[robocup-small] New Rules

Joydeep Biswas joydeep at cmu.edu
Thu Mar 28 12:53:36 EDT 2013


Hi,

Angelo, you pointed the problem out yourself: I believe that this otherwise
rare scenario will become much more frequent as attackers keep chipping at
the goal in the hopes of scoring a goal.

If we're trying to imitate how a human goalie catches a flying ball, then
the robot goalie should have just a fair chance of controlling how it wants
to release the ball. Hence the suggestion of stopping the game with the
indirect free kick.

-Joydeep

On Thu, Mar 28, 2013 at 11:10 AM, Angelo Gurzoni Jr
<jgurzoni at yahoo.com.br>wrote:

> Hello, everybody****
>
> Wouldn’t the scenario described by Joydeep result in a goal in the same
> way, if we use the current rules, where chip goals aren’t allowed ?****
>
> I’m not saying that Joydeep’s line of thought isn’t appropriate, as
> allowing chip goals may increase the occurrence of this otherwise rare
> event, just trying to put the scenario in the context of how would it be
> handled until now. The suggestion to stop the game when the goalie touches
> seem interesting, indeed.****
>
> ** **
>
> ** **
>
> ** **
>
> Cheers****
>
> Angelo****
>
> ** **
>
> *From:* robocup-small-bounces at cc.gatech.edu [mailto:
> robocup-small-bounces at cc.gatech.edu] *On Behalf Of *Joydeep Biswas
> *Sent:* Thursday, March 28, 2013 11:55 AM
> *To:* Christopher Head
> *Cc:* robocup-small at cc.gatech.edu
> *Subject:* Re: [robocup-small] New Rules****
>
> ** **
>
> Thanks for the clarification.****
>
> ** **
>
> I feel that allowing goals from chip kicks like in the scenario I
> mentioned will promote unintelligent behaviour where attacking robots will
> just keep on chipping at the goal in the hopes that scenarios like this
> happen, and that they will be awarded goals. For the goalie, however, it's
> reasonable to "catch" the chip kick, but entirely unreasonable to predict
> exactly how the ball will bounce off after hitting the goalie. ****
>
> ** **
>
> Therefore, I feel if we are to allow goals from chipping, then if the
> goalie intercepts a chip shot in the defense area, the game should stop and
> the goalie should be awarded an indirect free kick from where it
> intercepted the ball. This is just like in real soccer where if the goalie
> actually catches the ball, he/she has full control of where he/she will
> pass the ball to, next.****
>
> ** **
>
> What are the views of the other participants of the small size league?****
>
> ** **
>
> -Joydeep****
>
> On Thu, Mar 28, 2013 at 12:19 AM, Christopher Head <chead at chead.ca> wrote:
> ****
>
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA256****
>
> Hello,
> Yes, this would be a goal for yellow. The only case when a chip goal is
> not a goal during normal play is if it touches the goalie then goes in
> the goal, WITHOUT touching any other robot in between—this includes
> another defender. We tried to strike a balance between encouraging
> teams to use chippers where it makes sense to do so, while still giving
> the goalie the power to defend effectively against chip goals, and the
> rule about the goalie catching chip kicks that go directly into the
> goal after touching the goalie was our way to (hopefully!) achieve that
> balance.
>
> Chris****
>
>
> On Wed, 27 Mar 2013 18:26:34 -0400
> Joydeep Biswas <joydeep at cmu.edu> wrote:
>
> > Hi Chris,
> >
> > I would like to clarify the rule regarding "catching" chip kicks in
> > the following scenario:
> >
> > Scenario:
> > 1. Yellow robot 0 chip kicks the ball towards blue goal.
> > 2. Blue goalie (blue robot 0) touches the ball, and the ball bounces
> > off its front.
> > 3. The ball, bouncing off the front of blue goalie, hits the back of
> > blue defender robot 1.
> > 4. The ball, after hitting the back of blue defender robot 1, enters
> > the blue goal.
> >
> > Would this scenario result in a goal for yellow team?
> >
> > -Joydeep****
>
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> ** **
>
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