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| author | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2012-03-07 12:28:24 +0100 |
|---|---|---|
| committer | madmaxoft@gmail.com <madmaxoft@gmail.com@0a769ca7-a7f5-676a-18bf-c427514a06d6> | 2012-03-07 12:28:24 +0100 |
| commit | 69a4ee53830121714927c37e4f0b9a357cd03957 (patch) | |
| tree | a743079aabb0d1542b1ef2a025acb167d91818a6 /source/WSSAnvil.h | |
| parent | Sticky pistons should work as well now (diff) | |
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Diffstat (limited to '')
| -rw-r--r-- | source/WSSAnvil.h | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/source/WSSAnvil.h b/source/WSSAnvil.h new file mode 100644 index 000000000..f02a30119 --- /dev/null +++ b/source/WSSAnvil.h @@ -0,0 +1,95 @@ +
+// WSSAnvil.h
+
+// Interfaces to the cWSSAnvil class representing the Anvil world storage scheme
+
+
+
+
+#pragma once
+
+#include "WorldStorage.h"
+
+
+
+
+
+enum
+{
+ // The MCA header is 8 KiB
+ MCA_HEADER_SIZE = 8192,
+} ;
+
+
+
+
+
+// fwd: "NBT.h"
+class cNBTTag;
+
+
+
+
+
+class cWSSAnvil :
+ public cWSSchema
+{
+ typedef cWSSchema super;
+
+public:
+
+ cWSSAnvil(cWorld * a_World) : super(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);
+
+ 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
+ // The next 1024 entries are chunk timestamps - unused in MCS
+ unsigned m_Header[MCA_HEADER_SIZE / sizeof(unsigned)];
+ } ;
+ 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 CS as needed
+ bool GetChunkData(const cChunkCoords & a_Chunk, AString & a_Data);
+
+ /// Loads the chunk from the data (no locking needed)
+ bool LoadChunkFromData(const cChunkCoords & a_Chunk, const AString & a_Data);
+
+ /// Loads the chunk from NBT data (no locking needed)
+ bool LoadChunkFromNBT(const cChunkCoords & a_Chunk, cNBTTag & a_NBT);
+
+ /// 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);
+
+ // 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"; }
+} ;
+
+
+
+
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