GGJ2017で使ったシーン管理システム

SceneController.cs

using UnityEngine;
using UnityEngine.SceneManagement;
using System.Collections;

public class SceneController : MonoBehaviour
{
    private AudioSource     m_bgmAudio              = null;
    private FadeController  m_fadeController        = null;
    private string          m_beingChangedSceneName = null;

    public static SceneController   Instance
    {
        get;
        private set;
    }

    private void Awake()
    {
        if( Instance != null )
        {
            Destroy( this );
            return;
        }
        Instance    = this;

        m_fadeController    = gameObject.AddComponent<FadeController>();
        m_fadeController.transform.SetParent( transform, false );

        m_bgmAudio      = gameObject.AddComponent<AudioSource>();
        m_bgmAudio.loop = true;

        gameObject.AddComponent<AudioListener>();
    }


    public void ChangeScene( EScene i_scene )
    {
        var sceneData   = SceneTable.Instance.GetSceneData( i_scene );
        ChangeScene( sceneData.m_name );
    }
    public void ChangeScene( string i_sceneName )
    {
        Debug.AssertFormat( !string.IsNullOrEmpty( i_sceneName ), "Invalid i_sceneName!" );

        if( !string.IsNullOrEmpty( m_beingChangedSceneName ) )
        {
            Debug.LogWarningFormat( "It is currently being changed scene to {0}. failed scene = {1}", m_beingChangedSceneName, i_sceneName );
            return;
        }

        StartCoroutine( ChangeSceneProcess( i_sceneName ) );
    }

    private IEnumerator ChangeSceneProcess( string i_sceneName )
    {
        m_beingChangedSceneName = i_sceneName;

        {
            m_fadeController.FadeOut();
            yield return new WaitWhile( () => m_fadeController.State == FadeController.EFadeState.Process );
        }

        StopBGM();

        SceneManager.LoadScene( i_sceneName );

        PlayBGM( i_sceneName );

        {
            m_fadeController.FadeOut();
            yield return new WaitWhile( () => m_fadeController.State == FadeController.EFadeState.Process );
        }

        m_beingChangedSceneName = null;
    }


    private void PlayBGM( string i_scene )
    {
        var audio   = SceneTable.Instance.GetSceneData( i_scene ).m_bgm;
        if( audio != null )
        {
            m_bgmAudio.clip = audio;
            m_bgmAudio.Play();
        }
        else
        {
            StopBGM();
        }
    }

    private void StopBGM()
    {
        m_bgmAudio.Stop();
        m_bgmAudio.clip = null;
    }

} // class SceneController