From 1563ae5be6bc130a9b3a23464f7e28fdb1e87da3 Mon Sep 17 00:00:00 2001
From: LaG1924 <12997935+LaG1924@users.noreply.github.com>
Date: Sat, 13 May 2017 19:01:56 +0500
Subject: 2017-05-13

---
 code/World.cpp | 107 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 107 insertions(+)
 create mode 100644 code/World.cpp

(limited to 'code/World.cpp')

diff --git a/code/World.cpp b/code/World.cpp
new file mode 100644
index 0000000..c19f88c
--- /dev/null
+++ b/code/World.cpp
@@ -0,0 +1,107 @@
+#include <iostream>
+#include <bitset>
+#include "World.hpp"
+
+void World::ParseChunkData(Packet packet) {
+    int chunkX = packet.GetField(0).GetInt();
+    int chunkZ = packet.GetField(1).GetInt();
+    bool isGroundContinuous = packet.GetField(2).GetBool();
+    std::bitset<16> bitmask(packet.GetField(3).GetVarInt());
+    int entities = packet.GetField(5).GetVarInt();
+
+    size_t dataLen = packet.GetField(5).GetLength();
+    byte *content = new byte[dataLen];
+    byte *contentOrigPtr = content;
+    packet.GetField(5).CopyToBuff(content);
+
+    if (isGroundContinuous)
+        dataLen -= 256;
+
+    byte *biomes = content + packet.GetField(5).GetLength() - 256;
+    for (int i = 0; i < 16; i++) {
+        if (bitmask[i]) {
+            size_t len = 0;
+            m_sections[PositionI(chunkX, chunkZ, i)] = ParseSection(content, len);
+            m_sectionToParse.push(m_sections.find(PositionI(chunkX, chunkZ, i)));
+            m_parseSectionWaiter.notify_one();
+            content += len;
+        }
+    }
+    delete[] contentOrigPtr;
+}
+
+Section World::ParseSection(byte *data, size_t &dataLen) {
+    dataLen = 0;
+
+    Field fBitsPerBlock = FieldParser::Parse(UnsignedByte, data);
+    byte bitsPerBlock = fBitsPerBlock.GetUByte();
+    data += fBitsPerBlock.GetLength();
+    dataLen += fBitsPerBlock.GetLength();
+
+    Field fPaletteLength = FieldParser::Parse(VarInt, data);
+    int paletteLength = fPaletteLength.GetVarInt();
+    data += fPaletteLength.GetLength();
+    dataLen += fPaletteLength.GetLength();
+
+    std::vector<unsigned short> palette;
+    if (paletteLength > 0) {
+        for (unsigned char i = 0; i < paletteLength; i++) {
+            endswap(&i);
+            Field f = FieldParser::Parse(VarInt, data);
+            data += f.GetLength();
+            dataLen += f.GetLength();
+            palette.push_back(f.GetVarInt());
+            endswap(&i);
+        }
+    }
+
+    Field fDataLength = FieldParser::Parse(VarInt, data);
+    data += fDataLength.GetLength();
+    dataLen += fDataLength.GetLength();
+
+    int dataLength = fDataLength.GetVarInt();
+    size_t dataSize = dataLength * 8;
+    dataLen += dataSize;
+    byte *dataBlocks = data;
+
+    data += 2048;
+    dataLen += 2048;
+    byte *dataLight = data;
+
+    byte *dataSky = nullptr;
+    if (m_dimension == 0) {
+        data += 2048;
+        dataLen += 2048;
+        dataSky = data;
+    }
+
+    return Section(dataBlocks, dataSize, dataLight, dataSky, bitsPerBlock, palette);
+}
+
+World::~World() {
+    isContinue = false;
+    m_parseSectionWaiter.notify_all();
+    m_sectionParseThread.join();
+}
+
+void World::SectionParsingThread() {
+    while (isContinue) {
+        std::unique_lock<std::mutex> sectionParseLocker(m_parseSectionMutex);
+        m_parseSectionWaiter.wait(sectionParseLocker);
+        while (m_sectionToParse.size() == 0 && isContinue) {
+            m_parseSectionWaiter.wait(sectionParseLocker);
+        }
+        while (m_sectionToParse.size() > 0) {
+            auto it = m_sectionToParse.front();
+            m_sectionToParse.pop();
+            it->second.Parse();
+            /*std::cout << "Parsed chunk" << it->first.GetX() << "x" << it->first.GetY() << "x" << it->first.GetZ()
+                      << std::endl;*/
+        }
+    }
+}
+
+World::World() {
+    m_sectionParseThread = std::thread(&World::SectionParsingThread, this);
+}
+
-- 
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