Puggies.java

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.Random;

public class Puggies {

    /**
    *   Program:    Puggies.java
    *   Purpose:    Simulate a slot machine
    *   Creator:    Chris Clarke
    *   Created:    07.02.2013
    */

    public static void main(String[] args) {
        PuggiesJFrame frame = new PuggiesJFrame();
        frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE);
        // Set to a reasonable size.
        frame.setSize(740, 500);
        frame.setVisible(true);
    } // end main
} // end class

class PuggiesJFrame extends JFrame implements ActionListener {

    public PuggiesJFrame() {
        setTitle("Puggies by Chris Clarke");
        setLayout(new BorderLayout());
        userControlPanel = new JPanel();
        userControlPanel.setLayout( new FlowLayout());
            btnNudge1 = new Button( "Nudge");
        btnNudge1.addActionListener( this);
        btnNudge1.setEnabled(false);
            userControlPanel.add( btnNudge1);
            btnNudge2 = new Button( "Nudge");
        btnNudge2.addActionListener( this);
        btnNudge2.setEnabled(false);
            userControlPanel.add( btnNudge2);
            btnNudge3 = new Button( "Nudge");
        btnNudge3.addActionListener( this);
        btnNudge3.setEnabled(false);
            userControlPanel.add( btnNudge3);
            btnSpin = new Button( "Spin!");
        btnSpin.addActionListener( this);
            userControlPanel.add( btnSpin);
        add("South", userControlPanel);
    }

    public void paint (Graphics g) {
        g.setColor(Color.WHITE);
        g.fillRect(0,0, 740, 500);

        g.setFont(new Font("Courier", Font.PLAIN, 90));

        g.setColor(Color.BLACK);
        g.drawString("| | | |", 180, 200);

        if (!show) return;

        g.setColor(Color.LIGHT_GRAY);
        g.drawString("|" +nudge1 + "|" + nudge2 + "|" + nudge3+ "|", 180, 120);
        g.setColor(Color.BLACK);
        g.drawString("|" +numberOne+"|"+numberTwo+ "|" + numberThree+"|", 180, 200);
        if (numberOne == numberTwo && numberTwo == numberThree) {
            //All of your numbers match
            int prize = 1;
            if (numberOne==5 || numberOne==6) {
                prize = 2;
            }
            if (numberOne>6) {
                prize = 3;
            }
            g.drawString("WIN £"+prize+"!!", 180, 300);
            n=0;    // no nudges
            doingNudges = true;
        } else if (numberOne == numberTwo || numberTwo == numberThree) {
            //Two of your numbers match
            g.drawString("WIN £0.20!", 120, 300);
        }

        if (n==0 && !doingNudges) {
            n = getNudges();
        }

        g.drawString("Nudges: "+n, 220, 400);
        if (n>0) {
            doingNudges = true;
            btnNudge1.setEnabled(true);
            btnNudge2.setEnabled(true);
            btnNudge3.setEnabled(true);
        } else {

            btnNudge1.setEnabled(false);
            btnNudge2.setEnabled(false);
            btnNudge3.setEnabled(false);
        }
    }

    public int getNudges() {
        Random number = new Random();
        int[] nudges = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3 };

        int num = number.nextInt(nudges.length);
        if (nudges[num]>0) doingNudges = true;
        return nudges[num];
    }

    public void spin() {
        Random number = new Random();
        int numSymbols = symbols1.length;

        r1 = number.nextInt(numSymbols);
        r2 = number.nextInt(numSymbols);
        r3 = number.nextInt(numSymbols);

        doingNudges = false;
        n = 0;
    }

    public void calcSymbols() {
        numberOne = symbols1[r1];
        numberTwo = symbols2[r2];
        numberThree = symbols3[r3];

        nudge1 = r1 == symbols1.length-1? symbols1[0]: symbols1[r1+1];
        nudge2 = r2 == symbols2.length-1? symbols2[0]: symbols2[r2+1];
        nudge3 = r3 == symbols3.length-1? symbols3[0]: symbols3[r3+1];
    }

    public void nudge1() {
        numberOne = nudge1;
        r1++;
        if (r1>=symbols1.length) r1 = 0;
    }

    public void nudge2() {
        numberTwo = nudge2;
        r2++;
        if (r2>=symbols2.length) r2 = 0;
    }

    public void nudge3() {
        numberThree = nudge3;
        r3++;
        if (r3>=symbols3.length) r3 = 0;
    }

    public void actionPerformed(ActionEvent evt) {
        if (evt.getSource() == btnSpin) {   // spin button clicked
            show = true;
            spin();
        } else if (evt.getSource() == btnNudge1) {
            if (n>0) {
                nudge1();
                n--;
            }
        } else if (evt.getSource() == btnNudge2) {
            if (n>0) {
                nudge2();
                n--;
            }
        } else if (evt.getSource() == btnNudge3) {
            if (n>0) {
                nudge3();
                n--;
            }
        }
        calcSymbols();
        repaint();
    }

    public static final int[]   symbols1 = { 2, 7, 4, 1, 8, 9, 5, 3, 6, 0, 2, 3 };
    public static final int[]   symbols2 = { 3, 0, 8, 1, 5, 6, 4, 2, 9, 7, 1, 4 };
    public static final int[]   symbols3 = { 8, 9, 4, 2, 7, 3, 0, 1, 6, 5, 0, 2 };

    private static int      numberOne, numberTwo, numberThree;
    private static int      nudge1, nudge2, nudge3;
    private static int      n=0; // the number of available nudges
    private static boolean      doingNudges = false;

    private static int      r1, r2, r3;

    private static boolean      show = false;
    public static JPanel        userControlPanel;
    public static Button        btnSpin;
    public static Button        btnNudge1, btnNudge2, btnNudge3;
}