/****
* Classes
****/
// Enemy class
var Enemy = Container.expand(function () {
  var self = Container.call(this);
  var enemyGraphics = self.attachAsset('enemy', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.health = 100;
  self.update = function () {
    // Update logic for enemy
  };
  self.shoot = function () {
    var bullet = new EnemyBullet();
    bullet.x = self.x;
    bullet.y = self.y;
    game.addChild(bullet);
    enemyBullets.push(bullet);
  };
});
// EnemyBullet class
var EnemyBullet = Container.expand(function () {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('enemyBullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 10;
  self.update = function () {
    self.y += self.speed;
    if (self.y > 2732) {
      self.destroy();
    }
  };
});
//<Assets used in the game will automatically appear here>
// Hero class
var Hero = Container.expand(function () {
  var self = Container.call(this);
  var heroGraphics = self.attachAsset('hero', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.health = 500;
  self.update = function () {
    // Update logic for hero
  };
  self.shoot = function () {
    var bullet = new HeroBullet();
    bullet.x = self.x;
    bullet.y = self.y;
    game.addChild(bullet);
    heroBullets.push(bullet);
  };
});
// HeroBullet class
var HeroBullet = Container.expand(function () {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('heroBullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = -10;
  self.update = function () {
    self.y += self.speed;
    if (self.y < 0) {
      self.destroy();
    }
  };
});

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

/****
* Game Code
****/
// Initialize arrays and variables
var hero;
var enemies = [];
var heroBullets = [];
var enemyBullets = [];
var score = 0;
// Create hero
hero = new Hero();
hero.x = 2048 / 2;
hero.y = 2732 - 200;
game.addChild(hero);
// Create enemies
for (var i = 0; i < 5; i++) {
  var enemy = new Enemy();
  enemy.x = (i + 1) * 300;
  enemy.y = 200;
  game.addChild(enemy);
  enemies.push(enemy);
}
// Update function
game.update = function () {
  // Update hero
  hero.update();
  // Update enemies
  for (var i = enemies.length - 1; i >= 0; i--) {
    enemies[i].update();
    if (enemies[i].health <= 0) {
      enemies[i].destroy();
      enemies.splice(i, 1);
      score += 10;
    }
  }
  // Update hero bullets
  for (var i = heroBullets.length - 1; i >= 0; i--) {
    heroBullets[i].update();
    for (var j = enemies.length - 1; j >= 0; j--) {
      if (heroBullets[i].intersects(enemies[j])) {
        enemies[j].health -= 50;
        heroBullets[i].destroy();
        heroBullets.splice(i, 1);
        break;
      }
    }
  }
  // Update enemy bullets
  for (var i = enemyBullets.length - 1; i >= 0; i--) {
    enemyBullets[i].update();
    if (enemyBullets[i].intersects(hero)) {
      hero.health -= 10;
      enemyBullets[i].destroy();
      enemyBullets.splice(i, 1);
      if (hero.health <= 0) {
        LK.showGameOver();
      }
    }
  }
  // Enemies shoot
  if (LK.ticks % 60 == 0) {
    for (var i = 0; i < enemies.length; i++) {
      enemies[i].shoot();
    }
  }
};
// Handle touch events
game.down = function (x, y, obj) {
  hero.shoot();
};
game.move = function (x, y, obj) {
  hero.x = x;
  hero.y = y;
};
game.up = function (x, y, obj) {
  // No action needed on touch up
};