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Diffstat (limited to '')
| -rw-r--r-- | src/ChunkBuffer.cpp | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/src/ChunkBuffer.cpp b/src/ChunkBuffer.cpp new file mode 100644 index 000000000..a41b8f61a --- /dev/null +++ b/src/ChunkBuffer.cpp @@ -0,0 +1,297 @@ + +#include "Globals.h" +#include "ChunkBuffer.h" + +cChunkBuffer cChunkBuffer::Copy() const +{ + cChunkBuffer copy; + for (int i = 0; i < CHUNK_SECTION_NUM; i++) + { + if(m_Sections[i]) + { + copy.m_Sections[i] = Allocate(); + *copy.m_Sections[i] = *m_Sections[i]; + } + } + return copy; +} + + + + + +void cChunkBuffer::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length) const +{ + for (size_t i = 0; i < CHUNK_SECTION_NUM; 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) + { + size_t tocopy = length > segment_length ? segment_length : length; + length -= tocopy; + if(m_Sections[i]) + { + memcpy( + &a_dest[i * segment_length], + &m_Sections[i]->m_BlockTypes, + sizeof(BLOCKTYPE) * length + ); + } + else + { + memset( + &a_dest[i * segment_length], + 0, + sizeof(BLOCKTYPE) * length + ); + } + } + } +} + + + + + +void cChunkBuffer::CopyMeta(NIBBLETYPE * a_dest) const +{ + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + { + const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; + if(m_Sections[i]) + { + memcpy( + &a_dest[i * segment_length], + &m_Sections[i]->m_BlockMeta, + sizeof(NIBBLETYPE) * segment_length); + } + else + { + memset( + &a_dest[i * segment_length], + 0, + sizeof(BLOCKTYPE) * segment_length + ); + } + } +} + + + + + +void cChunkBuffer::CopyLight(NIBBLETYPE * a_dest) const +{ + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + { + const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; + if(m_Sections[i]) + { + memcpy( + &a_dest[i * segment_length], + &m_Sections[i]->m_BlockLight, + sizeof(NIBBLETYPE) * segment_length + ); + } + else + { + memset( + &a_dest[i * segment_length], + 0, + sizeof(BLOCKTYPE) * segment_length + ); + } + } +} + + + + + +void cChunkBuffer::CopySkyLight(NIBBLETYPE * a_dest) const +{ + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + { + const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; + if(m_Sections[i]) + { + memcpy( + &a_dest[i * segment_length], + &m_Sections[i]->m_BlockSkyLight, + sizeof(NIBBLETYPE) * segment_length + ); + } + else + { + memset( + &a_dest[i * segment_length], + 0xFF, + sizeof(BLOCKTYPE) * segment_length + ); + } + } +} + + + + + +void cChunkBuffer::SetBlocks(const BLOCKTYPE * a_src) +{ + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + { + const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; + if (m_Sections[i]) + { + memcpy(&m_Sections[i]->m_BlockTypes, &a_src[i * segment_length], sizeof(BLOCKTYPE) * segment_length); + } + else + { + 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 + ); + } + else + { + Free(m_Sections[i]); + m_Sections[i] = 0; + } + } + } +} + + + + +void cChunkBuffer::SetMeta(const NIBBLETYPE * a_src) +{ + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + { + const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; + if (m_Sections[i]) + { + memcpy(&m_Sections[i]->m_BlockMeta, &a_src[i * segment_length], sizeof(NIBBLETYPE) * segment_length); + } + else + { + 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 + ); + } + else + { + Free(m_Sections[i]); + m_Sections[i] = 0; + } + } + } +} + + + + +void cChunkBuffer::SetLight(const NIBBLETYPE * a_src) +{ + if (!a_src) return; + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + { + const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; + if (m_Sections[i]) + { + memcpy(&m_Sections[i]->m_BlockLight, &a_src[i * segment_length], sizeof(NIBBLETYPE) * segment_length); + } + else + { + 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 + ); + } + else + { + Free(m_Sections[i]); + m_Sections[i] = 0; + } + } + } +} + + + + +void cChunkBuffer::SetSkyLight (const NIBBLETYPE * a_src) +{ + if (!a_src) return; + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) + { + const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; + if (m_Sections[i]) + { + memcpy(&m_Sections[i]->m_BlockSkyLight, &a_src[i * segment_length], sizeof(NIBBLETYPE) * segment_length); + } + else + { + 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 + ); + } + else + { + Free(m_Sections[i]); + m_Sections[i] = 0; + } + } + } +} + + + + + +cChunkBuffer::sChunkSection * cChunkBuffer::Allocate() const +{ + // TODO: use a allocation pool + return new cChunkBuffer::sChunkSection; +} + + + +void cChunkBuffer::Free(cChunkBuffer::sChunkSection * ptr) const +{ + delete ptr; +} + + + |