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-rw-r--r--source/Generating/BioGen.cpp301
-rw-r--r--source/Generating/BioGen.h53
-rw-r--r--source/Generating/ChunkGenerator.cpp5
3 files changed, 359 insertions, 0 deletions
diff --git a/source/Generating/BioGen.cpp b/source/Generating/BioGen.cpp
index eecb63c27..bee0eda87 100644
--- a/source/Generating/BioGen.cpp
+++ b/source/Generating/BioGen.cpp
@@ -5,6 +5,7 @@
#include "Globals.h"
#include "BioGen.h"
+#include "../../iniFile/iniFile.h"
@@ -324,3 +325,303 @@ void cBioGenDistortedVoronoi::Distort(int a_BlockX, int a_BlockZ, int & a_Distor
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// cBioGenMultiStepMap :
+
+cBioGenMultiStepMap::cBioGenMultiStepMap(int a_Seed) :
+ m_Noise(a_Seed),
+ m_Seed(a_Seed),
+ m_OceanCellSize(384),
+ m_MushroomIslandSize(32),
+ m_RiverCellSize(128),
+ m_RiverWidthThreshold((float)0.05),
+ m_LandBiomesSize(192)
+{
+}
+
+
+
+
+
+void cBioGenMultiStepMap::Init(cIniFile & a_IniFile)
+{
+ m_OceanCellSize = a_IniFile.GetValueSetI("Generator", "MultiStepMapOceanCellSize", m_OceanCellSize);
+ m_MushroomIslandSize = a_IniFile.GetValueSetI("Generator", "MultiStepMapMushroomIslandSize", m_MushroomIslandSize);
+ m_RiverCellSize = a_IniFile.GetValueSetI("Generator", "MultiStepMapRiverCellSize", m_RiverCellSize);
+ m_RiverWidthThreshold = (float)a_IniFile.GetValueSetF("Generator", "MultiStepMapRiverWidth", m_RiverWidthThreshold);
+ m_LandBiomesSize = (float)a_IniFile.GetValueSetI("Generator", "MultiStepMapLandBiomeSize", (int)m_LandBiomesSize);
+}
+
+
+
+
+
+void cBioGenMultiStepMap::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
+{
+ DecideOceanLandMushroom(a_ChunkX, a_ChunkZ, a_BiomeMap);
+ AddRivers(a_ChunkX, a_ChunkZ, a_BiomeMap);
+ ApplyTemperatureHumidity(a_ChunkX, a_ChunkZ, a_BiomeMap);
+}
+
+
+
+
+
+void cBioGenMultiStepMap::DecideOceanLandMushroom(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
+{
+ // Distorted Voronoi over 3 biomes, with mushroom having only a special occurence.
+
+ // Prepare a distortion lookup table, by distorting a 5x5 area and using that as 1:4 zoom (linear interpolate):
+ int BaseZ = cChunkDef::Width * a_ChunkZ;
+ int BaseX = cChunkDef::Width * a_ChunkX;
+ int DistortX[cChunkDef::Width + 1][cChunkDef::Width + 1];
+ int DistortZ[cChunkDef::Width + 1][cChunkDef::Width + 1];
+ int DistortSize = m_OceanCellSize / 2;
+ for (int x = 0; x <= 4; x++) for (int z = 0; z <= 4; z++)
+ {
+ Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z], DistortSize);
+ }
+ IntArrayLinearInterpolate2D(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+ IntArrayLinearInterpolate2D(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
+
+ // Prepare a 9x9 area of neighboring cell seeds
+ // (assuming that 7x7 cell area is larger than a chunk being generated)
+ const int NEIGHBORHOOD_SIZE = 4; // How many seeds in each direction to check
+ int CellX = BaseX / m_OceanCellSize;
+ int CellZ = BaseZ / m_OceanCellSize;
+ int SeedX[2 * NEIGHBORHOOD_SIZE + 1][2 * NEIGHBORHOOD_SIZE + 1];
+ int SeedZ[2 * NEIGHBORHOOD_SIZE + 1][2 * NEIGHBORHOOD_SIZE + 1];
+ EMCSBiome SeedV[2 * NEIGHBORHOOD_SIZE + 1][2 * NEIGHBORHOOD_SIZE + 1];
+ for (int xc = 0; xc < 2 * NEIGHBORHOOD_SIZE + 1; xc++)
+ {
+ int RealCellX = xc + CellX - NEIGHBORHOOD_SIZE;
