Simple Slot Machine
SAMPLE APPLET:
INFORMATION: This a really simple game with a REALLY simple
scoring mechanism. You will get to see the full source code for this
assignment, but you will have to get get your own pictures!!! You pics
should all be set to 90x120. The pictures were used in this applet were
taken with a digital camera and then fixed up in GIMP.
Inspect the souce code carefully!!! Notice the use of the Random class to
generate Random numbers. Also carefully inspect the makeSet and scoreSet
methods. Notice what happens when the total score exceeds 99. Be ready to
answer questions about how the code works when you are ready to show your
work to your instructor.
The aspect of this game in most need of improvement is the scoring
mechanism. Be ready to explain how scoring works in this sample and how this
could be improved to be more similar to the way real slot machines work.
<![CDATA[
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
import java.util.*;
public class slot extends Applet{
Image offI;
Graphics offG;
int c; //current image
String[] pic = {"pumpkin.jpg", "guitar.jpg", "kenny.jpg",
"penguin.jpg", "flag.jpg"};
Image[] set = new Image[5];
Image[] bank = new Image[5];
Dimension d;
Random r;
int score, total;
int[] SCORE= {0,0,0,0,0};
public void init(){
setBackground(Color.blue);
d=getSize();
for(int i=0; i<bank.length; i++){
bank[i]=getImage(getDocumentBase(), pic[i]);
}
makeSet();
offI=createImage(d.width, d.height);
requestFocus();
this.addKeyListener(new KeyAdapter(){
public void keyPressed(KeyEvent k){
if(total<99) makeSet();
repaint();
}
});
}
public void update(Graphics g){
paint(g);
}
public void makeSet(){
r = new Random();
int x;
for(int i=0; i<bank.length; i++){
x = Math.abs(r.nextInt()%bank.length);
set[i]=bank[x];
SCORE[i]=x;
}
scoreSet();
}
public void scoreSet(){
score=0;
for(int i=0; i<SCORE.length; i++){
score+=SCORE[i];
}
total+=score;
}
public void paint(Graphics g){
offG=offI.getGraphics();
offG.setColor(getBackground());
offG.fillRect(0,0,d.width, d.height);
if(total<100){
for(int i=0; i<bank.length; i++){
offG.drawImage(set[i],10+i*100,35,this);
}
}
else{
for(int i=0; i<bank.length; i++){
offG.drawImage(bank[4], 10+i*100, 35, this);
}
}
offG.setColor(Color.white);
offG.setFont(new Font("Serif", Font.BOLD, 32));
offG.drawString("Simple Slot Machine", 110, 26);
if(total<100){
offG.setFont(new Font("Serif", Font.PLAIN, 12));
offG.drawString("SCORE: "+score, 10, 170);
offG.drawString("TOTAL: "+total, 10, 190);
offG.drawString("Press any key for another round", 10, 210);
}
else{
offG.drawString("WINNER!!!", 160, 200);
}
g.drawImage(offI,0,0,this);
offG.dispose();
}
}
]]>