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Added the Biomal height generator, made it the default height generator.

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git-svn-id: http://mc-server.googlecode.com/svn/trunk@536 0a769ca7-a7f5-676a-18bf-c427514a06d6
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madmaxoft@gmail.com
2012-06-02 12:19:20 +00:00
parent 4ea767f39b
commit 7abaede245
6 changed files with 176 additions and 6 deletions
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121
source/HeiGen.cpp
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@@ -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;
}