These are my notes on reconstructing the original code.
I generated OPTICAL1.LST by taking photos of the original printout, and using my phone's covert to text function. I then fixed the indentation and did some cleanup in a text editor.
Find data lines that don't have 16 items:
grep Data OPTICAL1.LST | awk -F "," '{print NF-1}' | grep -v 15
When importing the capitalisation is changed, which suggests it was written with an earlier version of GFA Basic, possibly even version 2.
There is a bit of corruption in some of the images - hopefully other listings will iron that out.
The solve and make_move procedures have not been defined in this listing, even though they are called.
Sound works! (Simple beep)
When running you can click on a block then on the board to add it. Overwriting with another block works too. There's not much more than that in this version.
OPTICAL2.LST is definitely after listing 1. Has make_move, but not solve.
Has some additions written in pencil. Might be interesting to see if they were implemented later.
Found where the corrupted data in listing 1 was and corrected it. Redundant printouts FTW.
The last listing, OPTICAL3.LST, and the longest. Has a lot more logic in it. Not all the data lines were printed, so assume they haven't changed.
The game works! (However, it is very difficult. I think it would be good to make a simpler version.)
unix2dos OPTICAL1.LST
cp OPTICAL1.LST disk/gfatt36/
- Hatari emulator
- Use mono screen in settings.
- Set up C drive as described in Mandelbrot-1989.