Commit Graph

2 Commits

Author SHA1 Message Date
nmlgc a533b5d3ea [Reverse-engineering] [th04/th05] Player sprite area invalidation
And once again, the TH05 version is un-decompilable. :/ It was pretty
close this time, though, as the entire block between PUSH DI and POP DI
kind of resembles a separate inlined function, in accordance with Turbo
C++'s  automatic backup of the DI register, as researched in 7f971a0.

Except that it contains a loop, and Turbo C++ refuses to inline any
function with `do`, `while`, `for`, or `goto`. If it didn't, it would
have totally worked.

Also, yes, C++ class methods are treated identically in this regard.

Oh well. Shot type control functions next, finally!

Completes P0035, funded by zorg.
2019-09-24 22:04:26 +02:00
nmlgc 39c169c30d [Reduction] Separate functions for 1D and 2D vector construction
Look at that TH05 vector2_at_opt function. What the hell, the caller is
supposed to set up the stack frame for the function? How do you even get
a compiler to do this (and no, I haven't found a compiler switch)? No
way around writing a separate "optimizer" as part of the compilation
pipeline, it seems.
2017-01-08 21:01:13 +01:00