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Brickworld 2007, June 21-24, Chicago
Line Maze:
Each robot gets three tries to find the end of a simple maze using line
following techniques. The robot that completes the maze in the shortest time
(after figuring bonuses and penalties) wins. Having the robot learn the maze on
an early run in order to make a faster run later is highly encouraged, but it
must be autonomous: no remote control or pre-programming of the maze is
permitted.
Arena:
The maze will be on an 8’ by 8’ white background, with lines constructed from ¾”
black electrical tape. The maze will be rectilinear, laid out on a 7 x 7 grid:
in other words, all turns and junctions will be at multiples of 90°, and
separated by multiples of 1’, with a 1’ outer boarder. Lines will either simply
terminate, turn 90°, or branch in a “T” or “+” intersection, and there will be
no loops present. A solid, black, 6” diameter circle will signify the end of the
maze. Every effort will be made to make sure the intersections or line
terminations match the 1’ grid, but these distance may be slightly off due to
course construction. The course will not be available before the event (although
a calibration course will be provided), so the actual maze layout will not be
known in advance. However, the starting point will be defined as the lower left
corner of the maze, while the ending point will be the upper right corner.
Event structure:
Each robot will have a total of five minutes to make at most three complete
attempts at the maze. In “solving” the maze, a robot must clearly traverse every
line segment and junction along the path from start to finish (backtracking is
allowed; the path does not have to be the shortest possible). At no time is it
allowed to “jump lines” or exit the playing surface. If the robot does violate
this, the judge will levy a 10 second penalty (the contestant will have to hold
or stop the robot for 10 seconds, as signaled by the judge), and the contestant
may then restart the robot either at the beginning, or if they prefer at the
point where the robot left the maze. In this case, even if restarting at the
beginning, it will be considered a single attempt. A 10 second bonus will be
awarded (i.e.- 10 seconds will be subtracted from the run time) for any robot
that can clearly recognize and signal the end of the maze (either by halting for
at least 10 seconds, or additionally by playing a sound, flashing a light,
“dancing”, etc.). The robot is allowed to continue after it has reached the end
(in other words, recognizing the end is not required), it simply will not
receive any bonus in this case. The time for a single run will be the interval
from the first motion of the robot to when the end circle is encountered, after
adjustments for penalties or bonuses.
Robot construction and limitations:
All robots must be constructed of 100% unmodified LEGO parts (that is, any part
that can be bought directly from LEGO, be it Shop-at-home, LEGO Education,
etc.): no gluing, cutting, melting, or other modification or modified pieces are
allowed. This rule applies to sensors, motors, and other electronic devices as
well. All robots must fit within a 1’ by 1’ square frame (although they can have
any flat orientation within that frame; in other words, the front of the robot
could be diagonal within the frame if the rest of it fits in that orientation).
There is no weight limit.
Judges discretion:
All disputes about these rules and their interpretation will be adjucated by the
judges at the event (although requests for clarifications should be made as
needed, prior to the event). The judges discretion will be final, and will
attempt to enforce the spirit of the event.
--
Brian Davis
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Message has 1 Reply:
 | | Re: Brickworld 2007 - Line Maze
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| Brian Davis wrote: Great contest Brian - I have a question about this though: > In “solving” the maze, a robot must clearly traverse every (...) I think you mean the robot must only travel along the lines, it can't just drive across the squares. The (...) (18 years ago, 19-Apr-07, to lugnet.events.brickworld, lugnet.robotics)
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Message is in Reply To:
| | Brickworld 2007 - Call for Mindstorms competitors
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| As part of Brickworld 2007 in Chicago, Jun 21-24, we are going to try to run at least four seperate Mindstorms events: *The ever-popular Sumo (4' ring, 2 lb limit, flipping strongly encouraged) *Line maze (find your way to the exit, as fast as (...) (18 years ago, 18-Apr-07, to lugnet.events.brickworld, lugnet.announce, lugnet.general, lugnet.events, lugnet.robotics) !
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