Not only would the `(GAME != 2)` need to include TH03 in the future,
but this `#undef` trickery will blow up once we start reorganizing the
`#include`s in the next few commits.
Sadly, a few source files use master.lib's grcg_off() function in one
game and the macro in the other, which makes it infeasible to assign a
distinct name for every function.
Part of P0284, funded by [Anonymous] and Blue Bolt.
9th PC-98 Touhou boss almost completely decompiled, 22 to go!
I definitely did not miss the convoluted control flow of the TH05 ones.
Part of P0227, funded by nrook.
Using the .BB entrance animation as a transition between stage tiles
and the backdrop image. Also implemented in a much better way.
Part of P0189, funded by Arandui and Lmocinemod.
It's basically the same function copy-pasted 4 times, differing only in
the backdrop image coordinates and some other inconsequential details.
Part of P0189, funded by Arandui and Lmocinemod.
nmlgc