public IAmTheGameOver Play()
{
Players = _distributor.Distribute();
Player winner = null;
int iterations = 0;
int iterationsAfterReShuffle = 0;
bool reShuffled = false;
while (!GameOver(ref winner))
{
if (ShouldContinue(ref iterations, ref iterationsAfterReShuffle, ref reShuffled, out IAmTheGameOver draw))
{
continue;
}
if (draw is Draw)
{
return(draw);
}
var takes = Players.TakeOneCardEach(Visibility.FaceUp);
TableViewsHistory.Add(takes.BuildView());
var playerOfStrongestTake = takes.UniqueStrongestPlayerIfExit();
if (playerOfStrongestTake != null)
{
playerOfStrongestTake.Gather(takes);
continue;
}
RunBattleIfNecessary(takes);
BuildDroppedCards(takes);
}
if (winner == null)
{
return(Draw.Instance);
}
System.Diagnostics.Debug.Assert(winner.CardStack.Size + DroppedCards.Count == _distributor.DistributedCardsSize, "We have leaking cards here");
return(new HasWinner(winner));
}
private void RunBattleIfNecessary(List <Take> takes)
{
var numberOfPlayersInTheGame = takes.Count;
var competitors = new List <Player>();
while (NeedBattle(takes.KeepTheLast(numberOfPlayersInTheGame), ref competitors))
{
numberOfPlayersInTheGame = competitors.Count;
var competitorsStillHavingCards = competitors.WhoHaveCards();
if (competitorsStillHavingCards.Length <= 1)
{
takes.Drop();
}
if (competitorsStillHavingCards.Length == 1)
{
break;
}
// face down cards
var faceDownTakes = competitors.TakeOneCardEach(Visibility.FaceDown);
if (!faceDownTakes.Any())
{
break;
}
TableViewsHistory.Add(faceDownTakes.BuildView());
takes.AddRange(faceDownTakes);
// face up cards
var faceUpTakes = competitors.TakeOneCardEach(Visibility.FaceUp);
if (!faceUpTakes.Any())
{
takes.Drop();
break;
}
if (faceUpTakes.Count == 1)
{
takes.Drop();
faceUpTakes[0].Player.Gather(faceUpTakes);
break;
}
TableViewsHistory.Add(faceUpTakes.BuildView());
takes.AddRange(faceUpTakes);
if (faceUpTakes.AllEqual())
{
continue;
}
// Find the competitor having the strongest card, and only he has that card
var strongestPlayer = faceUpTakes.UniqueStrongestPlayerIfExit();
if (strongestPlayer != null)
{
strongestPlayer.Gather(takes.Where(x => !x.Dropped));
break;
}
}
}
