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Diffstat (limited to 'src/Generating/BioGen.cpp')
| -rw-r--r-- | src/Generating/BioGen.cpp | 707 |
1 files changed, 707 insertions, 0 deletions
diff --git a/src/Generating/BioGen.cpp b/src/Generating/BioGen.cpp new file mode 100644 index 000000000..926120afc --- /dev/null +++ b/src/Generating/BioGen.cpp @@ -0,0 +1,707 @@ + +// BioGen.cpp + +// Implements the various biome generators + +#include "Globals.h" +#include "BioGen.h" +#include "../../iniFile/iniFile.h" +#include "../LinearUpscale.h" + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cBioGenConstant: + +void cBioGenConstant::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) +{ + for (int i = 0; i < ARRAYCOUNT(a_BiomeMap); i++) + { + a_BiomeMap[i] = m_Biome; + } +} + + + + + +void cBioGenConstant::InitializeBiomeGen(cIniFile & a_IniFile) +{ + AString Biome = a_IniFile.GetValueSet("Generator", "ConstantBiome", "Plains"); + m_Biome = StringToBiome(Biome); + if (m_Biome == -1) + { + LOGWARN("[Generator]::ConstantBiome value \"%s\" not recognized, using \"Plains\".", Biome.c_str()); + m_Biome = biPlains; + } +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cBioGenCache: + +cBioGenCache::cBioGenCache(cBiomeGen * a_BioGenToCache, int a_CacheSize) : + m_BioGenToCache(a_BioGenToCache), + m_CacheSize(a_CacheSize), + m_CacheOrder(new int[a_CacheSize]), + m_CacheData(new sCacheData[a_CacheSize]), + m_NumHits(0), + m_NumMisses(0), + m_TotalChain(0) +{ + for (int i = 0; i < m_CacheSize; i++) + { + m_CacheOrder[i] = i; + m_CacheData[i].m_ChunkX = 0x7fffffff; + m_CacheData[i].m_ChunkZ = 0x7fffffff; + } +} + + + + + +cBioGenCache::~cBioGenCache() +{ + delete[] m_CacheData; + delete[] m_CacheOrder; +} + + + + + +void cBioGenCache::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) +{ + if (((m_NumHits + m_NumMisses) % 1024) == 10) + { + LOGD("BioGenCache: %d hits, %d misses, saved %.2f %%", m_NumHits, m_NumMisses, 100.0 * m_NumHits / (m_NumHits + m_NumMisses)); + LOGD("BioGenCache: Avg cache chain length: %.2f", (float)m_TotalChain / m_NumHits); + } + + for (int i = 0; i < m_CacheSize; i++) + { + if ( + (m_CacheData[m_CacheOrder[i]].m_ChunkX != a_ChunkX) || + (m_CacheData[m_CacheOrder[i]].m_ChunkZ != a_ChunkZ) + ) + { + continue; + } + // Found it in the cache + int Idx = m_CacheOrder[i]; + + // Move to front: + for (int j = i; j > 0; j--) + { + m_CacheOrder[j] = m_CacheOrder[j - 1]; + } + m_CacheOrder[0] = Idx; + + // Use the cached data: + memcpy(a_BiomeMap, m_CacheData[Idx].m_BiomeMap, sizeof(a_BiomeMap)); + + m_NumHits++; + m_TotalChain += i; + return; + } // for i - cache + + // Not in the cache: + m_NumMisses++; + m_BioGenToCache->GenBiomes(a_ChunkX, a_ChunkZ, a_BiomeMap); + + // Insert it as the first item in the MRU order: + int Idx = m_CacheOrder[m_CacheSize - 1]; + for (int i = m_CacheSize - 1; i > 0; i--) + { + m_CacheOrder[i] = m_CacheOrder[i - 1]; + } // for i - m_CacheOrder[] + m_CacheOrder[0] = Idx; + memcpy(m_CacheData[Idx].m_BiomeMap, a_BiomeMap, sizeof(a_BiomeMap)); + m_CacheData[Idx].m_ChunkX = a_ChunkX; + m_CacheData[Idx].m_ChunkZ = a_ChunkZ; +} + + + + + +void cBioGenCache::InitializeBiomeGen(cIniFile & a_IniFile) +{ + super::InitializeBiomeGen(a_IniFile); + m_BioGenToCache->InitializeBiomeGen(a_IniFile); +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cBiomeGenList: + +void cBiomeGenList::InitializeBiomes(const