8 files changed, 490 insertions, 8 deletions

diff --git a/VC2008/MCServer.vcproj b/VC2008/MCServer.vcproj
index b1e126ad9..7bc0d9323 100644
--- a/VC2008/MCServer.vcproj
+++ b/VC2008/MCServer.vcproj
@@ -1745,6 +1745,10 @@
 					>

 				</File>

 				<File

+					RelativePath="..\source\Generating\DistortedHeightmap.cpp"

+					>

+				</File>

+				<File

 					RelativePath="..\source\Generating\DistortedHeightmap.h"

 					>

 				</File>

diff --git a/source/Generating/ChunkDesc.cpp b/source/Generating/ChunkDesc.cpp
index ff331e6e4..5c59055f7 100644
--- a/source/Generating/ChunkDesc.cpp
+++ b/source/Generating/ChunkDesc.cpp
@@ -558,9 +558,11 @@ void cChunkDesc::VerifyHeightmap(void)
 		{

 			for (int y = cChunkDef::Height - 1; y > 0; y--)

 			{

-				if (GetBlockType(x, y, z) != E_BLOCK_AIR)

+				BLOCKTYPE BlockType = GetBlockType(x, y, z);

+				if (BlockType != E_BLOCK_AIR)

 				{

-					ASSERT(GetHeight(x, z) == y);

+					int Height = GetHeight(x, z);

+					ASSERT(Height == y);

 					break;

 				}

 			}  // for y

diff --git a/source/Generating/ComposableGenerator.cpp b/source/Generating/ComposableGenerator.cpp
index 178ed4537..0dd14aa50 100644
--- a/source/Generating/ComposableGenerator.cpp
+++ b/source/Generating/ComposableGenerator.cpp
@@ -18,6 +18,7 @@
 #include "FinishGen.h"

 

 #include "Caves.h"

+#include "DistortedHeightmap.h"

 #include "MineShafts.h"

 #include "Noise3DGenerator.h"

 #include "Ravines.h"

@@ -37,7 +38,9 @@ cComposableGenerator::cComposableGenerator(cChunkGenerator & a_ChunkGenerator) :
 	m_HeightGen(NULL),

 	m_CompositionGen(NULL),

 	m_Noise3DComposable(NULL),

-	m_NumNoise3DComposableUses(0)

+	m_NumNoise3DComposableUses(0),

+	m_DistortedHeightmap(NULL),

+	m_NumDistortedHeightmapUses(0)

 {

 }

 

@@ -60,7 +63,16 @@ cComposableGenerator::~cComposableGenerator()
 	m_StructureGens.clear();

 

 	// CompositionGen must not be freed if it is shared between HeightGenCache and CompositionGen:

-	if ((m_NumNoise3DComposableUses < 2) || (m_CompositionGen != m_Noise3DComposable))

+	int NumUsed = 1;

+	if (m_CompositionGen == m_Noise3DComposable)

+	{

+		NumUsed = m_NumNoise3DComposableUses;

+	}

+	else if (m_CompositionGen == m_DistortedHeightmap)

+	{

+		NumUsed = m_NumDistortedHeightmapUses;

+	}

+	if (NumUsed == 1)

 	{

 		delete m_CompositionGen;

 	}

@@ -241,6 +253,17 @@ void cComposableGenerator::InitHeightGen(cIniFile & a_IniFile)
 		float HeightAmp3  = (float)a_IniFile.GetValueSetF("Generator", "ClassicHeightAmp3",  0.5);

 		m_HeightGen = new cHeiGenClassic(Seed, HeightFreq1, HeightAmp1, HeightFreq2, HeightAmp2, HeightFreq3, HeightAmp3);

 	}

+	else if (NoCaseCompare(HeightGenName, "DistortedHeightmap") == 0)

+	{

+		if (m_DistortedHeightmap == NULL)

+		{

+			m_DistortedHeightmap = new cDistortedHeightmap(Seed, *m_BiomeGen);

+			m_DistortedHeightmap->Initialize(a_IniFile);

+		}

+		m_HeightGen = m_DistortedHeightmap;

+		m_NumDistortedHeightmapUses++;

+		// TODO: Optimize by sharing with CompoGen

+	}

 	else if (NoCaseCompare(HeightGenName, "Noise3D") == 0)

 	{

 		if (m_Noise3DComposable == NULL)

