Computer Science Canada

Need help with project
Author:  Regals [ Fri Jun 06, 2008 11:08 am ]
Post subject:  Need help with project
Hello everyone. I'm creaing a dice game for a project in my ICS class. The premise of the game is that a player enters a bet amount and win's 2x the bet amount if the roll is a 6. However, I also want to have a GUI window open with the picture of the amount of the roll (i.e. a roll of 5 shows the image of a die rolling a 5). Here is my code so far:

Java:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.text.*;
import java.math.*;
public class JPanelImage extends JFrame
{
    public JPanelImage ()
    {
        super ("Roll");
        setSize (50, 100);
        setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
        setVisible (true);

        Container myContent = getContentPane ();
        myContent.setBackground (Color.white);
        FlowLayout myFlow = new FlowLayout ();
        myPanel panel1 = new myPanel ();
        myContent.add (panel1);
        setContentPane (myContent);
    }


    class myPanel extends JPanel
    {
        public void paintComponent (Graphics artist)
        {
            Toolkit myTools = Toolkit.getDefaultToolkit ();
            Image pic1 = myTools.getImage ("die1.jpg");
            if (pic1 != null)
            {
                artist.drawImage (pic1, 10, 10, this);
            }
            else
            {
                System.out.println ("Image not found!");
            }
        }
    }


    public void paintComponent2 (Graphics artist)
    {
        Toolkit myTools = Toolkit.getDefaultToolkit ();
        Image pic2 = myTools.getImage ("die2.jpg");
        if (pic2 != null)
        {
            artist.drawImage (pic2, 10, 10, this);
        }
        else
        {
            System.out.println ("Image not found!");
        }
    }


    public void paintComponent3 (Graphics artist)
    {
        Toolkit myTools = Toolkit.getDefaultToolkit ();
        Image pic3 = myTools.getImage ("die3.jpg");
        if (pic3 != null)
        {
            artist.drawImage (pic3, 10, 10, this);
        }


        else
        {
            System.out.println ("Image not found!");
        }
    }


    public void paintComponent4 (Graphics artist)
    {
        Toolkit myTools = Toolkit.getDefaultToolkit ();
        Image pic4 = myTools.getImage ("die4.jpg");
        if (pic4 != null)
        {
            artist.drawImage (pic4, 10, 10, this);
        }


        else
        {
            System.out.println ("Image not found!");
        }
    }


    public void paintComponent5 (Graphics artist)
    {
        Toolkit myTools = Toolkit.getDefaultToolkit ();
        Image pic5 = myTools.getImage ("die5.jpg");
        if (pic5 != null)
        {
            artist.drawImage (pic5, 10, 10, this);
        }


        else
        {
            System.out.println ("Image not found!");
        }
    }


    public void paintComponent6 (Graphics artist)
    {
        Toolkit myTools = Toolkit.getDefaultToolkit ();
        Image pic6 = myTools.getImage ("die6.jpg");
        if (pic6 != null)
        {
            artist.drawImage (pic6, 10, 10, this);
        }


        else
        {
            System.out.println ("Image not found!");
        }
    }



    public static void main (String [] args) throws IOException
    {
        BufferedReader stdin = new BufferedReader (new InputStreamReader (System.in));
        String inData;
        int cash = 100; // initail amount of cash
        int lower = 1;  // your lower integer value
        int upper = 7; // the larger one of your two integers
        int bet = 0;
        while (cash >= 1)
        {System.out.println ();
            System.out.println ("You have $" + cash);
            System.out.println ("Enter a bet amount.");
            System.out.println ("Enter 0 to close.");
            inData = stdin.readLine ();
            bet = Integer.parseInt (inData);
            if (bet == 0)
            {
                System.exit (0);
            }
            else if (bet > cash)
                System.out.println ("Invalid amount.");
            else
            {
                double rand = Math.random ();
                int result = lower + (int) ((upper - lower) * rand);
                System.out.println ("You rolled a " + result + ".");
                if (result == 1)
                {
                    JPanelImage jpi = new JPanelImage ();
                    cash = cash - bet;
                }
                if (result == 2)
                {
                    JPanelImage jpi = new JPanelImage ();
                    cash = cash - bet;
                }
                if (result == 3)
                {
                    JPanelImage jpi = new JPanelImage ();
                    cash = cash - bet;
                }
                if (result == 4)
                {
                    JPanelImage jpi = new JPanelImage ();
                    cash = cash - bet;
                }
                if (result == 5)
                {
                    JPanelImage jpi = new JPanelImage ();
                    cash = cash - bet;
                }
                if (result == 6)
                {
                    JPanelImage jpi = new JPanelImage ();
                    cash = cash + bet + bet;
                }
            }
        }
    }
}


Any ideas on how I can get the program to show the correct pictures?
Author:  btiffin [ Fri Jun 06, 2008 11:47 am ]
Post subject:  RE:Need help with project
http://www.leepoint.net/notes-java/examples/graphics/rolldice/rolldice.html

For one example.

