/**** 
* Classes
****/ 
// Define the Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -15;
	self.update = function () {
		self.y += self.speed;
	};
});
// Define the Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.y = 0;
		}
	};
});
// Define the Life class
var Life = Container.expand(function () {
	var self = Container.call(this);
	var lifeGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Define the Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.update = function () {
		// Player update logic
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x000000 //Init game with black background
});

/**** 
* Game Code
****/ 
// Add sky to the game
var sky = game.addChild(LK.getAsset('sky', {
	anchorX: 0.5,
	anchorY: 0.5
}));
sky.x = 2048 / 2;
sky.y = 2732 / 2;
// Add clouds to the game
for (var i = 0; i < 5; i++) {
	var cloud = game.addChild(LK.getAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	cloud.x = Math.random() * 2048;
	cloud.y = Math.random() * 2732;
}
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 150;
// Initialize player's lives
var lives = [];
for (var i = 0; i < 3; i++) {
	var life = new Life();
	life.x = 100 + i * 150;
	life.y = 100;
	lives.push(life);
	game.addChild(life);
}
// Initialize clouds
for (var i = 0; i < 5; i++) {
	var cloud = game.addChild(LK.getAsset('cloud', {
		anchorX: 0.5,
		anchorY: 0.5
	}));
	cloud.x = Math.random() * 2048;
	cloud.y = Math.random() * 2732;
}
// Initialize enemies
var enemies = [];
for (var i = 0; i < 5; i++) {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = Math.random() * 1000;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Create an infinite stream of enemies
LK.setInterval(function () {
	// Check if the number of enemies is less than 5
	if (enemies.length < 5) {
		for (var i = 0; i < 5 - enemies.length; i++) {
			var enemy = new Enemy();
			enemy.x = Math.random() * 2048;
			enemy.y = 0;
			enemies.push(enemy);
			game.addChild(enemy);
		}
	}
}, 2000);
// Initialize bullets
var bullets = [];
// Handle player movement
game.down = function (x, y, obj) {
	player.x = x;
	player.y = y;
};
// Handle shooting
game.up = function (x, y, obj) {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
};
// Update game state
game.update = function () {
	// Update player
	player.update();
	// Create enemies when the player reaches the middle of the screen
	if (player.lastY >= 2732 / 2 && player.y < 2732 / 2) {
		for (var i = 0; i < 5; i++) {
			var enemy = new Enemy();
			enemy.x = Math.random() * 2048;
			enemy.y = 0;
			enemies.push(enemy);
			game.addChild(enemy);
		}
	}
	// Update enemies
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].update();
		// Check if enemy has reached the bottom of the screen
		if (enemies[i].lastY < 2732 && enemies[i].y >= 2732) {
			// Remove a life
			var life = lives.pop();
			life.destroy();
			// Check if there are no more lives
			if (lives.length === 0) {
				// End the game
				LK.showGameOver();
			}
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		if (bullets[j].y < 0) {
			bullets[j].destroy();
			bullets.splice(j, 1);
		} else {
			// Check for collision with enemies
			for (var i = enemies.length - 1; i >= 0; i--) {
				if (bullets[j].intersects(enemies[i])) {
					// Destroy bullet and enemy
					bullets[j].destroy();
					bullets.splice(j, 1);
					enemies[i].destroy();
					enemies.splice(i, 1);
					// Increase score when an enemy is destroyed
					LK.setScore(LK.getScore() + 1);
					break;
				}
			}
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -153,9 +153,9 @@
 	// Update enemies
 	for (var i = 0; i < enemies.length; i++) {
 		enemies[i].update();
 		// Check if enemy has reached the bottom of the screen
-		if (enemies[i].y >= 2732) {
+		if (enemies[i].lastY < 2732 && enemies[i].y >= 2732) {
 			// Remove a life
 			var life = lives.pop();
 			life.destroy();
 			// Check if there are no more lives