Random walker through points

Processing Coding Questions
4

Thank you Chrisir, that right, and I also spotted that I didn’t sub the target with the pos. Thank you for your input.

  void update(ArrayList<Anchor> anchors) {
    if (anchors.size()>0) {
      int idx = getNearest(anchors);
      println(""+idx);
      Anchor a = anchors.get(idx);
      PVector target = a.pos;
      PVector move = target.sub(pos);
      previousPos.set(pos);
      pos.add(move);
      anchors.remove(idx);
    }
  }

  int getNearest(ArrayList<Anchor> anchors) {
    float record = 1000;
    int idx=0;
    for (int i = 0; i < anchors.size(); i++) {
      Anchor anchor = anchors.get(i);
      float dist = pos.dist(anchor.pos);
      if (dist < 10) {
        if (dist < record) {
          dist = record;
          idx = i;
          if (idx == 0){break;}
        }
      }
    }
    return idx;

I am getting closer to the desired solution :); A problem remains when the walker doesn’t find a smaller distance, the index becomes zero, so the walker jumps to the next zero of the list.

gol_0003
gol_0003800×800 167 KB

Furthermore, I am trying to stop the process if;

  • the walker doesn’t find a point close enough
  • the walker has to jump on another walker path

I would like to implement this kind of code on a mesh later on

thank you again :slight_smile:

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