Sample bounce;

int xspeed;
int yspeed;
int x;
int y;
int r;

//our setup function
void setup() {
  size(400,200);                  //define size
  xspeed = 3;                     //(int) random(-5,5);    //if we want random (note "random" gives us a float
  yspeed = 1;                     //(int) random(-5,5);    //so we have to "cast" it back into an "int")
  x = width/2;                    //initialize our x,y,r variables
  y = height/2;
  r = 10;
  Sonia.start(this); // Start Sonia engine.
  // create a new sample object.
  bounce = new Sample("ouch.wav");
}

void loop() {
  background(50);                 //first we draw the background
  ellipseMode(CENTER_DIAMETER);   //set our ellipse mode
  noStroke();
  fill(255,200,0);                //set ellipse color
  ellipse(x,y,r,r);               //draw ellipse

  //radius always decreases back to 10 if it's bigger
  if (r > 10) {
    r--;
  }
  //adjust x,y based on speed
  x = x + xspeed;
  y = y + yspeed;
  //acount for bouncing off edges
  if ((x > width) || (x < 0)) {
    xspeed = xspeed * -1;
    bounce.play();
    r = 30; //adjust radius when bouncing
  }
  if ((y > height) || (y < 0)) {
    yspeed = yspeed * -1;
    bounce.play();
    r = 30;
  }
}

// Safely close the sound engine upon Browser shutdown.
public void stop(){
  Sonia.stop();
  super.stop();
}