/****
* Classes
****/
// Enemy class representing the creatures
var Enemy = Container.expand(function () {
  var self = Container.call(this);
  var enemyGraphics = self.attachAsset('enemy', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 5;
  self.update = function () {
    self.y += self.speed;
    if (self.y > 2732) {
      self.y = 0;
      self.x = Math.random() * 2048;
    }
  };
});
//<Assets used in the game will automatically appear here>
// Hero class representing the player character
var Hero = Container.expand(function () {
  var self = Container.call(this);
  var heroGraphics = self.attachAsset('hero', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 10;
  self.update = function () {
    // Update logic for hero
  };
});
// Bullet class for hero's weapon
var HeroBullet = Container.expand(function () {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('heroBullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -15;
  self.update = function () {
    self.y += self.speed;
  };
});

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

/****
* Game Code
****/
// Initialize hero
var hero = game.addChild(new Hero());
hero.x = 2048 / 2;
hero.y = 2732 - 150;
// Initialize enemies
var enemies = [];
for (var i = 0; i < 5; i++) {
  var enemy = new Enemy();
  enemy.x = Math.random() * 2048;
  enemy.y = Math.random() * 1000;
  enemies.push(enemy);
  game.addChild(enemy);
}
// Initialize bullets
var heroBullets = [];
// Handle game updates
game.update = function () {
  // Update hero
  hero.update();
  // Update enemies
  for (var i = 0; i < enemies.length; i++) {
    enemies[i].update();
    if (hero.intersects(enemies[i])) {
      LK.effects.flashScreen(0xff0000, 1000);
      LK.showGameOver();
    }
  }
  // Update bullets
  for (var j = heroBullets.length - 1; j >= 0; j--) {
    heroBullets[j].update();
    for (var k = enemies.length - 1; k >= 0; k--) {
      if (heroBullets[j].intersects(enemies[k])) {
        enemies[k].destroy();
        enemies.splice(k, 1);
        heroBullets[j].destroy();
        heroBullets.splice(j, 1);
        break;
      }
    }
    if (heroBullets[j] && heroBullets[j].y < -50) {
      heroBullets[j].destroy();
      heroBullets.splice(j, 1);
    }
  }
  // Fire bullets
  if (LK.ticks % 20 == 0) {
    var newBullet = new HeroBullet();
    newBullet.x = hero.x;
    newBullet.y = hero.y;
    heroBullets.push(newBullet);
    game.addChild(newBullet);
  }
};
// Handle touch events for hero movement
game.down = function (x, y, obj) {
  hero.x = x;
  hero.y = y;
};
game.move = function (x, y, obj) {
  hero.x = x;
  hero.y = y;
};
game.up = function (x, y, obj) {
  // Stop hero movement
};