No loops because (as it's a game AI) it's meant to be called once per game tick, rather than as a driver. I didn't try continuations but it's possible you could

No loops because (as it's a game AI) it's meant to be called once per game tick, rather than as a driver. I didn't try continuations but it's possible you could get something like that to work. As a Rubyist for a decade now, please avoid is_a? if at all possible. It defeats the awesome flexibility that is duck typing. Also, I have no idea why you feel that would be better for cases, my code ran in a case statement for brevity. 'look' told me that it returns an array of Spaces. They're the same type as the Space feel returns. Agreed on pivot though.