let pIndex;

let count = 10000;

​

function setup() {

  createCanvas(900, 900);

  d = pixelDensity();

  cols = ["#FFCF16"]

  molds = [];

  for(i = 0; i < count; i++){

    molds[molds.length] = new Mold(random(width / 2 - 20, width / 2 + 20), random(height / 2 - 20, height / 2 + 20));

  }

  strokeWeight(1);

  background(30);

}

​

function draw() {

  background(0, 5);

  stroke(255);

  noFill();

  strokeWeight(0.1)

  for(i = 0; i < 19; i++){

    stroke(cols[floor(random(cols.length))]);

    // circle(width / 2, height / 2, 50 * i);

  }

  strokeWeight(1);

  loadPixels()

  for(i = 0; i < molds.length; i++){

    molds[i].update();

  }

​

}

class Food{

  constructor(x, y){

    this.pos = createVector(x, y);

    this.size = random(20, 50);

  }

}

​

class Mold{

  constructor(x, y){

    this.pos = createVector(x, y);

    this.vel = createVector(1, 0);

    this.vel.setHeading(random(TWO_PI));

    this.senseDist = createVector(10, 0);

    this.senseDist.setHeading(this.vel.heading() - QUARTER_PI);

    this.lSense = p5.Vector.add(this.pos, this.senseDist);

    this.senseDist.setHeading(this.vel.heading() + QUARTER_PI);

    this.rSense = p5.Vector.add(this.pos, this.senseDist);

    this.senseDist.setHeading(this.vel.heading());

    this.fSense = p5.Vector.add(this.pos, this.senseDist);

    this.lV = 0;

    this.rV = 0;

    this.fV = 0;

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

    this.col = color(cols[this.c]);

  }

  update(){

    if(this.lSense.x > 0 && this.lSense.x < width && this.lSense.y > 0 && this.lSense.y < height){

      pIndex = 4 * (d * floor(this.lSense.y)) * (d * width) + 4 * (d * floor(this.lSense.x));

      this.lV = pixels[pIndex];

    }

    if(this.rSense.x > 0 && this.rSense.x < width && this.rSense.y > 0 && this.rSense.y < height){

      pIndex = 4 * (d * floor(this.rSense.y)) * (d * width) + 4 * (d * floor(this.rSense.x));

      this.rV = pixels[pIndex];

    }

    if(this.fSense.x > 0 && this.fSense.x < width && this.fSense.y > 0 && this.fSense.y < height){

      pIndex = 4 * (d * floor(this.fSense.y)) * (d * width) + 4 * (d * floor(this.fSense.x));

      this.fV = pixels[pIndex];

    }

    if(this.lV > this.rV && this.lV > this.fV){

      this.vel.setHeading(this.vel.heading() - QUARTER_PI)

    } else if(this.rV > this.lV && this.rV > this.fV){

      this.vel.setHeading(this.vel.heading() + QUARTER_PI)

    } 

    if(this.lV == this.fV && this.rV == this.fV && this.lV == this.rV){

      this.vel.setHeading(this.vel.heading() + random(-QUARTER_PI, QUARTER_PI))

    }

    this.pos.add(this.vel);

    this.pos.x = this.pos.x % width;

    this.pos.y = this.pos.y % height;

    // if(this.pos.x < 0 || this.pos.x > width || this.pos.y < 0 || this.pos.y > height){

    //   this.vel.setMag(-1);

    // }

    this.senseDist.setHeading(this.vel.heading() - QUARTER_PI);

    this.lSense = p5.Vector.add(this.pos, this.senseDist);

    this.senseDist.setHeading(this.vel.heading() + QUARTER_PI);

    this.rSense = p5.Vector.add(this.pos, this.senseDist);

    this.senseDist.setHeading(this.vel.heading());

    this.fSense = p5.Vector.add(this.pos, this.senseDist);

    stroke(this.col);

    point(this.pos.x, this.pos.y);

  }

}