AString & a_Biomes) +{ + AStringVector Split = StringSplit(a_Biomes, ","); + + // Convert each string in the list into biome: + for (AStringVector::const_iterator itr = Split.begin(); itr != Split.end(); ++itr) + { + AStringVector Split2 = StringSplit(*itr, ":"); + if (Split2.size() < 1) + { + continue; + } + int Count = 1; + if (Split2.size() >= 2) + { + Count = atol(Split2[1].c_str()); + if (Count <= 0) + { + LOGWARNING("Cannot decode biome count: \"%s\"; using 1.", Split2[1].c_str()); + Count = 1; + } + } + EMCSBiome Biome = StringToBiome(Split2[0]); + if (Biome != -1) + { + for (int i = 0; i < Count; i++) + { + m_Biomes.push_back(Biome); + } + } + else + { + LOGWARNING("Cannot decode biome name: \"%s\"; skipping", Split2[0].c_str()); + } + } // for itr - Split[] + if (!m_Biomes.empty()) + { + m_BiomesCount = (int)m_Biomes.size(); + return; + } + + // There were no biomes, add default biomes: + static EMCSBiome Biomes[] = + { + biOcean, + biPlains, + biDesert, + biExtremeHills, + biForest, + biTaiga, + biSwampland, + biRiver, + biFrozenOcean, + biFrozenRiver, + biIcePlains, + biIceMountains, + biMushroomIsland, + biMushroomShore, + biBeach, + biDesertHills, + biForestHills, + biTaigaHills, + biExtremeHillsEdge, + biJungle, + biJungleHills, + } ; + m_Biomes.reserve(ARRAYCOUNT(Biomes)); + for (int i = 0; i < ARRAYCOUNT(Biomes); i++) + { + m_Biomes.push_back(Biomes[i]); + } + m_BiomesCount = (int)m_Biomes.size(); +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cBioGenCheckerboard: + +void cBioGenCheckerboard::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) +{ + for (int z = 0; z < cChunkDef::Width; z++) + { + int Base = cChunkDef::Width * a_ChunkZ + z; + for (int x = 0; x < cChunkDef::Width; x++) + { + int Add = cChunkDef::Width * a_ChunkX + x; + a_BiomeMap[x + cChunkDef::Width * z] = m_Biomes[(Base / m_BiomeSize + Add / m_BiomeSize) % m_BiomesCount]; + } + } +} + + + + + +void cBioGenCheckerboard::InitializeBiomeGen(cIniFile & a_IniFile) +{ + super::InitializeBiomeGen(a_IniFile); + AString Biomes = a_IniFile.GetValueSet ("Generator", "CheckerBoardBiomes", ""); + m_BiomeSize = a_IniFile.GetValueSetI("Generator", "CheckerboardBiomeSize", 64); + m_BiomeSize = (m_BiomeSize < 8) ? 8 : m_BiomeSize; + InitializeBiomes(Biomes); +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cBioGenVoronoi : + +void cBioGenVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) +{ + int BaseZ = cChunkDef::Width * a_ChunkZ; + int BaseX = cChunkDef::Width * a_ChunkX; + for (int z = 0; z < cChunkDef::Width; z++) + { + int AbsoluteZ = BaseZ + z; + for (int x = 0; x < cChunkDef::Width; x++) + { + cChunkDef::SetBiome(a_BiomeMap, x, z, VoronoiBiome(BaseX + x, AbsoluteZ)); + } // for x + } // for z +} + + + + + +void cBioGenVoronoi::InitializeBiomeGen(cIniFile & a_IniFile) +{ + super::InitializeBiomeGen(a_IniFile); + m_CellSize = a_IniFile.GetValueSetI("Generator", "VoronoiCellSize", 64); + AString Biomes = a_IniFile.GetValueSet ("Generator", "VoronoiBiomes", ""); + InitializeBiomes(Biomes); +} + + + + + +EMCSBiome cBioGenVoronoi::VoronoiBiome(int a_BlockX, int a_BlockZ) +{ + int CellX = a_BlockX / m_CellSize; + int CellZ = a_BlockZ / m_CellSize; + + // Note that Noise values need to be divided by 8 to gain a uniform modulo-2^n distribution + + // Get 5x5 neighboring cell seeds, compare distance to each. Return the biome in the