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Mapgen: Don't spread light of nodes outside the desired area

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This fixes #3935, a regression from 0338c2e.
An 'optimization' was performed where an index for the VoxelManip being
operated on was mistakenly used for bounds checking within the incorrect
VoxelArea, namely, the area wherein light should be spread.
This commit is contained in:
kwolekr 2016-03-29 23:59:39 -04:00
parent 597c1d73da
commit 0115da1d63
1 changed files with 1 additions and 4 deletions
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src/mapgen.cpp
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@ -242,13 +242,10 @@ void Mapgen::setLighting(u8 light, v3s16 nmin, v3s16 nmax)
void Mapgen::lightSpread(VoxelArea &a, v3s16 p, u8 light)
{
if (light <= 1)
if (light <= 1 || !a.contains(p))
return;
u32 vi = vm->m_area.index(p);
if (!a.contains(vi))
return;
MapNode &n = vm->m_data[vi];
// Decay light in each of the banks separately