464dcc3764
Measured 30% performance increase. git-svn-id: http://mc-server.googlecode.com/svn/trunk@1482 0a769ca7-a7f5-676a-18bf-c427514a06d6
708 lines
24 KiB
C++
708 lines
24 KiB
C++
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// BioGen.cpp
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// Implements the various biome generators
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#include "Globals.h"
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#include "BioGen.h"
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#include "../../iniFile/iniFile.h"
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#include "../LinearUpscale.h"
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cBioGenConstant:
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void cBioGenConstant::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
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{
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for (int i = 0; i < ARRAYCOUNT(a_BiomeMap); i++)
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{
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a_BiomeMap[i] = m_Biome;
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}
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}
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void cBioGenConstant::Initialize(cIniFile & a_IniFile)
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{
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AString Biome = a_IniFile.GetValueSet("Generator", "ConstantBiome", "Plains");
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m_Biome = StringToBiome(Biome);
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if (m_Biome == -1)
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{
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LOGWARN("[Generator]::ConstantBiome value \"%s\" not recognized, using \"Plains\".", Biome.c_str());
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m_Biome = biPlains;
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}
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cBioGenCache:
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cBioGenCache::cBioGenCache(cBiomeGen * a_BioGenToCache, int a_CacheSize) :
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m_BioGenToCache(a_BioGenToCache),
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m_CacheSize(a_CacheSize),
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m_CacheOrder(new int[a_CacheSize]),
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m_CacheData(new sCacheData[a_CacheSize]),
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m_NumHits(0),
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m_NumMisses(0),
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m_TotalChain(0)
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{
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for (int i = 0; i < m_CacheSize; i++)
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{
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m_CacheOrder[i] = i;
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m_CacheData[i].m_ChunkX = 0x7fffffff;
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m_CacheData[i].m_ChunkZ = 0x7fffffff;
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}
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}
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cBioGenCache::~cBioGenCache()
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{
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delete[] m_CacheData;
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delete[] m_CacheOrder;
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}
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void cBioGenCache::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
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{
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if (((m_NumHits + m_NumMisses) % 1024) == 10)
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{
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LOGD("BioGenCache: %d hits, %d misses, saved %.2f %%", m_NumHits, m_NumMisses, 100.0 * m_NumHits / (m_NumHits + m_NumMisses));
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LOGD("BioGenCache: Avg cache chain length: %.2f", (float)m_TotalChain / m_NumHits);
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}
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for (int i = 0; i < m_CacheSize; i++)
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{
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if (
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(m_CacheData[m_CacheOrder[i]].m_ChunkX != a_ChunkX) ||
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(m_CacheData[m_CacheOrder[i]].m_ChunkZ != a_ChunkZ)
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)
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{
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continue;
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}
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// Found it in the cache
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int Idx = m_CacheOrder[i];
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// Move to front:
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for (int j = i; j > 0; j--)
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{
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m_CacheOrder[j] = m_CacheOrder[j - 1];
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}
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m_CacheOrder[0] = Idx;
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// Use the cached data:
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memcpy(a_BiomeMap, m_CacheData[Idx].m_BiomeMap, sizeof(a_BiomeMap));
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m_NumHits++;
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m_TotalChain += i;
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return;
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} // for i - cache
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// Not in the cache:
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m_NumMisses++;
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m_BioGenToCache->GenBiomes(a_ChunkX, a_ChunkZ, a_BiomeMap);
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// Insert it as the first item in the MRU order:
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int Idx = m_CacheOrder[m_CacheSize - 1];
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for (int i = m_CacheSize - 1; i > 0; i--)
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{
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m_CacheOrder[i] = m_CacheOrder[i - 1];
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} // for i - m_CacheOrder[]
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m_CacheOrder[0] = Idx;
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memcpy(m_CacheData[Idx].m_BiomeMap, a_BiomeMap, sizeof(a_BiomeMap));
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m_CacheData[Idx].m_ChunkX = a_ChunkX;
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m_CacheData[Idx].m_ChunkZ = a_ChunkZ;
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}
