package ch.epfl.maze.physical.stragegies.reducer;

import ch.epfl.maze.util.Direction;

import java.util.Set;

/**
 * A filter removing the possibility to go backward.
 *
 * @author Pacien TRAN-GIRARD
 */
public interface BackwardReducer extends BlindChoiceReducer {

    Direction getDirection();

    @Override
    default Set<Direction> reduce(Set<Direction> choices) {
        choices.remove(this.getDirection().reverse());
        return choices;
    }

}