fungus/Assets/Fungus/Audio/Scripts/Commands/SetAudioPitch.cs

using UnityEngine;
using System.Collections;

namespace Fungus
{
	[CommandInfo("Audio",
	             "Set Audio Pitch",
	             "Sets the global pitch level for audio played with Play Music and Play Sound commands.")]
	[AddComponentMenu("")]
	public class SetAudioPitch : Command
	{
		[Range(0,1)]
		[Tooltip("Global pitch level for audio played using the Play Music and Play Sound commands")]
		public float pitch = 1;

		[Range(0,30)]
		[Tooltip("Time to fade between current pitch level and target pitch level.")]
		public float fadeDuration; 

		[Tooltip("Wait until the pitch change has finished before executing next command")]
		public bool waitUntilFinished = true;

		public override void OnEnter()
		{
			System.Action onComplete = () => {
				if (waitUntilFinished)
				{
					Continue();
				}
			};

			MusicController musicController = MusicController.GetInstance();
			if (musicController != null)
			{
				musicController.SetAudioPitch(pitch, fadeDuration, onComplete);
			}

			if (!waitUntilFinished)
			{
				Continue();
			}
		}

		public override string GetSummary()
		{
			return "Set to " + pitch + " over " + fadeDuration + " seconds.";
		}

		public override Color GetButtonColor()
		{
			return new Color32(242, 209, 176, 255);
		}
	}

}