float x = 0;
float d = 0.98;
float move = 0;
float y = 0;
float ycons;
float z = 0.98;

void setup(){
  size(500, 500);
  ellipseMode(CENTER);
}
void draw() {
  background(0);
  rotat();
  bombdisp();
  bounce();
}
//if the y value changes, it makes stuff rotate in that form
// put the rotat and y in one variable -- > then bounce!
// pair rotat and display together, make the y
void rotat() {
  translate(250,250);
  println(move);
  move += PI/200;
  rotate(PI + move);
}
void bounce() {
  y = y + d;
  d = d + z;
  // When it hits the ground, it "bounces" (changes trajectory)
  //println(d);
  if (y >= height) {
    d = -d;
    d = d + (2.857 * z);
  }

}

void bombdisp() {
  ycons = (int)constrain(y, 0.0, height);
  fill(0);
  ellipse(x, y, 30, 30);
  println(x);
  println(y);
  fill(100, 100, 5);
  stroke(255, 255, 0);
  strokeWeight(2);
  arc(x-10, y, 10, 10, 0.5, PI+0.5);
  arc(x+10, y, 10, 10 ,-0.5, PI-0.5);
}