using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace RobotAndDonkey.Game.Utils;


public static class DirectionExtensions
{
    public static EDirection Opposite(this EDirection d) => Modify(d, 3);
    public static EDirection RotateLeft(this EDirection d) => Modify(d, 1);
    public static EDirection RotateRight(this EDirection d) => Modify(d, 5);

    public static EDirection Modify(EDirection direction, int delta)
    {
        var i = (int)direction;
        i += delta;
        i %= 6;
        if (i < 0)
            i += 6;
        return (EDirection)i;
    }
}