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-rw-r--r--src/ChunkData.cpp563
1 files changed, 262 insertions, 301 deletions
diff --git a/src/ChunkData.cpp b/src/ChunkData.cpp
index 99421bc33..24a2c3e14 100644
--- a/src/ChunkData.cpp
+++ b/src/ChunkData.cpp
@@ -1,92 +1,141 @@
-#ifdef TEST_GLOBALS
-#include "TestGlobals.h"
-#else
+// ChunkData.cpp
+
+// Implements the cChunkData class that represents the block's type, meta, blocklight and skylight storage for a chunk
+
#include "Globals.h"
-#endif
#include "ChunkData.h"
+
+
+
+
+/** Returns true if all a_Array's elements between [0] and [a_NumElements - 1] are equal to a_Value. */
+template <typename T> inline bool IsAllValue(const T * a_Array, size_t a_NumElements, T a_Value)
+{
+ for (size_t i = 0; i < a_NumElements; i++)
+ {
+ if (a_Array[i] != a_Value)
+ {
+ return false;
+ }
+ }
+ return true;
+}
+
+
+
+
+
cChunkData::cChunkData(cAllocationPool<cChunkData::sChunkSection, 1600>& a_Pool) :
#if __cplusplus < 201103L
// auto_ptr style interface for memory management
- IsOwner(true),
+ m_IsOwner(true)
#endif
m_Pool(a_Pool)
{
- memset(m_Sections, 0, sizeof(m_Sections));
+ for (size_t i = 0; i < NumSections; i++)
+ {
+ m_Sections[i] = NULL;
+ }
}
+
+
+
cChunkData::~cChunkData()
{
#if __cplusplus < 201103L
// auto_ptr style interface for memory management
- if (!IsOwner)
+ if (!m_IsOwner)
{
return;
}
#endif
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ for (size_t i = 0; i < NumSections; i++)
{
- if (m_Sections[i] == NULL) Free(m_Sections[i]);;
+ Free(m_Sections[i]);
+ m_Sections[i] = NULL;
}
}
+
+
+
+
#if __cplusplus < 201103L
// auto_ptr style interface for memory management
- cChunkData::cChunkData(const cChunkData& other) :
- IsOwner(true),
- m_Pool(other.m_Pool)
+ cChunkData::cChunkData(const cChunkData & a_Other) :
+ m_IsOwner(true),
+ m_Pool(other.m_Pool)
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ // Move contents and ownership from a_Other to this, pointer-wise:
+ for (size_t i = 0; i < NumSections; i++)
{
- m_Sections[i] = other.m_Sections[i];
+ m_Sections[i] = a_Other.m_Sections[i];
}
- other.IsOwner = false;
+ a_Other.m_IsOwner = false;
}
- cChunkData& cChunkData::operator=(const cChunkData& other)
+
+
+
+
+ cChunkData & cChunkData::operator =(const cChunkData & a_Other)
{
- if (&other != this)
+ // If assigning to self, no-op
+ if (&a_Other == this)
{
- if (IsOwner)
- {
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
- {
- if (m_Sections[i]) Free(m_Sections[i]);;
- }
- }
- IsOwner = true;
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ return *this;
+ }
+
+ // Free any currently held contents:
+ if (m_IsOwner)
+ {
+ for (size_t i = 0; i < NumSections; i++)
{
- m_Sections[i] = other.m_Sections[i];
+ Free(m_Sections[i]);
+ m_Sections[i] = NULL;
}
- other.IsOwner = false;
- ASSERT(&m_Pool == &other.m_Pool);
}
+
+ // Move contents and ownership from a_Other to this, pointer-wise:
+ m_IsOwner = true;
+ for (size_t i = 0; i < NumSections; i++)
+ {
+ m_Sections[i] = a_Other.m_Sections[i];
+ }
+ a_Other.m_IsOwner = false;
+ ASSERT(&m_Pool == &other.m_Pool);
return *this;
-
}
+
#else
+
// unique_ptr style interface for memory management
- cChunkData::cChunkData(cChunkData&& other) :
+ cChunkData::cChunkData(cChunkData && other) :
m_Pool(other.m_Pool)
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ for (size_t i = 0; i < NumSections; i++)
{
m_Sections[i] = other.m_Sections[i];
other.m_Sections[i] = NULL;
}
}
+
+
+
+
- cChunkData& cChunkData::operator=(cChunkData&& other)
