[grim_squeaker_x]

NPC Code:

---

if (created) {

  setimg light2.png;

  setcoloreffect 0.5,0.5,0.5,0.9;

  setzoomeffect 0.1;

  timeout=0.05;

  this.speed=0.5;

}

if (timeout) {

  this.i=(this.i+1)%20;

  if (this.i==0) this.dir=int(random(0,4));

  if (!((x in |0,63)||(y in |0,63|))) this.dir=(this.dir+2)%4;

  x+=vecx(this.dir)*this.speed;

  y+=vecy(this.dir)*this.speed;

  timeout=0.05;

}

---

Should work, although I haven't scripted in months so it might not actually work...