diff options
Diffstat (limited to '')
| -rw-r--r-- | src/ChunkBuffer.cpp | 147 |
1 files changed, 133 insertions, 14 deletions
diff --git a/src/ChunkBuffer.cpp b/src/ChunkBuffer.cpp index 8e87d3049..7946fba1e 100644 --- a/src/ChunkBuffer.cpp +++ b/src/ChunkBuffer.cpp @@ -22,7 +22,7 @@ cChunkBuffer cChunkBuffer::Copy() const void cChunkBuffer::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length) const { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + 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; @@ -30,7 +30,22 @@ void cChunkBuffer::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length { size_t tocopy = length > segment_length ? segment_length : length; length -= tocopy; - memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockTypes, sizeof(BLOCKTYPE) * length); + 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 + ); + } } } } @@ -41,10 +56,24 @@ void cChunkBuffer::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length void cChunkBuffer::CopyMeta(NIBBLETYPE * a_dest) const { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; - memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockMeta, sizeof(NIBBLETYPE) * segment_length); + 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 + ); + } } } @@ -54,10 +83,25 @@ void cChunkBuffer::CopyMeta(NIBBLETYPE * a_dest) const void cChunkBuffer::CopyLight(NIBBLETYPE * a_dest) const { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; - memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockLight, sizeof(NIBBLETYPE) * segment_length); + 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 + ); + } } } @@ -67,10 +111,25 @@ void cChunkBuffer::CopyLight(NIBBLETYPE * a_dest) const void cChunkBuffer::CopySkyLight(NIBBLETYPE * a_dest) const { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_NUM; i++) { const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2; - memcpy(&a_dest[i * segment_length], &m_Sections[i]->m_BlockSkyLight, sizeof(NIBBLETYPE) * segment_length); + 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 + ); + } } } @@ -80,13 +139,28 @@ void cChunkBuffer::CopySkyLight(NIBBLETYPE * a_dest) const void cChunkBuffer::SetBlocks(const BLOCKTYPE * a_src) { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + 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 + ); + } + } } } @@ -95,13 +169,28 @@ void cChunkBuffer::SetBlocks(const BLOCKTYPE * a_src) void cChunkBuffer::SetMeta(const NIBBLETYPE * a_src) { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + 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_BlockTypes, + &a_src[i * segment_length], + sizeof(BLOCKTYPE) * segment_length + ); + } + } } } @@ -110,14 +199,29 @@ void cChunkBuffer::SetMeta(const NIBBLETYPE * a_src) void cChunkBuffer::SetLight(const NIBBLETYPE * a_src) { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + 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_BlockTypes, + &a_src[i * segment_length], + sizeof(BLOCKTYPE) * segment_length + ); + } + } + } } @@ -125,14 +229,29 @@ void cChunkBuffer::SetLight(const NIBBLETYPE * a_src) void cChunkBuffer::SetSkyLight (const NIBBLETYPE * a_src) { - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + 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_BlockTypes, + &a_src[i * segment_length], + sizeof(BLOCKTYPE) * segment_length + ); + } + } + } } |