public void AddTail(FollowPredecessor newTailBit)
{
if (successor)
{
successor.AddTail(newTailBit);
return;
}
Vector3 dir = Vector3.Normalize(location.Value - location.Previous.Value);
ExtendPath(dir);
successor = newTailBit;
successor.location = location.List.Last;
successor.transform.position = successor.location.Value;
successor.predecessor = this;
successor.SetColor(GetComponent <Renderer>().material.color);
}