Cant import a timer help pls
i was looking online for game making tutorials and came acrost this code below. I cant seem to get it to compile because it cant find the
import com.sun.j3d.utils.timer.J3DTimer;
what can i do or change it to make this work and complile
package BugRunner;
// BugPanel.java
// Andrew Davison, April 2005, ad@fivedots.coe.psu.ac.th
/* The game's drawing surface. Uses active rendering to a JPanel
with the help of Java 3D's timer.
See WormP for a version with statistics generation.
*/
import javax.swing.*;
import java.awt.image.*;
import java.awt.event.*;
import java.awt.*;
import com.sun.j3d.utils.timer.J3DTimer;
publicclass BugPanelextends JPanelimplements Runnable
{
privatestaticfinalint PWIDTH = 500;// size of panel
privatestaticfinalint PHEIGHT = 400;
privatestaticfinalint NO_DELAYS_PER_YIELD = 16;
/* Number of frames with a delay of 0 ms before the animation thread yields
to other running threads. */
privatestaticint MAX_FRAME_SKIPS = 5;
// no. of frames that can be skipped in any one animation loop
// i.e the games state is updated but not rendered
// image and clip loader information files
privatestaticfinal String IMS_INFO ="imsInfo.txt";
privatestaticfinal String SNDS_FILE ="clipsInfo.txt";
private Thread animator;// the thread that performs the animation
privatevolatileboolean running =false;// used to stop the animation thread
privatevolatileboolean isPaused =false;
privatelong period;// period between drawing in _nanosecs_
private BugRunner bugTop;
private ClipsLoader clipsLoader;
private BallSprite ball;// the sprites
private BatSprite bat;
privatelong gameStartTime;// when the game started
privateint timeSpentInGame;
// used at game termination
privatevolatileboolean gameOver =false;
privateint score = 0;
// for displaying messages
private Font msgsFont;
private FontMetrics metrics;
// off-screen rendering
private Graphics dbg;
private Image dbImage =null;
// holds the background image
private BufferedImage bgImage =null;
public BugPanel(BugRunner br,long period)
{
bugTop = br;
this.period = period;
setDoubleBuffered(false);
setBackground(Color.black);
setPreferredSize(new Dimension(PWIDTH, PHEIGHT));
setFocusable(true);
requestFocus();// the JPanel now has focus, so receives key events
addKeyListener(new KeyAdapter(){
publicvoid keyPressed(KeyEvent e)
{ processKey(e);}
});
// load the background image
ImagesLoader imsLoader =new ImagesLoader(IMS_INFO);
bgImage = imsLoader.getImage("bladerunner");
// initialise the clips loader
clipsLoader =new ClipsLoader(SNDS_FILE);
// create game sprites
bat =new BatSprite(PWIDTH, PHEIGHT, imsLoader,
(int)(period/1000000) );// in ms
ball =new BallSprite(PWIDTH, PHEIGHT, imsLoader, clipsLoader, this, bat);
addMouseListener(new MouseAdapter(){
publicvoid mousePressed(MouseEvent e)
{ testPress(e.getX());}// handle mouse presses
});
// set up message font
msgsFont =new Font("SansSerif", Font.BOLD, 24);
metrics = this.getFontMetrics(msgsFont);
}// end of BugPanel()
privatevoid processKey(KeyEvent e)
// handles termination and game-play keys
{
int keyCode = e.getKeyCode();
// termination keys
// listen for esc, q, end, ctrl-c on the canvas to
// allow a convenient exit from the full screen configuration
if ((keyCode == KeyEvent.VK_ESCAPE) || (keyCode == KeyEvent.VK_Q) ||
(keyCode == KeyEvent.VK_END) ||
((keyCode == KeyEvent.VK_C) && e.isControlDown()) )
running =false;
// game-play keys
if (!isPaused && !gameOver){
if (keyCode == KeyEvent.VK_LEFT)
bat.moveLeft();
elseif (keyCode == KeyEvent.VK_RIGHT)
bat.moveRight();
elseif (keyCode == KeyEvent.VK_DOWN)
bat.stayStill();
}
}// end of processKey()
publicvoid gameOver()
// called by BallSprite to signal that the game is over
{
int finalTime =
(int) ((J3DTimer.getValue() - gameStartTime)/1000000000);// ns --> secs
score = finalTime;// could be more fancy!