@@ -327,6 +350,16 @@ void cComposableGenerator::InitCompositionGen(cIniFile & a_IniFile)
 			BlockBeachBottom, BlockSea

 		);

 	}

+	else if (NoCaseCompare(CompoGenName, "DistortedHeightmap") == 0)

+	{

+		if (m_DistortedHeightmap == NULL)

+		{

+			m_DistortedHeightmap = new cDistortedHeightmap(m_ChunkGenerator.GetSeed(), *m_BiomeGen);

+			m_DistortedHeightmap->Initialize(a_IniFile);

+		}

+		m_CompositionGen = m_DistortedHeightmap;

+		m_NumDistortedHeightmapUses++;

+	}

 	else if (NoCaseCompare(CompoGenName, "nether") == 0)

 	{

 		m_CompositionGen = new cCompoGenNether(m_ChunkGenerator.GetSeed());

diff --git a/source/Generating/ComposableGenerator.h b/source/Generating/ComposableGenerator.h
index fb8e4fdc6..ee38bdb9d 100644
--- a/source/Generating/ComposableGenerator.h
+++ b/source/Generating/ComposableGenerator.h
@@ -27,6 +27,9 @@ See http://forum.mc-server.org/showthread.php?tid=409 for details.
 // fwd: Noise3DGenerator.h

 class cNoise3DComposable;

 

+// fwd: DistortedHeightmap.h

+class cDistortedHeightmap;

+

 

 

 

@@ -146,8 +149,11 @@ protected:
 	cFinishGenList           m_FinishGens;

 	

 	// Specific generators that can be reused for different purposes - we don't want to create multiple objects for them

-	cNoise3DComposable * m_Noise3DComposable;

-	int                  m_NumNoise3DComposableUses;  // How many times is it actually used?

+	cNoise3DComposable *  m_Noise3DComposable;

+	int                   m_NumNoise3DComposableUses;  ///< How many times is it actually used?

+	cDistortedHeightmap * m_DistortedHeightmap;

+	int                   m_NumDistortedHeightmapUses;  ///< How many times is it actually used?

+	

 

 	/// Reads the biome gen settings from the ini and initializes m_BiomeGen accordingly

 	void InitBiomeGen(cIniFile & a_IniFile);

diff --git a/source/Generating/DistortedHeightmap.cpp b/source/Generating/DistortedHeightmap.cpp
new file mode 100644
index 000000000..b495aab22
--- /dev/null
+++ b/source/Generating/DistortedHeightmap.cpp
@@ -0,0 +1,341 @@
+

+// DistortedHeightmap.cpp

+

+// Implements the cDistortedHeightmap class representing the height and composition generator capable of overhangs

+

+#include "Globals.h"

+

+#include "DistortedHeightmap.h"

+#include "../OSSupport/File.h"

+#include "../../iniFile/iniFile.h"

+

+

+

+

+

+const cDistortedHeightmap::sGenParam cDistortedHeightmap::m_GenParam[biNumBiomes] =

+{

+	/* Biome              |    AmpX | AmpZ */

+	/* biOcean            */ { 1.5f,  1.5f},

+	/* biPlains           */ { 0.5f,  0.5f},

+	/* biDesert           */ { 0.5f,  0.5f},

+	/* biExtremeHills     */ {16.0f, 16.0f},

+	/* biForest           */ { 3.0f,  3.0f},

+	/* biTaiga            */ { 1.5f,  1.5f},

+	

+	/* biSwampland        */ { 0.0f,  0.0f},

+	/* biRiver            */ { 0.0f,  0.0f},

+	/* biNether           */ { 0.0f,  0.0f},  // Unused, but must be here due to indexing

+	/* biSky              */ { 0.0f,  0.0f},  // Unused, but must be here due to indexing

+	/* biFrozenOcean      */ { 0.0f,  0.0f},

+	/* biFrozenRiver      */ { 0.0f,  0.0f},

+	/* biIcePlains        */ { 0.0f,  0.0f},

+	/* biIceMountains     */ { 8.0f,  8.0f},

+	/* biMushroomIsland   */ { 4.0f,  4.0f},

+	/* biMushroomShore    */ { 0.0f,  0.0f},

+	/* biBeach            */ { 0.0f,  0.0f},

+	/* biDesertHills      */ { 5.0f,  5.0f},

+	/* biForestHills      */ { 6.0f,  6.0f},

+	/* biTaigaHills       */ { 8.0f,  8.0f},

+	/* biExtremeHillsEdge */ { 7.0f,  7.0f},

+	/* biJungle           */ { 0.0f,  0.0f},

+	/* biJungleHills      */ { 8.0f,  8.0f},

+} ;