+ int CellBlockX = RealCellX * m_OceanCellSize;
+ for (int zc = 0; zc < 2 * NEIGHBORHOOD_SIZE + 1; zc++)
+ {
+ int RealCellZ = zc + CellZ - NEIGHBORHOOD_SIZE;
+ int CellBlockZ = RealCellZ * m_OceanCellSize;
+ int OffsetX = (m_Noise.IntNoise3DInt(RealCellX, 16 * RealCellX + 32 * RealCellZ, RealCellZ) / 8) % m_OceanCellSize;
+ int OffsetZ = (m_Noise.IntNoise3DInt(RealCellX, 32 * RealCellX - 16 * RealCellZ, RealCellZ) / 8) % m_OceanCellSize;
+ SeedX[xc][zc] = CellBlockX + OffsetX;
+ SeedZ[xc][zc] = CellBlockZ + OffsetZ;
+ SeedV[xc][zc] = (((m_Noise.IntNoise3DInt(RealCellX, RealCellX - RealCellZ + 1000, RealCellZ) / 11) % 256) > 90) ? biOcean : ((EMCSBiome)(-1));
+ } // for z
+ } // for x
+
+ for (int xc = 1; xc < 2 * NEIGHBORHOOD_SIZE; xc++) for (int zc = 1; zc < 2 * NEIGHBORHOOD_SIZE; zc++)
+ {
+ if (
+ (SeedV[xc ][zc] == biOcean) &&
+ (SeedV[xc - 1][zc] == biOcean) &&
+ (SeedV[xc + 1][zc] == biOcean) &&
+ (SeedV[xc ][zc - 1] == biOcean) &&
+ (SeedV[xc ][zc + 1] == biOcean) &&
+ (SeedV[xc - 1][zc - 1] == biOcean) &&
+ (SeedV[xc + 1][zc - 1] == biOcean) &&
+ (SeedV[xc - 1][zc + 1] == biOcean) &&
+ (SeedV[xc + 1][zc + 1] == biOcean)
+ )
+ {
+ SeedV[xc][zc] = biMushroomIsland;
+ }
+ }
+
+ // For each column find the nearest distorted cell and use its value as the biome:
+ int MushroomOceanThreshold = m_OceanCellSize * m_OceanCellSize * m_MushroomIslandSize / 1024;
+ int MushroomShoreThreshold = m_OceanCellSize * m_OceanCellSize * m_MushroomIslandSize / 2048;
+ for (int z = 0; z < cChunkDef::Width; z++)
+ {
+ for (int x = 0; x < cChunkDef::Width; x++)
+ {
+ int AbsoluteZ = DistortZ[x][z];
+ int AbsoluteX = DistortX[x][z];
+ int MinDist = m_OceanCellSize * m_OceanCellSize * 16; // There has to be a cell closer than this
+ EMCSBiome Biome = biPlains;
+ // Find the nearest cell seed:
+ for (int xs = 1; xs < 2 * NEIGHBORHOOD_SIZE; xs++) for (int zs = 1; zs < 2 * NEIGHBORHOOD_SIZE; zs++)
+ {
+ int Dist = (SeedX[xs][zs] - AbsoluteX) * (SeedX[xs][zs] - AbsoluteX) + (SeedZ[xs][zs] - AbsoluteZ) * (SeedZ[xs][zs] - AbsoluteZ);
+ if (Dist >= MinDist)
+ {
+ continue;
+ }
+ MinDist = Dist;
+ Biome = SeedV[xs][zs];
+ // Shrink mushroom biome and add a shore:
+ if (Biome == biMushroomIsland)
+ {
+ if (Dist > MushroomOceanThreshold)
+ {
+ Biome = biOcean;
+ }
+ else if (Dist > MushroomShoreThreshold)
+ {
+ Biome = biMushroomShore;
+ }
+ }
+ } // for zs, xs
+
+ cChunkDef::SetBiome(a_BiomeMap, x, z, Biome);
+ } // for x
+ } // for z
+}
+
+
+
+
+
+void cBioGenMultiStepMap::AddRivers(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
+{
+ for (int z = 0; z < cChunkDef::Width; z++)
+ {
+ float NoiseCoordZ = (float)(a_ChunkZ * cChunkDef::Width + z) / m_RiverCellSize;
+ for (int x = 0; x < cChunkDef::Width; x++)
+ {
+ if (cChunkDef::GetBiome(a_BiomeMap, x, z) != -1)
+ {
+ // Biome already set, skip this column
+ continue;
+ }
+
+ float NoiseCoordX = (float)(a_ChunkX * cChunkDef::Width + x) / m_RiverCellSize;
+
+ double Noise = m_Noise.CubicNoise3D( NoiseCoordX, NoiseCoordZ, 4000);
+ Noise += 0.5 * m_Noise.CubicNoise3D(2 * NoiseCoordX, 2 * NoiseCoordZ, 5000);
+ Noise += 0.1 * m_Noise.CubicNoise3D(8 * NoiseCoordX, 8 * NoiseCoordZ, 6000);
+
+ if ((Noise > 0) && (Noise < m_RiverWidthThreshold))
+ {
+ cChunkDef::SetBiome(a_BiomeMap, x, z, biRiver);
