Cannot play music, SimpleAudioEngine.h not accessible

cocos2d-x C++
#1

I am trying to put some music on my project, but it won’t allow me to access SimpleAudioEngine.h, I keep getting this error:

Error (active) “CocosDenshion::SimpleAudioEngine::SimpleAudioEngine()” (declared at line 256 of “c:\MyGame \cocos2d\cocos\audio\include\SimpleAudioEngine.h”) is inaccessible MyGame c:\MyGame \Classes\MyGame .cpp

I have included the header and namespace properly, I’m using visual studio and it showed me the definition so It knows where the file is, I have no idea what’s the problem.

#2

Permissions on the .h?

#3

Good idea but I just checked it and that’s not the problem,

#4

Ok, VS is not happy about SimpleAudioEngine because it has it’s default constructor set to protected if I change it to public Visual Studio will compile it without error, but it does not work, because no music plays in the background.

#5

What vers. of cocos are you using?

#6

cocos2d-x-3.13

#7

Alright, after I noticed that getInstance is a static function and without modifying the SimpleAudioEngine files, I was able to get the Instance of SimpleAudioEngine, by using CocosDenshion::SimpleAudioEngine::getInstance() instead of the mistake I was doing of CocosDenshion::SimpleAudioEngine(), but I was able to access it by removing the protected keyword, in either case.

The only issue is that it’s not playing the background music. I noticed that some virtual function like preloadBackgroundMusic, setBackgroundMusicVolume and a few other are not implemented.

#8

not implemented? Just on Win32?

#9

So far I’ve compiled it on Win32, Win10 and Win8.1 and all of them don’t have bgm playing.

#10

Could you post a code snippet? Maybe you missed something obvious. I’ve used SimpleAudioEngine in win32 projects and never had problems with background music. Maybe the music format?

#11

I’ve tried both .wav and .ogg, none of them worked.

bool MyGame::init()
{
	if (!Layer::init())
	{
		return false;
	}
	is_dragged = false;

	CCLOG("Starting Music");
	const char* MUSIC_PATH = "Music/MainThemeLoop.ogg";
	CocosDenshion::SimpleAudioEngine::getInstance()->preloadBackgroundMusic(MUSIC_PATH);
	CocosDenshion::SimpleAudioEngine::getInstance()->playBackgroundMusic(MUSIC_PATH, true);

	initTouch();
	initTiled();
	
	this->scheduleUpdate();
	return true;
}
#12

I don’t think it’s mandatory to preload background music, try playing directly, and try with a small mp3 file.

1 Like
#13

Thanks it worked, when I switched to .mp3 file.