Algodoo

It's definitely fast, but it's also erratic. The first time I ran the scene, the robot got stuck half way through the maze and just erratically spun around in one spot. The same thing happened again in a different spot after a couple more runs.

UPDATE: It doesn't seem to like the inside corners. That's usually where it gets stuck.

I tried 15 runs. On the 14th run it got stuck for about 3 seconds in a corner, but then continued. I've made some changes that I think should improve the reliability, but it's hard to test, since now it doesn't fail on my machine.

Much better now. I ran it through the loop about twenty times without any problems. Good job!

Nice trick. You could actually switch collidesets go get onCollide every step instead of using gear

Xray,

Thanks for making me aware of the problem and and checking after I fixed it. I've run it continuously for 13 hours now with no hangups.

Kilinich,

Thanks for the helpful hint. I will try that. I initially tried a circle and was disappointed to find it only had one collision.

strange