134 lines
3.9 KiB
C++
134 lines
3.9 KiB
C++
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// ChunkData.h
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// Declares the cChunkData class that represents the block's type, meta, blocklight and skylight storage for a chunk
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#pragma once
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#include <cstring>
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#include "ChunkDef.h"
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#include "AllocationPool.h"
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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#else
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// unique_ptr style interface for memory management
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#endif
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class cChunkData
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{
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private:
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static const size_t SectionHeight = 16;
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static const size_t NumSections = (cChunkDef::Height / SectionHeight);
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static const size_t SectionBlockCount = SectionHeight * cChunkDef::Width * cChunkDef::Width;
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public:
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struct sChunkSection;
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cChunkData(cAllocationPool<cChunkData::sChunkSection> & a_Pool);
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~cChunkData();
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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cChunkData(const cChunkData & a_Other);
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cChunkData & operator =(const cChunkData & a_Other);
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#else
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// unique_ptr style interface for memory management
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cChunkData(cChunkData && a_Other);
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cChunkData & operator =(cChunkData && a_ther);
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#endif
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BLOCKTYPE GetBlock(int a_X, int a_Y, int a_Z) const;
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void SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block);
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NIBBLETYPE GetMeta(int a_RelX, int a_RelY, int a_RelZ) const;
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bool SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Nibble);
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NIBBLETYPE GetBlockLight(int a_RelX, int a_RelY, int a_RelZ) const;
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NIBBLETYPE GetSkyLight(int a_RelX, int a_RelY, int a_RelZ) const;
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/** Creates a (deep) copy of self. */
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cChunkData Copy(void) const;
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/** Copies the blocktype data into the specified flat array.
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Optionally, only a part of the data is copied, as specified by the a_Idx and a_Length parameters. */
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void CopyBlockTypes(BLOCKTYPE * a_Dest, size_t a_Idx = 0, size_t a_Length = cChunkDef::NumBlocks) const;
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/** Copies the metadata into the specified flat array. */
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void CopyMetas(NIBBLETYPE * a_Dest) const;
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/** Copies the block light data into the specified flat array. */
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void CopyBlockLight(NIBBLETYPE * a_Dest) const;
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/** Copies the skylight data into the specified flat array. */
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void CopySkyLight (NIBBLETYPE * a_Dest) const;
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/** Copies the blocktype data from the specified flat array into the internal representation.
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Allocates sections that are needed for the operation.
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Requires that a_Src is a valid pointer. */
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void SetBlockTypes(const BLOCKTYPE * a_Src);
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/** Copies the metadata from the specified flat array into the internal representation.
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Allocates sectios that are needed for the operation.
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Requires that a_Src is a valid pointer. */
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void SetMetas(const NIBBLETYPE * a_Src);
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/** Copies the blocklight data from the specified flat array into the internal representation.
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Allocates sectios that are needed for the operation.
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Allows a_Src to be nullptr, in which case it doesn't do anything. */
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void SetBlockLight(const NIBBLETYPE * a_Src);
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/** Copies the skylight data from the specified flat array into the internal representation.
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Allocates sectios that are needed for the operation.
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Allows a_Src to be nullptr, in which case it doesn't do anything. */
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void SetSkyLight(const NIBBLETYPE * a_Src);
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struct sChunkSection
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{
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BLOCKTYPE m_BlockTypes [SectionHeight * 16 * 16] ;
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NIBBLETYPE m_BlockMetas [SectionHeight * 16 * 16 / 2];
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NIBBLETYPE m_BlockLight [SectionHeight * 16 * 16 / 2];
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NIBBLETYPE m_BlockSkyLight[SectionHeight * 16 * 16 / 2];
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};
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private:
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#if __cplusplus < 201103L
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// auto_ptr style interface for memory management
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mutable bool m_IsOwner;
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#endif
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sChunkSection * m_Sections[NumSections];
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cAllocationPool<cChunkData::sChunkSection> & m_Pool;
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/** Allocates a new section. Entry-point to custom allocators. */
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sChunkSection * Allocate(void);
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/** Frees the specified section, previously allocated using Allocate().
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Note that a_Section may be nullptr. */
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void Free(sChunkSection * a_Section);
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/** Sets the data in the specified section to their default values. */
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void ZeroSection(sChunkSection * a_Section) const;
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};
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