Much more than usual, now that we've got a snappy build system! This
commit covers
• All .PI functions across all games
• TH02's High Score entry functions
• TH03's shots_update() and shots_render()
• All functions declared in `th04/op/op.hpp`
• TH04/TH05's bb_txt_put_8_raw(), bullet_template_clip(),
player_pos_update_and_clamp(), score_update_and_render(), and
slowdown_frame_delay()
• TH05's reimu_stars_update_and_render(), score_delta_commit(),
stage2_invalidate(), stage2_update(), and space_window_set()
Part of P0284, funded by [Anonymous] and Blue Bolt.
What is this, reversed Hungarian notation? For gaiji strings, it makes
sense because there's no difference in the access code to regular
strings, but you can't really do anything with a union itself.
(Besides passing it to a function in a type-safe way, but that's cool.)
Part of P0186, funded by [Anonymous] and Blue Bolt.
… (24 + (difficulty * 8) + rank) in TH04, and (42 + (difficulty * 8))
in TH05. Also, TH05 only doesn't have TH04's bullet zap animation
because ZUN didn't consistently use constants…
Completes P0151, funded by Blue Bolt and -Tom-.
nmlgc