83 lines
2.0 KiB
C
83 lines
2.0 KiB
C
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// LightingThread.h
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// Interfaces to the cLightingThread class representing the thread that processes requests for lighting
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// Note that the world generators need direct access to the lighting methods so that they can light the generated chunk
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#pragma once
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#include "cIsThread.h"
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// fwd:
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class cWorld;
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class cLightingThread :
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public cIsThread
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{
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typedef cIsThread super;
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public:
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class cLightingBuffer
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{
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public:
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cLightingBuffer(int m_MinX, int m_MaxX, int m_MinY, int m_MaxY, int m_MinZ, int m_MaxZ);
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/// Copies the world's existing chunks into m_BlockData, m_Skylight and m_BlockLight
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void GetFromWorld(cWorld * a_World);
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void SetToWorld (cWorld * a_World);
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void Process(void); // Does the actual lighting on this buffer
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protected:
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// Block coords:
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int m_MinX, m_MaxX;
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int m_MinY, m_MaxY;
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int m_MinZ, m_MaxZ;
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int m_StrideX; // = OffsetOfBlock(x, y, z) - OffsetOfBlock(x + 1, y, z)
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int m_StrideZ; // = OffsetOfBlock(x, y, z) - OffsetOfBlock(x, y, z + 1)
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// These buffers actually store 1 block in each direction more than is specified in the coords
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// This way we can throw out a lot of conditions inside the processing cycles
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// And it allows us to light a chunk with regard to its surrounding chunks without much work
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// (So if m_MinX is 16 and m_MaxX is 32, the buffers actually contain data for X in range from 15 to 33 (18 items)
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char * m_BlockData;
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char * m_SkyLight;
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char * m_BlockLight;
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} ;
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cLightingThread(void);
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~cLightingThread();
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void Stop(void);
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void QueueLighting(cWorld * a_World, int a_MinX, int a_MaxX, int a_MinY, int a_MaxY, int a_MinZ, int a_MaxZ); // queues the request
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protected:
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typedef std::list<cLightingBuffer *> cLightingBufferQueue;
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cCriticalSection m_CS;
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cLightingBufferQueue m_Queue;
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cEvent m_Event; // Set when queue is appended or to stop the thread
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virtual void Execute(void) override;
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} ;
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