+ cChunkData & cChunkData::operator =(cChunkData && other)
{
if (&other != this)
{
ASSERT(&m_Pool == &other.m_Pool);
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ for (size_t i = 0; i < NumSections; i++)
{
- Free(m_Sections[i]);;
+ Free(m_Sections[i]);
m_Sections[i] = other.m_Sections[i];
other.m_Sections[i] = NULL;
}
@@ -95,15 +144,19 @@ cChunkData::~cChunkData()
}
#endif
+
+
+
+
BLOCKTYPE cChunkData::GetBlock(int a_X, int a_Y, int a_Z) const
{
ASSERT((a_X >= 0) && (a_X < cChunkDef::Width));
ASSERT((a_Y >= 0) && (a_Y < cChunkDef::Height));
ASSERT((a_Z >= 0) && (a_Z < cChunkDef::Width));
- int Section = a_Y / CHUNK_SECTION_HEIGHT;
+ int Section = a_Y / SectionHeight;
if (m_Sections[Section] != NULL)
{
- int Index = cChunkDef::MakeIndexNoCheck(a_X, a_Y - (Section * CHUNK_SECTION_HEIGHT), a_Z);
+ int Index = cChunkDef::MakeIndexNoCheck(a_X, a_Y - (Section * SectionHeight), a_Z);
return m_Sections[Section]->m_BlockTypes[Index];
}
else
@@ -112,6 +165,10 @@ BLOCKTYPE cChunkData::GetBlock(int a_X, int a_Y, int a_Z) const
}
}
+
+
+
+
void cChunkData::SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block)
{
if (
@@ -124,7 +181,7 @@ void cChunkData::SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block)
return;
}
- int Section = a_RelY / CHUNK_SECTION_HEIGHT;
+ int Section = a_RelY / SectionHeight;
if (m_Sections[Section] == NULL)
{
if (a_Block == 0x00)
@@ -139,10 +196,14 @@ void cChunkData::SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block)
}
ZeroSection(m_Sections[Section]);
}
- int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
+ int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * SectionHeight), a_RelZ);
m_Sections[Section]->m_BlockTypes[Index] = a_Block;
}
+
+
+
+
NIBBLETYPE cChunkData::GetMeta(int a_RelX, int a_RelY, int a_RelZ) const
{
if (
@@ -150,11 +211,11 @@ NIBBLETYPE cChunkData::GetMeta(int a_RelX, int a_RelY, int a_RelZ) const
(a_RelY < cChunkDef::Height) && (a_RelY > -1) &&
(a_RelZ < cChunkDef::Width) && (a_RelZ > -1))
{
- int Section = a_RelY / CHUNK_SECTION_HEIGHT;
+ int Section = a_RelY / SectionHeight;
if (m_Sections[Section] != NULL)
{
- int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
- return (m_Sections[Section]->m_BlockMeta[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
+ int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * SectionHeight), a_RelZ);
+ return (m_Sections[Section]->m_BlockMetas[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
}
else
{
@@ -165,6 +226,10 @@ NIBBLETYPE cChunkData::GetMeta(int a_RelX, int a_RelY, int a_RelZ) const
return 0;
}
+
+
+
+
bool cChunkData::SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Nibble)
{
if (
@@ -177,7 +242,7 @@ bool cChunkData::SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Nibble
return false;
}
- int Section = a_RelY / CHUNK_SECTION_HEIGHT;
+ int Section = a_RelY / SectionHeight;
if (m_Sections[Section] == NULL)
{
if ((a_Nibble & 0xf) == 0x00)
@@ -192,23 +257,31 @@ bool cChunkData::SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Nibble
}
ZeroSection(m_Sections[Section]);
}
- int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
- NIBBLETYPE oldval = m_Sections[Section]->m_BlockMeta[Index / 2] >> ((Index & 1) * 4) & 0xf;
- m_Sections[Section]->m_BlockMeta[Index / 2] = static_cast<NIBBLETYPE>(
- (m_Sections[Section]->m_BlockMeta[Index / 2] & (0xf0 >> ((Index & 1) * 4))) | // The untouched nibble
+ int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * SectionHeight), a_RelZ);
