direction.hpp

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#ifndef __directionpp__
#define __directionpp__

enum Direction { FORWARD, BACKWARD, LEFT, RIGHT, };

class nav {
public:
    static Direction opposite(Direction d) {
        switch(d) {
        case FORWARD: return BACKWARD;
        case BACKWARD: return FORWARD;
        case LEFT: return RIGHT;
        case RIGHT: return LEFT;
        }
    }
};

#endif