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authormadmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6>2013-03-24 17:07:51 +0100
committermadmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6>2013-03-24 17:07:51 +0100
commit5462f43baefdf839d7d2e5036d2ec3c95d888c02 (patch)
treea202c0b0b8f6f11934c849c751ea0e573b2ffb13 /source
parentUpdated core plugin. (diff)
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Diffstat (limited to 'source')
-rw-r--r--source/Generating/BioGen.cpp29
-rw-r--r--source/Generating/BioGen.h7
-rw-r--r--source/Noise.h48
3 files changed, 71 insertions, 13 deletions
diff --git a/source/Generating/BioGen.cpp b/source/Generating/BioGen.cpp
index 40fa0de53..8e38dc19f 100644
--- a/source/Generating/BioGen.cpp
+++ b/source/Generating/BioGen.cpp
@@ -393,10 +393,10 @@ cBioGenMultiStepMap::cBioGenMultiStepMap(int a_Seed) :
m_Noise(a_Seed),
m_Seed(a_Seed),
m_OceanCellSize(384),
- m_MushroomIslandSize(32),
- m_RiverCellSize(128),
- m_RiverWidthThreshold((float)0.05),
- m_LandBiomesSize(192)
+ m_MushroomIslandSize(64),
+ m_RiverCellSize(384),
+ m_RiverWidthThreshold(0.125),
+ m_LandBiomesSize(1024)
{
}
@@ -409,7 +409,7 @@ void cBioGenMultiStepMap::Initialize(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 = (float)a_IniFile.GetValueSetF("Generator", "MultiStepMapRiverWidth", m_RiverWidthThreshold);
+ m_RiverWidthThreshold = a_IniFile.GetValueSetF("Generator", "MultiStepMapRiverWidth", m_RiverWidthThreshold);
m_LandBiomesSize = (float)a_IniFile.GetValueSetI("Generator", "MultiStepMapLandBiomeSize", (int)m_LandBiomesSize);
}
@@ -595,7 +595,9 @@ void cBioGenMultiStepMap::Distort(int a_BlockX, int a_BlockZ, int & a_DistortedX
void cBioGenMultiStepMap::BuildTemperatureHumidityMaps(int a_ChunkX, int a_ChunkZ, IntMap & a_TemperatureMap, IntMap & a_HumidityMap)
{
- // Linear interpolation over 8x8 blocks
+ // 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;
@@ -606,16 +608,23 @@ void cBioGenMultiStepMap::BuildTemperatureHumidityMaps(int a_ChunkX, int a_Chunk
double NoiseT = m_Noise.CubicNoise3D( NoiseCoordX, NoiseCoordZ, 7000);
NoiseT += 0.5 * m_Noise.CubicNoise3D(2 * NoiseCoordX, 2 * NoiseCoordZ, 8000);
NoiseT += 0.1 * m_Noise.CubicNoise3D(8 * NoiseCoordX, 8 * NoiseCoordZ, 9000);
- a_TemperatureMap[x + 17 * z] = std::max(0, std::min(255, (int)(128 + NoiseT * 128)));
+ TemperatureMap[x + 17 * z] = NoiseT;
double NoiseH = m_Noise.CubicNoise3D( NoiseCoordX, NoiseCoordZ, 9000);
NoiseH += 0.5 * m_Noise.CubicNoise3D(2 * NoiseCoordX, 2 * NoiseCoordZ, 5000);
NoiseH += 0.1 * m_Noise.CubicNoise3D(8 * NoiseCoordX, 8 * NoiseCoordZ, 1000);
- a_HumidityMap[x + 17 * z] = std::max(0, std::min(255, (int)(128 + NoiseH * 128)));
+ HumidityMap[x + 17 * z] = NoiseH;
} // for x
} // for z
- IntArrayLinearInterpolate2D(a_TemperatureMap, 17, 17, 8, 8);
- IntArrayLinearInterpolate2D(a_HumidityMap, 17, 17, 8, 8);
+ ArrayLinearInterpolate2D(TemperatureMap, 17, 17, 8, 8);
+ ArrayLinearInterpolate2D(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)));
+ }
}
diff --git a/source/Generating/BioGen.h b/source/Generating/BioGen.h
index 88ca3e438..ad3ff01a3 100644
--- a/source/Generating/BioGen.h
+++ b/source/Generating/BioGen.h
@@ -180,10 +180,11 @@ protected:
int m_OceanCellSize;
int m_MushroomIslandSize;
int m_RiverCellSize;
- float m_RiverWidthThreshold;
- float m_LandBiomesSize;
+ double m_RiverWidthThreshold;
+ float m_LandBiomesSize;
- typedef int IntMap[17 * 17]; // x + 17 * z, expected trimmed into [0..255] range
+ typedef int IntMap[17 * 17]; // x + 17 * z, expected trimmed into [0..255] range
+ typedef double DblMap[17 * 17]; // x + 17 * z, expected trimmed into [0..1] range
// cBiomeGen overrides:
virtual void GenBiomes(int a_ChunkX, int a_ChunkZ, cChunkDef::BiomeMap & a_BiomeMap) override;
diff --git a/source/Noise.h b/source/Noise.h
index 68428d33e..9a129d81f 100644
--- a/source/Noise.h
+++ b/source/Noise.h
@@ -85,6 +85,54 @@ extern void IntArrayLinearInterpolate2D(
+/// Linearly interpolates values in the array between the anchor points; universal data type
+template<typename TYPE> void ArrayLinearInterpolate2D(
+ TYPE * a_Array,
+ int a_SizeX, int a_SizeY, // Dimensions of the array
+ int a_AnchorStepX, int a_AnchorStepY // Distances between the anchor points in each direction
+)
+{
+ // First interpolate columns where the anchor points are:
+ int LastYCell = a_SizeY - a_AnchorStepY;
+ for (int y = 0; y < LastYCell; y += a_AnchorStepY)
+ {
+ int Idx = a_SizeX * y;
+ for (int x = 0; x < a_SizeX; x += a_AnchorStepX)
+ {
+ TYPE StartValue = a_Array[Idx];
+ TYPE EndValue = a_Array[Idx + a_SizeX * a_AnchorStepY];
+ TYPE Diff = EndValue - StartValue;
+ for (int CellY = 1; CellY < a_AnchorStepY; CellY++)
+ {
+ a_Array[Idx + a_SizeX * CellY] = StartValue + Diff * CellY / a_AnchorStepY;
+ } // for CellY
+ Idx += a_AnchorStepX;
+ } // for x
+ } // for y
+
+ // Now interpolate in rows, each row has values in the anchor columns
+ int LastXCell = a_SizeX - a_AnchorStepX;
+ for (int y = 0; y < a_SizeY; y++)
+ {
+ int Idx = a_SizeX * y;
+ for (int x = 0; x < LastXCell; x += a_AnchorStepX)
+ {
+ TYPE StartValue = a_Array[Idx];
+ TYPE EndValue = a_Array[Idx + a_AnchorStepX];
+ TYPE Diff = EndValue - StartValue;
+ for (int CellX = 1; CellX < a_AnchorStepX; CellX++)
+ {
+ a_Array[Idx + CellX] = StartValue + CellX * Diff / a_AnchorStepX;
+ } // for CellY
+ Idx += a_AnchorStepX;
+ }
+ }
+}
+
+
+
+
+
#if NOISE_USE_INLINE
#include "Noise.inc"
#endif