Yes, this is the best time to cover these, since Stage 6 Yuuka's
animation state is reset in a variety of the boss phase end functions…
Part of P0086, funded by [Anonymous] and Blue Bolt.
Adding op/, main/, and end/ directories does nicely cover a great
majority of the "not really further classifiable slices" implied in
d56bd45.
Part of P0086, funded by [Anonymous] and Blue Bolt.
As if ZUN had coins for every possible optimization of these rendering
functions, and flipped them seperately before implementing each.
By now, we've probably seen it all though.
Also, 25% RE milestone passed!
Part of P0085, funded by -Tom-.