116 lines
4.3 KiB
C#
116 lines
4.3 KiB
C#
using System.Collections;
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using UnityEngine;
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using BaseGames.Core;
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using BaseGames.Core.Events;
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namespace BaseGames.Audio
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{
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/// <summary>BGM 状态机内部状态。</summary>
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public enum MusicState
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{
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Exploration, // 默认：区域探索 BGM
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Boss, // Boss 战：Boss 主题 BGM
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Victory, // Boss 击败后短暂胜利音乐
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None, // 过场/死亡/主菜单时由 BGMController 直接切换
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}
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/// <summary>
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/// BGM 控制器：订阅世界/Boss/游戏状态事件，指挥 AudioManager 切换 BGM 和快照。
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/// 挂在 Persistent 场景 [AudioManager] 子对象上。
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/// </summary>
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public class BGMController : MonoBehaviour
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{
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[SerializeField] private AudioManager _audioManager;
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[SerializeField] private AudioConfigSO _config;
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[Header("Event Channels - Subscribe")]
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[SerializeField] private GameStateEventChannelSO _onGameStateChanged;
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[SerializeField] private BoolEventChannelSO _onBossFightToggled; // true=开始, false=结束
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[SerializeField] private StringEventChannelSO _onRegionEntered;
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private MusicState _musicState = MusicState.Exploration;
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private string _currentRegion = string.Empty;
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private readonly CompositeDisposable _subscriptions = new();
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private void Awake()
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{
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Debug.Assert(_config != null, "[BGMController] _config 未赋值，请在 Inspector 中指定 AudioConfigSO。", this);
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}
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private void OnEnable()
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{
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_onBossFightToggled?.Subscribe(OnBossFightToggled).AddTo(_subscriptions);
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_onRegionEntered?.Subscribe(OnRegionEntered).AddTo(_subscriptions);
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_onGameStateChanged?.Subscribe(HandleStateChanged).AddTo(_subscriptions);
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}
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private void OnDisable()
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{
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_subscriptions.Clear();
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}
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private void OnBossFightToggled(bool started)
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{
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if (started)
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{
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_musicState = MusicState.Boss;
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var clip = _config.GetBossBGM(_currentRegion);
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if (clip == null)
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{
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Debug.LogWarning($"[BGMController] 区域 '{_currentRegion}' 未配置 Boss BGM，将保持当前音乐。", this);
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}
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else
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{
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_audioManager.PlayBGM(clip, fadeOutDur: 1f, fadeInDur: 0.5f);
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}
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_audioManager.TransitionToSnapshot("BossFight", 0.5f);
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}
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else
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{
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StartCoroutine(PlayVictoryThenRestore());
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}
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}
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private IEnumerator PlayVictoryThenRestore()
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{
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_musicState = MusicState.Victory;
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_audioManager.PlayBGM(_config.VictoryStingBGM,
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fadeOutDur: 0.3f, fadeInDur: 0.1f);
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float dur = _config.VictoryStingDuration;
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yield return new WaitForSecondsRealtime(dur);
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_musicState = MusicState.Exploration;
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OnRegionEntered(_currentRegion);
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_audioManager.TransitionToSnapshot("Default", 1.0f);
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}
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private void OnRegionEntered(string regionId)
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{
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if (regionId == _currentRegion) return;
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_currentRegion = regionId;
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if (_musicState == MusicState.Exploration)
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{
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var clip = _config.GetZoneBGM(regionId);
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if (clip == null)
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{
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Debug.LogWarning($"[BGMController] 区域 '{regionId}' 未配置 BGM，将保持当前音乐。", this);
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return;
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}
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_audioManager.PlayBGM(clip, fadeOutDur: 1f, fadeInDur: 1f);
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}
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}
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private void HandleStateChanged(GameStateId state)
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{
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if (state == GameStates.MainMenu)
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_audioManager.PlayBGM(_config.MainMenuBGM,
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fadeOutDur: 0.5f, fadeInDur: 1.0f);
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else if (state == GameStates.Paused)
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_audioManager.TransitionToSnapshot("Paused", 0.2f);
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else if (state == GameStates.Dead)
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_audioManager.TransitionToSnapshot("Dead", 1.5f);
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else if (state == GameStates.Gameplay)
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_audioManager.TransitionToSnapshot("Default", 0.3f);
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}
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}
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}
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