+ NIBBLETYPE oldval = m_Sections[Section]->m_BlockMetas[Index / 2] >> ((Index & 1) * 4) & 0xf;
+ m_Sections[Section]->m_BlockMetas[Index / 2] = static_cast<NIBBLETYPE>(
+ (m_Sections[Section]->m_BlockMetas[Index / 2] & (0xf0 >> ((Index & 1) * 4))) | // The untouched nibble
((a_Nibble & 0x0f) << ((Index & 1) * 4)) // The nibble being set
);
- return oldval == a_Nibble;
+ return oldval != a_Nibble;
}
+
+
+
+
NIBBLETYPE cChunkData::GetBlockLight(int a_RelX, int a_RelY, int a_RelZ) const
{
- if ((a_RelX < cChunkDef::Width) && (a_RelX > -1) && (a_RelY < cChunkDef::Height) && (a_RelY > -1) && (a_RelZ < cChunkDef::Width) && (a_RelZ > -1))
+ if (
+ (a_RelX < cChunkDef::Width) && (a_RelX > -1) &&
+ (a_RelY < cChunkDef::Height) && (a_RelY > -1) &&
+ (a_RelZ < cChunkDef::Width) && (a_RelZ > -1)
+ )
{
- int Section = a_RelY / CHUNK_SECTION_HEIGHT;
+ int Section = a_RelY / SectionHeight;
if (m_Sections[Section] != NULL)
{
- int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
+ int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * SectionHeight), a_RelZ);
return (m_Sections[Section]->m_BlockLight[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
}
else
@@ -220,15 +293,19 @@ NIBBLETYPE cChunkData::GetBlockLight(int a_RelX, int a_RelY, int a_RelZ) const
return 0;
}
+
+
+
+
NIBBLETYPE cChunkData::GetSkyLight(int a_RelX, int a_RelY, int a_RelZ) const
{
if ((a_RelX < cChunkDef::Width) && (a_RelX > -1) && (a_RelY < cChunkDef::Height) && (a_RelY > -1) && (a_RelZ < cChunkDef::Width) && (a_RelZ > -1))
{
- int Section = a_RelY / CHUNK_SECTION_HEIGHT;
+ int Section = a_RelY / SectionHeight;
if (m_Sections[Section] != NULL)
{
- int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ);
- return (m_Sections[Section]->m_BlockLight[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
+ int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * SectionHeight), a_RelZ);
+ return (m_Sections[Section]->m_BlockSkyLight[Index / 2] >> ((Index & 1) * 4)) & 0x0f;
}
else
{
@@ -239,10 +316,14 @@ NIBBLETYPE cChunkData::GetSkyLight(int a_RelX, int a_RelY, int a_RelZ) const
return 0;
}
-cChunkData cChunkData::Copy() const
+
+
+
+
+cChunkData cChunkData::Copy(void) const
{
cChunkData copy(m_Pool);
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ for (size_t i = 0; i < NumSections; i++)
{
if (m_Sections[i] != NULL)
{
@@ -257,34 +338,30 @@ cChunkData cChunkData::Copy() const
-void cChunkData::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length) const
+void cChunkData::CopyBlockTypes(BLOCKTYPE * a_Dest, size_t a_Idx, size_t a_Length) const
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ size_t ToSkip = a_Idx;
+
+ for (size_t i = 0; i < NumSections; i++)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16;
- if (a_Idx > 0)
+ size_t StartPos = 0;
+ if (ToSkip > 0)
{
- a_Idx = std::max(a_Idx - length, (size_t) 0);
+ StartPos = std::min(ToSkip, +SectionBlockCount);
+ ToSkip -= StartPos;
}
- if (a_Idx == 0)
+ if (StartPos < SectionBlockCount)
{
- size_t tocopy = std::min(segment_length, length);
- length -= tocopy;
+ size_t ToCopy = std::min(+SectionBlockCount - StartPos, a_Length);
+ a_Length -= ToCopy;
if (m_Sections[i] != NULL)
{
- memcpy(
- &a_dest[i * segment_length],
- &m_Sections[i]->m_BlockTypes,
- sizeof(BLOCKTYPE) * tocopy
- );
+ BLOCKTYPE * blockbuffer = m_Sections[i]->m_BlockTypes;
+ memcpy(&a_Dest[(i * SectionBlockCount) + StartPos - a_Idx], blockbuffer + StartPos, sizeof(BLOCKTYPE) * ToCopy);
}
else
{
- memset(
- &a_dest[i * segment_length],
- 0,
- sizeof(BLOCKTYPE) * tocopy
