constructor(x, y){

    this.x = x;

    this.y = y;

    this.c = color(random(255), random(255), 255);

    this.t = millis();

    this.maxSize = 300;

    this.rippleSpace = 20;

  }

  display(){

    let timeElapsed = millis() - this.t;

    noFill();

    for (let i = 0; i < min(timeElapsed, this.maxSize); i += this.rippleSpace){

      stroke(this.c);

      ellipse(this.x, this.y, i, i);

    }

  }

}