I couldn't figure out level 5, and here is my level six at the moment http://i.imgur.com/vvZOX.png bit of tweaking and I'll have it
I would be interested in collaborating with you to add some more physics: refraction (laser passing through slabs of glass) and curved surfaces (parabolic mirrors and lenses using the thin-lens approximation).
This would be the coolest way to learn about ray-optics.
- refraction polygons - concave/convex lenses - concave/convex mirrors
I think the easiest way to add these would be to just make them fixed objects in the level (so the only drag-able items would still be the straight mirrors).
Quite happy to finally get level 11 done.