fix(enemy): 终审修复——删死代码群体警戒、修 Waypoints 到达推进、补 Locomotion 缺失报错

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Assets/_Game/Scripts/Enemies/Navigation/EnemyLocomotion.cs

@@ -17,6 +17,7 @@ namespace BaseGames.Enemies
         [Header("Waypoints 策略参数")]
         [SerializeField] private Transform[] _waypoints;
         [SerializeField] private bool _pingPong;
+        [SerializeField] private float _waypointArriveRadius = 0.4f;
 
         private EnemyBase _enemy;
         private LocomotionMode _mode = LocomotionMode.Idle;
@@ -116,7 +117,7 @@ namespace BaseGames.Enemies
                     _enemy.MoveInDirection(_paceDir);
                     break;
 
-                case PatrolStrategy.Waypoints: // 按序（loop 或 ping-pong）巡逻路点
+                case PatrolStrategy.Waypoints:
                     if (_waypoints == null || _waypoints.Length == 0)
                     {
                         if (!_warnedNoWaypoints)
@@ -126,7 +127,10 @@ namespace BaseGames.Enemies
                         }
                         break;
                     }
-                    if (_enemy.Nav != null && !_enemy.Nav.IsMoving)
+                    // 仅首次或"已到达当前路点"时推进并寻路——不依赖 IsMoving
+                    // （PathBerserker2d 寻路跨帧异步，IsMoving 在寻路计算期间为 false，会误触发每帧推进）。
+                    if (_wpIndex < 0 ||
+                        Vector2.Distance(_enemy.transform.position, _waypoints[_wpIndex].position) <= _waypointArriveRadius)
                     {
                         AdvanceWaypoint();
                         _enemy.MoveTo(_waypoints[_wpIndex].position);