IEnumerator HitZombies(GameObject zombie)
    {
        float       waitime      = 0;
        ZombieMover zombieobject = zombie.GetComponent <ZombieMover> ();

        //zombieobject.ShowEffect ();
        if (zombieobject != null)
        {
            zombieobject.FireEffect(true);
        }
        if (zombieobject != null)
        {
            while (waitime <= 3)
            {
                if (zombieobject.health > 0)
                {
                    zombieobject.ReduceHealth(2f);
                }
                yield return(new WaitForSeconds(0.4f));

                waitime += 0.4f;
            }
        }
        if (zombieobject != null)
        {
            zombieobject.FireEffect(false);
        }
    }