Re: [Java-player-developers] Interested in java-player

[Leo N. <leo...@gm...>]

Dear Radu

As I said, I'm willing to help, and, if needed, mantain the javaclient.
Right now I face some problems working with jc, as, for example, the planne=
r
and the localize interfaces, for example, have both the same "bug", that is=
,
player sends an extra integer, and as it is not contemplated in the XDR
decoding (in the handle response routine), the PlayerPose information you
get is shifted one 4 bytes field, and so, you get Px =3D bugos data, Py =3D
realPx, Pa=3DRealPy, and RealPa is lost in the space ;)

The same thing, but just at the inverse order, happends in the
Graphics2dInterface. When coding, it adds twice the point_count, and so all
the data is shifted when Player receives it (and obviously, the polyline is
far from being what you thought it should be.

As I said, I have no source of information about the correcness of the XDR
messages, and I can only try to intercept with ethereal, or digg into the C
client, and, as you will know, it's not the very straigth forward way to
work ... =BFcould you be so kind to provide me some sort of documentation
about the XDR messages?

Fortunatelly, I need jc for my PhD, so, I will be very active, I think ;)

Bests
Leo

2007/11/14, Radu Bogdan Rusu <ru...@cs...>:
>
>
> Dear Leo,
>
> Thank you for your interest in Javaclient and well, the whole Player
> project ! =3D)
>
> You are right, the Javaclient project is very inactive at the moment, and
> a few interfaces need to have their XDR
> decoding routines fixed. It's a matter of hours (patching + testing), but
> unfortunately, my time is very limited these
> days, and, as I am not using Javaclient in my research work for now, I am
> unable to make those corrections myself at
> this point. Most of my efforts have gone towards the Player project itsel=
f
> as a whole, and well, my PhD thesis. =3D)
>
> Therefore, any help would be highly appreciated, not just for me or for
> the project, but for the entire community who
> uses it and would like to use it in the future.
>
> Let me know if you want to help, and I can guide you through some of its
> internals (not that big of a deal anyway as
> I've tried to make everything pretty straightforward).
>
> Cheers,
> Radu.
>
> Leo Nomdedeu wrote:
> > Hi all
> >
> > My name is Leo Nomdedeu, from Spain. I'm new to this list.
> > I'm working on an european project where we decided to use P/S some tim=
e
> > ago. Now I face the need to use java-client to control a set of mobile
> > robots using P/S. I'm havin some trubles with some interfaces, e.g.
> Planner
> > giving wrong x,y data (a,x,y) instead of (x,y,a), graphics not drawing
> > (decoding failed in stage), position turning in place instead of going
> to
> > the position designed, etc.
> > I wish to aid as much as possible with this player-client, and I have
> > allready made some simple modifications from my own but I cannot be sur=
e
> if
> > this modifications are good or not due to I do not have access (aka, I
> have
> > not found) to any information on the current XDR messages Player is
> waiting
> > for. =BFIs there any place I can look at to get such info?
> >
> > An other question I have. =BFIs the Java-Client project alive? I mean, =
I
> have
> > not seen much activity in the mailing lists from 2006 year to now ...
> >
> > I wish to continue my development in Java as I have several years of
> > expertise with this language, so I'm ready to work in the java-client
> > project if needed. It's better than having to work in C ...
> >
> > Wainting for your answers...
> > Leo
> --
> | Radu Bogdan Rusu | http://rbrusu.com/
> | http://www9.cs.tum.edu/people/rusu/
> | Intelligent Autonomous Systems
> | Technische Universitaet Muenchen
>



--=20
**************************************
Leonardo Nomdedeu Calvente
leo...@gm...