[robocup-rescue-s] Re: Help about communication process programming

From: Carla Quintero (c_quintero_rocas@hotmail.com)
Date: Thu 07 Jul 2005 - 22:49:55 GMT


Dear Arash,

Thanks a lot for your help and I think my program is working now :-)

Regards.

>From: "Arash Rahimi" <rahimi@ce.aut.ac.ir>
>Reply-To: rahimi@ce.aut.ac.ir
>To: "Carla Quintero" <c_quintero_rocas@hotmail.com>
>CC: robocup-rescue-s@mailman.cc.gatech.edu
>Subject: Re: Help about communication process programming
>Date: Thu, 7 Jul 2005 09:27:07 +0430 (IRDT)
>
>Dear Carla,
>
>in class 'CenterAgent' inherited from 'Agent' the
>'act' method is implemented to send 'rest' action.
>But of course, you can override it in your
>'FireStation' class and put your code in there.
>
>there's also another solution:
>
>you can add a new method - let's call it 'hearDecide' -
>to class 'Agent' like this:
>
>protected abstract void hearDecide();
>
>and modify the method 'run' of class 'Agent' as
>follows:
>
> .
> .
> .
>if (data instanceof KaSense) {
>// add this line here:
> hearDecide();
> KaSense sense = (KaSense) data;
> .
> .
> .
>
>
>Now as you see, when we receive a 'KA_SENSE'
>packet, we are sure that the new cycle is
>beginning and as a result we have received
>all the messages we should have heard. So,
>we call 'hearDecide' to notify the decision
>layer about this event. If you implement
>'hearDecide', you can use it instead of 'act'
>for this purpose.
>
>
>Regards,
>Arash Rahimi,
>Member of S.O.S.
>
>
>
> > Dear all,
> >
> > Thanks for your response Arash and Mohammed!
> >
> > Arash, I understand what you tell me. However, I guess, center agents
>dont
> > implement 'act()' method (?), Is it true?
> >
> > What do you think?, I need know whether this is the last message
> > fireStation
> > agent is receiving or not from fireBrigades. I Just am implementing
>'hear'
> > method in My FireStation agent.
> >
> > Thanks a lot,
> >
> > Carla.
> >
> >>From: "Arash Rahimi" <rahimi@ce.aut.ac.ir>
> >>Reply-To: rahimi@ce.aut.ac.ir
> >>To: "Carla Quintero" <c_quintero_rocas@hotmail.com>
> >>CC: robocup-rescue-s@cc.gatech.edu
> >>Subject: Re: Help about communication process programming
> >>Date: Wed, 6 Jul 2005 14:23:04 +0430 (IRDT)
> >>
> >>Dear Carla,
> >>
> >> The current message-processing scheme in YabAPI is
> >>provided to the agent-developers by calling a method
> >>named 'hear' when a message is received. The developer
> >>can implement this abstract method and put the desired
> >>code in it in order to decide if it should be processed
> >>and processing it if so. There, the problem is that
> >>you don't know whether this is the last message your
> >>agent is receiving or not. The other problem is that
> >>you have a local view in order to decide whether to
> >>read this message or not.
> >>
> >> Now, the question is how to solve this problem. As
> >>the simplest solution, you can save the sender and
> >>the content of the message your agent receives in a
> >>buffer and then in the 'act' method of the next cycle
> >>you can start choosing the messages to read and then
> >>process the messages you have chosen. This can be
> >>done more systematically by slightly modifying YabAPI
> >>in order to do these tasks automatically and provide
> >>you with a method to choose the message you have
> >>received and then sends the chosen messages to another
> >>method in order to be processed.
> >>
> >>Regards,
> >>Arash Rahimi,
> >>Member of S.O.S.
> >>
> >> >
> >> > Dear all,
> >> >
> >> > I am sending messages from the fireBrigade agents to the fireStation
> >>each
> >> > cycle. I Just am sending 1 message for each fireBrigade each cycle
>to
> >> > fireStation. My question is: For example, If I have 10 fireBrigades
> >> and
> >>1
> >> > fire Station, and it is cycle 60 of simulation, Is it possible
> >>firestation
> >> > knows if all the 10 fireBrigades have sent his message at cycle 60?.
> >> The
> >> > reason is that I want one method begins in fireStation agent just
>when
> >>it
> >> > has received all the messages from available fireBrigades in some
> >> cycle
> >> > (It
> >> > could be less than 10 messages). I mean, in some cycle it is possible
> >> > fireStation does not receive some message from some fireBrigade. I'm
> >>not
> >> > sure that firestation will receive exactly 10 messages, firestation
> >>could
> >> > receive just 9 or 8 messages in some cycle for example.
> >> >
> >> > I'm using Yabapi for programming agents.
> >> >
> >> > Thanks a lot in advance.
> >> >
> >> > _________________________________________________________________
> >> > MSN Amor: busca tu ˝ naranja http://latam.msn.com/amor/
> >> >
> >> >
> >>
> >
> > _________________________________________________________________
> > MSN Amor: busca tu ˝ naranja http://latam.msn.com/amor/
> >
> >
>

_________________________________________________________________
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