Refactor code structure for improved readability and maintainability

Assets/_Game/Scripts/Enemies/Abilities/FacePlayerAbility.cs

@@ -0,0 +1,42 @@
+using System.Collections;
+using System.Linq;
+using Animancer;
+using UnityEngine;
+
+namespace BaseGames.Enemies.Abilities
+{
+    /// <summary>
+    /// 面向玩家能力：朝向玩家后播放转身/翻转动画并等待完成。
+    /// CanUse 重写：仅在无其他技能运行且玩家在背后时可用。
+    /// 可复用于任何需要"检测背后玩家并翻转"的敌人。
+    /// </summary>
+    public class FacePlayerAbility : EnemyAbilityBase
+    {
+        [SerializeField] private ClipTransition _faceClip;
+
+        public override bool CanUse =>
+            base.CanUse
+            && !_enemy.Abilities.All.Any(a => a != this && a.IsRunning)
+            && IsPlayerBehind();
+
+        private bool IsPlayerBehind()
+        {
+            if (_enemy.PlayerTransform == null) return false;
+            float dx = _enemy.PlayerTransform.position.x - _enemy.transform.position.x;
+            int facing = _enemy.Movement?.FacingDirection ?? 1;
+            return (facing > 0 && dx < 0) || (facing < 0 && dx > 0);
+        }
+
+        protected override IEnumerator ExecuteCoroutine()
+        {
+            Phase = AbilityRunState.Active;
+
+            _enemy.Movement?.FaceTarget(_enemy.PlayerTransform.position);
+
+            if (_faceClip.Clip == null) yield break;
+
+            _animancer.Play(_faceClip);
+            yield return EnemyAbilityWaits.Get(_faceClip.Clip.length);
+        }
+    }
+}