this.pos = p.createVector(random(p.width), random(p.height));

  this.vel = p.createVector(0, 0);

  this.acc = p.createVector(0, 0);

  this.maxspeed = 4;

  this.col = p5.Color;

  //this.col = (random(250, 325), 100, 100);

  //this.col.setAlpha(5);

​

​

  this.prevPos = this.pos.copy();

​

  this.update = function(color1, color2) {

    this.vel.add(this.acc);

    this.vel.limit(this.maxspeed);

    this.pos.add(this.vel);

    this.acc.mult(0);

​

    var xin = this.pos.x / p.width;

    var yin = this.pos.y / p.height;

    var zin = (xin / 2) + (yin / 2);

    this.col = p.lerpColor(color1, color2, zin);

    this.col.setAlpha(5);

  }

​

  this.gradient = function(particles) {

    var perceptionRadius = 2;

    var total = 0;

    for (let other of particles) {

      let d = dist(this.position.x, this.position.y, other.position.x, other.position.y);

      if (other != this && d < perceptionRadius) {

        total++;

      }

    }

​

  }

  this.follow = function(vectors) {

    var x = floor(this.pos.x / scl);

    var y = floor(this.pos.y / scl);

    var index = x + y * cols;

    var force = vectors[index];

    this.applyForce(force);

​

​

  }

​

  this.applyForce = function(force) {

    this.acc.add(force);

  }

​

  this.show = function() {

    // this.col.x = map(this.pos.x, 0, width, 50, 255);

    // this.col.z = map(this.pos.y, 0, height, 130, 255);

​

​

    //stroke(this.col.x, this.col.y, this.col.z, 5);

    p.stroke(this.col, 5);

​

    p.strokeWeight(1);

    p.line(this.pos.x, this.pos.y, this.prevPos.x, this.prevPos.y);

    //point(this.pos.x, this.pos.y);

    this.updatePrev();

  };

​

  this.updatePrev = function() {

    this.prevPos.x = this.pos.x;

    this.prevPos.y = this.pos.y;

  }

  this.edges = function() {

    if (this.pos.x > p.width) {

      this.pos.x = 0;

      this.updatePrev();

    }

    if (this.pos.x < 0) {

      this.pos.x = p.width;

      this.updatePrev();

    }

    if (this.pos.y > p.height) {

      this.pos.y = 0;

      this.updatePrev();

    }

    if (this.pos.y < 0) {

      this.pos.y = p.height;

      this.updatePrev();

    }

  }

​

​

​

​

}