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- use .dot() for calculating slopes

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This commit is contained in:
Christoph Oelckers 2022-10-04 18:49:23 +02:00
parent e83d0930bf
commit 02f1f79333
1 changed files with 2 additions and 1 deletions
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3
source/core/gamefuncs.cpp
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@ -142,7 +142,8 @@ void calcSlope(const sectortype* sec, double xpos, double ypos, double* pceilz,
double len = wal->Length();
if (len != 0)
{
double fac = (wal->delta().X * (ypos - wal->pos.Y) - wal->delta().Y * (xpos - wal->pos.X)) / len * (1. / SLOPEVAL_FACTOR);
DVector2 wd = DVector2(xpos, ypos) - wal->pos;
double fac = wal->delta().dot(wd.Rotated90CW()) / len * (1. / SLOPEVAL_FACTOR);
if (pceilz && sec->ceilingstat & CSTAT_SECTOR_SLOPE) *pceilz += (sec->ceilingheinum * fac);
if (pflorz && sec->floorstat & CSTAT_SECTOR_SLOPE) *pflorz += (sec->floorheinum * fac);
}