/**** 
* Classes
****/ 
// Block class
var Block = Container.expand(function () {
	var self = Container.call(this);
	var blockGraphics = self.attachAsset('block', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 10;
	self.horizontalSpeed = Math.random() < 0.5 ? -2 : 2; // Random initial horizontal direction
	self.update = function () {
		self.y += self.speed;
		self.x += self.horizontalSpeed;
		if (self.x < 0 || self.x > 2048) {
			self.horizontalSpeed *= -1; // Reverse direction when hitting screen edges
		}
		if (self.y > 2732 + 50) {
			self.destroy();
			blocks.splice(blocks.indexOf(self), 1);
		}
	};
});
// 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;
		if (self.y < -50) {
			self.destroy();
			bullets.splice(bullets.indexOf(self), 1);
		}
	};
});
//<Assets used in the game will automatically appear here>
// Plane class
var Plane = Container.expand(function () {
	var self = Container.call(this);
	var planeGraphics = self.attachAsset('plane', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5
	});
	self.shoot = function () {
		var bullet = new Bullet();
		bullet.x = self.x;
		bullet.y = self.y - planeGraphics.height / 2;
		game.addChild(bullet);
		bullets.push(bullet);
	};
});

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

/**** 
* Game Code
****/ 
var backgroundPeople = LK.getAsset('backgroundPeople', {
	anchorX: 0.5,
	anchorY: 0.5,
	x: 2048 / 2,
	y: 2732 / 2
});
game.addChild(backgroundPeople);
var plane = new Plane();
plane.x = 2048 / 2;
plane.y = 2732 - 200;
game.addChild(plane);
var bullets = [];
var blocks = [];
var hearts = 3;
var score = 0;
var scoreTxt = new Text2('Score: 0', {
	size: 100,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
var heartsTxt = new Text2('Hearts: 3', {
	size: 100,
	fill: "#ffffff"
});
heartsTxt.anchor.set(0.5, 0);
LK.gui.topRight.addChild(heartsTxt);
game.down = function (x, y, obj) {
	plane.x = x;
	plane.y = y;
};
game.move = function (x, y, obj) {
	plane.x = x;
	plane.y = y;
};
game.update = function () {
	if (LK.ticks % 60 === 0) {
		plane.shoot();
	}
	if (LK.ticks % 120 === 0) {
		var block = new Block();
		block.x = Math.random() * 2048;
		block.y = -50;
		game.addChild(block);
		blocks.push(block);
	}
	bullets.forEach(function (bullet) {
		blocks.forEach(function (block) {
			if (bullet.intersects(block)) {
				bullet.destroy();
				block.destroy();
				bullets.splice(bullets.indexOf(bullet), 1);
				blocks.splice(blocks.indexOf(block), 1);
				score += 10;
				scoreTxt.setText('Score: ' + score);
			}
		});
	});
	blocks.forEach(function (block) {
		if (plane.intersects(block)) {
			block.destroy();
			blocks.splice(blocks.indexOf(block), 1);
			hearts -= 1;
			heartsTxt.setText('Hearts: ' + hearts);
			if (hearts <= 0) {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			}
		}
	});
};

===================================================================
--- original.js
+++ change.js
@@ -60,14 +60,21 @@
 /**** 
 * Initialize Game
 ****/ 
 var game = new LK.Game({
-	backgroundColor: 0x000000 //Init game with black background 
+	backgroundColor: 0x000000 //Init game with black background
 });
 
 /**** 
 * Game Code
 ****/ 
+var backgroundPeople = LK.getAsset('backgroundPeople', {
+	anchorX: 0.5,
+	anchorY: 0.5,
+	x: 2048 / 2,
+	y: 2732 / 2
+});
+game.addChild(backgroundPeople);
 var plane = new Plane();
 plane.x = 2048 / 2;
 plane.y = 2732 - 200;
 game.addChild(plane);