/**** 
* 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.flapPower = -12;
	self.maxVelocity = 15;
	self.minVelocity = -15;
	self.flap = function () {
		self.velocity = self.flapPower;
		LK.getSound('flap').play();
		// Add slight rotation animation
		tween(birdGraphics, {
			rotation: -0.3
		}, {
			duration: 100
		});
		tween(birdGraphics, {
			rotation: 0.5
		}, {
			duration: 200,
			onFinish: function onFinish() {
				tween(birdGraphics, {
					rotation: 0
				}, {
					duration: 300
				});
			}
		});
	};
	self.update = function () {
		// Apply gravity
		self.velocity += self.gravity;
		// Limit velocity
		if (self.velocity > self.maxVelocity) self.velocity = self.maxVelocity;
		if (self.velocity < self.minVelocity) self.velocity = self.minVelocity;
		// Update position
		self.y += self.velocity;
		// Rotate bird based on velocity
		var targetRotation = Math.max(-0.5, Math.min(0.8, self.velocity * 0.05));
		birdGraphics.rotation = targetRotation;
	};
	return self;
});
var Pipe = Container.expand(function () {
	var self = Container.call(this);
	self.speed = -4;
	self.scored = false;
	// Create top pipe
	self.topPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 1
	});
	// Create bottom pipe
	self.bottomPipe = self.attachAsset('pipe', {
		anchorX: 0.5,
		anchorY: 0
	});
	self.setGap = function (centerY, gapSize) {
		self.topPipe.y = centerY - gapSize / 2;
		self.bottomPipe.y = centerY + gapSize / 2;
	};
	self.update = function () {
		self.x += self.speed;
	};
	return self;
});

