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-   -   Shooting full-court: The uprising of the human-loader shooters (http://www.chiefdelphi.com/forums/showthread.php?t=113820)

45Auto 27-02-2013 15:26

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

AND... if push comes to shove, all the park-and-shoot needs to do to overcome the defender 4 feet away is to pull away from the wall (like they are going to leave the feeder station), turn to their right, and fade back to the opposing teams driver station to distance themselves from the defender and make their shots. Then load up and repeat.

This routine should take mere seconds
and should still allow you to to empty 36-40 of the feeder station discs. Meaning the 84" bot would have to jockey for blocking position.
That will be one heck of an impressive targeting system and will require an amazingly consistent shooting mechanism since the offensive robot would have to do it on the move while the defensive robot is bouncing off them every couple of seconds, once the offensive robot pulls away from the protected feeder station.

Joe Ross 27-02-2013 15:32

Re: Shooting full-court: The uprising of the human-loader shooters
 
I'm waiting for a full court shooter that does this: http://i.imgur.com/Ez23N.png

BJC 27-02-2013 15:58

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

Originally Posted by lemiant (Post 1241195)
How are you calculating this number?
A relatively flat shot will rise 54" (114"-60") over ~50 feet. Which gives a slope of ~1 inch of rise per foot of travel. That would require 24 feet of space(almost half of the field!) before a frisbee would clear a 84" tall robot.

I modeled the situation in Cad then pulled dimensions from that. I approximated the shot trajectory of the disks being shot based on the many full court shooters from various teams on youtube/chiefdelphi.

Quote:

Originally Posted by Paul Copioli (Post 1241199)
That's not how Frisbees Fly. You can get them to altitude quickly and they naturally level off and travel relatively flat for quite a distance.

Also, many of you are not taking into consideration Frisbee curve and the defensive robot's own tower. A tall defensive robot can get blocked by its own tower if a cross court shooter has dialed in their trajectory.

This is true, with serious spin disks could be curved so that they go over the opponent pyramid. However, between the pyramid and the safe zone there is still quite a lot of room for a defender to stop the disks before they get even that far.

I think the core of the problem is as you describe Paul. Disks naturally level off and “float” in the downward half of their trajectory. This makes it difficult to shoot them with a high arc. What I think would be interesting would be shooting full field upside down disks. Upside down disks don’t have the floating tendency which means one can probably shoot them with a much higher (unblockable) trajectory and still make them into the goal.

Interesting thread.
Regards, Bryan

Lil' Lavery 27-02-2013 16:11

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

Originally Posted by Zebra_Fact_Man (Post 1241159)
2) Absolutely true; if there are no discs on the floor (i.e. discs are not being shot from the feeder station), the floor feeder is absolutely useless.

Well, 10 discs start on the floor. And if the floor loading robot can score some of those discs in autonomous, it's already worth having.

Quote:

Originally Posted by Wing (Post 1241186)
You're right in the qualification matches, but in my experience, no one plays defense in qualifications. You'd be lucky to run into a team that is humble enough to play defense instead of offense. However, I think it becomes very evident to those higher ranked teams in eliminations that if there is a cross court shooter, then immediately following autonomous, it becomes priority to stop that shooter. You'll likely see alliance picks and defensive strategies geared to stop that shooter. I think it will be likely that your cross court shooter bot might have some heavy pressure placed on it in the match, which will make you miss some shots, even if you are 60" tall. Don't forget that humans are intimidated by pressure.

What? When did Georgia become so soft? I remember going to the Peachtree in 2006, and having tons of defense be played not only in qualifications, but even practice matches (which I was none too happy about). And just about every event in the Mid-Atlantic and New England is loaded with defense, even durign qualifications.

billbo911 27-02-2013 17:07

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

Originally Posted by Joe Ross (Post 1241201)
I'm waiting for a full court shooter that does this: http://i.imgur.com/Ez23N.png

Maybe outdoors with a strong onshore flow! Although, the Santa Anna's might do it as well.

