FadeManager

//---------------------- Fade_Mgr.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class Fade_Mgr : MonoBehaviour
{
public bool IsFadeOut = false; //나갈때
public bool IsFadeIn = false;

//--- Fade In Out 관련 변수들...
Image m_FadeImg = null;
float AniDuring = 0.8f;     //페이드아웃 연출 시간 설정
bool  m_StartFade = false;
float m_CacTime = 0.0f;
float m_AddTimer = 0.0f;
Color m_Color;

float m_StVal = 1.0f;
float m_EndVal = 0.0f;

string m_SceneName = "";    //이동할 씬 이름 저장용 변수
//--- Fade In Out 관련 변수들...

public static Fade_Mgr Inst = null;

void Awake()
{
    Inst = this;    
}

// Start is called before the first frame update
void Start()
{
    GameObject a_Canvas = GameObject.Find("Canvas");
    if(a_Canvas != null)
    {
        //매개변수 true의 의미는 Active가 껴져 있는 게임오브젝트도 모두 가져오라는 뜻
        Image[] a_ImgList = a_Canvas.transform.GetComponentsInChildren<Image>(true);
        for(int ii = 0; ii < a_ImgList.Length; ii++)
        {
            if(a_ImgList[ii].gameObject.name == "FadePanel")
            {
                m_FadeImg = a_ImgList[ii];
                break;
            }
        }

    } //if (a_Canvas != null)

    //--- Fade In 초기화
    if(m_FadeImg != null && IsFadeIn == true)
    {
        m_StVal = 1.0f;
        m_EndVal = 0.0f;
        m_FadeImg.color = new Color32(0, 0, 0, 255);
        m_FadeImg.gameObject.SetActive(true);
        m_StartFade = true;
    }
    //--- Fade In 초기화

}//void Start()

// Update is called once per frame
void Update()
{
    if (m_FadeImg == null)
        return;

    FadeUpdate();
}

void FadeUpdate()
{
    if (m_StartFade == false)
        return;

    if(m_CacTime < 1.0f)
    {
        m_AddTimer += Time.deltaTime;
        m_CacTime = m_AddTimer / AniDuring;
        m_Color = m_FadeImg.color;
        m_Color.a = Mathf.Lerp(m_StVal, m_EndVal, m_CacTime);
        m_FadeImg.color = m_Color;

        if(1.0f <= m_CacTime)
        {
            if (m_StVal == 1.0f && m_EndVal == 0.0f) //들어올 때 
            {
                m_Color.a = 0.0f;
                m_FadeImg.color = m_Color;
                m_FadeImg.gameObject.SetActive(false);
                m_StartFade = false;
            }
            else if (m_StVal == 0.0f && m_EndVal == 1.0f) //나갈 때
            {
                SceneManager.LoadScene(m_SceneName);
            }
        }//if(1.0f <= m_CacTime)

    }//if(m_CacTime < 1.0f)
}//void FadeUpdate()

public void SceneOut(string a_ScName)
{
    if (m_FadeImg == null)
        return;

    m_SceneName = a_ScName;

    m_CacTime = 0.0f;
    m_AddTimer = 0.0f;
    m_StVal = 0.0f;
    m_EndVal = 1.0f;
    m_FadeImg.color = new Color32(0, 0, 0, 0);
    m_FadeImg.gameObject.SetActive(true);
    m_StartFade = true;
}

}