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Re: [sumo-user] Class for person in Omnet++
Awesome, I got it
Instead of a Person class for pedestrians, all I need to do is just write new functions for TraCICommandInterface. 
std::list<std::string> TraCICommandInterface::getPersonIds()
{
    return genericGetStringList(CMD_GET_PERSON_VARIABLE, "", ID_LIST, RESPONSE_GET_PERSON_VARIABLE);
}
Coord TraCICommandInterface::getPersonPosition(std::string personId)
{
    return genericGetCoord(CMD_GET_PERSON_VARIABLE, personId, VAR_POSITION, RESPONSE_GET_PERSON_VARIABLE);
}
==========
The first one would return all people. The second one will get the coordination of an arbitrary individual.
Thank you very much. It helps me a lot


On Sat, Apr 23, 2022 at 7:40 AM Thanhnt Nguyen <thanhnt.fit@xxxxxxxxx> wrote:
Thank you, Dominik S.Buse
I run the veins_inet_pedestrians example and it works. It gives me some ideas for declaring a "person" class.
However, I could not establish C++ class for VeinsInetPerson. My steps include:
1. In VeinsInetPerson.ned, I write:  @class(veins::VeinsInetPerson);
2. I declare a C++ class named VeinsInetPerson
3. Declare a .h file in which the namespace of the class is veins, and this class uses namespace omnetpp
4. In .cc file, implement the code. 
And as running as Omnet++ simulation, the IDE reports error: cannot convert 'veins::VeinsInetPerson*' to 'omnetpp::cObject*' in initialization
I search the Internet for the error  to "'omnetpp::cObject*' in initialization" but I found nothing :(
Any help will be appreciated. Thank you in advance

PS: I attached three files NED, .CC and .H


On Fri, Apr 22, 2022 at 4:25 PM Dominik S. Buse <buse@xxxxxxxxxxxx> wrote:

Hi,

you may also want to take a look at this pull request to veins: https://github.com/sommer/veins/pull/148

It included subscription support for pedestrians. It seemed to have worked, yet was to complex to get merged into Veins. But you may be able to gain some ideas or salvage some code.


On 22.04.22 10:05, Jakob Erdmann wrote:
You'll have to patch TraCICommandInterface to add this method. The code is easily adaptable from other entities that provide a position (i.e. Poi)
On the implementation side, it should look like this:

Coord TraCICommandInterface::Person::getPosition()
{
return traci->genericGetCoord(CMD_GET_PERSON_VARIABLE, personId, VAR_POSITION, RESPONSE_GET_PERSON_VARIABLE);
}

Adding a pull-request against https://github.com/sommer/veins may help out future Veins users.

Am Fr., 22. Apr. 2022 um 09:50 Uhr schrieb Thanhnt Nguyen <thanhnt.fit@xxxxxxxxx>:
Thank you.
I suppose "traci" is an attribute of DemoBaseApplLayer class. In this class "traci" is an instance of TraCICommandInterface.
However the TraCICommandInterface class has no attribute named "person"
How could I access it?


On Fri, Apr 22, 2022 at 9:26 AM Jakob Erdmann <namdre.sumo@xxxxxxxxx> wrote:
The default way to write position information is with --fcd-output.
If you need the information at runtime, you can call traci.person.getPosition(personID) 
The list of all person ids can be obtained with traci.person.getIDList() (This includes all persons generated by a personFlow)

Am Fr., 22. Apr. 2022 um 09:20 Uhr schrieb Thanhnt Nguyen <thanhnt.fit@xxxxxxxxx>:
I found a quick hack to get coordinates of all pedestrians in personFlow.
In the source code of SUMO, edit the file: GUIEdge.cpp. More specifically, find the statement:
person->drawGL(s);
and then write a new line: std::cout<<person->getPosition()<<std::endl;
It works, the position will be printed as sumo-gui runs alone.
However, a new problem arises: My project needs positions to be available while the simulation is running. But the data of position is not printed as choosing "Run as Omnet++ simulation". The simulation should end and a user should close the Qtenv, the data would be available in the terminal. I tried other ways (such as writing a file) but it doesn't change: data only is printed after a user closes Qtenv.
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--
Nguyen Tien Thanh
Department of Software Engineering
School of Information and Communication Technology (SoICT, http://www.fit.hut.edu.vn)
Hanoi University of Technology (HUT, http://www.hut.edu.vn)
1 DaiCoViet Road, Hanoi, Vietnam
Tel: +84-4-8682595/8683730 Fax +84-4-8692906
Mobile: +84987768886
           ntthanh@xxxxxxxxxxxxx
           thanhnt.fit@xxxxxxxxx
Website: www.fit.hut.edu.vn/~thanhnt
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-- 
Dominik S. Buse M.Sc.
PhD Candidate at Data Communications and Networking Group (TKN), TU Berlin, Germany
Researcher at Software Innovation Campus Paderborn, Paderborn University, Germany
http://www.tkn.tu-berlin.de/team/buse/
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--
Nguyen Tien Thanh
Department of Software Engineering
School of Information and Communication Technology (SoICT, http://www.fit.hut.edu.vn)
Hanoi University of Technology (HUT, http://www.hut.edu.vn)
1 DaiCoViet Road, Hanoi, Vietnam
Tel: +84-4-8682595/8683730 Fax +84-4-8692906
Mobile: +84987768886
           ntthanh@xxxxxxxxxxxxx
           thanhnt.fit@xxxxxxxxx
Website: www.fit.hut.edu.vn/~thanhnt


--
Nguyen Tien Thanh
Department of Software Engineering
School of Information and Communication Technology (SoICT, http://www.fit.hut.edu.vn)
Hanoi University of Technology (HUT, http://www.hut.edu.vn)
1 DaiCoViet Road, Hanoi, Vietnam
Tel: +84-4-8682595/8683730 Fax +84-4-8692906
Mobile: +84987768886
E-mail: thanhnt@xxxxxxxxxxxxxxxx  
           ntthanh@xxxxxxxxxxxxx
           thanhnt.fit@xxxxxxxxx
Website: www.fit.hut.edu.vn/~thanhnt

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