[Saga2001]

Are you talking about this:

NPC Code:

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for(i = 0; i<25; i++ {

 this.mv+=.25;

 this.x = 32+cos(this.mv)*5;

 this.y = 32+sin(this.mv)*5;

 showimg i,door.png,this.x,this.y;

}

---

?
cos and sin are reverse of eachother, so that means when cos is going up sin is going down on the same number.