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-   -   Number of Balls (http://www.chiefdelphi.com/forums/showthread.php?t=99353)

Grim Tuesday 07-01-2012 15:48

Re: Number of Balls
 
Quote:

Originally Posted by Ninja_Bait (Post 1098124)
The animation has 6 balls, two on each bridge.

Animation is not always a legitimate source.

Sean M 07-01-2012 15:56

Re: Number of Balls
 
Quote:

Originally Posted by StealthMentor (Post 1098170)
I do not see anywhere in the rules that says there are, or are not any balls already in the human station either. So there could be more.

Good point.

GaryVoshol 07-01-2012 16:03

Re: Number of Balls
 
Quote:

Originally Posted by StealthMentor (Post 1098170)
I do not see anywhere in the rules that says there are, or are not any balls already in the human station either. So there could be more.

It would take a rule change for there to be more. There is no provision anywhere else in the rules that I have seen for allocating more balls. 18 total, that's all she wrote.

RoboMaster 07-01-2012 17:18

Re: Number of Balls
 
Ok, the official rules need to be quoted here. There's too much confusion with bridges and alliance bridges and the animation. Please, read the manual.

I believe there are only two rules that relate.

Quote:

[G01]
When placed on the Court, each Robot must be in compliance with all Robot rules, may not exceed 60 in. tall, and have all appendages within its Frame Perimeter. The Robot must be in contact with its Key, and may contain up to two Basketballs.
Quote:

[G05]
Each Bridge will be preset with two Basketballs. Basketballs allotted to Robots that are not used, will be preset on the Coopertition Bridge.
2 balls x 6 robots
plus
2 balls x 3 Bridges
=18 total

Extras not used by the robots will simply be added to the middle Coopertition Bridge instead.

This total excludes any that the human players might have. I believe there are no rules on that, so therefore the only balls available at the beginning are the ones mentioned by the above two rules. So, human players don't get any balls at the beginning.

George Nishimura 07-01-2012 17:49

Re: Number of Balls
 
I'm guess this will be cleared up straight away in a Q&A/Update.

But doesn't the rule mean that it's possible that the Coopertition Bridge will have 14 balls on it? I feel sorry for the refs :P.

Also, on the topic of ball setting, is there a rule on what counts as being 'used by the robots' (ie, can it be like last year and have the balls lying next to/touching the bumper so other robots can pick them up?

nocapitals 07-01-2012 17:57

Re: Number of Balls
 
Quote:

Originally Posted by Gnishi2011 (Post 1098321)
I'm guess this will be cleared up straight away in a Q&A/Update.

But doesn't the rule mean that it's possible that the Coopertition Bridge will have 14 balls on it? I feel sorry for the refs :P.

Note to self: Program an 18 ball autonomous mode.

GaryVoshol 07-01-2012 18:38

Re: Number of Balls
 
Quote:

Originally Posted by Gnishi2011 (Post 1098321)
... what counts as being 'used by the robots' (ie, can it be like last year and have the balls lying next to/touching the bumper so other robots can pick them up?

Rule [G01] that was quoted says the robots must "contain" up to 2 balls. Something to be clarified by the GDC, but I would say on the floor touching the bumper isn't "contained".

seg9585 07-01-2012 18:53

Re: Number of Balls
 
Assuming there are 18 balls total:

Suppose an alliance decided to claim possession of as many balls as possible to prevent the other team from scoring.
Per the rules, each Inbounder may hold up to 2 balls. Also, each robot may hold up to 3 balls. No extra balls may be left in the Corral.

2 * 3 Inbounders + 3 * 3 Robots = 15 balls taken out of play from other team.
So, only 3 balls are now in play for the opposing team.

Makes for a pretty low scoring match.

Tomatosoup 07-01-2012 19:10

Re: Number of Balls
 
Quote:

Originally Posted by seg9585 (Post 1098407)
Assuming there are 18 balls total:

Suppose an alliance decided to claim possession of as many balls as possible to prevent the other team from scoring.
Per the rules, each Inbounder may hold up to 2 balls. Also, each robot may hold up to 3 balls. No extra balls may be left in the Corral.

2 * 3 Inbounders + 3 * 3 Robots = 15 balls taken out of play from other team.
So, only 3 balls are now in play for the opposing team.

