public Side getOppositeSide() {
            switch (this) {
                case WSW:
                    return ESE;
                case WNW:
                    return ENE;
                case NNW:
                    return SSW;
                case NNE:
                    return SSE;
                case ENE:
                    return WNW;
                case ESE:
                    return WSW;
                case SSE:
                    return NNE;
                case SSW:
                    return NNW;
            }
            return null;
        }