Function tryLoadIndex

src/OpenLoco/src/Scenario/ScenarioManager.cpp:166–213

0x00444611

    // 0x00444611
    static bool tryLoadIndex(const ScenarioFolderState& currentState)
    {
        const auto scorePath = Environment::getPath(Environment::PathId::scores);
        if (!fs::exists(scorePath))
        {
            return false;
        }
        std::ifstream stream;
        stream.open(scorePath, std::ios::in | std::ios::binary);
        if (!stream.is_open())
        {
            return false;
        }
        // 0x00112A14C -> 160
        _scenarioHeader = ScoreHeader{};
        Utility::readData(stream, _scenarioHeader);
        if (stream.gcount() != sizeof(ScoreHeader))
        {
            return false;
        }

        const auto scenarioListSize = _scenarioHeader.numScenarios * sizeof(ScenarioIndexEntry);
        _scenarioList.clear();
        _scenarioList.resize(_scenarioHeader.numScenarios);
        if (_scenarioList.empty())
        {
            exitWithError(StringIds::unable_to_allocate_enough_memory, StringIds::game_init_failure);
            return false;
        }
        Utility::readData(stream, _scenarioList.data(), _scenarioHeader.numScenarios);
        if (stream.gcount() != static_cast<int32_t>(scenarioListSize))
        {
            _scenarioHeader = ScoreHeader{};
            _scenarioList.clear();
            return false;
        }
        if (currentState != _scenarioHeader.state)
        {
            return false;
        }
        // version?
        if ((_scenarioHeader.state.numFiles >> 24) != 1)
        {
            return false;
        }

        return true;
    }

    static bool loadScenarioDetails(ScenarioIndexEntry& entry, Scenario::Options& options)
    {