/****
* Classes
****/
// Class for the Bullet
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 () {
    // Bullet movement logic goes here
  };
});
// Class for the Enemy
var Enemy = Container.expand(function () {
  var self = Container.call(this);
  var enemyGraphics = self.attachAsset('enemy', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 3;
  self.update = function () {
    // Enemy movement logic goes here
  };
});
// The assets will be automatically loaded by the LK engine
// Class for the Player
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, enemies and bullets
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 / 2;
var enemies = [];
for (var i = 0; i < 10; i++) {
  var enemy = game.addChild(new Enemy());
  enemy.x = Math.random() * 2048;
  enemy.y = Math.random() * 2732;
  enemies.push(enemy);
}
var bullets = [];
// Game update function
game.update = function () {
  // Update player, enemies and bullets
  player.update();
  for (var i = 0; i < enemies.length; i++) {
    enemies[i].update();
  }
  for (var i = 0; i < bullets.length; i++) {
    bullets[i].update();
  }
  // Collision detection
  for (var i = 0; i < enemies.length; i++) {
    if (player.intersects(enemies[i])) {
      // Player hit by enemy
      LK.showGameOver();
      return;
    }
    for (var j = 0; j < bullets.length; j++) {
      if (bullets[j].intersects(enemies[i])) {
        // Enemy hit by bullet
        enemies[i].destroy();
        enemies.splice(i, 1);
        bullets[j].destroy();
        bullets.splice(j, 1);
        break;
      }
    }
  }
};
// Game input handling
game.down = function (x, y, obj) {
  // Fire bullet
  var bullet = game.addChild(new Bullet());
  bullet.x = player.x;
  bullet.y = player.y;
  bullets.push(bullet);
};