private void OnTriggerEnter2D(Collider2D collision)
    {
        Patrol enemy = collision.GetComponent <Patrol>();

        if (enemy != null)
        {
            enemy.damage(damage);
        }
        FlyingEnemy enemy2 = collision.GetComponent <FlyingEnemy>();

        if (enemy2 != null)
        {
            enemy2.damage(damage);
        }
        if (collision.name != "SchmanWithGun")
        {
            Destroy(gameObject);
        }
    }