// Play method for per particle events
void GetAudioSourceAndPlay(AudioClip clip, ParticleSoundVolume volume)
{
if (volume.volume.mode == ParticleSystemCurveMode.Constant || volume.volume.mode == ParticleSystemCurveMode.TwoConstants)
{
audioSources.Keys.First().PlayOneShot(clip, volume.volume.Evaluate(0));
}
else
{
AudioSource chosenSource = null;
foreach (AudioSource audioSource in audioSources.Keys)
{
if (!audioSource.isPlaying)
{
chosenSource = audioSource;
audioSources[audioSource] = false;
break;
}
}
if (chosenSource == null)
{
chosenSource = AddAudioSource(false);
}
// If adding the audio source failed, cancel the play
if (chosenSource == null)
{
return;
}
chosenSource.clip = clip;
chosenSource.Play();
StartCoroutine(ApplyVolumeCurve(chosenSource, volume));
}
}
IEnumerator ApplyVolumeCurve(AudioSource audioSource, ParticleSoundVolume volume)
{
AudioClip originalClip = audioSource.clip;
while (audioSource != null && audioSource.isPlaying && audioSource.clip == originalClip)
{
if (volume.durationMode == ParticleSoundVolume.SoundDurationMode.AUDIO_CLIP_DURATION)
{
audioSource.volume = volume.volume.Evaluate(Mathf.Clamp(audioSource.time / audioSource.clip.length, 0, 1));
}
else if (volume.durationMode == ParticleSoundVolume.SoundDurationMode.PARTICLE_LIFETIME)
{
float particleLifetime = particles.main.startLifetime.Evaluate(particles.time);
audioSource.volume = volume.volume.Evaluate(Mathf.Clamp(audioSource.time / particleLifetime, 0, 1));
}
yield return(null);
}
}
