Question

刚写了一个显示动态动画的程序。顺便说一句，它运行但问题是背景继续以快速的速度闪烁黑白。我用Google搜索了它，但没有得到合适的答案。这是代码：对于主要方法 -

import java.awt.*;
import javax.swing.*;
import javax.swing.ImageIcon;
import javax.swing.JFrame;

    public class nam2 {
        public static void main(String[] args){
             nam2 b= new nam2();
             b.run();
    }
        private Sprite sprite;              //class to control characteristics of image
        private Animation a;                //class to control animation  
        private ScreenManager s;            //class to control monitor screen
        private Image bg;                   //an image

        private static final DisplayMode modes1[] = {    // List of desired DisplayModes
            new DisplayMode(800,600,32,0),        
            new DisplayMode(800,600,25,0),
            new DisplayMode(800,600,16,0),
            new DisplayMode(640,480,32,0),
            new DisplayMode(640,480,24,0),
            new DisplayMode(1920,1080,16,0),
        };
        //load images and add scenes
        public void loadImages(){
            bg = new ImageIcon("G:\\bg2.jpg").getImage();
            Image face1 = new ImageIcon("G:\\naman1.jpg").getImage();
            Image face2 = new ImageIcon("G:\\3.jpg").getImage();

            a = new Animation();
            a.addScene(face1,500);
            a.addScene(face2,500);

            sprite = new Sprite(a);
            sprite.setVelocityX(0.3f);
            sprite.setVelocityY(0.3f);
        }
        //run method call from main method
        public void run(){
            s = new ScreenManager();
            try{
                DisplayMode dm = s.findFirstCompDisplayMode(modes1);
                s.setFullScreen(dm);
                loadImages();
                movieLoop();
            }finally{s.restoreScren();}


        }

        public void movieLoop(){
            long startingTime = System.currentTimeMillis();
            long cumTime = startingTime;

            while(cumTime - startingTime <10000){
                long timePassed = System.currentTimeMillis() - cumTime ;
                cumTime += timePassed;
                update(timePassed); 
                //draw and update screen
                Graphics2D g = s.getGraphics();
                draw(g);
                g.dispose();
                s.update();

                try{
                    Thread.sleep(20);   
                }catch(Exception e){}
            }
        }

       //draw method 
       public void draw(Graphics g){
            g.drawImage(bg, 0, 0, null);
        g.drawImage(sprite.getImage(),                 Math.round(sprite.getX()),Math.round(sprite.getY()),null);

          }
        //update method

        private void update(long timePassed) {
            if(sprite.getX() < 0 ){
                sprite.setVelocityX(Math.abs(sprite.getVelocityX()));
            }else if(sprite.getX() + sprite.getWidth() >= s.getWidth()){
                sprite.setVelocityX(-Math.abs(sprite.getVelocityX()));
            }

            if(sprite.getY() < 0 ){
                sprite.setVelocityY(Math.abs(sprite.getVelocityY()));
            }else if(sprite.getY() + sprite.getHeight() >= s.getHeight()){
                sprite.setVelocityY(-Math.abs(sprite.getVelocityY()));
            }
            sprite.update(timePassed);
        }



    }

我上传了只有主要类的代码。如果需要其他课程代码，请告诉我。当我改变线程的休眠时间时，它不是与线程相关的东西，闪烁的速度会发生变化。所以我写这个问题的主要问题是：为什么屏幕会闪烁黑到白，再次连续变黑。

屏幕闪烁黑色＆amp;白色反复

0 个答案: