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);
}