diff options
| -rw-r--r-- | src/Generating/HeiGen.cpp | 207 |
1 files changed, 207 insertions, 0 deletions
diff --git a/src/Generating/HeiGen.cpp b/src/Generating/HeiGen.cpp index f7a26544c..de97bc1a0 100644 --- a/src/Generating/HeiGen.cpp +++ b/src/Generating/HeiGen.cpp @@ -537,6 +537,209 @@ NOISE_DATATYPE cHeiGenBiomal::GetHeightAt(int a_RelX, int a_RelZ, int a_ChunkX, //////////////////////////////////////////////////////////////////////////////// +// cHeiGenMinMax: + +class cHeiGenMinMax: + public cTerrainHeightGen +{ + typedef cTerrainHeightGen super; + + /** Size of the averaging process, in columns (for each direction). Must be less than 16. */ + static const int AVERAGING_SIZE = 4; + +public: + cHeiGenMinMax(int a_Seed, cBiomeGenPtr a_BiomeGen): + m_Noise(a_Seed), + m_BiomeGen(a_BiomeGen), + m_TotalWeight(0) + { + // Initialize the weights: + for (int z = 0; z <= AVERAGING_SIZE * 2; z++) + { + for (int x = 0; x <= AVERAGING_SIZE * 2; x++) + { + m_Weights[z][x] = 1 + 2 * AVERAGING_SIZE - std::abs(x - AVERAGING_SIZE) - std::abs(z - AVERAGING_SIZE); + m_TotalWeight += m_Weights[z][x]; + } + } + + // Initialize the Perlin generator: + m_Perlin.AddOctave(0.04f, 0.2f); + m_Perlin.AddOctave(0.02f, 0.1f); + m_Perlin.AddOctave(0.01f, 0.05f); + m_Perlin.AddOctave(0.005f, 0.025f); + m_Perlin.AddOctave(0.0025f, 0.0125f); + } + + + virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) + { + // Generate the biomes for the 3*3 neighbors: + cChunkDef::BiomeMap neighborBiomes[3][3]; + for (int z = 0; z < 3; z++) for (int x = 0; x < 3; x++) + { + m_BiomeGen->GenBiomes(a_ChunkX + x - 1, a_ChunkZ + z - 1, neighborBiomes[z][x]); + } + + // Get the min and max heights based on the biomes: + double minHeight[cChunkDef::Width * cChunkDef::Width]; + double maxHeight[cChunkDef::Width * cChunkDef::Width]; + for (int z = 0; z < cChunkDef::Width; z++) + { + for (int x = 0; x < cChunkDef::Width; x++) + { + // For each column, sum the min and max values of the neighborhood around it: + double min = 0, max = 0; + for (int relz = 0; relz <= AVERAGING_SIZE * 2; relz++) + { + int bz = z + 16 + relz - AVERAGING_SIZE; // Biome Z coord relative to the neighborBiomes start + int cz = bz / 16; // Chunk Z coord relative to the neighborBiomes start + bz = bz % 16; // Biome Z coord relative to cz in neighborBiomes + for (int relx = 0; relx <= AVERAGING_SIZE * 2; relx++) + { + int bx = x + 16 + relx - AVERAGING_SIZE; // Biome X coord relative to the neighborBiomes start + int cx = bx / 16; // Chunk X coord relative to the neighborBiomes start + bx = bx % 16; // Biome X coord relative to cz in neighborBiomes + + // Get the biome's min and max heights: + double bmin, bmax; + getBiomeMinMax(cChunkDef::GetBiome(neighborBiomes[cz][cx], bx, bz), bmin, bmax); + + // Add them to the total, with the weight depending on their relative position to the column: + min += bmin * m_Weights[relz][relx]; + max += bmax * m_Weights[relz][relx]; + } // for relx + } // for relz + minHeight[x + z * cChunkDef::Width] = min / m_TotalWeight; + maxHeight[x + z * cChunkDef::Width] = max / m_TotalWeight; + } // for x + } // for z + + // Generate the base noise: + NOISE_DATATYPE noise[cChunkDef::Width * cChunkDef::Width]; + NOISE_DATATYPE workspace[cChunkDef::Width * cChunkDef::Width]; + NOISE_DATATYPE startX = static_cast<float>(a_ChunkX * cChunkDef::Width); + NOISE_DATATYPE endX = startX + cChunkDef::Width - 1; + NOISE_DATATYPE startZ = static_cast<float>(a_ChunkZ * cChunkDef::Width); + NOISE_DATATYPE endZ = startZ + cChunkDef::Width - 1; + m_Perlin.Generate2D(noise, 16, 16, startX, endX, startZ, endZ, workspace); + + // Make the height by ranging the noise between min and max: + for (int z = 0; z < cChunkDef::Width; z++) + { + for (int x = 0; x < cChunkDef::Width; x++) + { + double min = minHeight[x + z * cChunkDef::Width]; + double max = maxHeight[x + z * cChunkDef::Width]; + double h = (max + min) / 2 + noise[x + z * cChunkDef::Width] * (max - min); + cChunkDef::SetHeight(a_HeightMap, x, z, static_cast<HEIGHTTYPE>(h)); + } + } + } + + + virtual void InitializeHeightGen(cIniFile & a_IniFile) + { + // No settings available + } + +protected: + cNoise m_Noise; + + cPerlinNoise m_Perlin; + + /** The biome generator to query for the underlying biomes. */ + cBiomeGenPtr m_BiomeGen; + + /** Weights