private void OnCollisionEnter2D(Collision2D collision)
 {
     if (collision.gameObject.tag == "Player")
     {
         gunController = collision.gameObject.GetComponent <GunController>();
         gunController.AddMunition(GetRandomBullet());
         PowerUpSpawnController.Spawn();
         Destroy(gameObject);
     }
 }
 void OnCollisionEnter2D(Collision2D collision)
 {
     if (collision.gameObject.name == "Player")
     {
         PlayerController playerController = collision.gameObject.GetComponent <PlayerController>();
         playerController.ChangeSpeed(movementSpeed, animatorSpeed);
         playerController.StartCountdown(time);
         PowerUpSpawnController.Spawn();
         Destroy(gameObject);
     }
 }