Java Reference
In-Depth Information
public class
BreakoutPanel
extends
JPanel
{
private
javax . swing .Timer timer ;
private
Ball ball ;
private
Paddle paddle ;
public
BreakoutPanel ()
{
ball =
new
Ball (Color .RED,
this
);
paddle =
new
Paddle(Color .BLUE,
this
);
timer =
new
javax . swing .Timer(10 ,
new
ActionListener ()
{
public void
actionPerformed(ActionEvent e)
{
ball .move() ;
repaint () ;
}
}
);
timer. start() ;
addKeyListener(
new
KeyAdapter ()
{
public void
keyPressed (KeyEvent e )
{
if
( e . getKeyCode ()==KeyEvent .VK LEFT)
{
paddle .moveLeft() ;
if
( e . getKeyCode ()==KeyEvent .VK RIGHT)
{
paddle .moveRight() ;
repaint () ;
}
}
);
addMouseMotionListener(
new
MouseMotionAdapter ()
{
boolean
firstTime =
true
;
int
oldX ;
public void
mouseMoved(MouseEvent e )
{
if
(firstTime)
{
oldX = e . getX() ;
firstTime =
false
;
paddle .move(e .getX()
−
oldX) ;
oldX = e . getX() ;
repaint () ;
}
}
);
setFocusable(
true
);
}
public void
paintComponent(Graphics g)
{
super
. paintComponent(g) ;
Graphics2D g2 = (Graphics2D) g ;
ball .draw(g2);
paddle .draw(g2) ;
}
}
