/**** 
* 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.speedY = 5;
	self.flyUp = false;
	self.move = function () {
		// Bird falls down
		self.y += self.speedY;
		// If bird is flying up, decrease its y position
		if (self.flyUp) {
			self.speedY -= 80;
			if (self.speedY <= -10) {
				self.flyUp = false;
			}
		} else {
			self.speedY += 10;
			if (self.speedY > 10) {
				self.speedY = 11;
			}
		}
	};
});
// Obstacle class
var Obstacle = Container.expand(function () {
	var self = Container.call(this);
	var obstacleGraphics = self.attachAsset('obstacle', {
		anchorX: 0.5,
		anchorY: 0.5,
		shape: 'ellipse'
	});
	self.speedX = -5;
	self.move = function () {
		// Obstacle moves from right to left
		self.x += self.speedX;
		// Rotate obstacle counterclockwise
		self.rotation -= 0.11;
	};
});

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

/**** 
* Game Code
****/ 
// Add background to the game
var background = game.addChild(LK.getAsset('background', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2048 / 2
}));
var bird = game.addChild(new Bird());
bird.x = 350; // Start in the middle of the screen horizontally
bird.y = 1366; // Start in the middle of the screen vertically
// Add touch event listener to make bird move up and down smoothly
game.on('down', function (obj) {
	bird.flyUp = true;
	bird.rotation += Math.PI / 2; // Rotate 90 degrees
	bird.scale.y = 0.7; // Reduce bird size vertically by 10%
	LK.setTimeout(function () {
		bird.scale.y = 1; // Return bird to original size after 100ms
	}, 100);
});
var obstacles = [];
var obstacleCreationCounter = 0;
var score = 0; // Add a variable to track the player's score
LK.on('tick', function () {
	bird.move();
	// Create a new obstacle every 30 ticks (approximately 0.6 seconds)
	obstacleCreationCounter++;
	if (obstacleCreationCounter >= 30) {
		var newObstacle = game.addChild(new Obstacle());
		newObstacle.x = 2048; // Start at the right edge of the screen
		newObstacle.y = Math.random() * 2732; // Start at a random height
		// Make every 10th obstacle move at a speed of -10
		if (obstacles.length % 10 == 0) {
			newObstacle.speedX = -10;
		}
		obstacles.push(newObstacle);
		obstacleCreationCounter = 0;
	}
	// If the player's score is 13 or more, make the obstacles move up and down
	if (score >= 13) {
		for (var i = 0; i < obstacles.length; i++) {
			var obstacle = obstacles[i];
			obstacle.y += Math.sin(obstacle.x * 0.01) * 5; // Change the y position of the obstacle based on a sine wave
		}
	}
	// Move each obstacle and check for collisions
	for (var i = 0; i < obstacles.length; i++) {
		var obstacle = obstacles[i];
		obstacle.move();
		// Check if bird has collided with the obstacle
		var dx = bird.x - obstacle.x;
		var dy = bird.y - obstacle.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		if (distance < bird.width / 2 + obstacle.width / 2) {
			// Flash screen red for 1 second (1000ms) to show game over.
			LK.effects.flashScreen(0xff0000, 1000);
			// Show game over. The game will be automatically paused while game over is showing.
			// Display the final score at the center of the screen
			var gameOverScoreTxt = new Text2(score.toString(), {
				size: 200,
				fill: "#FFFFFF"
			});
			gameOverScoreTxt.anchor.set(0.5, 0.5); // Anchor to the center
			gameOverScoreTxt.x = 2048 / 2; // Position at the center of the screen horizontally
			gameOverScoreTxt.y = 2732 / 4; // Position at the center of the screen vertically
			game.addChild(gameOverScoreTxt);
			LK.showGameOver();
		}
	}
	// Check if bird has fallen off the screen or risen above the screen
	var dx = bird.x - 2048 / 2;
	var dy = bird.y - 2670 / 2;
	var distance = Math.sqrt(dx * dx + dy * dy);
	if (distance > 3000 / 2) {
		// Flash screen red for 1 second (1000ms) to show game over.
		LK.effects.flashScreen(0xff0000, 1000);
		// Show game over. The game will be automatically paused while game over is showing.
		// Display the final score at the center of the screen
		var gameOverScoreTxt = new Text2(score.toString(), {
			size: 200,
			fill: "#FFFFFF"
		});
		gameOverScoreTxt.anchor.set(0.5, 0.5); // Anchor to the center
		gameOverScoreTxt.x = 2048 / 2; // Position at the center of the screen horizontally
		gameOverScoreTxt.y = 2732 / 4; // Position at the center of the screen vertically
		game.addChild(gameOverScoreTxt);
		LK.showGameOver();
	}
});
// Initialize bird and obstacles
// Yellow bird
// Brown obstacles;
var obstacle = game.addChild(new Obstacle());
obstacle.x = 2120; // Start at the right edge of the screen
obstacle.y = Math.random() * 2732; // Start at a random height;
// Initialize score counter
var score = 0;
var scoreTxt = new Text2(score.toString(), {
	size: 100,
	fill: "#FFFFFF"
});
scoreTxt.anchor.set(1, 0); // Anchor to the top right corner
LK.gui.topRight.addChild(scoreTxt);
// Update score every 2 seconds
LK.setInterval(function () {
	score++;
	scoreTxt.setText(score.toString());
}, 1500);

===================================================================
--- original.js
+++ change.js
@@ -91,10 +91,10 @@
 		}
 		obstacles.push(newObstacle);
 		obstacleCreationCounter = 0;
 	}
-	// If the player's score is 10 or more, make the obstacles move up and down
-	if (score >= 10) {
+	// If the player's score is 13 or more, make the obstacles move up and down
+	if (score >= 13) {
 		for (var i = 0; i < obstacles.length; i++) {
 			var obstacle = obstacles[i];
 			obstacle.y += Math.sin(obstacle.x * 0.01) * 5; // Change the y position of the obstacle based on a sine wave
 		}