+

+

+

+

+

+cDistortedHeightmap::cDistortedHeightmap(int a_Seed, cBiomeGen & a_BiomeGen) :

+	m_Noise1(a_Seed + 1000),

+	m_Noise2(a_Seed + 2000),

+	m_Noise3(a_Seed + 3000),

+	m_Noise4(a_Seed + 4000),

+	m_Noise5(a_Seed + 5000),

+	m_NoiseArrayX(m_NoiseArray),

+	m_NoiseArrayZ(m_NoiseArray + 17 * 17 * 32),

+	m_BiomeGen(a_BiomeGen),

+	m_HeightGen(new cHeiGenBiomal(a_Seed, a_BiomeGen), 64)

+{

+}

+

+

+

+

+

+void cDistortedHeightmap::Initialize(cIniFile & a_IniFile)

+{

+	// Read the params from the INI file:

+	m_SeaLevel   =                 a_IniFile.GetValueSetI("Generator", "DistortedHeightmapSeaLevel",   62);

+	m_FrequencyX = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyX", 10);

+	m_FrequencyY = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyY", 10);

+	m_FrequencyZ = (NOISE_DATATYPE)a_IniFile.GetValueSetF("Generator", "DistortedHeightmapFrequencyZ", 10);

+}

+

+

+

+

+

+void cDistortedHeightmap::PrepareState(int a_ChunkX, int a_ChunkZ)

+{

+	if ((m_CurChunkX == a_ChunkX) && (m_CurChunkZ == a_ChunkZ))

+	{

+		return;

+	}

+	m_CurChunkX = a_ChunkX;

+	m_CurChunkZ = a_ChunkZ;

+	

+	GenerateNoiseArray(m_NoiseArrayX, m_Noise1, m_Noise2, m_Noise3);

+	UpdateDistortAmps();

+}

+

+

+

+

+

+void cDistortedHeightmap::GenerateNoiseArray(NOISE_DATATYPE * a_NoiseArray, cNoise & a_Noise1, cNoise & a_Noise2, cNoise & a_Noise3)

+{

+	// Parameters:

+	const int INTERPOL_X = 8;

+	const int INTERPOL_Y = 4;

+	const int INTERPOL_Z = 8;

+	

+	ASSERT((NOISE_SIZE_Y % INTERPOL_Y) == 1);  // Interpolation needs to set the 0-th and the last element

+

+	int idx = 0;

+	for (int y = 0; y < NOISE_SIZE_Y; y += INTERPOL_Y)

+	{

+		NOISE_DATATYPE NoiseY = ((NOISE_DATATYPE)y) / m_FrequencyY;

+		NOISE_DATATYPE * CurFloor = &(a_NoiseArray[y * 17 * 17]);

+		for (int z = 0; z < 17; z += INTERPOL_Z)

+		{

+			NOISE_DATATYPE NoiseZ = ((NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + z)) / m_FrequencyZ;

+			for (int x = 0; x < 17; x += INTERPOL_X)

+			{

+				NOISE_DATATYPE NoiseX = ((NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + x)) / m_FrequencyX;

+				CurFloor[x + 17 * z] = 

+					a_Noise1.CubicNoise3D(NoiseX, NoiseY, NoiseZ) * (NOISE_DATATYPE)0.5 +

+					a_Noise2.CubicNoise3D(NoiseX / 2, NoiseY / 2, NoiseZ / 2) +

+					a_Noise3.CubicNoise3D(NoiseX / 4, NoiseY / 4, NoiseZ / 4) * 2;

+			}

+		}

+		// Linear-interpolate this XZ floor:

+		ArrayLinearInterpolate2D(CurFloor, 17, 17, INTERPOL_X, INTERPOL_Z);

+	}  // for y

+	

+	// Finish the 3D linear interpolation by interpolating between each XZ-floors on the Y axis

+	for (int y = 1; y < NOISE_SIZE_Y - 1; y++)

+	{

+		if ((y % INTERPOL_Y) == 0)

+		{

+			// This is the interpolation source floor, already calculated

+			continue;

+		}

+		int LoFloorY = (y / INTERPOL_Y) * INTERPOL_Y;

