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Added cBlockArea:Merge() API function to merge two block areas using different strategies.

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git-svn-id: http://mc-server.googlecode.com/svn/trunk@1207 0a769ca7-a7f5-676a-18bf-c427514a06d6
This commit is contained in:
madmaxoft@gmail.com
2013-02-10 15:15:41 +00:00
parent c497a34536
commit 345da37e96
5 changed files with 273 additions and 9 deletions
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181
source/BlockArea.cpp
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@@ -14,6 +14,87 @@
// This wild construct allows us to pass a function argument and still have it inlined by the compiler :)
/// Merges two blocktypes and blockmetas of the specified sizes and offsets using the specified combinator function
template<typename Combinator> void InternalMergeBlocks(
BLOCKTYPE * a_DstTypes, const BLOCKTYPE * a_SrcTypes,
NIBBLETYPE * a_DstMetas, const NIBBLETYPE * a_SrcMetas,
int a_SizeX, int a_SizeY, int a_SizeZ,
int a_SrcOffX, int a_SrcOffY, int a_SrcOffZ,
int a_DstOffX, int a_DstOffY, int a_DstOffZ,
int a_SrcSizeX, int a_SrcSizeY, int a_SrcSizeZ,
int a_DstSizeX, int a_DstSizeY, int a_DstSizeZ,
Combinator a_Combinator
)
{
for (int y = 0; y < a_SizeY; y++)
{
int SrcBaseY = (y + a_SrcOffY) * a_SrcSizeX * a_SrcSizeZ;
int DstBaseY = (y + a_DstOffY) * a_DstSizeX * a_DstSizeZ;
for (int z = 0; z < a_SizeZ; z++)
{
int SrcBaseZ = SrcBaseY + (z + a_SrcOffZ) * a_SrcSizeX;
int DstBaseZ = DstBaseY + (z + a_DstOffZ) * a_DstSizeX;
int SrcIdx = SrcBaseZ + a_SrcOffX;
int DstIdx = DstBaseZ + a_DstOffX;
for (int x = 0; x < a_SizeX; x++)
{
a_Combinator(a_DstTypes[DstIdx], a_SrcTypes[SrcIdx], a_DstMetas[DstIdx], a_SrcMetas[SrcIdx]);
++DstIdx;
++SrcIdx;
} // for x
} // for z
} // for y
}
/// Combinator used for cBlockArea::msOverwrite merging
static void MergeCombinatorOverwrite(BLOCKTYPE & a_DstType, BLOCKTYPE a_SrcType, NIBBLETYPE & a_DstMeta, NIBBLETYPE a_SrcMeta)
{
a_DstType = a_SrcType;
a_DstMeta = a_SrcMeta;
}
/// Combinator used for cBlockArea::msFillAir merging
static void MergeCombinatorFillAir(BLOCKTYPE & a_DstType, BLOCKTYPE a_SrcType, NIBBLETYPE & a_DstMeta, NIBBLETYPE a_SrcMeta)
{
if (a_DstType == E_BLOCK_AIR)
{
a_DstType = a_SrcType;
a_DstMeta = a_SrcMeta;
}
// "else" is the default, already in place
}
/// Combinator used for cBlockArea::msImprint merging
static void MergeCombinatorImprint(BLOCKTYPE & a_DstType, BLOCKTYPE a_SrcType, NIBBLETYPE & a_DstMeta, NIBBLETYPE a_SrcMeta)
{
if (a_SrcType != E_BLOCK_AIR)
{
a_DstType = a_SrcType;
a_DstMeta = a_SrcMeta;
}
// "else" is the default, already in place
}
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
// cBlockArea:
cBlockArea::cBlockArea(void) :
m_SizeX(0),
m_SizeY(0),
@@ -300,7 +381,7 @@ bool cBlockArea::SaveToSchematicFile(const AString & a_FileName)
Writer.EndList();
