From 7abaede2457e494290882d9795873aab2309da65 Mon Sep 17 00:00:00 2001 From: "madmaxoft@gmail.com" Date: Sat, 2 Jun 2012 12:19:20 +0000 Subject: Added the Biomal height generator, made it the default height generator. git-svn-id: http://mc-server.googlecode.com/svn/trunk@536 0a769ca7-a7f5-676a-18bf-c427514a06d6 --- source/HeiGen.cpp | 121 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 121 insertions(+) (limited to 'source/HeiGen.cpp') diff --git a/source/HeiGen.cpp b/source/HeiGen.cpp index a0744ed19..6513d2730 100644 --- a/source/HeiGen.cpp +++ b/source/HeiGen.cpp @@ -89,3 +89,124 @@ void cHeiGenClassic::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightM + +/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////// +// cHeiGenBiomal: + +const cHeiGenBiomal::sGenParam cHeiGenBiomal::m_GenParam[biNumBiomes] = +{ + /* Fast-changing | Middle-changing | Slow-changing |*/ + /* Biome | Freq1 | Amp1 | Freq2 | Amp2 | Freq3 | Amp3 | BaseHeight */ + /* biOcean */ { 0.1f, 2.0f, 0.05f, 12.0f, 0.01f, 10.0f, 40}, // done + /* biPlains */ { 0.1f, 1.0f, 0.05f, 1.5f, 0.01f, 4.0f, 68}, // done + /* biDesert */ { 0.1f, 1.0f, 0.05f, 1.5f, 0.01f, 4.0f, 68}, // done + /* biExtremeHills */ { 0.2f, 4.0f, 0.05f, 20.0f, 0.01f, 16.0f, 100}, // done + /* biForest */ { 0.1f, 1.0f, 0.05f, 2.0f, 0.01f, 4.0f, 70}, // done + /* biTaiga */ { 0.1f, 1.0f, 0.05f, 2.0f, 0.01f, 4.0f, 70}, // done + /* biSwampland */ { 0.1f, 1.1f, 0.05f, 1.5f, 0.02f, 2.5f, 61.5}, // done + /* biRiver */ { 0.2f, 3.0f, 0.05f, 1.0f, 0.01f, 1.0f, 56}, // done + /* biNether */ { 0.1f, 0.0f, 0.01f, 0.0f, 0.01f, 0.0f, 0}, // Unused, but must be here due to indexing + /* biSky */ { 0.1f, 0.0f, 0.01f, 0.0f, 0.01f, 0.0f, 0}, // Unused, but must be here due to indexing + /* biFrozenOcean */ { 0.1f, 2.0f, 0.05f, 12.0f, 0.01f, 10.0f, 40}, // done + /* biFrozenRiver */ { 0.2f, 3.0f, 0.05f, 1.0f, 0.01f, 1.0f, 56}, // done + /* biIcePlains */ { 0.1f, 1.0f, 0.05f, 1.5f, 0.01f, 4.0f, 68}, // done + /* biIceMountains */ { 0.2f, 2.0f, 0.05f, 10.0f, 0.01f, 8.0f, 80}, // done + /* biMushroomIsland */ { 0.1f, 2.0f, 0.05f, 8.0f, 0.01f, 6.0f, 80}, // done + /* biMushroomShore */ { 0.1f, 1.0f, 0.05f, 2.0f, 0.01f, 4.0f, 64}, // done + /* biBeach */ { 0.1f, 0.5f, 0.05f, 1.0f, 0.01f, 1.0f, 64}, // done + /* biDesertHills */ { 0.2f, 2.0f, 0.05f, 5.0f, 0.01f, 4.0f, 75}, // done + /* biForestHills */ { 0.2f, 2.0f, 0.05f, 12.0f, 0.01f, 10.0f, 80}, // done + /* biTaigaHills */ { 0.2f, 2.0f, 0.05f, 12.0f, 0.01f, 10.0f, 80}, // done + /* biExtremeHillsEdge */ { 0.2f, 3.0f, 0.05f, 16.0f, 0.01f, 12.0f, 80}, // done + /* biJungle */ { 0.1f, 3.0f, 0.05f, 6.0f, 0.01f, 6.0f, 70}, // done + /* biJungleHills */ { 0.2f, 3.0f, 0.05f, 12.0f, 0.01f, 