Hi Erik,
I couldn’t reproduce the ‘readIsSafe’-error. Attached you find my try using
your code. However it seems to work fine (on my Ubuntu machine). Maybe you can
provide more details on the crash / modify my code so it crashes?
Best regards,
Leo
Von: erik.new...@rfactor-pro.com [mailto:erik.new...@rfactor-pro.com] Im
Auftrag von Erik Newton
Gesendet: Donnerstag, 20. Juli 2017 15:15
An: Jakob Erdmann
Cc: sumo-devel@lists.sourceforge.net; Lücken, Leonhard
Betreff: Re: [sumo-devel] TraCI Subscribe to people in vehicle context
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<http://www.rfpro.com/>
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On 18 July 2017 at 15:30, Jakob Erdmann
<namdre.s...@googlemail.com<mailto: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<mailto: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
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If you have received this email in error please notify the sender
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#include <iostream>
#include <string>
#include <cstdlib>
#include <vector>
#include "utils/traci/TraCIAPI.h"
#include <traci-server/TraCIConstants.h>
#include <traci-server/TraCIDefs.h>
int main(int argc, char* argv[]) {
TraCIAPI traci;
traci.connect("localhost", 54321);
std::vector<std::string> routes = traci.route.getIDList();
std::string mEgoId = "egogo";
double egoRadius = 20.;
traci.vehicle.add(mEgoId, routes[0]);
const std::vector<int> varsTraffic{ VAR_POSITION3D, VAR_ANGLE, VAR_COLOR,
VAR_SPEED, VAR_TYPE, VAR_VEHICLECLASS, VAR_SHAPECLASS, VAR_SIGNALS };
traci.simulation.subscribeContext(CMD_SUBSCRIBE_VEHICLE_CONTEXT, mEgoId, 0,
999999999, CMD_GET_VEHICLE_VARIABLE, egoRadius, varsTraffic);
traci.simulationStep(10000);
traci.simulationStep(20000);
traci.simulationStep(30000);
traci.simulationStep(40000);
traci.close();
std::cout << "Done!" << std::endl;
}
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