perf(ai): AiRuntime 热路径去装箱/弱表一次注册 + 补 OnExit/Entry OnEnter 测试

Assets/Tests/EditMode/AI/AiRuntimeTests.cs

@@ -15,6 +15,7 @@ namespace BaseGames.Tests.EditMode.AI
                 .To("Chase").When(c => c.Sensor.SeesPlayer(), "SeesPlayer");
             b.State("Chase")
                 .OnEnter(c => c.Mover.FacePlayer())
+                .OnExit(c => c.Mover.Stop())
                 .Tick(c => c.Mover.MoveTo(c.Sensor.LastKnown))
                 .To("Search").When(c => c.Sensor.LostFor(2f), "LostFor(2s)");
             b.State("Search")
@@ -89,5 +90,26 @@ namespace BaseGames.Tests.EditMode.AI
             rt.Tick(1.5f);
             Assert.AreEqual("Patrol", rt.CurrentStateName);   // 累计 >3s
         }
+
+        [Test]
+        public void Switch_RunsPreviousStateOnExit()
+        {
+            var ctx = new FakeAiContext();
+            var rt = new AiRuntime(Graph(), ctx);
+            ctx.S.Sees = true; rt.Tick(0.1f);                          // Patrol -> Chase
+            ctx.S.Sees = false; ctx.S.LostForValue = 5f; rt.Tick(0.1f);// Chase -> Search (触发 Chase.OnExit)
+            CollectionAssert.Contains(ctx.M.Calls, "Stop");
+        }
+
+        [Test]
+        public void Construct_InvokesEntryOnEnter()
+        {
+            var b = new BrainBuilder();
+            b.Entry("Start");
+            b.State("Start").OnEnter(c => c.Mover.LookAround());
+            var ctx = new FakeAiContext();
+            var rt = new AiRuntime(b.Build(), ctx);
+            CollectionAssert.Contains(ctx.M.Calls, "LookAround");
+        }
     }
 }

Assets/_Game/Scripts/AI/AiRuntime.cs

@@ -31,6 +31,8 @@ namespace BaseGames.AI
 
         void EnterInitial()
         {
+            _byContext.Remove(_ctx);   // 幂等：避免同一 ctx 重复键异常
+            _byContext.Add(_ctx, this);
             _current = _graph.GetState(_graph.EntryState);
             _timeInState = 0f;
             _current.OnEnter?.Invoke(_ctx);
@@ -44,9 +46,6 @@ namespace BaseGames.AI
 
         public void Tick(float dt)
         {
-            _byContext.Remove(_ctx);
-            _byContext.Add(_ctx, this);
-
             // IsControllable 让位门：受击/硬直/击飞时挂起，不推进决策也不跑 Tick。
             if (!_ctx.Vitals.IsControllable)
             {
@@ -66,13 +65,21 @@ namespace BaseGames.AI
         bool TryTransition()
         {
             // 全局/父层转换优先（本任务只评估条件型；事件型在 Task 6 处理）
-            foreach (var t in _graph.GlobalTransitions)
+            var globals = _graph.GlobalTransitions;
+            for (int i = 0; i < globals.Count; i++)
+            {
+                var t = globals[i];
                 if (!t.IsEvent && t.Condition(_ctx))
                     return Switch(t);
+            }
 
-            foreach (var t in _current.Transitions)
+            var locals = _current.Transitions;
+            for (int i = 0; i < locals.Count; i++)
+            {
+                var t = locals[i];
                 if (!t.IsEvent && t.Condition(_ctx))
                     return Switch(t);
+            }
 
             return false;
         }