完整启动流程

Assets/_Game/Scripts/Combat/DamageInfo.cs

@@ -27,6 +27,12 @@ namespace BaseGames.Combat
         public BreakLevel    Break;
         public string        SourceId;
         public string        SkillId;
+        /// <summary>
+        /// 攻击来源投射物（仅当攻击方是 Projectile 时非 null）。
+        /// 用于弹反成功时调用 ReflectAsPlayerProjectile() 翻转阵营。
+        /// [NonSerialized]：MonoBehaviour 引用不参与 Unity 资产序列化。
+        /// </summary>
+        [System.NonSerialized] public Projectile SourceProjectile;
 
         // ── Builder ──────────────────────────────────────────────────────────
         /// <summary>
@@ -48,6 +54,7 @@ namespace BaseGames.Combat
             private BreakLevel      _break;
             private Vector2         _sourcePosition;
             private int             _sourceLayer;
+            private Projectile      _sourceProjectile;
 
             public Builder() { }
 
@@ -65,6 +72,7 @@ namespace BaseGames.Combat
             public Builder SetBreak(BreakLevel v)                 { _break = v;                                        return this; }
             public Builder SetSourcePos(Vector2 v)                { _sourcePosition = v;                               return this; }
             public Builder SetLayer(int v)                        { _sourceLayer = v;                                  return this; }
+            public Builder SetProjectile(Projectile v)            { _sourceProjectile = v;                             return this; }
 
             public DamageInfo Build() => new DamageInfo
             {
@@ -83,6 +91,7 @@ namespace BaseGames.Combat
                 Break              = _break,
                 SourcePosition     = _sourcePosition,
                 SourceLayer        = _sourceLayer,
+                SourceProjectile   = _sourceProjectile,
             };
         }
 
@@ -95,7 +104,8 @@ namespace BaseGames.Combat
             DamageSourceSO so,
             Vector2        knockbackDir = default,
             Vector2        sourcePos    = default,
-            int            sourceLayer  = 0)
+            int            sourceLayer  = 0,
+            Projectile     sourceProjectile = null)
         {
             int baseAmt = Mathf.RoundToInt(so.BaseDamage * so.DamageMultiplier);
             return new DamageInfo
@@ -115,6 +125,7 @@ namespace BaseGames.Combat
                 KnockbackForce     = so.KnockbackForce,
                 SourcePosition     = sourcePos,
                 SourceLayer        = sourceLayer,
+                SourceProjectile   = sourceProjectile,
             };
         }
     }

Assets/_Game/Scripts/Combat/HitBox.cs

@@ -49,6 +49,9 @@ namespace BaseGames.Combat
         /// <summary>命中确认委托（PlayerCombat / EnemyCombat 订阅）。</summary>
         public event System.Action<DamageInfo> OnHitConfirmed;
 
+        // 宿主投射物缓存（Activate 时填入，DamageInfo.SourceProjectile 写入用）
+        private Projectile _ownerProjectile;
+
         /// <summary>
         /// 激活 HitBox。source/attacker 均可选，未传则使用 Inspector 默认值。
         /// ⚠️ 不存在 Activate(float duration) 重载。
@@ -86,6 +89,8 @@ namespace BaseGames.Combat
                 Debug.LogWarning($"[HitBox] {name}: Collider2D.isTrigger 应为 true。", this);
             // 缓存 IClashService：OnTriggerEnter2D 为物理热路径，避免每次调用 Dictionary 查找
             _clashService = ServiceLocator.GetOrDefault<IClashService>();
+            // 缓存宿主投射物（仅 Projectile GameObject 上挂载的 HitBox 非 null）
+            _ownerProjectile = GetComponent<Projectile>();
         }
 
         private void OnDisable()
@@ -124,7 +129,8 @@ namespace BaseGames.Combat
                 _currentSource,
                 knockDir,
                 _attackerTransform.position,
-                _attackerTransform.gameObject.layer);
+                _attackerTransform.gameObject.layer,
+                _ownerProjectile);
 
             // ① 拼刀检测：当前 HitBox 携带 CanClash 标记，且碰到对立阵营的 HitBox 层
             int otherLayer = other.gameObject.layer;

Assets/_Game/Scripts/Combat/HurtBox.cs

@@ -64,7 +64,14 @@ namespace BaseGames.Combat
             // 2. 弹反检查（_parrySystem == null 时跳过）
             // ParrySystem 只暴露窗口状态，伤害数据留在 Combat 层，无跨程序集数据依赖。
             if (_parrySystem != null && info.Flags.HasFlag(DamageFlags.CanBeParried))
-                if (_parrySystem.ConsumeParry()) return;
+            {
+                if (_parrySystem.ConsumeParry())
+                {
+                    // 若攻击来源是投射物，翻转其阵营 Layer 与飞行方向
+                    info.SourceProjectile?.ReflectAsPlayerProjectile();
+                    return;
+                }
+            }
 
             // 3. 霸体检查（_poiseSource == null 时跳过）
             if (!info.Flags.HasFlag(DamageFlags.ForceBreak) && _poiseSource != null)

Assets/_Game/Scripts/Combat/Projectile.cs

@@ -51,7 +51,25 @@ namespace BaseGames.Combat
             gameObject.layer = (ownerLayer == playerLayer) ? playerProjLayer : enemyProjLayer;
         }
 
-        /// <summary>子类在此设定初速度或附加初始化逻辑。</summary>
+        /// <summary>
+        /// 弹反：将投射物阵营从 EnemyProjectile 切换为 PlayerProjectile。
+        /// 反转飞行方向，并重置 HitBox 命中记录使其能够命中新目标（敌人）。
+        /// 由 HurtBox.ReceiveDamage() 在弹反成功后调用。
+        /// </summary>
+        public virtual void ReflectAsPlayerProjectile()
+        {
+            int playerProjLayer = LayerMask.NameToLayer("PlayerProjectile");
+            if (playerProjLayer < 0) return;
+
+            gameObject.layer = playerProjLayer;
+            Direction = -Direction;
+            _rb.velocity = -_rb.velocity;
+
+            // 重置 HitBox 命中记录，确保反射后可命中新目标
+            _hitBox.Deactivate();
+            _hitBox.Activate(_config?.DamageSource);
+        }
+
         protected virtual void OnInitialized() { }
 
         protected virtual void Update()