This ROM fleshes out the snake mechanics from the animated background demo rom. I'd say it's about 80% finished, but the remaining 20% is mostly polish and extra features that I don't really want to spend time on.
Requirements:
$ git clone --recurse-submodules https://github.com/zorchenhimer/nes-snek.git
$ cd nes-snek && make
After the above commands you should have bin/snek.nes. This ROM can then be
loaded up in an emulator or dropped on a romcart to run on hardware.
The food item locations are generated by rand.go. These locations are stored
in two separate talbles: rand.inc and coords.inc. The first file,
rand.inc, contains RAM address locations for the playfield while coords.inc
holds sprite Y/X coordinates. These two files are included in the repository
to allow for reproducable builds. Running make cleanall will delete these
files, triggering them to be re-generated. If this is done in error running
the command git checkout -- *.inc will restore these files.
Change the snek's direction with the D-pad. The A and B buttons have no function.
The images used were made using Aseprite which a paid program. The exported
bitmaps have been included in this repository to avoid requiring this program
to build the ROM. Note that the make cleanall command will delete the
bitmaps to trigger re-exporting them using Aseprite. If this is done in error,
simply use git to restore the images: git checkout -- images/*.bmp.