1 files changed, 125 insertions, 0 deletions

diff --git a/src/ChunkData.h b/src/ChunkData.h
new file mode 100644
index 000000000..fef31b5ad
--- /dev/null
+++ b/src/ChunkData.h
@@ -0,0 +1,125 @@
+
+// ChunkData.h
+
+// Declares the cChunkData class that represents the block's type, meta, blocklight and skylight storage for a chunk
+
+
+
+
+
+#pragma once
+
+
+#include <cstring>
+
+
+#include "ChunkDef.h"
+
+
+
+
+#if __cplusplus < 201103L
+// auto_ptr style interface for memory management
+#else
+// unique_ptr style interface for memory management
+#endif
+
+class cChunkData
+{
+public:
+
+	cChunkData(void);
+	~cChunkData();
+	
+	#if __cplusplus < 201103L
+		// auto_ptr style interface for memory management
+		cChunkData(const cChunkData & a_Other);
+		cChunkData & operator =(const cChunkData & a_Other);
+	#else
+		// unique_ptr style interface for memory management
+		cChunkData(cChunkData && a_Other);
+		cChunkData & operator =(cChunkData && a_ther);
+	#endif
+
+	BLOCKTYPE GetBlock(int a_X, int a_Y, int a_Z) const;
+	void SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block);
+
+	NIBBLETYPE GetMeta(int a_RelX, int a_RelY, int a_RelZ) const;
+	bool SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Nibble);
+	
+	NIBBLETYPE GetBlockLight(int a_RelX, int a_RelY, int a_RelZ) const;
+	
+	NIBBLETYPE GetSkyLight(int a_RelX, int a_RelY, int a_RelZ) const;
+	
+	/** Creates a (deep) copy of self. */
+	cChunkData Copy(void) const;
+	
+	/** Copies the blocktype data into the specified flat array.
+	Optionally, only a part of the data is copied, as specified by the a_Idx and a_Length parameters. */
+	void CopyBlockTypes(BLOCKTYPE * a_Dest, size_t a_Idx = 0, size_t a_Length = cChunkDef::NumBlocks) const;
+	
+	/** Copies the metadata into the specified flat array. */
+	void CopyMetas(NIBBLETYPE * a_Dest) const;
+	
+	/** Copies the block light data into the specified flat array. */
+	void CopyBlockLight(NIBBLETYPE * a_Dest) const;
+	
+	/** Copies the skylight data into the specified flat array. */
+	void CopySkyLight  (NIBBLETYPE * a_Dest) const;
+	
+	/** Copies the blocktype data from the specified flat array into the internal representation.
+	Allocates sections that are needed for the operation.
+	Requires that a_Src is a valid pointer. */
+	void SetBlockTypes(const BLOCKTYPE * a_Src);
+	
+	/** Copies the metadata from the specified flat array into the internal representation.
+	Allocates sectios that are needed for the operation.
+	Requires that a_Src is a valid pointer. */
+	void SetMetas(const NIBBLETYPE * a_Src);
+	
+	/** Copies the blocklight data from the specified flat array into the internal representation.
+	Allocates sectios that are needed for the operation.
+	Allows a_Src to be NULL, in which case it doesn't do anything. */
+	void SetBlockLight(const NIBBLETYPE * a_Src);
+
+	/** Copies the skylight data from the specified flat array into the internal representation.
+	Allocates sectios that are needed for the operation.
+	Allows a_Src to be NULL, in which case it doesn't do anything. */
+	void SetSkyLight(const NIBBLETYPE * a_Src);
+	
+private:
+
+	static const size_t SectionHeight = 16;
+	static const size_t NumSections = (cChunkDef::Height / SectionHeight);
+	static const size_t SectionBlockCount = SectionHeight * cChunkDef::Width * cChunkDef::Width;
+
+	#if __cplusplus < 201103L
+	// auto_ptr style interface for memory management
+	mutable bool m_IsOwner;
+	#endif
+	
+	struct sChunkSection {
+		BLOCKTYPE  m_BlockTypes   [SectionBlockCount];
+		NIBBLETYPE m_BlockMetas   [SectionBlockCount / 2];
+		NIBBLETYPE m_BlockLight   [SectionBlockCount / 2];
+		NIBBLETYPE m_BlockSkyLight[SectionBlockCount / 2];
+	};
+	
+	sChunkSection * m_Sections[NumSections];
+	
+	/** Allocates a new section. Entry-point to custom allocators. */
+	static sChunkSection * Allocate(void);
+	
+	/** Frees the specified section, previously allocated using Allocate().
+	Note that a_Section may be NULL. */
+	static void Free(sChunkSection * a_Section);
+	
+	/** Sets the data in the specified section to their default values. */
+	void ZeroSection(sChunkSection * a_Section) const;
+};
+
+
+
+
+
+