/// <summary>
/// 音频系统常量定义
/// </summary>
public static class AudioConstant
{
    #region Playback Limits
    
    /// <summary>
    /// 最大音乐播放数
    /// </summary>
    public const int MaxMusicCount = 1;
    
    /// <summary>
    /// 最大音效播放数
    /// </summary>
    public const int MaxSoundCount = 100;
    
    /// <summary>
    /// 最大语音播放数
    /// </summary>
    public const int MaxSpeakCount = 1;
    
    /// <summary>
    /// 音乐播放池上限
    /// </summary>
    public const int MusicPlayingLimit = 1;
    
    /// <summary>
    /// 音效播放池上限
    /// </summary>
    public const int SoundPlayingLimit = 100;
    
    /// <summary>
    /// 语音播放池上限
    /// </summary>
    public const int SpeakPlayingLimit = 1;
    
    #endregion
    
    #region Priority Values
    
    /// <summary>
    /// 最高优先级
    /// </summary>
    public const int MaxPriority = 99;
    
    /// <summary>
    /// 最低优先级
    /// </summary>
    public const int MinPriority = 0;
    
    /// <summary>
    /// 默认优先级
    /// </summary>
    public const int DefaultPriority = 29;
    
    /// <summary>
    /// 低优先级
    /// </summary>
    public const int LowPriority = 30;
    
    #endregion
    
    #region Fade Duration
    
    /// <summary>
    /// 默认淡入时长（秒）
    /// </summary>
    public const float DefaultFadeInDuration = 2f;
    
    /// <summary>
    /// 默认淡出时长（秒）
    /// </summary>
    public const float DefaultFadeOutDuration = 2f;
    
    #endregion
    
    #region Stopped Pool Limits
    
    /// <summary>
    /// 音乐停止池上限
    /// </summary>
    public const int MusicStoppedLimit = 5;
    
    /// <summary>
    /// 音效停止池上限
    /// </summary>
    public const int SoundStoppedLimit = 50;
    
    /// <summary>
    /// 语音停止池上限
    /// </summary>
    public const int SpeakStoppedLimit = 3;
    
    #endregion
}

/// <summary>
/// 音频池容量配置
/// <para>用于配置播放池和停止池的容量上限</para>
/// </summary>
public struct AudioPoolConfig
{
    /// <summary>
    /// 音乐播放池上限
    /// </summary>
    public int MusicPlayingLimit;
    
    /// <summary>
    /// 音效播放池上限
    /// </summary>
    public int SoundPlayingLimit;
    
    /// <summary>
    /// 语音播放池上限
    /// </summary>
    public int SpeakPlayingLimit;
    
    /// <summary>
    /// 音乐停止池上限
    /// </summary>
    public int MusicStoppedLimit;
    
    /// <summary>
    /// 音效停止池上限
    /// </summary>
    public int SoundStoppedLimit;
    
    /// <summary>
    /// 语音停止池上限
    /// </summary>
    public int SpeakStoppedLimit;
    
    /// <summary>
    /// 默认配置
    /// </summary>
    public static AudioPoolConfig Default => new AudioPoolConfig
    {
        MusicPlayingLimit = AudioConstant.MusicPlayingLimit,
        SoundPlayingLimit = AudioConstant.SoundPlayingLimit,
        SpeakPlayingLimit = AudioConstant.SpeakPlayingLimit,
        MusicStoppedLimit = AudioConstant.MusicStoppedLimit,
        SoundStoppedLimit = AudioConstant.SoundStoppedLimit,
        SpeakStoppedLimit = AudioConstant.SpeakStoppedLimit,
    };
}