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