AS2 to AS3 help

[krakatoa]

Hello guys,

I trying to convert the code below(AS2) to AS3. I guessing the onRollOver funtion (fade in and fade out) in AS3 is:

button.addEventListener(MouseEvent.ROLL_OVER, manageMouseOver, false, 0, true);
button.addEventListener(MouseEvent.ROLL_OUT, manageMouseOut, false, 0, true);
 
function manageMouseOver(event:MouseEvent):void{
  //your over code here
}
 
function manageMouseOut(event:MouseEvent):void{
  //your out code here
}

If yes any idea if I need to change something in the funtions fadeIn and fadeOut?

AS2:

/*Buttons Effect code */

function fadeIn (bgClip)
{
    bgClip.onEnterFrame = function ()
    {
        if (this._alpha < 100)
        {
            this._alpha += 20;
        }
    };
}
function fadeOut (bgClip)
{
    bgClip.onEnterFrame = function ()
    {
        if (this._alpha > 0)
        {
            this._alpha -= 20;
        }
    };
}
home_btn.onRollOver = function ()
{
    fadeIn (red);
};
home_btn.onRollOut = function ()
{
    fadeOut (red);
};
about_btn.onRollOver = function ()
{
    fadeIn (red2);
};
about_btn.onRollOut = function ()
{
    fadeOut (red2);
};
products_btn.onRollOver = function ()
{
    fadeIn (red3);
};
products_btn.onRollOut = function ()
{
    fadeOut (red3);
};
services_btn.onRollOver = function ()
{
    fadeIn (red4);
};
services_btn.onRollOut = function ()
{
    fadeOut (red4);
};
videos_btn.onRollOver = function ()
{
    fadeIn (red5);
};
videos_btn.onRollOut = function ()
{
    fadeOut (red5);
};
contact_btn.onRollOver = function ()
{
    fadeIn (red6);
};
contact_btn.onRollOut = function ()
{
    fadeOut (red6);
};

Thanks in advance.

[dmb85]

• Remove underscores from property names (_alpha becomes alpha)
• Properties that used to go from 0 to 100 now go from 0 to 1
• onEnterFrame needs to be an event listener like the MouseEvents: addEventListener( Event.ENTER_FRAME, functionName )

[krakatoa]

I tried that look:

/*Buttons Effect code */

addEventListener(Event.ENTER_FRAME, fadeIn);
function fadeIn(event:Event) {
if (this.alpha < 1)
     {
      this.alpha += .20;
     }
}

home_btn.addEventListener(MouseEvent.ROLL_OVER, manageMouseOver, false, 0, true);

 
function manageMouseOver(event:MouseEvent):void{
  fadeIn (red);
}

But i get the error:

Scene 1, Layer 'Actions', Frame 1, Line 26 1067: Implicit coercion of a value of type flash.display:MovieClip to an unrelated type flash.events:Event.

[dmb85]

Your fadeIn function needs modification:

function fadeIn(mc:MovieClip) {
if (mc.alpha < 1)
     {
      mc.alpha += .20;
     }
}

[krakatoa]

So'll be something like:

/*Buttons Effect code */

addEventListener(Event.ENTER_FRAME, fadeIn);
function fadeIn(mc:MovieClip) {
if (mc.alpha < 1)
    {
               mc.alpha += .20;
    }
}

home_btn.addEventListener(MouseEvent.ROLL_OVER, manageMouseOver, false, 0, true);
 
function manageMouseOver(event:MouseEvent):void{
  fadeIn (red);
}

cause this time I have this output:

TypeError: Error #1034: Type Coercion failed: cannot convert flash.events::Event@3a542511 to flash.display.MovieClip. 

I tried this:

import flash.display.MovieClip; in the second line, but nothing

[henke37]

Please go and learn about type safety. You are getting incorrect advice and are unable to tell the difference between bad and good advice.

Event listeners have exactly one argument, the event object. This is not the object that the event happened to, it is the object representing the event itself.

[dmb85]

Ok sorry I only skimmed your code the first time and didn't fully comprehend what you were trying to do. Undo what I said in my last post.

Your problem is that you've written the fadeIn function to be something called by an event listener, but then you try to call fadeIn here:

function manageMouseOver(event:MouseEvent):void{
  fadeIn (red);
}

You cant do this since you've defined fadeIn to receive an Event object, not a movieclip object. One way to fix it is to change it so that manageMouseOVer only adds/removes the ENTER_FRAME event listener.

With that said...

What you are trying to do would be better accomplished with a tweening engine like GreenSock TweenLite.