Thread: RE: [Java-player-users] Position and Laser interfaces conflict?

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Hi...
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I made the changes suggested but i still have the same problem when the =
laserinterface line is uncommented... The robot moves but the position =
printed from the System.out.println doesn't change.
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I'm just using the simple.world that comes originally with stage.
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Any other suggestion?
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import javaclient.*;

public class Hugo {
    public static void main(String[] args) {
        String hostToConnect =3D args[0];
        int portToConnect    =3D Integer.parseInt(args[1]);

        System.out.println(" Host: "+hostToConnect+"  Port: =
"+portToConnect);
        PlayerClient         robot =3D new =
PlayerClient(hostToConnect,portToConnect);
        PositionInterface ppd   =3D robot.requestInterfacePosition(0, =
'a');

 //       LaserInterface    lpd   =3D robot.requestInterfaceLaser(0, =
'a');
        robot.runThreaded(-1, -1);
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        for(int i =3D 0; ; i++) {  =20
            robot.readAll();      =20

           for(int j =3D 0; j < 100000000; j++){}   =20

           ppd.setSpeed(100, 0);
           System.out.println(ppd.getX() +  " " + ppd.getY());
     }
  }
}

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----------------------------------------------------
Hugo Gravato Marques, University of Essex, PhD Student
PHONE: +44 (0)7854917241, England or +351 962482416, Portugal
ADDRESS: University of Essex, Department of Computer Science,
Wivenhoe Park, Colchester Essex, CO4 3SQ, UK
WEB: http://privatewww.essex.ac.uk/~hgmarq/
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<http://privatewww.essex.ac.uk/~hgmarq/>=20

________________________________

From: jav...@li... on behalf of Radu =
Bogdan Rusu
Sent: Sat 07/05/2005 18:08
To: jav...@li...
Subject: Re: [Java-player-users] Position and Laser interfaces conflict?

I'm not quite sure what you're experiencing here. The exact same code =
works
with Javaclient 1.6.2e just fine. By the way, one small note:

- try to use the javaclient.jar file or the classes subdirectory and use
"import javaclient.*;" instead of building your code inside the =
javaclient
sources (hence, the need for "package javaclient;"). I now realize the =
need
for some simple examples for our users... We provided the ANT makefile =
and
shell scripts which should build the classes, the jar and the =
documentation,
but we forgot to explain that to our users. :(

So your code works fine with player and stage (CVSed) and Javaclient =
1.6.2e.

What version of player/stage are you using, and how does your =
config/world
file looks like? I'm quite sure this should work with any version, but =
who
knows... nobody is perfect :)

Cheers,
Radu.

On Sat, May 07, 2005 at 05:11:26PM +0100, Hugo Gravato Marques wrote:
>
>
> Hello...
>
> I've tried to make a small java class in order to understand the way =
the
> interaction between the java client, the player and stage works.
> So far I manage to get information about some sensors and move the =
robot
> around... However I found a problem that I don't understand why it
> happens... When I run the code below I have the information about the
> position of the robot updated every step... And that is OK... But when =
I
> uncomment the (apparently innocent) LaserInterface line I stop having =
that
> information updated and it prints always the same position. Can =
someone help
> me please...
>
> Thanks...
> hugo
>
>
> *******************************  CODE  **********************
>
> package javaclient;
>
> public class Test {
>  =20
>    public static void main(String[] args) {
>    =20
>      String hostToConnect =3D args[0];
>      int portToConnect    =3D Integer.parseInt(args[1]);
>
>      System.out.println(" Host: "+hostToConnect+"  Port: =
"+portToConnect);
>    =20
>      PlayerClient robot =3D new PlayerClient (hostToConnect, =
portToConnect);
>      PositionInterface ppd   =3D robot.requestInterfacePosition(0, =
'a');
>    =20
> //     LaserInterface    lpd   =3D robot.requestInterfaceLaser(0, =
'a');
>      robot.runThreaded(-1, -1);
>    =20
>      for(int i =3D 0; ; i++) {
>         robot.readAll();
>=20
>         for(int j =3D 0; j < 100000000; j++){}
>        =20
>         ppd.setSpeed(100, 0);
>         System.out.println(ppd.getX() +  " " + ppd.getY());
>
>      }
>   }
> }
>
>
>
> ----------------------------------------------------
> Hugo Gravato Marques, University of Essex, PhD Student
> PHONE: +44 (0)7854917241, England or +351 962482416, Portugal
> ADDRESS: University of Essex, Department of Computer Science,
> Wivenhoe Park, Colchester Essex, CO4 3SQ, UK
> WEB: http://privatewww.essex.ac.uk/~hgmarq/
>

Yours sincerely,
Radu Bogdan Rusu
--
| Radu Bogdan 'veedee' Rusu | http://www.rbrusu.com
| PhD student/teaching assistant
| Robotics Research Group, Technical University of Cluj-Napoca[.ro]
| The optimist sees a task in every problem.
| The pessimist sees a problem in every task.

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