/**** 
* Classes
****/
var Sparkle = Container.expand(function (color) {
	var self = Container.call(this);
	var sparkleGraphics = self.createAsset('sparkle', 'Sparkle Graphics', .5, .5);
	sparkleGraphics.tint = color;
	self.speedX = (Math.random() - 0.5) * 10;
	self.speedY = -Math.random() * 15;
	self.rotationSpeed = (Math.random() - 0.5) * 0.2;
	self.move = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.speedY += 0.3;
		self.rotation += self.rotationSpeed;
		if (self.y > 2732 + self.height / 2) {
			self.destroy();
		}
	};
});
var ExplodingOverhangPlate = Container.expand(function (width, direction, color) {
	var self = Container.call(this);
	var plateGraphics = self.createAsset('plate', 'Exploding Overhang Plate Graphics', .5, .5);
	plateGraphics.width = width;
	plateGraphics.tint = color;
	self.explode = function () {
		var explosionSpeed = 15;
		var numFragments = 10;
		var numSparkles = 5;
		for (var i = 0; i < numFragments; i++) {
			var fragment = self.createAsset('fragment', 'Fragment Graphics', .5, .5);
			fragment.width = width / numFragments / 2;
			fragment.tint = color;
			fragment.x = (i - numFragments / 2) * fragment.width * 2;
			fragment.speedX = (Math.random() - 0.5) * explosionSpeed;
			fragment.speedY = -Math.random() * explosionSpeed * 1.5;
			fragment.rotationSpeed = (Math.random() - 0.5) * 0.3;
			self.addChild(fragment);
		}
		for (var j = 0; j < numSparkles; j++) {
			var sparkleColor = j % 2 === 0 ? 0xFFFF00 : 0xFFFFFF; // Yellow or White
			var sparkle = new Sparkle(sparkleColor);
			sparkle.x = (Math.random() - 0.5) * width;
			sparkle.y = 0;
			self.addChild(sparkle);
		}
	};
	self.move = function () {
		for (var i = 0; i < self.children.length; i++) {
			var fragment = self.children[i];
			fragment.x += fragment.speedX;
			fragment.y += fragment.speedY;
			fragment.speedY += 0.5;
			fragment.rotation += fragment.rotationSpeed;
			if (fragment.y > 2732 + fragment.height / 2) {
				fragment.destroy();
			}
		}
	};
});
var OverhangPlate = Container.expand(function (width, direction, color) {
	var self = Container.call(this);
	var plateGraphics = self.createAsset('plate', 'Overhang Plate Graphics', .5, .5);
	plateGraphics.width = width;
	plateGraphics.tint = color;
	self.speedX = direction === 'right' ? 5 : -5;
	self.speedY = -20;
	self.rotationSpeed = direction === 'right' ? 0.01 : -0.01;
	self.move = function () {
		self.x += self.speedX;
		self.y += self.speedY;
		self.speedY += 0.5;
		self.speedX *= 0.99;
		self.rotation += self.rotationSpeed;
	};
});
var Plate = Container.expand(function (targetWidth) {
	var self = Container.call(this);
	var plateGraphics = self.createAsset('plate', 'Plate Graphics', .5, .5);
	plateGraphics.width = targetWidth;
	self.colorIndex = 0;
	self.hsvToRgb = function (h, s, v) {
		var r, g, b;
		var i = Math.floor(h * 6);
		var f = h * 6 - i;
		var p = v * (1 - s);
		var q = v * (1 - f * s);
		var t = v * (1 - (1 - f) * s);
		switch (i % 6) {
			case 0:
				r = v, g = t, b = p;
				break;
			case 1:
				r = q, g = v, b = p;
				break;
			case 2:
				r = p, g = v, b = t;
				break;
			case 3:
				r = p, g = q, b = v;
				break;
			case 4:
				r = t, g = p, b = v;
				break;
			case 5:
				r = v, g = p, b = q;
				break;
		}
		return (r * 255 << 16) + (g * 255 << 8) + b * 255;
	};
	self.updateColor = function () {