minumim-distance cell + int MinDist = m_CellSize * m_CellSize * 16; // There has to be a cell closer than this + EMCSBiome res = biPlains; // Will be overriden + for (int x = CellX - 2; x <= CellX + 2; x++) + { + int BaseX = x * m_CellSize; + for (int z = CellZ - 2; z < CellZ + 2; z++) + { + int OffsetX = (m_Noise.IntNoise3DInt(x, 16 * x + 32 * z, z) / 8) % m_CellSize; + int OffsetZ = (m_Noise.IntNoise3DInt(x, 32 * x - 16 * z, z) / 8) % m_CellSize; + int SeedX = BaseX + OffsetX; + int SeedZ = z * m_CellSize + OffsetZ; + + int Dist = (SeedX - a_BlockX) * (SeedX - a_BlockX) + (SeedZ - a_BlockZ) * (SeedZ - a_BlockZ); + if (Dist < MinDist) + { + MinDist = Dist; + res = m_Biomes[(m_Noise.IntNoise3DInt(x, x - z + 1000, z) / 8) % m_BiomesCount]; + } + } // for z + } // for x + + return res; +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cBioGenDistortedVoronoi: + +void cBioGenDistortedVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) +{ + int BaseZ = cChunkDef::Width * a_ChunkZ; + int BaseX = cChunkDef::Width * a_ChunkX; + + // Distortions for linear interpolation: + int DistortX[cChunkDef::Width + 1][cChunkDef::Width + 1]; + int DistortZ[cChunkDef::Width + 1][cChunkDef::Width + 1]; + 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]); + } + + LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4); + LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4); + + for (int z = 0; z < cChunkDef::Width; z++) + { + int AbsoluteZ = BaseZ + z; + for (int x = 0; x < cChunkDef::Width; x++) + { + // Distort(BaseX + x, AbsoluteZ, DistX, DistZ); + cChunkDef::SetBiome(a_BiomeMap, x, z, VoronoiBiome(DistortX[x][z], DistortZ[x][z])); + } // for x + } // for z +} + + + + + +void cBioGenDistortedVoronoi::InitializeBiomeGen(cIniFile & a_IniFile) +{ + // Do NOT call super::InitializeBiomeGen(), as it would try to read Voronoi params instead of DistortedVoronoi params + m_CellSize = a_IniFile.GetValueSetI("Generator", "DistortedVoronoiCellSize", 96); + AString Biomes = a_IniFile.GetValueSet ("Generator", "DistortedVoronoiBiomes", ""); + InitializeBiomes(Biomes); +} + + + + +void cBioGenDistortedVoronoi::Distort(int a_BlockX, int a_BlockZ, int & a_DistortedX, int & a_DistortedZ) +{ + double NoiseX = m_Noise.CubicNoise3D((float)a_BlockX / m_CellSize, (float)a_BlockZ / m_CellSize, 1000); + NoiseX += 0.5 * m_Noise.CubicNoise3D(2 * (float)a_BlockX / m_CellSize, 2 * (float)a_BlockZ / m_CellSize, 2000); + NoiseX += 0.08 * m_Noise.CubicNoise3D(16 * (float)a_BlockX / m_CellSize, 16 * (float)a_BlockZ / m_CellSize, 3000); + double NoiseZ = m_Noise.CubicNoise3D((float)a_BlockX / m_CellSize, (float)a_BlockZ / m_CellSize, 4000); + NoiseZ += 0.5 * m_Noise.CubicNoise3D(2 * (float)a_BlockX / m_CellSize, 2 * (float)a_BlockZ / m_CellSize, 5000); + NoiseZ += 0.08 * m_Noise.CubicNoise3D(16 * (float)a_BlockX / m_CellSize, 16 * (float)a_BlockZ / m_CellSize, 6000); + + a_DistortedX = a_BlockX + (int)(m_CellSize * 0.5 * NoiseX); + a_DistortedZ = a_BlockZ + (int)(m_CellSize * 0.5 * NoiseZ); +} + + + + + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cBioGenMultiStepMap : + +cBioGenMultiStepMap::cBioGenMultiStepMap(int a_Seed) : + m_Noise1(a_Seed + 1000), + m_Noise2(a_Seed + 2000), + m_Noise3(a_Seed + 3000), + m_Noise4(a_Seed + 4000), + m_Noise5(a_Seed + 5000), + m_Noise6(a_Seed + 6000), + m_Seed(a_Seed), + m_OceanCellSize(384), + m_MushroomIslandSize(64), + m_RiverCellSize(384), + m_RiverWidthThreshold(0.125), + m_LandBiomesSize(1024) +{ +} + + + + + +void cBioGenMultiStepMap::InitializeBiomeGen(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 = 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); + } + LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4); + LinearUpscale2DArrayInPlace(&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_Noise2.IntNoise3DInt(RealCellX, 16 * RealCellX + 32 * RealCellZ, RealCellZ) / 8) % m_OceanCellSize; + int OffsetZ = (m_Noise4.IntNoise3DInt(RealCellX, 32 * RealCellX - 16 * RealCellZ, RealCellZ) / 8) % m_OceanCellSize; + SeedX[xc][zc] = CellBlockX + OffsetX; + SeedZ[xc][zc] = CellBlockZ + OffsetZ; + SeedV[xc][zc] = (((m_Noise6.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_Noise1.CubicNoise2D( NoiseCoordX, NoiseCoordZ); + Noise += 0.5 * m_Noise3.CubicNoise2D(2 * NoiseCoordX, 2 * NoiseCoordZ); + Noise += 0.1 * m_Noise5.CubicNoise2D(8 * NoiseCoordX, 8 * NoiseCoordZ); + + 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_Noise3.CubicNoise2D( (float)a_BlockX / a_CellSize, (float)a_BlockZ / a_CellSize); + NoiseX += 0.5 * m_Noise2.CubicNoise2D(2 * (float)a_BlockX / a_CellSize, 2 * (float)a_BlockZ / a_CellSize); + NoiseX += 0.1 * m_Noise1.CubicNoise2D(16 * (float)a_BlockX / a_CellSize, 16 * (float)a_BlockZ / a_CellSize); + double NoiseZ = m_Noise6.CubicNoise2D( (float)a_BlockX / a_CellSize, (float)a_BlockZ / a_CellSize); + NoiseZ += 0.5 * m_Noise5.CubicNoise2D(2 * (float)a_BlockX / a_CellSize, 2 * (float)a_BlockZ / a_CellSize); + NoiseZ += 0.1 * m_Noise4.CubicNoise2D(16 * (float)a_BlockX / a_CellSize, 16 * (float)a_BlockZ / a_CellSize); + + 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) +{ + // Linear interpolation over 8x8 blocks; use double for better precision: + DblMap TemperatureMap; + DblMap HumidityMap; + for (int z = 0; z < 17; z += 8) + { + float NoiseCoordZ = (float)(a_ChunkZ * cChunkDef::Width + z) / m_LandBiomesSize; + for (int x = 0; x < 17; x += 8) + { + float NoiseCoordX = (float)(a_ChunkX * cChunkDef::Width + x) / m_LandBiomesSize; + + double NoiseT = m_Noise1.CubicNoise2D( NoiseCoordX, NoiseCoordZ); + NoiseT += 0.5 * m_Noise2.CubicNoise2D(2 * NoiseCoordX, 2 * NoiseCoordZ); + NoiseT += 0.1 * m_Noise3.CubicNoise2D(8 * NoiseCoordX, 8 * NoiseCoordZ); + TemperatureMap[x + 17 * z] = NoiseT; + + double NoiseH = m_Noise4.CubicNoise2D( NoiseCoordX, NoiseCoordZ); + NoiseH += 0.5 * m_Noise5.CubicNoise2D(2 * NoiseCoordX, 2 * NoiseCoordZ); + NoiseH += 0.1 * m_Noise6.CubicNoise2D(8 * NoiseCoordX, 8 * NoiseCoordZ); + HumidityMap[x + 17 * z] = NoiseH; + } // for x + } // for z + LinearUpscale2DArrayInPlace(TemperatureMap, 17, 17, 8, 8); + LinearUpscale2DArrayInPlace(HumidityMap, 17, 17, 8, 8); + + // Re-map into integral values in [0 .. 255] range: + for (int idx = 0; idx < ARRAYCOUNT(a_TemperatureMap); idx++) + { + a_TemperatureMap[idx] = std::max(0, std::min(255, (int)(128 + TemperatureMap[idx] * 128))); + a_HumidityMap[idx] = std::max(0, std::min(255, (int)(128 + HumidityMap[idx] * 128))); + } +} + + + + + +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++) + { + int idxZ = 17 * z; + for (int x = 0; x < cChunkDef::Width; x++) + { + if (cChunkDef::GetBiome(a_BiomeMap, x, z) != -1) + { + // Already set before + continue; + } + int idx = idxZ + x; + 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 + idx += 1; + } // for z +} + + + + |