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ordoor/doc/formats/fonts.md

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2018-12-31 00:57:19 +00:00
# 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`](obj.md) 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.