solitaire games codes

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Can you please tell me what the codes bellow mean in Card class of the solitaire game:

C++

deck.pile.remove (this);
    deck = value;
    deck.add(this); 
  
    if (DeckChanged != null)
        DeckChanged(this, null);
}

Here is the deck class

public class Card
   {
       public static boolean IsAceBiggest = true;

      private char rank;
       private String suit;
        public String Color;

        public String NumberString()
       {
               switch (rank)
               {
                   case 'A':
                       return "Ace";

                   case 'J':
                       return "Jack";

                   case 'Q':
                       return "Queen";

                   case 'K':
                       return "King";


                   default:
                       return ""+rank;
               }
           }

       private DeckPile deck;
       public DeckPile Deck()
       {
               if (deck.Game != value.Game)
                   throw new InvalidOperationException("The new deck must be in the same game like the old deck of the card.");

               if (deck != value)
               {
                   deck.pile.remove(this);
                   deck = value;
                   deck.add(this);

                   if (DeckChanged != null)
                       DeckChanged(this, null);
               }
       }

       private boolean visible = true;
       public boolean Visible
       {
           get
           {
               return visible;
           }
           set
           {
               if (visible != value)
               {
                   visible = value;

                   if (VisibleChanged != null)
                       VisibleChanged(this, null);
               }
           }
       }

       private boolean enabled = true;
       public boolean Enabled
       {
           get
           {
               return enabled;
           }
           set
           {
               enabled = value;
           }
       }

       private boolean isDragable = true;

       public boolean IsDragable
       {
          get { return isDragable; }
           set { isDragable = value; }
       }

       public Card(CardRank rank, CardSuit suit, Deck deck)
       {
           this.rank = rank;
           this.suit = suit;
           this.deck = deck;
           this.deck.Game.Cards.Add(this);
       }

       public Card(int number, CardSuit suit, Deck deck)
       {
           this.rank = (CardRank)number;
           this.suit = suit;
           this.deck = deck;
           this.deck.Game.Cards.Add(this);
       }

       public int CompareTo(Card other)
       {
           int value1 = this.Number;
           int value2 = other.Number;

           if(Card.IsAceBiggest)
           {
           if (value1 == 1)
               value1 = 14;

           if (value2 == 1)
               value2 = 14;
           }

           if (value1 > value2)
               return 1;
           else if (value1 < value2)
              return -1;
           else
               return 0;
       }

      public void MoveToFirst()
       {
           MoveToIndex(0);
       }

       public void MoveToLast()
       {
           MoveToIndex(Deck.Cards.Count);
       }

       public void Shuffle()
       {
           MoveToIndex(Deck.Game.random.Next(0, Deck.Cards.Count));
       }

       public void MoveToIndex(int index)
       {
           Deck.Cards.Remove(this);
           Deck.Cards.Insert(index, this);
       }


       public override string ToString()
       {
          return this.NumberString + " of " + this.Suit.ToString();
       }

   }

Posted 13-Mar-12 23:40pm

mpondu

Updated 14-Mar-12 0:52am

Keith Barrow

v4

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Comments

Chandrasekharan P 14-Mar-12 5:55am

How do we know how the card class looks like?? Was there no explanation in the site where you got this code?

Keith Barrow 14-Mar-12 6:51am

[Transferred from OP - not my reply]
Yes because it relates to codes of classes created such as CardPile and Solitaire built on Eclipse Java

Keith Barrow 14-Mar-12 6:46am

I have formatted your code: please do this in future as it makes the question easier to read and an answer more likely!

Keith Barrow 14-Mar-12 7:04am

Can you confirm: The code you have posted looks like c#, you said the question was in c++ before I edited it and you have commented that you are using Java. Which language are you using? Are you tranferring from one language to another?

mpondu 20-Mar-12 9:33am

yes i have converted it from c# into java codes

Keith Barrow 21-Mar-12 3:43am

In that case, my answer below tells you what the code does. Hope it helps!

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Keith Barrow · Answer 1 · 2012-03-14T00:16:00

It removes the current card from its current deck to a different deck, passed as value. It then *looks* like it raises some Deckchanged event. What value is I don't know (See below), it makes sense if looks like the Deck() method is made into a property (which it probably should be):

C#

public DeckPile Deck
          {
get {return deck;}
set
{
        if (deck.Game != value.Game)
            throw new InvalidOperationException("The new deck must be in the same game like the old deck of the card.");

        if (deck != value)
        {
            deck.pile.remove(this);
            deck = value;
            deck.add(this);

            if (DeckChanged != null)
                DeckChanged(this, null);
        }
    }
}

The other thing is that the class os poorly designed: the move/shuffle methods properly belong in the Deck AFAICT. You also probably need a class that manages the game, looking after the various stacks/decks.