void world_speak_npcs(void *world_void)
{
    World *world = static_cast<World *>(world_void);

    UTIL_FOREACH(world->maps, map)
    {
        UTIL_FOREACH(map->npcs, npc)
        {
            double timeinterval = util::to_float(world->npcs_config[util::to_string(npc->id) + ".interval"]);
            double current_time = Timer::GetTime();

            if (timeinterval > 0 && (current_time - npc->last_chat) >= timeinterval)
            {
                std::vector<std::string> chats;

                for (int i = 1; std::string(world->npcs_config[util::to_string(npc->id) + ".chat" + util::to_string(i)]) != "0"; i++)
                    chats.push_back(world->npcs_config[util::to_string(npc->id) + ".chat" + util::to_string(i)]);

                if (util::rand(0, 100) <= (util::to_int(world->npcs_config[util::to_string(npc->id) + ".frequency"])) && chats.size() > 0)
                {
                    npc->ShowDialog(chats.at(util::rand(0, chats.size() - 1)));
                    npc->last_chat = current_time;
                }
                else
                {
                    npc->last_chat = current_time;
                }
            }
        }
    }
}