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cuberite-2a/source/cBlockArea.cpp

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// BlockArea.cpp
// Implements the cBlockArea object representing an area of block data that can be queried from cWorld and then accessed again without further queries
// The object also supports writing the blockdata back into cWorld, even into other coords
#include "Globals.h"
#include "cBlockArea.h"
#include "cWorld.h"
cBlockArea::cBlockArea(void) :
m_SizeX(0),
m_SizeY(0),
m_SizeZ(0),
m_BlockTypes(NULL),
m_BlockMetas(NULL),
m_BlockLight(NULL),
m_BlockSkyLight(NULL)
{
}
cBlockArea::~cBlockArea()
{
Clear();
}
void cBlockArea::Clear(void)
{
delete[] m_BlockTypes; m_BlockTypes = NULL;
delete[] m_BlockMetas; m_BlockMetas = NULL;
delete[] m_BlockLight; m_BlockLight = NULL;
delete[] m_BlockSkyLight; m_BlockSkyLight = NULL;
m_SizeX = 0;
m_SizeY = 0;
m_SizeZ = 0;
}
bool cBlockArea::Read(cWorld * a_World, int a_MinBlockX, int a_MaxBlockX, int a_MinBlockY, int a_MaxBlockY, int a_MinBlockZ, int a_MaxBlockZ, int a_DataTypes)
{
// Normalize the coords:
if (a_MinBlockX > a_MaxBlockX)
{
std::swap(a_MinBlockX, a_MaxBlockX);
}
if (a_MinBlockY > a_MaxBlockY)
{
std::swap(a_MinBlockY, a_MaxBlockY);
}
if (a_MinBlockZ > a_MaxBlockZ)
{
std::swap(a_MinBlockZ, a_MaxBlockZ);
}
// Check coords validity:
if (a_MinBlockY < 0)
{
LOGWARNING("cBlockArea:Read(): MinBlockY less than zero, adjusting to zero");
a_MinBlockY = 0;
}
else if (a_MinBlockY >= cChunkDef::Height)
{
LOGWARNING("cBlockArea::Read(): MinBlockY more than chunk height, adjusting to chunk height");
a_MinBlockY = cChunkDef::Height - 1;
}
if (a_MaxBlockY < 0)
{
LOGWARNING("cBlockArea:Read(): MaxBlockY less than zero, adjusting to zero");
a_MaxBlockY = 0;
}
else if (a_MinBlockY >= cChunkDef::Height)
{
LOGWARNING("cBlockArea::Read(): MaxBlockY more than chunk height, adjusting to chunk height");
a_MaxBlockY = cChunkDef::Height - 1;
}
// Allocate the needed memory:
Clear();
if (!SetSize(a_MaxBlockX - a_MinBlockX, a_MaxBlockY - a_MinBlockY, a_MaxBlockZ - a_MinBlockZ, a_DataTypes))
{
return false;
}
m_OriginX = a_MinBlockX;
m_OriginY = a_MinBlockY;
m_OriginZ = a_MinBlockZ;
cChunkReader Reader(*this);
// Convert block coords to chunks coords:
int MinChunkX, MaxChunkX;
int MinChunkZ, MaxChunkZ;
cChunkDef::AbsoluteToRelative(a_MinBlockX, a_MinBlockY, a_MinBlockZ, MinChunkX, MinChunkZ);
cChunkDef::AbsoluteToRelative(a_MaxBlockX, a_MaxBlockY, a_MaxBlockZ, MaxChunkX, MaxChunkZ);
// Query block data:
if (!a_World->ForEachChunkInRect(MinChunkX, MaxChunkX, MinChunkZ, MaxChunkZ, Reader))
{
Clear();
return false;
}
return true;
}
bool cBlockArea::Write(cWorld * a_World, int a_MinBlockX, int a_MinBlockY, int a_MinBlockZ, int a_DataTypes)
{
// TODO
ASSERT(!"Not implemented yet");
return false;
}
void cBlockArea::SetRelBlockType(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType)
{
if (m_BlockTypes == NULL)
{
LOGWARNING("cBlockArea: BlockTypes have not been read!");
return;
}
