ordoor/doc/formats/fonts.md

Fonts

*.fnt

These are simple ASCII files. Here's an extract from basfnt12.fnt:

basfnt12.spr

r  65  90   0  25  A-Z
r  97 122  26  51  a-z
r  48  57  52  61  0-9
v  63      62      ?
# ...

done

The first line references a .spr file to read from. Then we have a list of records that must specify mappings of ASCII -> glyphs.

First guess at the format:

• r | v is range vs. value
• Next we have the starting ASCII code
• For r, we now have the finishing ASCII code
• Next we have the starting position in the .spr file
• For r, we now have the finishing position in the .spr file
• Finally, just a comment?

Assuming that's all true, basfont12.fnt has 86 entries. It looks like a normal .obj file with... 86 entries. Good enough for me!

There's also a cboxfont file, which seems to be junk. cboxfont.spr and cboxfont.fmt exist anyway. But who knows what else it might have in it.