Neatly dissolves two of the three game-specific preprocessor branches
in `th01/hardware/grppsafx.h`. Moving at least one function into a
corresponding .cpp file will also simplify the corresponding debloating
commit on the respective branch.
Part of P0229, funded by Ember2528.
And get rid of the constraining FX() macro, with its spacing parameter
that we haven't even seen used so far.
Part of P0124, funded by [Anonymous] and Blue Bolt.
Whew, time to look at every `int` variable we ever declared! The best
moment to do this would have been a year ago, but well, better late
than never. No need to communicate that in comments anymore.
These shouldn't be used for widths, heights, or sprite-space
coordinates. Maybe we'll cover that another time, this commit is
already large enough.
Part of P0111, funded by [Anonymous] and Blue Bolt.
Lol, the internal alphabet cursor position is actually stored as the
on-screen top-left position of the selected character, which this
function then maps back to a character index. At least that gets rid of
quite a bunch of PI false positives now.
Part of P0092, funded by Yanga.
I did consider not doing this, because "well, can't anyone who's
*actually* interested just diff the TH01 and TH02 implementations to
figure out the differences themselves", but that duplication ended up
feeling too filthy after all.
And hey, it's a nice excuse to update TH02's version to current naming
standards! 😛
Part of P0068, funded by Yanga.
nmlgc