Well, what I did in my bombermaze thing is move the character 4px (or a bit more) each time you press.
But this is done smoothly, using the timer. So, it feels quite responsive and looks good

Just want to make some things clear.
1)
The method of drawing images to the screen depends of the platform you are running your program on, and not the language.
So drawing something on the screen is different than drawing it on the nspire. Although, if hoffa finishes the SDL port, then programs using SDL on the computer will use the same methods as drawing stuff with SDL on the calculator.
You can use nRGBlib for now
2)
I don't see why you are comparing actionscript and c to flash and DOS.
C is a language, DOS is a platform and has not much to do with C.
Actionscript is very similar to javascript (infact, its a dialect of ecmascript), which in turn means that there are quite some similarities with it and C.
But now, it are the libraries and functions that count, not the language

Those things definitely could be used, but maybe we could try to improve the functions/event stuff TI made, so we keep compatibility.
I guess this is a bit more complex, but it might be worth the try

Just plainly epic, I can't describe how happy I am!

(Because now you can do anything with Lua, anything)

Very nice and good work Critor

Nice to see the progress!

Looks very nice