Writer.Finish();
// TODO: Save to file
// Save to file
cGZipFile File;
if (!File.Open(a_FileName, cGZipFile::fmWrite))
{
@@ -392,6 +473,104 @@ void cBlockArea::Expand(int a_SubMinX, int a_AddMaxX, int a_SubMinY, int a_AddMa
void cBlockArea::Merge(const cBlockArea & a_Src, int a_RelX, int a_RelY, int a_RelZ, eMergeStrategy a_Strategy)
{
// Block types are compulsory, block metas are voluntary
if (!HasBlockTypes() || !a_Src.HasBlockTypes())
{
LOGWARNING("%s: cannot merge because one of the areas doesn't have blocktypes.", __FUNCTION__);
return;
}
// Dst is *this, Src is a_Src
int SrcOffX = std::max(0, -a_RelX); // Offset in Src where to start reading
int DstOffX = std::max(0, a_RelX); // Offset in Dst where to start writing
int SizeX = std::min(a_Src.GetSizeX() - SrcOffX, GetSizeX() - DstOffX); // How many blocks to copy
int SrcOffY = std::max(0, -a_RelY); // Offset in Src where to start reading
int DstOffY = std::max(0, a_RelY); // Offset in Dst where to start writing
int SizeY = std::min(a_Src.GetSizeY() - SrcOffY, GetSizeY() - DstOffY); // How many blocks to copy
int SrcOffZ = std::max(0, -a_RelZ); // Offset in Src where to start reading
int DstOffZ = std::max(0, a_RelZ); // Offset in Dst where to start writing
int SizeZ = std::min(a_Src.GetSizeZ() - SrcOffZ, GetSizeZ() - DstOffZ); // How many blocks to copy
const NIBBLETYPE * SrcMetas = a_Src.GetBlockMetas();
NIBBLETYPE * DstMetas = m_BlockMetas;
bool IsDummyMetas = ((SrcMetas == NULL) || (DstMetas == NULL));
if (IsDummyMetas)
{
SrcMetas = new NIBBLETYPE[a_Src.GetBlockCount()];
DstMetas = new NIBBLETYPE[GetBlockCount()];
}
switch (a_Strategy)
{
case msOverwrite:
{
InternalMergeBlocks(
m_BlockTypes, a_Src.GetBlockTypes(),
DstMetas, SrcMetas,
SizeX, SizeY, SizeZ,
SrcOffX, SrcOffY, SrcOffZ,
DstOffX, DstOffY, DstOffZ,
a_Src.GetSizeX(), a_Src.GetSizeY(), a_Src.GetSizeZ(),
m_SizeX, m_SizeY, m_SizeZ,
MergeCombinatorOverwrite
);
break;
} // case msOverwrite
case msFillAir:
{
InternalMergeBlocks(
m_BlockTypes, a_Src.GetBlockTypes(),
DstMetas, SrcMetas,
SizeX, SizeY, SizeZ,
SrcOffX, SrcOffY, SrcOffZ,
DstOffX, DstOffY, DstOffZ,
a_Src.GetSizeX(), a_Src.GetSizeY(), a_Src.GetSizeZ(),
m_SizeX, m_SizeY, m_SizeZ,
MergeCombinatorFillAir
);
break;
} // case msFillAir
case msImprint:
{
InternalMergeBlocks(
m_BlockTypes, a_Src.GetBlockTypes(),
DstMetas, SrcMetas,
SizeX, SizeY, SizeZ,
SrcOffX, SrcOffY, SrcOffZ,
DstOffX, DstOffY, DstOffZ,
a_Src.GetSizeX(), a_Src.GetSizeY(), a_Src.GetSizeZ(),
m_SizeX, m_SizeY, m_SizeZ,
MergeCombinatorImprint
);
break;
} // case msImprint
default:
{
LOGWARNING("Unknown block area merge strategy: %d", a_Strategy);
ASSERT(!"Unknown block area merge strategy");
break;
}
} // switch (a_Strategy)
if (IsDummyMetas)
{
delete[] SrcMetas;
delete[] DstMetas;
}
}
void cBlockArea::SetRelBlockType(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_BlockType)
{
if (m_BlockTypes == NULL)