Fixed an issue where the number of weapons to be picked up after being thrown is 0, making it impossible to throw them again.

解决武器扔出后再捡起数量为0，导致无法再次扔出的问题。

scripts/character/CharacterTemplate.cs

@@ -664,14 +664,13 @@ public partial class CharacterTemplate : CharacterBody2D
     {
         //Remove the item from the item container
         //从物品容器内取出物品
-        var item = itemSlotNode.GetItem();
+        var item = itemSlotNode.CreateItemInstance(1);
-
         if (item is not Node2D node2D)
         {
             return;
         }
         
-        NodeUtils.CallDeferredReparent(NodeUtils.FindContainerNode(this, GetNode("/root")), this);
+        NodeUtils.CallDeferredAddChild(NodeUtils.FindContainerNode(node2D, GetNode("/root")), node2D);
         switch (item)
         {
             case PickAbleTemplate pickAbleTemplate:
@@ -684,6 +683,7 @@ public partial class CharacterTemplate : CharacterBody2D
                 var timer = new Timer();
                 pickAbleTemplate.AddChild(timer);
                 timer.WaitTime = _itemCollisionRecoveryTime;
+                timer.Autostart = true;
                 timer.OneShot = true;
                 timer.Timeout += () =>
                 {
@@ -694,7 +694,6 @@ public partial class CharacterTemplate : CharacterBody2D
                     pickAbleTemplate.SetCollisionMaskValue(Config.LayerNumber.Platform, true);
                     timer.QueueFree();
                 };
-                timer.Start();
                 pickAbleTemplate.Sleeping = false;
                 //Setting an initial speed of 0 for items here prevents the problem of throwing items too fast.
                 //在这里给物品设置一个为0的初始速度，可防止扔出物品时速度过快的问题。

scripts/inventory/ItemSlotNode.cs

@@ -121,6 +121,12 @@ public partial class ItemSlotNode : MarginContainer
         }
 
         var duplicate = node2D.Duplicate();
+        if (duplicate is not Node2D newNode2D)
+        {
+            return null;
+        }
+
+        newNode2D.GlobalPosition = node2D.GlobalPosition;
         if (duplicate is not IItem newItem)
         {
             return null;
@@ -138,6 +144,26 @@ public partial class ItemSlotNode : MarginContainer
         return newItem;
     }
 
+    /// <summary>
+    /// <para>Empty the inventory</para>
+    /// <para>清空物品栏内的物品</para>
+    /// </summary>
+    public void ClearItem()
+    {
+        if (_item == null)
+        {
+            return;
+        }
+
+        if (_item is Node node)
+        {
+            node.QueueFree();
+        }
+
+        _item = null;
+        UpdateAllDisplay();
+    }
+
     public override void _DropData(Vector2 atPosition, Variant data)
     {
         if (_iconTextureRect == null)
@@ -162,7 +188,7 @@ public partial class ItemSlotNode : MarginContainer
             return;
         }
 
-        itemSlotNode.Item = null;
+        itemSlotNode.ClearItem();
         AddItem(item);
     }
 
@@ -344,7 +370,7 @@ public partial class ItemSlotNode : MarginContainer
         _item.Quantity -= removeNumber;
         if (_item.Quantity <= 0)
         {
-            Item = null;
+            ClearItem();
         }
 
         return removeNumber;

scripts/utils/NodeUtils.cs

@@ -46,7 +46,7 @@ public static class NodeUtils
     /// <param name="childNode"></param>
     public static void CallDeferredReparent(Node parentNode, Node childNode)
     {
-        parentNode.CallDeferred("reparent", childNode);
+        childNode.CallDeferred("reparent", parentNode);
     }