[robocup-small] ball replacement with pass

[markgeiger at posteo.de]

The rule states that the "non placing team" is not allowed to touch the 
ball or to stay near the ball. If the team touches the ball, its counted 
as a foul.

The "> 1.5m/s rule" is there to prevent the "placing team" from just 
simply shooting the ball against an enemy robot. Because by the old 
rule, this would award an indirect free kick for the "placing team"... 
which is unfair, because the "non placing team" cant evade the ball (if 
its kicked really fast).

The questions is: whos fault is it, when a replacement pass hits an 
enemy robot. By the new rule we say:
- Its the fault of the "placing team" if the ball was too fast (because 
its to fast [> 1.5] for the enemy to evade).
- Its the fault of the "non placing team" if the ball is slow (because 
the enemy robot could easily evade... and he has to keep the minimum 
distance to the ball).

But just to remind you, you are still allowed to play passes with speed 
 >1.5m/s you just should be sure, that no enemy robot will intercept the ball while its faster than 1.5m/s.

PS: I hope that no Team will try to actively intercept the ball 
placement passes...

Greetings and best regards,
Mark


On 07.06.2017 12:21, im161001 at cis.aichi-pu.ac.jp wrote:
> Thank you Mark,
> I understood the rule.
> 
> But I wonder that enemy team gets benefit when they touches the ball
> moving with > 1.5m/s.
> What is the reason why this rule exists?
> 
> Best Regard,
> 
> Yusuke Adachi (RoboDragons)
> 
> ---
> 安達　勇介 (Adachi Yusuke)
> 愛知県立大学大学院　情報科学研究科　情報システム専攻　2年
> Graduate School of Information Science and Technology,
> Aichi Prefectural University, 2nd year
> 
> mail : im161001 at cis.aichi-pu.ac.jp
> 
> ________________________________________
> 差出人: markgeiger at posteo.de <markgeiger at posteo.de>
> 送信日時: 2017年6月7日 17:00
> 宛先: 安達　勇介
> CC: robocup-small at cc.gatech.edu; apurobo at ml.ist.aichi-pu.ac.jp
> 件名: Re: [robocup-small] ball replacement with pass
> 
> Hi Yusuke Adachi,
> 
> ball replacement with pass is still ok. The ball speed is not limited 
> to
> 1.5m/s. The rule only applies if the ball touches an enemy robot and 
> the
> speed is > 1.5m/s. So you can still do passing for the ball placement,
> just take care that there are no enemy bots in the passing path. Or 
> pass
> with a speed < 1.5m/s !
> 
> Greetings
> Mark
> 
> On 07.06.2017 09:48, im161001 at cis.aichi-pu.ac.jp wrote:
>> Dear SSL members,
>> (CC: RoboDragons)
>> 
>> I read the new rule.
>> And I have a question about the section 9 (The Ball In and Out of
>> Play).
>> 
>> In that ball replacement, do you suppose that a robot is dribbling a
>> ball?
>> The ball is limited to under 1.5m/s, and this means that we cannot
>> pass.
>> If so, it takes our freedom to develop for the ball replacement.
>> I think dribbling takes a time when the replace point is far away.
>> 
>> Our team showed ball replacement with pass last year (in Technical
>> Challenge).
>> Should we rewrite our program?
>> 
>> Best Regard,
>> 
>> Yusuke Adachi (RoboDragons)
>> ---
>> 安達　勇介 (Adachi Yusuke)
>> 愛知県立大学大学院　情報科学研究科　情報システム専攻　2年
>> Graduate School of Information Science and Technology,
>> Aichi Prefectural University, 2nd year
>> 
>> mail : im161001 at cis.aichi-pu.ac.jp
>> _______________________________________________
>> robocup-small mailing list
>> robocup-small at cc.gatech.edu
>> https://mailman.cc.gatech.edu/mailman/listinfo/robocup-small
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