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fix crash when loading trivial single subsector maps

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Fixes #17
This commit is contained in:
Fabian Greffrath 2020-01-09 17:34:58 +01:00
parent 0084c53cb9
commit edff9efc98
1 changed files with 7 additions and 0 deletions
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7
Source/r_main.c
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@ -431,6 +431,13 @@ void R_Init (void)
subsector_t *R_PointInSubsector(fixed_t x, fixed_t y) subsector_t *R_PointInSubsector(fixed_t x, fixed_t y)
{ {
int nodenum = numnodes-1; int nodenum = numnodes-1;
// [FG] fix crash when loading trivial single subsector maps
if (!numnodes)
{
return subsectors;
}
while (!(nodenum & NF_SUBSECTOR)) while (!(nodenum & NF_SUBSECTOR))
nodenum = nodes[nodenum].children[R_PointOnSide(x, y, nodes+nodenum)]; nodenum = nodes[nodenum].children[R_PointOnSide(x, y, nodes+nodenum)];
return &subsectors[nodenum & ~NF_SUBSECTOR]; return &subsectors[nodenum & ~NF_SUBSECTOR];