private Square NextSquare(Square from, Direction direction, int distance = 1)
{
int file = (int)from.File;
int rank = from.Rank;
switch (direction)
{
case Direction.Up:
rank += distance;
break;
case Direction.Down:
rank -= distance;
break;
case Direction.Left:
file -= distance;
break;
case Direction.Right:
file += distance;
break;
case Direction.UpperLeft:
rank += distance;
file -= distance;
break;
case Direction.UpperRight:
rank += distance;
file += distance;
break;
case Direction.LowerLeft:
rank -= distance;
file -= distance;
break;
case Direction.LowerRight:
rank -= distance;
file += distance;
break;
default:
return(null);
}
if (rank > Board.Size || rank < 0 || file > Board.Size || file < 0)
{
return(null);
}
return(Board[Square.GetId((File)file, rank)]);
}