+ }
+ } // for x
+ } // for z
+}
+
+
+
+
+
+void cBioGenMultiStepMap::ApplyTemperatureHumidity(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
+{
+ IntMap TemperatureMap;
+ IntMap HumidityMap;
+ BuildTemperatureHumidityMaps(a_ChunkX, a_ChunkZ, TemperatureMap, HumidityMap);
+
+ FreezeWaterBiomes(a_BiomeMap, TemperatureMap);
+ DecideLandBiomes(a_BiomeMap, TemperatureMap, HumidityMap);
+}
+
+
+
+
+
+void cBioGenMultiStepMap::Distort(int a_BlockX, int a_BlockZ, int & a_DistortedX, int & a_DistortedZ, int a_CellSize)
+{
+ double NoiseX = m_Noise.CubicNoise3D( (float)a_BlockX / a_CellSize, (float)a_BlockZ / a_CellSize, 1000);
+ NoiseX += 0.5 * m_Noise.CubicNoise3D(2 * (float)a_BlockX / a_CellSize, 2 * (float)a_BlockZ / a_CellSize, 2000);
+ NoiseX += 0.1 * m_Noise.CubicNoise3D(16 * (float)a_BlockX / a_CellSize, 16 * (float)a_BlockZ / a_CellSize, 3000);
+ double NoiseZ = m_Noise.CubicNoise3D( (float)a_BlockX / a_CellSize, (float)a_BlockZ / a_CellSize, 4000);
+ NoiseZ += 0.5 * m_Noise.CubicNoise3D(2 * (float)a_BlockX / a_CellSize, 2 * (float)a_BlockZ / a_CellSize, 5000);
+ NoiseZ += 0.1 * m_Noise.CubicNoise3D(16 * (float)a_BlockX / a_CellSize, 16 * (float)a_BlockZ / a_CellSize, 6000);
+
+ a_DistortedX = a_BlockX + (int)(a_CellSize * 0.5 * NoiseX);
+ a_DistortedZ = a_BlockZ + (int)(a_CellSize * 0.5 * NoiseZ);
+}
+
+
+
+
+
+void cBioGenMultiStepMap::BuildTemperatureHumidityMaps(int a_ChunkX, int a_ChunkZ, IntMap & a_TemperatureMap, IntMap & a_HumidityMap)
+{
+ for (int z = 0; z < cChunkDef::Width; z++)
+ {
+ float NoiseCoordZ = (float)(a_ChunkZ * cChunkDef::Width + z) / m_LandBiomesSize;
+ for (int x = 0; x < cChunkDef::Width; x++)
+ {
+ float NoiseCoordX = (float)(a_ChunkX * cChunkDef::Width + x) / m_LandBiomesSize;
+
+ double NoiseT = m_Noise.CubicNoise3D( NoiseCoordX, NoiseCoordZ, 7000);
+ NoiseT += 0.5 * m_Noise.CubicNoise3D(2 * NoiseCoordX, 2 * NoiseCoordZ, 8000);
+ NoiseT += 0.1 * m_Noise.CubicNoise3D(8 * NoiseCoordX, 8 * NoiseCoordZ, 9000);
+ a_TemperatureMap[x + 16 * z] = std::max(0, std::min(255, (int)(128 + NoiseT * 128)));
+
+ double NoiseH = m_Noise.CubicNoise3D( NoiseCoordX, NoiseCoordZ, 9000);
+ NoiseH += 0.5 * m_Noise.CubicNoise3D(2 * NoiseCoordX, 2 * NoiseCoordZ, 5000);
+ NoiseH += 0.1 * m_Noise.CubicNoise3D(8 * NoiseCoordX, 8 * NoiseCoordZ, 1000);
+ a_HumidityMap[x + 16 * z] = std::max(0, std::min(255, (int)(128 + NoiseH * 128)));
+ } // for x
+ } // for z
+}
+
+
+
+
+
+void cBioGenMultiStepMap::DecideLandBiomes(cChunkDef::BiomeMap & a_BiomeMap, const IntMap & a_TemperatureMap, const IntMap & a_HumidityMap)
+{
+ static const EMCSBiome BiomeMap[] =
+ {
+ // 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
+ /* 0 */ biTundra, biTundra, biTundra, biTundra, biPlains, biPlains, biPlains, biPlains, biPlains, biPlains, biDesert, biDesert, biDesert, biDesert, biDesert, biDesert,
+ /* 1 */ biTundra, biTundra, biTundra, biTundra, biPlains, biPlains, biPlains, biPlains, biPlains, biPlains, biDesert, biDesert, biDesert, biDesert, biDesert, biDesert,
+ /* 2 */ biTundra, biTundra, biTundra, biTundra, biPlains, biExtremeHills, biPlains, biPlains, biPlains, biPlains, biDesert, biDesert, biDesertHills, biDesertHills, biDesert, biDesert,
