/**** 
* Plugins
****/ 
var storage = LK.import("@upit/storage.v1", {
	level: 1,
	xp: 0,
	kibble: 50,
	lastPetTime: 0,
	lastLitterTime: 0,
	ownedItems: []
});
var tween = LK.import("@upit/tween.v1");

/**** 
* Classes
****/ 
var Cat = Container.expand(function () {
	var self = Container.call(this);
	var catSprite = self.attachAsset('cat', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.accessories = [];
	self.addAccessory = function (itemType) {
		var accessory = self.addChild(LK.getAsset(itemType, {
			anchorX: 0.5,
			anchorY: 0.5
		}));
		if (itemType === 'pinkHeadband' || itemType === 'blueHeadband') {
			accessory.y = -120;
		} else {
			accessory.x = Math.random() * 100 - 50;
			accessory.y = Math.random() * 100 - 50;
		}
		self.accessories.push(accessory);
	};
	self.animate = function () {
		tween(catSprite, {
			scaleX: 1.1,
			scaleY: 1.1
		}, {
			duration: 300,
			easing: tween.easeInOut,
			onFinish: function onFinish() {
				tween(catSprite, {
					scaleX: 1,
					scaleY: 1
				}, {
					duration: 300,
					easing: tween.easeInOut
				});
			}
		});
	};
	return self;
});
var GameButton = Container.expand(function (assetId, text, x, y) {
	var self = Container.call(this);
	var buttonSprite = self.attachAsset(assetId, {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var buttonText = new Text2(text, {
		size: 40,
		fill: 0xFFFFFF
	});
	buttonText.anchor.set(0.5, 0.5);
	self.addChild(buttonText);
	self.x = x;
	self.y = y;
	self.down = function () {
		buttonSprite.alpha = 0.7;
	};
	self.up = function () {
		buttonSprite.alpha = 1.0;
	};
	return self;
});
var Shop = Container.expand(function () {
	var self = Container.call(this);
	var panel = self.attachAsset('shopPanel', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	var titleText = new Text2('Shop', {
		size: 60,
		fill: 0x333333
	});
	titleText.anchor.set(0.5, 0.5);
	titleText.y = -500;
	self.addChild(titleText);
	var closeBtn = self.addChild(new GameButton('closeButton', 'Close', 700, -500));
	var items = [{
		name: 'Dog Plushie',
		asset: 'dogPlushie',
		price: 10,
		id: 'dogPlushie'
	}, {
		name: 'Plastic Fish',
		asset: 'plasticFish',
		price: 20,
		id: 'plasticFish'
	}, {
		name: 'Pink Headband',
		asset: 'pinkHeadband',
		price: 30,
		id: 'pinkHeadband'
	}, {
		name: 'Blue Headband',
		asset: 'blueHeadband',
		price: 30,
		id: 'blueHeadband'
	}, {
		name: 'Mouse Toy',
		asset: 'mouseToy',
		price: 40,
		id: 'mouseToy'
	}];
	self.itemButtons = [];
	for (var i = 0; i < items.length; i++) {
		var item = items[i];
		var yPos = -200 + i * 150;
		var itemSprite = self.addChild(LK.getAsset(item.asset, {
			anchorX: 0.5,
			anchorY: 0.5,
			x: -300,
			y: yPos
		}));
		var nameText = new Text2(item.name, {
			size: 40,
			fill: 0x333333
		});
		nameText.anchor.set(0, 0.5);
		nameText.x = -200;
		nameText.y = yPos;
		self.addChild(nameText);
		var priceText = new Text2(item.price + ' kibble', {
			size: 35,
			fill: 0x666666
		});
		priceText.anchor.set(0, 0.5);
		priceText.x = -200;
		priceText.y = yPos + 40;
		self.addChild(priceText);
		var buyBtn = self.addChild(new GameButton('buyButton', 'Buy', 400, yPos));
		buyBtn.itemId = item.id;
		buyBtn.price = item.price;
		self.itemButtons.push(buyBtn);
	}
	closeBtn.up = function () {
		closeBtn.parent.parent.alpha = 0.7;
		self.visible = false;
	};
	self.visible = false;
	return self;
});

/**** 
* Initialize Game
****/ 
var game = new LK.Game({
	backgroundColor: 0x87CEEB
});

