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ReC98/th04/math/vector.cpp

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[Maintenance] Remove the SHARED_ segment and all related workarounds Part of P0265, funded by [Anonymous] and iruleatgames.
2024-01-24 09:18:02 +00:00
#pragma option -zCSHARED
[Decompilation] [th05] Lasers: 2D vector construction More custom code generation! Part of P0228, funded by [Anonymous] and nrook.
2022-12-26 02:41:18 +00:00
#include "th01/math/polar.hpp"
[Naming] Rename vector1_at() to polar() "1D polar vectors" are a weird concept to wrap your head around, especially if their constructor function takes a sine or cosine ratio instead of an angle. This function is way closer to the polar_*() family, which has these convenient `_x` and _y` suffixes that we could just remove for this generic function to fit into there. Part of P0244, funded by Blue Bolt and [Anonymous].
2023-06-08 15:55:57 +00:00
#include "th03/math/polar.hpp"
[Decompilation] [th04/th05] vector1_at(), vector2_at() Almost undecompilable, until you remember that you can inhibit the optimization of keeping a function parameter in a register by having an `inline` function take a reference. Yet another function that wouldn't have decompiled that nicely if we had restricted us to C… Part of P0136, funded by [Anonymous].
2021-03-01 14:50:43 +00:00
#include "th04/math/vector.hpp"
[Naming] Rename vector1_at() to polar() "1D polar vectors" are a weird concept to wrap your head around, especially if their constructor function takes a sine or cosine ratio instead of an angle. This function is way closer to the polar_*() family, which has these convenient `_x` and _y` suffixes that we could just remove for this generic function to fit into there. Part of P0244, funded by Blue Bolt and [Anonymous].
2023-06-08 15:55:57 +00:00
int pascal polar(int center, int radius, int ratio)
[Decompilation] [th04/th05] vector1_at(), vector2_at() Almost undecompilable, until you remember that you can inhibit the optimization of keeping a function parameter in a register by having an `inline` function take a reference. Yet another function that wouldn't have decompiled that nicely if we had restricted us to C… Part of P0136, funded by [Anonymous].
2021-03-01 14:50:43 +00:00
{
[Naming] Rename vector1_at() to polar() "1D polar vectors" are a weird concept to wrap your head around, especially if their constructor function takes a sine or cosine ratio instead of an angle. This function is way closer to the polar_*() family, which has these convenient `_x` and _y` suffixes that we could just remove for this generic function to fit into there. Part of P0244, funded by Blue Bolt and [Anonymous].
2023-06-08 15:55:57 +00:00
return (((static_cast<long>(radius) * ratio) >> 8) + center);
[Decompilation] [th04/th05] vector1_at(), vector2_at() Almost undecompilable, until you remember that you can inhibit the optimization of keeping a function parameter in a register by having an `inline` function take a reference. Yet another function that wouldn't have decompiled that nicely if we had restricted us to C… Part of P0136, funded by [Anonymous].
2021-03-01 14:50:43 +00:00
}
[Maintenance] Move `extern "C"` into the headers it applies to The translation units were probably a better place back when most of the codebase was still compiled in C mode, we only had a few C++ TUs, almost everything needed to be declared as `extern "C"`, and moving these declarations into the headers would have been really noisy with all the `#ifdef __cplusplus` / `#endif` required. Nowadays though, we've greatly reduced that surface area. And given that headers will include even more headers as part of the upcoming `#include` cleanup, it makes sense to make the jump now. Part of P0284, funded by [Anonymous] and Blue Bolt.
2024-05-26 17:39:06 +00:00
void pascal vector2_at(
[Decompilation] [th04/th05] vector1_at(), vector2_at() Almost undecompilable, until you remember that you can inhibit the optimization of keeping a function parameter in a register by having an `inline` function take a reference. Yet another function that wouldn't have decompiled that nicely if we had restricted us to C… Part of P0136, funded by [Anonymous].
2021-03-01 14:50:43 +00:00
SPPoint near &ret,
subpixel_t origin_x,
subpixel_t origin_y,
subpixel_t length,
int angle
)
{
_BX = angle;
#if (GAME == 5)
_BH ^= _BH;
#endif
_BX += _BX; // *= sizeof(short)
ret.x.v = polar_x_fast_unsafe(origin_x, length, _BX);
ret.y.v = polar_y_fast_unsafe(origin_y, length, _BX);
}