1 files changed, 159 insertions, 0 deletions

diff --git a/code/Game.cpp b/code/Game.cpp
new file mode 100644
index 0000000..db38977
--- /dev/null
+++ b/code/Game.cpp
@@ -0,0 +1,159 @@
+#include "Game.hpp"
+#include "PacketParser.hpp"
+#include "PacketBuilder.hpp"
+#include "json.hpp"
+
+Game::Game() {
+    m_display = new Display(1280, 720, "AltCraft", &m_world);
+    m_nc = new NetworkClient("127.0.0.1", 25565, "HelloOne");
+    Packet &response = *m_nc->GetPacket();
+    if (response.GetId() != 0x02) {
+        std::cout << response.GetId() << std::endl;
+        throw 127;
+    }
+    PacketParser::Parse(response, Login);
+    g_PlayerUuid = response.GetField(0).GetString();
+    g_PlayerName = response.GetField(1).GetString();
+    delete &response;
+    m_networkState = ConnectionState::Play;
+    std::cout << g_PlayerName << "'s UUID is " << g_PlayerUuid << std::endl;
+}
+
+Game::~Game() {
+    std::cout << "Stopping game thread..." << std::endl;
+    m_exit=true;
+    m_gameThread.join();
+    std::cout << "Stopping graphics..." << std::endl;
+    delete m_display;
+    std::cout << "Stopping network..." << std::endl;
+    delete m_nc;
+}
+
+void Game::MainLoop() {
+    while (!m_exit) {
+        ParsePackets();
+        if (m_display->IsClosed())
+            m_exit = true;
+    }
+}
+
+void Game::ParsePackets() {
+    Packet *packetPtr = m_nc->GetPacket();
+    if (!packetPtr) {
+        using namespace std::chrono_literals;
+        std::this_thread::sleep_for(16ms);
+        return;
+    }
+    Packet packet = *packetPtr;
+    delete packetPtr;
+    PacketParser::Parse(packet);
+    nlohmann::json json;
+
+    switch (packet.GetId()) {
+        case 0x23:
+            g_PlayerEid = packet.GetField(0).GetInt();
+            g_Gamemode = (packet.GetField(1).GetUByte() & 0b11111011);
+            g_Dimension = packet.GetField(2).GetInt();
+            g_Difficulty = packet.GetField(3).GetUByte();
+            g_MaxPlayers = packet.GetField(4).GetUByte();
+            g_LevelType = packet.GetField(5).GetString();
+            g_ReducedDebugInfo = packet.GetField(6).GetBool();
+            std::cout << "Gamemode is " << (int) g_Gamemode << ", Difficulty is " << (int) g_Difficulty
+                      << ", Level Type is " << g_LevelType << std::endl;
+            break;
+        case 0x0D:
+            g_Difficulty = packet.GetField(0).GetUByte();
+            std::cout << "Difficulty now is " << (int) g_Difficulty << std::endl;
+            break;
+        case 0x43:
+            g_SpawnPosition = packet.GetField(0).GetPosition();
+            std::cout << "Spawn position is " << g_SpawnPosition.GetX() << "," << g_SpawnPosition.GetY() << ","
+                      << g_SpawnPosition.GetZ() << std::endl;
+            break;
+        case 0x2B:
+            g_PlayerInvulnerable = (packet.GetField(0).GetByte() & 0x01) != 0;
+            g_PlayerFlying = (packet.GetField(0).GetByte() & 0x02) != 0;
+            g_PlayerAllowFlying = (packet.GetField(0).GetByte() & 0x04) != 0;
+            g_PlayerCreativeMode = (packet.GetField(0).GetByte() & 0x08) != 0;
+            g_PlayerFlyingSpeed = packet.GetField(1).GetFloat();
+            g_PlayerFovModifier = packet.GetField(2).GetFloat();
+            std::cout << "Fov modifier is " << g_PlayerFovModifier << std::endl;
+            break;
+        case 0x2E:
+            if ((packet.GetField(5).GetByte() & 0x10) != 0) {
+                g_PlayerPitch += packet.GetField(4).GetFloat();
+            } else {
+                g_PlayerPitch = packet.GetField(4).GetFloat();
+            };
+
+            if ((packet.GetField(5).GetByte() & 0x08) != 0) {
+                g_PlayerYaw += packet.GetField(3).GetFloat();
+            } else {
+                g_PlayerYaw = packet.GetField(3).GetFloat();
+            }
+
+            if ((packet.GetField(5).GetByte() & 0x01) != 0) {
+                g_PlayerX += packet.GetField(0).GetDouble();
+            } else {
+                g_PlayerX = packet.GetField(0).GetDouble();
+            }
+
+            if ((packet.GetField(5).GetByte() & 0x02) != 0) {
+                g_PlayerY += packet.GetField(1).GetDouble();
+            } else {
+                g_PlayerY = packet.GetField(1).GetDouble();
+            }
+
+            if ((packet.GetField(5).GetByte() & 0x04) != 0) {
+                g_PlayerZ += packet.GetField(2).GetDouble();
+            } else {
+                g_PlayerZ = packet.GetField(2).GetDouble();
+            }
+
+            g_IsGameStarted = true;
+            m_nc->AddPacketToQueue(PacketBuilder::CPlay0x03(0));
+            m_nc->AddPacketToQueue(PacketBuilder::CPlay0x00(packet.GetField(6).GetVarInt()));
+            std::cout << "Game is started! " << std::endl;
+            std::cout << "PlayerPos is " << g_PlayerX << "," << g_PlayerY << "," << g_PlayerZ << "\tAngle: " << g_PlayerYaw
+                      << "," << g_PlayerPitch << std::endl;
+            m_display->SetPlayerPos(g_PlayerX, g_PlayerY,g_PlayerZ);
+            gameStartWaiter.notify_all();
+            break;
+        case 0x1A:
+            json = nlohmann::json::parse(packet.GetField(0).GetString());
+            std::cout << "Disconnect reason: " << json["text"].get<std::string>() << std::endl;
+            throw 119;
+            break;
+        case 0x20:
+            m_world.ParseChunkData(packet);
+            break;
+        case 0x07:
+            std::cout << "Statistics:" << std::endl;
+            //int items = packet.GetField(0).GetVarInt();
+            for (int i = 0; i < packet.GetField(0).GetVarInt(); i++) {
+                std::cout << "\t" << packet.GetField(1).GetArray()[0].GetString() << ": "
+                          << packet.GetField(1).GetArray()[1].GetVarInt() << std::endl;
+            }
+            break;
+        default:
+            //std::cout << std::hex << packet.GetId() << std::dec << std::endl;
+            break;
+    }
+    if (g_IsGameStarted) {
+        std::chrono::steady_clock clock;
+        static auto timeOfPreviousSendedPpalPacket(clock.now());
+        std::chrono::duration<double, std::milli> delta = clock.now() - timeOfPreviousSendedPpalPacket;
+        if (delta.count() >= 50) {
+            m_nc->AddPacketToQueue(
+                    PacketBuilder::CPlay0x0D(g_PlayerX, g_PlayerY, g_PlayerZ, g_PlayerYaw, g_PlayerPitch, true));
+            timeOfPreviousSendedPpalPacket = clock.now();
+            /*std::cout << "PlayerPos is " << g_PlayerX << "," << g_PlayerY << "," << g_PlayerZ << " " << g_PlayerYaw
+                      << "," << g_PlayerPitch << std::endl;*/
+        }
+    }
+}
+
+void Game::Exec() {
+    m_gameThread = std::thread(&Game::MainLoop, this);
+    m_display->MainLoop();
+}