397 lines
7.4 KiB
C++
397 lines
7.4 KiB
C++
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#include "Globals.h"
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#include "ChunkData.h"
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cChunkData cChunkData::Copy() const
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{
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cChunkData copy;
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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if (m_Sections[i] != NULL)
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{
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copy.m_Sections[i] = Allocate();
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*copy.m_Sections[i] = *m_Sections[i];
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}
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}
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return copy;
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}
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void cChunkData::CopyBlocks (BLOCKTYPE * a_dest, size_t a_Idx, size_t length) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16;
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if (a_Idx > 0)
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{
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a_Idx = std::max(a_Idx - length, (size_t) 0);
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}
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if (a_Idx == 0)
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{
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size_t tocopy = std::min(segment_length, length);
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length -= tocopy;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_dest[i * segment_length],
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&m_Sections[i]->m_BlockTypes,
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sizeof(BLOCKTYPE) * tocopy
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);
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}
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else
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{
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memset(
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&a_dest[i * segment_length],
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0,
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sizeof(BLOCKTYPE) * tocopy
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);
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}
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}
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}
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}
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void cChunkData::CopyMeta(NIBBLETYPE * a_dest) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_dest[i * segment_length],
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&m_Sections[i]->m_BlockMeta,
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sizeof(NIBBLETYPE) * segment_length
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);
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}
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else
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{
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memset(
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&a_dest[i * segment_length],
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0,
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sizeof(BLOCKTYPE) * segment_length
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);
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}
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}
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}
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void cChunkData::CopyBlockLight(NIBBLETYPE * a_dest) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_dest[i * segment_length],
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&m_Sections[i]->m_BlockLight,
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sizeof(NIBBLETYPE) * segment_length
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);
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}
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else
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{
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memset(
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&a_dest[i * segment_length],
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0,
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sizeof(BLOCKTYPE) * segment_length
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);
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}
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}
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}
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void cChunkData::CopySkyLight(NIBBLETYPE * a_dest) const
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&a_dest[i * segment_length],
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&m_Sections[i]->m_BlockSkyLight,
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sizeof(NIBBLETYPE) * segment_length
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);
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}
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else
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{
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memset(
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&a_dest[i * segment_length],
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0xFF,
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sizeof(BLOCKTYPE) * segment_length
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);
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}
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}
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}
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void cChunkData::SetBlocks(const BLOCKTYPE * a_src)
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&m_Sections[i]->m_BlockTypes,
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&a_src[i * segment_length],
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sizeof(BLOCKTYPE) * segment_length
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);
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}
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else
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{
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// j counts how many of leading zeros the buffer has
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// if j == segment_length then the buffer is all zeros so there is no point
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// creating the buffer.
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size_t j = 0;
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// do nothing whilst 0
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for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
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if (j != segment_length)
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{
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m_Sections[i] = Allocate();
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memcpy(
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&m_Sections[i]->m_BlockTypes,
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&a_src[i * segment_length],
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sizeof(BLOCKTYPE) * segment_length
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);
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memset(
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m_Sections[i]->m_BlockMeta,
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0x00,
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sizeof(m_Sections[i]->m_BlockMeta)
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);
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memset(
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m_Sections[i]->m_BlockLight,
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0x00,
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sizeof(m_Sections[i]->m_BlockLight)
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);
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memset(
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m_Sections[i]->m_BlockSkyLight,
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0xFF,
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sizeof(m_Sections[i]->m_BlockSkyLight)
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);
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}
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}
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}
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}
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void cChunkData::SetMeta(const NIBBLETYPE * a_src)
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{
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&m_Sections[i]->m_BlockMeta,
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&a_src[i * segment_length],
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sizeof(NIBBLETYPE) * segment_length
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);
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}
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else
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{
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// j counts how many of leading zeros the buffer has
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// if j == segment_length then the buffer is all zeros so there is no point
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// creating the buffer.