+ /* 3 */ biTundra, biTundra, biTundra, biTundra, biExtremeHills, biExtremeHills, biPlains, biPlains, biPlains, biPlains, biDesert, biDesert, biDesertHills, biDesertHills, biDesert, biDesert,
+ /* 4 */ biTundra, biTundra, biIceMountains, biIceMountains, biExtremeHills, biExtremeHills, biPlains, biPlains, biPlains, biPlains, biForestHills, biForestHills, biExtremeHills, biExtremeHills, biDesertHills, biDesert,
+ /* 5 */ biTundra, biTundra, biIceMountains, biIceMountains, biExtremeHills, biExtremeHills, biPlains, biPlains, biPlains, biPlains, biForestHills, biForestHills, biExtremeHills, biExtremeHills, biDesertHills, biDesert,
+ /* 6 */ biTundra, biTundra, biIceMountains, biIceMountains, biForestHills, biForestHills, biForest, biForest, biForest, biForest, biForest, biForestHills, biExtremeHills, biExtremeHills, biPlains, biPlains,
+ /* 7 */ biTundra, biTundra, biIceMountains, biIceMountains, biForestHills, biForestHills, biForest, biForest, biForest, biForest, biForest, biForestHills, biExtremeHills, biExtremeHills, biPlains, biPlains,
+ /* 8 */ biTundra, biTundra, biTaiga, biTaiga, biForest, biForest, biForest, biForest, biForest, biForest, biForest, biForestHills, biExtremeHills, biExtremeHills, biPlains, biPlains,
+ /* 9 */ biTundra, biTundra, biTaiga, biTaiga, biForest, biForest, biForest, biForest, biForest, biForest, biForest, biForestHills, biExtremeHills, biExtremeHills, biPlains, biPlains,
+ /* 10 */ biTaiga, biTaiga, biTaiga, biIceMountains, biForestHills, biForestHills, biForest, biForest, biForest, biForest, biJungle, biJungle, biSwampland, biSwampland, biSwampland, biSwampland,
+ /* 11 */ biTaiga, biTaiga, biIceMountains, biIceMountains, biExtremeHills, biForestHills, biForest, biForest, biForest, biForest, biJungle, biJungle, biSwampland, biSwampland, biSwampland, biSwampland,
+ /* 12 */ biTaiga, biTaiga, biIceMountains, biIceMountains, biExtremeHills, biJungleHills, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biSwampland, biSwampland, biSwampland, biSwampland,
+ /* 13 */ biTaiga, biTaiga, biTaiga, biIceMountains, biJungleHills, biJungleHills, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biSwampland, biSwampland, biSwampland, biSwampland,
+ /* 14 */ biTaiga, biTaiga, biTaiga, biTaiga, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biSwampland, biSwampland, biSwampland, biSwampland,
+ /* 15 */ biTaiga, biTaiga, biTaiga, biTaiga, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biJungle, biSwampland, biSwampland, biSwampland, biSwampland,
+ } ;
+ for (int z = 0; z < cChunkDef::Width; z++)
+ {
+ for (int x = 0; x < cChunkDef::Width; x++)
+ {
+ if (cChunkDef::GetBiome(a_BiomeMap, x, z) != -1)
+ {
+ // Already set before
+ continue;
+ }
+ int idx = x + 16 * z;
+ int Temperature = a_TemperatureMap[idx] / 16; // -> [0..15] range
+ int Humidity = a_HumidityMap[idx] / 16; // -> [0..15] range
+ cChunkDef::SetBiome(a_BiomeMap, x, z, BiomeMap[Temperature + 16 * Humidity]);
+ } // for x
+ } // for z
+}
+
+
+
+
+
+void cBioGenMultiStepMap::FreezeWaterBiomes(cChunkDef::BiomeMap & a_BiomeMap, const IntMap & a_TemperatureMap)
+{
+ int idx = 0;
+ for (int z = 0; z < cChunkDef::Width; z++)
+ {
+ for (int x = 0; x < cChunkDef::Width; x++, idx++)
+ {
+ if (a_TemperatureMap[idx] > 4 * 16)
+ {
+ // Not frozen
+ continue;
+ }
+ switch (cChunkDef::GetBiome(a_BiomeMap, x, z))
+ {
