diff options
Diffstat (limited to 'src/ChunkData.cpp')
| -rw-r--r-- | src/ChunkData.cpp | 269 |
1 files changed, 251 insertions, 18 deletions
diff --git a/src/ChunkData.cpp b/src/ChunkData.cpp index 31de364b9..1bc3072c2 100644 --- a/src/ChunkData.cpp +++ b/src/ChunkData.cpp @@ -1,7 +1,244 @@ +#ifdef TEST_GLOBALS +#include "TestGlobals.h" +#else #include "Globals.h" +#endif #include "ChunkData.h" +cChunkData::cChunkData(cAllocationPool<cChunkData::sChunkSection, 1600>& a_Pool) : +#if __cplusplus < 201103L + // auto_ptr style interface for memory management + IsOwner(true), +#endif +m_Pool(a_Pool) +{ + memset(m_Sections, 0, sizeof(m_Sections)); +} + + +cChunkData::~cChunkData() +{ + #if __cplusplus < 201103L + // auto_ptr style interface for memory management + if (!IsOwner) + { + return; + } + #endif + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) + { + if (m_Sections[i] == NULL) Free(m_Sections[i]);; + } +} + +#if __cplusplus < 201103L + // auto_ptr style interface for memory management + cChunkData::cChunkData(const cChunkData& other) : + IsOwner(true), + m_Pool(other.m_Pool) + { + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) + { + m_Sections[i] = other.m_Sections[i]; + } + other.IsOwner = false; + } + + cChunkData& cChunkData::operator=(const cChunkData& other) + { + if (&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++) + { + m_Sections[i] = other.m_Sections[i]; + } + other.IsOwner = false; + ASSERT(&m_Pool == &other.m_Pool); + } + return *this; + + } +#else + // unique_ptr style interface for memory management + cChunkData::cChunkData(cChunkData&& other) : + m_Pool(other.m_Pool) + { + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) + { + m_Sections[i] = other.m_Sections[i]; + other.m_Sections[i] = NULL; + } + } + + cChunkData& cChunkData::operator=(cChunkData&& other) + { + if (&other != this) + { + ASSERT(&m_Pool == &other.m_Pool); + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) + { + Free(m_Sections[i]);; + m_Sections[i] = other.m_Sections[i]; + other.m_Sections[i] = NULL; + } + } + return *this; + } +#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; + if (m_Sections[Section] != NULL) + { + int Index = cChunkDef::MakeIndexNoCheck(a_X, a_Y - (Section * CHUNK_SECTION_HEIGHT), a_Z); + return m_Sections[Section]->m_BlockTypes[Index]; + } + else + { + return 0; + } +} + +void cChunkData::SetBlock(int a_RelX, int a_RelY, int a_RelZ, BLOCKTYPE a_Block) +{ + if ( + (a_RelX >= cChunkDef::Width) || (a_RelX < 0) || + (a_RelY >= cChunkDef::Height) || (a_RelY < 0) || + (a_RelZ >= cChunkDef::Width) || (a_RelZ < 0) + ) + { + ASSERT(!"cChunkData::SetMeta(): index out of range!"); + return; + } + + int Section = a_RelY / CHUNK_SECTION_HEIGHT; + if (m_Sections[Section] == NULL) + { + if (a_Block == 0x00) + { + return; + } + m_Sections[Section] = Allocate(); + if (m_Sections[Section] == NULL) + { + ASSERT(!"Failed to allocate a new section in Chunkbuffer"); + return; + } + ZeroSection(m_Sections[Section]); + } + int Index = cChunkDef::MakeIndexNoCheck(a_RelX, a_RelY - (Section * CHUNK_SECTION_HEIGHT), a_RelZ); + m_Sections[Section]->m_BlockTypes[Index] = a_Block; +} + +NIBBLETYPE cChunkData::GetMeta(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; + 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; + } + else + { + return 0; + } + } + ASSERT(!"cChunkData::GetMeta(): coords out of chunk range!"); + return 0; +} + +bool cChunkData::SetMeta(int a_RelX, int a_RelY, int a_RelZ, NIBBLETYPE a_Nibble) +{ + if ( + (a_RelX >= cChunkDef::Width) || (a_RelX < 0) || + (a_RelY >= cChunkDef::Height) || (a_RelY < 0) || + (a_RelZ >= cChunkDef::Width) || (a_RelZ < 0) + ) + { + ASSERT(!"cChunkData::SetMeta(): index out of range!"); + return false; + } + + int Section = a_RelY / CHUNK_SECTION_HEIGHT; + if (m_Sections[Section] == NULL) + { + if ((a_Nibble & 0xf) == 0x00) + { + return false; + } + m_Sections[Section] = Allocate(); + if (m_Sections[Section] == NULL) + { + ASSERT(!"Failed to allocate a new section in Chunkbuffer"); + return false; + } + 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 + ((a_Nibble & 0x0f) << ((Index & 1) * 4)) // The nibble being set + ); + 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)) + { + int Section = a_RelY / CHUNK_SECTION_HEIGHT; + 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; + } + else + { + return 0; + } + } + ASSERT(!"cChunkData::GetMeta(): coords out of chunk range!"); + 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; + 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; + } + else + { + return 0xF; + } + } + ASSERT(!"cChunkData::GetMeta(): coords out of chunk range!"); + return 0; +} + cChunkData cChunkData::Copy() const { cChunkData copy(m_Pool); @@ -22,13 +259,16 @@ cChunkData cChunkData::Copy() const void cChunkData::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length) const { - for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16; - if (a_Idx > 0) a_Idx = a_Idx > length ? a_Idx - length : 0; + if (a_Idx > 0) + { + a_Idx = std::max(a_Idx - length, (size_t) 0); + } if (a_Idx == 0) { - size_t tocopy = length > segment_length ? segment_length : length; + size_t tocopy = std::min(segment_length, length); length -= tocopy; if (m_Sections[i] != NULL) { @@ -56,7 +296,7 @@ void cChunkData::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length) void cChunkData::CopyMeta(NIBBLETYPE * a_dest) const { - for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; if (m_Sections[i] != NULL) @@ -82,9 +322,9 @@ void cChunkData::CopyMeta(NIBBLETYPE * a_dest) const -void cChunkData::CopyLight(NIBBLETYPE * a_dest) const +void cChunkData::CopyBlockLight(NIBBLETYPE * a_dest) const { - for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; if (m_Sections[i] != NULL) @@ -112,7 +352,7 @@ void cChunkData::CopyLight(NIBBLETYPE * a_dest) const void cChunkData::CopySkyLight(NIBBLETYPE * a_dest) const { - for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; if (m_Sections[i] != NULL) @@ -140,7 +380,7 @@ void cChunkData::CopySkyLight(NIBBLETYPE * a_dest) const void cChunkData::SetBlocks(const BLOCKTYPE * a_src) { - for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16; if (m_Sections[i] != NULL) @@ -153,6 +393,9 @@ void cChunkData::SetBlocks(const BLOCKTYPE * a_src) } else { + // 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++); @@ -180,11 +423,6 @@ void cChunkData::SetBlocks(const BLOCKTYPE * a_src) sizeof(m_Sections[i]->m_BlockSkyLight) ); } - else - { - Free(m_Sections[i]); - m_Sections[i] = 0; - } } } } @@ -344,11 +582,6 @@ void cChunkData::SetSkyLight (const NIBBLETYPE * a_src) sizeof(m_Sections[i]->m_BlockLight) ); } - else - { - Free(m_Sections[i]); - m_Sections[i] = 0; - } } } } |