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-rw-r--r--src/ChunkDef.h211
1 files changed, 58 insertions, 153 deletions
diff --git a/src/ChunkDef.h b/src/ChunkDef.h
index 9c7753820..f89e16ed1 100644
--- a/src/ChunkDef.h
+++ b/src/ChunkDef.h
@@ -77,13 +77,19 @@ public:
idx = x + Width * z // Need to verify this with the protocol spec, currently unknown!
*/
typedef EMCSBiome BiomeMap[Width * Width];
-
+
/// The type used for block type operations and storage, AXIS_ORDER ordering
typedef BLOCKTYPE BlockTypes[NumBlocks];
-
+
/// The type used for block data in nibble format, AXIS_ORDER ordering
typedef NIBBLETYPE BlockNibbles[NumBlocks / 2];
+ /** The storage wrapper used for compressed blockdata residing in RAMz */
+ typedef std::vector<BLOCKTYPE> COMPRESSED_BLOCKTYPE;
+
+ /** The storage wrapper used for compressed nibbledata residing in RAMz */
+ typedef std::vector<NIBBLETYPE> COMPRESSED_NIBBLETYPE;
+
/// Converts absolute block coords into relative (chunk + block) coords:
inline static void AbsoluteToRelative(/* in-out */ int & a_X, int & a_Y, int & a_Z, /* out */ int & a_ChunkX, int & a_ChunkZ )
@@ -219,46 +225,67 @@ public:
ASSERT((a_Z >= 0) && (a_Z <= Width));
a_BiomeMap[a_X + Width * a_Z] = a_Biome;
}
-
-
- static NIBBLETYPE GetNibble(const NIBBLETYPE * a_Buffer, int a_BlockIdx)
+
+
+ static NIBBLETYPE GetNibble(const COMPRESSED_NIBBLETYPE & a_Buffer, int a_BlockIdx, bool a_IsSkyLightNibble = false)
{
if ((a_BlockIdx > -1) && (a_BlockIdx < NumBlocks))
{
- return (a_Buffer[a_BlockIdx / 2] >> ((a_BlockIdx & 1) * 4)) & 0x0f;
+ if ((size_t)(a_BlockIdx / 2) >= a_Buffer.size())
+ {
+ return (a_IsSkyLightNibble ? 0xff : 0);
+ }
+ return (a_Buffer[(size_t)(a_BlockIdx / 2)] >> ((a_BlockIdx & 1) * 4)) & 0x0f;
}
ASSERT(!"cChunkDef::GetNibble(): index out of chunk range!");
return 0;
}
-
-
+
+
+ static NIBBLETYPE GetNibble(const COMPRESSED_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))
+ {
+ size_t Index = (size_t)MakeIndexNoCheck(x, y, z);
+ if ((Index / 2) >= a_Buffer.size())
+ {
+ return (a_IsSkyLightNibble ? 0xff : 0);
+ }
+ return ExpandNibble(a_Buffer, Index);
+ }
+ ASSERT(!"cChunkDef::GetNibble(): coords out of chunk range!");
+ return 0;
+ }
+
+
static NIBBLETYPE GetNibble(const NIBBLETYPE * a_Buffer, int x, int y, int z)
{
if ((x < Width) && (x > -1) && (y < Height) && (y > -1) && (z < Width) && (z > -1))
{
int Index = MakeIndexNoCheck(x, y, z);
- return (a_Buffer[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
+ return (a_Buffer[(size_t)(Index / 2)] >> ((Index & 1) * 4)) & 0x0f;
}
ASSERT(!"cChunkDef::GetNibble(): coords out of chunk range!");
return 0;
}
- static void SetNibble(NIBBLETYPE * a_Buffer, int a_BlockIdx, NIBBLETYPE a_Nibble)
+ static void SetNibble(COMPRESSED_NIBBLETYPE & a_Buffer, int a_BlockIdx, NIBBLETYPE a_Nibble)
{
if ((a_BlockIdx < 0) || (a_BlockIdx >= NumBlocks))
{
ASSERT(!"cChunkDef::SetNibble(): index out of range!");
return;
}
- a_Buffer[a_BlockIdx / 2] = static_cast<NIBBLETYPE>(
- (a_Buffer[a_BlockIdx / 2] & (0xf0 >> ((a_BlockIdx & 1) * 4))) | // The untouched nibble
- ((a_Nibble & 0x0f) << ((a_BlockIdx & 1) * 4)) // The nibble being set
- );
+ if ((size_t)(a_BlockIdx / 2) >= a_Buffer.size())
+ {
