internal JumpLink(Square from, Square via, Square to)
: base(from, to)
{
if (!from.IsAdjacentTo(via) || !to.IsAdjacentTo(via))
{
throw new InvalidOperationException("Squares should be adjacent.");
}
_via = via;
}
private MoveResult GetMoveResult(Square from, Square to)
{
if (from.IsAdjacentTo(to))
{
return GetMoveResult(from, from.Links.Single(l => l.LinkedSquare(from) == to));
}
throw new InvalidOperationException("Jump cases should go via links.");
}