feat(enemy): 新增 EnemyLocomotion 执行器(Idle/Patrol-Wander/Face/Approach)

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

Assets/_Game/Scripts/Enemies/Navigation/BaseGames.Enemies.Navigation.asmdef

@@ -9,6 +9,7 @@
   "rootNamespace": "BaseGames.Enemies.Navigation",
   "references": [
     "BaseGames.Enemies",
+    "BaseGames.AI",
     "PathBerserker2d"
   ],
   "autoReferenced": true,

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

@@ -0,0 +1,105 @@
+using UnityEngine;
+using BaseGames.AI;
+
+namespace BaseGames.Enemies
+{
+    /// <summary>
+    /// 敌人移动执行器：唯一的移动/朝向入口。AI 状态与能力经 IEnemyLocomotion
+    /// 声明意图，本组件每帧把当前模式翻译为对 EnemyBase/IPathAgent 的调用。
+    /// 取代散落的 MoveTo/StopMovement/FacePlayer/FaceTarget 直调与三个协程能力。
+    /// </summary>
+    [DisallowMultipleComponent]
+    public sealed class EnemyLocomotion : MonoBehaviour, IEnemyLocomotion
+    {
+        [Header("巡逻策略（P6 实现 Pace/Waypoints；当前仅 Wander）")]
+        [SerializeField] private PatrolStrategy _patrolStrategy = PatrolStrategy.Wander;
+
+        private EnemyBase _enemy;
+        private LocomotionMode _mode = LocomotionMode.Idle;
+        private Transform _approachTarget;
+        private Vector2 _facePoint;
+
+        public LocomotionMode CurrentMode => _mode;
+        public bool IsMoving => _enemy != null && _enemy.Nav != null && _enemy.Nav.IsMoving;
+
+        private void Awake()
+        {
+            _enemy = GetComponentInParent<EnemyBase>();
+            if (_enemy == null)
+                Debug.LogError("[EnemyLocomotion] 找不到 EnemyBase。", this);
+        }
+
+        // ── IEnemyLocomotion（声明意图，不立即 actuate 之外的副作用）──
+        public void SetMode(LocomotionMode mode)
+        {
+            if (_mode == mode) return;
+            _mode = mode;
+            if (mode == LocomotionMode.Idle) _enemy?.StopMovement();
+            if (mode == LocomotionMode.Patrol && _enemy?.Stats != null)
+                _enemy.Nav?.SetSpeed(_enemy.Stats.WalkSpeed);
+        }
+
+        public void Approach(Transform target)
+        {
+            _mode = LocomotionMode.Approach;
+            _approachTarget = target;
+            if (_enemy?.Stats != null) _enemy.Nav?.SetSpeed(_enemy.Stats.RunSpeed);
+        }
+
+        public void MoveTo(Vector2 point)
+        {
+            _mode = LocomotionMode.Approach;
+            _approachTarget = null;
+            _enemy?.MoveTo(point);
+        }
+
+        public void Face(Vector2 lookAt)
+        {
+            _mode = LocomotionMode.Face;
+            _facePoint = lookAt;
+        }
+
+        public void Stop()
+        {
+            _mode = LocomotionMode.Idle;
+            _enemy?.StopMovement();
+        }
+
+        // ── 每帧把模式翻译成执行 ──
+        private void Update()
+        {
+            if (_enemy == null) return;
+            switch (_mode)
+            {
+                case LocomotionMode.Idle:
+                    break; // SetMode(Idle) 已停；保持
+                case LocomotionMode.Patrol:
+                    TickPatrol();
+                    break;
+                case LocomotionMode.Face:
+                    _enemy.StopMovement();
+                    _enemy.FaceTarget(_facePoint);
+                    break;
+                case LocomotionMode.Approach:
+                    if (_approachTarget != null) _enemy.MoveTo(_approachTarget.position);
+                    break;
+            }
+        }
+
+        private void TickPatrol()
+        {
+            var nav = _enemy.Nav;
+            if (nav == null) return;
+            switch (_patrolStrategy)
+            {
+                case PatrolStrategy.Wander:
+                    if (!nav.IsMoving) nav.WalkToRandom();
+                    break;
+                // Pace / Waypoints：P6 实现
+                default:
+                    if (!nav.IsMoving) nav.WalkToRandom();
+                    break;
+            }
+        }
+    }
+}

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

@@ -0,0 +1,11 @@
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