int x, y, t;

int d = 1;

void setup() {
  x = width / 2;
  y = height / 2;
  t = 0;
//  randomSeed(0);
}

void draw() {
  t += 1;
  float r = random(1);
  if (r < 0.25) {
    x += d;
  } else if (r < 0.5) {
    x -= d;
  } else if (r < 0.75) {
    y += d;
  } else {
    y -= d;
  }
  point(x, y);
  println(t + " " + x + " " + y);
}