+		int HiFloorY = LoFloorY + INTERPOL_Y;

+		NOISE_DATATYPE * LoFloor  = &(a_NoiseArray[LoFloorY * 17 * 17]);

+		NOISE_DATATYPE * HiFloor  = &(a_NoiseArray[HiFloorY * 17 * 17]);

+		NOISE_DATATYPE * CurFloor = &(a_NoiseArray[y * 17 * 17]);

+		NOISE_DATATYPE Ratio = ((NOISE_DATATYPE)(y % INTERPOL_Y)) / INTERPOL_Y;

+		int idx = 0;

+		for (int z = 0; z < cChunkDef::Width; z++)

+		{

+			for (int x = 0; x < cChunkDef::Width; x++)

+			{

+				CurFloor[idx] = LoFloor[idx] + (HiFloor[idx] - LoFloor[idx]) * Ratio;

+				idx += 1;

+			}  // for x

+			idx += 1;  // Skipping one X column

+		}  // for z

+	}  // for y

+}

+

+

+

+

+

+void cDistortedHeightmap::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)

+{

+	PrepareState(a_ChunkX, a_ChunkZ);

+	for (int z = 0; z < cChunkDef::Width; z++)

+	{

+		for (int x = 0; x < cChunkDef::Width; x++)

+		{

+			int NoiseArrayIdx = x + 17 * z;

+			cChunkDef::SetHeight(a_HeightMap, x, z, m_SeaLevel - 1);

+			for (int y = cChunkDef::Height - 1; y > m_SeaLevel - 1; y--)

+			{

+				int HeightMapHeight = GetValue(NoiseArrayIdx + 17 * 17 * y, x, z);

+				if (y < HeightMapHeight)

+				{

+					cChunkDef::SetHeight(a_HeightMap, x, z, y);

+					break;

+				}

+			}  // for y

+		}  // for x

+	}  // for z

+}

+

+

+

+

+

+void cDistortedHeightmap::ComposeTerrain(cChunkDesc & a_ChunkDesc)

+{

+	PrepareState(a_ChunkDesc.GetChunkX(), a_ChunkDesc.GetChunkZ());

+	a_ChunkDesc.FillBlocks(E_BLOCK_AIR, 0);

+	for (int z = 0; z < cChunkDef::Width; z++)

+	{

+		for (int x = 0; x < cChunkDef::Width; x++)

+		{

+			int NoiseArrayIdx = x + 17 * z;

+			int LastAir = a_ChunkDesc.GetHeight(x, z) + 1;

+			bool HasHadWater = false;

+			for (int y = LastAir; y > 0; y--)

+			{

+				int HeightMapHeight = GetValue(NoiseArrayIdx + 17 * 17 * y, x, z);

+

+				if (y >= HeightMapHeight)

+				{

+					// "air" part

+					LastAir = y;

+					if (y < m_SeaLevel)

+					{

+						a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_STATIONARY_WATER);

+						HasHadWater = true;

+					}

+					continue;

+				}

+				// "ground" part:

+				if (LastAir - y > 4)

+				{

+					a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_STONE);

+					continue;

+				}

+				if (HasHadWater)

+				{

+					a_ChunkDesc.SetBlockType(x, y, z, E_BLOCK_SAND);

+				}

+				else

+				{

+					a_ChunkDesc.SetBlockType(x, y, z, (LastAir == y + 1) ? E_BLOCK_GRASS : E_BLOCK_DIRT);

+				}

+			}  // for y

+			a_ChunkDesc.SetBlockType(x, 0, z, E_BLOCK_BEDROCK);

+		}  // for x

+	}  // for z

+}

+

+

+

+

+

+int cDistortedHeightmap::GetHeightmapAt(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Z)

+{

+	int ChunkX = (int)floor(a_X / (NOISE_DATATYPE)16);

+	int ChunkZ = (int)floor(a_Z / (NOISE_DATATYPE)16);

+	int RelX = (int)(a_X - (NOISE_DATATYPE)ChunkX * cChunkDef::Width);

+	int RelZ = (int)(a_Z - (NOISE_DATATYPE)ChunkZ * cChunkDef::Width);

+	cChunkDef::HeightMap Heightmap;

+	m_HeightGen.GenHeightMap(ChunkX, ChunkZ, Heightmap);

+	return cChunkDef::GetHeight(Heightmap, RelX, RelZ);