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

/**** 
* Game Code
****/ 
// Game variables
var bird;
var pipes = [];
var ground;
var gameStarted = false;
var gameOver = false;
var gameState = 'menu'; // 'menu', 'playing', 'gameOver'
var pipeSpawnTimer = 0;
var pipeSpawnInterval = 90; // frames
var gapSize = 250; // Reduced for mobile
var scrollSpeed = 4;
// Mobile-optimized dimensions
var GAME_WIDTH = 1536; // Reduced from 2048
var GAME_HEIGHT = 2048; // Reduced from 2732
// UI Elements
var scoreTxt = new Text2('0', {
	size: 70,
	// Slightly smaller for mobile
	fill: 0xFFFFFF
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Menu elements
var titleTxt = new Text2('FLAPPY WINGS', {
	size: 80,
	fill: 0xFFD700
});
titleTxt.anchor.set(0.5, 0.5);
titleTxt.x = GAME_WIDTH / 2;
titleTxt.y = GAME_HEIGHT / 2 - 300;
game.addChild(titleTxt);
var playButtonTxt = new Text2('TAP TO PLAY', {
	size: 50,
	fill: 0xFFFFFF
});
playButtonTxt.anchor.set(0.5, 0.5);
playButtonTxt.x = GAME_WIDTH / 2;
playButtonTxt.y = GAME_HEIGHT / 2 - 100;
game.addChild(playButtonTxt);
var highScoreTxt = new Text2('Best: 0', {
	size: 40,
	fill: 0xFFFFFF
});
highScoreTxt.anchor.set(0.5, 0.5);
highScoreTxt.x = GAME_WIDTH / 2;
highScoreTxt.y = GAME_HEIGHT / 2 + 50;
game.addChild(highScoreTxt);
var instructionTxt = new Text2('TAP TO FLAP', {
	size: 45,
	fill: 0xFFFFFF
});
instructionTxt.anchor.set(0.5, 0.5);
instructionTxt.x = GAME_WIDTH / 2;
instructionTxt.y = GAME_HEIGHT / 2 + 150;
instructionTxt.visible = false;
game.addChild(instructionTxt);
// Game over elements
var gameOverTxt = new Text2('GAME OVER', {
	size: 70,
	fill: 0xFF0000
});
gameOverTxt.anchor.set(0.5, 0.5);
gameOverTxt.x = GAME_WIDTH / 2;
gameOverTxt.y = GAME_HEIGHT / 2 - 100;
gameOverTxt.visible = false;
game.addChild(gameOverTxt);
var restartTxt = new Text2('TAP TO RESTART', {
	size: 45,
	fill: 0xFFFFFF
});
restartTxt.anchor.set(0.5, 0.5);
restartTxt.x = GAME_WIDTH / 2;
restartTxt.y = GAME_HEIGHT / 2 + 50;
restartTxt.visible = false;
game.addChild(restartTxt);
// Initialize bird
bird = game.addChild(new Bird());
bird.x = GAME_WIDTH / 4;
bird.y = GAME_HEIGHT / 2;
bird.visible = false; // Hide until game starts
// Create ground
ground = game.addChild(LK.getAsset('ground', {
	anchorX: 0,
	anchorY: 1
}));
ground.x = 0;
ground.y = GAME_HEIGHT;
ground.width = GAME_WIDTH; // Scale to mobile width
// Function to spawn pipe
function spawnPipe() {
	var pipe = new Pipe();
	var centerY = 300 + Math.random() * (GAME_HEIGHT - 500 - gapSize);
	pipe.setGap(centerY, gapSize);
	pipe.x = GAME_WIDTH + 100;
	pipes.push(pipe);
	game.addChild(pipe);
}
// Function to start game
function startGame() {
	if (gameState === 'menu') {
		gameState = 'playing';
		gameStarted = true;
		// Hide menu elements
		titleTxt.visible = false;
		playButtonTxt.visible = false;
		highScoreTxt.visible = false;
		// Show game elements
		bird.visible = true;
		instructionTxt.visible = true;
		scoreTxt.visible = true;
		bird.flap();
		// Hide instruction after a delay
		LK.setTimeout(function () {
			instructionTxt.visible = false;
		}, 2000);
	}
}
// Function to reset game
function resetGame() {
	// Clean up pipes
	for (var i = 0; i < pipes.length; i++) {
		pipes[i].destroy();
	}
	pipes = [];
	// Reset bird
	bird.x = GAME_WIDTH / 4;
	bird.y = GAME_HEIGHT / 2;
	bird.velocity = 0;
	bird.visible = false;
	// Update high score
	var currentScore = LK.getScore();
	var bestScore = storage.highScore || 0;
	if (currentScore > bestScore) {
		storage.highScore = currentScore;
		bestScore = currentScore;
	}
	// Reset game state
	gameState = 'menu';
	gameStarted = false;
	gameOver = false;
	pipeSpawnTimer = 0;
	LK.setScore(0);
	scoreTxt.setText('0');
	// Show menu elements
	titleTxt.visible = true;
	playButtonTxt.visible = true;
	highScoreTxt.visible = true;
	highScoreTxt.setText('Best: ' + bestScore);
	instructionTxt.visible = false;
	gameOverTxt.visible = false;
	restartTxt.visible = false;
	scoreTxt.visible = false;
}
// Touch/click handlers
game.down = function (x, y, obj) {
	if (gameState === 'menu') {
		startGame();
	} else if (gameState === 'playing' && !gameOver) {
		bird.flap();
	} else if (gameState === 'gameOver') {
		resetGame();
	}
};
// Main game loop
game.update = function () {
	if (!gameStarted || gameOver) return;
	// Spawn pipes
	pipeSpawnTimer++;
	if (pipeSpawnTimer >= pipeSpawnInterval) {
		spawnPipe();
		pipeSpawnTimer = 0;
	}
	// Update pipes
	for (var i = pipes.length - 1; i >= 0; i--) {
		var pipe = pipes[i];
		// Check for scoring
		if (!pipe.scored && pipe.x + 60 < bird.x) {
			pipe.scored = true;
			LK.setScore(LK.getScore() + 1);
			scoreTxt.setText(LK.getScore());
			LK.getSound('score').play();
		}
		// Check collision with bird
		var birdBounds = {
			x: bird.x - 40,
			y: bird.y - 30,
			width: 80,
			height: 60
		};
		var topPipeBounds = {
			x: pipe.x - 60,
			y: 0,
			width: 120,
			height: pipe.topPipe.y
		};
		var bottomPipeBounds = {
			x: pipe.x - 60,
			y: pipe.bottomPipe.y,
			width: 120,
			height: 2732 - pipe.bottomPipe.y
		};
		// Check collision
		if (birdBounds.x < topPipeBounds.x + topPipeBounds.width && birdBounds.x + birdBounds.width > topPipeBounds.x && birdBounds.y < topPipeBounds.y + topPipeBounds.height && birdBounds.y + birdBounds.height > topPipeBounds.y || birdBounds.x < bottomPipeBounds.x + bottomPipeBounds.width && birdBounds.x + birdBounds.width > bottomPipeBounds.x && birdBounds.y < bottomPipeBounds.y + bottomPipeBounds.height && birdBounds.y + birdBounds.height > bottomPipeBounds.y) {
			gameOver = true;
			gameState = 'gameOver';
			LK.getSound('hit').play();
			LK.effects.flashScreen(0xff0000, 500);
			// Show game over UI
			gameOverTxt.visible = true;
			restartTxt.visible = true;
			scoreTxt.visible = false;
			return;
		}
		// Remove off-screen pipes
		if (pipe.x < -200) {
			pipe.destroy();
			pipes.splice(i, 1);
		}
	}
	// Check ground collision
	if (bird.y + 30 >= ground.y) {
		gameOver = true;
		gameState = 'gameOver';
		LK.getSound('hit').play();
		LK.effects.flashScreen(0xff0000, 500);
		// Show game over UI
		gameOverTxt.visible = true;
		restartTxt.visible = true;
		scoreTxt.visible = false;
		return;
	}
	// Check ceiling collision
	if (bird.y - 30 <= 0) {
		gameOver = true;
		gameState = 'gameOver';
		LK.getSound('hit').play();
		LK.effects.flashScreen(0xff0000, 500);
		// Show game over UI
		gameOverTxt.visible = true;
		restartTxt.visible = true;
		scoreTxt.visible = false;
		return;
	}
};

===================================================================
--- original.js
+++ change.js
@@ -218,11 +218,11 @@
 	bird.velocity = 0;
 	bird.visible = false;
 	// Update high score
 	var currentScore = LK.getScore();
-	var bestScore = storage.getInt('highScore', 0);
+	var bestScore = storage.highScore || 0;
 	if (currentScore > bestScore) {
-		storage.setInt('highScore', currentScore);
+		storage.highScore = currentScore;
 		bestScore = currentScore;
 	}
 	// Reset game state
 	gameState = 'menu';