- );
+ memset(&a_Dest[(i * SectionBlockCount) - a_Idx], 0, sizeof(BLOCKTYPE) * ToCopy);
}
}
}
@@ -294,26 +371,17 @@ void cChunkData::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length)
-void cChunkData::CopyMeta(NIBBLETYPE * a_dest) const
+void cChunkData::CopyMetas(NIBBLETYPE * a_Dest) const
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ for (size_t i = 0; i < NumSections; i++)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
if (m_Sections[i] != NULL)
{
- memcpy(
- &a_dest[i * segment_length],
- &m_Sections[i]->m_BlockMeta,
- sizeof(NIBBLETYPE) * segment_length
- );
+ memcpy(&a_Dest[i * SectionBlockCount / 2], &m_Sections[i]->m_BlockMetas, sizeof(m_Sections[i]->m_BlockMetas));
}
else
{
- memset(
- &a_dest[i * segment_length],
- 0,
- sizeof(BLOCKTYPE) * segment_length
- );
+ memset(&a_Dest[i * SectionBlockCount / 2], 0, sizeof(m_Sections[i]->m_BlockMetas));
}
}
}
@@ -322,26 +390,17 @@ void cChunkData::CopyMeta(NIBBLETYPE * a_dest) const
-void cChunkData::CopyBlockLight(NIBBLETYPE * a_dest) const
+void cChunkData::CopyBlockLight(NIBBLETYPE * a_Dest) const
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ for (size_t i = 0; i < NumSections; i++)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
if (m_Sections[i] != NULL)
{
- memcpy(
- &a_dest[i * segment_length],
- &m_Sections[i]->m_BlockLight,
- sizeof(NIBBLETYPE) * segment_length
- );
+ memcpy(&a_Dest[i * SectionBlockCount / 2], &m_Sections[i]->m_BlockLight, sizeof(m_Sections[i]->m_BlockLight));
}
else
{
- memset(
- &a_dest[i * segment_length],
- 0,
- sizeof(BLOCKTYPE) * segment_length
- );
+ memset(&a_Dest[i * SectionBlockCount / 2], 0, sizeof(m_Sections[i]->m_BlockLight));
}
}
}
@@ -350,26 +409,17 @@ void cChunkData::CopyBlockLight(NIBBLETYPE * a_dest) const
-void cChunkData::CopySkyLight(NIBBLETYPE * a_dest) const
+void cChunkData::CopySkyLight(NIBBLETYPE * a_Dest) const
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ for (size_t i = 0; i < NumSections; i++)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
if (m_Sections[i] != NULL)
{
- memcpy(
- &a_dest[i * segment_length],
- &m_Sections[i]->m_BlockSkyLight,
- sizeof(NIBBLETYPE) * segment_length
- );
+ memcpy(&a_Dest[i * SectionBlockCount / 2], &m_Sections[i]->m_BlockSkyLight, sizeof(m_Sections[i]->m_BlockSkyLight));
}
else
{
- memset(
- &a_dest[i * segment_length],
- 0xFF,
- sizeof(BLOCKTYPE) * segment_length
- );
+ memset(&a_Dest[i * SectionBlockCount / 2], 0xff, sizeof(m_Sections[i]->m_BlockSkyLight));
}
}
}
@@ -378,255 +428,166 @@ void cChunkData::CopySkyLight(NIBBLETYPE * a_dest) const
-void cChunkData::SetBlocks(const BLOCKTYPE * a_src)
+void cChunkData::SetBlockTypes(const BLOCKTYPE * a_Src)
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ ASSERT(a_Src != NULL);
+
+ for (size_t i = 0; i < NumSections; i++)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16;
+ // If the section is already allocated, copy the data into it:
if (m_Sections[i] != NULL)
{
- memcpy(
- &m_Sections[i]->m_BlockTypes,
- &a_src[i * segment_length],
- sizeof(BLOCKTYPE) * segment_length
- );
+ memcpy(m_Sections[i]->m_BlockTypes, &a_Src[i * SectionBlockCount], sizeof(m_Sections[i]->m_BlockTypes));
+ continue;
}
- else
+
+ // The section doesn't exist, find out if it is needed:
+ if (IsAllValue(a_Src + i * SectionBlockCount, SectionBlockCount, (const BLOCKTYPE)0))
{
- // j counts how many of leading zeros the buffer has
- // if j == segment_length then the buffer is all zeros so there is no point
- // creating the buffer.
