public void update() {
    // Update movement
    m.update();

    // If distance from first element if too big
    if (m.getPosition().dist(elements[0]) > elementChangeDist) {

      // Change values of all elements
      for (int i = elements.length - 1; i > 0; i--) {
        elements[i].set(elements[i - 1]);
        elementColors[i] = elementColors[i - 1];
      }

      // Set position and color of first element
      elementColors[0] = getColor();
      elements[0].set(m.getPosition());

      elementChangeDist = p.random(elementMinDist, elementMaxDist);
    }
  }
  public void init(PApplet processing, IWormMovement movement) {
    // Get parent
    p = processing;

    // Get movement
    m = movement;

    // Setup parts
    for (int i = 0; i < elements.length; i++) {
      // Position
      elements[i].set(m.getPosition());

      // Color
      elementColors[i] = getColor();
    }
  }
 public PVector getPosition() {
   return m.getPosition();
 }