想知道是否有人能指出我正确的指挥,我已经开发了一个乒乓球游戏,它需要双重缓冲由于闪烁.我在这里尝试了一些帖子尝试使它工作,但我仍然是一个摇摆awt足够的初学者,任何帮助将是惊人的谢谢.
public class PongPanel extends JPanel implements Runnable {
private int screenWidth = 500;
private int screenHeight = 300;
private boolean isPaused = false;
private boolean isGameOver = false;
private int playToPoints = 10;
private Padel player1,player2;
private Ball ball;
private Thread gameThread;
private Image dbImage;
private Graphics dbg;
public PongPanel() {
setPreferredSize(new Dimension(screenWidth,screenHeight));
setBackground(Color.BLACK);
setDoubleBuffered(true);
setFocusable(true);
requestFocus();
player1 = new Padel(Position.LEFT,screenWidth,screenHeight);
player2 = new Padel(Position.RIGHT,screenWidth,screenHeight);
ball = new Ball(10,screenWidth/2,screenHeight/2,Color.WHITE);
}
public void addNotify(){
super.addNotify();
startGame();
}
private void startGame(){
gameThread = new Thread(this);
gameThread.start();
}
@Override
public void run() {
while (!isGameOver) {
dbImage = createImage(screenWidth,screenHeight);
dbg = this.getGraphics();
if(!isPaused){
if(!gameOverCheck()){
updateGame();
paintComponents(dbg);
}
}else if(isPaused){
dbg.setColor(Color.ORANGE);
dbg.setFont(new Font("serif",Font.BOLD,50));
dbg.drawString("Paused", screenWidth/2-82, screenHeight/2);
}
try {
Thread.sleep(30);
} catch (InterruptedException e) {e.printStackTrace();}
}
}
private boolean gameOverCheck(){
if(player1.getScore() == playToPoints){
dbg.setColor(player1.getColour());
dbg.setFont(new Font("serif",Font.BOLD,50));
dbg.drawString("Player 1 Wins!", screenWidth/2 - 161, screenHeight/2);
setGameOver(true);
return true;
}else if(player2.getScore() == playToPoints){
dbg.setColor(player2.getColour());
dbg.setFont(new Font("serif",Font.BOLD,50));
dbg.drawString("Player 2 Wins!", screenWidth/2 - 161, screenHeight/2);
setGameOver(true);
return true;
}
return false;
}
private void updateGame(){
ball.move(screenWidth,screenHeight,player1,player2);
player1.aiForPadel(screenWidth, screenHeight, ball.getX(), ball.getY());
player2.aiForPadel(screenWidth, screenHeight, ball.getX(), ball.getY());
}
@Override
public void paintComponents(Graphics g) {
super.paintComponents(g);
dbg.setColor(Color.BLACK);
dbg.fillRect(0, 0, screenWidth+20, screenHeight+20);
dbg.setColor(Color.WHITE);
dbg.drawLine(screenWidth/2, 0, screenWidth/2, screenHeight);
dbg.setFont(new Font("serif",Font.BOLD,32));
dbg.drawString(player1.getScore()+"", screenWidth/2-40, screenHeight - 20);
dbg.drawString(player2.getScore()+"", screenWidth/2+20, screenHeight - 20);
ball.drawBall(dbg);
player1.drawPadel(dbg);
player2.drawPadel(dbg);
}
}
解决方法:
有一个非常好的教程here描述了如何使用BufferStrategy来产生非闪烁动画.
重点是:
>在顶层Canvas上调用setIgnoreRepaint(true)以防止AWT重新绘制它,因为您通常会在动画循环中自己执行此操作.
>从BufferStrategy获取Graphics2D对象(而不是使用通过paintComponent(Graphics g)传入的实例.