flewkey/cuberite-2a
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Blocklight and skylight now compressed

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This commit is contained in:
Tiger Wang 2014-04-06 23:30:21 +01:00
parent 3201d1bf16
commit a42d1f8517
3 changed files with 91 additions and 33 deletions
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84
src/Chunk.cpp
View File

@ -250,8 +250,14 @@ void cChunk::GetAllData(cChunkDataCallback & a_Callback)
a_Callback.BlockMeta (Metas.data());
a_Callback.LightIsValid (m_IsLightValid);
a_Callback.BlockLight (m_BlockLight);
a_Callback.BlockSkyLight(m_BlockSkyLight);
std::vector<NIBBLETYPE> BlockLights = m_BlockLight;
BlockLights.resize(NumBlocks / 2);
a_Callback.BlockLight (BlockLights.data());
std::vector<NIBBLETYPE> BlockSkyLights = m_BlockSkyLight;
BlockSkyLights.resize(NumBlocks / 2, 0xff);
a_Callback.BlockSkyLight(BlockSkyLights.data());
for (cEntityList::iterator itr = m_Entities.begin(); itr != m_Entities.end(); ++itr)
{
@ -285,9 +291,10 @@ void cChunk::SetAllData(
memcpy(m_HeightMap, a_HeightMap, sizeof(m_HeightMap));
}
{
int IdxWhereNonEmptyStarts = 0;
{ // Blocktype compression
bool FoundNonAir = false;
int IdxWhereNonEmptyStarts = 0;
m_BlockTypes.clear();
for (int Idx = NumBlocks - 1; Idx >= 0; Idx--)
@ -303,29 +310,47 @@ void cChunk::SetAllData(
}
{ // Blockmeta compression
m_BlockMeta.clear();
m_BlockMeta.insert(m_BlockMeta.end(), &a_BlockMeta[0], &a_BlockMeta[(IdxWhereNonEmptyStarts + 1) / 2]);
}
}
if (a_BlockLight != NULL)
{
// Compress blocklight
bool FoundNonEmpty = false;
int IdxWhereNonEmptyStarts = 0;
m_BlockMeta.clear();
m_BlockLight.clear();
for (int Idx = (NumBlocks / 2) - 1; Idx >= 0; Idx--)
{
if (a_BlockMeta[Idx] != 0)
if (a_BlockLight[Idx] != 0)
{
FoundNonEmpty = true;
IdxWhereNonEmptyStarts = Idx;
break;
}
}
m_BlockMeta.insert(m_BlockMeta.end(), &a_BlockMeta[0], &a_BlockMeta[IdxWhereNonEmptyStarts + 1]);
m_BlockLight.insert(m_BlockLight.end(), &a_BlockLight[0], &a_BlockLight[IdxWhereNonEmptyStarts + 1]);
}
if (a_BlockLight != NULL)
{
memcpy(m_BlockLight, a_BlockLight, sizeof(m_BlockLight));
}
if (a_BlockSkyLight != NULL)
{
memcpy(m_BlockSkyLight, a_BlockSkyLight, sizeof(m_BlockSkyLight));
// Compress skylight
bool FoundNonEmpty = false;
int IdxWhereNonEmptyStarts = 0;
m_BlockSkyLight.clear();
for (int Idx = (NumBlocks / 2) - 1; Idx >= 0; Idx--)
{
if (a_BlockSkyLight[Idx] != 0xff)
{
FoundNonEmpty = true;
IdxWhereNonEmptyStarts = Idx;
break;
}
}
m_BlockSkyLight.insert(m_BlockSkyLight.end(), &a_BlockSkyLight[0], &a_BlockSkyLight[IdxWhereNonEmptyStarts + 1]);
}
m_IsLightValid = (a_BlockLight != NULL) && (a_BlockSkyLight != NULL);
@ -371,8 +396,41 @@ void cChunk::SetLight(
{
// TODO: We might get cases of wrong lighting when a chunk changes in the middle of a lighting calculation.
// Postponing until we see how bad it is :)
memcpy(m_BlockLight, a_BlockLight, sizeof(m_BlockLight));
memcpy(m_BlockSkyLight, a_SkyLight, sizeof(m_BlockSkyLight));
{ // Compress blocklight
bool FoundNonEmpty = false;
int IdxWhereNonEmptyStarts = 0;
m_BlockLight.clear();
for (int Idx = (NumBlocks / 2) - 1; Idx >= 0; Idx--)
{
if (a_BlockLight[Idx] != 0)
{
FoundNonEmpty = true;
IdxWhereNonEmptyStarts = Idx;
break;
}
}
m_BlockLight.insert(m_BlockLight.end(), &a_BlockLight[0], &a_BlockLight[IdxWhereNonEmptyStarts + 1]);
}
{ // Compress skylight
bool FoundNonEmpty = false;
int IdxWhereNonEmptyStarts = 0;
m_BlockSkyLight.clear();
for (int Idx = (NumBlocks / 2) - 1; Idx >= 0; Idx--)
{
if (a_SkyLight[Idx] != 0xff)
{
FoundNonEmpty = true;
IdxWhereNonEmptyStarts = Idx;
break;
}
}
m_BlockSkyLight.insert(m_BlockSkyLight.end(), &a_SkyLight[0], &a_SkyLight[IdxWhereNonEmptyStarts + 1]);
}
m_IsLightValid = true;
}

