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- added a fix from GZDoom to handle levels with compressed sidedefs that were processed by older ZDBSPs.

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SVN r2612 (trunk)
This commit is contained in:
Christoph Oelckers 2010-08-27 16:53:11 +00:00
parent 2152bc88d6
commit 3afa8149de
1 changed files with 22 additions and 0 deletions
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22
src/p_setup.cpp
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@ -3830,6 +3830,28 @@ void P_SetupLevel (char *lumpname, int position)
DPrintf ("BSP generation took %.3f sec (%d segs)\n", (endTime - startTime) * 0.001, numsegs);
reloop = true;
}
else
{
// Older ZDBSPs had problems with compressed sidedefs and assigned wrong sides to the segs if both sides were the same sidedef.
for(i=0;i<numsegs;i++)
{
seg_t * seg=&segs[i];
if (seg->backsector == seg->frontsector && seg->linedef)
{
fixed_t d1=P_AproxDistance(seg->v1->x-seg->linedef->v1->x,seg->v1->y-seg->linedef->v1->y);
fixed_t d2=P_AproxDistance(seg->v2->x-seg->linedef->v1->x,seg->v2->y-seg->linedef->v1->y);
if (d2<d1) // backside
{
seg->sidedef = seg->linedef->sidedef[1];
}
else // front side
{
seg->sidedef = seg->linedef->sidedef[0];
}
}
}
}
// Copy pointers to the old nodes so that R_PointInSubsector can use them
if (nodes && subsectors)