# Loops and Arrays

**URL:** <https://forum.kirupa.com/t/loops-and-arrays/191489>\
**Category:** flash\
**Created:** [June 20, 2006, 10:57pm UTC](https://forum.kirupa.com/t/loops-and-arrays/191489 "2006-06-20T22:57:29Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![azik1uk](https://avatars.discourse-cdn.com/v4/letter/a/e0b2c6/32.png) [@azik1uk](https://forum.kirupa.com/u/azik1uk)\
**Post date:** [June 20, 2006, 10:57pm UTC](https://forum.kirupa.com/t/loops-and-arrays/191489/1 "2006-06-20T22:57:29Z")

</div>

Hi,

I have 3 balls and i want them to turn around a center point.

The physics is right but I’m finding confusing how to apply the equation to any object of my array.

Here it goes the code:

```auto
var movies = ["ball_mc", "ball2_mc", "ball3_mc"];
var angle:Number = 0;
var centerX:Number = center_mc._x;
var centerY:Number = center_mc._y;
var radius:Number = 100;
var speed:Number = .1;
for (var i = 0; i<movies.length; i++) {
    onEnterFrame = function () {
        movies[0]._x = centerX+Math.cos(angle)*radius;
        movies[0]._y = centerY+Math.sin(angle)*radius;
        angle += speed;
    };
}

```

Anyone?