		var h = self.colorIndex / 32;
		var s = 1;
		var v = 1;
		self.color = self.hsvToRgb(h, s, v);
		plateGraphics.tint = self.color;
		self.colorIndex = (self.colorIndex + 1) % 32;
		var bgColor = self.hsvToRgb(h, s, v / 3);
		game.setBackgroundColor(bgColor);
	};
	self.updateColor();
	self.speed = 22.5;
	self.move = function () {
		self.x -= self.speed;
	};
	self.stack = function () {
		self.speed = 0;
	};
	self.slide = function () {
		self.x = 2048 + self.width / 2;
	};
});

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

/**** 
* Game Code
****/
var scoreTxt = new Text2('0', {
	size: 150,
	fill: '#ffffff',
	font: 'Impact'
});
scoreTxt.anchor.set(.5, 0);
LK.gui.topCenter.addChild(scoreTxt);
var plateContainer = new Container();
plateContainer.targetY = 0;
game.addChild(plateContainer);
var currentPlateWidth = 1000;
var plates = [];
var plateColorIndex = 0;
var firstPlate = new Plate(currentPlateWidth);
firstPlate.x = 2048 / 2;
firstPlate.y = 2732 - firstPlate.height / 2;
firstPlate.speed = 0;
firstPlate.colorIndex = plateColorIndex;
firstPlate.updateColor();
plates.push(firstPlate);
plateContainer.addChild(firstPlate);
var newPlate = new Plate(currentPlateWidth);
newPlate.slide();
newPlate.y = 2732 - plates.length * newPlate.height - newPlate.height / 2;
plateColorIndex++;
newPlate.colorIndex = plateColorIndex;
newPlate.updateColor();
plates.push(newPlate);
plateContainer.addChild(newPlate);
game.on('down', function (obj) {
	var topPlate = plates[plates.length - 2];
	if (newPlate.x < topPlate.x + topPlate.width && newPlate.x + newPlate.width > topPlate.x) {
		var overhang = newPlate.x + newPlate.width / 2 - (topPlate.x + topPlate.width / 2);
		var overhangSide = overhang > 0 ? 'right' : 'left';
		overhang = Math.abs(overhang);
		newPlate.stack();
		currentPlateWidth -= overhang;
		var overhangPlate = new ExplodingOverhangPlate(overhang, overhangSide, newPlate.color);
		overhangPlate.x = overhangSide === 'right' ? newPlate.x + newPlate.width / 2 : newPlate.x - newPlate.width / 2;
		overhangPlate.y = newPlate.y;
		overhangPlate.explode();
		plateContainer.addChildAt(overhangPlate, 0);
		newPlate.width -= overhang;
		if (overhangSide === 'right') {
			newPlate.x -= overhang / 2;
			overhangPlate.x -= overhang / 2;
		} else {
			newPlate.x += overhang / 2;
			overhangPlate.x += overhang / 2;
		}
		newPlate = new Plate(currentPlateWidth);
		newPlate.slide();
		newPlate.y = 2732 - plates.length * newPlate.height - newPlate.height / 2;
		plateColorIndex++;
		newPlate.colorIndex = plateColorIndex;
		newPlate.updateColor();
		plates.push(newPlate);
		plateContainer.addChild(newPlate);
		if (plates.length > 17) {
			plateContainer.targetY += newPlate.height;
		}
		scoreTxt.setText(plates.length - 2);
	} else {
		LK.showGameOver();
	}
});
LK.on('tick', function () {
	for (var i = 0; i < plateContainer.children.length; i++) {
		var plate = plateContainer.children[i];
		plate.move();
		if (plate instanceof OverhangPlate && (plate.x < -plate.width / 2 || plate.x > 2048 + plate.width / 2 || plate.y > 2732 + plate.height / 2)) {
			plate.destroy();
		}
		if (plate instanceof Plate && plate.x < -plate.width / 2) {
			LK.showGameOver();
		}
	}
	if (plateContainer.y !== plateContainer.targetY) {
		plateContainer.y += (plateContainer.targetY - plateContainer.y) * 0.1;
	}
});