m_BlockTypes[MakeIndex(a_RelX, a_RelY, a_RelZ)] = a_BlockType;
}
void cBlockArea::SetBlockType(int a_BlockX, int a_BlockY, int a_BlockZ, BLOCKTYPE a_BlockType)
{
SetRelBlockType(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ, a_BlockType);
}
void cBlockArea::SetRelBlockMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockMeta)
{
SetRelNibble(a_RelX, a_RelY, a_RelZ, a_BlockMeta, m_BlockMetas);
}
void cBlockArea::SetBlockMeta(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_BlockMeta)
{
SetNibble(a_BlockX, a_BlockY, a_BlockZ, a_BlockMeta, m_BlockMetas);
}
void cBlockArea::SetRelBlockLight(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockLight)
{
SetRelNibble(a_RelX, a_RelY, a_RelZ, a_BlockLight, m_BlockLight);
}
void cBlockArea::SetBlockLight(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_BlockLight)
{
SetNibble(a_BlockX, a_BlockY, a_BlockZ, a_BlockLight, m_BlockLight);
}
void cBlockArea::SetRelBlockSkyLight(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_BlockSkyLight)
{
SetRelNibble(a_RelX, a_RelY, a_RelZ, a_BlockSkyLight, m_BlockSkyLight);
}
void cBlockArea::SetBlockSkyLight(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_BlockSkyLight)
{
SetNibble(a_BlockX, a_BlockY, a_BlockZ, a_BlockSkyLight, m_BlockSkyLight);
}
BLOCKTYPE cBlockArea::GetRelBlockType(int a_RelX, int a_RelY, int a_RelZ)
{
if (m_BlockTypes == NULL)
{
LOGWARNING("cBlockArea: BlockTypes have not been read!");
return E_BLOCK_AIR;
}
return m_BlockTypes[MakeIndex(a_RelX, a_RelY, a_RelZ)];
}
BLOCKTYPE cBlockArea::GetBlockType(int a_BlockX, int a_BlockY, int a_BlockZ)
{
return GetRelBlockType(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ);
}
NIBBLETYPE cBlockArea::GetRelBlockMeta(int a_RelX, int a_RelY, int a_RelZ)
{
return GetRelNibble(a_RelX, a_RelY, a_RelZ, m_BlockMetas);
}
NIBBLETYPE cBlockArea::GetBlockMeta(int a_BlockX, int a_BlockY, int a_BlockZ)
{
return GetNibble(a_BlockX, a_BlockY, a_BlockZ, m_BlockMetas);
}
NIBBLETYPE cBlockArea::GetRelBlockLight(int a_RelX, int a_RelY, int a_RelZ)
{
return GetRelNibble(a_RelX, a_RelY, a_RelZ, m_BlockLight);
}
NIBBLETYPE cBlockArea::GetBlockLight(int a_BlockX, int a_BlockY, int a_BlockZ)
{
return GetNibble(a_BlockX, a_BlockY, a_BlockZ, m_BlockLight);
}
NIBBLETYPE cBlockArea::GetRelBlockSkyLight(int a_RelX, int a_RelY, int a_RelZ)
{
return GetRelNibble(a_RelX, a_RelY, a_RelZ, m_BlockSkyLight);
}
NIBBLETYPE cBlockArea::GetBlockSkyLight(int a_BlockX, int a_BlockY, int a_BlockZ)
{
return GetNibble(a_BlockX, a_BlockY, a_BlockZ, m_BlockSkyLight);
}
int cBlockArea::GetDataTypes(void) const
{
int res = 0;
if (m_BlockTypes != NULL)
{
res |= baTypes;
}
if (m_BlockMetas != NULL)
{
res |= baMetas;
}
if (m_BlockLight != NULL)
{
res |= baLight;
}
if (m_BlockSkyLight != NULL)
{
res |= baSkyLight;
}
return res;
}
bool cBlockArea::SetSize(int a_SizeX, int a_SizeY, int a_SizeZ, int a_DataTypes)
{
ASSERT(m_BlockTypes == NULL); // Has been cleared
if (a_DataTypes & baTypes)
{
m_BlockTypes = new BLOCKTYPE[a_SizeX * a_SizeY * a_SizeZ];
if (m_BlockTypes == NULL)
