Thanks Jakob,
That is excellent news. Thank you so much for implementing this so quickly.
I've just tried a r25274 build of sumo.exe and our interface based on an
equivalent version of Traci. Within a class derived from public TraCIAPI we
do the following to subscribe to vehicles:
{
auto routes = route.getIDList();
vehicle.add(mEgoId, routes[0], egoType);
}
const std::vector<int> varsTraffic{ VAR_POSITION3D, VAR_ANGLE,
VAR_COLOR, VAR_SPEED, VAR_TYPE, VAR_VEHICLECLASS, VAR_SHAPECLASS,
VAR_SIGNALS };
simulation.subscribeContext(CMD_SUBSCRIBE_VEHICLE_CONTEXT, mEgoId,
0, 999999999, CMD_GET_VEHICLE_VARIABLE, egoRadius, varsTraffic);
The final line causes the SUMO server to exit with:
Error: tcpip::Storage::readIsSafe: want to read 4 bytes from Storage, but
only 0 remaining
Quitting (on error).
As I say it looked to me like r24483 had extended the definition of the
subscription request packet, but the equivalent traci code hadn't been
extended.
Any thoughts?
Erik
--
Erik Newton
Model Integration Engineer
rFactor Pro
w: http://www.rfpro.com
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On 18 July 2017 at 15:30, Jakob Erdmann <namdre.s...@googlemail.com> wrote:
> Hello,
> person context subscriptions are fixed in revision [25252]. Thank you for
> pointing out the problem.
> Regarding the issue with r24483, I could not yet reproduce any exceptions.
> Can you please send a small sample scenario+script?
> regards,
> Jakob
>
> 2017-07-11 23:31 GMT+02:00 Erik Newton via sumo-devel <
> sumo-devel@lists.sourceforge.net>:
>
>> Hi Dev Team,
>> I've been trying to subscribe to pedestrians within a radius of my
>> injected
>> ego vehicle, but was always getting zero people.
>>
>> This works for subscribing to vehicles:
>> simulation.subscribeContext(CMD_SUBSCRIBE_VEHICLE_CONTEXT,
>> mEgoId,
>> 0, 999999999, CMD_GET_VEHICLE_VARIABLE, egoRadius, varsTraffic);
>>
>> But this does not work for pedestrians:
>> simulation.subscribeContext(CMD_SUBSCRIBE_VEHICLE_CONTEXT,
>> mEgoId,
>> 0, 999999999, CMD_GET_PERSON_VARIABLE, egoRadius, varsPeople);
>>
>> I'm getting a subscription message returned OK but always no pedestrians
>> despite running them over.
>>
>> I think I've traced the problem down to
>> TraCIServer.cpp collectObjectsInRange does not have a case statement
>> for CMD_GET_PERSON_VARIABLE. To implement it, do we then
>> need TraCIServerAPI_Person::getTree();
>>
>> I've not looked at how difficult that is to implement yet. Assuming I've
>> gone about this the correct way, does anyone have time to implement this
>> at
>> the moment please?
>>
>> Also traci appears to be broken in the current trunk r25176 due to r24483
>> adding code to initialiseSubscription. You get a safeRead exception. This
>> may be expected? so I went back to 0.30.
>>
>> Cheers,
>> Erik
>>
>>
>>
>> --
>> Erik Newton
>> Model Integration Engineer
>> rFactor Pro
>>
>> w: http://www.rfpro.com
>>
>> This e-mail and any files transmitted with it are private and
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>> registered in England No. 06427019.
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