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Mapgen flags: Add 'biomes' global mapgen flag (#7355)

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Previously the only way to disable biomes was to 'clear' the registered
biomes in a mod, but this method causes large amounts of unnecessary
processing:
1. Calculation of 4 2D noises.
2. Looping through all nodes of a mapchunk replacing nodes with identical
nodes.
The new flag disables those operations.
This commit is contained in:
Paramat 2018-06-08 23:24:36 +01:00 • committed by GitHub
parent 9ca37d86a3
commit 0b23253447
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10 changed files with 44 additions and 20 deletions
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5
src/mapgen/mg_biome.cpp
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@ -192,7 +192,12 @@ BiomeGenOriginal::BiomeGenOriginal(BiomeManager *biomemgr,
heatmap = noise_heat->result;
humidmap = noise_humidity->result;
biomemap = new biome_t[m_csize.X * m_csize.Z];
// Initialise with the ID of the default biome so that cavegen can get
// biomes when biome generation (which calculates the biomemap IDs) is
// disabled.
memset(biomemap, 0, sizeof(biome_t) * m_csize.X * m_csize.Z);
}
BiomeGenOriginal::~BiomeGenOriginal()