Method OpenLanguage

src/openrct2/localisation/LocalisationService.cpp:86–133

    }

    void LocalisationService::OpenLanguage(int32_t id)
    {
        CloseLanguages();
        if (id == LANGUAGE_UNDEFINED)
        {
            throw std::invalid_argument("id was undefined");
        }

        auto preferredLanguage = LanguagePackFactory::FromLanguageId(id);
        if (preferredLanguage != nullptr)
        {
            _currentLanguage = id;
            _languageOrder.emplace_back(id);
            _loadedLanguages.emplace_back(std::move(preferredLanguage));
            TryLoadFonts(*this);
        }
        else
        {
            throw std::runtime_error("Unable to open language " + std::to_string(id));
        }

        auto checkLanguage = LanguagesDescriptors[id].fallback;
        while (checkLanguage != LANGUAGE_UNDEFINED)
        {
            _languageOrder.emplace_back(checkLanguage);
            auto fallbackLanguagePack = LanguagePackFactory::FromLanguageId(checkLanguage);
            if (fallbackLanguagePack != nullptr)
            {
                _loadedLanguages.emplace_back(std::move(fallbackLanguagePack));
            }

            checkLanguage = LanguagesDescriptors[checkLanguage].fallback;
        }

        if (id != LANGUAGE_ENGLISH_UK)
        {
            _languageOrder.emplace_back(LANGUAGE_ENGLISH_UK);
            auto englishLanguagePack = LanguagePackFactory::FromLanguageId(LANGUAGE_ENGLISH_UK);
            if (englishLanguagePack != nullptr)
            {
                _loadedLanguages.emplace_back(std::move(englishLanguagePack));
            }
            else
            {
                throw std::runtime_error("Unable to open the English language file!");
            }
        }
    }

    void LocalisationService::CloseLanguages()
    {