var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.createAsset('bullet', 'Bullet Graphics', .5, .5);
	self.speed = 20;
	self.move = function () {
		self.x += self.speed * Math.cos(self.angle);
		self.y += self.speed * Math.sin(self.angle);
		self.rotation += 0.1;
	};
});
var Enemy = Container.expand(function (hero) {
	var self = Container.call(this);
	var enemyGraphics = self.createAsset('enemy', 'Enemy character', .5, .5);
	self.move = function () {
		var dx = hero.x - self.x;
		var dy = hero.y - self.y;
		var distance = Math.sqrt(dx * dx + dy * dy);
		self.x += dx / distance * 1.8;
		self.y += dy / distance * 1.8;
	};
});
var Hero = Container.expand(function () {
	var self = Container.call(this);
	var heroGraphics = self.createAsset('hero', 'Hero character', .5, .5);
	self.move = function () {
		if (self.targetPos) {
			var dx = self.targetPos.x - self.x;
			var dy = self.targetPos.y - self.y;
			var distance = Math.sqrt(dx * dx + dy * dy);
			if (distance > 5) {
				self.x += dx / distance * 10;
				self.y += dy / distance * 10;
			} else {
				self.x = self.targetPos.x;
				self.y = self.targetPos.y;
				self.targetPos = null;
			}
		}
	};
});
var Game = Container.expand(function () {
	var self = Container.call(this);
	LK.stageContainer.setBackgroundColor(0x008000);
	var hero = self.addChild(new Hero());
	hero.enemies = [];
	var heroBullets = [];
	var enemyBullets = [];
	hero.x = 2048 / 2;
	hero.y = 2732 / 2;
	self.targetPos = null;
	stage.on('down', function (obj) {
		hero.targetPos = obj.event.getLocalPosition(self);
	});
	var spawnEnemy = function () {
		var side = Math.floor(Math.random() * 4);
		var enemy = new Enemy(hero);
		switch (side) {
			case 0:
				enemy.x = Math.random() * 2048;
				enemy.y = 0;
				break;
			case 1:
				enemy.x = 2048;
				enemy.y = Math.random() * 2732;
				break;
			case 2:
				enemy.x = Math.random() * 2048;
				enemy.y = 2732;
				break;
			case 3:
				enemy.x = 0;
				enemy.y = Math.random() * 2732;
				break;
		}
		hero.enemies.push(enemy);
		self.addChild(enemy);
	};
	LK.on('tick', function () {
		hero.move();
		for (var i = 0; i < heroBullets.length; i++) {
			heroBullets[i].move();
		}
		for (var i = 0; i < enemyBullets.length; i++) {
			enemyBullets[i].move();
		}
		for (var i = 0; i < hero.enemies.length; i++) {
			hero.enemies[i].move();
			for (var j = 0; j < heroBullets.length; j++) {
				if (heroBullets[j].intersects(hero.enemies[i])) {
					heroBullets[j].destroy();
					heroBullets.splice(j, 1);
					hero.enemies[i].destroy();
					hero.enemies.splice(i, 1);
					i--;
					j--;
				}
			}
			if (hero.intersects(hero.enemies[i])) {
				LK.showGameOver();
			}
		}
		if (LK.ticks % 30 === 0) {
			spawnEnemy();
		}
		if (LK.ticks % 20 === 0 && hero.targetPos) {
			var bullet = new Bullet();
			bullet.x = hero.x;
			bullet.y = hero.y;
			var dx = hero.targetPos.x - hero.x;
			var dy = hero.targetPos.y - hero.y;
			bullet.angle = Math.atan2(dy, dx);
			heroBullets.push(bullet);
			self.addChild(bullet);
		}
	});
});