Method Client_Handle_GAMESTATE

src/openrct2/network/NetworkBase.cpp:2546–2613

    }

    void NetworkBase::Client_Handle_GAMESTATE(Connection& connection, Packet& packet)
    {
        uint32_t tick;
        uint32_t totalSize;
        uint32_t offset;
        uint32_t dataSize;

        packet >> tick >> totalSize >> offset >> dataSize;

        if (offset == 0)
        {
            // Reset
            _serverGameState = MemoryStream();
        }

        _serverGameState.SetPosition(offset);

        const uint8_t* data = packet.read(dataSize);
        _serverGameState.Write(data, dataSize);

        LOG_VERBOSE(
            "Received Game State %.02f%%",
            (static_cast<float>(_serverGameState.GetLength()) / static_cast<float>(totalSize)) * 100.0f);

        if (_serverGameState.GetLength() == totalSize)
        {
            _serverGameState.SetPosition(0);
            DataSerialiser ds(false, _serverGameState);

            IGameStateSnapshots* snapshots = GetContext().GetGameStateSnapshots();

            GameStateSnapshot_t& serverSnapshot = snapshots->CreateSnapshot();
            snapshots->SerialiseSnapshot(serverSnapshot, ds);

            const GameStateSnapshot_t* desyncSnapshot = snapshots->GetLinkedSnapshot(tick);
            if (desyncSnapshot != nullptr)
            {
                GameStateCompareData cmpData = snapshots->Compare(serverSnapshot, *desyncSnapshot);

                std::string outputPath = GetContext().GetPlatformEnvironment().GetDirectoryPath(
                    DirBase::user, DirId::desyncLogs);

                Path::CreateDirectory(outputPath);

                char uniqueFileName[128] = {};
                snprintf(
                    uniqueFileName, sizeof(uniqueFileName), "desync_%llu_%u.txt",
                    static_cast<long long unsigned>(Platform::GetDatetimeNowUTC()), tick);

                std::string outputFile = Path::Combine(outputPath, uniqueFileName);

                if (snapshots->LogCompareDataToFile(outputFile, cmpData))
                {
                    LOG_INFO("Wrote desync report to '%s'", outputFile.c_str());

                    auto ft = Formatter();
                    ft.Add<char*>(uniqueFileName);