- size_t j = 0;
- // do nothing whilst 0
- for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
- if (j != segment_length)
- {
- m_Sections[i] = Allocate();
- memcpy(
- &m_Sections[i]->m_BlockTypes,
- &a_src[i * segment_length],
- sizeof(BLOCKTYPE) * segment_length
- );
- memset(
- m_Sections[i]->m_BlockMeta,
- 0x00,
- sizeof(m_Sections[i]->m_BlockMeta)
- );
- memset(
- m_Sections[i]->m_BlockLight,
- 0x00,
- sizeof(m_Sections[i]->m_BlockLight)
- );
- memset(
- m_Sections[i]->m_BlockSkyLight,
- 0xFF,
- sizeof(m_Sections[i]->m_BlockSkyLight)
- );
- }
+ // No need for the section, the data is all-air
+ continue;
}
- }
+
+ // Allocate the section and copy the data into it:
+ m_Sections[i] = Allocate();
+ memcpy(m_Sections[i]->m_BlockTypes, &a_Src[i * SectionBlockCount], sizeof(m_Sections[i]->m_BlockTypes));
+ memset(m_Sections[i]->m_BlockMetas, 0x00, sizeof(m_Sections[i]->m_BlockMetas));
+ memset(m_Sections[i]->m_BlockLight, 0x00, sizeof(m_Sections[i]->m_BlockLight));
+ memset(m_Sections[i]->m_BlockSkyLight, 0xff, sizeof(m_Sections[i]->m_BlockSkyLight));
+ } // for i - m_Sections[]
}
-void cChunkData::SetMeta(const NIBBLETYPE * a_src)
+void cChunkData::SetMetas(const NIBBLETYPE * a_Src)
{
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ ASSERT(a_Src != NULL);
+
+ for (size_t i = 0; i < NumSections; i++)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
+ // If the section is already allocated, copy the data into it:
if (m_Sections[i] != NULL)
{
- memcpy(
- &m_Sections[i]->m_BlockMeta,
- &a_src[i * segment_length],
- sizeof(NIBBLETYPE) * segment_length
- );
+ memcpy(m_Sections[i]->m_BlockMetas, &a_Src[i * SectionBlockCount / 2], sizeof(m_Sections[i]->m_BlockMetas));
+ continue;
}
- else
+
+ // The section doesn't exist, find out if it is needed:
+ if (IsAllValue(a_Src + i * SectionBlockCount / 2, SectionBlockCount / 2, (NIBBLETYPE)0))
{
- size_t j = 0;
- // do nothing whilst 0
- for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
- if (j != segment_length)
- {
- m_Sections[i] = Allocate();
- memcpy(
- &m_Sections[i]->m_BlockMeta,
- &a_src[i * segment_length],
- sizeof(BLOCKTYPE) * segment_length
- );
- memset(
- m_Sections[i]->m_BlockTypes,
- 0x00,
- sizeof(m_Sections[i]->m_BlockTypes)
- );
- memset(
- m_Sections[i]->m_BlockLight,
- 0x00,
- sizeof(m_Sections[i]->m_BlockLight)
- );
- memset(
- m_Sections[i]->m_BlockSkyLight,
- 0xFF,
- sizeof(m_Sections[i]->m_BlockSkyLight)
- );
- }
- else
- {
- Free(m_Sections[i]);
- m_Sections[i] = 0;
- }
+ // No need for the section, the data is all zeroes
+ continue;
}
- }
+
+ // Allocate the section and copy the data into it:
+ m_Sections[i] = Allocate();
+ memcpy(m_Sections[i]->m_BlockMetas, &a_Src[i * SectionBlockCount / 2], sizeof(m_Sections[i]->m_BlockMetas));
