public void Validate(PlayedCards activeCards)
{
if (activeCards == null || activeCards[0] == null || this[0] == null)
{
return;
}
if (activeCards.Count != this.Count)
{
throw new InvalidHandException(this, "You must play the same number of cards.");
}
if (this.Count == 1)
{
// Validate single card hand
var nextCard = this[0];
var activeCard = activeCards[0];
if (nextCard.GameValue < activeCard.GameValue)
{
throw new InvalidHandException(this, "Cannot play a card of lesser value.");
}
if (nextCard.GameValue == activeCard.GameValue && nextCard.Suit < activeCard.Suit)
{
throw new InvalidHandException(this, "Cannot play an equal value card of a lesser suit.");
}
}
// todo: validate poker style hands
}
public void Start()
{
GameStarted.Raise(this, new BigTwoEventArgs());
DealHands();
var activePlayerIndex = 0;
PlayedCards activeCards = null;
// while all players have at least one card the game continues
while (players.All(p => p.CardCount > 0))
{
IPlayer activePlayer = players[activePlayerIndex];
PlayerTurnStart.Raise(this, new BigTwoPlayerEventArgs(activePlayer));
// If the active cards belong to the active player, It means that
// all other players have passed meaning this player has won the sequence.
if (activeCards != null && activePlayer == activeCards.Player)
{
// clear the active card to start a new sequence.
SequenceCompleted.Raise(this, new BigTwoPlayerEventArgs(activeCards.Player));
activeCards = null;
}
PlayedCards nextCards = activePlayer.PlayTurn(activeCards);
PlayerPlayedTurn.Raise(this, new BigTwoPlayerHandEventArgs(activePlayer, nextCards));
// null is a passed turn
if (nextCards != null)
{
// Ensure the cards the player is trying to play are valid
nextCards.Validate(activeCards);
activeCards = nextCards;
// Remove the played cards from the players hand
activePlayer.RemoveCards(nextCards);
}
// Advance to next player
activePlayerIndex++;
if (activePlayerIndex >= players.Count)
{
activePlayerIndex = 0;
}
PlayerTurnEnd.Raise(this, new BigTwoPlayerEventArgs(activePlayer));
}
// Get the winner and notify everyone that the game is over!
IPlayer winner = players.Single(p => p.CardCount == 0);
GameCompleted.Raise(this, new BigTwoPlayerEventArgs(winner));
}
public BigTwoPlayerHandEventArgs(IPlayer activePlayer, PlayedCards nextCards) : base(activePlayer)
{
PlayedCards = nextCards;
}
