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- SW: cleaned up SlopeBounce and fixed some bad math.

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This commit is contained in:
Christoph Oelckers 2023-01-07 12:23:29 +01:00
parent 2e35d6a6a8
commit ae6af08cf1
1 changed files with 8 additions and 22 deletions
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30
source/games/sw/src/weapon.cpp
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@ -8287,7 +8287,7 @@ void WallBounce(DSWActor* actor, DAngle ang)
bool SlopeBounce(DSWActor* actor, bool* hit_wall)
{
double hiz, loz;
int slope;
double slope;
auto hit_sector = actor->user.coll.hitSector;
@ -8299,48 +8299,34 @@ bool SlopeBounce(DSWActor* actor, bool* hit_wall)
if (!(hit_sector->ceilingstat & CSTAT_SECTOR_SLOPE))
slope = 0;
else
slope = hit_sector->ceilingheinum;
slope = hit_sector->ceilingheinum / SLOPEVAL_FACTOR;
}
else
{
if (!(hit_sector->floorstat & CSTAT_SECTOR_SLOPE))
slope = 0;
else
slope = hit_sector->floorheinum;
slope = hit_sector->floorheinum / SLOPEVAL_FACTOR;
}
if (!slope)
return false;
// if greater than a 45 degree angle
if (abs(slope) > SLOPEVAL_FACTOR)
*hit_wall = true;
else
*hit_wall = false;
*hit_wall = (abs(slope) > 1);
// get angle of the first wall of the sector
auto wallp = hit_sector->walls.Data();
DAngle daang = wallp->delta().Angle();
auto angle = wallp->delta().Angle();
// k is now the slope of the ceiling or floor
// normal vector of the slope
double dax = slope * daang.Sin();
double day = slope * -daang.Cos();
double daz = 256; // 4096/256 = 45 degrees
DVector3 normal(slope * angle.Sin(), slope * -angle.Cos(), 1);
// reflection code
double k = actor->user.change.X * dax + actor->user.change.Y * day + actor->user.change.Z * daz;
double l = (dax * dax) + (day * day) + (daz * daz);
k /= l;
actor->user.change.X = dax * k;
actor->user.change.Y = day * k;
actor->user.change.Z = daz * k * 16;
SetAngleFromChange(actor);
double k = actor->user.change.dot(normal) / normal.LengthSquared();
actor->user.change -= k * normal;
return true;
}