/// <summary>
/// Prints the field to Console.Out
/// </summary>
public void DumpToConsole()
{
var toprow = FinishStacks.Cast<CardStack>()
.Concat(new[] { Stock });
DumpRows(toprow);
DumpRows(PlayStacks.ToArray());
}
private bool IsSafeToPlay(Card card)
{ // this move does never block a solution since it
// cannot block another card:
// all cards that can go on top of this card,
// can also enter their finish stack.
if (card.Value == Value.Ace) return true;
return FinishStacks.Select(f => GetValue(f.Top)).All(
value => value >= GetValue(card) - 2);
}
public PatienceField DoTrivialMoves()
{
// Try the tops of the playstacks
foreach (var stack in PlayStacks)
{
if (stack.Count == 0) continue;
var card = stack.Top;
if (IsSafeToPlay(card))
{
foreach (var dest in FinishStacks.Where(s => s.CanAccept(card, stack)))
{
return Move(card, stack, dest).DoTrivialMoves();
}
}
}
// Try all stock cards
foreach (var stockcard in Stock.Where(IsSafeToPlay))
foreach (var dest in FinishStacks.Where(s => s.CanAccept(stockcard, Stock)))
{
return Move(stockcard, Stock, dest).DoTrivialMoves();
}
return this;
}
/// <summary>
/// Gets valid destination stacks, from least to most likely to lead to a solution
/// </summary>
/// <returns></returns>
public IEnumerable<CardStack> GetDestinationStacks()
{
return PlayStacks.Cast<CardStack>()
.Concat(FinishStacks.Cast<CardStack>());
}
