/****
* Classes
****/
// Define a class for bullets
var Bullet = Container.expand(function () {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('bullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 15;
  self.update = function () {
    self.y -= self.speed;
  };
});
// Assets will be automatically created and loaded by the LK engine based on their usage in the code.
// Define a class for the player character
var Player = Container.expand(function () {
  var self = Container.call(this);
  var playerGraphics = self.attachAsset('player', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 10;
  self.update = function () {
    // Player update logic
  };
});
// Define a class for zombies
var Zombie = Container.expand(function () {
  var self = Container.call(this);
  var zombieGraphics = self.attachAsset('zombie', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 2;
  self.update = function () {
    // Zombie update logic
  };
});

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

/****
* Game Code
****/
// Initialize player
var player = game.addChild(new Player());
player.x = 2048 / 2;
player.y = 2732 - 200;
// Initialize arrays for zombies and bullets
var zombies = [];
var bullets = [];
// Function to spawn a zombie
function spawnZombie() {
  var zombie = new Zombie();
  zombie.x = Math.random() * 2048;
  zombie.y = -50;
  zombies.push(zombie);
  game.addChild(zombie);
}
// Function to handle shooting
function shootBullet() {
  var bullet = new Bullet();
  bullet.x = player.x;
  bullet.y = player.y;
  bullets.push(bullet);
  game.addChild(bullet);
}
// Game update logic
game.update = function () {
  // Update player
  player.update();
  // Update zombies
  for (var i = zombies.length - 1; i >= 0; i--) {
    zombies[i].update();
    if (zombies[i].y > 2732) {
      zombies[i].destroy();
      zombies.splice(i, 1);
    }
  }
  // Update bullets
  for (var j = bullets.length - 1; j >= 0; j--) {
    bullets[j].update();
    if (bullets[j].y < 0) {
      bullets[j].destroy();
      bullets.splice(j, 1);
    }
  }
  // Check for collisions between bullets and zombies
  for (var k = bullets.length - 1; k >= 0; k--) {
    for (var l = zombies.length - 1; l >= 0; l--) {
      if (bullets[k].intersects(zombies[l])) {
        bullets[k].destroy();
        zombies[l].destroy();
        bullets.splice(k, 1);
        zombies.splice(l, 1);
        break;
      }
    }
  }
  // Spawn zombies periodically
  if (LK.ticks % 60 === 0) {
    spawnZombie();
  }
};
// Handle player movement
game.move = function (x, y, obj) {
  player.x = x;
  player.y = y;
};
// Handle shooting
game.down = function (x, y, obj) {
  shootBullet();
};