Method Update

library/Core.cpp:1619–1655

should always be from simulation thread!

// should always be from simulation thread!
int Core::Update()
{
    if (shutdown)
    {
        // release the suspender
        MainThread::suspend().unlock();
        return -1;
    }

    if(errorstate)
        return -1;

    color_ostream_proxy out(con);

    // Pretend this thread has suspended the core in the usual way,
    // and run various processing hooks.
    {
        if(!started)
        {
            // Initialize the core
            InitSimulationThread();
            if(errorstate)
                return -1;
        }

        uint32_t start_ms = p->getTickCount();
        unpaused_ms += perf_counters.registerTick(start_ms);
        doUpdate(out);
        perf_counters.incCounter(perf_counters.total_update_ms, start_ms);
    }

    // Let all commands run that require CoreSuspender
    CoreWakeup.wait(MainThread::suspend(),
            [this]() -> bool {return this->toolCount.load() == 0;});

    return 0;
};

extern bool buildings_do_onupdate;
void buildings_onStateChange(color_ostream &out, state_change_event event);