APPLET CASSE BRIQUE

   import java.awt.*;
   import java.awt.event.*;
   import java.applet.*;
   import java.awt.Graphics;
   import java.awt.Point;
   import java.awt.Event;
   import java.lang.Math;
   import java.util.*;
   import java.io.*;

    public class pong extends Applet implements Runnable{
   
      boolean jeu = false, rebon=false, perdu=false, encours=false, casse=false;
      static int size,score=0, hscore=0;
   
      Point[] places = new Point[36];
      static int dy, dx;
      static int dir =0;  //0 - arret
   					 // >0 - droite
                	 // <0 - gauche
      Point tmp = new Point(0,0);
      Point raquette = new Point(0,0);
      Point  balle = new Point(0,0);
   
      Thread runner;
   
       public void init() {
         raquette.move(250,275);
         balle.move(250,260);
         score = 0;
         baballe();
        int p = 0;     
         for(int i=1; i<10; i++){
            for (int j=1; j<5; j++) {
               places[p] = new Point(i*50,j*25);
               p++;
            }
         }	
      
      }
   
       public void start() {
         if(runner==null) {
            runner = new Thread(this);
            runner.start();
         }
      }
   
       public void stop() {
         if(runner!=null) {
            runner.stop();
            runner = null;
         }}
       public void run() {
      
         while(true) {
         
          //rebond cotes
            if (balle.x < (0-dx) || balle.x>(500-dx))
               dx = -dx;
            if (balle.y < (5-dy))
               dy = -dy;
         
         //sur la raquette ?	
            if (balle.y>(265-dy) && balle.y<(280)&&((balle.x>=raquette.x-25 && balle.x<=raquette.x+25)||(balle.x>=raquette.x-30 && balle.x<=raquette.x+25 && dx>0)||(balle.x>=raquette.x-25 && balle.x<=raquette.x+30 && dx<0))) {
               score +=3;
               dy = -dy;
            	//si pres du bord, faire un rebon special
               if (balle.y>270 || balle.x<raquette.x-22 ||balle.x>raquette.x+22 ){
                  dx = (int) Math.round(Math.sqrt(2)*dx);
                  if ((balle.x>=raquette.x-30 && balle.x<=raquette.x-22 && dx>0 )||(balle.x>=raquette.x+22 && balle.x<=raquette.x+30 && dx<0 ))
                     dx = -dx;
               }
            
            }
         
         
         //Casse une brique ???
            for (int h = 0; h<36; h++) {
               if (places[h].x > 0 && places[h].y>0) {
                  if (balle.x <= (places[h].x+23) && balle.x >= (places[h].x-23)) {
                     if (balle.y < (places[h].y+12-dy) && balle.y > (places[h].y-12-dy)) {
                        score +=5;
                        places[h].move(0,0);
                        dy =- dy;
                        casse = true;
                        break;
                     
                     }
                  } 
                  //a cause des imprecisions, on teste dans l'autre sens
                  else {
                     if (balle.y <= (places[h].y+12) && balle.y >= (places[h].y-12)) {
                        if (balle.x < (places[h].x+23-dx) && balle.x > (places[h].x-23-dx)) {
                           score +=5;
                           places[h].move(0,0);
                           dx =- dx;
                           casse = true;
                           break;
                        }
                     
                     }
                  }
               }
            }
         
          // Perte
            if (balle.y >= 295){
               encours = false;
               perdu = true;
               balle.move (balle.x - 1*dx, balle.y - 1*dy);
               raquette.move (raquette.x - 1*dir, 275);
            
            }
         
         // Reinitialisation
         
            if (encours) {
               if(perdu) {
                  jeu = false;
                  perdu = false;
                  dir =0;
                  raquette.move(250,275);
                  balle.move(250,260);
                  baballe();
               	if (score >hscore) hscore = score;
                  score = 0;
                  int p = 0;     
                  for(int i=1; i<10; i++){
                     for (int j=1; j<5; j++) {
                        places[p] = new Point(i*50,j*25);
                        p++;
                     }
                  }	            
               }
            }
            repaint();
         
            try{ Thread.sleep(45); }
                catch(InterruptedException e) { }
         
         }
      }
   
       public void update(Graphics g) {
         g.setColor(Color.black);
         g.fillRect(0,0,size().width, size().height); 
         int coltmp = 0;
         for (int i = 0; i<36; i++)
         {
            g.setColor (new Color(255,coltmp,0));
            coltmp += 6;
            if (places[i].x >0 && places[i].y >0)
               g.fillRect(places[i].x-20,places[i].y-10, 40,20);
         }
      
         if (!encours && !perdu) {
            g.setColor (Color.red);
            g.drawString("Clic puis S pour demarrer, <- et -> pour diriger, et P pour Pause",65,175);
         }
      
         if (perdu) {
            g.setColor (new Color(255,215,0));
            String mess = "Perdu !!!  Votre score : "+score;
            int postring = (int) Math.round((400 - mess.length())/2);
            g.drawString(mess,postring,150);
            g.setColor (Color.red);
            if (score > hscore) g.drawString("Felicitations !!! Vous avez battu le meilleur score !!",115,175);
            	         
         }
      
         if (!perdu) {
            if(jeu) {
               tmp.move(raquette.x+dir,raquette.y);
               raquette.move(tmp.x,tmp.y);
               if (raquette.x <=0) {raquette.move (0,275); dir=0;}
               if (raquette.x >=500) {raquette.move (500,275); dir=0;}
               balle.move(balle.x+dx, balle.y+dy);
               g.setColor (new Color(255,215,0));
               g.drawString("Score: "+score+"          Meilleur score de cette session: "+hscore,10,10);
            
            
            
            
            }
         }
      
         g.setColor (new Color(255,215,0));
         g.fillRect(raquette.x-25, raquette.y-5, 50,10);
         g.setColor(Color.red);
         g.fillOval(balle.x-5, balle.y-10,10,10);
      
      }
      
   
       public boolean keyDown(Event evt, int key) {
         if(key == Event.RIGHT) { 
            if(dir == -13)dir=0;
            else dir = 13;
            return true; }
         else if(key == Event.LEFT) {    
            if(dir == 13)dir=0;
            else dir=-13;
            return true; }
         
         else if(key == 112 || key == 1508) {
            if (jeu) jeu=false; 
            else if (encours) jeu=true;
            return true;
         }
         else if(key == 115) {
            encours = true; jeu =true;
            return true;
         }
         dir=0;
         return false;
      }
   
       public static void baballe() {
         double rnd = Math.random()*77+36;
         int vers = (int) Math.round(Math.random());
         int vert = (int) Math.round(Math.random());
         dx = (int) Math.round(Math.sqrt(rnd));
         dy = (int) Math.round(Math.sqrt(169-rnd));
         if (vers==0) dx = -dx;
         if (vert==0) dy = -dy;
      }
   }