random walk 3D [4 choices]

Random Walk 1.2
Inspired by “The Nature of Code” by Daniel Shiffman and it’s python translator Jake Hebbert.
Using C# in Grasshopper for Rhinoceros

//	Philipp Siedler
//	Daniel Shiffman "The Nature of Code"
//	Random Walk 1.2

 private void RunScript(int seed, int time, ref object A)
  {
    List <Point3d> pList = new List<Point3d>();

    Walker w = new Walker();
    Random random = new Random(seed);

    for(int i = 0; i < time; i++){
      int rnd = random.Next(0, 6);
      w.step(rnd);
      pList.Add(w.pos());
    }

    A = pList;
  }

public class Walker
  {
    public int x;
    public int y;
    public int z;
    public int rnd;

    public Walker(){
      x = 0;
      y = 0;
      z = 0;
      rnd = 0;
    }

    public Point3d pos(){
      Point3d posPt = new Point3d(x, y, z);
      return posPt;
    }

    public int step(int rnd){
      int choice = rnd;
      if (choice == 0){
        x++;
      }
      else if( choice == 1){
        x--;
      }
      else if(choice == 2){
        y++;
      }
      else if(choice == 3){
        y--;
      }
      else if(choice == 4){
        z++;
      }
      else if(choice == 5){
        z--;
      }

      return choice;
    }
  }

Output: