124 lines
5.3 KiB
C#
124 lines
5.3 KiB
C#
using System.Collections;
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using System.Collections.Generic;
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using UnityEngine;
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namespace OCES.Audio
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{
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/// <summary>
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/// 环境音通道播放器。
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/// 与 MusicChannelPlayer 逻辑相同，但使用 AmbienceTransition 表，不涉及节拍对齐。
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/// </summary>
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class AmbienceChannelPlayer
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{
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readonly AmbienceTransitionConfig m_transitionConfig;
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readonly MonoBehaviour m_coroutineHost;
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readonly ChannelFader m_fader;
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readonly List<AmbienceTransition> m_transitionCandidates = new();
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ContainerPlayHandle m_currentHandle;
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Coroutine m_transitionCoroutine;
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Coroutine m_currentFadeOutCoroutine;
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Coroutine m_currentFadeInCoroutine;
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uint m_currentContainerId;
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internal AmbienceChannelPlayer(
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AmbienceTransitionConfig transitionConfig,
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LongAudioContainerPlayer player,
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MonoBehaviour coroutineHost)
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{
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this.m_transitionConfig = transitionConfig;
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this.m_coroutineHost = coroutineHost;
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this.m_fader = new ChannelFader(player, coroutineHost);
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}
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// ─────────────────────────────────────────────
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// 公开接口
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// ─────────────────────────────────────────────
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internal void SwitchTo(uint newContainerId)
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{
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if (newContainerId == this.m_currentContainerId && this.m_currentHandle != null)
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return;
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AmbienceTransition transition = ResolveTransition((int)this.m_currentContainerId, (int)newContainerId);
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if (this.m_transitionCoroutine != null)
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this.m_coroutineHost.StopCoroutine(this.m_transitionCoroutine);
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this.m_transitionCoroutine = this.m_coroutineHost.StartCoroutine(
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DoTransition(newContainerId, transition));
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}
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public void Stop()
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{
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if (this.m_transitionCoroutine != null)
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this.m_coroutineHost.StopCoroutine(this.m_transitionCoroutine);
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this.m_fader.StopCurrent();
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}
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// ─────────────────────────────────────────────
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// Transition 流程（无节拍对齐）
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// ─────────────────────────────────────────────
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IEnumerator DoTransition(uint newContainerId, AmbienceTransition transition)
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{
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if (newContainerId == this.m_fader.CurrentContainerId && this.m_fader.CurrentHandle != null) yield break;
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// 如果等待期间被切回来了，就不淡变了
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if (this.m_currentFadeInCoroutine != null)
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{
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this.m_coroutineHost.StopCoroutine(this.m_currentFadeInCoroutine);
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this.m_currentFadeInCoroutine = null;
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}
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if (this.m_currentFadeOutCoroutine != null)
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{
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this.m_coroutineHost.StopCoroutine(this.m_currentFadeOutCoroutine);
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this.m_currentFadeOutCoroutine = null;
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}
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ContainerPlayHandle outgoing = this.m_fader.CurrentHandle;
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float outgoingVolume = this.m_fader.CurrentVolume;
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this.m_currentFadeOutCoroutine = this.m_coroutineHost.StartCoroutine(
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this.m_fader.FadeOutBranch(outgoing, outgoingVolume, transition));
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this.m_currentFadeInCoroutine = this.m_coroutineHost.StartCoroutine(
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this.m_fader.FadeInBranch(newContainerId, transition));
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yield return this.m_currentFadeInCoroutine;
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this.m_currentFadeInCoroutine = null;
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}
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// ─────────────────────────────────────────────
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// 工具
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// ─────────────────────────────────────────────
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AmbienceTransition ResolveTransition(int sourceContainerId, int destinationContainerId)
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{
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this.m_transitionCandidates.Clear();
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foreach (AmbienceTransition transition in this.m_transitionConfig.AmbienceTransitionList())
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{
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bool sourceMatch = transition.SourceContainerID == sourceContainerId || transition.SourceContainerID < 0;
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bool destMatch = transition.DestinationContainerID == destinationContainerId || transition.DestinationContainerID < 0;
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if (sourceMatch && destMatch)
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{
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this.m_transitionCandidates.Add(transition);
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}
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}
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if (this.m_transitionCandidates.Count == 0)
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return this.m_transitionConfig.QueryById(1);
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AmbienceTransition best = this.m_transitionCandidates[0];
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for (int i = 1; i < this.m_transitionCandidates.Count; i++)
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{
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if (this.m_transitionCandidates[i].Id > best.Id)
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best = this.m_transitionCandidates[i];
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}
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return best;
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}
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}
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}
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