import java.applet.Applet;
import java.awt.event.*;
import java.awt.*;




public class test1 extends Applet {
    MotionCanvas X;
    ControlCanvas C;
    Animator A;  
    GridBagConstraints c;
    GridBagLayout game;

    public void init() {

	game=new GridBagLayout();
	c=new GridBagConstraints();
	c.gridwidth=GridBagConstraints.REMAINDER;
	c.gridheight=1;

	A=new Animator();
	X=new MotionCanvas();
	C=new ControlCanvas();
	C=C.addMotionCanvas(X);
	C=C.addAnimator(A);
	A=A.addMotionCanvas(X);

	X.resize(400,100);
	C.resize(400,60);

	game.setConstraints(X,c);
        game.setConstraints(C,c);

	add(X);
	add(C);
	try {
          A.start();
	}
	catch(Exception e) {}

	setBackground(Color.black);
    }


}



class DBCanvas extends Canvas {
    
    public void update(Graphics g) {
        Graphics g2;
        Image offscreen = null;
        offscreen = createImage(size().width, size().height);
        g2 = offscreen.getGraphics();
        paint(g2);
        g.drawImage(offscreen, 0, 0, this);
	g2.dispose();
	offscreen.flush();
    }
}

class MotionCanvas extends DBCanvas {

    Bug B;

    MotionCanvas() {
       B=new Bug();
    }

    public void paint(Graphics g) {

	B.render(g,0);
	B.render(g,-400);

    }

}


class Bug {
int pos;

    Bug() {
    pos=200;
    }

    void render(Graphics g,int t) {
	int[] wiggle=new int[10];
	int pos2;
	g.translate(t+pos,0);



	g.setColor(Color.green);
	for(int i=1;i<=6;++i) {
	    pos2=pos+6*i;
            wiggle[i]=pos2-36*(pos2/36);
	}

	g.drawLine(50,35,38+wiggle[1],15); 
        g.drawLine(50,65,64-wiggle[2],85); 
        g.drawLine(20,61,36-2*wiggle[3],80); //back
        g.drawLine(20,39,-36+2*wiggle[4],20); //back
        g.drawLine(80,61,90+wiggle[5],80); //front
        g.drawLine(80,39,121-wiggle[6],20); //front

	g.setColor(Color.yellow);
	g.fillOval(0,35,100,30);
	g.setColor(Color.blue);
	g.fillOval(5,37,90,26);


        g.setColor(Color.yellow);
	g.fillOval(100,35,30,30);
	g.setColor(Color.blue);
        g.fillOval(102,37,26,26);

	g.setColor(Color.red);
	g.fillOval(127,57,6,6); 
        g.fillOval(127,38,6,6);  
	g.drawOval(127,57,6,6); 
        g.drawOval(127,38,6,6);  

	g.translate(-t-pos,0);
    }
}








class ControlCanvas extends Canvas implements MouseListener {

    Animator A;
    MotionCanvas X;
    int mode;

    ControlCanvas() {
       setBackground(Color.black);
       addMouseListener(this);
    }


    ControlCanvas addAnimator(Animator An) {
	ControlCanvas Y=this;
	Y.A=An;
	return(Y);
    }

    ControlCanvas addMotionCanvas(MotionCanvas Xx) {
	ControlCanvas Y=this;
	Y.X=Xx;
	return(Y);
    }

    public void paint(Graphics g) {
	g.setColor(Color.blue);
	g.fillRect(210,15,30,30);
        g.setFont(new Font("TimesRoman",Font.PLAIN,30));
	g.setColor(Color.yellow);
	g.drawString("Rich: Applet 19",10,40);
        g.setColor(Color.yellow);
        g.setFont(new Font("TimesRoman",Font.PLAIN,15));
        g.drawString("click on the blue square",255,25);
        g.drawString("to stop/start the bug",255,43);
    }


    public void mouseReleased(MouseEvent e) {}
    public void mousePressed(MouseEvent e) {}
    public void mouseEntered(MouseEvent e) {}
    public void mouseExited(MouseEvent e) {}
    public void mouseClicked(MouseEvent e) {
	e.consume();
	Point p=new Point();
	p.x=e.getX();
	p.y=e.getY();
	try {
	  if((p.x>210)&&(p.x<250)&&(p.y>10)&&(p.y<40)) {
	    if(mode==0) A.suspend();
	    if(mode==1) A.resume();
	    mode=1-mode;
	  }
	}
	  catch(Exception x) {}
    }
  
}









class Animator extends Thread {
    private int count, parity;
    MotionCanvas X;

    public void run() {
	count=200;
        X.repaint();
	while(true) {
	    count=count+4;
	    if(count==600) count=200; 
	    X.B.pos=count; 
	    X.repaint();
	    try {sleep(20);}
	    catch(Exception e) {
		System.out.println(e.toString());
	    }
	}
    }

    Animator addMotionCanvas(MotionCanvas Xx) {
	Animator B=this;
	B.X=Xx;
	return(B);
    }

}