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author | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2017-07-29 16:55:16 +0200 |
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committer | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2017-07-29 16:55:16 +0200 |
commit | f942405184c2d6067fb5303b58a225edf7e452b1 (patch) | |
tree | 83e70c7e3019e5b195c9caf41194b2113fa76d7f /old/world/Section.cpp | |
parent | 2017-07-26 (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | old/world/Section.cpp | 147 |
1 files changed, 147 insertions, 0 deletions
diff --git a/old/world/Section.cpp b/old/world/Section.cpp new file mode 100644 index 0000000..8b86afd --- /dev/null +++ b/old/world/Section.cpp @@ -0,0 +1,147 @@ +#include "Section.hpp" + + +Section::Section(Vector position, byte *dataBlocks, size_t dataBlocksLength, byte *dataLight, byte *dataSky, + byte bitsPerBlock, + std::vector<unsigned short> palette) { + worldPosition = position; + + m_dataBlocksLen = dataBlocksLength; + m_dataBlocks = new byte[m_dataBlocksLen]; + std::copy(dataBlocks, dataBlocks + m_dataBlocksLen, m_dataBlocks); + + m_dataLight = new byte[2048]; + std::copy(dataLight, dataLight + 2048, m_dataLight); + + if (dataSky) { + m_dataSkyLight = new byte[2048]; + std::copy(dataSky, dataSky + 2048, m_dataSkyLight); + } + + m_palette = palette; + m_bitsPerBlock = bitsPerBlock; +} + +Section::~Section() { + delete[] m_dataBlocks; + m_dataBlocksLen = 0; + m_dataBlocks = nullptr; + delete[] m_dataLight; + m_dataLight = nullptr; + delete[] m_dataSkyLight; + m_dataSkyLight = nullptr; +} + +Block &Section::GetBlock(Vector pos) { + return m_blocks[pos.GetY() * 256 + pos.GetZ() * 16 + pos.GetX()]; +} + +double totalParsingTime = 0; + +void Section::Parse() { + if (!m_blocks.empty()) + return; + + long long *longArray = reinterpret_cast<long long *>(m_dataBlocks); + for (size_t i = 0; i < m_dataBlocksLen / 8; i++) + endswap(&longArray[i]); + std::vector<unsigned short> blocks; + blocks.reserve(4096); + { + auto begin = std::chrono::steady_clock::now(); + int bitPos = 0; + unsigned short t = 0; + for (size_t i = 0; i < m_dataBlocksLen; i++) { + for (int j = 0; j < 8; j++) { + t |= (m_dataBlocks[i] & 0x01) ? 0x80 : 0x00; + t >>= 1; + m_dataBlocks[i] >>= 1; + bitPos++; + if (bitPos >= m_bitsPerBlock) { + bitPos = 0; + t >>= m_bitsPerBlock - 1; + blocks.push_back(t); + t = 0; + } + } + } + auto end = std::chrono::steady_clock::now(); + std::chrono::duration<double, std::milli> time = end - begin; + totalParsingTime += time.count(); + } + std::vector<byte> light; + light.reserve(4096); + for (int i = 0; i < 2048; i++) { + byte t = m_dataLight[i]; + byte first = t & 0b11110000; + byte second = t >> 4; + light.push_back(first); + light.push_back(second); + } + for (int i = 0; i < 4096; i++) { + unsigned short blockId = m_palette.size() > 0 ? m_palette[blocks[i]] : blocks[i]; + Block block(blockId >> 4, blockId & 0xF); + m_blocks.push_back(block); + } + delete[] m_dataBlocks; + m_dataBlocksLen = 0; + m_dataBlocks = nullptr; + delete[] m_dataLight; + m_dataLight = nullptr; + delete[] m_dataSkyLight; + m_dataSkyLight = nullptr; + + parseWaiter.notify_all(); +} + +Section &Section::operator=(Section other) { + std::swap(*this, other); + return *this; +} + +void swap(Section &a, Section &b) { + using std::swap; + swap(a.m_dataBlocksLen, b.m_dataBlocksLen); + swap(a.m_dataBlocks, b.m_dataBlocks); + swap(a.m_dataLight, b.m_dataLight); + swap(a.m_dataSkyLight, b.m_dataSkyLight); + swap(a.m_blocks, b.m_blocks); + swap(a.m_palette, b.m_palette); + swap(a.m_bitsPerBlock, b.m_bitsPerBlock); +} + +Section::Section(const Section &other) { + worldPosition = other.worldPosition; + m_dataBlocksLen = other.m_dataBlocksLen; + if (other.m_blocks.empty()) { + m_dataBlocks = new byte[m_dataBlocksLen]; + std::copy(other.m_dataBlocks, other.m_dataBlocks + m_dataBlocksLen, m_dataBlocks); + + m_dataLight = new byte[2048]; + std::copy(other.m_dataLight, other.m_dataLight + 2048, m_dataLight); + + if (other.m_dataSkyLight) { + m_dataSkyLight = new byte[2048]; + std::copy(other.m_dataSkyLight, other.m_dataSkyLight + 2048, m_dataSkyLight); + } + } else { + std::copy(other.m_blocks.begin(), other.m_blocks.end(), std::back_inserter(m_blocks)); + } + + m_palette = other.m_palette; + m_bitsPerBlock = other.m_bitsPerBlock; +} + +Vector Section::GetPosition() { + return worldPosition; +} + +size_t Section::GetHash() { + if (m_blocks.empty()) return 0; + + unsigned char *from = reinterpret_cast<unsigned char *>(m_blocks.data()); + size_t length = m_blocks.size() * sizeof(Block); + + std::string str(from, from + length); + return std::hash<std::string>{}(str); +}
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