+ a_Buffer.resize((size_t)((a_BlockIdx / 2) + 1));
+ }
+ a_Buffer[(size_t)(a_BlockIdx / 2)] = PackNibble(a_Buffer, (size_t)a_BlockIdx, a_Nibble);
}
-
-
- static void SetNibble(NIBBLETYPE * a_Buffer, int x, int y, int z, NIBBLETYPE a_Nibble)
+
+
+ static void SetNibble(COMPRESSED_NIBBLETYPE & a_Buffer, int x, int y, int z, NIBBLETYPE a_Nibble)
{
if (
(x >= Width) || (x < 0) ||
@@ -270,155 +297,33 @@ public:
return;
}
- int Index = MakeIndexNoCheck(x, y, z);
- a_Buffer[Index / 2] = static_cast<NIBBLETYPE>(
- (a_Buffer[Index / 2] & (0xf0 >> ((Index & 1) * 4))) | // The untouched nibble
- ((a_Nibble & 0x0f) << ((Index & 1) * 4)) // The nibble being set
- );
- }
-
-
- inline static NIBBLETYPE GetNibble(const NIBBLETYPE * a_Buffer, const Vector3i & a_BlockPos )
- {
- return GetNibble(a_Buffer, a_BlockPos.x, a_BlockPos.y, a_BlockPos.z );
- }
-
-
- inline static void SetNibble(NIBBLETYPE * a_Buffer, const Vector3i & a_BlockPos, NIBBLETYPE a_Value )
- {
- SetNibble( a_Buffer, a_BlockPos.x, a_BlockPos.y, a_BlockPos.z, a_Value );
- }
-
-} ;
-
-
-
-
-
-/** Interface class used for getting data out of a chunk using the GetAllData() function.
-Implementation must use the pointers immediately and NOT store any of them for later use
-The virtual methods are called in the same order as they're declared here.
-*/
-class cChunkDataCallback abstract
-{
-public:
-
- virtual ~cChunkDataCallback() {}
-
- /** Called before any other callbacks to inform of the current coords
- (only in processes where multiple chunks can be processed, such as cWorld::ForEachChunkInRect()).
- If false is returned, the chunk is skipped.
- */
- virtual bool Coords(int a_ChunkX, int a_ChunkZ) { UNUSED(a_ChunkX); UNUSED(a_ChunkZ); return true; };
-
- /// Called once to provide heightmap data
- virtual void HeightMap(const cChunkDef::HeightMap * a_HeightMap) {UNUSED(a_HeightMap); };
-
- /// Called once to provide biome data
- virtual void BiomeData (const cChunkDef::BiomeMap * a_BiomeMap) {UNUSED(a_BiomeMap); };
-
- /// Called once to export block types
- virtual void BlockTypes (const BLOCKTYPE * a_Type) {UNUSED(a_Type); };
-
- /// Called once to export block meta
- virtual void BlockMeta (const NIBBLETYPE * a_Meta) {UNUSED(a_Meta); };
-
- /// Called once to let know if the chunk lighting is valid. Return value is used to control if BlockLight() and BlockSkyLight() are called next (if true)
- virtual bool LightIsValid(bool a_IsLightValid) {UNUSED(a_IsLightValid); return true; };
-
- /// Called once to export block light
- virtual void BlockLight (const NIBBLETYPE * a_BlockLight) {UNUSED(a_BlockLight); };
-
- /// Called once to export sky light
- virtual void BlockSkyLight(const NIBBLETYPE * a_SkyLight) {UNUSED(a_SkyLight); };
-
- /// Called for each entity in the chunk
- virtual void Entity(cEntity * a_Entity) {UNUSED(a_Entity); };
-
- /// Called for each blockentity in the chunk
- virtual void BlockEntity(cBlockEntity * a_Entity) {UNUSED(a_Entity); };
-} ;
-
-
-
-
-
-/** A simple implementation of the cChunkDataCallback interface that collects all block data into a single buffer
-*/
-class cChunkDataCollector :
- public cChunkDataCallback
-{
-public:
-
- // Must be unsigned char instead of BLOCKTYPE or NIBBLETYPE, because it houses both.