{
return false;
}
}
if (a_DataTypes & baMetas)
{
m_BlockMetas = new NIBBLETYPE[a_SizeX * a_SizeY * a_SizeZ];
if (m_BlockMetas == NULL)
{
delete[] m_BlockTypes;
return false;
}
}
if (a_DataTypes & baLight)
{
m_BlockLight = new NIBBLETYPE[a_SizeX * a_SizeY * a_SizeZ];
if (m_BlockLight == NULL)
{
delete[] m_BlockMetas;
delete[] m_BlockTypes;
return false;
}
}
if (a_DataTypes & baSkyLight)
{
m_BlockSkyLight = new NIBBLETYPE[a_SizeX * a_SizeY * a_SizeZ];
if (m_BlockSkyLight == NULL)
{
delete[] m_BlockLight;
delete[] m_BlockMetas;
delete[] m_BlockTypes;
return false;
}
}
m_SizeX = a_SizeX;
m_SizeY = a_SizeY;
m_SizeZ = a_SizeZ;
return true;
}
int cBlockArea::MakeIndex(int a_RelX, int a_RelY, int a_RelZ)
{
return a_RelX + a_RelZ * m_SizeZ + a_RelY * m_SizeX * m_SizeZ;
}
void cBlockArea::SetRelNibble(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Value, NIBBLETYPE * a_Array)
{
if (a_Array == NULL)
{
LOGWARNING("cBlockArea: datatype has not been read!");
return;
}
a_Array[MakeIndex(a_RelX, a_RelY, a_RelZ)] = a_Value;
}
void cBlockArea::SetNibble(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE a_Value, NIBBLETYPE * a_Array)
{
SetRelNibble(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ, a_Value, a_Array);
}
NIBBLETYPE cBlockArea::GetRelNibble(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE * a_Array)
{
if (a_Array == NULL)
{
LOGWARNING("cBlockArea: datatype has not been read!");
return 16;
}
return a_Array[MakeIndex(a_RelX, a_RelY, a_RelZ)];
}
NIBBLETYPE cBlockArea::GetNibble(int a_BlockX, int a_BlockY, int a_BlockZ, NIBBLETYPE * a_Array)
{
return GetRelNibble(a_BlockX - m_OriginX, a_BlockY - m_OriginY, a_BlockZ - m_OriginZ, a_Array);
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cBlockArea::cChunkReader:
cBlockArea::cChunkReader::cChunkReader(cBlockArea & a_Area) :
m_Area(a_Area),
m_OriginX(a_Area.m_OriginX),
m_OriginY(a_Area.m_OriginY),
m_OriginZ(a_Area.m_OriginZ)
{
}
void cBlockArea::cChunkReader::CopyNibbles(NIBBLETYPE * a_AreaDst, const NIBBLETYPE * a_ChunkSrc)
{
int SizeY = m_Area.m_SizeY;
int MinY = m_OriginY;
// SizeX, SizeZ are the dmensions of the block data to copy from the current chunk (size of the geometric union)
// OffX, OffZ are the offsets of the current chunk data from the area origin
// BaseX, BaseZ are the offsets of the area data within the current chunk from the chunk borders
int SizeX = cChunkDef::Width;
int SizeZ = cChunkDef::Width;
int OffX, OffZ;
int BaseX, BaseZ;
OffX = m_CurrentChunkX * cChunkDef::Width - m_OriginX;
if (OffX < 0)
{
BaseX = -OffX;
SizeX += OffX; // SizeX is decreased, OffX is negative
OffX = 0;
}
else
{
BaseX = 0;
}
OffZ = m_CurrentChunkZ * cChunkDef::Width - m_OriginZ;
if (OffZ < 0)
{
BaseZ = -OffZ;
SizeZ += OffZ; // SizeZ is decreased, OffZ is negative
OffZ = 0;
}
else
{
BaseZ = 0;
}
// If the chunk extends beyond the area in the X or Z axis, cut off the Size:
if ((m_CurrentChunkX + 1) * cChunkDef::Width > m_OriginX + m_Area.m_SizeX)
{
SizeX -= (m_CurrentChunkX + 1) * cChunkDef::Width - (m_OriginX + m_Area.m_SizeX);
