diff options
Diffstat (limited to 'source/Generating/BioGen.cpp')
| -rw-r--r-- | source/Generating/BioGen.cpp | 301 |
1 files changed, 301 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 +} + + + + |