e7265ac656
[Reverse-engineering] [th04/th05] Shot X/Y velocity lookup table
...
Funded by -Tom-.
2018-12-31 19:45:34 +01:00
4770d145d6
[Reverse-engineering] [th04/th05] Target position for homing shots
...
Funded by -Tom-.
2018-12-30 15:31:26 +01:00
612beb815b
[Maintenance] Clean up the confusion between "tiles" and .STD tile sections
...
Funded by -Tom-.
2018-12-30 02:30:16 +01:00
75763ccd32
[Reverse-engineering] [th04/th05] Invalidating background tiles around a point
...
…and *now* we can tackle all those entity types that were referencing
this function, with the help of uth05win.
Funded by -Tom-.
2018-12-30 00:19:18 +01:00
c2ef9d51b6
[Reverse-engineering] [th02/th03/th04/th05] Back/front page pairs
...
Because using just one variable would have totally been too
straightforward.
Funded by -Tom-.
2018-12-30 00:16:18 +01:00
35ef90f4d1
[Reduction] Page flipping
...
Funded by -Tom-.
2018-12-30 00:16:18 +01:00
c00b87ed4f
[Reverse-engineering] [th04/th05] Redrawing dirty stage background tiles
...
Funded by -Tom-.
2018-12-30 00:16:16 +01:00
bcc1b7518f
[Reverse-engineering] [th04/th05] Applying VRAM scrolling to Y coordinates
...
Funded by -Tom-.
2018-12-29 18:34:51 +01:00
dbf1e93a79
[Reverse-engineering] [th02] Current scrolling line
...
… and that's all that's superficially identical to TH04 and TH05. I lack
the funding to cover more. :P
Funded by -Tom-.
2018-12-29 18:34:51 +01:00
4fe4c8eed1
[Reverse-engineering] [th04/th05] Scrolling-related variables
...
Funded by -Tom-.
2018-12-29 18:34:51 +01:00
20d05c1653
[Reverse-engineering] [th04/th05] Rendering all stage background tiles at once
...
Funded by -Tom-.
2018-12-29 18:34:51 +01:00
6a6ce47c56
[Reduction] EGC-powered VRAM region copies
...
Funded by -Tom-.
2018-12-29 17:03:26 +01:00
e1e4f819ed
[Reverse-engineering] [th02/th04/th05] Stage background tile ring buffer
...
Funded by -Tom-.
2018-12-29 17:03:24 +01:00
8ee87233b8
[Reverse-engineering] [th02/th05] Player movement speed
...
Yes, both characters in TH04 have the same speed!
Funded by -Tom-.
2018-12-26 22:07:34 +01:00
261d5037ed
[Reverse-engineering] [th04/th05] .STD file loading
...
… because TH04's version of this takes the ASCII stage ID directly from
the resident structure.
So boss battles are simply triggered by setting the background tile
scroll speed to 0? That means…
Funded by zorg.
2018-12-26 17:59:03 +01:00
3f06c63206
[Reverse-engineering] [th03/th04/th05] Pointers to the resident structure
...
Quickly doing these despite not having RE'd the structures themselves
yet…
Funded by zorg.
2018-12-26 17:59:03 +01:00
6c555aad61
[Readme] Mention that stage portions in TH04/TH05 *are* handled by bytecode
...
Funded by zorg.
2018-12-26 17:59:03 +01:00
4a0b973c76
[Reverse-engineering] [th04/th05] Midboss-related function pointers
...
Funded by zorg.
2018-12-26 17:59:03 +01:00
25ee5990aa
[Reverse-engineering] [th04/th05] Boss battle backdrop rendering
...
Funded by zorg.
2018-12-26 17:59:03 +01:00
d211a22c9f
[Reverse-engineering] [th04/th05] GRCG-powered playfield row filling
...
Isn't it quite a bit risky to do that without a CLD in front?
Funded by zorg.
2018-12-26 17:59:01 +01:00
bc3c85f09a
[Reverse-engineering] [th04/th05] GRCG/EGC-powered VRAM writes
...
Funded by zorg.
2018-12-25 23:45:24 +01:00
41622254a8
[Reverse-engineering] EGC register writes
...
Funded by zorg.
2018-12-25 23:45:24 +01:00
b62a8b29a6
[Reverse-engineering] [th02/th04/th05] Boss-related function pointers
...
No idea what these other ones in TH02 are.
Funded by zorg.
2018-12-18 19:52:41 +01:00
0cde4b7cd3
[Reverse-engineering] [th05] Laser update and render functions
...
Funded by zorg.
2018-12-17 00:27:38 +01:00
8634e10b6d
[Reverse-engineering] [th04/th05] Bullet clear trigger and time
...
Funded by zorg.
2018-12-16 01:49:55 +01:00
4aeb035121
[Reverse-engineering] [th04/th05] A random shared draw coordinate
...
Local variables are so overrated.
Funded by zorg.
2018-12-16 00:31:05 +01:00
b3c5e4dcfe
[Reverse-engineering] [th05] Rendering and hit testing for a single laser
...
What the hell.
Funded by zorg.
2018-12-15 23:04:26 +01:00
9d79c1413c
[Reverse-engineering] [th05] Laser coordinate sub-structure
...
