1bir (1 Block Interactive Raycaster) - Source Code

Here are the sources used to assemble 1bir.prg and 1bir-alt.prg binaries.
The changes between the sources are minimal and actually could use some macro
to switch between two versions. Nevertheless, this is how I worked, so I did
not want to do any change in that direction. It is also cleaner this way, I
believe.

I added comments where I see it fits, but I hope I did not go too overboard or
vice versa. In case of any complaints, questions, comments you can always
contact me anyway. :-)

The sources can be assembled with 64tass, and probably with native Turbo
Assembler. I said "probably", as I did not have chance to try it on the real
thing this time (we recently moved our home and has no C64 setup anywhere yet).

I hope it becomes useful for somebody.

Wisdom/Crescent
April 23th, 2013

http://crescent.io
