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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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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 44 additions and 20 deletions
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9
src/mapgen/mapgen_flat.cpp
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@ -195,8 +195,10 @@ void MapgenFlat::makeChunk(BlockMakeData *data)
updateHeightmap(node_min, node_max);
// Init biome generator, place biome-specific nodes, and build biomemap
biomegen->calcBiomeNoise(node_min);
generateBiomes();
if (flags & MG_BIOMES) {
biomegen->calcBiomeNoise(node_min);
generateBiomes();
}
if (flags & MG_CAVES) {
// Generate tunnels
@ -217,7 +219,8 @@ void MapgenFlat::makeChunk(BlockMakeData *data)
m_emerge->oremgr->placeAllOres(this, blockseed, node_min, node_max);
// Sprinkle some dust on top after everything else was generated
dustTopNodes();
if (flags & MG_BIOMES)
dustTopNodes();
//printf("makeChunk: %dms\n", t.stop());