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void cBioGenCache::Initialize(cIniFile & a_IniFile)
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{
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super::Initialize(a_IniFile);
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m_BioGenToCache->Initialize(a_IniFile);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cBiomeGenList:
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void cBiomeGenList::InitializeBiomes(const AString & a_Biomes)
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{
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AStringVector Split = StringSplit(a_Biomes, ",");
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// Convert each string in the list into biome:
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for (AStringVector::const_iterator itr = Split.begin(); itr != Split.end(); ++itr)
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{
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AStringVector Split2 = StringSplit(*itr, ":");
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if (Split2.size() < 1)
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{
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continue;
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}
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int Count = 1;
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if (Split2.size() >= 2)
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{
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Count = atol(Split2[1].c_str());
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if (Count <= 0)
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{
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LOGWARNING("Cannot decode biome count: \"%s\"; using 1.", Split2[1].c_str());
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Count = 1;
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}
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}
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EMCSBiome Biome = StringToBiome(Split2[0]);
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if (Biome != -1)
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{
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for (int i = 0; i < Count; i++)
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{
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m_Biomes.push_back(Biome);
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}
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}
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else
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{
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LOGWARNING("Cannot decode biome name: \"%s\"; skipping", Split2[0].c_str());
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}
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} // for itr - Split[]
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if (!m_Biomes.empty())
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{
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m_BiomesCount = (int)m_Biomes.size();
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return;
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}
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// There were no biomes, add default biomes:
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static EMCSBiome Biomes[] =
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{
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biOcean,
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biPlains,
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biDesert,
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biExtremeHills,
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biForest,
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biTaiga,
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biSwampland,
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biRiver,
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biFrozenOcean,
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biFrozenRiver,
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biIcePlains,
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biIceMountains,
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biMushroomIsland,
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biMushroomShore,
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biBeach,
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biDesertHills,
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biForestHills,
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biTaigaHills,
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biExtremeHillsEdge,
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biJungle,
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biJungleHills,
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} ;
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m_Biomes.reserve(ARRAYCOUNT(Biomes));
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for (int i = 0; i < ARRAYCOUNT(Biomes); i++)
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{
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m_Biomes.push_back(Biomes[i]);
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}
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m_BiomesCount = (int)m_Biomes.size();
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cBioGenCheckerboard:
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void cBioGenCheckerboard::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
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{
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for (int z = 0; z < cChunkDef::Width; z++)
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{
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int Base = cChunkDef::Width * a_ChunkZ + z;
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for (int x = 0; x < cChunkDef::Width; x++)
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{
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int Add = cChunkDef::Width * a_ChunkX + x;
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a_BiomeMap[x + cChunkDef::Width * z] = m_Biomes[(Base / m_BiomeSize + Add / m_BiomeSize) % m_BiomesCount];
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}
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}
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}
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void cBioGenCheckerboard::Initialize(cIniFile & a_IniFile)
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{
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super::Initialize(a_IniFile);
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AString Biomes = a_IniFile.GetValueSet ("Generator", "CheckerBoardBiomes", "");
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m_BiomeSize = a_IniFile.GetValueSetI("Generator", "CheckerboardBiomeSize", 64);
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m_BiomeSize = (m_BiomeSize < 8) ? 8 : m_BiomeSize;
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InitializeBiomes(Biomes);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cBioGenVoronoi :
