问题描述
packagebar;importjava.applet.*;importjava.io.*;importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;importjava.awt.geom.*;classball{intcx,cy,color;ball(intcolor,intx,inty){this.color=color;this.cx=x;this.cy=y;}}publicclassGameextendsJApplet{publicvoidinit(){Containercp=getContentPane();CBoxpa=newCBox();pa.setBackground(Color.orange);cp.add(pa,BorderLayout.CENTER);}}classCBoxextendsJPanelimplementsRunnable{intx1,y1,x2,y2;Fontf=newFont("TimesRoman",Font.BOLD,24);Threadth1=null;Threadth2=null;publicCBox(){th1=newThread(this);th1.start();th2=newThread(this);th2.start();}publicvoidrun(){x1=0;y1=330;x2=960;y2=330;booleanm=true,n=false;//true为正向，false为反向while(true){if(x1<=0){m=!m;}if(x2>=960){n=!n;}if(m==false)x1=x1-5;elsex1=x1+5;if(n==true)x2=x2-10;elsex2=x2+10;repaint();try{th1.sleep(60);}catch(InterruptedExceptione){};}}publicvoidpaintComponent(Graphicsg){super.paintComponent(g);Graphics2Dg2=(Graphics2D)g;g2.setFont(f);Ellipse2D.Doublee1=newEllipse2D.Double(x1,y1,60,60);g2.fill(e1);g2.setColor(Color.blue);Ellipse2D.Doublee2=newEllipse2D.Double(x2,y2,60,60);g2.fill(e2);}}简单的实现小球碰撞弹回x1==x2时m,n取反未实现求助刚注册没分。。。谢谢
解决方案
解决方案二：
自己顶。~~~
解决方案三：
我晕没人能免费帮下忙么。
解决方案四：
packagebar;importjava.applet.*;importjava.io.*;importjava.awt.*;importjava.awt.event.*;importjavax.swing.*;importjdbc.CBox;importjava.awt.geom.*;publicclassGameextendsJApplet{publicvoidinit(){Containercp=getContentPane();CBoxpa=newCBox();pa.setBackground(Color.orange);cp.add(pa,BorderLayout.CENTER);}}classCBoxextendsJPanelimplementsRunnable{intx1,y1,x2,y2;Fontf=newFont("TimesRoman",Font.BOLD,24);Threadth1=null;Threadth2=null;publicCBox(){th1=newThread(this);th1.start();th2=newThread(this);th2.start();}publicvoidrun(){x1=0;y1=330;x2=960;y2=330;booleanm=true,n=false;//true为正向，false为反向while(true){if(m)x1=x1+5;elsex1=x1-5;if(n)x2=x2+5;elsex2=x2-5;if(x1<0||x1>960){m=!m;}if(x2<0||x2>960){n=!n;}if(x2-x1==50){if(m==true)m=false;elsem=true;if(n==false)n=true;elsen=false;continue;}repaint();try{th1.sleep(10);}catch(InterruptedExceptione){};}}publicvoidpaintComponent(Graphicsg){super.paintComponent(g);Graphics2Dg2=(Graphics2D)g;Ellipse2D.Doublee1=newEllipse2D.Double(x1,y1,60,60);g2.fill(e1);g2.setColor(Color.red);Ellipse2D.Doublee2=newEllipse2D.Double(x2,y2,60,60);g2.fill(e2);}}
解决方案五：
路过来看看！