IEnumerator InfectAnimation(TagNPCMove victim)
 {
     Instantiate(infectParticlePrefab, victim.transform.position, Quaternion.Euler(-90, 0, 0), victim.transform);
     for (int i = 10; i >= 1; i--)
     {
         victim.walkSpeed = (0.008f) * i;
         yield return(new WaitForSeconds(1.7f / 10));
     }
     zombies.Add(victim.Infect());
 }
        public bool InfectOne()
        {
            if (npcs.Count <= 0)
            {
                return(false);
            }
            TagNPCMove victim = npcs[Random.Range(0, npcs.Count - 1)];

            npcs.Remove(victim);

            StartCoroutine(InfectAnimation(victim));

            return(true);
        }