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authorLaG1924 <12997935+LaG1924@users.noreply.github.com>2017-07-29 16:55:16 +0200
committerLaG1924 <12997935+LaG1924@users.noreply.github.com>2017-07-29 16:55:16 +0200
commitf942405184c2d6067fb5303b58a225edf7e452b1 (patch)
tree83e70c7e3019e5b195c9caf41194b2113fa76d7f /src/Section.cpp
parent2017-07-26 (diff)
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Diffstat (limited to '')
-rw-r--r--src/Section.cpp147
1 files changed, 147 insertions, 0 deletions
diff --git a/src/Section.cpp b/src/Section.cpp
new file mode 100644
index 0000000..8b86afd
--- /dev/null
+++ b/src/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);
+} \ No newline at end of file