Chief Delphi - Starting position

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- FRC Game Design (http://www.chiefdelphi.com/forums/forumdisplay.php?f=148)

- - Starting position (http://www.chiefdelphi.com/forums/showthread.php?t=90451)

brian3795

29-01-2011 17:14

Starting position

Trying to decipher the game rules for starting position. This is our take:

The bot starts facing your scoring pegs, with the rear bumper outside the line between your opponent's poles. IOW, your photo sensor is set up over a tracking line at the start of a match.

The ubertube is already in place on the bot before the match begins.

Initial bot placement is randomly determined by some method, so you won't know whether or not you'll have to deal with the split tracking line until the time of the match.

Are we close?

GaryVoshol

29-01-2011 18:23

Re: Starting position

Read it again:

Quote:

<G04> Each ROBOT must be positioned on the FIELD so that the BUMPER closest to it‟s ALLIANCE‟S PLAYER STATION breaks the plane formed by the POSTS of the opposing ALLIANCE‟S TOWERS.

(emphasis mine)

However, from the picture and description in section 2.2.2, the gray tape tracking lines extend farther out than the towers. So it appears you can start with your sensors above the line.

CNettles11

02-02-2011 16:53

Re: Starting position

does the hostbot start with an Übertube?

EricH

02-02-2011 18:03

Re: Starting position

Quote:

Originally Posted by CNettles11 (Post 1014327)

does the hostbot start with an Übertube?

Yes. All robots start with one in contact with the robot.

indubitably

11-02-2011 21:09

Re: Starting position

Okay, It says that the front bumper has to break the plane of the tower, does that mean the back bumper can't break the plane?

GaryVoshol

11-02-2011 21:14

Re: Starting position

Since the plane defined by the TOWERS is only 1.74" wide, it would be pretty hard to have both front and back BUMPERS breaking that plane. So no, only the front BUMPER can break the plane, not the back. This puts all ROBOTS an equal distance from the GRIDS.

AlexD744

14-02-2011 23:20

Re: Starting position

Well, the towers are defined as "an assembly composed of base, post, and tower." And I believe the base is 30" in diameter. So if you have a wide bot, you could conceivably place both bumpers in the plane.

GaryVoshol

15-02-2011 07:40

Re: Starting position

Quote:

Originally Posted by AlexD744 (Post 1023235)

Did you read the rule? (I quoted it for you above.) You have to be lined up in the plane of the POSTS, not the BASE. That's only 1.74" of wiggle room.

Alan Anderson

15-02-2011 10:03

Re: Starting position

Quote:

Originally Posted by GaryVoshol (Post 1020918)

Since the plane defined by the TOWERS is only 1.74" wide, it would be pretty hard to have both front and back BUMPERS breaking that plane.

It would be very easy to do that if you turned the ROBOT sideways. But as long as we're actually reading the rule :D we should note that it doesn't speak of "front" or "back" BUMPERS. You emphasized the relevant word: closest.

IndySam

15-02-2011 10:15

Re: Starting position

To address the OP. Your alliance will determine what bot starts where. The FMS only chooses your player stations.

mwtidd

15-02-2011 10:28

Re: Starting position

I am wondering if you need to start on the lines, or if the horizontal positioning of the robots is up to the teams.

GaryVoshol

15-02-2011 11:14

Re: Starting position

Quote:

Originally Posted by lineskier (Post 1023443)

I am wondering if you need to start on the lines, or if the horizontal positioning of the robots is up to the teams.

That also is up to the alliance.

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