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-rw-r--r--src/ChunkDataCallback.h127
1 files changed, 127 insertions, 0 deletions
diff --git a/src/ChunkDataCallback.h b/src/ChunkDataCallback.h
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+
+// ChunkDataCallback.h
+
+// Declares the cChunkDataCallback interface and several trivial descendants, for reading chunk data
+
+
+
+
+
+#pragma once
+
+#include "ChunkData.h"
+
+
+
+
+
+/** Interface class used for getting data out of a chunk using the GetAllData() function.
+Implementation must use the pointers immediately and NOT store any of them for later use
+The virtual methods are called in the same order as they're declared here.
+*/
+class cChunkDataCallback abstract
+{
+public:
+
+ virtual ~cChunkDataCallback() {}
+
+ /** Called before any other callbacks to inform of the current coords
+ (only in processes where multiple chunks can be processed, such as cWorld::ForEachChunkInRect()).
+ If false is returned, the chunk is skipped.
+ */
+ virtual bool Coords(int a_ChunkX, int a_ChunkZ) { UNUSED(a_ChunkX); UNUSED(a_ChunkZ); return true; };
+
+ /// Called once to provide heightmap data
+ virtual void HeightMap(const cChunkDef::HeightMap * a_HeightMap) {UNUSED(a_HeightMap); };
+
+ /// Called once to provide biome data
+ virtual void BiomeData(const cChunkDef::BiomeMap * a_BiomeMap) {UNUSED(a_BiomeMap); };
+
+ /// Called once to let know if the chunk lighting is valid. Return value is ignored
+ virtual void LightIsValid(bool a_IsLightValid) {UNUSED(a_IsLightValid); };
+
+ /// Called once to export block info
+ virtual void ChunkData(const cChunkData & a_Buffer) {UNUSED(a_Buffer); };
+
+ /// Called for each entity in the chunk
+ virtual void Entity(cEntity * a_Entity) {UNUSED(a_Entity); };
+
+ /// Called for each blockentity in the chunk
+ virtual void BlockEntity(cBlockEntity * a_Entity) {UNUSED(a_Entity); };
+} ;
+
+
+
+
+
+/** A simple implementation of the cChunkDataCallback interface that collects all block data into a buffer
+*/
+class cChunkDataCollector :
+ public cChunkDataCallback
+{
+public:
+
+ cChunkData m_BlockData;
+
+protected:
+
+ virtual void ChunkData(const cChunkData & a_BlockData) override
+ {
+ m_BlockData = a_BlockData.Copy();
+ }
+};
+
+
+
+
+
+/** A simple implementation of the cChunkDataCallback interface that collects all block data into a single buffer
+*/
+class cChunkDataArrayCollector :
+ public cChunkDataCallback
+{
+public:
+
+ // Must be unsigned char instead of BLOCKTYPE or NIBBLETYPE, because it houses both.
+ unsigned char m_BlockData[cChunkDef::BlockDataSize];
+
+protected:
+
+ virtual void ChunkData(const cChunkData & a_ChunkBuffer) override
+ {
+ a_ChunkBuffer.CopyBlockTypes(m_BlockData);
+ a_ChunkBuffer.CopyMetas(m_BlockData + cChunkDef::NumBlocks);
+ a_ChunkBuffer.CopyBlockLight(m_BlockData + 3 * cChunkDef::NumBlocks / 2);
+ a_ChunkBuffer.CopySkyLight(m_BlockData + 2 * cChunkDef::NumBlocks);
+ }
+};
+
+
+
+
+
+/** A simple implementation of the cChunkDataCallback interface that collects all block data into separate buffers */
+class cChunkDataSeparateCollector :
+ public cChunkDataCallback
+{
+public:
+
+ cChunkDef::BlockTypes m_BlockTypes;
+ cChunkDef::BlockNibbles m_BlockMetas;
+ cChunkDef::BlockNibbles m_BlockLight;
+ cChunkDef::BlockNibbles m_BlockSkyLight;
+
+protected:
+
+ virtual void ChunkData(const cChunkData & a_ChunkBuffer) override
+ {
+ a_ChunkBuffer.CopyBlockTypes(m_BlockTypes);
+ a_ChunkBuffer.CopyMetas(m_BlockMetas);
+ a_ChunkBuffer.CopyBlockLight(m_BlockLight);
+ a_ChunkBuffer.CopySkyLight(m_BlockSkyLight);
+ }
+} ;
+
+
+
+