public void Remove(Explosion e)
{
Debug.Assert(e != null, "Explosion is null");
ExplosionList.Remove(e);
EntityList.Remove(e);
GravityPointList.Remove(e);
}
public void Add(Explosion e)
{
Debug.Assert(e != null, "item is null.");
ExplosionList.Add(e);
EntityList.Add(e);
GravityPointList.Add(e);
}