Makes for a pretty low scoring match.

That's like suggesting that last year, people might not put any tubes into play. You'd have to be pretty confident in your end game bonus abilities. Plus, ranking is based partially on score, a team using that strategy, would rank below a team that won just as many matches, but played the intended way.

Dr Theta 07-01-2012 19:17

Re: Number of Balls
 
Quote:

Originally Posted by Tomatosoup (Post 1098431)
That's like suggesting that last year, people might not put any tubes into play. You'd have to be pretty confident in your end game bonus abilities. Plus, ranking is based partially on score, a team using that strategy, would rank below a team that won just as many matches, but played the intended way.

Ranking this year is based off of :
1st order sort
Qualification Score (W-L-T)
2nd order sort
Cumulative sum of Hybrid Hoop points
3rd order sort
Cumulative sum of Bridge points
4th order sort
Cumulative sum of Teleop Hoop points
5th order sort
Random sorting by the FMS

tim-tim 07-01-2012 20:17

Re: Number of Balls
 
Quote:

Originally Posted by Dr Theta (Post 1098435)
Ranking this year is based off of :
1st order sort
Qualification Score (W-L-T)

2nd order sort
Cumulative sum of Hybrid Hoop points
3rd order sort
Cumulative sum of Bridge points
4th order sort
Cumulative sum of Teleop Hoop points
5th order sort
Random sorting by the FMS

The 1st order sort is more than just (W-L-T). It also adds the Coopertition points awarded to teams that have robots on their alliance on the center/neutral bridge at the end of the match.

In the past a win earned 2 points, a tie 1 point and a lose resulted in 0 points received. In addition to these points, 2 points are awarded to each alliance if the robots from each alliance are balanced on the center bridge and 1 point if two robots are on the bridge, but not balanced.

So effectively, you can win and earn 2, 3, or even 4 points. Similarly you can lose and earn 0, 1, or even 2 points.

Ninja_Bait 07-01-2012 20:53

Re: Number of Balls
 
Quote:

Originally Posted by Grim Tuesday (Post 1098175)
Animation is not always a legitimate source.

Just pointing it out, I have my own reservations on the matter.

Grim Tuesday 07-01-2012 21:24

Re: Number of Balls
 
Quote:

Originally Posted by tim-tim (Post 1098511)
The 1st order sort is more than just (W-L-T). It also adds the Coopertition points awarded to teams that have robots on their alliance on the center/neutral bridge at the end of the match.

In the past a win earned 2 points, a tie 1 point and a lose resulted in 0 points received. In addition to these points, 2 points are awarded to each alliance if the robots from each alliance are balanced on the center bridge and 1 point if two robots are on the bridge, but not balanced.

So effectively, you can win and earn 2, 3, or even 4 points. Similarly you can lose and earn 0, 1, or even 2 points.

Your score during the match, however, is only a 4th tie-breaker, which doesn't matter much.

Daniel_LaFleur 07-01-2012 21:40

Re: Number of Balls
 
Quote:

Originally Posted by seg9585 (Post 1098407)
Assuming there are 18 balls total:

Suppose an alliance decided to claim possession of as many balls as possible to prevent the other team from scoring.
Per the rules, each Inbounder may hold up to 2 balls. Also, each robot may hold up to 3 balls. No extra balls may be left in the Corral.

2 * 3 Inbounders + 3 * 3 Robots = 15 balls taken out of play from other team.
So, only 3 balls are now in play for the opposing team.

Makes for a pretty low scoring match.

If the 3 inbounders each have 2 balls then as soon as another ball is scored they will be in violation of <G31>, even if an inbounder throws one into the field, another inbounder cannot 'immediately remove' a ball from the corral since he'll have 2 in his possession.


Quote:

[G31] Only Inbounders may contact Basketballs; each Inbounder may hold a maximum of two Basketballs. During Teleop, Inbounders must remove Basketballs from the Corral immediately upon arrival. All Basketballs in the Alliance Station must be held by Inbounders once removed from the Corral.
Violation: Foul

qzrrbz 07-01-2012 23:23

Re: Number of Balls
 
We definitely need an operational definition of "immediately" here.


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