Commit Graph

7 Commits

Author SHA1 Message Date
nmlgc e65cf0d05d [Maintenance] Change a few ASM .inc files to use 8.3 names
Part of P0035, funded by zorg.
2019-09-24 21:58:18 +02:00
nmlgc 6f1f36722f [Reverse-engineering] [th01/th02/th04/th05] Player invincibility frames
Completes P0034, funded by zorg.
2019-09-24 21:57:53 +02:00
nmlgc c77a9276d3 [Reverse-engineering] [th04/th05] Death-related variables
Including the confirmation that both games have an 8-frame deathbomb
window.
The placement of the variables is all over the place though, what the
hell?

Part of P0034, funded by zorg.
2019-09-24 21:57:46 +02:00
nmlgc f8213c5a32 [Reverse-engineering] [th04/th05] HUD bar display
So it's *_put(), inherited from master.lib, for everything just writing
to text RAM, and *_render() for everything more involved? But what
about master.lib's own graphics RAM functions like super_put()? Need to
fix that inconsistency some day.

Once again no decompilation, because…

Part of P0033, funded by zorg.
2019-09-21 14:01:50 +02:00
nmlgc e6294c2c1a [Reverse-engineering] [th02/th04/th05] Score update and display
The TH02 version is a piece of cake…

… but TH04 starts turning it into this un-decompilable piece of
unnecessarily micro-optimized ZUN code. Couldn't have chosen anything
better for the first separate ASM translation unit.

Aside from now having to convert names of exported *variables* to
uppercase for visibility in ASM translation units, the most notable
lesson in this was the one about avoiding fixup overflows. From the
Borland C++ Version 4.0 User's Guide:

	"In an assembly language program, a fixup overflow frequently
	 occurs if you have declared an external variable within a
	 segment definition, but this variable actually exists in a
	 different segment."

Can't be restated often enough.

Completes P0032, funded by zorg.
2019-09-21 14:01:47 +02:00
nmlgc 88c05e48e5 [Maintenance] Move a few more ASM definitions to their own .inc files
Part of P0032, funded by zorg.
2019-09-21 13:05:54 +02:00
nmlgc d19f91914e [Maintenance] Mirror the TH04/TH05 C header sharing on the ASM side
Part of P0032, funded by zorg.
2019-09-21 13:04:28 +02:00