package se.urmo.game.util;

public enum Direction {
    RIGHT(1, 0),
    LEFT(-1, 0),
    DOWN(0, 1),
    UP(0, -1),
    NONE(0, 0);

    public final int dx;
    public final int dy;

    Direction(int dx, int dy) {
        this.dx = dx;
        this.dy = dy;
    }

    public Direction opposite() {
        switch (this) {
            case RIGHT: return LEFT;
            case LEFT:  return RIGHT;
            case DOWN:  return UP;
            case UP:    return DOWN;
            default:    return NONE;
        }
    }
}