/****
* 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 = 5;
  self.move = 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.update = function () {
    // Enemy update logic here
  };
});
// Assets will be automatically generated based on usage in the code.
// Hero class
var Hero = Container.expand(function () {
  var self = Container.call(this);
  var heroGraphics = self.attachAsset('hero', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.update = function () {
    // Hero update logic here
  };
  self.shoot = function () {
    // Hero shooting logic here
  };
});

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

/****
* Game Code
****/
var hero = game.addChild(new Hero());
hero.x = 1024; // Center horizontally
hero.y = 2500; // Position towards the bottom
var enemies = [];
var bullets = [];
// Create an enemy every few seconds
var enemySpawnTimer = LK.setInterval(function () {
  var enemy = new Enemy();
  enemy.x = Math.random() * 2048; // Random horizontal position
  enemy.y = 100; // Start from the top
  enemies.push(enemy);
  game.addChild(enemy);
}, 2000);
// Game tick event
LK.on('tick', function () {
  // Update hero
  hero.update();
  // Move and check bullets
  for (var i = bullets.length - 1; i >= 0; i--) {
    bullets[i].move();
    // Check for collision with enemies
    for (var j = enemies.length - 1; j >= 0; j--) {
      if (bullets[i].intersects(enemies[j])) {
        // Destroy enemy and bullet
        enemies[j].destroy();
        bullets[i].destroy();
        enemies.splice(j, 1);
        bullets.splice(i, 1);
        break; // Exit inner loop
      }
    }
  }
  // Update enemies
  for (var k = 0; k < enemies.length; k++) {
    enemies[k].update();
  }
});
// Touch event to control hero and shoot bullets
game.on('down', function (obj) {
  var pos = obj.event.getLocalPosition(game);
  hero.x = pos.x;
  // Shoot a bullet
  var bullet = new Bullet();
  bullet.x = hero.x;
  bullet.y = hero.y;
  bullets.push(bullet);
  game.addChild(bullet);
});