138 lines
3.0 KiB
C++
138 lines
3.0 KiB
C++
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// BiomeMap.cpp
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// Implements the cBiomeMap class representing a cCallback descendant that draws a map of biomes for the world
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#include "Globals.h"
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#include "BiomeMap.h"
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#include "../BiomeVisualiser/BiomeColors.h"
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static const unsigned char g_BMPHeader[] =
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{
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0x42, 0x4D, 0x36, 0x00, 0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x36, 0x00, 0x00, 0x00, 0x28, 0x00,
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0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0xfe, 0xff, 0xff, 0x01, 0x00, 0x20, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x13, 0x0B, 0x00, 0x00, 0x00, 0x00,
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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} ;
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cBiomeMap::cBiomeMap(void) :
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m_CurrentRegionX(0),
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m_CurrentRegionZ(0),
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m_IsCurrentRegionValid(false)
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{
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}
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void cBiomeMap::Finish(void)
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{
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if (m_IsCurrentRegionValid)
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{
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StartNewRegion(0, 0);
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}
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}
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bool cBiomeMap::OnNewChunk(int a_ChunkX, int a_ChunkZ)
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{
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int RegionX = (a_ChunkX < 0) ? (a_ChunkX - 31) / 32 : a_ChunkX / 32;
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int RegionZ = (a_ChunkZ < 0) ? (a_ChunkZ - 31) / 32 : a_ChunkZ / 32;
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if ((RegionX != m_CurrentRegionX) || (RegionZ != m_CurrentRegionZ))
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{
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if (m_IsCurrentRegionValid)
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{
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StartNewRegion(RegionX, RegionZ);
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}
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m_CurrentRegionX = RegionX;
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m_CurrentRegionZ = RegionZ;
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}
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m_IsCurrentRegionValid = true;
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m_CurrentChunkX = a_ChunkX;
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m_CurrentChunkZ = a_ChunkZ;
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m_CurrentChunkOffX = m_CurrentChunkX - m_CurrentRegionX * 32;
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m_CurrentChunkOffZ = m_CurrentChunkZ - m_CurrentRegionZ * 32;
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return false;
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}
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bool cBiomeMap::OnBiomes(const unsigned char * a_BiomeData)
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{
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ASSERT(m_CurrentChunkOffX >= 0);
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ASSERT(m_CurrentChunkOffX < 32);
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ASSERT(m_CurrentChunkOffZ >= 0);
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ASSERT(m_CurrentChunkOffZ < 32);
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char * BaseBiomes = m_Biomes + m_CurrentChunkOffZ * 16 * 512 + m_CurrentChunkOffX * 16;
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for (int z = 0; z < 16; z++)
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{
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char * Row = BaseBiomes + z * 512;
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memcpy(Row, a_BiomeData + z * 16, 16);
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} // for z
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return true;
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}
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void cBiomeMap::StartNewRegion(int a_RegionX, int a_RegionZ)
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{
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AString FileName;
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Printf(FileName, "Biomes.%d.%d.bmp", m_CurrentRegionX, m_CurrentRegionZ);
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cFile f;
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if (!f.Open(FileName, cFile::fmWrite))
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{
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LOG("Cannot open file \"%s\" for writing the biome map. Data for this region lost.", FileName.c_str());
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}
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else
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{
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f.Write(g_BMPHeader, sizeof(g_BMPHeader));
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for (int z = 0; z < 512; z++)
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{
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int RowData[512];
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unsigned char * BiomeRow = (unsigned char *)m_Biomes + z * 512;
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for (int x = 0; x < 512; x++)
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{
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RowData[x] = g_BiomeColors[BiomeRow[x]];
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}
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f.Write(RowData, sizeof(RowData));
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} // for z
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}
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memset(m_Biomes, 0, sizeof(m_Biomes));
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m_CurrentRegionX = a_RegionX;
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m_CurrentRegionZ = a_RegionZ;
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}
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////////////////////////////////////////////////////////////////////////////////
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// cBiomeMapFactory:
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cBiomeMapFactory::~cBiomeMapFactory()
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{
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// Force all threads to save their last regions:
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for (cCallbacks::iterator itr = m_Callbacks.begin(), end = m_Callbacks.end(); itr != end; ++itr)
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{
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((cBiomeMap *)(*itr))->Finish();
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}
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// TODO: Join all the files into one giant image file
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}
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