Re: [simspark-devel] Countdown for Atlanta

[Joschka B. <jbo...@un...>]

Hi Jan and all,

first of all, I also could apply Yuan's patch without any problems 
(great work, Yuan!). I face similar problems and I will write in more 
detail tomorrow, for now I just wanted to give the fix for the failed 
assertion below.
>> (SimulationServer) entering runloop
>> lt-monitorspark: /usr/include/boost/shared_ptr.hpp:253: T* boost::shared_ptr<T>::operator->() const [with T = oxygen::SimControlNode]: Assertion `px != 0' failed.
>> Abgebrochen
>>     
>
> monitorspark always exits with this message. The internal rendering
> seems to work, though. But with 6 local agents connected it doesn't
> react to mouse and keyboard any more. :-(
>
> Any ideas about why the assertion fails?
>   

In lib/oxygen/simulationserver/simulationserver.cpp, in Method Run, 
there is a test missing to see whether the shared pointer to the 
AgentControlNode is non-zero. So instead of

shared_ptr<SimControlNode> agentCtrNode = GetControlNode("AgentControl");
agentCtrNode->Run();

insert a quick check and you should be fine (monitorspark uses the 
simulationserver, but has no agentcontrol node...)

shared_ptr<SimControlNode> agentCtrNode = GetControlNode("AgentControl");

if (agentCtrNode.get())
        agentCtrNode->Run();

Cheers,
Joschka