public int PlayRound()
{
Console.WriteLine($"Playing round {RoundId} of game {GameId}");
RoundId++;
int roundWinner = 0;
if (Finished)
{
return(roundWinner);
}
if (RecursiveCheck())
{
//the game instantly ends in a win for player 1
Finished = true;
return(1);
}
var player1Card = Player1Deck.Draw();
var player2Card = Player2Deck.Draw();
//If both players have at least as many cards remaining in their deck as the value of the card they just drew,
//the winner of the round is determined by playing a new game of Recursive Combat (see below).
if (player1Card <= Player1Deck.Count && player2Card <= Player2Deck.Count)
{
var innerGame = new RecursiveCombatGame(Player1Deck.CopyOfDeck(player1Card), Player2Deck.CopyOfDeck(player2Card), GameId + 1);
var winnerInner = innerGame.PlayGame();
if (winnerInner == 1)
{
Player1Deck.Return(player1Card, player2Card);
roundWinner = 1;
}
else
{
Player2Deck.Return(player2Card, player1Card);
roundWinner = 2;
}
}
else
{
//at least one player must not have enough cards left in their deck to recurse; the winner of the round is the player with the higher-value card
if (player1Card > player2Card)
{
Player1Deck.Return(player1Card, player2Card);
roundWinner = 1;
}
else
{
Player2Deck.Return(player2Card, player1Card);
roundWinner = 2;
}
}
if (Player1Deck.Count == 0 || Player2Deck.Count == 0)
{
Finished = true;
}
return(roundWinner);
}
private bool RecursiveCheck()
{
//Before either player deals a card, if there was a previous round in this game that had exactly the same cards in the same order in the same players' decks
var player1Cards = string.Join("-", Player1Deck.CopyOfDeck());
if (Player1History.Contains(player1Cards))
{
return(true);
}
var player2Cards = string.Join("-", Player2Deck.CopyOfDeck());
if (Player2History.Contains(player2Cards))
{
return(true);
}
Player1History.Add(player1Cards);
Player2History.Add(player2Cards);
return(false);
}