270560a198
git-svn-id: http://mc-server.googlecode.com/svn/trunk@1445 0a769ca7-a7f5-676a-18bf-c427514a06d6
94 lines
2.5 KiB
C++
94 lines
2.5 KiB
C++
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// DistortedHeightmap.h
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// Declares the cDistortedHeightmap class representing the height and composition generator capable of overhangs
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#pragma once
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#include "ComposableGenerator.h"
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#include "HeiGen.h"
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#include "../Noise.h"
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#define NOISE_SIZE_Y (257 + 32)
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class cDistortedHeightmap :
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public cTerrainHeightGen,
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public cTerrainCompositionGen
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{
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public:
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cDistortedHeightmap(int a_Seed, cBiomeGen & a_BiomeGen);
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void Initialize(cIniFile & a_IniFile);
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protected:
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typedef cChunkDef::BiomeMap BiomeNeighbors[3][3];
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cNoise m_Noise1;
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cNoise m_Noise2;
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cNoise m_Noise3;
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cNoise m_Noise4;
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cNoise m_Noise5;
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int m_SeaLevel;
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NOISE_DATATYPE m_FrequencyX;
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NOISE_DATATYPE m_FrequencyY;
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NOISE_DATATYPE m_FrequencyZ;
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int m_CurChunkX;
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int m_CurChunkZ;
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NOISE_DATATYPE m_NoiseArray[17 * 17 * NOISE_SIZE_Y];
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NOISE_DATATYPE * m_NoiseArrayX;
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NOISE_DATATYPE * m_NoiseArrayZ;
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cBiomeGen & m_BiomeGen;
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cHeiGenCache m_HeightGen; // This generator provides us with base heightmap (before distortion)
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// Per-biome terrain generator parameters:
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struct sGenParam
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{
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NOISE_DATATYPE m_DistortAmpX;
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NOISE_DATATYPE m_DistortAmpZ;
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} ;
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static const sGenParam m_GenParam[biNumBiomes];
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NOISE_DATATYPE m_DistortAmpX[17 * 17];
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NOISE_DATATYPE m_DistortAmpZ[17 * 17];
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/// Unless the LastChunk coords are equal to coords given, prepares the internal state (noise arrays, heightmap)
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void PrepareState(int a_ChunkX, int a_ChunkZ);
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/// Generates the 3D noise array using the specified noise objects
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void GenerateNoiseArray(NOISE_DATATYPE * a_NoiseArray, cNoise & a_Noise1, cNoise & a_Noise2, cNoise & a_Noise3);
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/// Calculates the heightmap value (before distortion) at the specified (floating-point) coords
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int GetHeightmapAt(NOISE_DATATYPE a_X, NOISE_DATATYPE a_Z);
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/// Calculates the height (after distortion)
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int GetValue(int a_NoiseArrayIdx, int a_RelX, int a_RelZ);
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/// Updates m_DistortAmpX/Z[] based on m_CurChunkX and m_CurChunkZ
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void UpdateDistortAmps(void);
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/// Calculates the X and Z distortion amplitudes based on the neighbors' biomes
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void GetDistortAmpsAt(BiomeNeighbors & a_Neighbors, int a_RelX, int a_RelZ, NOISE_DATATYPE & a_DistortAmpX, NOISE_DATATYPE & a_DistortAmpZ);
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// cTerrainHeightGen overrides:
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virtual void GenHeightMap(int a_ChunkX, int a_ChunkZ, cChunkDef::HeightMap & a_HeightMap) override;
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// cTerrainCompositionGen overrides:
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virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc) override;
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} ;
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