66 lines
2.5 KiB
C#
66 lines
2.5 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Reflection;
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using UnityEngine;
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namespace BaseGames.AI
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{
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/// <summary>
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/// 反射收集所有 [AiDefinition] 的 AiScript 子类，按 id 提供共享 AiGraph（flyweight）。
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/// 同一 id 全实例共享同一 AiScript 实例 → 同一张不可变 AiGraph。
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/// </summary>
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public static class AiDefinitionRegistry
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{
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static Dictionary<string, AiScript> _byId;
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// 项目已关闭 Domain Reload：静态缓存需在进入播放时重置，保证按最新类型重建。
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[RuntimeInitializeOnLoadMethod(RuntimeInitializeLoadType.BeforeSceneLoad)]
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static void ResetOnPlay() => _byId = null;
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static void EnsureBuilt()
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{
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if (_byId != null) return;
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_byId = new Dictionary<string, AiScript>();
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foreach (var asm in AppDomain.CurrentDomain.GetAssemblies())
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{
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Type[] types;
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try { types = asm.GetTypes(); }
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catch (ReflectionTypeLoadException e) { types = e.Types; }
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if (types == null) continue;
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for (int i = 0; i < types.Length; i++)
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{
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var t = types[i];
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if (t == null || t.IsAbstract || !typeof(AiScript).IsAssignableFrom(t)) continue;
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var attr = t.GetCustomAttribute<AiDefinitionAttribute>();
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if (attr == null) continue;
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if (_byId.ContainsKey(attr.Id))
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throw new InvalidOperationException(
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$"AiDefinitionRegistry: 重复的 AI 定义 id '{attr.Id}'（{t.FullName}）。");
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_byId[attr.Id] = (AiScript)Activator.CreateInstance(t);
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}
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}
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}
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public static bool Has(string id)
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{
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EnsureBuilt();
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return _byId.ContainsKey(id);
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}
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/// <summary>取 id 对应的共享 AiGraph；不存在则显式抛错（根因暴露，不做兜底）。</summary>
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public static AiGraph GetGraph(string id)
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{
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EnsureBuilt();
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if (!_byId.TryGetValue(id, out var script))
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throw new InvalidOperationException(
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$"AiDefinitionRegistry: 未找到 AI 定义 id '{id}'。请确认存在 [AiDefinition(\"{id}\")] 的 AiScript 子类。");
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return script.GetOrBuildGraph();
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}
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public static IEnumerable<string> Ids
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{
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get { EnsureBuilt(); return _byId.Keys; }
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}
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}
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}
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