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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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3
src/mapgen/mapgen.h
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@ -36,6 +36,7 @@ with this program; if not, write to the Free Software Foundation, Inc.,
#define MG_FLAT 0x08 // Deprecated. Moved into mgv6 flags
#define MG_LIGHT 0x10
#define MG_DECORATIONS 0x20
#define MG_BIOMES 0x40
typedef u8 biome_t; // copy from mg_biome.h to avoid an unnecessary include
@ -122,7 +123,7 @@ struct MapgenParams {
u64 seed = 0;
s16 water_level = 1;
s16 mapgen_limit = MAX_MAP_GENERATION_LIMIT;
u32 flags = MG_CAVES | MG_LIGHT | MG_DECORATIONS;
u32 flags = MG_CAVES | MG_LIGHT | MG_DECORATIONS | MG_BIOMES;
BiomeParams *bparams = nullptr;