Tutorial | Animating with Physics and AS3
by Carlos Pinho, June 5th, 2008

This tutorial is for anyone who wants to learn how to animate objects with the help of some simple physics. All done by Actionscript 3.0 of course.

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This entry was posted on Thursday, June 5th, 2008 at 11:38 pm and is filed under Flash, Tutorials. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.

2 Responses to “Tutorial | Animating with Physics and AS3”

  1. jodi Says:
    October 4th, 2008 at 4:36 am

    I am so confused how I can use an illustrator file (image) with an as file (movement). Here is the as file to animate a simple red ball

    package
    {
    import flash.display.Sprite;
    import flash.events.Event;

    public class Bobbing extends Sprite {
    private var ball:Ball;
    private var angle:Number = 0;
    private var centerY:Number = 200;
    private var range:Number = 50;
    private var speed:Number = .1;

    public function Bobbing() {
    init();
    }
    private function init():void {
    ball = new Ball();
    addChild(ball);
    ball.x = stage.stageWidth / 2;
    addEventListener(Event.ENTER_FRAME, onEnterFrame);
    }
    public function onEnterFrame(event:Event):void {
    ball.y = centerY + Math.sin(angle) * range;
    angle += speed;
    }
    }
    }

  2. jodi Says:
    October 4th, 2008 at 4:36 am

    package
    {
    import flash.display.Sprite;
    import flash.events.Event;

    public class Bobbing extends Sprite {
    private var ball:Ball;
    private var angle:Number = 0;
    private var centerY:Number = 200;
    private var range:Number = 50;
    private var speed:Number = .1;

    public function Bobbing() {
    init();
    }
    private function init():void {
    ball = new Ball();
    addChild(ball);
    ball.x = stage.stageWidth / 2;
    addEventListener(Event.ENTER_FRAME, onEnterFrame);
    }
    public function onEnterFrame(event:Event):void {
    ball.y = centerY + Math.sin(angle) * range;
    angle += speed;
    }
    }
    }

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