Function tryLoadIndex

src/OpenLoco/src/Objects/ObjectIndex.cpp:497–541

    }

    static bool tryLoadIndex(const ObjectFoldersState& currentState)
    {
        Core::Timer loadTimer;

        const auto indexPath = Environment::getPathNoWarning(Environment::PathId::plugin1);
        if (!fs::exists(indexPath))
        {
            Logging::verbose("Object index does not exist.");
            return false;
        }
        FileStream stream;
        stream.open(indexPath, StreamMode::read);
        if (!stream.isOpen())
        {
            Logging::error("Unable to load the object index.");
            return false;
        }

        try
        {
            auto header = deserialiseHeader(stream);
            if (header.version != kCurrentIndexVersion || header.state != currentState)
            {
                return false;
            }
            else
            {
                _installedObjectList = deserialiseIndex(stream);
                if (_installedObjectList.empty())
                {
                    return false;
                }
                Logging::verbose("Loaded object index in {} milliseconds.", loadTimer.elapsed());
            }
        }
        catch (const std::runtime_error& ex)
        {
            Logging::error("Unable to load the object index: {}", ex.what());
            return false;
        }

        reloadAll();

        return true;
    }

    // 0x00470F3C
    void loadIndex()