I wanted to do this with TDD, but I couldn't get the first test to pass.. simply requiring a blank .rb file. Wasted 40 minutes on that. Almost said, "forget this whole thing." But I pressed on without doing R-Spec.
I look forward to seeing better ways of doing all that I'm doing. The way this is turning out for me is C++ esuqe , or maybe JS. Not very Ruby. But, that's how I think right now. I sure hope someone can help me steer straighter.
For reference, here's the link to the TurtleTracks challenge: http://puzzlenode.com/puzzles/9-turtle-tracks