7219e74c7c
git-svn-id: http://mc-server.googlecode.com/svn/trunk@385 0a769ca7-a7f5-676a-18bf-c427514a06d6
109 lines
2.9 KiB
C++
109 lines
2.9 KiB
C++
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// WSSAnvil.h
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// Interfaces to the cWSSAnvil class representing the Anvil world storage scheme
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#pragma once
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#include "WorldStorage.h"
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enum
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{
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// The MCA header is 8 KiB
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MCA_HEADER_SIZE = 8192,
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} ;
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// fwd: "NBT.h"
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class cNBTTag;
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class cNBTList;
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class cNBTCompound;
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class cWSSAnvil :
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public cWSSchema
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{
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typedef cWSSchema super;
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public:
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cWSSAnvil(cWorld * a_World) : super(a_World) {}
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virtual ~cWSSAnvil();
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protected:
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class cMCAFile
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{
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public:
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cMCAFile(const AString & a_FileName, int a_RegionX, int a_RegionZ);
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bool GetChunkData(const cChunkCoords & a_Chunk, AString & a_Data);
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int GetRegionX (void) const {return m_RegionX; }
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int GetRegionZ (void) const {return m_RegionZ; }
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const AString & GetFileName(void) const {return m_FileName; }
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protected:
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int m_RegionX;
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int m_RegionZ;
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cFile m_File;
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AString m_FileName;
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// The header, copied from the file so we don't have to seek to it all the time
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// First 1024 entries are chunk locations - the 3 + 1 byte sector-offset and sector-count
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// The next 1024 entries are chunk timestamps - unused in MCS
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unsigned m_Header[MCA_HEADER_SIZE / sizeof(unsigned)];
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} ;
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typedef std::list<cMCAFile *> cMCAFiles;
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cCriticalSection m_CS;
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cMCAFiles m_Files; // a MRU cache of MCA files
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/// Gets chunk data from the correct file; locks CS as needed
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bool GetChunkData(const cChunkCoords & a_Chunk, AString & a_Data);
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/// Loads the chunk from the data (no locking needed)
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bool LoadChunkFromData(const cChunkCoords & a_Chunk, const AString & a_Data);
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/// Loads the chunk from NBT data (no locking needed)
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bool LoadChunkFromNBT(const cChunkCoords & a_Chunk, cNBTTag & a_NBT);
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/// Loads the chunk's entities from NBT data (a_NBT is the Level\\Entities list tag; may be NULL)
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void LoadEntitiesFromNBT(cEntityList & a_Entitites, const cNBTList * a_NBT);
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/// Loads the chunk's BlockEntities from NBT data (a_NBT is the Level\\TileEntities list tag; may be NULL)
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void LoadBlockEntitiesFromNBT(cBlockEntityList & a_BlockEntitites, const cNBTList * a_NBT);
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void LoadChestFromNBT(cBlockEntityList & a_BlockEntities, const cNBTCompound * a_NBT);
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/// Helper function for extracting the X, Y, and Z int subtags of a NBT compound; returns true if successful
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bool GetBlockEntityNBTPos(const cNBTCompound * a_NBT, int & a_X, int & a_Y, int & a_Z);
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/// Gets the correct MCA file either from cache or from disk, manages the m_MCAFiles cache; assumes m_CS is locked
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cMCAFile * LoadMCAFile(const cChunkCoords & a_Chunk);
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// cWSSchema overrides:
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virtual bool LoadChunk(const cChunkCoords & a_Chunk) override;
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virtual bool SaveChunk(const cChunkCoords & a_Chunk) override;
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virtual const AString GetName(void) const override {return "anvil"; }
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} ;
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