/****
* Classes
****/
// Bullet class for projectiles fired by towers
var Bullet = Container.expand(function (startX, startY, target) {
  var self = Container.call(this);
  var bulletGraphics = self.attachAsset('bullet', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 10;
  self.target = target;
  self.x = startX;
  self.y = startY;
  self.update = function () {
    var dx = self.target.x - self.x;
    var dy = self.target.y - self.y;
    var distance = Math.sqrt(dx * dx + dy * dy);
    if (distance < 10) {
      self.target.hit();
      self.destroy();
    } else {
      self.x += dx / distance * self.speed;
      self.y += dy / distance * self.speed;
    }
  };
});
// Enemy class for the creatures attacking the realm
var Enemy = Container.expand(function () {
  var self = Container.call(this);
  var enemyGraphics = self.attachAsset('enemy', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.speed = 2;
  self.health = 100;
  self.update = function () {
    self.x -= self.speed;
    if (self.x < 0) {
      // Enemy reached the end, game over logic
      LK.showGameOver();
    }
  };
  self.hit = function () {
    self.health -= 50;
    if (self.health <= 0) {
      self.destroy();
      enemies.splice(enemies.indexOf(self), 1);
    }
  };
});
//<Assets used in the game will automatically appear here>
//<Write imports for supported plugins here>
// Tower class to represent defense towers
var Tower = Container.expand(function () {
  var self = Container.call(this);
  var towerGraphics = self.attachAsset('tower', {
    anchorX: 0.5,
    anchorY: 0.5
  });
  self.range = 300;
  self.fireRate = 60; // Fire every 60 frames
  self.fireCooldown = 0;
  self.update = function () {
    if (self.fireCooldown > 0) {
      self.fireCooldown--;
    }
  };
  self.canFire = function () {
    return self.fireCooldown === 0;
  };
  self.fire = function (target) {
    if (self.canFire()) {
      var bullet = new Bullet(self.x, self.y, target);
      game.addChild(bullet);
      bullets.push(bullet);
      self.fireCooldown = self.fireRate;
    }
  };
});

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

/****
* Game Code
****/
// Initialize arrays and variables
var towers = [];
var bullets = [];
var enemies = [];
// Create and position towers
function createTowers() {
  var tower1 = new Tower();
  tower1.x = 500;
  tower1.y = 1366;
  game.addChild(tower1);
  towers.push(tower1);
  var tower2 = new Tower();
  tower2.x = 1500;
  tower2.y = 1366;
  game.addChild(tower2);
  towers.push(tower2);
}
// Spawn enemies at intervals
function spawnEnemy() {
  var enemy = new Enemy();
  enemy.x = 2048;
  enemy.y = Math.random() * 2732;
  game.addChild(enemy);
  enemies.push(enemy);
}
// Game update loop
game.update = function () {
  // Update towers
  towers.forEach(function (tower) {
    tower.update();
    enemies.forEach(function (enemy) {
      if (tower.canFire() && Math.abs(tower.x - enemy.x) < tower.range) {
        tower.fire(enemy);
      }
    });
  });
  // Update bullets
  bullets.forEach(function (bullet) {
    bullet.update();
  });
  // Update enemies
  enemies.forEach(function (enemy) {
    enemy.update();
  });
  // Spawn enemies every 120 frames
  if (LK.ticks % 120 === 0) {
    spawnEnemy();
  }
};
// Initialize game elements
createTowers();