clipsLoader.play("gameOver",false);// play a game over clip once
gameOver =true;
}// end of gameOver()
publicvoid addNotify()
// wait for the JPanel to be added to the JFrame before starting
{ super.addNotify();// creates the peer
startGame();// start the thread
}
privatevoid startGame()
// initialise and start the thread
{
if (animator ==null || !running){
animator =new Thread(this);
animator.start();
}
}// end of startGame()
// - game life cycle methods
// called by the JFrame's window listener methods
publicvoid resumeGame()
// called when the JFrame is activated / deiconified
{ isPaused =false;}
publicvoid pauseGame()
// called when the JFrame is deactivated / iconified
{ isPaused =true;}
publicvoid stopGame()
// called when the JFrame is closing
{ running =false;}
// -
privatevoid testPress(int x)
// use a mouse press to control the bat
{if (!isPaused && !gameOver)
bat.mouseMove(x);
}// end of testPress()
publicvoid run()
/* The frames of the animation are drawn inside the while loop. */
{
long beforeTime, afterTime, timeDiff, sleepTime;
long overSleepTime = 0L;
int noDelays = 0;
long excess = 0L;
gameStartTime = J3DTimer.getValue();
beforeTime = gameStartTime;
running =true;
while(running){
gameUpdate();
gameRender();
paintScreen();
afterTime = J3DTimer.getValue();
timeDiff = afterTime - beforeTime;
sleepTime = (period - timeDiff) - overSleepTime;
if (sleepTime > 0){// some time left in this cycle
try{
Thread.sleep(sleepTime/1000000);// nano -> ms
}
catch(InterruptedException ex){}
overSleepTime = (J3DTimer.getValue() - afterTime) - sleepTime;
}
else{// sleepTime <= 0; the frame took longer than the period
excess -= sleepTime;// store excess time value
overSleepTime = 0L;
if (++noDelays >= NO_DELAYS_PER_YIELD){
Thread.yield();// give another thread a chance to run
noDelays = 0;
}
}
beforeTime = J3DTimer.getValue();
/* If frame animation is taking too long, update the game state
without rendering it, to get the updates/sec nearer to
the required FPS. */
int skips = 0;
while((excess > period) && (skips < MAX_FRAME_SKIPS)){
excess -= period;
gameUpdate();// update state but don't render
skips++;
}
}
System.exit(0);// so window disappears
}// end of run()
privatevoid gameUpdate()
{if (!isPaused && !gameOver){
ball.updateSprite();
bat.updateSprite();
}
}// end of gameUpdate()
privatevoid gameRender()
{
if (dbImage ==null){
dbImage = createImage(PWIDTH, PHEIGHT);
if (dbImage ==null){
System.out.println("dbImage is null");
return;
}
else
dbg = dbImage.getGraphics();
}
// draw the background: use the image or a black colour
if (bgImage ==null){
dbg.setColor(Color.black);
dbg.fillRect (0, 0, PWIDTH, PHEIGHT);
}
else
dbg.drawImage(bgImage, 0, 0,this);
// draw game elements
ball.drawSprite(dbg);
bat.drawSprite(dbg);
reportStats(dbg);
if (gameOver)
gameOverMessage(dbg);
}// end of gameRender()
privatevoid reportStats(Graphics g)
// Report the number of returned balls, and time spent playing
{
if (!gameOver)// stop incrementing the timer once the game is over
timeSpentInGame =
(int) ((J3DTimer.getValue() - gameStartTime)/1000000000);// ns --> secs
g.setColor(Color.yellow);
g.setFont(msgsFont);
ball.drawBallStats(g, 15, 25);// the ball sprite reports the ball stats
g.drawString("Time: " + timeSpentInGame +" secs", 15, 50);
g.setColor(Color.black);
}// end of reportStats()
privatevoid gameOverMessage(Graphics g)
// center the game-over message in the panel
{
String msg ="Game Over. Your score: " + score;
int x = (PWIDTH - metrics.stringWidth(msg))/2;
int y = (PHEIGHT - metrics.getHeight())/2;
g.setColor(Color.red);
g.setFont(msgsFont);
g.drawString(msg, x, y);
}// end of gameOverMessage()
privatevoid paintScreen()
// use active rendering to put the buffered image on-screen
{
Graphics g;
try{
g = this.getGraphics();
if ((g !=null) && (dbImage !=null))
g.drawImage(dbImage, 0, 0,null);
// Sync the display on some systems.
// (on Linux, this fixes event queue problems)
Toolkit.getDefaultToolkit().sync();
g.dispose();
}
catch (Exception e)
{ System.out.println("Graphics context error: " + e);}
}// end of paintScreen()
}// end of BugPanel class
