This is a small project I made for personal use, but I'll post it here anyway in case someone finds it useful.
It displays a text file in the Examples directory (any file with name of the form *.txt.tns). You can scroll down through the file, but not up
To use, find a text file, rename it with a .txt.tns extension, and send it to Examples. Then run the program and select the file from the list.
The program is Non-CAS only, since there are no CAS symbols for the directory listing functions yet.

Would it be possible to make the text entry box in OmnomIRC not grab focus as soon as the page is loaded? I often visit on a laptop with no mouse, and the auto-focusing makes it hard to scroll down using the arrow keys.

In case anyone is interested, here is the old floor casting code from Ncaster. Its rather rudimentary, but with a bit of modding you can cast a tilemap.
It might be useful for a racer or something.
To compile, drop main.c and rayheader.c/h into an standard Nspire dev directory, modify the Makefile appropriately, and compile as usual.
It is interesting to note that this is technically a real-time raytracer, albeit a very, very, very limited one. Madness!

I was experimenting with bitmap file loading today, and the program has reached a semi-usable state, so here it is.
It has no file browsing, so to use it, you will need a 24-bit bmp file with dimensions less than 320x240, renamed to
test.tns and placed in a folder called bmpviewer on the Nspire. It has only been tested with bitmaps produced by the GIMP.
Hopefully I will figure out how to add more features (like browsing) in the future.
Enjoy!

I have seen more than one post talking about writing some basic libraries for the Nspire, so I felt that it would be a good idea to start a thread to post any headers we have.
I will start with a modified utils.h/c that supports drawing pixels to a screen buffer. This should be useful for people doing graphics functions.
Right now we need:
-Program Loader
-Graphics: Triangles, dithering, filled circles, etc.
-Better Text I/O (I wrote some, but they are a bit weak)
-More OS symbols
-An implementation of the standard library (stdlib.h, stdio.h, etc) for easier porting.

EDIT 1: Attached a file skeleton.zip. Edit your Nspire code in this folder, and then type 'make' to build. It provides the minimal portion of Ndless required to write programs.
EDIT 2: Attached willrandship's modified common.h, with all the keycodes in it.
EDIT 3: Found a small bug in common.h.
EDIT 4: Latest skeleton.zip
EDIT 5: Realized that MakeTNS is platform-dependent. skeleton is split into Linux and Windows versions.
EDIT 6: Attached a graphics.h/c, which is a not quite finished, but still useful, collection of graphics routines. Right now it contains fast circle and line routines, and some functional but slow rectangle and sprite routines.

EDIT 7: common-fixed.h and utils.zip are now unnecessary. They have been integrated into the skeleton.zip files, so don't bother downloading them. graphics.h/c are still separate for now, and will be until they are finished.

EDIT 8: Updated graphics.c/h to graphics2.c/h. This one contains a much better sprite routine that uses proper memory-copying methods to draw the sprite. The sprite data format has changed, so if you have any old sprite data pass them to
convsprite(char* sprite, char* result, int w, int h)
Here, result is a buffer that is of size w * h / 2 used to hold the new data.
EDIT 9: apcalc found a small bug in common.h. Fixed!
EDIT 10: Fixed a nasty sprite() bug.
EDIT 11: skeleton-windows.zip and skeleton.zip merged. I added a few text and string routines to it (string.h, screen.h) as well as dirlist.h, which lets you list the files in a given directory. Yes, I know this violates EDIT 1, which states that skeleton.zip is minimal, but being able to draw text is too useful. Also, common-fixed.h and utils.zip have disappeared.
EDIT 12: added a function filesize(char* path) to utils.h. Pass it the path to a file and it returns its size.

I finally got around to writing some code for my Nspire raycaster project. Right now it is shamefully featureless, as it basically draws untextured walls from a scene defined by a hard-coded array in the source:

The big problem I'm having right now is getting the animation not to flicker (the above screenshot was not animated). Does anyone here (maybe calc84maniac?) know how to do flickerless animation on the Nspire?
Once I get the animation working, I'll add other things, like texture mapping and sprites. Also, does anyine know how to pause execution for a specified amount of time (so I can limit the frame rate)? Right now, from my preliminary flickery code, it seems like I have plenty of speed to work with.

A combination of boredom, need, and a sudden urge to test the speed of Nspire Basic has caused me to write a symbolic manipulator/CAS for the regular TI-Nspire. It does factorization, expansion, differentiation, and several other things right now, with varying degrees of success and slowness. It most notably DOES NOT support implied multiplication.

Comments/suggestions about the program, its bugs, and its terrible speed (especially the differentiator) are all welcome.

How do you insert images in posts? Clicking the "Insert Image" button just gives me a pair of img tags.