constructor(x, y, index){

    this.pos = createVector(x, y);

    this.vel = createVector(1, 0);

    this.acc = createVector(2, 0);

    this.acc2 = createVector(1, 0);

    this.vel.setMag(random(3));

    this.acc.setMag(random(3));

    this.acc2.setMag(random(3));

    this.index = index;

    this.c = floor(random(cols.length));

    this.col = color(cols[c]);

    angleMode(DEGREES);

    this.vel.setHeading(random(360));

    this.acc.setHeading(random(360));

    this.va = 0;

    this.aa = 0;

    this.va1 = 0.01;

    this.aa1 = 0.0275;

    this.w = 2;

    this.npos = undefined;

  }

  update() {

    this.va = this.va + this.va1;

    this.aa = this.aa + this.aa1;

    this.vel.setHeading(this.va);

    this.acc.setHeading(this.aa);

    this.vel.add(this.acc);

    this.vel.limit(6);

    this.npos = p5.Vector.add(this.pos, this.vel);

    stroke(0);

    strokeWeight(2);

    line(this.pos.x, this.pos.y, this.npos.x, this.npos.y);

    this.pos.add(this.vel);

    this.w = this.vel.mag();

    if(this.pos.x > width){

      this.pos.x = 0;

    }

    if(this.pos.y > height){

      this.pos.y = 0;

    }

    if(this.pos.x < 0){

      this.pos.x = width;

    }

    if(this.pos.y < 0){

      this.pos.y = height;

    }

  }

  show() {

    // this.col = color(cols[this.c]);

    // // this.col.setAlpha(10);

    // stroke(this.col);

    // strokeWeight(2);

    // point(this.pos.x, this.pos.y);

  }

}