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Diffstat (limited to 'src/WorldStorage/WSSAnvil.h')
| -rw-r--r-- | src/WorldStorage/WSSAnvil.h | 184 |
1 files changed, 184 insertions, 0 deletions
diff --git a/src/WorldStorage/WSSAnvil.h b/src/WorldStorage/WSSAnvil.h new file mode 100644 index 000000000..7685d2236 --- /dev/null +++ b/src/WorldStorage/WSSAnvil.h @@ -0,0 +1,184 @@ + +// WSSAnvil.h + +// Interfaces to the cWSSAnvil class representing the Anvil world storage scheme + + + + +#pragma once + +#include "WorldStorage.h" +#include "FastNBT.h" + + + + + +// fwd: ItemGrid.h +class cItemGrid; + +class cProjectileEntity; + + + + + +enum +{ + /// Maximum number of chunks in an MCA file - also the count of the header items + MCA_MAX_CHUNKS = 32 * 32, + + /// The MCA header is 8 KiB + MCA_HEADER_SIZE = MCA_MAX_CHUNKS * 8, + + /// There are 5 bytes of header in front of each chunk + MCA_CHUNK_HEADER_LENGTH = 5, +} ; + + + + + +class cWSSAnvil : + public cWSSchema +{ + typedef cWSSchema super; + +public: + + cWSSAnvil(cWorld * a_World); + virtual ~cWSSAnvil(); + +protected: + + class cMCAFile + { + public: + + cMCAFile(const AString & a_FileName, int a_RegionX, int a_RegionZ); + + bool GetChunkData (const cChunkCoords & a_Chunk, AString & a_Data); + bool SetChunkData (const cChunkCoords & a_Chunk, const AString & a_Data); + bool EraseChunkData(const cChunkCoords & a_Chunk); + + int GetRegionX (void) const {return m_RegionX; } + int GetRegionZ (void) const {return m_RegionZ; } + const AString & GetFileName(void) const {return m_FileName; } + + protected: + + int m_RegionX; + int m_RegionZ; + cFile m_File; + AString m_FileName; + + // The header, copied from the file so we don't have to seek to it all the time + // First 1024 entries are chunk locations - the 3 + 1 byte sector-offset and sector-count + unsigned m_Header[MCA_MAX_CHUNKS]; + + // Chunk timestamps, following the chunk headers, are unused by MCS + + /// Finds a free location large enough to hold a_Data. Gets a hint of the chunk coords, places the data there if it fits. Returns the sector number. + unsigned FindFreeLocation(int a_LocalX, int a_LocalZ, const AString & a_Data); + + /// Opens a MCA file either for a Read operation (fails if doesn't exist) or for a Write operation (creates new if not found) + bool OpenFile(bool a_IsForReading); + } ; + typedef std::list<cMCAFile *> cMCAFiles; + + cCriticalSection m_CS; + cMCAFiles m_Files; // a MRU cache of MCA files + + /// Gets chunk data from the correct file; locks file CS as needed + bool GetChunkData(const cChunkCoords & a_Chunk, AString & a_Data); + + /// Sets chunk data into the correct file; locks file CS as needed + bool SetChunkData(const cChunkCoords & a_Chunk, const AString & a_Data); + + /// Loads the chunk from the data (no locking needed) + bool LoadChunkFromData(const cChunkCoords & a_Chunk, const AString & a_Data); + + /// Saves the chunk into datastream (no locking needed) + bool SaveChunkToData(const cChunkCoords & a_Chunk, AString & a_Data); + + /// Loads the chunk from NBT data (no locking needed) + bool LoadChunkFromNBT(const cChunkCoords & a_Chunk, const cParsedNBT & a_NBT); + + /// Saves the chunk into NBT data using a_Writer; returns true on success + bool SaveChunkToNBT(const cChunkCoords & a_Chunk, cFastNBTWriter & a_Writer); + + /// Loads the chunk's biome map from vanilla-format; returns a_BiomeMap if biomes present and valid, NULL otherwise + cChunkDef::BiomeMap * LoadVanillaBiomeMapFromNBT(cChunkDef::BiomeMap * a_BiomeMap, const cParsedNBT & a_NBT, int a_TagIdx); + + /// Loads the chunk's biome map from MCS format; returns a_BiomeMap if biomes present and valid, NULL otherwise + cChunkDef::BiomeMap * LoadBiomeMapFromNBT(cChunkDef::BiomeMap * a_BiomeMap, const cParsedNBT & a_NBT, int a_TagIdx); + + /// Loads the chunk's entities from NBT data (a_Tag is the Level\\Entities list tag; may be -1) + void LoadEntitiesFromNBT(cEntityList & a_Entitites, const cParsedNBT & a_NBT, int a_Tag); + + /// Loads the chunk's BlockEntities from NBT data (a_Tag is the Level\\TileEntities list tag; may be -1) + void LoadBlockEntitiesFromNBT(cBlockEntityList & a_BlockEntitites, const cParsedNBT & a_NBT, int a_Tag, BLOCKTYPE * a_BlockTypes, NIBBLETYPE * a_BlockMetas); + + /// Loads a cItem contents from the specified NBT tag; returns true if successful. Doesn't load the Slot tag + bool LoadItemFromNBT(cItem & a_Item, const cParsedNBT & a_NBT, int a_TagIdx); + + /** Loads contentents of an Items[] list tag into a cItemGrid + ItemGrid begins at the specified slot offset + Slots outside the ItemGrid range are ignored + */ + void LoadItemGridFromNBT(cItemGrid & a_ItemGrid, const cParsedNBT & a_NBT, int a_ItemsTagIdx, int s_SlotOffset = 0); + + void LoadChestFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadDispenserFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadDropperFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadFurnaceFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx, BLOCKTYPE * a_BlockTypes, NIBBLETYPE * a_BlockMetas); + void LoadHopperFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadJukeboxFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadNoteFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadSignFromNBT (cBlockEntityList & a_BlockEntities, const cParsedNBT & a_NBT, int a_TagIdx); + + void LoadEntityFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_EntityTagIdx, const char * a_IDTag, int a_IDTagLength); + + void LoadBoatFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadFallingBlockFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadMinecartRFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadMinecartCFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadMinecartFFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadMinecartTFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadMinecartHFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadPickupFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadArrowFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadSnowballFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadEggFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadFireballFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadFireChargeFromNBT (cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + void LoadThrownEnderpearlFromNBT(cEntityList & a_Entities, const cParsedNBT & a_NBT, int a_TagIdx); + + /// Loads entity common data from the NBT compound; returns true if successful + bool LoadEntityBaseFromNBT(cEntity & a_Entity, const cParsedNBT & a_NBT, int a_TagIdx); + + /// Loads projectile common data from the NBT compound; returns true if successful + bool LoadProjectileBaseFromNBT(cProjectileEntity & a_Entity, const cParsedNBT & a_NBT, int a_TagIx); + + /// Loads an array of doubles of the specified length from the specified NBT list tag a_TagIdx; returns true if successful + bool LoadDoublesListFromNBT(double * a_Doubles, int a_NumDoubles, const cParsedNBT & a_NBT, int a_TagIdx); + + /// Helper function for extracting the X, Y, and Z int subtags of a NBT compound; returns true if successful + bool GetBlockEntityNBTPos(const cParsedNBT & a_NBT, int a_TagIdx, int & a_X, int & a_Y, int & a_Z); + + /// Gets the correct MCA file either from cache or from disk, manages the m_MCAFiles cache; assumes m_CS is locked + cMCAFile * LoadMCAFile(const cChunkCoords & a_Chunk); + + /// Copies a_Length bytes of data from the specified NBT Tag's Child into the a_Destination buffer + void CopyNBTData(const cParsedNBT & a_NBT, int a_Tag, const AString & a_ChildName, char * a_Destination, int a_Length); + + // cWSSchema overrides: + virtual bool LoadChunk(const cChunkCoords & a_Chunk) override; + virtual bool SaveChunk(const cChunkCoords & a_Chunk) override; + virtual const AString GetName(void) const override {return "anvil"; } +} ; + + + + |