Move the mirrored triangles with the mouse, and press R to rotate the one the mouse is on. Press SPACE to fire the laser from the lower-right corner. If the laser hits the grey side of a mirror, it will remove the mirror. Updated with better-looking bounces and a fix for the infinite-loop bug. !!!! Second time on the front page as a curated project. If you have any suggestions for improving the project (not too ambitious: I don't have very much time), please post a comment.
