Wow, impressive indeed
And welcome to Omnimaga and the Nspire community

Wow... uh welcome to Omnimaga. That's one hell of a first post! Please excuse me while I go remove the bricks from my pants.

Wow, I thought the initial response was amazing, but people seem to like the gif even more
Thanks everyone, for your kind words!

For the people who asked about FPS, it is... somewhat strange. The movement/turning is really smooth, so is the lighting, even with 8 monsters at once shooting at you (and yes, this is on my real Nspire - CAS 2.0.1). However, the guns reload/fire about two times slower on the calculator than on the PC, which makes the game feel slow even though the movement is perfect. I'm guessing this is yet another bug, but I'll only investigate after I've fixed the big things. I am not sure, but I think the monsters still fire at the same rate, making the game almost impossible (at least for me!).
Needless to say, since the walking is so smooth, I don't think FPS will be a problem.

What could be a problem, however, is the display. Right now, the constrast is so bad on a real calculator that it is almost unplayable (you have problems even under a lamp!). At first, I thought it was because of the LCD (and the movement blur), but the contrast is equally horrible whether there's a million things all moving on the screen, or you're staring at a wall. Furthermore, running it with an inverted palette, the game is playable (but horribly confusing!). So I'm really hoping this is just a stupid palette bug, and not a limitation of the display.
As for the LCD blur itself... it's better than you'd expect (i.e. stuff is still visible while moving), but I really have to fix the low contrast in non-inverted mode. We'll see how it is after I've fiddled with it.

About the textures: I think the renderer is working perfectly, but the WAD loader is feeding it garbage data... if you consider that there's no distortion from any distance/angle, I think it's safe to rule out the renderer. There's another problem on a real calc, that it only seems to open the WAD file 30% of the time (on the emulator, it's about 95%). I'll work a bit on that, but debugging it is hard since it's pretty rare when emulated.

ExtendeD: I'll give a full report on what did/didn't work, as well as some test cases, after I fix the big bugs here and release the first somewhat playable version. One thing I must ask though, did anyone test the free() syscall on the CAS 2.0.1? It appears to crash the calc every time I call it, no matter if I'm freeing one byte or a thousand. Because of this, there's currently a memory leak of about 100kb each time you load a level...

PS: I almost forgot! I must apologize to Goplat and his amazing emulator, for not thanking him in the first post! The file transfer is still a bit iffy (I couldn't transfer the 4 meg WAD file, so I had to split it into 3 smaller files, then write a small program to merge them back together), but I can't complain, since the emulator is a blessing enough by itself. Good work!

Ranman: well, Mrakoplaz will soon reach 5 posts anyway
He can also join #omnimaga, #ti and #inspired on EFNet, that's where the action lies. Let's also mention #cemetech for completeness, though there is less Nspire action there, AFAICT.

What could be a problem, however, is the display. [snip]

Yeah, the Nspire's screen is terrible, much worse than the screen models across the TI-68k and TI-Z80 series. I interpret this as another proof that TI designed that calculator for pure education purposes... The TI-68k & TI-Z80 screens aren't that great, but they do a decent job, so we could convincingly say that TI used a cheap screen in the Nspire, so that fast gaming would suck.

nDOOM could be a serious contender for ticalc POTY 2011

Wow... uh welcome to Omnimaga. That's one hell of a first post!

Yeah...

That's awesome!

OK, since everyone requested it, I'm putting up my current build of nDoom, with the biggest problems fixed (huge problems still remain, but at least you can see what's on the screen now).

Here's the distributable, along with the source, for anyone who's interested:
http://www.box.net/shared/mlravudct9

This is seriously unfinished, so don't say I didn't warn you!

Some known problems

• Wall/Sky textures, obviously
• Screen too dark on real calculator (funnily enough, yesterday it was too bright)
• Gun refire laggy, although world movement fine for some reason (on real calculator)
• Too fast (on emulator)
• The quit function sometimes freezes/resets the calculator (something to do with the graphics shutdown function, I think...)

So yeah. Try it at your own risk. And thanks again to all those who replied! I hope the shortcomings of this release don't disappoint you...