Robotics Education & Competition Foundation
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The Q&A is closed for the 2021-2022 season. Any rule changes or clarifications pertaining to the 2022 VEX Robotics World Championship will be included in the April 5 Game Manual Update. Teams attending VEX Worlds who wish to pre-submit questions for the driver's meeting should have received a contact form via email; if not, please contact your REC Foundation Team Engagement Manager for more information.

Official Q&A: VRC 2021-2022: Tipping Point

Usage Guidelines All Questions

826: G19 Mobile Goal Placement


Nathan Nolte (Event Partner)
22-Jul-2021

G19 references object placement and variances on the field. The field assembly instructions show mobile goal placement, and I understand orientation of the mobile goals is intended to be specific, especially with regards to the orientation of the vision sensor targets.

Since the mobile goals have a seven-sided base, they have two orientations that they could be placed on the field that would work, still allow the vision sensor targets to be pointing in the correct direction. My questions is do the mobile goals need to be placed exactly as shown in the field assembly instructions, or would it be acceptable for the orientation of the bases to be random, as long as the vision sensor targets are still pointing in the appropriate directions? I have created an annotated image to illustrate what I am asking: img The rationale behind the question is that I want to know how diligent we need to be with field resets at events, or will it be sufficient to ensure that the mobile goals are arranged in one of the two orientations that align the vision sensor targets with the correct directions.

Answered by committee

Edit 2021-12-07: The v2.2 Game Manual update included the following “red box” addition to rule <G19>. We sincerely apologize for any inconvenience and confusion caused by this inconsistency.

Prior to version 2.2 of the Game Manual (released December 2021), there have been conflicting interpretations of the correct Mobile Goal rotation in the official game documentation. The layout defined in Figure 20 above, and Appendix A, in version 2.2 (or later) of the Game Manual is the only correct variation. This layout takes precedent over any other variations found elsewhere, such as other figures, websites, videos, etc that were created prior to December 2021.

Here are some ways to visualize the correct orientation, using the V-shaped vision target as the “front” of the heptagon, and the rectangular vision target as the “back” of the heptagon:

• The Alliance Mobile Goals that rest on the Platforms are “pointing towards” their respective Platform

• The Alliance Mobile Goals that begin on the AWP Line are “pointing towards” the Neutral Zone

• The outer two Neutral Mobile Goals are ”pointing towards” the field perimeter walls

• The center Neutral Mobile Goal is “pointing up”, when viewed from the audience perspective, or “pointing left” when viewed from the red Alliance Station