menu_from_json.cpp

[[nodiscard]] static quake::menu makeMenuFromJSON(const json& src)
{
    quake::menu m{"Custom Test Menu", &M_Menu_QuakeVRSettings_f};

    for(const auto& [key, value] : src.items())
    {
        const char* title = key.data();
        const auto& bounds = value["bounds"];

        const auto generateOption = [&]<typename T>(
                                        const quake::menu_bounds<T> bounds) {
            cvar_t* const cvar = Cvar_FindVar(title);
            m.add_cvar_entry<T>(title, *cvar, bounds);
        };

        const auto extractBounds = [&]<typename T>() -> quake::menu_bounds<T> {
            return {bounds[0], bounds[1], bounds[2]};
        };

        if(value["type"] == "float")
        {
            generateOption(extractBounds.operator()<float>());
        }
        else if(value["type"] == "int")
        {
            generateOption(extractBounds.operator()<int>());
        }
        else if(value["type"] == "bool")
        {
            generateOption(quake::menu_bounds<bool>{});
        }
    }

    return m;
}