Whoa, I go off to try CalcCapture, and when I come back there's loads of replies! Thank you, everyone! Glad to see people like it.

Here's an alright, but 1.3MB, GIF for all those who want it (hyperlinked for those with low bandwidth):
http://img407.imageshack.us/img407/7279/20008.gif
[I don't strafe because of an annoying controls bug, which is evident near the end - I try and strafe to avoid the incoming fireballs, but warp over into the radioactive water and die]

For those who want the build, I'll put one up tomorrow (tns + source - but beware, there's been zero cleanup so far) when I've fixed the strafing, and hopefully also the textures [floors and ceilings are fine, but walls aren't]. I must repeat that I am working off the 1997 source release, and that I didn't do it all myself - mostly, I've just been translating system-specific calls and fixing bugs [I'll put up some of my observations in the Ndless thread, also probably tomorrow, as it's getting late now].

Critor:
I am not quite sure what defines raycasting (this is my first experience with a 3D engine), but I don't think Doom uses it; It's not a proper 3D engine, you can't have rooms above each other or look up/down. Instead, it uses lots of shortcuts and tricks to make it look like that.

ExtendeD:
Thanks for the link about the contrast - I've actually already noted down those addresses, but getting the 3D working has been the priority so far.
I've only been using the default nspire_emu to this point, but I'll look into Ncubate.
Oh, and there's nothing impressive about this. I just downloaded the Doom source, spent a week doing lots and lots of modifications [mostly because the original ID developers used lots of cheap hacks that worked in 1993 DOS, but caused trouble to the Nspire - also, rewriting the whole event system, as the original used function pointers with arguments, which the Nspire doesn't seem to like either], and that's it. Managing to bypass the protection and hacking the Nspire? Now that's impressive.

 
Welcome! That doom port looks awesome! I cant wait to see more screenies! 
How many FPS are you getting? The animated screenie looks choppy but it could just be the gif.

Calccapture unfortunately can't record at very high framerate, but it looks epic :O

I might start to cry for not having an NSpire q:

I can't do anything else than to look at this being astonished! I was always intrigued by FPS games on calculators (like Wolf3D and Gemini on the TI83's and84's ) Good luck on your further progress with this, it looks quite damn epic already!

I was intrigued by those games too, but they all crashed on my nspire's 84SE emulator.

AWESUUUUUUUUUUUUUUUUUUUUUUUUUUUUM GIF, Congratulations, that's really really impressive!

Quote from: JoeyBelgier on January 01, 2011, 08:11:18 pm

I can't do anything else than to look at this being astonished! I was always intrigued by FPS games on calculators (like Wolf3D and Gemini on the TI83's and84's ) Good luck on your further progress with this, it looks quite damn epic already!

I was intrigued by those games too, but they all crashed on my nspire's 84SE emulator.

None worked? Damnit Texas Instruments... X.x