Insanely huge initial commit

Assets/Extensions/Feel/MMTools/Tools/MMAudio/MMSoundManager/Events/MMSoundManagerTrackFadeEvent.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+namespace MoreMountains.Tools
+{
+	/// <summary>
+	/// This event will let you order the MMSoundManager to fade an entire track's sounds' volume towards the specified FinalVolume
+	///
+	/// Example : MMSoundManagerTrackFadeEvent.Trigger(MMSoundManager.MMSoundManagerTracks.Music, 2f, 0.5f, new MMTweenType(MMTween.MMTweenCurve.EaseInCubic));
+	/// will fade the volume of the music track towards 0.5, over 2 seconds, using an ease in cubic tween 
+	/// </summary>
+	public struct MMSoundManagerTrackFadeEvent
+	{
+		/// the track to fade the volume of
+		public MMSoundManager.MMSoundManagerTracks Track;
+		/// the duration of the fade, in seconds
+		public float FadeDuration;
+		/// the final volume to fade towards
+		public float FinalVolume;
+		/// the tween to use when fading
+		public MMTweenType FadeTween;
+        
+		public MMSoundManagerTrackFadeEvent(MMSoundManager.MMSoundManagerTracks track, float fadeDuration, float finalVolume, MMTweenType fadeTween)
+		{
+			Track = track;
+			FadeDuration = fadeDuration;
+			FinalVolume = finalVolume;
+			FadeTween = fadeTween;
+		}
+
+		static MMSoundManagerTrackFadeEvent e;
+		public static void Trigger(MMSoundManager.MMSoundManagerTracks track, float fadeDuration, float finalVolume, MMTweenType fadeTween)
+		{
+			e.Track = track;
+			e.FadeDuration = fadeDuration;
+			e.FinalVolume = finalVolume;
+			e.FadeTween = fadeTween;
+			MMEventManager.TriggerEvent(e);
+		}
+	}
+}