Ah clever trick. That should work thanks.
Another question. Although the latest wip version of redpill is already faster, it still slows down by multiple objects. So I can't add more then 10 enemies in one level. It seems that objects that aren't on screen are also loaded. So the start of a level is slow, then with every enemy you kill the game gets faster. Not pretty. So is it possible to have a global setting to only load objects that are on screen?