diff --git a/DungeonShooting_Godot/src/common/NodeExtend.cs b/DungeonShooting_Godot/src/common/NodeExtend.cs
index 2a2479a..7ad30d8 100644
--- a/DungeonShooting_Godot/src/common/NodeExtend.cs
+++ b/DungeonShooting_Godot/src/common/NodeExtend.cs
@@ -11,10 +11,7 @@
 
     public static T StartThrow<T>(this Node2D node, Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate) where T : ThrowNode
     {
-        StartThrow<T>(node, size, start, startHeight, direction, xSpeed, ySpeed, rotate, null);
-        T inst = Activator.CreateInstance<T>();
-        inst.StartThrow(size, start, startHeight, direction, xSpeed, ySpeed, rotate, node);
-        return inst;
+        return StartThrow<T>(node, size, start, startHeight, direction, xSpeed, ySpeed, rotate, null);
     }
 
     public static ThrowNode StartThrow(this Node2D node, Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Sprite shadowTarget)
@@ -24,7 +21,21 @@
 
     public static T StartThrow<T>(this Node2D node, Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Sprite shadowTarget) where T : ThrowNode
     {
-        T inst = Activator.CreateInstance<T>();
+        ThrowNode throwNode = node.GetParentOrNull<ThrowNode>();
+        T inst;
+        if (throwNode == null)
+        {
+            inst = Activator.CreateInstance<T>();
+        }
+        else if (throwNode is T)
+        {
+            inst = throwNode as T;
+        }
+        else
+        {
+            throwNode.StopThrow();
+            inst = Activator.CreateInstance<T>();
+        }
         inst.StartThrow(size, start, startHeight, direction, xSpeed, ySpeed, rotate, node, shadowTarget);
         return inst;
     }
diff --git a/DungeonShooting_Godot/src/effect/ThrowNode.cs b/DungeonShooting_Godot/src/effect/ThrowNode.cs
index 4615833..3260128 100644
--- a/DungeonShooting_Godot/src/effect/ThrowNode.cs
+++ b/DungeonShooting_Godot/src/effect/ThrowNode.cs
@@ -92,7 +92,7 @@
     /// <param name="rotate">旋转速度</param>
     /// <param name="mount">需要挂载的节点</param>
     /// <param name="texutre">抛射的节点显示的纹理, 用于渲染阴影用</param>
-    public void StartThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount)
+    public virtual void StartThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount)
     {
         if (CollisionShape != null)
         {
@@ -112,10 +112,19 @@
         if (mount != null)
         {
             Mount = mount;
-            AddChild(mount);
+            var parent = mount.GetParent();
+            if (parent == null)
+            {
+                AddChild(mount);
+            }
+            else if (parent != this)
+            {
+                parent.RemoveChild(mount);
+                AddChild(mount);
+            }
             mount.Position = new Vector2(0, -startHeight);
         }
-        if (GetParentOrNull<Node>() == null)
+        if (GetParent() == null)
         {
             RoomManager.Current.SortRoot.AddChild(this);
         }
@@ -133,7 +142,7 @@
     /// <param name="rotate">旋转速度</param>
     /// <param name="mount">需要挂载的节点</param>
     /// <param name="shadowTarget">抛射的节点显示的纹理, 用于渲染阴影用</param>
-    public void StartThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount, Sprite shadowTarget)
+    public virtual void StartThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount, Sprite shadowTarget)
     {
         StartThrow(size, start, startHeight, direction, xSpeed, ySpeed, rotate, mount);
         ShadowTarget = shadowTarget;
@@ -171,7 +180,7 @@
     public Node2D StopThrow()
     {
         var mount = Mount;
-        var parent = GetParentOrNull<Node>();
+        var parent = GetParent();
         if (parent != null && mount != null)
         {
             var gp = mount.GlobalPosition;
diff --git a/DungeonShooting_Godot/src/weapon/gun/Gun.cs b/DungeonShooting_Godot/src/weapon/gun/Gun.cs
index f61a605..7fe353d 100644
--- a/DungeonShooting_Godot/src/weapon/gun/Gun.cs
+++ b/DungeonShooting_Godot/src/weapon/gun/Gun.cs
@@ -487,18 +487,35 @@
                 return;
             }
             var gun = master.Holster.GetGun(index);
+            //子弹上限
             var maxCount = Attribute.MaxAmmoCapacity;
-
+            //是否捡到子弹
+            var flag = false;
             if (ResidueAmmo > 0 && gun.CurrAmmo + gun.ResidueAmmo < maxCount)
             {
-                ResidueAmmo = gun.PickUpAmmo(ResidueAmmo);
+                var count = gun.PickUpAmmo(ResidueAmmo);
+                if (count != ResidueAmmo)
+                {
+                    ResidueAmmo = count;
+                    flag = true;
+                }
             }
             if (CurrAmmo > 0 && gun.CurrAmmo + gun.ResidueAmmo < maxCount)
             {
-                CurrAmmo = gun.PickUpAmmo(CurrAmmo);
+                var count = gun.PickUpAmmo(CurrAmmo);
+                if (count != CurrAmmo)
+                {
+                    CurrAmmo = count;
+                    flag = true;
+                }
             }
-            //CurrAmmo
-            //ResidueAmmo
+            //播放互动效果
+            if (flag)
+            {
+                this.StartThrow<ThrowGun>(new Vector2(20, 20), GlobalPosition, 0, 0,
+                    MathUtils.RandRangeInt(-20, 20), MathUtils.RandRangeInt(20, 50),
+                    MathUtils.RandRangeInt(-180, 180), GunSprite);
+            }
         }
         else//没有武器
         {
diff --git a/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs b/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs
index 56e7651..9ea6b86 100644
--- a/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs
+++ b/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs
@@ -10,6 +10,13 @@
         base._Ready();
         ZIndex = 2;
     }
+
+    public override void StartThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount)
+    {
+        base.StartThrow(size, start, startHeight, direction, xSpeed, ySpeed, rotate, mount);
+        fristOver = true;
+    }
+
     protected override void OnOver()
     {
         if (fristOver)