Identify MovieClip in AS3 among DisplayObjectContainer

actionscript-3displayobjectflashflashdevelopmovieclip

in ActionScript 3, if I loop through the children of a movie clip, it will return a DisplayObjectContainer, which is a list of DisplayObjects.

However, the AS3 typeof cannot identify MovieClip as MovieClip is now an object, instead of a data type. How can I correctly identify MovieClip?

I found 3 solutions online:

Solution 1 (the solution I am using):

First set the MovieClip name to a
specific name, then in the iterate
process, check the name of children
using child.name.indexOf("specificName") > -1

Solution 2:

use child.hasOwnProperty("numChildren") to identify a MovieClip

Solution 3:

use 3rd party plug-in like FlashDevelop

which solution is the best? or is there any alternatives?

Best Answer

It's actually much improved and simplified in AS3. You can simply use the "is" operator:

for(var i:int = 0; i < containerObj.numChildren; i++) {
    if(containerObj.getChildAt(i) is MovieClip) {
        // do something
    }
}

The Flash livedocs for this topic have some more detail.

Related Solutions

R – How to access another Movieclip from a Movieclip using AS3

You could check the distance from your hero's x position to his/her enemy.x position.

Try something like this...

var dx:Number = item.x-item2.x;
var dy:Number = item.y-item2.y;

if (Math.sqrt(dx*dx+dy*dy) < what_ever_distance) {
   //do something
}

AS3- Buttons controlling timeline not working inside MovieClip

It looks like you're assigning button listeners to buttons that aren't on the stage at the point you're declaring them. Move this code below your tween code on frame 30 and it should work:

top_mc.gowang_btn.addEventListener(MouseEvent.CLICK, clickGowang);
top_mc.ayame_btn.addEventListener(MouseEvent.CLICK, clickAyame);
top_mc.evora_btn.addEventListener(MouseEvent.CLICK, clickEvora);
top_mc.rogin_btn.addEventListener(MouseEvent.CLICK, clickRogin);
top_mc.toraz_btn.addEventListener(MouseEvent.CLICK, clickToraz);
top_mc.naomi_btn.addEventListener(MouseEvent.CLICK, clickNaomi);
top_mc.rummy_btn.addEventListener(MouseEvent.CLICK, clickRummy);
top_mc.teeth_btn.addEventListener(MouseEvent.CLICK, clickTeeth);
top_mc.sichan_btn.addEventListener(MouseEvent.CLICK, clickSichan);

Since your 'characters_mc' is on the stage at that frame, they're available to accept those listeners (since they didn't exist when you tried declaring them before).

Best Answer

Related Solutions

R – How to access another Movieclip from a Movieclip using AS3

AS3- Buttons controlling timeline not working inside MovieClip

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