Subject:
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Re: rtlToronto15 January issues
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Newsgroups:
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lugnet.org.ca.rtltoronto
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Date:
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Mon, 25 Aug 2003 16:44:30 GMT
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Reply-To:
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[toronto@hollynorth]NoMoreSpam[.com]
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Viewed:
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481 times
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>
>
> v
> *---<T>---<T>--<T>---*
> blue | | | red
> | | |
> | | |
> | | |
> +----<T>---+
> ^
>
> T - a T joint (duh!)
> > - a blue marker
> < - a red marker
>
> Calum was saying that at each T joint, there would be a marker as to the
> "right" way to go to reach the objective. But, you could go on
> alternate routes and still find your way back using markers.
>
> So the blue bot, gets to the first T, and can either follow the blue
> marker, or go explore. Then, when it gets to the second T, it has the
> same options - follow the blue marker (which would point it twards a way
> to the objective), or go explore. If it gets to the T marked with a
> 'v', and chooses to go down, it will reach the next 'T' (marked with a
> '^'), and know it needs to reverse directions in order to reach it's
> objective. All the while, the Red robot doesn't care about all these
> blue marks, as it's looking for red ones.
>
> Does that make sense? Should I go sit on the sidelines a little longer?
>
> :)
I blame the ascii art.
:)
this is the problem I see.
(more ascii art)
1 2
----------------------------
I
red
I
I
I
3
OK, put a robot at the base of the T. (number 3)
as it drives up the pipe, it reads the RED tape. so it should turn left to
the # 2.
so far easy.
BUT
2 1
----------------------------
I
red
I
I
I
3
same T, but this time from the back.
(notice how the 1 and 2 are reversed)
same robot, starts at the 3... but because it is now at the "back" of the T,
when it sees the red tape it will turn left. as agreed. (red = left)
~B U T ~
now, instead of going to # 1 it actually heads to # 2
Chris
on topic, but still gets in a potty joke.
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Message has 3 Replies:
 | | Re: rtlToronto15 January issues
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| (...) Oh, that's easy - just use a four-bit BCD TapeCode, assigning a 3-digit rotational position about theta to find the correct pipe exit point. Piece of cake. In addition to playing "What a Girl Wants", all robots must bake a cake, and hop on one (...) (21 years ago, 25-Aug-03, to lugnet.org.ca.rtltoronto)
| | | Re: rtlToronto15 January issues
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| (...) Ah ha! Here's where we differ - I don't see the problem :P You read the markers are you approach the T joint, and expect to know which way to go with the knowledge aquired. My markers are _after_ the T, and they just tell you if you're going (...) (21 years ago, 25-Aug-03, to lugnet.org.ca.rtltoronto)
| | | Re: rtlToronto15 January issues
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| (...) Okay, what about this: 1---...---T------2 ^^^| | | | 3 Entering joint at 1, white tape is ONLY on the half of the pipe which has the correct path 3. We tape around 180 degrees of the pipe (ie, a C shape). This also allows the robot to align (...) (21 years ago, 25-Aug-03, to lugnet.org.ca.rtltoronto)
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Message is in Reply To:
| | Re: rtlToronto15 January issues
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| (...) Hey, INS was getting possessive, and didn't want to let me leave the country. Now that that's fixed, maybe we'll visit for the next event :) (...) Maybe I'm dense. Actually, forget the maybe - but here's what I'm thinking of (bad ascii art (...) (21 years ago, 25-Aug-03, to lugnet.org.ca.rtltoronto)
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