package shotcaller;

import java.awt.*;
import java.applet.*;
import java.util.*;
import javax.swing.*;
import java.math.*;
import java.awt.event.*;
import javax.swing.event.MouseInputAdapter;

public class shot extends Applet  {
    
    public void mouseMoved(MouseEvent e){
       x = e.getX(); 
       y = e.getY(); 
        
    }
            
    public class cue
 {
        int x;
        int y;
        
    }

    
    public class ball {
        
        double grav =.6;
        double damp =.98;
        int rad = 12;
        double x;
        double y;
        double vx =0;
        double vy =0;        
        int m = 3;
        
        
    }
    
    int i = 0;
    int j = 0;
    Object ball;
    int bmax = 8;
    ball[] b = new ball [8];

            
            public void fold(){
                
                for (i= 0; i < bmax; i++){
                    b[i] = new ball();
            }
         
        b[0].x=70;
	b[1].x=387;
	b[2].x=414;
	b[3].x=444;
	b[4].x=444;
	b[5].x=444;
	b[6].x=414;
        b[7].x=-100;
	b[0].y=132;
	b[1].y=132;
	b[2].y=117;
	b[3].y=103;
	b[4].y=134;
	b[5].y=165;
	b[6].y=150;
        b[0].vx+=40;
}    
            

            
            public int x = 0;
            public int y = 0;
            java.util.Timer timer;
            Graphics doublebuffer;
            Image offscreen;
            private final int WIDTH =550;
            private final int HEIGHT = 300;
            
                public void init(){
                fold();
           
            cue c = new cue();
                this.setSize(WIDTH,HEIGHT);
                timer = new java.util.Timer();
                timer.schedule(new gameTask(),0,1*5);
                offscreen = createImage(640,480);
                doublebuffer = offscreen.getGraphics();
            }

            class gameTask extends TimerTask
            {
               
                public void run(){
                    
                    
                      repaint();

                    for (i = 0; i<8; i++){
                                   
                if(b[i].x>520){
			b[i].vx*=-1;
		}
		if(b[i].y>270){
			b[i].vy*=-1;
		}if(b[i].y<10){
			b[i].vy*=-1;
		}
		if(b[i].x<10){
			b[i].vx*=-1;
		}
                      
                        b[i].vx*=b[i].damp;
                        b[i].vy*=b[i].damp;
                        b[i].x +=b[i].vx;
                        b[i].y +=b[i].vy;
                        
                        for (j=1; j<8; j++){
                        
                       double dx = b[j].x-b[i].x;
                       double dy = b[j].y-b[i].y;
                       
                       double dist = Math.sqrt(dx*dx+dy*dy);
                       
                       if(dist <b[i].rad+b[j].rad){
                           
                           double angle = Math.atan2(dy,dx);
                    
                       double cosa = Math.cos(angle);
                       double sina = Math.sin(angle);
                       double vx1p = cosa*b[i].vx+sina*b[i].vy;
                       double vy1p = cosa*b[i].vy-sina*b[i].vx;
                       double vx2p = cosa*b[j].vx+sina*b[j].vy;
                       double vy2p = cosa*b[j].vy-sina*b[j].vx;
                        double P = vx1p*b[i].m+vx2p*b[j].m;
                        double V = vx1p-vx2p;
                        vx1p = (P-b[j].m*V)/(b[i].m+b[j].m);
                        vx2p = V+vx1p;
                        b[i].vx = cosa*vx1p-sina*vy1p;
                        b[i].vy = cosa*vy1p+sina*vx1p;
                        b[j].vx =cosa*vx2p-sina*vy2p;
                        b[j].vy = cosa*vy2p+sina*vx2p;
                        
                        double diff =((b[i].rad+b[j].rad)-dist)/2;
                               double  cosd=cosa*diff;
                               double sind = sina*diff;
                               b[i].x-=cosd;
                               b[i].y -= sind;
                               b[j].x += cosd;
                               b[j].y += sind;
                           
                       }}}
                      
                }
                
            }
 public void update (Graphics g)
 {
     paint (g);
 }
 public void paint(Graphics g)
 {
     
     doublebuffer.clearRect(0,0,550,300);
     doublebuffer.setColor(Color.black);
     doublebuffer.fillRect(0,0,550,300);
     doublebuffer.setColor(Color.green);
     doublebuffer.fillRoundRect(10,10,530,280,30,30);
     doublebuffer.setColor(Color.darkGray);
     doublebuffer.fillOval(0,0,30,30);
     doublebuffer.fillOval(0,270,30,30);
     doublebuffer.fillOval(520,0,30,30);
     doublebuffer.fillOval(520,270,30,30);
     doublebuffer.fillOval(260,0,30,30);
     doublebuffer.fillOval(260,270,30,30);
     for (i=0; i<8; i++){
         
            if(i==0){
           doublebuffer.setColor(Color.white);   
          }
          if(i==1){
           doublebuffer.setColor(Color.lightGray);   
          }
             if(i==2){
           doublebuffer.setColor(Color.red);   
          }
             if(i==3){
           doublebuffer.setColor(Color.blue);   
          }
             if(i==4){
           doublebuffer.setColor(Color.orange);   
          }
             if(i==5){
           doublebuffer.setColor(Color.magenta);   
          }
             if(i==6){
           doublebuffer.setColor(Color.yellow);   
          }
             if(i==7){
           doublebuffer.setColor(Color.black);   
          }
             if(i==8){
           doublebuffer.setColor(Color.lightGray);   
          }
         doublebuffer.fillOval((int)b[i].x,(int)b[i].y,24,24);
     }
     doublebuffer.setColor(Color.red);
     doublebuffer.fillRect(20,20,x,y);
     g.drawImage(offscreen,0,0,this); 
  
 }

}