Tableau Piles

public class TablePile : CardPile {
	public TablePile (int x, int y, int c) : base(x, y) {
		// initialize our pile of cards
		for(int i = 0; i < c; i++ ) {
			addCard(Game.deckPile().pop);
		}	
		top.flip();
	}

	public override bool canTake (PlayingCard aCard ) {
		if( isEmpty ) { return(aCard.rank == 12); }
		PlayingCard topCard = top;
		return( ( aCard.color != topCard.color ) &&
			( aCard.rank    == topCard.rank - 1 ) );
	}

	public override bool includes (int tx, int ty) {
		return( ( x <= tx ) && ( tx <= x + CardView.Width ) &&
				( y <= ty ) );
	}

	public override void select (int tx, int ty) {
		if( isEmpty ) { return; }
		// if face down, then flip
		PlayingCard topCard = top;
		if( ! topCard.isFaceUp ) {
			topCard.flip();
			return;
		}
		// else see if any suit pile can take card
		topCard = pop;
		for(int i = 0; i < 4; i++ ) {
			if( Game.suitPile(i).canTake( topCard ) ) {
				Game.suitPile(i).addCard( topCard );
				return;
			}
		}
		// else see if any other table pile can take card
		for(int i = 0; i < 7; i++ ) {
			if( Game.tableau(i).canTake( topCard ) ) {
				Game.tableau(i).addCard( topCard );
				return;
			}
		}
		addCard( topCard );
	}

	public override void display (CardView cv) {
		Object [ ] cardArray = pile.ToArray();
		int size = pile.Count;
		int hs = CardView.Height / 2; // half size
		int ty = y;
		for (int i = pile.Count - 1; i >= 0; i--) {
			cv.display((PlayingCard) cardArray[i], x, ty);
			ty += hs;
		}
	}
}