+ memset(m_Sections[i]->m_BlockTypes, 0x00, sizeof(m_Sections[i]->m_BlockTypes));
+ memset(m_Sections[i]->m_BlockLight, 0x00, sizeof(m_Sections[i]->m_BlockLight));
+ memset(m_Sections[i]->m_BlockSkyLight, 0xff, sizeof(m_Sections[i]->m_BlockSkyLight));
+ } // for i - m_Sections[]
}
-void cChunkData::SetBlockLight(const NIBBLETYPE * a_src)
+
+void cChunkData::SetBlockLight(const NIBBLETYPE * a_Src)
{
- if (!a_src) return;
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ if (a_Src == NULL)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
+ return;
+ }
+
+ for (size_t i = 0; i < NumSections; i++)
+ {
+ // If the section is already allocated, copy the data into it:
if (m_Sections[i] != NULL)
{
- memcpy(
- &m_Sections[i]->m_BlockLight,
- &a_src[i * segment_length],
- sizeof(NIBBLETYPE) * segment_length
- );
+ memcpy(m_Sections[i]->m_BlockLight, &a_Src[i * SectionBlockCount / 2], sizeof(m_Sections[i]->m_BlockLight));
+ continue;
}
- else
+
+ // The section doesn't exist, find out if it is needed:
+ if (IsAllValue(a_Src + i * SectionBlockCount / 2, SectionBlockCount / 2, (NIBBLETYPE)0))
{
- size_t j = 0;
- // do nothing whilst 0
- for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
- if (j != segment_length)
- {
- m_Sections[i] = Allocate();
- memcpy(
- &m_Sections[i]->m_BlockLight,
- &a_src[i * segment_length],
- sizeof(BLOCKTYPE) * segment_length
- );
- memset(
- m_Sections[i]->m_BlockTypes,
- 0x00,
- sizeof(m_Sections[i]->m_BlockTypes)
- );
- memset(
- m_Sections[i]->m_BlockMeta,
- 0x00,
- sizeof(m_Sections[i]->m_BlockMeta)
- );
- memset(
- m_Sections[i]->m_BlockSkyLight,
- 0xFF,
- sizeof(m_Sections[i]->m_BlockSkyLight)
- );
- }
- else
- {
- Free(m_Sections[i]);
- m_Sections[i] = 0;
- }
+ // No need for the section, the data is all zeroes
+ continue;
}
- }
+
+ // Allocate the section and copy the data into it:
+ m_Sections[i] = Allocate();
+ memcpy(m_Sections[i]->m_BlockLight, &a_Src[i * SectionBlockCount / 2], sizeof(m_Sections[i]->m_BlockLight));
+ memset(m_Sections[i]->m_BlockTypes, 0x00, sizeof(m_Sections[i]->m_BlockTypes));
+ memset(m_Sections[i]->m_BlockMetas, 0x00, sizeof(m_Sections[i]->m_BlockMetas));
+ memset(m_Sections[i]->m_BlockSkyLight, 0xff, sizeof(m_Sections[i]->m_BlockSkyLight));
+ } // for i - m_Sections[]
}
-void cChunkData::SetSkyLight (const NIBBLETYPE * a_src)
+void cChunkData::SetSkyLight(const NIBBLETYPE * a_Src)
{
- if (!a_src) return;
- for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
+ if (a_Src == NULL)
{
- const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
+ return;
+ }
+
+ for (size_t i = 0; i < NumSections; i++)
+ {
+ // If the section is already allocated, copy the data into it:
