Incredible Physics Contraptions, our Incredible Machine clone, is picking up. We have a mailing list, an IRC channel (freenode#ipc), a team of five. Now all we need is some code :-)
Seriously, the code is coming along nicely. I mean, I’ve only got 400 lines or so, but it’s enough to get started. There’s some lean, mean archetectural stuff in there, which was fun to finish. The Widget traversal system uses functors to separate the order and number of passes from the code that does each pass. Very nifty.