Playing random sound in array

Report · Apr 05, 2013

Hey guys,

I'm new to AS3, still learning. I just read a little about arrays in the book I was learning from, and after looking at some online stuff, thought I'd try to do something simple with one.

What I'm trying to do is save a bunch of sounds (different dog barks) in an array and then when I press the button, it plays a random sound from that array. Here's what I have so far :

-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

package

{

import flash.media.Sound;

import flash.media.SoundChannel;

import flash.events.MouseEvent;

import flash.display.MovieClip;

public class Sound2 extends MovieClip

{

var bark1:Bark1;

var bark2:Bark2;

var bark3:Bark3;

var bark4:Bark4;

var bark5:Bark5;

var bark6:Bark6;

var soundChannel:SoundChannel;

var barkArray:Array = [Bark1, Bark2, Bark3, Bark4, Bark5, Bark6];

public function Sound2()

{

barkButton.addEventListener(MouseEvent.CLICK, onBarkButtonClick);

bark1 = new Bark1();

bark2 = new Bark2();

bark3 = new Bark3();

bark4 = new Bark4();

bark5 = new Bark5();

bark6 = new Bark6();

soundChannel = new SoundChannel();

function onBarkButtonClick(event:MouseEvent):void

{

var barkNo = Math.round(Math.random() * 5);

soundChannel = (barkArray[barkNo]).play();

}

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

When I try to press the button, I get this error message :

TypeError: Error #1006: play is not a function.

at MethodInfo-22()

I used trace and saw the numbers from barkNo were fine, I think it's just something about the array. I've also spent a few hours trying to do it different ways, but still nothing. How can I play a random sound from an array? And am I storing the information correctly? I'm not sure what I'm missing, any help would be great.

Thanks

Report · Apr 06, 2013

as3 is case sensitiv.

change all the upper cases of your array to lower cases:

var barkArray:Array = [bark1... bark6];

also it might be necessary to cast your Sounds

soundChannel = Sound(barkArray[barkNo]).play();

also:

1. In a class its usual a good idea to grant all your functions and variables a scope that are not created on the fly

private var bark1:Bark1 etc.

2.you shouldn`t put another function inside the constructor

put it after the constructors closing bracket and write

public function onBarkButtonClick(event:MouseEvent):void

{

var barkNo = Math.round(Math.random() * 5);

soundChannel = Sound(barkArray[barkNo]).play();

}

Report · Apr 06, 2013

First, never use nested and anonymous functions - you position yourself for a lot of trouble.

Try this (I did not test it though):

package
{
          import flash.media.Sound;
          import flash.media.SoundChannel;
          import flash.events.MouseEvent;
          import flash.display.MovieClip;
  
          public class Sound2 extends MovieClip
          {
                    var sound:Sound;
                    var soundChannel:SoundChannel = new SoundChannel();
                    var barkArray:Array = [Bark1, Bark2, Bark3, Bark4, Bark5, Bark6];
  
                    public function Sound2()
                    {
                              barkButton.addEventListener(MouseEvent.CLICK, onBarkButtonClick);
                    }
  
                    private function onBarkButtonClick(event:MouseEvent):void
                    {
                              soundChannel.stop();
                              sound = new barkArray[int(barkArray.length * Math.random())]();
                              soundChannel = sound.play();
                    }
  
          }
}

Report · Apr 06, 2013

Hey guys,

Thanks for the reply. I didn't mean to have the function nested haha, so I fixed that up. Also, with the sounds in the array, their AS Linkage is Bark1, Bark2 etc. with a capital, so that's what I used when putting them in the array. If I use the lower case, it says I'm accessing an undefined property, EVEN when I define them using variables.

Andrei1, I tried your way and I get the error message :

1067 : Implicit coercion of a value type void to an unrelated type flash.media:SoundChannel

I think I know what that means, I've had it before. It's where the variables type isn't correct. But I can't seem to figure out how it related to the Sound Channel.

Report · Apr 07, 2013

When you only declare an object you do not yet create it, so it will be null.

var bark1:Bark1; // this object does not yet exist

bark1 = new Bark1(); // now it exists

Report · Apr 07, 2013

You are pushing classes of Sounds in an array and try to use play() as if it were a static function.

Looke here for the basics how Sound-objects are used.

declare your array in the beginning like so: var barkArray:Array = new Array();

and after you have called the constructor of each class,

add the instances to the array:

....

bark6 = new Bark6();

barkArray.push(bark1);

...