AudioCore0.11

Assets/04.AudioCore/RunTime/MusicPlayer.cs

@@ -4,38 +4,84 @@ using UnityEngine;
 public class MusicPlayer
 {
     private AudioSourcePool audioSourcePool;
+    private AudioSource audioSource1;
+    private AudioSource audioSource2;
+    private AudioSource currentAudioSource;
 
     public MusicPlayer(AudioSourcePool audioSourcePool)
     {
         this.audioSourcePool = audioSourcePool;
     }
 
-    public void Play(AudioClip clip, float fadeDuration)
+    /// <summary>
+    /// 播放背景音乐
+    /// </summary>
+    /// <param name="clip">音频</param>
+    /// <param name="volume">音量</param>
+    /// <param name="fadeDuration">自然过渡时间</param>
+    public void Play(AudioClip clip, float volume, float fadeDuration)
     {
-        AudioSource source = audioSourcePool.GetAudioSource("Music");
-        if (source == null) return;
-
-        CoroutineHelper.StartCoroutine(FadeMusic(source, clip, fadeDuration));
+        if(audioSource1 == null)
+        {
+            audioSource1 = audioSourcePool.GetAudioSource("Music");
+            audioSource1.clip = clip;
+            audioSource1.volume = volume;
+            currentAudioSource = audioSource1;
+            currentAudioSource.Play();
+            CoroutineHelper.StartCoroutine(FadeMusic(audioSource1, fadeDuration, audioSource2));
+        }
+        else
+        {
+            if (audioSource2  == null)
+            {
+                audioSource2 = audioSourcePool.GetAudioSource("Music");
+                audioSource2.clip = clip;
+                audioSource2.volume = volume;
+                currentAudioSource = audioSource2;
+                currentAudioSource.Play();
+                CoroutineHelper.StartCoroutine(FadeMusic(audioSource2, fadeDuration, audioSource1));
+            }
+            else
+            {
+                Debug.LogWarning("已同时存在两个背景乐在切换");
+            }
+        }
+        
     }
 
+    /// <summary>
+    /// 关闭背景音乐
+    /// </summary>
+    /// <param name="fadeDuration">关闭时的自然过渡时间</param>
     public void Stop(float fadeDuration)
     {
-        AudioSource source = audioSourcePool.GetAudioSource("Music");
-        if (source == null) return;
-
-        CoroutineHelper.StartCoroutine(FadeOutMusic(source, fadeDuration));
+        CoroutineHelper.StartCoroutine(FadeOutMusic(currentAudioSource, fadeDuration));
     }
 
-    private IEnumerator FadeMusic(AudioSource source, AudioClip clip, float fadeDuration)
+    /// <summary>
+    /// 切换音频
+    /// </summary>
+    /// <param name="source1">播放的音频</param>
+    /// <param name="fadeDuration">变化时间</param>
+    /// <param name="source2">停止的音频</param>
+    /// <returns></returns>
+    private IEnumerator FadeMusic(AudioSource source1, float fadeDuration, AudioSource source2 = null)
     {
-        yield return FadeOutMusic(source, fadeDuration);
+        yield return FadeInMusic(source1, fadeDuration);
 
-        source.clip = clip;
-        source.Play();
-
-        yield return FadeInMusic(source, fadeDuration);
+        if(source2 != null)
+        {
+            yield return FadeOutMusic(source2, fadeDuration);
+        }
+        
     }
 
+    /// <summary>
+    /// 关闭音频的协程
+    /// </summary>
+    /// <param name="source"></param>
+    /// <param name="fadeDuration"></param>
+    /// <returns></returns>
     private IEnumerator FadeOutMusic(AudioSource source, float fadeDuration)
     {
         float startVolume = source.volume;
@@ -47,9 +93,24 @@ public class MusicPlayer
         }
 
         source.Stop();
-        source.volume = startVolume;
+        audioSourcePool.ReturnAudioSource("Music", source.gameObject);
+
+        if(currentAudioSource == audioSource1)
+        {
+            audioSource2 = null;
+        }
+        else if(currentAudioSource == audioSource2)
+        {
+            audioSource1 = null;
+        }
     }
 
+    /// <summary>
+    /// 开启音频的协程
+    /// </summary>
+    /// <param name="source"></param>
+    /// <param name="fadeDuration"></param>
+    /// <returns></returns>
     private IEnumerator FadeInMusic(AudioSource source, float fadeDuration)
     {
         float targetVolume = source.volume;