diff --git a/DungeonShooting_Godot/src/common/NodeExtend.cs b/DungeonShooting_Godot/src/common/NodeExtend.cs
new file mode 100644
index 0000000..a341103
--- /dev/null
+++ b/DungeonShooting_Godot/src/common/NodeExtend.cs
@@ -0,0 +1,41 @@
+using Godot;
+using System;
+
+public static class NodeExtend
+{
+
+    public static ThrowNode StartThrow(this Node2D node, Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate)
+    {
+        return StartThrow<ThrowNode>(node, size, start, startHeight, direction, xSpeed, ySpeed, rotate);
+    }
+
+    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;
+    }
+
+    public static ThrowNode StartThrow(this Node2D node, Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Sprite shadowTarget)
+    {
+        return StartThrow<ThrowNode>(node, size, start, startHeight, direction, xSpeed, ySpeed, rotate, shadowTarget);
+    }
+
+    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>();
+        inst.StartThrow(size, start, startHeight, direction, xSpeed, ySpeed, rotate, node, shadowTarget);
+        return inst;
+    }
+
+    public static bool StopThrow(this Node2D node)
+    {
+        ThrowNode parent = node.GetParentOrNull<ThrowNode>();
+        if (parent != null) {
+            parent.StopThrow();
+            return true;
+        }
+        return false;
+    }
+}
\ No newline at end of file
diff --git a/DungeonShooting_Godot/src/effect/ThrowNode.cs b/DungeonShooting_Godot/src/effect/ThrowNode.cs
index 3dcec01..65aa23b 100644
--- a/DungeonShooting_Godot/src/effect/ThrowNode.cs
+++ b/DungeonShooting_Godot/src/effect/ThrowNode.cs
@@ -89,7 +89,7 @@
     /// <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 InitThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount)
+    public void StartThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount)
     {
         if (CollisionShape != null)
         {
@@ -130,9 +130,9 @@
     /// <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 InitThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount, Sprite shadowTarget)
+    public void StartThrow(Vector2 size, Vector2 start, float startHeight, float direction, float xSpeed, float ySpeed, float rotate, Node2D mount, Sprite shadowTarget)
     {
-        InitThrow(size, start, startHeight, direction, xSpeed, ySpeed, rotate, mount);
+        StartThrow(size, start, startHeight, direction, xSpeed, ySpeed, rotate, mount);
         ShadowTarget = shadowTarget;
         if (shadowTarget != null)
         {
@@ -162,6 +162,9 @@
         }
     }
 
+    /// <summary>
+    /// 停止投抛运动
+    /// </summary>
     public Node2D StopThrow()
     {
         var mount = Mount;
diff --git a/DungeonShooting_Godot/src/role/Role.cs b/DungeonShooting_Godot/src/role/Role.cs
index bfd21c2..b6eabb7 100644
--- a/DungeonShooting_Godot/src/role/Role.cs
+++ b/DungeonShooting_Godot/src/role/Role.cs
@@ -156,14 +156,13 @@
                 gun.RotationDegrees = 180;
             }
             gun.Position = Vector2.Zero;
-            var temp = new ThrowGun();
             var startPos = GlobalPosition + new Vector2(0, 0);
             var startHeight = 6;
             var direction = GlobalRotationDegrees + MathUtils.RandRangeInt(-20, 20);
             var xf = 30;
             var yf = MathUtils.RandRangeInt(60, 120);
             var rotate = MathUtils.RandRangeInt(-180, 180);
-            temp.InitThrow(new Vector2(20, 20), startPos, startHeight, direction, xf, yf, rotate, gun, gun.GunSprite);
+            gun.StartThrow<ThrowGun>(new Vector2(20, 20), startPos, startHeight, direction, xf, yf, rotate, gun.GunSprite);
         }
     }
 
diff --git a/DungeonShooting_Godot/src/weapon/gun/Gun.cs b/DungeonShooting_Godot/src/weapon/gun/Gun.cs
index 4267799..b8583a2 100644
--- a/DungeonShooting_Godot/src/weapon/gun/Gun.cs
+++ b/DungeonShooting_Godot/src/weapon/gun/Gun.cs
@@ -468,10 +468,8 @@
 
     public void Tnteractive(Role master)
     {
-        var parent = GetParentOrNull<ThrowNode>();
-        if (parent != null)
+        if (this.StopThrow())
         {
-            parent.StopThrow();
             master.Holster.PickupGun(this);
         }
     }
diff --git a/DungeonShooting_Godot/src/weapon/gun/OrdinaryGun.cs b/DungeonShooting_Godot/src/weapon/gun/OrdinaryGun.cs
index f3dc8ea..18bc183 100644
--- a/DungeonShooting_Godot/src/weapon/gun/OrdinaryGun.cs
+++ b/DungeonShooting_Godot/src/weapon/gun/OrdinaryGun.cs
@@ -15,7 +15,6 @@
     protected override void OnFire()
     {
         //创建一个弹壳
-        var temp = new ThrowShell();
         var startPos = GlobalPosition + new Vector2(0, 5);
         var startHeight = 6;
         var direction = GlobalRotationDegrees + MathUtils.RandRangeInt(-30, 30) + 180;
@@ -23,7 +22,7 @@
         var yf = MathUtils.RandRangeInt(60, 120);
         var rotate = MathUtils.RandRangeInt(-720, 720);
         var sprite = Attribute.ShellPack.Instance<Sprite>();
-        temp.InitThrow(new Vector2(5, 10), startPos, startHeight, direction, xf, yf, rotate, sprite, sprite);
+        sprite.StartThrow<ThrowGun>(new Vector2(5, 10), startPos, startHeight, direction, xf, yf, rotate, sprite);
         //创建抖动
         MainCamera.Main.ProssesDirectionalShake(Vector2.Right.Rotated(GlobalRotation) * 1.5f);
     }
diff --git a/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs b/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs
index e33895d..56e7651 100644
--- a/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs
+++ b/DungeonShooting_Godot/src/weapon/gun/ThrowGun.cs
@@ -23,7 +23,7 @@
         //如果落地高度不够低, 再抛一次
         if (StartYSpeed > 1)
         {
-            InitThrow(Size, GlobalPosition, 0, Direction, XSpeed * 0.8f, StartYSpeed * 0.5f, RotateSpeed * 0.5f, null);
+            StartThrow(Size, GlobalPosition, 0, Direction, XSpeed * 0.8f, StartYSpeed * 0.5f, RotateSpeed * 0.5f, null);
         }
         else //结束
         {
diff --git a/DungeonShooting_Godot/src/weapon/shell/ThrowShell.cs b/DungeonShooting_Godot/src/weapon/shell/ThrowShell.cs
index 4cbb3ce..914ee5d 100644
--- a/DungeonShooting_Godot/src/weapon/shell/ThrowShell.cs
+++ b/DungeonShooting_Godot/src/weapon/shell/ThrowShell.cs
@@ -17,7 +17,7 @@
         //如果落地高度不够低, 再抛一次
         if (StartYSpeed > 1)
         {
-            InitThrow(Size, GlobalPosition, 0, Direction, XSpeed * 0.8f, StartYSpeed * 0.5f, RotateSpeed * 0.5f, null);
+            StartThrow(Size, GlobalPosition, 0, Direction, XSpeed * 0.8f, StartYSpeed * 0.5f, RotateSpeed * 0.5f, null);
         }
         else
         {