/**** 
* Classes
****/ 
// Bot class
var Bot = Container.expand(function () {
	var self = Container.call(this);
	var botGraphics = self.attachAsset('bot', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 3;
	self.update = function () {
		self.y += self.speed;
	};
});
// 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 = 10;
	self.update = function () {
		self.y -= self.speed;
	};
});
// The assets will be automatically created and loaded by the LK engine
// 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 = 5;
	self.update = function () {
		// Player movement logic goes here
	};
});

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

/**** 
* Game Code
****/ 
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 100;
// Initialize score display
var score = 0;
var scoreTxt = new Text2('Score: 0', {
	size: 100,
	fill: "#ffffff"
});
scoreTxt.anchor.set(0.5, 0);
LK.gui.top.addChild(scoreTxt);
// Initialize bots and bullets
var bots = [];
var bullets = [];
// Game update function
game.update = function () {
	// Update player
	player.update();
	// Update bots
	for (var i = 0; i < bots.length; i++) {
		bots[i].update();
	}
	// Update bullets
	for (var i = 0; i < bullets.length; i++) {
		bullets[i].update();
	}
	// Autofire bullets
	if (LK.ticks % 15 == 0) {
		// Adjust the firing rate by changing the modulus value
		var bullet = new Bullet();
		bullet.x = player.x;
		bullet.y = player.y;
		bullets.push(bullet);
		game.addChild(bullet);
	}
	// Collision detection
	for (var i = bots.length - 1; i >= 0; i--) {
		for (var j = bullets.length - 1; j >= 0; j--) {
			if (bots[i].intersects(bullets[j])) {
				bots[i].destroy();
				bullets[j].destroy();
				bots.splice(i, 1);
				bullets.splice(j, 1);
				// Update score
				score += 10;
				scoreTxt.setText('Score: ' + score);
				break;
			}
		}
	}
	// Spawn bots
	if (LK.ticks % 120 == 0) {
		var bot = new Bot();
		bot.x = Math.random() * 2048;
		bot.y = 0;
		bots.push(bot);
		game.addChild(bot);
	}
};
// Player control
game.down = function (x, y, obj) {
	player.x = x;
	player.y = y;
};
game.move = function (x, y, obj) {
	player.x = x;
	player.y = y;
};
game.up = function (x, y, obj) {
	var bullet = new Bullet();
	bullet.x = player.x;
	bullet.y = player.y;
	bullets.push(bullet);
	game.addChild(bullet);
};

===================================================================
--- original.js
+++ change.js
@@ -52,8 +52,16 @@
 // Initialize player
 var player = game.addChild(new Player());
 player.x = 2048 / 2;
 player.y = 2732 - 100;
+// Initialize score display
+var score = 0;
+var scoreTxt = new Text2('Score: 0', {
+	size: 100,
+	fill: "#ffffff"
+});
+scoreTxt.anchor.set(0.5, 0);
+LK.gui.top.addChild(scoreTxt);
 // Initialize bots and bullets
 var bots = [];
 var bullets = [];
 // Game update function
@@ -84,8 +92,11 @@
 				bots[i].destroy();
 				bullets[j].destroy();
 				bots.splice(i, 1);
 				bullets.splice(j, 1);
+				// Update score
+				score += 10;
+				scoreTxt.setText('Score: ' + score);
 				break;
 			}
 		}
 	}