+}

+

+

+

+

+

+int cDistortedHeightmap::GetValue(int a_NoiseArrayIdx, int a_RelX, int a_RelZ)

+{

+	int AmpIdx = a_RelX + 17 * a_RelZ;

+	NOISE_DATATYPE DistX = m_NoiseArrayX[a_NoiseArrayIdx] * m_DistortAmpX[AmpIdx];

+	NOISE_DATATYPE DistZ = m_NoiseArrayZ[a_NoiseArrayIdx] * m_DistortAmpZ[AmpIdx];

+	DistX += (NOISE_DATATYPE)(m_CurChunkX * cChunkDef::Width + a_RelX);

+	DistZ += (NOISE_DATATYPE)(m_CurChunkZ * cChunkDef::Width + a_RelZ);

+	return GetHeightmapAt(DistX, DistZ);

+}

+

+

+

+

+

+void cDistortedHeightmap::UpdateDistortAmps(void)

+{

+	BiomeNeighbors Biomes;

+	for (int z = -1; z <= 1; z++)

+	{

+		for (int x = -1; x <= 1; x++)

+		{

+			m_BiomeGen.GenBiomes(m_CurChunkX + x, m_CurChunkZ + z, Biomes[x + 1][z + 1]);

+		}  // for x

+	}  // for z

+

+	// Linearly interpolate 4x4 blocks of Amps:

+	const int STEPZ = 4;  // Must be a divisor of 16

+	const int STEPX = 4;  // Must be a divisor of 16

+	for (int z = 0; z < 17; z += STEPZ)

+	{

+		for (int x = 0; x < 17; x += STEPX)

+		{

+			GetDistortAmpsAt(Biomes, x, z, m_DistortAmpX[x + 17 * z], m_DistortAmpZ[x + 17 * z]);

+		}

+	}

+	ArrayLinearInterpolate2D(m_DistortAmpX, 17, 17, STEPX, STEPZ);

+	ArrayLinearInterpolate2D(m_DistortAmpZ, 17, 17, STEPX, STEPZ);

+}	

+

+

+

+

+

+void cDistortedHeightmap::GetDistortAmpsAt(BiomeNeighbors & a_Neighbors, int a_RelX, int a_RelZ, NOISE_DATATYPE & a_DistortAmpX, NOISE_DATATYPE & a_DistortAmpZ)

+{

+	// 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_Neighbors[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

+

+	if (Sum <= 0)

+	{

+		// No known biome around? Weird. Return a bogus value:

+		ASSERT(!"cHeiGenBiomal: Biome sum failed, no known biome around");

+		a_DistortAmpX = 16;

+		a_DistortAmpZ = 16;

+	}

+

+	// For each biome type that has a nonzero count, calc its amps and add it:

+	NOISE_DATATYPE AmpX = 0;

+	NOISE_DATATYPE AmpZ = 0;

+	for (int i = 0; i < ARRAYCOUNT(BiomeCounts); i++)

+	{

+		AmpX += BiomeCounts[i] * m_GenParam[i].m_DistortAmpX;

+		AmpZ += BiomeCounts[i] * m_GenParam[i].m_DistortAmpZ;

+	}

+	a_DistortAmpX = AmpX / Sum;

+	a_DistortAmpZ = AmpZ / Sum;

+}

+

+

+

+

diff --git a/source/Generating/DistortedHeightmap.h b/source/Generating/DistortedHeightmap.h
new file mode 100644
index 000000000..8c1b136b8
--- /dev/null
+++ b/source/Generating/DistortedHeightmap.h
@@ -0,0 +1,93 @@
+

+// DistortedHeightmap.h

+

+// Declares the cDistortedHeightmap class representing the height and composition generator capable of overhangs

+

+

+

+

+

+#pragma once

+

+#include "ComposableGenerator.h"

+#include "HeiGen.h"

+#include "../Noise.h"

+

+

+

+

+

+#define NOISE_SIZE_Y (257 + 32)

+

+

+

+

+

+class cDistortedHeightmap :

+	public cTerrainHeightGen,

+	public cTerrainCompositionGen

+{

+public:

+	cDistortedHeightmap(int a_Seed, cBiomeGen & a_BiomeGen);

+	

+	void Initialize(cIniFile & a_IniFile);

+	

+protected:

+	typedef cChunkDef::BiomeMap BiomeNeighbors[3][3];

+

+	cNoise m_Noise1;

