SPlayer.java

// Server internal representation of a player 

class SPlayer {
    protected boolean done = false;
    protected int sum = 0; /* <= 21 */
    private IPlayer player;

    SPlayer(IPlayer player) { this.player = player; }

    // ------------------------------------------------------------------

    // allow player to take a turn
    public boolean turn(Turn t) {
    	if (!done) {
			player.turn(t);
		}
		return done;
    }

    // add in result to sum and make sure it's not over 21 
    // pre: !done
    public void record(int /* 1 .. 6 */ result) {
		if (done)
			sum = 0; 
		else
			sum += result; 

		if (21 == sum) 
			done = true; 
		else if (21 < sum) {
			done = true; 
			sum = 0;
		};
    }

    // record the player's attempt to cheat 
    public void cheat() {
		done = true; 
		sum = 0; 
		player.inform("You cheated. You're out."); 
    }
    
    public String name() {
		return player.name(); 
    }
    
    public void inform(String s) {
		player.inform(s); 
    }

    public IPlayer getPlayer() {
    	return player;
    }
    
    // ------------------------------------------------------------------
    // Examples: 
    static MPlayer m1;
    static SPlayer s1;

    static public void createExamples() {
		if (m1 == null) {
			m1 = new MPlayer("machine play for test of splayer");
			s1 = new SPlayer(m1);
		} 
    }

    // ------------------------------------------------------------------
    // Test

    public static void main(String argv[]) {
		createExamples();

		m1.registerDisplay(TestIDisplay.testIDisplay);

		s1.record(6);
		Tester.check(s1.sum == 6,"record 6"); 

		s1.record(3);
		Tester.check(s1.sum == 9,"record 9");

		s1.record(6);
		s1.record(6);
		Tester.check(s1.done,"done 21"); 

		// calling record in improper context 
		s1.record(3); 
		Tester.check(s1.sum == 0,"done 21"); 

		s1.cheat(); 
		Tester.check(s1.done,"cheat 1"); 
		Tester.check(s1.sum == 0,"cheat 2"); 
    }

}