sliding doors.

[spi]

I need a sliding door script that slides over 3 tiles left. And another that slides over 3 tiles right.

I believe there was one like

NPC Code:

---

f (housegateopen) {

  set gateisopen;

  play stonemove.wav;

  for (i=0; i<64; i++) {

    x += 1/16;

    sleep 0.05;

  }

}

---

but i can't figure out how to get that to move exactly 3 tiles. :|
(I want the stonemove.wav to play in it, too.)
Thanks.