8
src/Chunk.h
View File

@ -326,9 +326,9 @@ public:
inline void SetMeta(int a_BlockIdx, NIBBLETYPE a_Meta) { cChunkDef::SetNibble(m_BlockMeta, a_BlockIdx, a_Meta); }
inline NIBBLETYPE GetBlockLight(int a_RelX, int a_RelY, int a_RelZ) const {return cChunkDef::GetNibble(m_BlockLight, a_RelX, a_RelY, a_RelZ); }
inline NIBBLETYPE GetSkyLight (int a_RelX, int a_RelY, int a_RelZ) const {return cChunkDef::GetNibble(m_BlockSkyLight, a_RelX, a_RelY, a_RelZ); }
inline NIBBLETYPE GetSkyLight (int a_RelX, int a_RelY, int a_RelZ) const {return cChunkDef::GetNibble(m_BlockSkyLight, a_RelX, a_RelY, a_RelZ, true); }
inline NIBBLETYPE GetBlockLight(int a_Idx) const {return cChunkDef::GetNibble(m_BlockLight, a_Idx); }
inline NIBBLETYPE GetSkyLight (int a_Idx) const {return cChunkDef::GetNibble(m_BlockSkyLight, a_Idx); }
inline NIBBLETYPE GetSkyLight (int a_Idx) const {return cChunkDef::GetNibble(m_BlockSkyLight, a_Idx, true); }
/** Same as GetBlock(), but relative coords needn't be in this chunk (uses m_Neighbor-s or m_ChunkMap in such a case); returns true on success */
bool UnboundedRelGetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE & a_BlockType, NIBBLETYPE & a_BlockMeta) const;
@ -423,8 +423,8 @@ private:
// TODO: Make these pointers and don't allocate what isn't needed
std::vector<BLOCKTYPE> m_BlockTypes;
std::vector<NIBBLETYPE> m_BlockMeta;
NIBBLETYPE m_BlockLight [cChunkDef::NumBlocks / 2];
NIBBLETYPE m_BlockSkyLight[cChunkDef::NumBlocks / 2];
std::vector<NIBBLETYPE> m_BlockLight;
std::vector<NIBBLETYPE> m_BlockSkyLight;
cChunkDef::HeightMap m_HeightMap;
cChunkDef::BiomeMap m_BiomeMap;

8
src/ChunkDef.h
View File

@ -232,13 +232,13 @@ public:
}
static NIBBLETYPE GetNibble(const std::vector<NIBBLETYPE> & a_Buffer, int a_BlockIdx)
static NIBBLETYPE GetNibble(const std::vector<NIBBLETYPE> & a_Buffer, int a_BlockIdx, bool a_IsSkyLightNibble = false)
{
if ((a_BlockIdx > -1) && (a_BlockIdx < NumBlocks))
{
if (a_Buffer.empty() || (a_BlockIdx / 2 > a_Buffer.size() - 1))
{
return 0;
return (a_IsSkyLightNibble ? 0xff : 0);
}
return (a_Buffer[a_BlockIdx / 2] >> ((a_BlockIdx & 1) * 4)) & 0x0f;
}
@ -259,14 +259,14 @@ public:
}
static NIBBLETYPE GetNibble(const std::vector<NIBBLETYPE> & a_Buffer, int x, int y, int z)
static NIBBLETYPE GetNibble(const std::vector<NIBBLETYPE> & a_Buffer, int x, int y, int z, bool a_IsSkyLightNibble = false)
{
if ((x < Width) && (x > -1) && (y < Height) && (y > -1) && (z < Width) && (z > -1))
{
int Index = MakeIndexNoCheck(x, y, z);
if (a_Buffer.empty() || (Index / 2 > a_Buffer.size() - 1))
{
return 0;
return (a_IsSkyLightNibble ? 0xff : 0);
}
return (a_Buffer[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
}