public void SetUp()
{
for (int i = 0; i < walkers.Count; i++)
{
DestroyImmediate(walkers[i].gameObject);
}
walkers.Clear();
for (int i = 0; i < numofdoods; i++)
{
Walker walker = prefab.Duplicate(transform.position + new Vector3(distance * i, 0, 0));
walker.transform.SetParent(transform);
walkers.Add(walker);
}
}