if (m_Sections[i] != NULL)
{
- memcpy(
- &m_Sections[i]->m_BlockSkyLight,
- &a_src[i * segment_length],
- sizeof(NIBBLETYPE) * segment_length
- );
+ memcpy(m_Sections[i]->m_BlockSkyLight, &a_Src[i * SectionBlockCount / 2], sizeof(m_Sections[i]->m_BlockSkyLight));
+ continue;
}
- else
+
+ // The section doesn't exist, find out if it is needed:
+ if (IsAllValue(a_Src + i * SectionBlockCount / 2, SectionBlockCount / 2, (NIBBLETYPE)0xff))
{
- size_t j = 0;
- // do nothing whilst 0
- for (; j < segment_length && a_src[i * segment_length + j] == 0xFF; j++);
- if (j != segment_length)
- {
- m_Sections[i] = Allocate();
- memcpy(
- &m_Sections[i]->m_BlockSkyLight,
- &a_src[i * segment_length],
- sizeof(BLOCKTYPE) * segment_length
- );
- memset(
- m_Sections[i]->m_BlockTypes,
- 0x00,
- sizeof(m_Sections[i]->m_BlockTypes)
- );
- memset(
- m_Sections[i]->m_BlockMeta,
- 0x00,
- sizeof(m_Sections[i]->m_BlockMeta)
- );
- memset(
- m_Sections[i]->m_BlockLight,
- 0x00,
- sizeof(m_Sections[i]->m_BlockLight)
- );
- }
+ // No need for the section, the data is all zeroes
+ continue;
}
- }
+
+ // Allocate the section and copy the data into it:
+ m_Sections[i] = Allocate();
+ memcpy(m_Sections[i]->m_BlockSkyLight, &a_Src[i * SectionBlockCount / 2], sizeof(m_Sections[i]->m_BlockSkyLight));
+ memset(m_Sections[i]->m_BlockTypes, 0x00, sizeof(m_Sections[i]->m_BlockTypes));
+ memset(m_Sections[i]->m_BlockMetas, 0x00, sizeof(m_Sections[i]->m_BlockMetas));
+ memset(m_Sections[i]->m_BlockLight, 0x00, sizeof(m_Sections[i]->m_BlockLight));
+ } // for i - m_Sections[]
}
-cChunkData::sChunkSection * cChunkData::Allocate() const
+cChunkData::sChunkSection * cChunkData::Allocate(void)
{
- // TODO: use a allocation pool
return m_Pool.Allocate();
}
-void cChunkData::Free(cChunkData::sChunkSection * ptr) const
+
+
+void cChunkData::Free(cChunkData::sChunkSection * a_Section)
{
- m_Pool.Free(ptr);
+ m_Pool.Free(a_Section);
}
-void cChunkData::ZeroSection(cChunkData::sChunkSection * ptr) const
+
+
+void cChunkData::ZeroSection(cChunkData::sChunkSection * a_Section) const
{
- memset(
- ptr->m_BlockTypes,
- 0x00,
- sizeof(ptr->m_BlockTypes)
- );
- memset(
- ptr->m_BlockMeta,
- 0x00,
- sizeof(ptr->m_BlockMeta)
- );
- memset(
- ptr->m_BlockLight,
- 0x00,
- sizeof(ptr->m_BlockLight)
- );
- memset(
- ptr->m_BlockSkyLight,
- 0xFF,
- sizeof(ptr->m_BlockSkyLight)
- );
+ memset(a_Section->m_BlockTypes, 0x00, sizeof(a_Section->m_BlockTypes));
+ memset(a_Section->m_BlockMetas, 0x00, sizeof(a_Section->m_BlockMetas));
+ memset(a_Section->m_BlockLight, 0x00, sizeof(a_Section->m_BlockLight));
+ memset(a_Section->m_BlockSkyLight, 0xff, sizeof(a_Section->m_BlockSkyLight));
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 05:17:19 +0200