Clarifications 2014a

This page summarizes rule clarifications in question / answer format. 

Question: Am I using the right rule set document?
Answer: First make sure that the document has “2014” in its title. This site and http://www.dprg.org/competitions/index.html should both have the latest document listed. In the case of a conflict between the sites use the document with the latest revision tag in its title.

Question: Does it cost to enter Roborama2014a?
Answer: Entry to Roborama2014a events is free to DPRG members and students (at any grade level).  For others, the entry fee is $10. Anyone paying a entry fee can participate in any or all of the events.

Question: How are the “cans” used in Table Top and CanCan Soccer made?
Answer: The cans are standard 12 ounce aluminum soda cans that are primed with white spray paint (Rust-oleum Professional Aluminum Primer – SKU 0 20066 19717 9 or Rust-oleum Painter’ touch – SKU  0 20066 18715 6 ) then painted with Rust-oleum  specialty fluorescent orange spray paint (SKU 0 20066 19548 9). Before painting, the can’s pull tab is removed and the top of the can may be covered with a card stock circle painted insert (for appearances – not required). Currently both paints are available at Home Depot.

Question: In CanCan Soccer what goal must the can pass through for me to score?
Answer: The can must pass through your opponent’s goal.

Question: In CanCan Soccer is my robot allowed to capture more than one can at a time? For example, store cans in a robot mounted rack?
Answer: A robot can only capture one can at a time.  If it captures more than one can, the judge will immediately remove the second can and replace it on the playing field.  In other words, only one can could be placed on the mounted rack and no other can could be captured until the possession of the first can is lost.

Question:  In CanCan Soccer can a robot defend its goal?
Answer: There is nothing in the rules that say a robot can not defend its goal. However, aggressive behavior toward your opponent is not allowed.
For example: 
  • Robot charges opposing robot and attempts to entangle it. – Not allowed
  • Robot patrols in front of its goal without locking on to the opposing robot.  — Allowed
  • Robot sits still in front of goal and acts as an obstacle. – Allowed
  • Robot blocks a can launched towards goal by opponent. – Allowed
In some ways, you can think of defense strategies being like the defensive strategies in basketball.

 

Question:  In CanCan Soccer what does “possession” mean?
Answer: For CanCan Soccer, any can that is physically touching the robot is considered to be in that robot’s possession, unless the other
robot has possession of the can first.  For example, a robot captures a can and is moving to the goal and the other robot entangles the first robot. It also touches the can that the first robot had captured. The second robot does not have possession of the can even though it is touching it, since the first robot already has possession of it.
A robot doesn’t need to possess a target can to score. If a can passes through a goal, a point goes to the robot that is using that goal to score (i.e., not the goal’s owner).  The goal that a robot starts in front of is the goal that it owns.

 

Question: Is it allowed in Tabletop 2 to collect all three cans, for the three regular challenges and the bonus mission?
 Answer:  Yes, the robot can collect the three cans then drop one off the table, one in the box, and take one back to home.  In the bonus mission, the robot could collect all three cans and then lay them back on the table in a line.

 

Question: In the challenge level line following competition when the robot finds the three way gate must the robot continue  to the end of the path that is a dead end or must it first complete the closed loop?
 Answer: The robot must complete the closed loop (i.e., pass the starting line again). It can explore the dead end, return,  and complete the closed loop, but it is not required to go down the dead end.

 

Question:  Looking at last year’s competition video, the layout
diagram of the Table Top 2 competition table in the Rules document looks wrong. What is the actual table layout?
Answer: The diagram was wrong. It will be corrected in the next
version of the Rules document. The correct layout is below:

 

table_top2_table_layout
Question:   For Can Can Soccer are the cans placed in the same locations for all rounds of  the competition?
Answer: The cans are located in the same locations for all rounds of a tier of the tournament. The judge may or may not change the can locations between tiers of the tournament.Question:  For Can Can Soccer are the locations of the cans symmetrical between the halves of the arena?

Answer:  Yes, the cans will be placed in a symmetrical manner within a tolerance of ~4″. The judge can decide to mirror the left to right placement of the cans between the two halves of the arena.

 

Question:  For Can Can Soccer how will the starting locations of the cans be marked on the arena floor?
Answer:  Starting locations will be marked on the arena floor with small squares of blue painter masking tape. The tape marks will be no bigger than 3/4″ X 3/4″. If feasible, smaller pieces of tape will be used.

 

Question:  For Can Can Soccer how will the goals be assigned to competitors for a round?
Answer: Before the round, each competitor will pull either a small numbered token or a US quarter from a box. The competitor who choses the token with the lowest number or the quarter with the oldest date can chose their goal. The goal that they chose will be the goal that their robot starts from. They  will score points by having cans pass the remaining goal (opponent’s goal). All cans will be placed on the arena floor before goal selection occurs.

 

Question:   For Can Can Soccer, will the goals be switched during the contest to remove bias from any lighting variance?
Answer:   No. However the arena will be set in the best location available to minimize lighting differences. Last year, the arena was setup away from the windows and by a low wall. Lighting differences were not that uneven. This area is not visible in the photo shown in the rules document. View the video from last year on DPRG’s YouTube channel to see the differences that most likely exist.