From 0b23253447623cadf1c394984ce0eee977d54b9b Mon Sep 17 00:00:00 2001 From: Paramat Date: Fri, 8 Jun 2018 23:24:36 +0100 Subject: [PATCH] Mapgen flags: Add 'biomes' global mapgen flag (#7355) 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. --- builtin/settingtypes.txt | 2 +- src/mapgen/mapgen.cpp | 3 ++- src/mapgen/mapgen.h | 3 ++- src/mapgen/mapgen_carpathian.cpp | 9 ++++++--- src/mapgen/mapgen_flat.cpp | 9 ++++++--- src/mapgen/mapgen_fractal.cpp | 9 ++++++--- src/mapgen/mapgen_v5.cpp | 9 ++++++--- src/mapgen/mapgen_v7.cpp | 9 ++++++--- src/mapgen/mapgen_valleys.cpp | 6 ++++-- src/mapgen/mg_biome.cpp | 5 +++++ 10 files changed, 44 insertions(+), 20 deletions(-) diff --git a/builtin/settingtypes.txt b/builtin/settingtypes.txt index 8e42fe29a..653ca0e2f 100644 --- a/builtin/settingtypes.txt +++ b/builtin/settingtypes.txt @@ -1282,7 +1282,7 @@ mapgen_limit (Map generation limit) int 31000 0 31000 # and junglegrass, in all other mapgens this flag controls all decorations. # Flags that are not enabled are not modified from the default. # Flags starting with 'no' are used to explicitly disable them. -mg_flags (Mapgen flags) flags caves,dungeons,light,decorations caves,dungeons,light,decorations,nocaves,nodungeons,nolight,nodecorations +mg_flags (Mapgen flags) flags caves,dungeons,light,decorations,biomes caves,dungeons,light,decorations,biomes,nocaves,nodungeons,nolight,nodecorations,nobiomes # Whether dungeons occasionally project from the terrain. projecting_dungeons (Projecting dungeons) bool true diff --git a/src/mapgen/mapgen.cpp b/src/mapgen/mapgen.cpp index dcdaf82c2..360afd897 100644 --- a/src/mapgen/mapgen.cpp +++ b/src/mapgen/mapgen.cpp @@ -56,7 +56,8 @@ FlagDesc flagdesc_mapgen[] = { {"dungeons", MG_DUNGEONS}, {"light", MG_LIGHT}, {"decorations", MG_DECORATIONS}, - {NULL, 0} + {"biomes", MG_BIOMES}, + {NULL, 0} }; FlagDesc flagdesc_gennotify[] = { diff --git a/src/mapgen/mapgen.h b/src/mapgen/mapgen.h index abac79016..b60aea57e 100644 --- a/src/mapgen/mapgen.h +++ b/src/mapgen/mapgen.h @@ -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; diff --git a/src/mapgen/mapgen_carpathian.cpp b/src/mapgen/mapgen_carpathian.cpp index 4347f8479..c1e07030c 100644 --- a/src/mapgen/mapgen_carpathian.cpp +++ b/src/mapgen/mapgen_carpathian.cpp @@ -247,8 +247,10 @@ void MapgenCarpathian::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(); + } // Generate tunnels, caverns and large randomwalk caves if (flags & MG_CAVES) { @@ -284,7 +286,8 @@ void MapgenCarpathian::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(); // Update liquids updateLiquid(&data->transforming_liquid, full_node_min, full_node_max); diff --git a/src/mapgen/mapgen_flat.cpp b/src/mapgen/mapgen_flat.cpp index dbe0bd5bb..e2bc42918 100644 --- a/src/mapgen/mapgen_flat.cpp +++ b/src/mapgen/mapgen_flat.cpp @@ -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()); diff --git a/src/mapgen/mapgen_fractal.cpp b/src/mapgen/mapgen_fractal.cpp index a1d425cd0..b915cd8f9 100644 --- a/src/mapgen/mapgen_fractal.cpp +++ b/src/mapgen/mapgen_fractal.cpp @@ -206,8 +206,10 @@ void MapgenFractal::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 @@ -228,7 +230,8 @@ void MapgenFractal::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()); diff --git a/src/mapgen/mapgen_v5.cpp b/src/mapgen/mapgen_v5.cpp index fc0970363..3be704cca 100644 --- a/src/mapgen/mapgen_v5.cpp +++ b/src/mapgen/mapgen_v5.cpp @@ -206,8 +206,10 @@ void MapgenV5::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(); + } // Generate tunnels, caverns and large randomwalk caves if (flags & MG_CAVES) { @@ -243,7 +245,8 @@ void MapgenV5::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()); diff --git a/src/mapgen/mapgen_v7.cpp b/src/mapgen/mapgen_v7.cpp index 610de4623..e266e29c8 100644 --- a/src/mapgen/mapgen_v7.cpp +++ b/src/mapgen/mapgen_v7.cpp @@ -326,8 +326,10 @@ void MapgenV7::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(); + } // Generate tunnels, caverns and large randomwalk caves if (flags & MG_CAVES) { @@ -363,7 +365,8 @@ void MapgenV7::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(); // Update liquids updateLiquid(&data->transforming_liquid, full_node_min, full_node_max); diff --git a/src/mapgen/mapgen_valleys.cpp b/src/mapgen/mapgen_valleys.cpp index 843acb690..341ce3137 100644 --- a/src/mapgen/mapgen_valleys.cpp +++ b/src/mapgen/mapgen_valleys.cpp @@ -231,7 +231,8 @@ void MapgenValleys::makeChunk(BlockMakeData *data) updateHeightmap(node_min, node_max); // Place biome-specific nodes and build biomemap - generateBiomes(); + if (flags & MG_BIOMES) + generateBiomes(); // Generate tunnels, caverns and large randomwalk caves if (flags & MG_CAVES) { @@ -265,7 +266,8 @@ void MapgenValleys::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(); updateLiquid(&data->transforming_liquid, full_node_min, full_node_max); diff --git a/src/mapgen/mg_biome.cpp b/src/mapgen/mg_biome.cpp index 42f762709..e02eee703 100644 --- a/src/mapgen/mg_biome.cpp +++ b/src/mapgen/mg_biome.cpp @@ -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() -- 2.25.1