PFont fontA;
boolean pause;
boolean loose;
boolean init=true;

// variabili navetta
int xbase;
int basewidth = 40;
int baseheight = 10;
int basevel = 20;

// tempo
int t = 0;

// variabili proiettile
float vxball = 2;
float vyball = 6;
float xball;
float yball;
float xball0;
float yball0;
float rball = 5;

// punteggio
int score;

void setup()
{
 pause = false;
 loose = false;
 score = 0;
 size(240, 300);
 noStroke();
 fontA = loadFont("CourierNew36.vlw");
 textFont(fontA, 12);
 xbase = width/2 - basewidth/2;
 xball0 = width/2;
 yball0 = height - 10 - baseheight - rball;
}

void draw()
{
 if(init) {
   drawInit();
 }
 else if(pause) {
   drawPause();
 }
 else {
   fill(255);
   rect(10,10,width-20,height-20);
   fill(25);
   rect(10,8,width-20,6);
   fill(40);
   rect(xbase, height-20, basewidth, baseheight);

   drawBall();
 }
}

void keyPressed()
{
 if(keyCode == LEFT) {
  if(xbase>(basevel+10)) {
    xbase = xbase - basevel;
  }
  else xbase = 10;
 }
 else if(keyCode == RIGHT) {
  if(xbase<(width-10-basewidth-basevel)) {
    xbase = xbase + basevel;
  }
  else xbase = width-basewidth-10;
 }
 else if(key == 'p' && !loose) {
  pause = !pause;
 }
 else if(key == 'r' && loose) {
  init=false;
  setup();
 }
 else if(key == 's' && loose) {
  String score_string;
  score_string = ""+score; 
  link("http://web2.otto.to.it/abidibo/index.php?evt[processing-savePlayer]&score="+score_string);  
 }
 else if(key == 'i') {
  init = false;
 }
}

void drawBall() {
 boolean collision;

 xball = xball0 + vxball*t;

 yball = yball0 - vyball*t;

 ellipse(xball, yball, rball, rball);
 fill(10);
 t = t+1;

 checkCollision(xball, yball, rball);
}

boolean checkCollision(float x, float y, float r) {

 // se la pallina impatta con la n

 // impatto parete destra
 if(x>(width-10-r)) {
   t=1;
   yball0=yball;
   xball0=xball;
   vxball=-vxball;
   return true;
 }

 // impatto parete sinistra
 if(x<(10+r)) {
   t=1;
   yball0=yball;
   xball0=xball;
   vxball=-vxball;
   return true;
 }

 // impatto navetta
 if(x>xbase && x<(xbase+basewidth) && y>(height- 10 - baseheight) && y<(height- 10 - baseheight + abs(vyball))) {
   t = 1;
   xball0 = xball;
   yball0 = yball;
   vyball = -vyball;
   return true;
 }

 // impatto parete superiore
 if(y<(10+rball+vyball+1)) {
   score = score + 1;
   t = 1;
   xball0 = xball;
   yball0 = yball;
   vyball = -vyball;
   float coin = random(-1,1);
   int sign;
   if(coin>0) sign=1;
   else sign = -1;
   vxball = vxball*random(0.5,1.8)*sign;
   
   if(vxball<0.1 && sign==-1) vxball = 1;
   
   return true;
 }

 // impatto parete inferiore sconfitta
 if(y>(height-10-baseheight+abs(vyball))) {
   t=0;
   xball0 = xball;
   yball0 = yball;

   drawLoose();
 }

 return false;

}

void drawInit() {
 fill(0);
 text("Ciao", 20, 30);
 text("Controlli", 20, 50);
 text("frecce -> sinistra destra", 20, 70);
 text("i -> inizia", 20, 90);
 text("p -> pausa", 20, 110);
}

void drawPause() {
 fill(0);
 text("premi p per riprendere", 20, 30);
}

void drawLoose() {
 fill(0);
 text("Hai perso",20, 30);
 text("manigoldo", 20, 50);
 text("punteggio: "+score, 20, 70);
 text("premi s per salvare", 20, 90);
 text("premi r per rigiocare", 20, 110);
 loose = true;
}