Unity类银河恶魔城学习记录15-5,6 p157 Audio time limiter p158 Area sound

   Alex教程每一P的教程原代码加上我自己的理解初步理解写的注释，可供学习Alex教程的人参考
此代码仅为较上一P有所改变的代码

【Unity教程】从0编程制作类银河恶魔城游戏_哔哩哔哩_bilibili​​

AreaSound.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AreaSound : MonoBehaviour
{
    [SerializeField] private int areaSoundIndex;

    private void OnTriggerEnter2D(Collider2D collision)
    {
        if(collision.GetComponent<Player>() != null)
        {
            AudioManager.instance.PlaySFX(areaSoundIndex, null);
        }
    }

    private void OnTriggerExit2D(Collider2D collision)
    {
        if(collision.GetComponent<Player>()!=null)
        {
            AudioManager.instance.StopSFXWithTime(areaSoundIndex);//退出区域后，声音缓慢减少
        }
    }
}

AudioManager.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AudioManager : MonoBehaviour
{
    public static AudioManager instance;

    [SerializeField] private float sfxMinimumDistance;
    [SerializeField] private AudioSource[] sfx