var Ball = Container.expand(function () {
	var self = Container.call(this);
	var ballGraphics = XS.getAsset('ball', 'Basketball', .5, .5);
	self.addChild(ballGraphics);
	self.speed = {
		x: 0,
		y: 0
	};
	self.move = function () {
		self.speed.y += 3.2;
		self.x += self.speed.x;
		self.y += self.speed.y;
	};
	self.bounceOffPoint = function (x, y, elasticity) {
		var dx = self.x - x;
		var dy = self.y - y;
		var angle = Math.atan2(dy, dx);
		self.speed.x = Math.cos(angle) * elasticity;
		self.speed.y = Math.sin(angle) * elasticity;
	};
	self.angleTo = function (x, y) {
		var dx = self.x - x;
		var dy = self.y - y;
		return Math.atan2(dy, dx);
	};
	self.distanceTo = function (x, y) {
		var dx = self.x - x;
		var dy = self.y - y;
		return Math.sqrt(dx * dx + dy * dy);
	};
	self.moveToDistance = function (x, y, distance) {
		var angle = self.angleTo(x, y);
		self.x = x + Math.cos(angle) * distance;
		self.y = y + Math.sin(angle) * distance;
	};
});
var Hoop = Container.expand(function () {
	var self = Container.call(this);
	self.moveTo = function (newX, newY) {
		var dx = (newX - self.x) / 60;
		var dy = (newY - self.y) / 60;
		var steps = 0;
		var interval = XS.setInterval(function () {
			self.x += dx;
			self.y += dy;
			steps++;
			if (steps >= 60) {
				XS.clearInterval(interval);
			}
		});
	};
	var backboardGraphics = XS.getAsset('backboard', 'Basketball Backboard', .5, .5);
	backboardGraphics.y -= 250;
	var hoopRimGraphics = XS.getAsset('hoopRim', 'Basketball Hoop Rim', .5, .5);
	var leftElementGraphics = XS.getAsset('leftElement', 'Left Side Element', .5, .5);
	var rightElementGraphics = XS.getAsset('rightElement', 'Right Side Element', .5, .5);
	self.addChild(backboardGraphics);
	hoopRimGraphics.y = backboardGraphics.height / 2 - 550 + 20 + 120;
	self.addChild(hoopRimGraphics);
	leftElementGraphics.x = hoopRimGraphics.x - hoopRimGraphics.width / 2 + leftElementGraphics.width / 2;
	leftElementGraphics.y = hoopRimGraphics.y - 100;
	rightElementGraphics.x = hoopRimGraphics.x + hoopRimGraphics.width / 2 - rightElementGraphics.width / 2;
	rightElementGraphics.y = hoopRimGraphics.y - 100;
	self.addChild(leftElementGraphics);
	self.addChild(rightElementGraphics);
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var bg = XS.getAsset('background', 'Background Image', 0.5, 0.5);
	bg.x = 2048 / 2;
	bg.y = 2732 / 2 + 150;
	bg.alpha = 0.7;
	self.addChild(bg);
	var hoop = self.addChild(new Hoop());
	var score = 0;
	var scoreTxt = new Text2(score.toString(), {
		size: 150,
		fill: '#ffffff'
	});
	scoreTxt.anchor.set(.5, 0);
	XS.gui.topCenter.addChild(scoreTxt);
	var ball = self.addChild(new Ball());
	ball.hasScored = false;
	ball.hasThrown = false;
	hoop.x = 2048 / 2;
	hoop.y = 2732 / 2;
	ball.x = 2048 / 2;
	ball.y = 2732 - ball.height;
	ball.on('down', function (obj) {
		var event = obj.event;
		dragStart = event.getLocalPosition(self);
	});
	var dragStart = null;
	stage.on('move', function (obj) {
		var event = obj.event;
		var pos = event.getLocalPosition(self);
		if (dragStart !== null && ball.distanceTo(pos.x, pos.y) > 200) {
			self.fireBall(obj);
		}
	});
	self.fireBall = function (obj) {
		if (dragStart !== null) {
			var event = obj.event;
			var pos = event.getLocalPosition(self);
			var dx = pos.x - dragStart.x;
			var dy = pos.y - dragStart.y;
			var angle = Math.atan2(dy, dx);
			ball.speed.x = Math.cos(angle) * 72 * 1.76 * 0.9 / 2;
			ball.speed.y = Math.sin(angle) * 72 * 1.76 * 0.9;
			ball.hasThrown = true;
			dragStart = null;
		}
	};
	stage.on('up', function (obj) {
		self.fireBall(obj);
	});
	var floorY = 2732 - 100;
	XS.on('tick', function () {
		ball.move();
		if (ball.y + ball.height > floorY) {
			ball.y = floorY - ball.height;
			ball.speed.y *= -0.75;
			if (ball.hasThrown && !ball.hasScored) {
				XS.showGameOver();
			}
			if (ball.hasScored) {
				ball.x = 2048 / 2;
				ball.y = 2732 - ball.height;
				ball.speed.x = 0;
				ball.speed.y = 0;
				ball.hasThrown = false;
				ball.hasScored = false;
				hoop.moveTo(Math.random() * (2048 - 1000) + 500, Math.random() * (2732 - 2000) + 1000);
			}
		}
		if (ball.intersects(hoop.children[1]) && ball.speed.y > 0 && !ball.hasScored && ball.x > hoop.x + hoop.children[2].x && ball.x < hoop.x + hoop.children[3].x) {
			ball.hasScored = true;
			score++;
			scoreTxt.setText(score.toString());
		}
		if (ball.speed.y > 0) {
			if (ball.distanceTo(hoop.x + hoop.children[2].x, hoop.y + hoop.children[2].y) < ball.width / 2 + hoop.children[2].width / 2) {
				ball.bounceOffPoint(hoop.x + hoop.children[2].x, hoop.y + hoop.children[2].y, 0.75);
			}
			if (ball.distanceTo(hoop.x + hoop.children[3].x, hoop.y + hoop.children[3].y) < ball.width / 2 + hoop.children[3].width / 2) {
				ball.bounceOffPoint(hoop.x + hoop.children[3].x, hoop.y + hoop.children[3].y, 0.75);
			}
		}
	});
});