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// CompoGen.h
/* Interfaces to the various terrain composition generators:
- cCompoGenSameBlock
- cCompoGenDebugBiomes
- cCompoGenClassic
- cCompoGenBiomal
- cCompoGenNether
- cCompoGenCache
*/
#pragma once
#include "ComposableGenerator.h"
#include "../Noise/Noise.h"
class cCompoGenSameBlock : public cTerrainCompositionGen
{
public:
cCompoGenSameBlock(void) :
m_BlockType(E_BLOCK_STONE), m_IsBedrocked(true)
{
}
protected:
BLOCKTYPE m_BlockType;
bool m_IsBedrocked;
// cTerrainCompositionGen overrides:
virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
};
class cCompoGenDebugBiomes : public cTerrainCompositionGen
{
public:
cCompoGenDebugBiomes(void) {}
protected:
// cTerrainCompositionGen overrides:
virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
};
class cCompoGenClassic : public cTerrainCompositionGen
{
public:
cCompoGenClassic(void);
protected:
int m_SeaLevel;
int m_BeachHeight;
int m_BeachDepth;
BLOCKTYPE m_BlockTop;
BLOCKTYPE m_BlockMiddle;
BLOCKTYPE m_BlockBottom;
BLOCKTYPE m_BlockBeach;
BLOCKTYPE m_BlockBeachBottom;
BLOCKTYPE m_BlockSea;
// cTerrainCompositionGen overrides:
virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
};
class cCompoGenNether : public cTerrainCompositionGen
{
public:
cCompoGenNether(int a_Seed);
protected:
cNoise m_Noise1;
cNoise m_Noise2;
double m_MaxThreshold;
// cTerrainCompositionGen overrides:
virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
};
/** Caches most-recently-used chunk composition of another composition generator. Caches only the types and metas */
class cCompoGenCache : public cTerrainCompositionGen
{
public:
cCompoGenCache(std::unique_ptr<cTerrainCompositionGen> a_Underlying, int a_CacheSize);
virtual ~cCompoGenCache() override;
// cTerrainCompositionGen override:
virtual void ComposeTerrain(cChunkDesc & a_ChunkDesc, const cChunkDesc::Shape & a_Shape) override;
virtual void InitializeCompoGen(cIniFile & a_IniFile) override;
protected:
std::unique_ptr<cTerrainCompositionGen> m_Underlying;
struct sCacheData
{
int m_ChunkX;
int m_ChunkZ;
cChunkDef::BlockTypes m_BlockTypes;
cChunkDesc::BlockNibbleBytes m_BlockMetas; // The metas are uncompressed, 1 meta per byte
cChunkDef::HeightMap m_HeightMap;
};
// To avoid moving large amounts of data for the MRU behavior, we MRU-ize indices to an array of the actual data
int m_CacheSize;
int * m_CacheOrder; // MRU-ized order, indices into m_CacheData array
sCacheData * m_CacheData; // m_CacheData[m_CacheOrder[0]] is the most recently used
// Cache statistics
int m_NumHits;
int m_NumMisses;
int m_TotalChain; // Number of cache items walked to get to a hit (only added for hits)
};
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