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13 Commits

Author SHA1 Message Date
nmlgc 07561f4824 [Reverse-engineering] [th03] Collision bitmap: Drawing vertical lines 
Ironically only used for pellets, which are now confirmed to have a 2×2
(screen) / 2×1 (VRAM) hitbox. Might have been "decompilable", but it's
sandwiched between undecompilable functions.

Part of P0182, funded by Lmocinemod and [Anonymous].
 2022-02-18 09:36:34 +01:00
nmlgc c04ca8da91 [Reverse-engineering] [th03] Collision bitmap: Drawing slopes (undecompilable) 
Reason: Self-modifying. -.-

Only used in Chiyuri's EX Attack (the one with the diagonal lasers).

Part of P0182, funded by Lmocinemod and [Anonymous].
 2022-02-18 09:36:34 +01:00
nmlgc 3072208336 [Reverse-engineering] [th03] Collision bitmap: Variables and constants 
Oh wow, it's exactly how I always naively imagined collision detection
to be implemented in a fixed-resolution 2D bullet hell game with small
hitboxes.

Part of P0182, funded by Lmocinemod and [Anonymous].
 2022-02-18 09:36:34 +01:00
nmlgc 70cbf4bbe1 [Maintenance] [th03] Adopt the PlayfieldPoint subpixel type from TH02/TH04/TH05 
Makes sense for this game as well, even if it can only serve
documentary purpose due to it not knowing which playfield it's on.

Part of P0182, funded by Lmocinemod and [Anonymous].
 2022-02-14 07:03:34 +01:00
nmlgc 5fac2006ff [Maintenance] Consistently use "score" instead of "points" 
Or at least in addition.

Part of P0172, funded by [Anonymous] and Blue Bolt.
 2021-12-27 00:50:39 +01:00
nmlgc 99aee2bdbe [Maintenance] Consistently use singular for entity structure and file names 
Not too sure about "chars" yet, with TH03 and all.

Part of P0168, funded by Blue Bolt and rosenrose.
 2021-11-28 19:14:02 +01:00
nmlgc fb67d4d054 [Maintenance] Rename all old *_X and *_Y constants to *_LEFT and *_TOP 
Part of P0112, funded by [Anonymous] and Blue Bolt.
 2020-08-28 15:14:22 +02:00
nmlgc c5b5dc0201 [Reverse-engineering] General bomb-related globals 
Yup, function pointers, frame counters, and general state variables for
all 5 games.

Part of P0111, funded by [Anonymous] and Blue Bolt.
 2020-08-28 15:03:03 +02:00
nmlgc 368f151759 [Maintenance] Declare distinct types for screen, VRAM, and TRAM coordinates 
Whew, time to look at every `int` variable we ever declared! The best
moment to do this would have been a year ago, but well, better late
than never. No need to communicate that in comments anymore.

These shouldn't be used for widths, heights, or sprite-space
coordinates. Maybe we'll cover that another time, this commit is
already large enough.

Part of P0111, funded by [Anonymous] and Blue Bolt.
 2020-08-28 14:53:30 +02:00
nmlgc bd1c2ee7de [Maintenance] #define the number of dots in a byte 
One fewer magic number. And one more deliberate dependency on a
PC-98-specific hardware constant, to further drive home just how
unportable these games are, even once decompilation will be complete.

Part of P0105, funded by Yanga.
 2020-08-12 16:16:58 +02:00
nmlgc 8f8940801d [Maintenance] Move the Subpixel class to TH01 
At least pellets are moved at a decent precision in this game.

Part of P0099, funded by Ember2528.
 2020-07-12 15:16:03 +02:00
nmlgc 97dce75446 [Maintenance] Proofread all comments in C land 2020-06-21 22:14:08 +02:00
nmlgc d1f3dcd620 [Maintenance] Move all features exclusive to MAIN.EXE to a main/ subdirectory 
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.
 2020-04-15 20:58:01 +02:00