Yup, the draw function actually takes a sub-structure starting at 0x02.
Funded by zorg.
2018-12-15 23:04:24 +01:00
07e466cf3b
[Reverse-engineering] [th01/th02/th04/th05] Player hit flag
...
Funded by zorg.
2018-12-15 22:57:36 +01:00
e73d740926
[Reverse-engineering] [th05] Laser control functions
...
Funded by zorg.
2018-12-15 22:57:34 +01:00
ac7e6bc176
[Reverse-engineering] [th05] Rank-based speed adjustment
...
Again, one of these functions that ZUN *probably* wrote in ASM for shits
and giggles, which you *again could* "decompile" using in-line assembly,
but that kind of defeats the point.
Oh well, at least the fact that the parameter is passed in AL means that
the calling convention must have been __fastcall, and *that* part *does*
cleanly map to C. Unlike some of the functions in d08a7f4
2018-12-12 21:50:44 +01:00
807df3d5a7
[Reverse-engineering] [th05] Laser structure
...
Struct strLASER in uth05win… except that the member names in that one
were not only a bit too unclear, but `ageThres` and `shootAgeThres`
should have also been the other way round.
Also, yes, TH04's laser structure seems completely different.
Funded by -Tom-.
2018-12-12 02:49:42 +01:00
0e8bbe8130
[Reverse-engineering] [th04/th05] Player performance ("rank") management
...
Going with uth05win's "player performance" here, since we already use
"rank" for Easy/Normal/Hard/Lunatic.
Funded by -Tom-.
2018-12-10 21:00:19 +01:00
f3b6137fe2
[Reverse-engineering] [th04/th05] Midboss HP
...
Funded by -Tom-.
2018-12-09 01:09:17 +01:00
9fd3f6dbf6
[Reverse-engineering] [th04/th05] Boss position
...
Funded by -Tom-.
2018-12-09 00:57:42 +01:00
59e692a82a
[Reverse-engineering] [th04/th05] Midboss position
...
Funded by -Tom-.
2018-12-09 00:47:52 +01:00
352240e6c5
[Reverse-engineering] [th04/th05] Boss animation sprite IDs
...
Funded by -Tom-.
2018-12-09 00:47:50 +01:00
36b1a02773
[Reverse-engineering] [th05] Yuki's HP
...
Internally, Mai is seen as the "primary" Stage 4 boss.
Funded by -Tom-.
2018-12-09 00:44:31 +01:00
e855e1a908
[Reverse-engineering] [th04/th05] Boss phase end HP
...
Funded by -Tom-.
2018-12-09 00:40:20 +01:00
49a67a1a8b
[Reverse-engineering] [th04/th05] Boss HP
...
Funded by -Tom-.
2018-12-09 00:20:27 +01:00
b03bc91357
[Reverse-engineering] [th04/th05] Growing and shrinking circles
...
As seen during bomb animations, and around bosses. Class CCircle in
uth05win.
Funded by -Tom-.
2018-12-06 23:29:45 +01:00
d08a7f49b6
[Reduction] [th04/th05] Redefined GRCG mode/color setting functions
...
Funded by -Tom-.
2018-12-06 22:39:11 +01:00
70d1e1c230
[Reverse-engineering] [th04/th05] Inlined GRCG color setting calls
...
Funded by -Tom-.
2018-12-06 19:42:44 +01:00
83e089cba9
[Reverse-engineering] Inlined GRCG mode setting calls
...
Funded by -Tom-.
2018-12-06 19:18:02 +01:00
d7483c09cc
[Maintenance] Fix the TASM32 crash when assembling th03_mainl.asm
...
Right, the last path component in an INCLUDE file name is "limited" to 28
bytes. Turns out it only crashes on every system that *isn't* the main one I
develop on, though…
2018-12-04 19:55:18 +01:00
141baa4ca9
[Reverse-engineering] [th05/maine] Remaining references to CDG slot data
...
…unlike these two identical functions, which hopefully become clearer
after more reverse-engineering has been done around them. It's not like
they're directly related to CDG slot data anyway, they just apply the
TH05 version of the dissolution effect in the staff roll on top of the
already displayed image.
And that concludes all CDG/CD2-related code!
Funded by DTM.
2018-10-16 01:04:46 +02:00
01a430d027
[Reverse-engineering] [th03/mainl] CDG line removal for upwards motion
...
Not *really* CDG-related, but it does use CDG slot data, and is easy
enough to be covered right now…
Funded by DTM.
2018-10-16 01:04:46 +02:00
766a34d044
[Reverse-engineering] [th04/maine] Single-plane CDG display
...
Only used in the staff roll.
Funded by DTM.
2018-10-16 01:04:46 +02:00
4bc6da4858
[Reverse-engineering] [th03/mainl] Dissolved CDG display
...
Depending on two variables that… uh, aren't exactly related to this
function? Let's wait with those until we get there.
Funded by DTM.
2018-10-16 01:04:46 +02:00
850b8d783c
[Reverse-engineering] [th03/mainl] CDG freeing
...
Funded by DTM.
2018-10-16 01:04:46 +02:00
nmlgc