After a few false starts, I’ve got FMOD Studio working with my current project, and I must say the DAW interface is fun to work with; plus, being able to tinker while the game is running is pretty great. Unfortunately, though, I seem to be doing something wrong in my implementation – every sound takes around a quarter second to actually play. For example, when the player collects a key, the "Get Key" sound effect starts playing noticeably late.

The following is my simple "Play Sound" function, which allows the programmer to pass in a string such as "event:/key" to choose what event to trigger.

[code:1p9ghgru]void AudioSys::PlaySound(std::string soundToPlay, float volume)
if (IsAudioOn)
const char * sound = soundToPlay.c_str();

  FMOD::Studio::ID eventID = {0};
  ERRCHECK( fmodSystem->lookupID(sound, &eventID) );

  if (LastSoundPlayed == &eventID)
    if (soundRepeatDelay != 0.0f)

  // One-shot event
  LastSoundPlayed = &eventID;

  FMOD::Studio::EventDescription* eventDescription = NULL;
  ERRCHECK( fmodSystem->getEvent(&eventID, FMOD_STUDIO_LOAD_BEGIN_NOW, &eventDescription) );

  FMOD::Studio::EventInstance* eventInstance = NULL;
  ERRCHECK( eventDescription->createInstance(&eventInstance) );
  ERRCHECK( eventInstance->start() );

  soundRepeatDelay = SOUND_REPEAT_DELAY;

  // Release will clean up the instance when it completes
  ERRCHECK( eventInstance->release() ); 


I’m not sure what I could be doing wrong, as I don’t know Studio well enough to spot the problem, but I greatly appreciate any help you guys can offer!

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It sounds like your sample data may be taking a while to load. The sample data for an event starts loading asynchronously when you call EventDescription::createInstance(), so if you call EventInstance::start() immediately, playback may be delayed until the sample data is loaded.

To play audio without a delay, you need to wait until the sample data is loaded before calling EventInstance::start(). You can do this in one of two ways:
[:ptx21uox]Wait until the sample data is loaded for that specific event by polling EventInstance::getLoadingState() until it returns FMOD_STUDIO_LOADING_STATE_LOADED[/:m:ptx21uox]
[:ptx21uox]Load sample data for all events in the bank by calling Bank::loadSampleData() and poll Bank::getSampleLoadingState() until it returns FMOD_STUDIO_LOADING_STATE_LOADED[/:m:ptx21uox][/list:u:ptx21uox]

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Thank you so much for the tip!

I tried implementing it as:

[code:1nnxkxwm]// Load sounds?
ERRCHECK( fmodSystem->loadBankFile(Common_MediaPath("Master Bank.bank"), FMOD_STUDIO_LOAD_BANK_NORMAL, &masterBank) );

ERRCHECK( fmodSystem->loadBankFile(Common_MediaPath("Master Bank.bank.strings"), FMOD_STUDIO_LOAD_BANK_NORMAL, &stringsBank) );

ERRCHECK( fmodSystem->lookupID("event:/titleMusic", &bgm_title_ID) ); 

ERRCHECK( fmodSystem->getEvent(&bgm_title_ID, FMOD_STUDIO_LOAD_BEGIN_NOW, &bgm_title_Desc) );

ERRCHECK( bgm_title_Desc->createInstance(&bgm_title_Inst) );

ERRCHECK( masterBank->loadSampleData() );


while(checkState != FMOD_STUDIO_LOADING_STATE_LOADED);[/code:1nnxkxwm]

However, it seems to hang the program – indefinitely. Even with a small set of sounds that shouldn’t take long to load, the while loop doesn’t seem to end. Am I missing something crucial again? Thanks for your help in advance!

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That looks almost right, but you need to call System::update() inside your do-while loop. I didn’t think to specify this before – sorry about that!

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Worked beautifully – thank you!

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