+ case biRiver: cChunkDef::SetBiome(a_BiomeMap, x, z, biFrozenRiver); break;
+ case biOcean: cChunkDef::SetBiome(a_BiomeMap, x, z, biFrozenOcean); break;
+ }
+ } // for x
+ } // for z
+}
+
+
+
+
diff --git a/source/Generating/BioGen.h b/source/Generating/BioGen.h
index 6faca09c1..307009a2b 100644
--- a/source/Generating/BioGen.h
+++ b/source/Generating/BioGen.h
@@ -170,3 +170,56 @@ protected:
+class cBioGenMultiStepMap :
+ public cBiomeGen
+{
+public:
+ cBioGenMultiStepMap(int a_Seed);
+
+ void Init(cIniFile & a_IniFile);
+
+protected:
+ cNoise m_Noise;
+ int m_Seed;
+ int m_OceanCellSize;
+ int m_MushroomIslandSize;
+ int m_RiverCellSize;
+ float m_RiverWidthThreshold;
+ float m_LandBiomesSize;
+
+ typedef int IntMap[256]; // x + 16 * z, expected trimmed into [0..255] range
+
+ // cBiomeGen override:
+ virtual void GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) override;
+
+ /** Step 1: Decides between ocean, land and mushroom, using a DistVoronoi with special conditions and post-processing for mushroom islands
+ Sets biomes to biOcean, -1 (i.e. land), biMushroomIsland or biMushroomShore
+ */
+ void DecideOceanLandMushroom(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap);
+
+ /** Step 2: Add rivers to the land
+ Flips some "-1" biomes into biRiver
+ */
+ void AddRivers(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap);
+
+ /** Step 3: Decide land biomes, using Distorted Voronoi and a temperature / humidity map and freezes ocean / river in low temperatures.
+ Flips all remaining "-1" biomes into land biomes. Also flips some biOcean and biRiver into biFrozenOcean, biFrozenRiver, based on temp map.
+ */
+ void ApplyTemperatureHumidity(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap);
+
+ /// Distorts the coords using a Perlin-like noise, with a specified cell-size
+ void Distort(int a_BlockX, int a_BlockZ, int & a_DistortedX, int & a_DistortedZ, int a_CellSize);
+
+ /// Builds two Perlin-noise maps, one for temperature, the other for humidity. Trims both into [0..255] range
+ void BuildTemperatureHumidityMaps(int a_ChunkX, int a_ChunkZ, IntMap & a_TemperatureMap, IntMap & a_HumidityMap);
+
+ /// Flips all remaining "-1" biomes into land biomes using the two maps
+ void DecideLandBiomes(cChunkDef::BiomeMap & a_BiomeMap, const IntMap & a_TemperatureMap, const IntMap & a_HumidityMap);
+
+ /// Flips biOcean and biRiver into biFrozenOcean and biFrozenRiver if the temperature is too low
+ void FreezeWaterBiomes(cChunkDef::BiomeMap & a_BiomeMap, const IntMap & a_TemperatureMap);
+} ;
+
+
+
+
diff --git a/source/Generating/ChunkGenerator.cpp b/source/Generating/ChunkGenerator.cpp
index c6975ae0d..8af4f7be7 100644
--- a/source/Generating/ChunkGenerator.cpp
+++ b/source/Generating/ChunkGenerator.cpp
@@ -156,6 +156,11 @@ void cChunkGenerator::InitBiomeGen(cIniFile & a_IniFile)
AString Biomes = a_IniFile.GetValueSet ("Generator", "VoronoiBiomes", "");
m_BiomeGen = new cBioGenVoronoi(m_Seed, CellSize, Biomes);
}
+ else if (NoCaseCompare(BiomeGenName, "multistepmap") == 0)
+ {
+ m_BiomeGen = new cBioGenMultiStepMap(m_Seed);
+ ((cBioGenMultiStepMap *)m_BiomeGen)->Init(a_IniFile);
+ }
else
{
if (NoCaseCompare(BiomeGenName, "distortedvoronoi") != 0)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-01 08:42:19 +0100