/**** 
* Classes
****/ 
var Barrel = Container.expand(function () {
	var self = Container.call(this);
	var barrelGraphics = self.attachAsset('barrel', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	barrelGraphics.tint = Math.random() * 0xFFFFFF;
	while (barrelGraphics.tint < 0x0A0A0A) {
		barrelGraphics.tint = Math.random() * 0xFFFFFF;
	}
	self.speed = 5;
	self._move_migrated = function () {
		self.y += self.speed;
	};
});
var Button = Container.expand(function () {
	var self = Container.call(this);
	var buttonGraphics = self.attachAsset('button', {
		anchorX: 0.5,
		anchorY: 0.5
	});
});
var Lane = Container.expand(function () {
	var self = Container.call(this);
	var laneGraphics = self.attachAsset('lane', {});
	laneGraphics.height = 2732;
	laneGraphics.width = 2;
	laneGraphics.tint = 0xFFFFFF;
	self.addChild(laneGraphics);
});
var LifeIndicator = Container.expand(function () {
	var self = Container.call(this);
	self.lives = 3;
	self.indicators = [];
	for (var i = 0; i < self.lives; i++) {
		var lifeBarrel = self.attachAsset('barrel', {
			anchorX: 0.5,
			anchorY: 0.5
		});
		lifeBarrel.scale.set(0.5);
		lifeBarrel.x = i * (lifeBarrel.width + 10);
		self.indicators.push(lifeBarrel);
		self.addChild(lifeBarrel);
	}
	self.updateLives = function (lives) {
		self.lives = lives;
		for (var i = 0; i < self.indicators.length; i++) {
			self.indicators[i].visible = i < self.lives;
		}
	};
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.lives = 3;
	self.moveLeft = function (laneWidth) {
		self.x = Math.max(laneWidth / 2, Math.floor((self.x - laneWidth) / laneWidth) * laneWidth + laneWidth / 2);
	};
	self.moveRight = function (laneWidth) {
		self.x = Math.min(2048 - laneWidth / 2, Math.ceil((self.x + laneWidth) / laneWidth) * laneWidth - laneWidth / 2);
	};
});

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

/**** 
* Game Code
****/ 
var startTime = Date.now();
game.speedMultiplier = 1.0;
game.setBackgroundColor(0x000000);
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 200;
var lifeIndicator = game.addChild(new LifeIndicator());
lifeIndicator.x = 2048 - 300;
lifeIndicator.y = 50;
var leftButton = game.addChild(new Button());
leftButton.x = 100;
leftButton.y = 2732 - 200;
var rightButton = game.addChild(new Button());
rightButton.x = 2048 - 100;
rightButton.y = 2732 - 200;
var carsPassedTxt = new Text2('0', {
	size: 150,
	fill: '#ffffff'
});
LK.gui.topLeft.addChild(carsPassedTxt);
var laneWidth = 2048 / 6;
for (var i = 1; i < 6; i++) {
	var lane = new Lane();
	lane.x = i * laneWidth;
	game.addChild(lane);
}
var barrels = [];
var carsPassed = 0;
LK.on('tick', function () {
	if (LK.ticks % (60 * 5) === 0) {
		game.speedMultiplier *= 1.1;
	}
	for (var a = barrels.length - 1; a >= 0; a--) {
		barrels[a]._move_migrated();
		if (barrels[a].y > 2732) {
			barrels[a].destroy();
			barrels.splice(a, 1);
			carsPassed++;
		}
	}
	var currentTime = Date.now();
	var timeElapsed = (currentTime - startTime) / 1000;
	var spawnRate = timeElapsed > 20 ? Math.pow(1.10, Math.floor((timeElapsed - 20) / 5)) : 1;
	if (LK.ticks % Math.floor(60 / spawnRate) == 0) {
		var newBarrel = new Barrel();
		var laneWidth = 2048 / 6;
		newBarrel.x = Math.floor(Math.random() * 6) * laneWidth + laneWidth / 2;
		newBarrel.y = 0;
		newBarrel.speed *= game.speedMultiplier;
		barrels.push(newBarrel);
		game.addChild(newBarrel);
	}
	carsPassedTxt.setText(carsPassed);
	for (var i = 0; i < barrels.length; i++) {
		if (player.intersects(barrels[i])) {
			player.lives--;
			lifeIndicator.updateLives(player.lives);
			if (player.lives <= 0) {
				LK.effects.flashScreen(0xff0000, 1000);
				LK.showGameOver();
			} else {
				barrels[i].destroy();
				barrels.splice(i, 1);
			}
		}
	}
});
leftButton.on('down', function (x, y, obj) {
	player.moveLeft(laneWidth);
});
rightButton.on('down', function (x, y, obj) {
	player.moveRight(laneWidth);
});

===================================================================
--- original.js
+++ change.js
@@ -122,13 +122,13 @@
 	var spawnRate = timeElapsed > 20 ? Math.pow(1.10, Math.floor((timeElapsed - 20) / 5)) : 1;
 	if (LK.ticks % Math.floor(60 / spawnRate) == 0) {
 		var newBarrel = new Barrel();
 		var laneWidth = 2048 / 6;
-		newCar.x = Math.floor(Math.random() * 6) * laneWidth + laneWidth / 2;
-		newCar.y = 0;
-		newCar.speed *= game.speedMultiplier;
-		cars.push(newCar);
-		game.addChild(newCar);
+		newBarrel.x = Math.floor(Math.random() * 6) * laneWidth + laneWidth / 2;
+		newBarrel.y = 0;
+		newBarrel.speed *= game.speedMultiplier;
+		barrels.push(newBarrel);
+		game.addChild(newBarrel);
 	}
 	carsPassedTxt.setText(carsPassed);
 	for (var i = 0; i < barrels.length; i++) {
 		if (player.intersects(barrels[i])) {