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- gross hack to simulate the original bad precision of Blood's ClipMove.

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This commit is contained in:
Christoph Oelckers 2022-10-10 19:07:43 +02:00
parent b45c95eec5
commit c9bcfff654
1 changed files with 7 additions and 1 deletions
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8
source/games/blood/src/gameutil.h
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@ -72,7 +72,13 @@ inline void ClipMove(DVector3& pos, sectortype** pSector, const DVector2& vect,
{
// this uses floats only partially.
vec3_t ipos = { int(pos.X * worldtoint), int(pos.Y * worldtoint), int(pos.Z * zworldtoint)};
ClipMove(ipos, pSector, int(vect.X * worldtoint), int(vect.Y * worldtoint), wd, int(cd * zworldtoint), int(fd * zworldtoint), nMask, hit, tracecount);
// Due to the low precision of original Build coordinates this code is susceptible to shifts from negative values being off by one,
// so we have to replicate the imprecision here. Gross...
DVector2 vel;
vel.X = (FloatToFixed(vect.X) >> 12) / 16.;
vel.Y = (FloatToFixed(vect.Y) >> 12) / 16.;
ClipMove(ipos, pSector, int(vel.X * worldtoint), int(vel.Y * worldtoint), wd, int(cd * zworldtoint), int(fd * zworldtoint), nMask, hit, tracecount);
pos = { ipos.X * inttoworld, ipos.Y * inttoworld, ipos.Z * zinttoworld };
}
BitArray GetClosestSpriteSectors(sectortype* pSector, const DVector2& pos, int nDist, TArray<walltype*>* pWalls, bool newSectCheckMethod = false);