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copy ZDoom solution exactly (#1568)

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Fixes SSG room in DOOM2.WAD MAP02
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Roman Fomin 2024-03-07 15:19:48 +07:00 committed by GitHub
parent 5a4a47bed3
commit fd24d9cb75
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GPG Key ID: B5690EEEBB952194
1 changed files with 12 additions and 4 deletions
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16
src/p_maputl.c
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@ -1335,8 +1335,13 @@ boolean P_SightPathTraverse(fixed_t x1, fixed_t y1, fixed_t x2, fixed_t y2)
// [RH] Handle corner cases properly instead of pretending they don't
// exist.
// neither xintercept nor yintercept match!
if ((xintercept >> FRACBITS) != mapx && (yintercept >> FRACBITS) != mapy)
{
count = 64; // Stop traversing, because somebody screwed up.
}
// xintercept and yintercept both match
if ((xintercept >> FRACBITS) == mapx && (yintercept >> FRACBITS) == mapy)
else if ((xintercept >> FRACBITS) == mapx && (yintercept >> FRACBITS) == mapy)
{
// The trace is exiting a block through its corner. Not only does the
// block being entered need to be checked (which will happen when this
@ -1348,14 +1353,17 @@ boolean P_SightPathTraverse(fixed_t x1, fixed_t y1, fixed_t x2, fixed_t y2)
{
return false;
}
xintercept += xstep;
yintercept += ystep;
mapx += mapxstep;
mapy += mapystep;
}
if ((yintercept >> FRACBITS) == mapy)
else if ((yintercept >> FRACBITS) == mapy)
{
yintercept += ystep;
mapx += mapxstep;
}
if ((xintercept >> FRACBITS) == mapx)
else if ((xintercept >> FRACBITS) == mapx)
{
xintercept += xstep;
mapy += mapystep;