+	cNoise m_Noise2;

+	cNoise m_Noise3;

+	cNoise m_Noise4;

+	cNoise m_Noise5;

+	

+	int m_SeaLevel;

+	NOISE_DATATYPE m_FrequencyX;

+	NOISE_DATATYPE m_FrequencyY;

+	NOISE_DATATYPE m_FrequencyZ;

+

+	int m_CurChunkX;

+	int m_CurChunkZ;

+	NOISE_DATATYPE m_NoiseArray[17 * 17 * NOISE_SIZE_Y];

+	NOISE_DATATYPE * m_NoiseArrayX;

+	NOISE_DATATYPE * m_NoiseArrayZ;

+

+	cBiomeGen &  m_BiomeGen;

+	cHeiGenCache m_HeightGen;  // This generator provides us with base heightmap (before distortion)

+	

+	// Per-biome terrain generator parameters:

+	struct sGenParam

+	{

+		NOISE_DATATYPE m_DistortAmpX;

+		NOISE_DATATYPE m_DistortAmpZ;

+	} ;

+	static const sGenParam m_GenParam[biNumBiomes];

+	

+	NOISE_DATATYPE m_DistortAmpX[17 * 17];

+	NOISE_DATATYPE m_DistortAmpZ[17 * 17];

+	

+

+	/// Unless the LastChunk coords are equal to coords given, prepares the internal state (noise arrays, heightmap)

+	void PrepareState(int a_ChunkX, int a_ChunkZ);

+	

+	/// Generates the 3D noise array using the specified noise objects

+	void GenerateNoiseArray(NOISE_DATATYPE * a_NoiseArray, cNoise & a_Noise1, cNoise & a_Noise2, cNoise & a_Noise3);

+	

+	/// Calculates the heightmap value (before distortion) at the specified (floating-point) coords

+	int GetHeightmapAt(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Z);

+	

+	/// Calculates the height (after distortion)

+	int GetValue(int a_NoiseArrayIdx, int a_RelX, int a_RelZ);

+	

+	/// Updates m_DistortAmpX/Z[] based on m_CurChunkX and m_CurChunkZ

+	void UpdateDistortAmps(void);

+	

+	/// Calculates the X and Z distortion amplitudes based on the neighbors' biomes

+	void GetDistortAmpsAt(BiomeNeighbors & a_Neighbors, int a_RelX, int a_RelZ, NOISE_DATATYPE & a_DistortAmpX, NOISE_DATATYPE & a_DistortAmpZ);

+	

+	// cTerrainHeightGen overrides:

+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;

+

+	// cTerrainCompositionGen overrides:

+	virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;

+} ;

diff --git a/source/Generating/HeiGen.cpp b/source/Generating/HeiGen.cpp
index fe69ef926..24042e3ff 100644
--- a/source/Generating/HeiGen.cpp
+++ b/source/Generating/HeiGen.cpp
@@ -62,11 +62,13 @@ cHeiGenCache::~cHeiGenCache()
 
 void cHeiGenCache::GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap)
 {
+	/*
 	if (((m_NumHits + m_NumMisses) % 1024) == 10)
 	{
 		LOGD("HeiGenCache: %d hits, %d misses, saved %.2f %%", m_NumHits, m_NumMisses, 100.0 * m_NumHits / (m_NumHits + m_NumMisses));
 		LOGD("HeiGenCache: Avg cache chain length: %.2f", (float)m_TotalChain / m_NumHits);
 	}
+	//*/
 	
 	for (int i = 0; i < m_CacheSize; i++)
 	{
diff --git a/source/Generating/HeiGen.h b/source/Generating/HeiGen.h
index a883330b3..3bdfef993 100644
--- a/source/Generating/HeiGen.h
+++ b/source/Generating/HeiGen.h
@@ -47,6 +47,9 @@ public:
 	cHeiGenCache(cTerrainHeightGen * a_HeiGenToCache, int a_CacheSize);  // Takes ownership of a_HeiGenToCache
 	~cHeiGenCache();
 	
+	// cTerrainHeightGen override:
+	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
+	
 protected:
 
 	cTerrainHeightGen * m_HeiGenToCache;
@@ -67,8 +70,6 @@ protected:
 	int m_NumHits;
 	int m_NumMisses;
 	int m_TotalChain;  // Number of cache items walked to get to a hit (only added for hits)
-	
-	virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
 } ;