snakes

var cellsize = 15;

var gridsize = 12;

var size = 5;

​

var count = 3;

var inc = 0;

var snakes = [];

​

function setup() {

  background(40);

  colorMode(HSB,360,100,100,100);   

  init();

}

​

function init() { 

  size = gridsize * cellsize;

​

  var padding = 10;

  var border = 50;

​

  createCanvas((size * count) + ((count - 1) * padding) + border * 2, (size * count) + ((count - 1) * padding) + border * 2);

​

  noFill();

  strokeWeight(cellsize / 10);

  strokeCap(ROUND);

  frameRate(11);

​

  for (var y = 0; y < count; y++)

    for (var x = 0; x < count; x++)

      for (var i = 0; i < 10; i++)

        snakes.push(new Snake(x * size + x * padding + border, y * size + y * padding + border));

}

​

function draw() {

  noStroke();

  fill(5);

  rect(0,0,width,height,15);

  for (var i = 0; i < snakes.length; i++) {

    snakes[i].update();

    snakes[i].draw();

    if (snakes[i].dead) snakes[i] = new Snake(snakes[i].x, snakes[i].y);

  }

}

​

function Snake(x, y) {

  this.dead = false;

  this.x = x;

  this.y = y;

​

  var segCount = random(1, 20);

  var segs = [];

​

  var dir = p5.Vector.fromAngle(floor(random(10)) * (TWO_PI / 1)).mult(cellsize);

​

  //var size = gridsize*cellsize;

​

  var pos = createVector(Math.ceil(random(size) / cellsize) * cellsize, Math.ceil(random(size) / cellsize) * cellsize);

​

  var newPos = createVector(0, 0);

​

  segs.push(pos);

​

  this.update = function() {

    if (random() < 0.7) {

      dir.rotate(random() < 0.9 ? -2 : 2);

    }

​

    //move

    newPos = p5.Vector.add(pos, dir);

​

    segs.unshift(newPos);

    pos = newPos;

​

    if (segs.length > segCount) segs.pop();

  };

​

  var c = color(random(200, 240), random(1, 50), random(0, 100));

​

  this.draw = function() {

    stroke(c);

    this.dead = true;

​

    for (var i = 0; i < segs.length - 1; i++) {

      var s = segs[i];

      var e = segs[i + 1];

​

      if (s.x >= 0 && s.x <= size && s.y >= 0 && s.y <= size) {

        if (e.x >= 0 && e.x <= size && e.y >= 0 && e.y <= size) {

​

          line(s.x + this.x, s.y + this.y, e.x + this.x, e.y + this.y);

          line(s.y + this.x, s.x + this.y, e.y + this.x, e.x + this.y);

​

          line(size - s.x + this.x, s.y + this.y, size - e.x + this.x, e.y + this.y);

          line(size - s.y + this.x, s.x + this.y, size - e.y + this.x, e.x + this.y);

​

          line(s.x + this.x, size - s.y + this.y, e.x + this.x, size - e.y + this.y);

          line(s.y + this.x, size - s.x + this.y, e.y + this.x, size - e.x + this.y);

​

          line(size - s.x + this.x, size - s.y + this.y, size - e.x + this.x, size - e.y + this.y);

          line(size - s.y + this.x, size - s.x + this.y, size - e.y + this.x, size - e.x + this.y);

​

          this.dead = false;

        }

      }

    }

​

    stroke(35);

    noFill();

    rect(this.x, this.y, size, size, 5, 5, 5, 5);

  };

}