2025 Game: Reefscape

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2025 Game: Reefscape

Check out this year’s game video!

Robot Name: Gregalodon

Named after our mentor Greg Klein

Field and Scoring

Reefscape is played on a 27 feet (8.2 m) by 54 feet (16 m) field covered in grey carpet. The field is surrounded by low polycarbonate walls on the long sides and taller alliance station walls on the short sides. The two Algae Processors on the long sides are also protected by a wall made of plastic mesh.

The field is divided in half by the Barge truss, with each half including an alliance’s Reef and Processor. The Barge includes each alliance’s Net and six Cages, three for each alliance. Alliances work to score Coral on their Reef, located at the center of their side of the field. Alliances can also score by retrieving Algae from their Reef and scoring them on their Barge. Algae can also be scored in the Processor for the opposing alliance’s human player to place in the Barge.

Game Pieces

There are two game pieces in Reefscape: Coral and Algae. Coral are 4 inches (100 mm) diameter COTS PVC pipes with a length of 11.875 inches (301.6 mm). Algae are custom-produced green rubber playground balls with a diameter of 16 inches (410 mm). Robots can carry a maximum of one of each game piece at a time during a match.

Player Areas

Alliance Stations

There are two alliance stations on the short sides of the field, one for each alliance. Each station is divided into three smaller driver’s stations where the teams that make up the alliance control their robots. In addition to the standard e-stop button, each driver’s station includes an autonomous stop (a-stop) that can be used to stop a robot during the autonomous period. Once the autonomous period ends, the a-stop expires and returns control of the robot to the team.

Human Player Stations

The only type of human player station in Reefscape in the Coral Station. The four stations (two per alliance) are located at the corners of the field and are used to introduce Coral into the field. Robots can navigate to the stations using an AprilTag mounted at the top middle of each station. Additionally, while the Processors are not fully classified as human player stations, human players can be stationed at them to score processed Algae into the Nets.

Scoring Areas

Reefs

The two Reefs (one per alliance) are hexagonal structures located at the center of their alliance’s side of the field, 12 feet (3.7 m) from the alliance station wall. Each Reef has 12 vertical pipes extending 6 feet (1.8 m) from the field carpet with three sets of Branches where Coral can be scored. Coral can also be scored in six slanted troughs located at the base of each Reef.

The first set of Branches extends to 2.875 feet (0.876 m) above the carpet and are angled up at 35 degrees. The second and third sets extend to 3.969 feet (1.210 m) and 6 feet (1.8 m) respectively, with the second set angled up at 35 degrees and the third set vertical to the carpet.

Barge

The Barge is a metal truss structure that supports the two Nets and six Cages. It is 29.17 feet (8.89 m) wide, 3.67 feet (1.12 m) deep, and 8.42 feet (2.57 m) tall and is supported by two legs just outside of the field wall. The truss structure that supports the Nets is 5.17 feet (1.58 m) above the field carpet.

Nets

The two Nets (one per alliance) are suspended from the top of the Barge and are made of knit polyester mesh with a sewn cord border. Each Net is 4 feet (1.2 m) wide by 12 feet (3.7 m) long and is suspended so the lowest point is 6.34 feet (1.93 m) above the field carpet.

Cages

The seven Cages (three per alliance) are 2 feet (0.61 m) ft tall by 7.38 inches (187 mm) wide rectangular structures made of welded metal. The Cages are hung from the Barge truss by metal chains in two different positions based on the strategy of each alliance. The deep position is the default and is 2.45 feet (0.75 m) from the field carpet. On the other hand, the shallow position is 3.5 inches (89 mm) from the carpet. The Cages are left in their existing position following each match unless an alliance requests changes to the positions of their Cages.

Processors

The two Processors (one per alliance) are integrated into the long sides of the field wall near the legs of the Barge truss. Algae scored into an alliance’s Processor can be scored into the opposing alliance’s Net by that alliance’s human player.