PublicAudioUtil.cs

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using UnityEngine;
using UnityEditor;
using System;
using System.Reflection;

namespace HKI.Core.Audio.Editor
{
    public static class PublicAudioUtil
    {
        // Interface functions
        public static void PlayClip(AudioClip clip)
        {
            if(clip == null)
                return;

            StopClipPlaying();

            Assembly unityEditorAssembly = typeof(AudioImporter).Assembly;

            Type audioUtilClass = unityEditorAssembly.GetType("UnityEditor.AudioUtil");

            MethodInfo method = audioUtilClass.GetMethod("PlayClip", BindingFlags.Static | BindingFlags.Public, null, new System.Type[] { typeof(AudioClip) }, null);

            method.Invoke(null, new object[] { clip });
        }

        public static bool IsClipPlaying(AudioClip clip)
        {
            if (clip == null)
                return false;

            Assembly unityEditorAssembly = typeof(AudioImporter).Assembly;

            Type audioUtilClass = unityEditorAssembly.GetType("UnityEditor.AudioUtil");

            MethodInfo method = audioUtilClass.GetMethod("IsClipPlaying", BindingFlags.Static | BindingFlags.Public, null, new System.Type[] { typeof(AudioClip) }, null);

            return (bool)method.Invoke(null, new object[] { clip });
        }

        public static void StopClipPlaying()
        {
            Assembly unityEditorAssembly = typeof(AudioImporter).Assembly;

            Type audioUtilClass = unityEditorAssembly.GetType("UnityEditor.AudioUtil");

            MethodInfo method = audioUtilClass.GetMethod("StopAllClips", BindingFlags.Static | BindingFlags.Public, null, new Type[] { }, null);
            method.Invoke(null, new object[] { });
        }
    }
}