/**** 
* Classes
****/ 
// Assets will be automatically created based on usage in the code.
// Bird class
var Bird = Container.expand(function () {
	var self = Container.call(this);
	var birdGraphics = self.attachAsset('bird', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.gravity = 0.25;
	self.lift = -6;
	self.velocity = 0;
	self.flap = function () {
		self.velocity += self.lift;
	};
	self._update_migrated = function () {
		self.velocity += self.gravity;
		self.y += self.velocity;
		if (self.y > 2732 - birdGraphics.height / 2) {
			self.y = 2732 - birdGraphics.height / 2;
			self.velocity = 0;
		}
		if (self.y < birdGraphics.height / 2) {
			self.y = birdGraphics.height / 2;
			self.velocity = 0;
		}
	};
});
// Cloud class
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	var cloudGraphics = self.attachAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -2;
	self._move_migrated = function () {
		self.x += self.speed;
	};
});
// Pipe class
var Pipe = Container.expand(function (isTop, height) {
	var self = Container.call(this);
	var pipeGraphics = self.attachAsset(isTop ? 'pipeTop' : 'pipeBottom', {
		anchorX: 0.5,
		anchorY: isTop ? 1 : 0
	});
	self.height = height;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB // Light blue background to simulate sky
});

/**** 
* Game Code
****/ 
var bird;
var pipes = [];
var gap = 400;
var pipeWidth = 148; // Assuming a pipe width, since it's not specified
var pipeInterval = 1800; // Time in milliseconds between pipe spawns
var lastPipeTime = 0;
// Initialize bird
function initBird() {
	bird = new Bird();
	bird.x = 2048 / 4;
	bird.y = 2732 / 2;
	game.addChild(bird);
}
// Initialize clouds
var clouds = [];
for (var i = 0; i < 5; i++) {
	var cloud = new Cloud();
	cloud.x = Math.random() * 2048;
	cloud.y = Math.random() * 2732;
	clouds.push(cloud);
	game.addChild(cloud);
}
// Function to add pipes
function addPipe() {
	var topPipeHeight = Math.floor(Math.random() * (2732 - gap)) + 100; // Random height for top pipe
	var bottomPipeHeight = 2732 - topPipeHeight - gap;
	var topPipe = new Pipe(true, topPipeHeight);
	topPipe.x = 2048;
	topPipe.y = 0;
	pipes.push(topPipe);
	game.addChild(topPipe);
	var bottomPipe = new Pipe(false, bottomPipeHeight);
	bottomPipe.x = 2048;
	bottomPipe.y = 2732 - bottomPipeHeight;
	pipes.push(bottomPipe);
	game.addChild(bottomPipe);
}
// Function to update pipes
function updatePipes() {
	for (var i = pipes.length - 1; i >= 0; i--) {
		pipes[i].x -= 5;
		if (pipes[i].x + pipeWidth < 0) {
			pipes[i].destroy();
			pipes.splice(i, 1);
			// Increase score when bird passes a pipe
			score++;
		}
	}
}
// Function to check collision
function checkCollision() {
	for (var i = 0; i < pipes.length; i++) {
		if (bird.intersects(pipes[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
			// Display the score when the game is over
			console.log("Score: " + score);
		}
	}
}
// Initialize game elements
initBird();
// Initialize score
var score = 0;
// Touch event to make the bird flap
game.on('down', function () {
	bird.flap();
});
// Game tick event
LK.on('tick', function () {
	var currentTime = Date.now();
	if (currentTime - lastPipeTime > pipeInterval) {
		addPipe();
		lastPipeTime = currentTime;
	}
	bird._update_migrated();
	updatePipes();
	checkCollision();
	// Update clouds
	for (var i = clouds.length - 1; i >= 0; i--) {
		clouds[i]._move_migrated();
		if (clouds[i].x < -200) {
			clouds[i].x = 2048;
			clouds[i].y = Math.random() * 2732;
		}
	}
});

===================================================================
--- original.js
+++ change.js
@@ -14,9 +14,9 @@
 	self.velocity = 0;
 	self.flap = function () {
 		self.velocity += self.lift;
 	};
-	self.update = function () {
+	self._update_migrated = function () {
 		self.velocity += self.gravity;
 		self.y += self.velocity;
 		if (self.y > 2732 - birdGraphics.height / 2) {
 			self.y = 2732 - birdGraphics.height / 2;
@@ -35,9 +35,9 @@
 		anchorX: 0.5,
 		anchorY: 0.5
 	});
 	self.speed = -2;
-	self.move = function () {
+	self._move_migrated = function () {
 		self.x += self.speed;
 	};
 });
 // Pipe class
@@ -134,14 +134,14 @@
 	if (currentTime - lastPipeTime > pipeInterval) {
 		addPipe();
 		lastPipeTime = currentTime;
 	}
-	bird.update();
+	bird._update_migrated();
 	updatePipes();
 	checkCollision();
 	// Update clouds
 	for (var i = clouds.length - 1; i >= 0; i--) {
-		clouds[i].move();
+		clouds[i]._move_migrated();
 		if (clouds[i].x < -200) {
 			clouds[i].x = 2048;
 			clouds[i].y = Math.random() * 2732;
 		}