Add the interactive maze API and implement the solver - #2
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Promote the interactive robot API into the library for real, so the lesson
site no longer needs its temporary maze-engine shim:
- Direction becomes an enum { UP, DOWN, LEFT, RIGHT } (same N/S/E/W bit
values) with bit()/opposite()/clockwise()/counterClockwise().
- Add the Robot/Maze/Cell interfaces and concrete GridMaze/GridRobot/GridCell.
The robot API is sensor/drivetrain-shaped: readWallSensor(Direction) (true =
wall), drive(Direction) (no-op into a wall), and facing(), which the robot
auto-updates on each successful drive.
- Implement DefaultMazeSolver.solve() as a breadth-first search (shortest path).
- Update CONTRACT.md with the interactive API and the UP/DOWN/LEFT/RIGHT naming.
- Tests: 11 green under --release 8.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
# Conflicts: # CONTRACT.md # src/main/java/com/frc2713/mazesolver/Cell.java # src/main/java/com/frc2713/mazesolver/DefaultMazeSolver.java # src/main/java/com/frc2713/mazesolver/Maze.java # src/main/java/com/frc2713/mazesolver/MazeSolver.java # src/main/java/com/frc2713/mazesolver/Robot.java
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Promotes the interactive robot API into the library for real, so the lesson site (
FRC2713/software_training) no longer needs its temporarymaze-engine.jarshim. Pairs with software_training PR #21.What's here
Directionis now anenum { UP, DOWN, LEFT, RIGHT }(same N/S/E/W bit values as before) withbit(),opposite(),clockwise(),counterClockwise().Robot/Maze/Cellinterfaces + concreteGridMaze/GridRobot/GridCell, moved out of the site's shim. The robot API is sensor/drivetrain-shaped:readWallSensor(Direction)—trueif that side is a walldrive(Direction)— move one cell; a no-op into a wallfacing()— the direction of the last drive, auto-updated bydrive()DefaultMazeSolver.solve()implemented as a breadth-first search (returns the shortest path, orint[0][]if unreachable).CONTRACT.mdupdated with the interactive API and theUP/DOWN/LEFT/RIGHTnaming.Testing
mvn -B test— 11/11 green, built under--release 8(CheerpJ / OpenJDK 8).The software_training Pages deploy rebuilds this library from
mainon every deploy, so this must merge before the maze-module change reaches software_training'smain— otherwise the deployed site compiles its new lesson snippets against a jar without this API.🤖 Generated with Claude Code