## Levels:

- use first line as background image name
- ignore comments in lvl files
- check  when sphere bounces from  one end to the  other endlessly w/o
  any solids in between. this is a game lock and equals game over
- Start the game  end timer and add a score FIXME:  put the actual max
  reachable score  into the  level definition  along with  the minimum
  steps required to reach it, also add a step counter

- Grid Observer:
  https://github.com/mlange-42/arche/issues/374