constructor(x, y) { 

this.x = x;

this.y = y;

this.xvel = random(2, 4);

this.yvel = -3;

this.r = 15;

}

move() {

  this.y -= this.yvel

  this.x += this.xvel

  this.yvel -= grav

}

bounce() {

    if (this.x >= 500-this.r/2){

      this.xvel = -this.xvel}

    if(this.x <= this.r/2){

      this.xvel = -this.xvel}

    if (this.y >= 600-this.r/2){

      this.yvel = -this.yvel-0.25}

    if(this.y <= this.r/2){

      this.yvel = -this.yvel}

}

display() {

fill(200, 34, 123); 

ellipse(this.x, this.y, this.r, this.r);

}

}