For some reason I've been inspired to work on my own stuff in the evenings as well, even though I still need to finish my thesis (can't wait to get that done, another month to go).
I'm seriously contemplating working/finishing an entry for the 4e4 contest. It'll be a basically 2d platformer but using a 3d engine. I'm using Quake3 levels for the levels, and Doom3 models for the player models at least, and maybe for static objects as well.
I've got the Quake3 map loader working image. I've created that test map in Qeradiant, and I've already been able to add some custom entities (the boxes). Detecting what the height is under a player position is a breeze with the bsp structure, and one of the floors is colored slightly blue here to give a visual indication of that. Also the bsp planes are shown.
The Doom3 mesh loader is working correctly as well: image, and I think the animation loader is also correct (image), but I haven't gotten animations to work yet. But then I've only spent two evenings on the doom3 code, so I'll get there.
Happy coding to all you, and until next time.