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Thread: Craps- GAME fine tunning.

  1. #1
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    Default Craps- GAME fine tunning.

    How come my cancel button does not work when the user is asked to place a bet and he hits the cancel button?
    if the user hits the cancel button how do i make it end the round and end the game (terminate program)?
    the code in question is highlighted in red font and I am also open to any suggestions that might make my program better
    package craps;
     
    /*
     * @author Beaney
     */
     
    import javax.swing.*;
    import java.util.Random;
     
    public class Craps 
    {
        //create random number generator for use in method rolldice
        private static final Random randomNumbers = new Random();
     
        //enumeration with constants that represent the game status
        private enum Status { CONTINUE, WON, LOST };
     
        //constants that represent common rolls of the dice
        private static final int SNAKE_EYES = 2;
        private static final int TREY = 3; 
        private static final int SEVEN = 7;
        private static final int YO_LEVEN = 11;
        private static final int BOX_CARS = 12;
     
        //Continue Option
        private static int option;
     
        //game statistics
        private static int bank = 500;
        private static int lost = 0 ;
        private static int won = 0 ;
        private static int myPoint = 0;//point if no win or loss on first roll
     
        //plays many rounds of craps
        public static void main(String[] args) 
        {        
            Status gameStatus; // can contain CONTINUE, WON or LOST
     
            //Game Rules
            JOptionPane.showMessageDialog(null,"GAME RULES:\n\nYou roll two dice." +
                    " Each die has six faces, which contain one, two, three, four" +
                    "," + " five, and \nsix spots, respectively. After the dice " +
                    "have come" + " to rest, the sum of the spots on the two " +
                    "\nupward faces is " + "calculated. If the sum is 7 or 11 on " +
                    "the first throw, you win." + " If the sum \nis 2, 3 or 12 on" +
                    " the first throw (called " + "\"craps\"), you lose (i.e., " +
                    "the \"house\" wins). If the \nsum is " + "4, 5, 6, 8, 9, or " +
                    "10 on the first throw, that sum becomes your" +
                    " \"point.\" To win, \nyou must continue rolling the dice " +
                    "until" + " you \"make your point\" (i.e., roll that same " +
                    "\npoint value). " + "You lose by rolling a 7 before making " +
                    "your point.");
     
            //game continues until user enters NO option
            while (option == JOptionPane.YES_OPTION) //first while loop
            {
                boolean cont = true;//continue playing rounds till user selects no
                while ( cont )//second while loop
                {
                [COLOR="Red"]//enter bet and display players starting bank roll
                String betString = JOptionPane.showInputDialog("Enter Bet: Your " +
                    "Starting Bank has " + bank + " Dollars!!!!!!");
                int bet = Integer.parseInt(betString);
                //if ( betString == JOptionPane.CANCEL_OPTION)[/COLOR]
     
            int sumOfDice = rollDice();//first roll of the dice
     
            //determine game status and point based on first roll 
            switch (sumOfDice)
            {
                case SEVEN: // win with 7 on first roll
                case YO_LEVEN: //win with 11 on first roll
                    JOptionPane.showMessageDialog(null, "You rolled: " + sumOfDice);
                    gameStatus = Status.WON;                
                    break;
                case SNAKE_EYES://lose with 2 on first roll
                case TREY: // lose with 3 on first roll
                case BOX_CARS: //lose with 12 on first roll
                    JOptionPane.showMessageDialog(null, "You rolled: " + sumOfDice);
                    gameStatus = Status.LOST;                
                    break;
                default://did not win or lose, so remember point
                    gameStatus = Status.CONTINUE;//game is not over
                    myPoint = sumOfDice;//remember this point
                    JOptionPane.showMessageDialog(null, "Point is " + myPoint 
                            + "\nKeep Rolling " +
                            "until the same point value is obtained, okay?");
                    break;//optional at end of switch
            }//end of switch
     
            // while game is not complete
            while ( gameStatus == Status.CONTINUE )// not won or lost...point
            {                       
                    sumOfDice = rollDice(); //roll dice again
                    JOptionPane.showMessageDialog(null,"Sum of Dice is: "
                            + sumOfDice + "\nPoint is " + myPoint );
     
