Preloading sound when using "SimpleAudioEngine.h"

cocos2d for iPhone » Programming » CocosDenshion (sound engine)

Preloading sound when using "SimpleAudioEngine.h"

(16 posts) (3 voices)

Started 2 years ago by artem
Latest reply from artem

Tags:

artem
Member

Hi guys,

my question is if I can preload sound file when using "SimpleAudioEngine.h". The problem now is when I click a button and use this code [[SimpleAudioEngine sharedEngine]playEffect:@"click.aif"]; Both buttons freeze for a few seconds, but when I run the scene second time it seems to be ok. I think this has something to do with loading sound file on the firs run?

Any ideas?

Thanks!

Posted 2 years ago #
Steve Oldmeadow
Administrator

Did you try looking at the header? There is a method called preloadEffect.

Posted 2 years ago #
artem
Member

I'm a beginner, and not sure how to use it.

Would you be kind showing me?

Thanks a lot for your help!

Posted 2 years ago #
artem
Member

I got it.

Thanks so much!

Posted 2 years ago #
artem
Member

After I preload a sound effect, I noticed that the first button click is not
producing a sound effect,only when you click on it twice, but when I comment out preload sound effect method it works ok.

any ideas?

Thanks!

Posted 2 years ago #
Steve Oldmeadow
Administrator

What version of the code are you using? I fixed a bug related to what you are describing last week. Make sure you have the latest code.

Posted 2 years ago #
artem
Member

I'm using cocos2d from download page, which says stable. I'm not sure how to get
the latest code, do you mean cocos its self or denshion?

I just tried the latest cocos 8.0 from this web site, and the same thing have happened.

Thanks a lot!

Posted 2 years ago #
Steve Oldmeadow
Administrator

I mean the latest version of SimpleAudioEngine from the svn repository. It is worth learning how to get code from the svn repository.

http://code.google.com/p/cocos2d-iphone/source/detail?r=1303

Posted 2 years ago #
dnsolo
Member

Hello Steve,

I'm interesting in extracting your latest SimpleAudioEngine code from the svn repository, can I do this using the Terminal program on my Mac?

Thanks,

Dan

Posted 2 years ago #
Steve Oldmeadow
Administrator

@dnsolo - you can do it using the command line version of svn but I find it easier using a gui svn client. I use svnX, it is also possible to use XCode and I'm sure there are other tools.

Alternatively you could just save the two files at the URL I gave above as that is all that has changed.

This url gives the command line code to check out the repository:

http://code.google.com/p/cocos2d-iphone/source/checkout

Posted 2 years ago #
dnsolo
Member

Hi Steve,

Also, whenever I stop the background music and then play another sound (preloaded or not) the sound takes about 4 seconds
to start playing. Possibly a bug or am I doing something wrong here?

[[SimpleAudioEngine sharedEngine] stopBackgroundMusic];
[[SimpleAudioEngine sharedEngine] playEffect:@"mySound.caf"];

Thanks,

Dan

Posted 2 years ago #
Steve Oldmeadow
Administrator

@dnsolo - device or simulator? If device which one and what OS version? What is the format of mySound.caf?

Posted 2 years ago #
dnsolo
Member

This problem occurs whilst using the Simulator (OS 3.0), I haven't tested it on the device yet.

The sound file is fine, it was converted using 'afconvert' in the usual way.

This problem only occurs if I attempt to stop any background music beforehand.

Posted 2 years ago #
Steve Oldmeadow
Administrator

The simulator is broken with regard to playing background music. Normally OpenAL playback will stop altogether if you stop the background music so think yourself lucky you are getting it back after 4 seconds ;) If you pause the background music instead of stopping it you should get better results.

Posted 2 years ago #
dnsolo
Member

That's certainly worth knowing about!

As you suggested, I've included the following line of code to 'stop' the music:

[[SimpleAudioEngine sharedEngine] pauseBackgroundMusic];

Works perfectly now Steve, many thanks!

Posted 2 years ago #
artem
Member

I got it working finally.

Thanks Steve!

Posted 2 years ago #

RSS feed for this topic

Reply

You must log in to post.