}
if ((m_CurrentChunkZ + 1) * cChunkDef::Width > m_OriginZ + m_Area.m_SizeZ)
{
SizeZ -= (m_CurrentChunkZ + 1) * cChunkDef::Width - (m_OriginZ + m_Area.m_SizeZ);
}
for (int y = 0; y < SizeY; y++)
{
int ChunkY = MinY + y;
int AreaY = y;
for (int z = 0; z < SizeZ; z++)
{
int ChunkZ = BaseZ + z;
int AreaZ = OffZ + z;
for (int x = 0; x < SizeX; x++)
{
int ChunkX = BaseX + x;
int AreaX = OffX + x;
a_AreaDst[m_Area.MakeIndex(AreaX, AreaY, AreaZ)] = cChunkDef::GetNibble(a_ChunkSrc, ChunkX, ChunkY, ChunkZ);
} // for x
} // for z
} // for y
}
bool cBlockArea::cChunkReader::Coords(int a_ChunkX, int a_ChunkZ)
{
m_CurrentChunkX = a_ChunkX;
m_CurrentChunkZ = a_ChunkZ;
return true;
}
void cBlockArea::cChunkReader::BlockTypes(const BLOCKTYPE * a_BlockTypes)
{
if (m_Area.m_BlockTypes == NULL)
{
// Don't want BlockTypes
return;
}
int SizeY = m_Area.m_SizeY;
int MinY = m_OriginY;
// SizeX, SizeZ are the dmensions of the block data to copy from the current chunk (size of the geometric union)
// OffX, OffZ are the offsets of the current chunk data from the area origin
// BaseX, BaseZ are the offsets of the area data within the current chunk from the chunk borders
int SizeX = cChunkDef::Width;
int SizeZ = cChunkDef::Width;
int OffX, OffZ;
int BaseX, BaseZ;
OffX = m_CurrentChunkX * cChunkDef::Width - m_OriginX;
if (OffX < 0)
{
BaseX = -OffX;
SizeX += OffX; // SizeX is decreased, OffX is negative
OffX = 0;
}
else
{
BaseX = 0;
}
OffZ = m_CurrentChunkZ * cChunkDef::Width - m_OriginZ;
if (OffZ < 0)
{
BaseZ = -OffZ;
SizeZ += OffZ; // SizeZ is decreased, OffZ is negative
OffZ = 0;
}
else
{
BaseZ = 0;
}
// If the chunk extends beyond the area in the X or Z axis, cut off the Size:
if ((m_CurrentChunkX + 1) * cChunkDef::Width > m_OriginX + m_Area.m_SizeX)
{
SizeX -= (m_CurrentChunkX + 1) * cChunkDef::Width - (m_OriginX + m_Area.m_SizeX);
}
if ((m_CurrentChunkZ + 1) * cChunkDef::Width > m_OriginZ + m_Area.m_SizeZ)
{
SizeZ -= (m_CurrentChunkZ + 1) * cChunkDef::Width - (m_OriginZ + m_Area.m_SizeZ);
}
for (int y = 0; y < SizeY; y++)
{
int ChunkY = MinY + y;
int AreaY = y;
for (int z = 0; z < SizeZ; z++)
{
int ChunkZ = BaseZ + z;
int AreaZ = OffZ + z;
for (int x = 0; x < SizeX; x++)
{
int ChunkX = BaseX + x;
int AreaX = OffX + x;
m_Area.m_BlockTypes[m_Area.MakeIndex(AreaX, AreaY, AreaZ)] = cChunkDef::GetBlock(a_BlockTypes, ChunkX, ChunkY, ChunkZ);
} // for x
} // for z
} // for y
}
void cBlockArea::cChunkReader::BlockMeta(const NIBBLETYPE * a_BlockMetas)
{
if (m_Area.m_BlockMetas == NULL)
{
// Don't want metas
return;
}
CopyNibbles(m_Area.m_BlockMetas, a_BlockMetas);
}
void cBlockArea::cChunkReader::BlockLight(const NIBBLETYPE * a_BlockLight)
{
if (m_Area.m_BlockLight == NULL)
{
// Don't want light
return;
}
CopyNibbles(m_Area.m_BlockLight, a_BlockLight);
}
void cBlockArea::cChunkReader::BlockSkyLight(const NIBBLETYPE * a_BlockSkyLight)
{
if (m_Area.m_BlockSkyLight == NULL)
{
// Don't want skylight
return;
}
CopyNibbles(m_Area.m_BlockSkyLight, a_BlockSkyLight);
}