Java Reference
In-Depth Information
image observer that is notified as more of the image becomes available. For the purposes of
this topic, the last parameter of the drawImage method will always be equal to null.
Below is a listing of all our code so far for the game Breakout. It displays the ball,
bricks, and paddle, but there is no code to move them. However, the different components
are separated into different classes, which makes adding the ball motion and keyboard and
mouse interaction easier. We will complete the game in Chapter 11.
import java . util . ;
import javax . swing . ;
import java .awt . ;
import java .awt.geom. ;
import java . io . ;
import javax . imageio . ;
public class Test
{
public static void main(String [] args)
{
BreakoutFrame frame = new BreakoutFrame () ;
frame. setVisible( true );
}
}
class BreakoutFrame extends JFrame
{
public static final
int HEIGHT = 600;
public static final
int WIDTH = 488;
public static final
int LOCATION X = 50;
public static final
int LOCATION Y = 100;
public BreakoutFrame () {
setDefaultCloseOperation(JFrame.EXITON CLOSE) ;
setLocation(LOCATIONX, LOCATION Y) ;
setSize(WIDTH, HEIGHT);
setResizable( false );
BreakoutPanel panel = new BreakoutPanel () ;
add(panel) ;
}
}
{
public static final int NUM BRICK ROWS = 10;
public static final int NUM BRICK COLUMNS = 30;
private Ball ball = new Ball (Color . red) ;
private ArrayList
class BreakoutPanel extends JPanel
<
Brick
>
bricks = new ArrayList
<>
() ;
private Paddle paddle = new Paddle(Color .BLUE) ;
private Player player = new Player () ;
public BreakoutPanel () {
for ( int row = 0; row < NUM BRICK ROWS ; row++) {
for ( int col = 0; col < NUM BRICK COLUMNS ; c o l ++) {
bricks .add( new Brick (row , col , getRandomColor () ) ) ;
}
}
}
public Color getRandomColor () {
Color color = new Color (( int )
(Math . random ( )
256) ,
 
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