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- let Trace() be a bit smarter about checking 3D slopes. If one matches right up with the floor or ceiling at the line where the trace enters a sector, check a second point to see whether we deal with something inside valid sector bounds or not.

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This commit is contained in:
Christoph Oelckers 2016-05-01 19:30:51 +02:00
parent 3aee8a3eee
commit b443ac8f71
1 changed files with 22 additions and 0 deletions
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22
src/p_trace.cpp
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@ -494,6 +494,17 @@ bool FTraceInfo::LineCheck(intercept_t *in, double dist, DVector3 hit)
// clip to the part of the sector we are in // clip to the part of the sector we are in
if (hit.Z > ff_top) if (hit.Z > ff_top)
{ {
// 3D floor height is the same as the floor height. We need to test a second spot to see if it is above or below
if (fabs(bf - ff_top) < EQUAL_EPSILON)
{
double cf = entersector->floorplane.ZatPoint(entersector->centerspot);
double ffc = rover->top.plane->ZatPoint(entersector->centerspot);
if (ffc > cf)
{
bf = ff_top - EQUAL_EPSILON;
}
}
// above // above
if (bf < ff_top) if (bf < ff_top)
{ {
@ -505,6 +516,17 @@ bool FTraceInfo::LineCheck(intercept_t *in, double dist, DVector3 hit)
} }
else if (hit.Z < ff_bottom) else if (hit.Z < ff_bottom)
{ {
// 3D floor height is the same as the ceiling height. We need to test a second spot to see if it is above or below
if (fabs(bc - ff_bottom) < EQUAL_EPSILON)
{
double cc = entersector->ceilingplane.ZatPoint(entersector->centerspot);
double fcc = rover->bottom.plane->ZatPoint(entersector->centerspot);
if (fcc < cc)
{
bc = ff_bottom + EQUAL_EPSILON;
}
}
//below //below
if (bc > ff_bottom) if (bc > ff_bottom)
{ {