/**** 
* Game Code
****/ 
var currentLevel = storage.level;
var currentXP = storage.xp;
var currentKibble = storage.kibble;
var lastPetTime = storage.lastPetTime;
var lastLitterTime = storage.lastLitterTime;
var ownedItems = storage.ownedItems || [];
var xpRequired = 100 * Math.pow(2, currentLevel - 1);
var cat = game.addChild(new Cat());
cat.x = 1024;
cat.y = 800;
// Add owned accessories to cat
for (var i = 0; i < ownedItems.length; i++) {
	cat.addAccessory(ownedItems[i]);
}
// UI Elements
var levelText = new Text2('Level: ' + currentLevel, {
	size: 50,
	fill: 0x333333
});
levelText.anchor.set(0, 0);
levelText.x = 120;
levelText.y = 150;
LK.gui.topLeft.addChild(levelText);
var xpText = new Text2('XP: ' + currentXP + '/' + xpRequired, {
	size: 40,
	fill: 0x333333
});
xpText.anchor.set(0, 0);
xpText.x = 120;
xpText.y = 220;
LK.gui.topLeft.addChild(xpText);
var kibbleText = new Text2('Kibble: ' + currentKibble, {
	size: 45,
	fill: 0x333333
});
kibbleText.anchor.set(1, 0);
LK.gui.topRight.addChild(kibbleText);
// Action Buttons
var feedBtn = game.addChild(new GameButton('feedButton', 'Feed (10)', 300, 2200));
var petBtn = game.addChild(new GameButton('petButton', 'Pet', 600, 2200));
var sleepBtn = game.addChild(new GameButton('sleepButton', 'Sleep (30)', 900, 2200));
var litterBtn = game.addChild(new GameButton('litterButton', 'Clean (14)', 1200, 2200));
var shopBtn = game.addChild(new GameButton('shopButton', 'Shop', 1500, 2200));
// Shop
var shop = game.addChild(new Shop());
shop.x = 1024;
shop.y = 1366;
// Pet cooldown indicator
var petCooldownText = new Text2('', {
	size: 30,
	fill: 0xFF0000
});
petCooldownText.anchor.set(0.5, 0);
petCooldownText.x = 600;
petCooldownText.y = 2280;
game.addChild(petCooldownText);
// Litter box indicator
var litterIndicator = new Text2('', {
	size: 30,
	fill: 0xFF0000
});
litterIndicator.anchor.set(0.5, 0);
litterIndicator.x = 1200;
litterIndicator.y = 2280;
game.addChild(litterIndicator);
function updateUI() {
	levelText.setText('Level: ' + currentLevel);
	xpText.setText('XP: ' + currentXP + '/' + xpRequired);
	kibbleText.setText('Kibble: ' + currentKibble);
	storage.level = currentLevel;
	storage.xp = currentXP;
	storage.kibble = currentKibble;
	storage.lastPetTime = lastPetTime;
	storage.lastLitterTime = lastLitterTime;
	storage.ownedItems = ownedItems;
}
function gainXP(amount) {
	currentXP += amount;
	if (currentXP >= xpRequired) {
		currentLevel++;
		currentXP -= xpRequired;
		xpRequired = 100 * Math.pow(2, currentLevel - 1);
		if (currentLevel >= 150) {
			LK.setTimeout(function () {
				// Reset everything
				storage.level = 1;
				storage.xp = 0;
				storage.kibble = 50;
				storage.lastPetTime = 0;
				storage.lastLitterTime = 0;
				storage.ownedItems = [];
				LK.showGameOver();
			}, 2000);
		}
		LK.effects.flashScreen(0xFFD700, 1000);
	}
	updateUI();
	// Start background music
	LK.playMusic('backgroundMusic', {
		loop: true
	});
}
// Button handlers
feedBtn.up = function () {
	feedBtn.parent.parent.alpha = 0.7;
	if (currentKibble >= 10) {
		currentKibble -= 10;
		gainXP(5);
		cat.animate();
		LK.getSound('meow').play();
	}
};
petBtn.up = function () {
	petBtn.parent.parent.alpha = 0.7;
	var currentTime = Date.now();
	if (currentTime - lastPetTime >= 60000) {
		currentKibble += 3;
		lastPetTime = currentTime;
		cat.animate();
		LK.getSound('purr').play();
		updateUI();
	}
};
sleepBtn.up = function () {
	sleepBtn.parent.parent.alpha = 0.7;
	if (currentKibble >= 30) {
		currentKibble -= 30;
		gainXP(15);
		cat.animate();
		tween(cat, {
			alpha: 0.5
		}, {
			duration: 1000,
			onFinish: function onFinish() {
				tween(cat, {
					alpha: 1
				}, {
					duration: 1000
				});
			}
		});
	}
};
litterBtn.up = function () {
	litterBtn.parent.parent.alpha = 0.7;
	if (currentKibble >= 14) {
		currentKibble -= 14;
		lastLitterTime = Date.now();
		updateUI();
	}
};
shopBtn.up = function () {
	shopBtn.parent.parent.alpha = 0.7;
	shop.visible = true;
};
// Shop buy handlers
for (var i = 0; i < shop.itemButtons.length; i++) {
	var btn = shop.itemButtons[i];
	btn.up = function () {
		this.parent.parent.alpha = 0.7;
		if (currentKibble >= this.price && ownedItems.indexOf(this.itemId) === -1) {
			currentKibble -= this.price;
			ownedItems.push(this.itemId);
			cat.addAccessory(this.itemId);
			LK.getSound('purchase').play();
			updateUI();
		}
	};
}
game.update = function () {
	var currentTime = Date.now();
	// Pet cooldown
	var petCooldown = 60000 - (currentTime - lastPetTime);
	if (petCooldown > 0) {
		petCooldownText.setText('Pet: ' + Math.ceil(petCooldown / 1000) + 's');
	} else {
		petCooldownText.setText('');
	}
	// Litter box timer
	var litterTime = currentTime - lastLitterTime;
	if (litterTime >= 180000) {
		litterIndicator.setText('Clean needed!');
	} else {
		var remainingTime = 180000 - litterTime;
		litterIndicator.setText('Clean in: ' + Math.ceil(remainingTime / 1000) + 's');
	}
};
updateUI();

===================================================================
--- original.js
+++ change.js
@@ -262,9 +262,11 @@
 		LK.effects.flashScreen(0xFFD700, 1000);
 	}
 	updateUI();
 	// Start background music
-	LK.playMusic('backgroundMusic');
+	LK.playMusic('backgroundMusic', {
+		loop: true
+	});
 }
 // Button handlers
 feedBtn.up = function () {
 	feedBtn.parent.parent.alpha = 0.7;