                //display a message in between rolls where neither point or loss
                //were achieved
                if ( sumOfDice != myPoint && sumOfDice != SEVEN)
                {
                  JOptionPane.showMessageDialog(null,"Keep Rolling! Your on FIRE!");
                }
     
                //determine game status
                if ( sumOfDice == myPoint )// win by making point
                    gameStatus = Status.WON;
                else 
                    if ( sumOfDice == SEVEN )//lose by rolling 7 before point
                        gameStatus = Status.LOST;
     
            }//end third while
     
            //display won or lost message
            if ( gameStatus == Status.WON )
            {
                //System.out.print( "Player wins" );
                won += bet;//increment winning amount
                bank += bet;//increment bank amount
     
                //display winning message along with round stats
                JOptionPane.showMessageDialog(null,"Player wins \nPlayer rolled: " +
                        sumOfDice + "\nPoint was: " + myPoint +
                        "\nMoney won: " + won + "\nMoney lost: " +
                        lost + "\nNew Bank Total: " + bank);
            }//end if
            else
            {
     
                lost += bet;//increment lost amount
                bank -= bet;//decrement bank amount
     
                //display losing message along with round stats
                JOptionPane.showMessageDialog(null,"Player loses \nPlayer " +
                        "rolled: " + sumOfDice + "\nPoint was: " + myPoint +
                        "\nMoney won: " + won + "\nMoney lost: " +
                        lost + "\nNew Bank Total: " + bank);
            }//end else
     
            //ask user if they want to play another round
            option = JOptionPane.showConfirmDialog(null, "Play Another Round?");
     
            //if user answers no
            if ( (option == JOptionPane.NO_OPTION) ||
                    (option == JOptionPane.CANCEL_OPTION))
            {
                //displays final stats for that round
                JOptionPane.showMessageDialog(null, "FINAL STATS FOR THIS ROUND: " +
                    "\nMoney Won: " + won + "\nMoney lost: " + lost +
                    "\nNew Bank Total: " + bank);
     
                //break out of second while loop
                cont = false;
     
            }//end if
                }//end second while
     
            //ask user if they want to continue playing game
            option = JOptionPane.showConfirmDialog(null, "continue playing game?");
     
            //if user does not want to play anyfurther display final game stats and
            //exit
            if ( (option == JOptionPane.NO_OPTION) ||
                    (option == JOptionPane.CANCEL_OPTION))
     
            JOptionPane.showMessageDialog(null, "FINAL Game STATS: \nMoney Won: "
                    + won + "\nMoney lost: " + lost + "\nNew Bank Total: " + bank +
                    "\n THANK YOU FOR PLAYING!!!");
            }//end first while
     
        }//end main
     
        //roll dice, calculate sum and display results
        public static int rollDice()
        {
            //pick random die values
            int die1 = 1 + randomNumbers.nextInt( 6 ); //first die roll
            int die2 = 1 + randomNumbers.nextInt( 6 ); //second die roll
     
            int sum = die1 + die2; // sum of die values
     
            return sum; //return sum of dice
        }//end method on rollDice
    }//end class Craps


  2. #2
    Super Moderator helloworld922's Avatar
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    Default Re: Craps- GAME fine tunning.

    JOptionPan.showInputDialog() i believe returns a null string if the cancel button is pushed. You need to check that before you try to parse the number into an int. To exit a program completely, you can use System.exit(), but it's not the option I would recommend. Rather, simply put a return statement.

    //enter bet and display players starting bank roll
                String betString = JOptionPane.showInputDialog("Enter Bet: Your " +
                    "Starting Bank has " + bank + " Dollars!!!!!!");
                if (betString == null)
                {
                      return;
                }
                int bet = Integer.parseInt(betString);

  3. The Following User Says Thank You to helloworld922 For This Useful Post:

    Beaney (January 3rd, 2010)

  4. #3
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    Default Re: Craps- GAME fine tunning.

    thank you that did the trick

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