public void CleanupEngine()
 {
     VisibleItem   = null;
     SightingItem  = null;
     SmellableItem = null;
     SnifferItem   = null;
     Visible       = null;
     Sighting      = null;
     Smellable     = null;
     Sniffer       = null;
     Map           = null;
     Engine        = null;
 }
 private void InitSmellableItem(Vector2 pos)
 {
     SmellableItem = new DebugSmellableItem(pos);
     Smellable     = SmellableItem.GetProperty <SmellableProperty>();
     Engine.InsertItem(SmellableItem);
 }