var MessageDisplay = Container.expand(function () {
	var self = Container.call(this);
	var messageText = new Text2('', {
		size: 300,
		fill: '#ffffff',
		stroke: '#000000',
		strokeThickness: 8,
		anchor: {
			x: 0.5,
			y: 0
		}
	});
	self.addChild(messageText);
	messageText.y = 2732 - messageText.height - 200;
	self.showMessage = function (message) {
		messageText.setText(message);
		messageText.x = 2048 / 2 - messageText.width / 2;
		self.addChild(messageText);
		LK.setTimeout(function () {
			messageText.setText('');
		}, 2000);
	};
});
var Card = Container.expand(function () {
	var self = Container.call(this);
	self.setSuit = function (suit) {
		self.suit = suit;
		var suitAsset = self.createAsset('suit_' + suit, 'Suit Asset', 0.5, 0.5);
		suitAsset.x = 0;
		suitAsset.y = 0;
		self.addChild(suitAsset);
	};
	var cardGraphics = self.createAsset('card', 'Card Graphics', 0.5, 0.5);
	cardGraphics.anchor.set(0.5, 0.5);
	var valueText = new Text2('', {
		size: 120,
		fill: '#000000',
		font: 'bold',
		anchor: {
			x: 0,
			y: 0
		}
	});
	valueText.anchor.set(0, 0);
	valueText.x = -cardGraphics.width / 2 + 50;
	valueText.y = -cardGraphics.height / 2 + 30;
	var valueText2 = new Text2('', {
		size: 120,
		fill: '#000000',
		font: 'bold',
		anchor: {
			x: 1,
			y: 1
		}
	});
	valueText2.anchor.set(0, 0);
	valueText2.x = cardGraphics.width / 2 - 50;
	valueText2.y = cardGraphics.height / 2 - 30;
	valueText2.scale.y = -1;
	valueText2.scale.x = -1;
	self.addChild(valueText2);
	self.setValue = function (value) {
		self.value = value;
		valueText.setText(value.toString());
		valueText2.setText(value.toString());
	};
	self.addChild(valueText);
	self.addChild(valueText2);
	var suitText = new Text2('', {
		size: 120,
		fill: '#000000',
		anchor: {
			x: 0.5,
			y: 1
		}
	});
	suitText.y = 0;
	self.addChild(suitText);
	self.setValue = function (value) {
		self.value = value;
		var displayValue = value;
		if (value === 11) displayValue = 'J'; else if (value === 12) displayValue = 'Q'; else if (value === 13) displayValue = 'K'; else if (value === 1) displayValue = 'A';
		valueText.setText(displayValue.toString());
		valueText2.setText(displayValue.toString());
	};
	self.value = 0;
});
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.createAsset('player', 'Player Graphics', .5, .5);
	self.score = 0;
	self.updateScore = function (score) {
		self.score = score;
	};
});
var player = new Player();
var Game = Container.expand(function () {
	var self = Container.call(this);
	var background = self.createAsset('background', 'Background Asset', 0.5, 0.5);
	background.x = 2048 / 2;
	background.y = 2732 / 2;
	self.addChild(background);
	stage.on('up', function (obj) {
		var endY = obj.event.getLocalPosition(self).y;
		if (startY === null || endY === null) return;
		var swipeDirection = startY - endY;
		var guess = swipeDirection > 0 ? 'higher' : 'lower';
		if (deck.length === 0) {
			LK.showGameOver();
			return;
		}
		nextCard = deck.pop();
		if (!nextCard) return;
		self.addChild(nextCard);
		nextCard.x = 2048 / 2;
		nextCard.y = 2732 / 2;
		if (self.messageDisplay) {
			self.messageDisplay.destroy();
		}
		self.messageDisplay = self.addChild(new MessageDisplay());
		var correctGuess = guess === 'higher' && nextCard.value > currentCard.value || guess === 'lower' && nextCard.value < currentCard.value;
		if (correctGuess) {
			player.updateScore(player.score + 1);
			self.updateScoreDisplay(player.score);
			LK.setScore(player.score);
			self.messageDisplay.showMessage('Correct!');
		} else {
			self.messageDisplay.showMessage('Wrong!');
		}
		currentCard.destroy();
		currentCard = nextCard;
		nextCard = null;
		startY = null;
	});
	var scoreTxt = new Text2('0', {
		size: 160,
		fill: "#ffffff",
		anchor: {
			x: .5,
			y: .5
		}
	});
	scoreTxt.y = 50;
	scoreTxt.x = -340;
	LK.gui.topCenter.addChild(scoreTxt);
	self.updateScoreDisplay = function (score) {
		scoreTxt.setText('Score: ' + score.toString());
	};
	self.updateScoreDisplay(0);
	var deck = [];
	var currentCard = null;
	var nextCard = null;
	var suits = ['hearts', 'diamonds', 'clubs', 'spades'];
	for (var s = 0; s < suits.length; s++) {
		for (var i = 1; i <= 13; i++) {
			var card = new Card();
			card.setValue(i);
			card.setSuit(suits[s]);
			deck.push(card);
		}
	}
	deck.sort(function () {
		return 0.5 - Math.random();
	});
	currentCard = deck[Math.floor(Math.random() * deck.length)];
	var index = deck.indexOf(currentCard);
	deck.splice(index, 1);
	self.addChild(currentCard);
	currentCard.x = 2048 / 2;
	currentCard.y = 2732 / 2;
	var startY = null;
	stage.on('down', function (obj) {
		startY = obj.event.getLocalPosition(self).y;
	});
});

===================================================================
--- original.js
+++ change.js
@@ -95,11 +95,11 @@
 });
 var player = new Player();
 var Game = Container.expand(function () {
 	var self = Container.call(this);
-	var background = self.createAsset('background', 'Background Asset', 0, 0);
-	background.x = 0;
-	background.y = 0;
+	var background = self.createAsset('background', 'Background Asset', 0.5, 0.5);
+	background.x = 2048 / 2;
+	background.y = 2732 / 2;
 	self.addChild(background);
 	stage.on('up', function (obj) {
 		var endY = obj.event.getLocalPosition(self).y;
 		if (startY === null || endY === null) return;