Player.java

Below is the syntax highlighted version of Player.java from §3.5 Inheritance.

/******************************************************************************
 *  Compilation:  javac Player.java
 *  Execution:    java -cp .:cards.jar Player
 *  Dependencies: Card.java
 *
 *  Implement a player that holds a pile of cards.
 *
 *  % java Player
 *  North  7C 6D JS
 *
 ******************************************************************************/

public class Player {
    final static int MAX_CARDS = 52;

    private Card[] cards;         // the cards
    private int N;                // number of cards
    private int x, y;             // location to draw piles
    private String name;          // player's name

    public Player(String name, int x, int y)  {
        this.name  = name;
        this.x     = x;
        this.y     = y;
        this.N     = 0;
        this.cards = new Card[MAX_CARDS];
    }

    public void dealTo(Card c) { cards[N++] = c;   }

    // insertion sort cards in descending order
    public void sort() {
        for (int i = 0; i < N; i++) {
            for (int j = i; j > 0; j--) {
                if (cards[j-1].less(cards[j])) {
                    Card swap = cards[j];
                    cards[j] = cards[j-1];
                    cards[j-1] = swap;
                }
            }
        }
    }


    // draw the pile of cards, with the first one centered at (x, y)
    public void draw() {
        for (int i = 0; i < N; i++) {
            // 17 seems like a good intercard distance
            cards[i].drawFront(x + i*17, y);
        }
    }

    public String toString() {
        String s = name + "  ";
        for (int i = 0; i < N; i++)
            s = s + cards[i] + " ";
        return s;
    }


    // calculate points in a bridge hand
    public int points() {
        int sum = 0;

        // calculate high card points (Ace = 4, King = 3, Queen = 2, Jack = 1)
        for (int i = 0; i < N; i++) {
            int rank = cards[i].rank();
            if      (rank == 12) sum = sum + 4;
            else if (rank == 11) sum = sum + 3;
            else if (rank == 10) sum = sum + 2;
            else if (rank ==  9) sum = sum + 1;
        }

        // calculate points for suits with 0 or 1 card
        int[] suits = new int[4];
        for (int i = 0; i < N; i++)
            suits[cards[i].suit()]++;
        for (int j = 0; j < 4; j++) {
            if      (suits[j] == 0) sum = sum + 2;
            else if (suits[j] == 1) sum = sum + 1;
        }
        return sum;
    }



    // test client
    public static void main(String[] args) {

        Player N = new Player("North", 375, 650);
        N.dealTo(new Card(17));
        N.dealTo(new Card(5));
        N.dealTo(new Card(48));

        // sort by suit, and then rank
        N.sort();
        StdOut.println(N);
    }

}