- unsigned char m_BlockData[cChunkDef::BlockDataSize];
-
-protected:
-
- virtual void BlockTypes(const BLOCKTYPE * a_BlockTypes) override
- {
- memcpy(m_BlockData, a_BlockTypes, sizeof(cChunkDef::BlockTypes));
- }
-
-
- virtual void BlockMeta(const NIBBLETYPE * a_BlockMeta) override
- {
- memcpy(m_BlockData + cChunkDef::NumBlocks, a_BlockMeta, cChunkDef::NumBlocks / 2);
- }
-
-
- virtual void BlockLight(const NIBBLETYPE * a_BlockLight) override
- {
- memcpy(m_BlockData + 3 * cChunkDef::NumBlocks / 2, a_BlockLight, cChunkDef::NumBlocks / 2);
- }
-
-
- virtual void BlockSkyLight(const NIBBLETYPE * a_BlockSkyLight) override
- {
- memcpy(m_BlockData + 2 * cChunkDef::NumBlocks, a_BlockSkyLight, cChunkDef::NumBlocks / 2);
+ size_t Index = (size_t)MakeIndexNoCheck(x, y, z);
+ if ((Index / 2) >= a_Buffer.size())
+ {
+ a_Buffer.resize(((Index / 2) + 1));
+ }
+ a_Buffer[(Index / 2)] = PackNibble(a_Buffer, Index, a_Nibble);
}
-} ;
-
+private:
-/** A simple implementation of the cChunkDataCallback interface that collects all block data into a separate buffers
-*/
-class cChunkDataSeparateCollector :
- public cChunkDataCallback
-{
-public:
-
- cChunkDef::BlockTypes m_BlockTypes;
- cChunkDef::BlockNibbles m_BlockMetas;
- cChunkDef::BlockNibbles m_BlockLight;
- cChunkDef::BlockNibbles m_BlockSkyLight;
-
-protected:
-
- virtual void BlockTypes(const BLOCKTYPE * a_BlockTypes) override
+ inline static NIBBLETYPE PackNibble(const COMPRESSED_NIBBLETYPE & a_Buffer, size_t a_Index, NIBBLETYPE a_Nibble)
{
- memcpy(m_BlockTypes, a_BlockTypes, sizeof(m_BlockTypes));
- }
-
-
- virtual void BlockMeta(const NIBBLETYPE * a_BlockMeta) override
- {
- memcpy(m_BlockMetas, a_BlockMeta, sizeof(m_BlockMetas));
+ return static_cast<NIBBLETYPE>(
+ (a_Buffer[a_Index / 2] & (0xf0 >> ((a_Index & 1) * 4))) | // The untouched nibble
+ ((a_Nibble & 0x0f) << ((a_Index & 1) * 4)) // The nibble being set
+ );
}
- virtual void BlockLight(const NIBBLETYPE * a_BlockLight) override
+ inline static NIBBLETYPE ExpandNibble(const COMPRESSED_NIBBLETYPE & a_Buffer, size_t a_Index)
{
- memcpy(m_BlockLight, a_BlockLight, sizeof(m_BlockLight));
+ return (a_Buffer[a_Index / 2] >> ((a_Index & 1) * 4)) & 0x0f;
}
- virtual void BlockSkyLight(const NIBBLETYPE * a_BlockSkyLight) override
- {
- memcpy(m_BlockSkyLight, a_BlockSkyLight, sizeof(m_BlockSkyLight));
- }
} ;
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