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Mapgen: Fix light in tunnels at mapchunk borders

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Don't excavate the overgenerated stone at node_max.Y + 1,
this creates a 'roof' over the tunnel, preventing light in
tunnels at mapchunk borders when generating mapchunks upwards.
This commit is contained in:
paramat
2016-03-13 07:56:27 +00:00
parent c0b6986e38
commit bb2ee54d3b
5 changed files with 30 additions and 0 deletions
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6
src/mapgen_fractal.cpp
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@@ -701,6 +701,12 @@ void MapgenFractal::generateCaves(s16 max_stone_y)
for (s16 y = node_max.Y + 1; y >= node_min.Y - 1;
y--, index3d -= ystride, vm->m_area.add_y(em, vi, -1)) {
// Don't excavate the overgenerated stone at node_max.Y + 1,
// this creates a 'roof' over the tunnel, preventing light in
// tunnels at mapchunk borders when generating mapchunks upwards.
if (y > node_max.Y)
continue;
content_t c = vm->m_data[vi].getContent();
if (c == CONTENT_AIR || c == biome->c_water_top ||
c == biome->c_water) {