/**** 
* Classes
****/ 
var Ball = Container.expand(function () {
	var self = Container.call(this);
	// Attach ball graphics
	var ballGraphics = self.attachAsset('ball', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Physics properties
	self.velocityX = 0;
	self.velocityY = 0;
	self.gravity = 0.3;
	self.bounce = 0.8;
	// Update physics and bouncing
	self.update = function () {
		// Apply gravity
		self.velocityY += self.gravity;
		// Update position
		self.x += self.velocityX;
		self.y += self.velocityY;
		// Bounce off left and right walls
		if (self.x <= 40 || self.x >= 2008) {
			self.velocityX = -self.velocityX * self.bounce;
			self.x = self.x <= 40 ? 40 : 2008;
		}
		// Define invisible barrier at one-third of screen height
		var barrierY = 2732 / 3; // One-third from top
		// Bounce off invisible barrier (top third) and bottom wall
		if (self.y <= barrierY || self.y >= 2692) {
			self.velocityY = -self.velocityY * self.bounce;
			self.y = self.y <= barrierY ? barrierY : 2692;
		}
		// Ensure minimum velocity to keep ball moving
		var minVelocity = 2;
		if (Math.abs(self.velocityX) < minVelocity && Math.abs(self.velocityY) < minVelocity) {
			// Add random velocity if ball is moving too slowly
			self.velocityX = (Math.random() - 0.5) * minVelocity * 2;
			self.velocityY = Math.random() > 0.5 ? -minVelocity : minVelocity;
		}
	};
	return self;
});
var Cloud = Container.expand(function () {
	var self = Container.call(this);
	// Attach cloud graphics
	var cloudGraphics = self.attachAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	// Movement properties
	self.velocityX = (Math.random() - 0.5) * 2; // Random horizontal movement
	self.velocityY = 0;
	// Update cloud movement
	self.update = function () {
		// Move cloud
		self.x += self.velocityX;
		// Wrap around screen horizontally
		if (self.x < -75) {
			self.x = 2048 + 75;
		} else if (self.x > 2048 + 75) {
			self.x = -75;
		}
	};
	return self;
});

/**** 
* Initialize Game
****/ 
// Create and add the ball to the game
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
// Create and add the ball to the game
var ball = game.addChild(new Ball());
// Add sun decoration to top-right corner
var sun = game.addChild(LK.getAsset('sun', {
	anchorX: 0.5,
	anchorY: 0.5
}));
sun.x = 2048 - 150; // Position near right edge
sun.y = 150; // Position near top edge
// Add sun rays around the sun
var sunRays = [];
var numRays = 8;
for (var i = 0; i < numRays; i++) {
	var ray = game.addChild(LK.getAsset('sunRay', {
		anchorX: 0,
		anchorY: 0.5
	}));
	ray.x = sun.x;
	ray.y = sun.y;
	ray.rotation = i * Math.PI * 2 / numRays;
	sunRays.push(ray);
}
// Position ball at center of screen
ball.x = 2048 / 2;
ball.y = 2732 / 2;
// Cloud generation and management
var clouds = [];
var cloudTimer = 0;
var cloudSpawnInterval = 180; // Spawn cloud every 3 seconds (60fps * 3)
// Game update loop
game.update = function () {
	// Cloud generation timer
	cloudTimer++;
	if (cloudTimer >= cloudSpawnInterval) {
		cloudTimer = 0;
		// Create new cloud at random position
		var newCloud = new Cloud();
		newCloud.x = Math.random() * 2048;
		newCloud.y = Math.random() * (2732 / 3 - 100) + 50; // Only in upper two-thirds, avoiding barrier
		clouds.push(newCloud);
		game.addChild(newCloud);
	}
	// Check ball collision with clouds
	for (var i = clouds.length - 1; i >= 0; i--) {
		var cloud = clouds[i];
		if (ball.intersects(cloud)) {
			// Ball bounces off cloud
			ball.velocityY = -Math.abs(ball.velocityY) * 0.8; // Bounce upward
			ball.velocityX += cloud.velocityX * 0.5; // Transfer some cloud momentum
			// Remove cloud on impact
			cloud.destroy();
			clouds.splice(i, 1);
		}
	}
};
// Touch interaction to set ball position to touch location
game.down = function (x, y, obj) {
	// Set ball position to touch location
	ball.x = x;
	ball.y = y;
	// Keep horizontal velocity but reset vertical velocity to maintain bouncing
	ball.velocityY = 0;
};

===================================================================
--- original.js
+++ change.js
@@ -41,8 +41,31 @@
 		}
 	};
 	return self;
 });
+var Cloud = Container.expand(function () {
+	var self = Container.call(this);
+	// Attach cloud graphics
+	var cloudGraphics = self.attachAsset('cloud', {
+		anchorX: 0.5,
+		anchorY: 0.5
+	});
+	// Movement properties
+	self.velocityX = (Math.random() - 0.5) * 2; // Random horizontal movement
+	self.velocityY = 0;
+	// Update cloud movement
+	self.update = function () {
+		// Move cloud
+		self.x += self.velocityX;
+		// Wrap around screen horizontally
+		if (self.x < -75) {
+			self.x = 2048 + 75;
+		} else if (self.x > 2048 + 75) {
+			self.x = -75;
+		}
+	};
+	return self;
+});
 
 /**** 
 * Initialize Game
 ****/ 
@@ -78,8 +101,38 @@
 }
 // Position ball at center of screen
 ball.x = 2048 / 2;
 ball.y = 2732 / 2;
+// Cloud generation and management
+var clouds = [];
+var cloudTimer = 0;
+var cloudSpawnInterval = 180; // Spawn cloud every 3 seconds (60fps * 3)
+// Game update loop
+game.update = function () {
+	// Cloud generation timer
+	cloudTimer++;
+	if (cloudTimer >= cloudSpawnInterval) {
+		cloudTimer = 0;
+		// Create new cloud at random position
+		var newCloud = new Cloud();
+		newCloud.x = Math.random() * 2048;
+		newCloud.y = Math.random() * (2732 / 3 - 100) + 50; // Only in upper two-thirds, avoiding barrier
+		clouds.push(newCloud);
+		game.addChild(newCloud);
+	}
+	// Check ball collision with clouds
+	for (var i = clouds.length - 1; i >= 0; i--) {
+		var cloud = clouds[i];
+		if (ball.intersects(cloud)) {
+			// Ball bounces off cloud
+			ball.velocityY = -Math.abs(ball.velocityY) * 0.8; // Bounce upward
+			ball.velocityX += cloud.velocityX * 0.5; // Transfer some cloud momentum
+			// Remove cloud on impact
+			cloud.destroy();
+			clouds.splice(i, 1);
+		}
+	}
+};
 // Touch interaction to set ball position to touch location
 game.down = function (x, y, obj) {
 	// Set ball position to touch location
 	ball.x = x;