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void cBioGenVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
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{
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int BaseZ = cChunkDef::Width * a_ChunkZ;
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int BaseX = cChunkDef::Width * a_ChunkX;
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for (int z = 0; z < cChunkDef::Width; z++)
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{
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int AbsoluteZ = BaseZ + z;
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for (int x = 0; x < cChunkDef::Width; x++)
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{
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cChunkDef::SetBiome(a_BiomeMap, x, z, VoronoiBiome(BaseX + x, AbsoluteZ));
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} // for x
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} // for z
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}
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void cBioGenVoronoi::Initialize(cIniFile & a_IniFile)
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{
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super::Initialize(a_IniFile);
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m_CellSize = a_IniFile.GetValueSetI("Generator", "VoronoiCellSize", 64);
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AString Biomes = a_IniFile.GetValueSet ("Generator", "VoronoiBiomes", "");
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InitializeBiomes(Biomes);
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}
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EMCSBiome cBioGenVoronoi::VoronoiBiome(int a_BlockX, int a_BlockZ)
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{
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int CellX = a_BlockX / m_CellSize;
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int CellZ = a_BlockZ / m_CellSize;
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// Note that Noise values need to be divided by 8 to gain a uniform modulo-2^n distribution
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// Get 5x5 neighboring cell seeds, compare distance to each. Return the biome in the minumim-distance cell
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int MinDist = m_CellSize * m_CellSize * 16; // There has to be a cell closer than this
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EMCSBiome res = biPlains; // Will be overriden
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for (int x = CellX - 2; x <= CellX + 2; x++)
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{
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int BaseX = x * m_CellSize;
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for (int z = CellZ - 2; z < CellZ + 2; z++)
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{
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int OffsetX = (m_Noise.IntNoise3DInt(x, 16 * x + 32 * z, z) / 8) % m_CellSize;
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int OffsetZ = (m_Noise.IntNoise3DInt(x, 32 * x - 16 * z, z) / 8) % m_CellSize;
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int SeedX = BaseX + OffsetX;
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int SeedZ = z * m_CellSize + OffsetZ;
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int Dist = (SeedX - a_BlockX) * (SeedX - a_BlockX) + (SeedZ - a_BlockZ) * (SeedZ - a_BlockZ);
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if (Dist < MinDist)
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{
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MinDist = Dist;
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res = m_Biomes[(m_Noise.IntNoise3DInt(x, x - z + 1000, z) / 8) % m_BiomesCount];
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}
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} // for z
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} // for x
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return res;
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cBioGenDistortedVoronoi:
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void cBioGenDistortedVoronoi::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
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{
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int BaseZ = cChunkDef::Width * a_ChunkZ;
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int BaseX = cChunkDef::Width * a_ChunkX;
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// Distortions for linear interpolation:
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int DistortX[cChunkDef::Width + 1][cChunkDef::Width + 1];
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int DistortZ[cChunkDef::Width + 1][cChunkDef::Width + 1];
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for (int x = 0; x <= 4; x++) for (int z = 0; z <= 4; z++)
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{
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Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z]);
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}
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LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
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LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
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for (int z = 0; z < cChunkDef::Width; z++)
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{
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int AbsoluteZ = BaseZ + z;
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for (int x = 0; x < cChunkDef::Width; x++)
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{
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// Distort(BaseX + x, AbsoluteZ, DistX, DistZ);
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cChunkDef::SetBiome(a_BiomeMap, x, z, VoronoiBiome(DistortX[x][z], DistortZ[x][z]));
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} // for x
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} // for z
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}
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void cBioGenDistortedVoronoi::Initialize(cIniFile & a_IniFile)
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{
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// Do NOT call super::Initialize(), as it would try to read Voronoi params instead of DistortedVoronoi params
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m_CellSize = a_IniFile.GetValueSetI("Generator", "DistortedVoronoiCellSize", 96);
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AString Biomes = a_IniFile.GetValueSet ("Generator", "DistortedVoronoiBiomes", "");
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InitializeBiomes(Biomes);
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}
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void cBioGenDistortedVoronoi::Distort(int a_BlockX, int a_BlockZ, int & a_DistortedX, int & a_DistortedZ)
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{
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double NoiseX = m_Noise.CubicNoise3D((float)a_BlockX / m_CellSize, (float)a_BlockZ / m_CellSize, 1000);
