/**** 
* Classes
****/ 
// Bullet class
var Bullet = Container.expand(function () {
	var self = Container.call(this);
	var bulletGraphics = self.attachAsset('bullet', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = -10;
	self.update = function () {
		self.y += self.speed;
	};
});
// Enemy class
var Enemy = Container.expand(function () {
	var self = Container.call(this);
	var enemyGraphics = self.attachAsset('enemy', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 2;
	self.update = function () {
		// Enemy movement logic goes here
	};
});
// The assets will be automatically created and loaded by the LK engine
// Player class
var Player = Container.expand(function () {
	var self = Container.call(this);
	var playerGraphics = self.attachAsset('player', {
		anchorX: 0.5,
		anchorY: 0.5
	});
	self.speed = 5;
	self.update = function () {
		// Player movement logic goes here
	};
});

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

/**** 
* Game Code
****/ 
// Initialize player, bullets and enemies
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 100;
var bullets = [];
var enemies = [];
// Game update function
game.update = function () {
	// Player movement logic has been removed as it was causing errors and is not suitable for a touch screen game
	// Shooting logic has been removed as it was causing errors and is not suitable for a touch screen game
	// Enemy spawning logic
	if (LK.ticks % 120 == 0) {
		var enemy = new Enemy();
		enemy.x = Math.random() * 2048;
		enemy.y = 0;
		enemies.push(enemy);
		game.addChild(enemy);
	}
	// Bullet and enemy update logic
	for (var i = bullets.length - 1; i >= 0; i--) {
		bullets[i].update();
		if (bullets[i].y < 0) {
			game.removeChild(bullets[i]);
			bullets.splice(i, 1);
		}
	}
	for (var i = enemies.length - 1; i >= 0; i--) {
		enemies[i].update();
		if (enemies[i].y > 2732) {
			game.removeChild(enemies[i]);
			enemies.splice(i, 1);
		}
	}
	// Collision detection
	for (var i = bullets.length - 1; i >= 0; i--) {
		for (var j = enemies.length - 1; j >= 0; j--) {
			if (bullets[i].intersects(enemies[j])) {
				game.removeChild(bullets[i]);
				bullets.splice(i, 1);
				game.removeChild(enemies[j]);
				enemies.splice(j, 1);
				break;
			}
		}
	}
};