			}
			return;
		} else {
			// Successful landing - award points
			if (bird.completedFlips > 0) {
				LK.setScore(LK.getScore() + bird.completedFlips);
				scoreTxt.setText(LK.getScore());
				LK.getSound('score').play();
				updateLevelProgress();
				bird.completedFlips = 0;
				// Bounce back up
				bird.velocityY = -8;
				bird.y = ground.y - 60;
			}
		}
	}
	// 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 gear - immediate elimination
			if (obstacle.obstacleType === 'gear') {
				// Flash screen red and reset to level start
				LK.effects.flashScreen(0xff0000, 500);
				resetToLevelStart();
				return;
			}
			// 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;
				}
				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
		if (!obstacle.passed && obstacle.x + 100 < bird.x) {
			obstacle.passed = true;
			if (bird.isUpright() && bird.completedFlips > 0) {
				LK.setScore(LK.getScore() + 1);
				scoreTxt.setText(LK.getScore());
				LK.getSound('score').play();
				updateLevelProgress();
			}
		}
		// 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 ceiling collision
	if (bird.y < 50) {
		bird.y = 50;
		bird.velocityY = 0;
	}
}
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();
	}
	// Update bird physics
	bird.update();
	// Update obstacles
	for (var i = 0; i < obstacles.length; i++) {
		obstacles[i].update();
	}
	// Check collisions
	checkCollisions();
	// 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);
};

===================================================================
--- original.js
+++ change.js
@@ -16,8 +16,11 @@
 	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;
@@ -176,9 +179,9 @@
 ground.y = 2632;
 // Create bird
 bird = game.addChild(new Bird());
 bird.x = 300;
-bird.y = 1366;
+bird.y = 800;
 // Generate initial obstacle sequence for current level
 generateLevelObstacleSequence();
 // Create initial obstacles at game start
 createObstacle();
@@ -250,9 +253,9 @@
 	// Reset obstacle counter
 	obstacleCounter = 0;
 	// Reset bird position
 	bird.x = 300;
-	bird.y = 1366;
+	bird.y = 800;
 	bird.velocityY = 0;
 	bird.completedFlips = 0;
 	// Regenerate obstacle sequence for current level
 	generateLevelObstacleSequence();