10.0f, 80}, // done +} ; + + + + + +void cHeiGenBiomal::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) +{ + // Generate a 3x3 chunk area of biomes around this chunk: + BiomeNeighbors Biomes; + for (int z = -1; z <= 1; z++) + { + for (int x = -1; x <= 1; x++) + { + m_BiomeGen.GenBiomes(a_ChunkX + x, a_ChunkZ + z, Biomes[x + 1][z + 1]); + } // for x + } // for z + + // For each height, go through neighboring biomes and add up their idea of height: + for (int z = 0; z < cChunkDef::Width; z++) + { + for (int x = 0; x < cChunkDef::Width; x++) + { + cChunkDef::SetHeight(a_HeightMap, x, z, GetHeightAt(x, z, a_ChunkX, a_ChunkZ, Biomes)); + } // for x + } +} + + + + + +HEIGHTTYPE cHeiGenBiomal::GetHeightAt(int a_RelX, int a_RelZ, int a_ChunkX, int a_ChunkZ, const cHeiGenBiomal::BiomeNeighbors & a_BiomeNeighbors) +{ + // Sum up how many biomes of each type there are in the neighborhood: + int BiomeCounts[biNumBiomes]; + memset(BiomeCounts, 0, sizeof(BiomeCounts)); + int Sum = 0; + for (int z = -8; z <= 8; z++) + { + int FinalZ = a_RelZ + z + cChunkDef::Width; + int IdxZ = FinalZ / cChunkDef::Width; + int ModZ = FinalZ % cChunkDef::Width; + int WeightZ = 9 - abs(z); + for (int x = -8; x <= 8; x++) + { + int FinalX = a_RelX + x + cChunkDef::Width; + int IdxX = FinalX / cChunkDef::Width; + int ModX = FinalX % cChunkDef::Width; + EMCSBiome Biome = cChunkDef::GetBiome(a_BiomeNeighbors[IdxX][IdxZ], ModX, ModZ); + if ((Biome < 0) || (Biome >= ARRAYCOUNT(BiomeCounts))) + { + continue; + } + int WeightX = 9 - abs(x); + BiomeCounts[Biome] += WeightX + WeightZ; + Sum += WeightX + WeightZ; + } // for x + } // for z + + // For each biome type that has a nonzero count, calc its height and add it: + if (Sum > 0) + { + int Height = 0; + int BlockX = a_ChunkX * cChunkDef::Width + a_RelX; + int BlockZ = a_ChunkZ * cChunkDef::Width + a_RelZ; + for (int i = 0; i < ARRAYCOUNT(BiomeCounts); i++) + { + if (BiomeCounts[i] == 0) + { + continue; + } + float oct1 = m_Noise.CubicNoise2D(BlockX * m_GenParam[i].m_HeightFreq1, BlockZ * m_GenParam[i].m_HeightFreq1) * m_GenParam[i].m_HeightAmp1; + float oct2 = m_Noise.CubicNoise2D(BlockX * m_GenParam[i].m_HeightFreq2, BlockZ * m_GenParam[i].m_HeightFreq2) * m_GenParam[i].m_HeightAmp2; + float oct3 = m_Noise.CubicNoise2D(BlockX * m_GenParam[i].m_HeightFreq3, BlockZ * m_GenParam[i].m_HeightFreq3) * m_GenParam[i].m_HeightAmp3; + Height += BiomeCounts[i] * (int)(m_GenParam[i].m_BaseHeight + oct1 + oct2 + oct3); + } + int res = (HEIGHTTYPE)(Height / Sum); + return min(250, max(res, 5)); + } + + // No known biome around? Weird. Return a bogus value: + ASSERT(!"cHeiGenBiomal: Biome sum failed, no known biome around"); + return 5; +} + + + + + -- cgit v1.2.3