applied to each of the min / max values in the neighborhood of the currently evaluated column. */ + double m_Weights[AVERAGING_SIZE * 2 + 1][AVERAGING_SIZE * 2 + 1]; + + /** Sum of all the m_Weights items. */ + double m_TotalWeight; + + + /** Returns the minimum and maximum heights for the given biome. */ + void getBiomeMinMax(EMCSBiome a_Biome, double & a_Min, double & a_Max) + { + switch (a_Biome) + { + case biBeach: a_Min = 61; a_Max = 64; break; + case biBirchForest: a_Min = 63; a_Max = 75; break; + case biBirchForestHills: a_Min = 63; a_Max = 90; break; + case biBirchForestHillsM: a_Min = 63; a_Max = 90; break; + case biBirchForestM: a_Min = 63; a_Max = 75; break; + case biColdBeach: a_Min = 61; a_Max = 64; break; + case biColdTaiga: a_Min = 63; a_Max = 75; break; + case biColdTaigaHills: a_Min = 63; a_Max = 90; break; + case biColdTaigaM: a_Min = 63; a_Max = 75; break; + case biDeepOcean: a_Min = 30; a_Max = 60; break; + case biDesert: a_Min = 63; a_Max = 70; break; + case biDesertHills: a_Min = 63; a_Max = 85; break; + case biDesertM: a_Min = 63; a_Max = 70; break; + case biEnd: a_Min = 10; a_Max = 100; break; + case biExtremeHills: a_Min = 60; a_Max = 120; break; + case biExtremeHillsEdge: a_Min = 63; a_Max = 100; break; + case biExtremeHillsM: a_Min = 60; a_Max = 120; break; + case biExtremeHillsPlus: a_Min = 60; a_Max = 140; break; + case biExtremeHillsPlusM: a_Min = 60; a_Max = 140; break; + case biFlowerForest: a_Min = 63; a_Max = 75; break; + case biForest: a_Min = 63; a_Max = 75; break; + case biForestHills: a_Min = 63; a_Max = 90; break; + case biFrozenOcean: a_Min = 45; a_Max = 64; break; + case biFrozenRiver: a_Min = 60; a_Max = 62; break; + case biIceMountains: a_Min = 63; a_Max = 90; break; + case biIcePlains: a_Min = 63; a_Max = 70; break; + case biIcePlainsSpikes: a_Min = 60; a_Max = 70; break; + case biJungle: a_Min = 60; a_Max = 80; break; + case biJungleEdge: a_Min = 62; a_Max = 75; break; + case biJungleEdgeM: a_Min = 62; a_Max = 75; break; + case biJungleHills: a_Min = 60; a_Max = 90; break; + case biJungleM: a_Min = 60; a_Max = 75; break; + case biMegaSpruceTaiga: a_Min = 63; a_Max = 75; break; + case biMegaSpruceTaigaHills: a_Min = 63; a_Max = 90; break; + case biMegaTaiga: a_Min = 63; a_Max = 75; break; + case biMegaTaigaHills: a_Min = 63; a_Max = 90; break; + case biMesa: a_Min = 63; a_Max = 90; break; + case biMesaBryce: a_Min = 60; a_Max = 67; break; + case biMesaPlateau: a_Min = 75; a_Max = 85; break; + case biMesaPlateauF: a_Min = 80; a_Max = 90; break; + case biMesaPlateauFM: a_Min = 80; a_Max = 90; break; + case biMesaPlateauM: a_Min = 75; a_Max = 85; break; + case biMushroomIsland: a_Min = 63; a_Max = 90; break; + case biMushroomShore: a_Min = 60; a_Max = 75; break; + case biNether: a_Min = 10; a_Max = 100; break; + case biOcean: a_Min = 45; a_Max = 64; break; + case biPlains: a_Min = 63; a_Max = 70; break; + case biRiver: a_Min = 60; a_Max = 62; break; + case biRoofedForest: a_Min = 63; a_Max = 75; break; + case biRoofedForestM: a_Min = 63; a_Max = 75; break; + case biSavanna: a_Min = 63; a_Max = 75; break; + case biSavannaM: a_Min = 63; a_Max = 80; break; + case biSavannaPlateau: a_Min = 75; a_Max = 100; break; + case biSavannaPlateauM: a_Min = 80; a_Max = 160; break; + case biStoneBeach: a_Min = 60; a_Max = 64; break; + case biSunflowerPlains: a_Min = 63; a_Max = 70; break; + case biSwampland: a_Min = 60; a_Max = 67; break; + case biSwamplandM: a_Min = 61; a_Max = 67; break; + case biTaiga: a_Min = 63; a_Max = 75; break; + case biTaigaHills: a_Min = 63; a_Max = 90; break; + case biTaigaM: a_Min = 63; a_Max = 80; break; + default: + { + ASSERT(!"Unknown biome"); + a_Min = 10; + a_Max = 10; + break; + } + } + } +}; + + + + + +//////////////////////////////////////////////////////////////////////////////// // cTerrainHeightGen: cTerrainHeightGenPtr cTerrainHeightGen::CreateHeightGen(cIniFile & a_IniFile, cBiomeGenPtr a_BiomeGen, int a_Seed, bool & a_CacheOffByDefault) @@ -567,6 +770,10 @@ cTerrainHeightGenPtr cTerrainHeightGen::CreateHeightGen(cIniFile & a_IniFile, cB { res = new cEndGen(a_Seed); } + else if (NoCaseCompare(HeightGenName, "MinMax") == 0) + { + res = new cHeiGenMinMax(a_Seed, a_BiomeGen); + } else if (NoCaseCompare(HeightGenName, "Mountains") == 0) { res = new cHeiGenMountains(a_Seed); |