diff options
Diffstat (limited to 'src/ChunkData.cpp')
| -rw-r--r-- | src/ChunkData.cpp | 61 |
1 files changed, 28 insertions, 33 deletions
diff --git a/src/ChunkData.cpp b/src/ChunkData.cpp index 86b0c431c..098f436f8 100644 --- a/src/ChunkData.cpp +++ b/src/ChunkData.cpp @@ -5,7 +5,7 @@ cChunkData cChunkData::Copy() const { cChunkData copy; - for (int i = 0; i < CHUNK_SECTION_NUM; i++) + for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++) { if (m_Sections[i] != NULL) { @@ -22,13 +22,16 @@ 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 +59,7 @@ 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 +85,9 @@ 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 +115,7 @@ 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 +143,7 @@ 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 +156,9 @@ 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 +186,6 @@ void cChunkData::SetBlocks(const BLOCKTYPE * a_src) sizeof(m_Sections[i]->m_BlockSkyLight) ); } - else - { - Free(m_Sections[i]); - m_Sections[i] = 0; - } } } } @@ -194,7 +195,7 @@ void cChunkData::SetBlocks(const BLOCKTYPE * a_src) void cChunkData::SetMeta(const NIBBLETYPE * 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 / 2; if (m_Sections[i] != NULL) @@ -207,6 +208,9 @@ void cChunkData::SetMeta(const NIBBLETYPE * 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++); @@ -234,11 +238,6 @@ void cChunkData::SetMeta(const NIBBLETYPE * a_src) sizeof(m_Sections[i]->m_BlockSkyLight) ); } - else - { - Free(m_Sections[i]); - m_Sections[i] = 0; - } } } } @@ -246,10 +245,10 @@ void cChunkData::SetMeta(const NIBBLETYPE * a_src) -void cChunkData::SetLight(const NIBBLETYPE * a_src) +void cChunkData::SetBlockLight(const NIBBLETYPE * a_src) { if (!a_src) return; - 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) @@ -262,6 +261,9 @@ void cChunkData::SetLight(const NIBBLETYPE * 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++); @@ -289,11 +291,6 @@ void cChunkData::SetLight(const NIBBLETYPE * a_src) sizeof(m_Sections[i]->m_BlockSkyLight) ); } - else - { - Free(m_Sections[i]); - m_Sections[i] = 0; - } } } } @@ -304,7 +301,7 @@ void cChunkData::SetLight(const NIBBLETYPE * a_src) void cChunkData::SetSkyLight (const NIBBLETYPE * a_src) { if (!a_src) return; - 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) @@ -317,6 +314,9 @@ void cChunkData::SetSkyLight (const NIBBLETYPE * 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] == 0xFF; j++); @@ -344,11 +344,6 @@ void cChunkData::SetSkyLight (const NIBBLETYPE * a_src) sizeof(m_Sections[i]->m_BlockLight) ); } - else - { - Free(m_Sections[i]); - m_Sections[i] = 0; - } } } } |