var circlesCollide = function (o1, o2) {
	var dx = o1.x - o2.x;
	dx *= dx;
	var dy = o1.y - o2.y;
	dy *= dy;
	radii = (o1.width + o2.width) / 2;
	radii *= radii;
	if (dx + dy < radii) {
		return true;
	} else {
		return false;
	}
};
var StaticShape = Container.expand(function () {
	var self = Container.call(this);
	var shapeType = 'circle';
	var color = '#' + (Math.random() * 0xFFFFFF << 0).toString(16).padStart(6, '0');
	var shapeGraphics;
	switch (shapeType) {
		case 'circle':
			shapeGraphics = LK.getAsset('circle', 'Circle Shape', 0.5, 0.5);
			break;
		case 'triangle':
			shapeGraphics = LK.getAsset('triangle', 'Triangle Shape', 0.5, 0.5);
			break;
		case 'square':
			shapeGraphics = LK.getAsset('square', 'Square Shape', 0.5, 0.5);
			break;
	}
	self.addChild(shapeGraphics);
	self.isCollided = true;
	self.scale.set(1, 1);
	var scaleUp = function () {
		if (self.scale.x < 4) {
			self.scale.x += 0.04;
			self.scale.y += 0.04;
			LK.setTimeout(scaleUp, 2);
		} else {
			LK.setTimeout(scaleDown, 5000);
		}
	};
	var scaleDown = function () {
		if (self.scale.x > 0) {
			self.scale.x -= 0.4;
			self.scale.y -= 0.4;
			LK.setTimeout(scaleDown, 2);
		} else {
			self.destroy();
		}
	};
	LK.setTimeout(scaleUp, 33);
});
var Shape = Container.expand(function () {
	var self = Container.call(this);
	var shapeType = 'circle';
	var color = '#' + (Math.random() * 0xFFFFFF << 0).toString(16).padStart(6, '0');
	var shapeGraphics;
	switch (shapeType) {
		case 'circle':
			shapeGraphics = LK.getAsset('circle', 'Circle Shape', 0.5, 0.5);
			break;
		case 'triangle':
			shapeGraphics = LK.getAsset('triangle', 'Triangle Shape', 0.5, 0.5);
			break;
		case 'square':
			shapeGraphics = LK.getAsset('square', 'Square Shape', 0.5, 0.5);
			break;
	}
	self.addChild(shapeGraphics);
	var angle = Math.random() * Math.PI * 2;
	var speed = 5;
	self.vx = Math.cos(angle) * speed;
	self.vy = Math.sin(angle) * speed;
	self.move = function () {
		if (!self.isCollided) {
			self.x += self.vx;
			self.y += self.vy;
			if (self.x < 0 || self.x > 2048 - self.width) {
				self.vx = -self.vx;
			}
			if (self.y < 0 || self.y > 2732 - self.height) {
				self.vy = -self.vy;
			}
		} else {
			self.vx = 0;
			self.vy = 0;
			self.explode();
		}
	};
	self.explode = function () {
		self.isCollided = true;
		var scaleUp = function () {
			if (self.scale.x < 4) {
				self.scale.x += 0.04;
				self.scale.y += 0.04;
				LK.setTimeout(scaleUp, 2);
			} else {
				LK.setTimeout(scaleDown, 5000);
			}
		};
		var scaleDown = function () {
			if (self.scale.x > 0) {
				self.scale.x -= 0.4;
				self.scale.y -= 0.4;
				LK.setTimeout(scaleDown, 2);
			} else {
				self.destroy();
			}
		};
		LK.setTimeout(scaleUp, 33);
	};
	self.chain = function () {};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	var shapes = [];
	var levelText = new Text2('Level 1 - Explode 1 of 5 shapes', {
		size: 80,
		fill: "#ffffff",
		align: 'center'
	});
	levelText.anchor.set(0.5, 0);
	levelText.x = 0;
	levelText.y = 150;
	var collisionsCount = 0;
	var collisionText = new Text2('Exploded: ' + collisionsCount, {
		size: 80,
		fill: "#ffffff",
		align: 'center'
	});
	collisionText.anchor.set(0.5, 0);
	collisionText.x = 0;
	collisionText.y = 250;
	LK.gui.topCenter.addChild(levelText);
	LK.gui.topCenter.addChild(collisionText);
	for (var i = 0; i < 5; i++) {
		var shape = self.addChild(new Shape());
		shape.x = Math.random() * (1024 - shape.width);
		shape.y = Math.random() * (1366 - shape.height);
		shapes.push(shape);
	}
	var isClicked = false;
	stage.on('down', function (obj) {
		if (!isClicked) {
			isClicked = true;
			var event = obj.event;
			var pos = event.getLocalPosition(self);
			var staticShape = self.addChild(new StaticShape());
			staticShape.x = pos.x - staticShape.width / 2;
			staticShape.y = pos.y - staticShape.height / 2;
		}
	});
	LK.on('tick', function () {
		shapes.forEach(function (shape) {
			shape.move();
			self.children.forEach(function (child) {
				if (shape !== child && !shape.isCollided && child.isCollided && circlesCollide(shape, child)) {
					shape.explode();
					collisionsCount++;
					collisionText.setText('Exploded: ' + collisionsCount);
				}
			});
		});
	});
});