Brian Schröäer wrote:

> A small example project I once used in a ruby course can be found at.
> 
> http://ruby.brian-schroeder.de/ants/
> 
> Its cut down to be as simple as possible. Maybe it can help you as a
> starter.

That's a very nice project, that helps quite a lot. Thanks, and thanks for
every other suggestion!
Now I do have a question: what is the "best" way to animate my robot walking
trough the maze? I probably should do some threading? 
And one more thing: can I use existing images (png) as tiles for my maze?

I'm starting to like this language...
-- 
"May the source be with you"