I've found a glitch. Although you can't move through walls/crates while pressing one direction, if you hold down one and then press and hold another, you can move through things.

Ok, maybe the problem to program a KI is at the moment a bit too hard for me; but I'll work on it. but there will go some weeks away, before I can upload it, I think; it's a really hard problem and really complex... I never thourght, that it would be that hard. OK have fun with this version for the mom.