wumpus-basic

Copperbox revision 1984.

I've now reworked the font loader code (rather than just changing the namings).

The new code has capabilities for logging warnings during font loading, and it should also allow using different font loaders for the same drawing[*]. However, while these features are now in the code I haven't yet changed the API to make them visible.

[*] Mixing different font loaders is not going to be particularly useful in practice unless I develop a TrueType font loader. The current loaders can only load different metrics for what are essentially the same 14 fonts.