Cheers
Author:  Regals [ Fri Jun 06, 2008 12:40 pm ]
Post subject:  Re: Need help with project
I'm not understanding exactly how that program works. Can someone explain it for me. Thanks.
Author:  btiffin [ Fri Jun 06, 2008 1:19 pm ]
Post subject:  Re: Need help with project
For your needs; ignore the applet JFrame (RollDice.java) and the JPanel extension (RollDicePanel.java) and hone in on the last source listing (Die.java). It should give you enough hints about one way of drawing a die in a window. In particular the paintComponents method and how it draws the pips on the white background. (drawSpot and its usage of fillOval).

Cheers
Author:  Regals [ Mon Jun 09, 2008 1:00 pm ]
Post subject:  Re: Need help with project
Alright, so I have the dice being drawn to the screen. However, I now have a problem with the betting algorithm. I cant figure out what it's doing. Here is the code:
Java:

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.text.*;
import java.math.*;
public class DiceGame extends JFrame
{
    private static final int SPOT_DIAM = 9;  // Diameter of spots
    private static int cash = 100; // initial amount of chips
    private static int bet = 0; // value of bet

    public DiceGame ()  // creates the roll window
    {
        super ("Roll");
        setSize (60, 100);
        setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
        setVisible (true);
        Container myContent = getContentPane ();
        myContent.setBackground (Color.white);
        FlowLayout myFlow = new FlowLayout ();
        myPanel panel1 = new myPanel ();
        myContent.add (panel1);
        setContentPane (myContent);
    }


    class myPanel extends JPanel
    {
        public void paintComponent (Graphics artist)
        {
            Graphics2D g2 = (Graphics2D) artist;
            g2.setRenderingHint (RenderingHints.KEY_ANTIALIASING,
                    RenderingHints.VALUE_ANTIALIAS_ON);
            // Paint background
            int w = 60; // sets the width of the die image
            int h = 60; // sets the height of the die image
            g2.setColor (Color.white); // sets the colour of the rectangle
            g2.fillRect (0, 0, w, h); // fills the rectangle
            g2.setColor (Color.black); // sets the colour of the border of the dice
            g2.drawRect (0, 0, w - 1, h - 1); // draws the border
            Toolkit myTools = Toolkit.getDefaultToolkit ();
            int result = (int) (6 * Math.random () + 1); // gets a random integer from 1-6
            if (result == 4) // will increase the cash if a 4 is rolled
            {
                cash = cash + bet;
            }
            else // will decrease the bet if anything but 4 is rolled
            {
                cash = cash - bet;
            }
            switch (result)// draws the die
            {
                case 1:
                    drawSpot (g2, w / 2, h / 2);
                    break;
                case 3:
                    drawSpot (g2, w / 2, h / 2);
                    // Fall thru to next case
                case 2:
                    drawSpot (g2, w / 4, h / 4);
                    drawSpot (g2, 3 * w / 4, 3 * h / 4);
                    break;
                case 5:
                    drawSpot (g2, w / 2, h / 2);
                    // Fall thru to next case
                case 4:
                    drawSpot (g2, w / 4, h / 4);
                    drawSpot (g2, 3 * w / 4, 3 * h / 4);
                    drawSpot (g2, 3 * w / 4, h / 4);
                    drawSpot (g2, w / 4, 3 * h / 4);
                    break;
                case 6:
                    drawSpot (g2, w / 4, h / 4);
                    drawSpot (g2, 3 * w / 4, 3 * h / 4);
                    drawSpot (g2, 3 * w / 4, h / 4);
                    drawSpot (g2, w / 4, 3 * h / 4);
                    drawSpot (g2, w / 4, h / 2);
                    drawSpot (g2, 3 * w / 4, h / 2);
                    break;
            }
        }
    }


    private void drawSpot (Graphics2D g2, int x, int y)// used to draw the spots on the die
    {
        g2.fillOval (x - SPOT_DIAM / 2, y - SPOT_DIAM / 2, SPOT_DIAM, SPOT_DIAM);
    }


    public static void main (String [] args) throws IOException
    {
        BufferedReader stdin = new BufferedReader (new InputStreamReader (System.in));
        String inData;
        while (cash >= 1) // the game will continue to run until the user is out of cash
        {
            System.out.println ("You currently have $" + cash); // prints the current cash of the user
            System.out.println ("Enter bet amount"); // prompts the user to input a bet amount
            inData = stdin.readLine (); // gets the user's input
            bet = Integer.parseInt (inData); // converts the input into integer form
            DiceGame dg = new DiceGame ();
        }
    }
}


Any input on how to fix this is appreciated. Thank you for your time.

-Regals
Author:  Regals [ Wed Jun 11, 2008 10:50 am ]
Post subject:  Re: Need help with project
bump

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