Anupam Goli 27-02-2013 20:54

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

Originally Posted by Lil' Lavery (Post 1241218)
Well, 10 discs start on the floor. And if the floor loading robot can score some of those discs in autonomous, it's already worth having.


What? When did Georgia become so soft? I remember going to the Peachtree in 2006, and having tons of defense be played not only in qualifications, but even practice matches (which I was none too happy about). And just about every event in the Mid-Atlantic and New England is loaded with defense, even durign qualifications.

When 2415 is the highest scoring robot and not a single robot crossed over to play defence on them during most of the qualifications and eliminations in the last 2 years, I call that a lack of defence (Not taking anything away from 2415's accomplishments at all, and I think even with defence they would've won every match that they did).

sdcantrell56 27-02-2013 23:06

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

Originally Posted by Wing (Post 1241326)
When 2415 is the highest scoring robot and not a single robot crossed over to play defence on them during most of the qualifications and eliminations in the last 2 years, I call that a lack of defence (Not taking anything away from 2415's accomplishments at all, and I think even with defence they would've won every match that they did).

What you are starting to understand, and the majority of FIRST doesn't (not including most on CD) is that the majority of FIRST teams are not capable or at least not interested in executing strategy, building within their means, or in general being competitive. EWCP had a great analysis of average scores over the years and it was truly eye-opening.

Because of this, many teams will be able to take advantage and depending on the current gameplay be able to score full-field shots until someone finally realizes what is going on.

PayneTrain 27-02-2013 23:20

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

the majority of FIRST teams are not interested in executing strategy, building within their means, or in general being competitive
I feel like the "Chief Delphi Bubble" is larger and thicker than ever for some reason. There will not be a lot of strong defense because the teams capable of strategizing for a strong defense are likely mechanically capable of making more impact on offense, and teams more mechanically inclined to see success on defense do not have the ability, knowledge, or willpower to develop a strategy around it.

People also think "everyone should be climbing 10 points." If 70% of teams have one successful 10 point climb, that would surprise me.

People think full court shooters will see issues all the time, but in reality, they don't need to display that capability all weekend to get a high seed pick, and most alliances won't plan for a strategy to counter it in elims.

JB987 27-02-2013 23:46

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

Originally Posted by PayneTrain (Post 1241397)
I feel like the "Chief Delphi Bubble" is larger and thicker than ever for some reason. There will not be a lot of strong defense because the teams capable of strategizing for a strong defense are likely mechanically capable of making more impact on offense, and teams more mechanically inclined to see success on defense do not have the ability, knowledge, or willpower to develop a strategy around it.

People also think "everyone should be climbing 10 points." If 70% of teams have one successful 10 point climb, that would surprise me.

People think full court shooters will see issues all the time, but in reality, they don't need to display that capability all weekend to get a high seed pick, and most alliances won't plan for a strategy to counter it in elims.

Any alliance that is playing to win will plan on possibly facing a full court shooter and find a second pick that has a couple of pounds to spare and provide them with a simple pvc picket fence that tops out at 83.75";)

pfreivald 28-02-2013 00:07

Re: Shooting full-court: The uprising of the human-loader shooters
 
I was shocked and appalled at the lack of defense at regionals last year, especially on non-key shooters.

This year, your best bet for defending well-built full-court shooters is to prevent them from getting to their loading zone in the first place (using your own pyramid to help, of course) -- which is easier said than done, especially if they've realized this already and have the drive train to plow you out of the way.

That said, I hope the penalties are called better than they were at Buckeye last year... There were quite a few situations where the defending bot was in the key, preventing the offensive robot from touching it, and fouls were called on the defending bot. :/

s_forbes 28-02-2013 00:20

Re: Shooting full-court: The uprising of the human-loader shooters
 
Quote:

Originally Posted by Joe Ross (Post 1241201)
I'm waiting for a full court shooter that does this: http://i.imgur.com/Ez23N.png

You're insane! That will never work. :rolleyes: I have yet to see any shooters utilizing leaf blowers to assist in frisbee lift, but that would make my day. Also, defending robots using leaf blowers will be an instant favorite of mine.

With a gamepiece so dependent on air, you'd think there would be more teams trying to control this medium!


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