// Theme and Variation
// John F Clavin -- February 7, 2017

var randomArray = [];
var timeCounter = 0;
var timeCount = 2;
var x;
var y;
var delta_x = 0;
var delta_y = 0;

function setup() {
  createCanvas(800, 800);
  frameRate(30);
  background(200);
  noStroke();
  x = width / 2;
  y = height / 2;
  for (var index = 0; index < 2100; index++) {
    var srn = int(random(10));
    randomArray[index] = srn;
  }
}

function draw() {
  var noVariation = false;
  var variation = true;
  fill(20);
  delta_x = 0;
  delta_y = 0;
  x = width / 4;
  y = height;
  createLine(noVariation);
  fill(170, 0, 0);
  delta_x = 0;
  delta_y = 0;
  x = width / 2;
  y = height;
  createLine(variation);
  fill(0, 120, 0);
  delta_x = 0;
  delta_y = 0;
  x = width / 4 * 3;
  y = height;
  createLine(variation);
  noLoop();
}

function mousePressed() {
  background(200);
  for (var index = 0; index < 2100; index++) {
    var srn = int(random(10));
    randomArray[index] = srn;
  }
  loop();
}

function createLine(varTru) {
  var variationTrue = varTru;
  var i = 0;
  for (var j = 0; j < 2000; j++) {
    if (timeCounter > 0) {
      timeCounter--;
      x = x + delta_x;
      y = y + delta_y;
      ellipse(x, y, 3, 3);
    } else {
      if (randomArray[i] === 0) {
        delta_x = 0;
        delta_y = -1;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 1) {
        delta_x = -1;
        delta_y = -1;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 2) {
        delta_x = 0;
        delta_y = -1;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 3) {
        delta_x = 1;
        delta_y = -1;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 4) {
        delta_x = 1;
        delta_y = 0;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 5) {
        delta_x = 1;
        delta_y = 1;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 6) {
        delta_x = 0;
        delta_y = -1;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 7) {
        delta_x = -1;
        delta_y = 1;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 8) {
        delta_x = -1;
        delta_y = 0;
        timeCounter = timeCount * randomArray[i + 1];
      } else if (randomArray[i] == 9) {
        delta_x = 0;
        delta_y = -1;
        timeCounter = timeCount * randomArray[i + 1];
      }
      if (variationTrue) {
        timeCounter = timeCounter + int(random(-8, 8));
      }
      i = i + 2;
    }
  }
}