thx StraToN for your comment. The light and the box had a fixed position in the room for testing purpose.
I have change it to a random place depending on seed and room pattern.
This update is only in the in the newest source code commit. Builds are not changed.
At the moment when you start the prototype your are always in room Vector2(0,0).
The room are generated with this coordinate.
You can walk around from room to room and you get always the same room on the same place.