146 lines
5.7 KiB
C#
146 lines
5.7 KiB
C#
using System;
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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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/// 维护当前激活的游戏状态，在状态变化时全量匹配 Path 表，返回应当播放的 ContainerId。
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/// </summary>
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public class MusicStateRouter
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{
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// key: StateGroup enum Type，value: 当前激活的 enum 值
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readonly Dictionary<Type, Enum> m_activeStates = new();
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readonly MusicPathConfig m_musicPaths;
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readonly AmbiencePathConfig m_ambiencePaths;
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// 上一次匹配到的 PathId，用于 Transition 表的 FromPathId 查询
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public uint LastMusicPathId { get; private set; }
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public uint LastAmbiencePathId { get; private set; }
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internal IReadOnlyDictionary<Type, Enum> ActiveStates { get { return this.m_activeStates; }}
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public MusicStateRouter(MusicPathConfig musicPaths, AmbiencePathConfig ambiencePaths)
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{
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this.m_musicPaths = musicPaths;
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this.m_ambiencePaths = ambiencePaths;
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}
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/// <summary>
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/// 更新某个 StateGroup 的当前值，并重新全量匹配两张 Path 表。
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/// </summary>
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public void SetState<TEnum>(TEnum state, out uint musicContainerId, out uint ambienceContainerId)
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where TEnum : Enum
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{
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// Dictionary<Type, Enum> 天然保证同一 StateGroup 只保留最新值，直接覆盖即可
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this.m_activeStates[typeof(TEnum)] = state;
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musicContainerId = MatchBestPath(this.m_musicPaths.MusicPathList(), out uint musicPathId);
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ambienceContainerId = MatchBestPath(this.m_ambiencePaths.AmbiencePathList(), out uint ambiencePathId);
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LastMusicPathId = musicPathId;
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LastAmbiencePathId = ambiencePathId;
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#if UNITY_EDITOR
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Editor.DebugInfoCollector.Instance.ActiveStates = this.m_activeStates;
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#endif
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}
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// ─────────────────────────────────────────────
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// 内部匹配逻辑
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// ─────────────────────────────────────────────
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/// <summary>
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/// 遍历路径列表，找到所有满足当前状态的规则，返回 priority 最小（最高优先级）的那条的 ContainerId。
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/// </summary>
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uint MatchBestPath<T>(List<T> paths, out uint matchedPathId) where T : IPathEntry
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{
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IPathEntry best = null;
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foreach (T path in paths)
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{
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if (PathMatches(path.Path) && (best == null || path.Priority < best.Priority))
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best = path;
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}
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if (best != null)
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{
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matchedPathId = best.Id;
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return best.ContainerId;
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}
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matchedPathId = 0;
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return 0;
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}
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/// <summary>
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/// 解析 path 字符串，判断当前激活状态是否满足该条规则。
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/// 格式：TypeID1,子状态|TypeID2,子状态……
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/// 规则中的每一个条件都必须满足（AND 关系）。
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/// </summary>
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bool PathMatches(string pathStr)
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{
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if (string.IsNullOrEmpty(pathStr))
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return true; // 空 path 视为无条件匹配（默认兜底规则）
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string[] conditions = pathStr.Split('|');
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foreach (string condition in conditions)
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{
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string[] parts = condition.Split(',');
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if (parts.Length != 2)
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{
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Debug.LogWarning($"[MusicStateRouter] Path格式错误: '{condition}'");
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return false;
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}
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if (!int.TryParse(parts[0].Trim(), out int typeId) ||
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!int.TryParse(parts[1].Trim(), out int stateValue))
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{
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Debug.LogWarning($"[MusicStateRouter] Path解析失败: '{condition}'");
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return false;
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}
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bool conditionMet = false;
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foreach (KeyValuePair<Type, Enum> kv in this.m_activeStates)
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{
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if (StateGroupRegistry.GetTypeId(kv.Key) != typeId || Convert.ToInt32(kv.Value) != stateValue)
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continue;
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conditionMet = true;
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break;
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}
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if (!conditionMet)
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return false;
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}
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return true;
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}
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}
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// ─────────────────────────────────────────────
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// StateGroup 注册表：将 enum Type 映射为策划表中填写的 TypeId 整数
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// ─────────────────────────────────────────────
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/// <summary>
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/// 程序员在此注册所有 StateGroup enum 与其对应 TypeId 的映射关系。
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/// 策划在 MusicPath.path 字段中填写的 TypeId 数字必须与此处一致。
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/// </summary>
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public static class StateGroupRegistry
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{
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static readonly Dictionary<Type, int> s_typeIdMap = new();
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public static void Register<TEnum>(int typeId) where TEnum : Enum
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{
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s_typeIdMap[typeof(TEnum)] = typeId;
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}
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public static int GetTypeId(Type enumType)
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{
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if (s_typeIdMap.TryGetValue(enumType, out int id))
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return id;
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Debug.LogWarning($"[StateGroupRegistry] 未注册的StateGroup类型: {enumType.Name}，请调用StateGroupRegistry.Register<T>()");
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return -1;
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}
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}
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} |