ObscuringItemFader.cs

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using System.Collections;
using UnityEngine;
 
[RequireComponent(typeof(SpriteRenderer))]
public class ObscuringItemFader : MonoBehaviour
{
    private SpriteRenderer m_SpriteRenderer;
 
    private void Awake()
    {
        m_SpriteRenderer = gameObject.GetComponent<SpriteRenderer>();
    }
 
    public void FadeOut()
    {
        StartCoroutine( FadeOutRoutine() );
    }
 
    public void FadeIn()
    {
        StartCoroutine( FadeInRoutine() );
    }
 
    private IEnumerator FadeInRoutine()
    {
        float currentAlpha = m_SpriteRenderer.color.a;
 
        float distance = 1f - currentAlpha;
 
        while( 1f - currentAlpha > 0.01f )
        {
            currentAlpha = currentAlpha + distance / Settings.m_FadeInSeconds * Time.deltaTime;
            m_SpriteRenderer.color = new Color(1f, 1f, 1f, currentAlpha);
            yield return null;
        }
 
        m_SpriteRenderer.color = new Color(1f, 1f, 1f, 1f );
 
    }
 
    private IEnumerator FadeOutRoutine()
    {
        float currentAlpha = m_SpriteRenderer.color.a;
 
        float distance = currentAlpha - Settings.m_TargetAlpha;
 
        while( currentAlpha - Settings.m_TargetAlpha > 0.01f )
        {
            currentAlpha = currentAlpha - distance / Settings.m_FadeOutSeconds * Time.deltaTime;
            m_SpriteRenderer.color = new Color( 1f, 1f, 1f, currentAlpha );
            yield return null;
        }
 
        m_SpriteRenderer.color = new Color( 1f, 1f, 1f, Settings.m_TargetAlpha );
    }
 
 
}