construcor() {

    this.x = 300;

​

    this.y = 200;

​

    this.xspeed = 4;

​

    this.yspeed = -3;

  }

}

​

​

 move() {

  x = x + xspeed;

  y = y + yspeed;

}

​

 bounce(){

  if (x > width || x < 0) {

    xspeed = xspeed * -1;

  }

​

  if (y > height || y < 0) {

    yspeed = yspeed * -1;

  }

}

​

display(){

  stroke(255);

  strokeWeight(4);

  fill('#2196F3');

  ellipse(x, y, 24, 24);

​

}

​