/**** 
* Classes
****/ 
// Define a class for bullets
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5,
		tint: 0xFFFF00
	});
	self.speed = -30;
	self.update = function () {
		self.y += self.speed;
		if (self.y < 0) {
			self.destroy();
		}
	};
});
// Define a class for enemies
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5,
		tint: 0xFF0000
	});
	self.speed = 10;
	self.update = function () {
		self.y += self.speed;
		if (self.y > 2732) {
			self.y = 0;
			self.x = Math.random() * 2048;
		}
	};
});
// Define a class for the ground
var Ground = Container.expand(function () {
	var self = Container.call(this);
	var groundGraphics = self.attachAsset('ground', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5,
		tint: 0x008000
	});
	self.update = function () {
		// Ground update logic
	};
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Define a class for the player character
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5,
		tint: 0x0000FF
	});
	self.speed = 10;
	self.update = function () {
		// Player update logic
		self.x += self.speed;
		if (self.x > 2048) {
			self.x = 0;
		}
	};
});
// Define a class for the wall
var Wall = Container.expand(function () {
	var self = Container.call(this);
	var wallGraphics = self.attachAsset('wall', {
		anchorX: 0.5,
		anchorY: 0.5,
		scaleX: 1.5,
		scaleY: 1.5,
		tint: 0x0000FF
	});
	self.update = function () {
		// Wall update logic
	};
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x92eabd //Init game with green background
});

/**** 
* Game Code
****/ 
// Initialize player
var player = game.addChild(new Player());
player.x = 1024;
player.y = 2500;
// Initialize walls on the sides
var leftWall = game.addChild(new Wall());
leftWall.x = 0;
leftWall.y = 1366;
var rightWall = game.addChild(new Wall());
rightWall.x = 2048;
rightWall.y = 1366;
// Initialize ground
var ground = game.addChild(new Ground());
ground.x = 1024;
ground.y = 2732 - ground.height / 2;
// Initialize enemies
var enemies = [];
for (var i = 0; i < 20; i++) {
	var enemy = new Enemy();
	enemy.x = Math.random() * 2048;
	enemy.y = Math.random() * 1000;
	enemies.push(enemy);
	game.addChild(enemy);
}
// Initialize bullets
var bullets = [];
// Handle player movement
game.down = function (x, y, obj) {
	player.speed = -30;
};
// Handle shooting
game.up = function (x, y, obj) {
	player.speed = 10;
};
// Game update loop
game.update = function () {
	// Update player
	player.update();
	// Check for collision between player and the walls
	if (player.intersects(leftWall) || player.intersects(rightWall)) {
		LK.effects.flashScreen(0xff0000, 1000);
		LK.showGameOver();
	}
	// Make the screen follow the player
	game.x = -player.x + 1024;
	game.y = -player.y + 1366;
	// Update enemies
	for (var i = 0; i < enemies.length; i++) {
		enemies[i].update();
		if (player.intersects(enemies[i])) {
			LK.effects.flashScreen(0xff0000, 1000);
			LK.showGameOver();
		}
	}
	// Update bullets
	for (var j = bullets.length - 1; j >= 0; j--) {
		bullets[j].update();
		for (var k = enemies.length - 1; k >= 0; k--) {
			if (bullets[j].intersects(enemies[k])) {
				bullets[j].destroy();
				bullets.splice(j, 1);
				enemies[k].destroy();
				enemies.splice(k, 1);
				break;
			}
		}
	}
};

===================================================================
--- original.js
+++ change.js
@@ -101,12 +101,15 @@
 // Initialize player
 var player = game.addChild(new Player());
 player.x = 1024;
 player.y = 2500;
-// Initialize wall
-var wall = game.addChild(new Wall());
-wall.x = 1024;
-wall.y = 1500;
+// Initialize walls on the sides
+var leftWall = game.addChild(new Wall());
+leftWall.x = 0;
+leftWall.y = 1366;
+var rightWall = game.addChild(new Wall());
+rightWall.x = 2048;
+rightWall.y = 1366;
 // Initialize ground
 var ground = game.addChild(new Ground());
 ground.x = 1024;
 ground.y = 2732 - ground.height / 2;
@@ -132,10 +135,10 @@
 // Game update loop
 game.update = function () {
 	// Update player
 	player.update();
-	// Check for collision between player and wall
-	if (player.intersects(wall)) {
+	// Check for collision between player and the walls
+	if (player.intersects(leftWall) || player.intersects(rightWall)) {
 		LK.effects.flashScreen(0xff0000, 1000);
 		LK.showGameOver();
 	}
 	// Make the screen follow the player