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

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.
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kwolekr committed Mar 30, 2016
1 parent 597c1d7 commit 0115da1d6348a08388238d8728daaa048a603522
Showing with 1 addition and 4 deletions.
  1. +1 −4 src/mapgen.cpp
@@ -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))

u32 vi = vm->m_area.index(p);
if (!a.contains(vi))

MapNode &n = vm->m_data[vi];

// Decay light in each of the banks separately

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