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size_t j = 0;
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// do nothing whilst 0
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for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
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if (j != segment_length)
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{
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m_Sections[i] = Allocate();
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memcpy(
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&m_Sections[i]->m_BlockMeta,
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&a_src[i * segment_length],
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sizeof(BLOCKTYPE) * segment_length
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);
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memset(
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m_Sections[i]->m_BlockTypes,
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0x00,
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sizeof(m_Sections[i]->m_BlockTypes)
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);
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memset(
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m_Sections[i]->m_BlockLight,
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0x00,
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sizeof(m_Sections[i]->m_BlockLight)
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);
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memset(
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m_Sections[i]->m_BlockSkyLight,
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0xFF,
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sizeof(m_Sections[i]->m_BlockSkyLight)
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);
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}
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}
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}
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}
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void cChunkData::SetBlockLight(const NIBBLETYPE * a_src)
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{
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if (!a_src) return;
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&m_Sections[i]->m_BlockLight,
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&a_src[i * segment_length],
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sizeof(NIBBLETYPE) * segment_length
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);
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}
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else
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{
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// j counts how many of leading zeros the buffer has
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// if j == segment_length then the buffer is all zeros so there is no point
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// creating the buffer.
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size_t j = 0;
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// do nothing whilst 0
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for (; j < segment_length && a_src[i * segment_length + j] == 0; j++);
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if (j != segment_length)
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{
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m_Sections[i] = Allocate();
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memcpy(
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&m_Sections[i]->m_BlockLight,
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&a_src[i * segment_length],
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sizeof(BLOCKTYPE) * segment_length
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);
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memset(
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m_Sections[i]->m_BlockTypes,
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0x00,
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sizeof(m_Sections[i]->m_BlockTypes)
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);
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memset(
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m_Sections[i]->m_BlockMeta,
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0x00,
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sizeof(m_Sections[i]->m_BlockMeta)
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);
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memset(
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m_Sections[i]->m_BlockSkyLight,
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0xFF,
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sizeof(m_Sections[i]->m_BlockSkyLight)
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);
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}
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}
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}
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}
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void cChunkData::SetSkyLight (const NIBBLETYPE * a_src)
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{
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if (!a_src) return;
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for (size_t i = 0; i < CHUNK_SECTION_COUNT; i++)
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{
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const size_t segment_length = CHUNK_SECTION_HEIGHT * 16 * 16 / 2;
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if (m_Sections[i] != NULL)
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{
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memcpy(
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&m_Sections[i]->m_BlockSkyLight,
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&a_src[i * segment_length],
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sizeof(NIBBLETYPE) * segment_length
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);
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}
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else
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{
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// j counts how many of leading zeros the buffer has
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// if j == segment_length then the buffer is all zeros so there is no point
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// creating the buffer.
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size_t j = 0;
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// do nothing whilst 0
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for (; j < segment_length && a_src[i * segment_length + j] == 0xFF; j++);
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if (j != segment_length)
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{
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m_Sections[i] = Allocate();
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memcpy(
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&m_Sections[i]->m_BlockSkyLight,
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&a_src[i * segment_length],
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sizeof(BLOCKTYPE) * segment_length
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);
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memset(
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m_Sections[i]->m_BlockTypes,
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0x00,
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sizeof(m_Sections[i]->m_BlockTypes)
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);
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memset(
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m_Sections[i]->m_BlockMeta,
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0x00,
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sizeof(m_Sections[i]->m_BlockMeta)
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);
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memset(
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m_Sections[i]->m_BlockLight,
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0x00,
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sizeof(m_Sections[i]->m_BlockLight)
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);
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}
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}
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}
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}
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cChunkData::sChunkSection * cChunkData::Allocate() const
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{
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// TODO: use a allocation pool
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return new cChunkData::sChunkSection;
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}
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void cChunkData::Free(cChunkData::sChunkSection * ptr) const
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{
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delete ptr;
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}
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void cChunkData::ZeroSection(cChunkData::sChunkSection * ptr) const
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{
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memset(
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ptr->m_BlockTypes,
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0x00,
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sizeof(ptr->m_BlockTypes)
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);
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memset(
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ptr->m_BlockMeta,
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0x00,
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sizeof(ptr->m_BlockMeta)
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);
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memset(
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ptr->m_BlockLight,
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0x00,
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sizeof(ptr->m_BlockLight)
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);
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memset(
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ptr->m_BlockSkyLight,
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0xFF,
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sizeof(ptr->m_BlockSkyLight)
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);
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}
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