public static int Distance(Hex a, Hex b)
{
return(Length(a - b));
}
public static Hex Neighbour(Hex a, int direction)
{
direction %= directions.Length;
return(a + directions[direction]);
}
public static int Length(Hex a)
{
return((Math.Abs(a.Q) + Math.Abs(a.R) + Math.Abs(a.S)) / 2);
}