diff --git a/DungeonShooting_Godot/src/framework/ActivityObject.cs b/DungeonShooting_Godot/src/framework/ActivityObject.cs
index 1d448bd..d9c8233 100644
--- a/DungeonShooting_Godot/src/framework/ActivityObject.cs
+++ b/DungeonShooting_Godot/src/framework/ActivityObject.cs
@@ -243,6 +243,13 @@
     }
 
     /// <summary>
+    /// 开始投抛该物体时调用
+    /// </summary>
+    protected virtual void OnThrowStart()
+    {
+    }
+    
+    /// <summary>
     /// 投抛该物体达到最高点时调用
     /// </summary>
     protected virtual void OnThrowMaxHeight(float height)
@@ -676,6 +683,7 @@
         }
     }
     
+    //计算位置
     private void CalcThrowAnimatedPosition()
     {
         if (Scale.y < 0)
@@ -756,6 +764,7 @@
         CalcThrowAnimatedPosition();
         //显示阴影
         ShowShadowSprite();
+        OnThrowStart();
     }
 
     /// <summary>
diff --git a/DungeonShooting_Godot/src/game/item/package/Holster.cs b/DungeonShooting_Godot/src/game/item/package/Holster.cs
index 8cdac81..c1fc36c 100644
--- a/DungeonShooting_Godot/src/game/item/package/Holster.cs
+++ b/DungeonShooting_Godot/src/game/item/package/Holster.cs
@@ -90,8 +90,9 @@
     /// <summary>
     /// 根据索引获取武器
     /// </summary>
-    public Weapon GetWeapon(int index) {
-        if (index >= SlotList.Length)
+    public Weapon GetWeapon(int index)
+    {
+        if (index < 0 || index >= SlotList.Length)
         {
             return null;
         }
diff --git a/DungeonShooting_Godot/src/game/item/weapon/Weapon.cs b/DungeonShooting_Godot/src/game/item/weapon/Weapon.cs
index adcadc9..0c86c92 100644
--- a/DungeonShooting_Godot/src/game/item/weapon/Weapon.cs
+++ b/DungeonShooting_Godot/src/game/item/weapon/Weapon.cs
@@ -901,7 +901,17 @@
     /// 触发扔掉武器抛出的效果, 并不会管武器是否在武器袋中
     /// </summary>
     /// <param name="master">触发扔掉该武器的的角色</param>
-    public virtual void ThrowWeapon(Role master)
+    public void ThrowWeapon(Role master)
+    {
+        ThrowWeapon(master, master.GlobalPosition);
+    }
+
+    /// <summary>
+    /// 触发扔掉武器抛出的效果, 并不会管武器是否在武器袋中
+    /// </summary>
+    /// <param name="master">触发扔掉该武器的的角色</param>
+    /// <param name="startPosition">投抛起始位置</param>
+    public void ThrowWeapon(Role master, Vector2 startPosition)
     {
         //阴影偏移
         ShadowOffset = new Vector2(0, 2);
@@ -919,7 +929,7 @@
         var xf = 20;
         var yf = Utils.RandRangeInt(50, 70);
         var rotate = Utils.RandRangeInt(-90, 90);
-        Throw(new Vector2(30, 15), master.GetCenterPosition(), startHeight, direction, xf, yf, rotate, true);
+        Throw(new Vector2(30, 15), startPosition, startHeight, direction, xf, yf, rotate, true);
     }
 
     protected override void OnThrowOver()