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NoiseX += 0.5 * m_Noise.CubicNoise3D(2 * (float)a_BlockX / m_CellSize, 2 * (float)a_BlockZ / m_CellSize, 2000);
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NoiseX += 0.08 * m_Noise.CubicNoise3D(16 * (float)a_BlockX / m_CellSize, 16 * (float)a_BlockZ / m_CellSize, 3000);
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double NoiseZ = m_Noise.CubicNoise3D((float)a_BlockX / m_CellSize, (float)a_BlockZ / m_CellSize, 4000);
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NoiseZ += 0.5 * m_Noise.CubicNoise3D(2 * (float)a_BlockX / m_CellSize, 2 * (float)a_BlockZ / m_CellSize, 5000);
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NoiseZ += 0.08 * m_Noise.CubicNoise3D(16 * (float)a_BlockX / m_CellSize, 16 * (float)a_BlockZ / m_CellSize, 6000);
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a_DistortedX = a_BlockX + (int)(m_CellSize * 0.5 * NoiseX);
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a_DistortedZ = a_BlockZ + (int)(m_CellSize * 0.5 * NoiseZ);
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}
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// cBioGenMultiStepMap :
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cBioGenMultiStepMap::cBioGenMultiStepMap(int a_Seed) :
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m_Noise1(a_Seed + 1000),
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m_Noise2(a_Seed + 2000),
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m_Noise3(a_Seed + 3000),
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m_Noise4(a_Seed + 4000),
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m_Noise5(a_Seed + 5000),
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m_Noise6(a_Seed + 6000),
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m_Seed(a_Seed),
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m_OceanCellSize(384),
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m_MushroomIslandSize(64),
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m_RiverCellSize(384),
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m_RiverWidthThreshold(0.125),
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m_LandBiomesSize(1024)
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{
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}
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void cBioGenMultiStepMap::Initialize(cIniFile & a_IniFile)
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{
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m_OceanCellSize = a_IniFile.GetValueSetI("Generator", "MultiStepMapOceanCellSize", m_OceanCellSize);
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m_MushroomIslandSize = a_IniFile.GetValueSetI("Generator", "MultiStepMapMushroomIslandSize", m_MushroomIslandSize);
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m_RiverCellSize = a_IniFile.GetValueSetI("Generator", "MultiStepMapRiverCellSize", m_RiverCellSize);
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m_RiverWidthThreshold = a_IniFile.GetValueSetF("Generator", "MultiStepMapRiverWidth", m_RiverWidthThreshold);
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m_LandBiomesSize = (float)a_IniFile.GetValueSetI("Generator", "MultiStepMapLandBiomeSize", (int)m_LandBiomesSize);
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}
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void cBioGenMultiStepMap::GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
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{
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DecideOceanLandMushroom(a_ChunkX, a_ChunkZ, a_BiomeMap);
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AddRivers(a_ChunkX, a_ChunkZ, a_BiomeMap);
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ApplyTemperatureHumidity(a_ChunkX, a_ChunkZ, a_BiomeMap);
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}
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void cBioGenMultiStepMap::DecideOceanLandMushroom(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap)
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{
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// Distorted Voronoi over 3 biomes, with mushroom having only a special occurence.
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// Prepare a distortion lookup table, by distorting a 5x5 area and using that as 1:4 zoom (linear interpolate):
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int BaseZ = cChunkDef::Width * a_ChunkZ;
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int BaseX = cChunkDef::Width * a_ChunkX;
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int DistortX[cChunkDef::Width + 1][cChunkDef::Width + 1];
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int DistortZ[cChunkDef::Width + 1][cChunkDef::Width + 1];
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int DistortSize = m_OceanCellSize / 2;
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for (int x = 0; x <= 4; x++) for (int z = 0; z <= 4; z++)
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{
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Distort(BaseX + x * 4, BaseZ + z * 4, DistortX[4 * x][4 * z], DistortZ[4 * x][4 * z], DistortSize);
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}
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LinearUpscale2DArrayInPlace(&DistortX[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
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LinearUpscale2DArrayInPlace(&DistortZ[0][0], cChunkDef::Width + 1, cChunkDef::Width + 1, 4, 4);
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// Prepare a 9x9 area of neighboring cell seeds
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// (assuming that 7x7 cell area is larger than a chunk being generated)
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const int NEIGHBORHOOD_SIZE = 4; // How many seeds in each direction to check
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int CellX = BaseX / m_OceanCellSize;
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int CellZ = BaseZ / m_OceanCellSize;
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int SeedX[2 * NEIGHBORHOOD_SIZE + 1][2 * NEIGHBORHOOD_SIZE + 1];
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int SeedZ[2 * NEIGHBORHOOD_SIZE + 1][2 * NEIGHBORHOOD_SIZE + 1];
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EMCSBiome SeedV[2 * NEIGHBORHOOD_SIZE + 1][2 * NEIGHBORHOOD_SIZE + 1];
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for (int xc = 0; xc < 2 * NEIGHBORHOOD_SIZE + 1; xc++)
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{
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int RealCellX = xc + CellX - NEIGHBORHOOD_SIZE;
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int CellBlockX = RealCellX * m_OceanCellSize;
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for (int zc = 0; zc < 2 * NEIGHBORHOOD_SIZE + 1; zc++)
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{
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int RealCellZ = zc + CellZ - NEIGHBORHOOD_SIZE;
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int CellBlockZ = RealCellZ * m_OceanCellSize;
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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
|
|
}
|
|
|
|
|
|
|
|
|