> direction merged into special attack enum
> direction outside special attack using a different enum
> both are stored in a single overloaded variable
> separate variable for direction only used during dashes, but only
pointlessly, in addition to the other one
That function's gonna be terrible.
Part of P0163, funded by Ember2528.
Used for the 東方★靈異伝 effect at the beginning of each scene. Good
that there's this second TRAM page, that's how we can be lazy and just
write into the 26th row :tannedcirno:
Part of P0157, funded by Yanga.
A small function that prompted lots of research into whether it's
actually correct… which then revealed that every single widely used
PC-98 emulator is broken in this regard. More about that in two
upcoming pushes…
Part of P0157, funded by Yanga.
Third longest function in all of PC-98 Touhou, and it's even more of a
copy-pasta than the patterns we've seen earlier. Certainly didn't feel
that long.
Part of P0156, funded by Ember2528.
It's script-like code, what can you say. Maybe minimally sloppy in some
places, but ultimately harmless.
Oh, the Siddhaṃ seed syllables are supposed to show up immediately, with
no delay between them? Good to know – clocking your emulator too low
tends to roll them down from the top of the screen, and does add a
noticeable delay between the individual images.
… Wait, but this means that ZUN could have *intended* this "effect".
Why else would he not only put those syllables into four individual
images, but also show them on the foreground VRAM page?
Completes P0141, funded by [Anonymous] and rosenrose.
This gets rid of a couple of per-entity sprite bitplane types, makes
sprite declarations easier to read by putting width and height next to
each other… and points out a number of array dimension mistakes -.-
Even in places where we can't use it.
Part of P0138, funded by [Anonymous] and Blue Bolt.
Segment alignment forces us to do all of those at once… but now, we've
not only caught up with the segment split point in TH04's OP.EXE and
MAINE.EXE, but also decompiled all instances of DEFCONV functions!
Part of P0138, funded by [Anonymous] and Blue Bolt.
Boom! Clever segment renaming allows us to link the same .OBJ into 12
binaries.
(Well, 10 for now, due to alignment issues in TH04's OP.EXE and
MAINE.EXE.)
Part of P0138, funded by [Anonymous] and Blue Bolt.
eeb4e7e changed the final C translation unit that used this header to
C++, and we got some more helpful inline functions upcoming.
Part of P0136, funded by [Anonymous].
DOS is not the same thing as the underlying CPU, after all. A separate
file not only indicates to future port authors which parts of the code
are x86-specific, but it also speeds up build times…
… in theory, because removing 677 lines from 49 files each doesn't seem
to speed up the build as much as I had hoped? But apparently my whole
system mysteriously got faster in the meantime, and I was getting 22-23
seconds for the entire repo even before this commit. Good enough.
Part of P0134, funded by [Anonymous].
It's not necessary for assigning `__seg` pointers to `far` ones, which
might even remove the <dos.h> dependency in some translation units.
Part of P0134, funded by [Anonymous].
Might seem inconsistent, given that the function initializes pointers
that are declared in planar.h… but it's always called from other game
initialization functions that don't require pc98.h or planar.h.
Part of P0133, funded by [Anonymous].
Actually fairly average, as far as unreasonable decompilations are
concerned. No `goto`, at least! Another place that would benefit from
EGC raster op documentation, though.
Also, got one more padding byte in TH05's MAINE.EXE correct. 🙂
Part of P0126, funded by [Anonymous] and Blue Bolt.
Rather than preferring either the Microsoft/Watcom `(in|out)pw?` style,
or the Borland `(in|out)portb?` style, master.lib had to introduce its
own `(OUT|IN)P[BW]` naming scheme… Insert obligatory xkcd standards
comic.
Part of P0126, funded by [Anonymous] and Blue Bolt.
Not really surprising why this works, and probably was how the original
code looked all along: The function is never called from anywhere, and
as long as the next function still lies on the same 16-byte paragraph,
it makes no difference whether the unused one is placed at the end of
the previous segment, or the beginning of the next.
Which means we can choose whatever leads to fewer translation units 👍
(Maintenance mode commit)
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.
All this CPU time spent optimizing the unblitting mask, yet the code
still ends up glitching if the two sprites are more than 2 horizontal
bytes away. So, Reimu's slide speed can only be as high as 8 pixels per
frame, before this function fails to unblit the previous sprite and
leaves little Reimu parts in VRAM.
Part of P0123, funded by Yanga.
Some of the unused interleave masks are not that straightforward, so it
makes sense to have all of them as a bitmap. I'm positive that this
sort of thing could have been EGC-accelerated… although, simply
writing better C would probably already go a long way.
Part of P0121, funded by Yanga.
Well well, the choice between sorting this function mechanically (and
putting it next to the EGC functions) or contextually (and putting it
next to the GDC SCROLL function)… Any choice would eventually turned
out suboptimal, I'm sure. 😅
Part of P0121, funded by Yanga.
The main effect behind the discoloration seen in the bomb animation,
as well as the exploding squares at the end of Kikuri's and Sariel's
entrance animation.
Single-function segments are lovely, by the way!
Part of P0121, funded by Yanga.
Wait, so if this is only used for the rotating white squares around
Mima, that must mean that the white star in the YuugenMagan fight got a
completely redundant reimplementation…
Part of P0121, funded by Yanga.
Not only getting rid of the "useless" (and thankfully, consistent)
bitplane parameter, but also allowing those shortened macros to be
redefined for the upcoming little ZUN inconsistency.
Part of P0120, funded by Yanga.
nmlgc