/// <summary>
/// This method checks if a beat has occurred in the audio by comparing the current sample position of the audio system's dsp time
/// to the next expected sample value of the beat. The frequency of the checks is controlled by the loopTime field.
/// </summary>
/// <remarks>
/// The WaitForSeconds() yield statement places the execution of the coroutine right after the Update() call, so by
/// setting the loopTime to 0, this method will update as frequently as Update(). If even greater accuracy is
/// required, WaitForSeconds() can be replaced by WaitForFixedUpdate(), which will place this coroutine's execution
/// right after FixedUpdate().
/// </remarks>
IEnumerator BeatCheck()
{
while (audioSource.isPlaying)
{
currentSample = (float)AudioSettings.dspTime * audioSource.clip.frequency;
if (currentSample >= (nextBeatSample + sampleOffset))
{
beatInSequence = currentBeat % beatsCountInSequence;
// FIRE BEAT TICK EVENT
GameEvents.BeatTickEvent(currentBeat, beatInSequence);
currentBeat++;
nextBeatSample += samplePeriod;
}
yield return(new WaitForSeconds(loopTime / 1000f));
}
}