CocosDenshion playBackgroundMusic lag

cocos2d-x C++
#1

Hey,

Whenever I try to play background music, the game is stuck for a small amount of time. Is there any way to remedy this, like preloading music, or asynchronously loading music before it starts playing? It’s really annoying.

#2

Hey, why don´t you simply preload it with this code. Put it in the AppDelegate.cpp

SimpleAudioEngine::sharedEngine()->playBackgroundMusic("yourFile.ext", true) SimpleAudioEngine::sharedEngine()->pauseBackgroundMusic()

Whenever you want to play it immediately, simply use

SimpleAudioEngine::sharedEngine()->resumeBackgroundMusic()

#3

That works if you only have one background music file, but not if you have multiple that you switch through like me.

#4

Doesnt

SimpleAudioEngine::sharedEngine()->preloadEffect("yourFile.ext")

work?

#5

It works for effects, but not for background music. For background music, the “preload” function does absolutely nothing:

From SimpleAudioEngine.cpp:

void SimpleAudioEngine::preloadBackgroundMusic(const char* pszFilePath)
{
@ @
}

#6

I would use your background music as effects. Build them into endless audiofiles (there exists several apps) and preload them. Then use
SimpleAudioEngine::sharedEngine()->playEffect("preloadedFile.ext")
for immediate loading

#7

Unfortunately for a lot of systems that won’t work, because I think for example the SoundPool on android only has 1MB of memory allocated for it…the effects are really only supposed to be short sounds.

#8

Then you need to implement your own preloadBackgroundMusic function. Or if you play the new background music, why don´t you simply show a loadingscreen or something? For what reason do you have different background music files?

#9

Each different “area” of the game has different music, and you go between areas often. I think the problem only occurs on Win32 though, and not Android or iOS, so I think I should be good.

#10

Use effects and use a timer, that reload the effect after maybe 30 secs, so you dont need a big buffer. But btw, i think its np to load maybe 50MB into the RAM, because todays devices have >= 512MB!

#11

I know the devices could probably load a lot of stuff into RAM, but the OS won’t let me.