The .PTN functions, vector functions, and egc_copy_rect_1_to_0_1()
(finally!) from TH01, as well as playfld.hpp from all games(finally!),
together with a bunch of other functions in their vicinity.
Part of P0201, funded by Ember2528 and Yanga.
In which all the declarations expand the C++ code to take up more lines
than the previous compressed ASM representation.
Part of P0166, funded by Ember2528.
And that's why these feel so awful in-game: Interlaced rendering, and
an unfair 46×46 hitbox around Reimu's center point.
Part of P0165, funded by Ember2528.
Only seen in Mima's fight, but initialized for all non-final boss
fights. Also with explicit support for all 8 origin edges, not just the
top-right one used in Mima's fight… and an off-by-one error?!
Completes P0160, funded by Yanga.
nmlgc