Fixed When switching items, players would have multiple items stacked on their hands.

修复切换物品时，玩家手上会叠加多个物品。

scripts/character/CharacterTemplate.cs

@@ -839,6 +839,7 @@ public partial class CharacterTemplate : CharacterBody2D
         }
 
         ProtectedItemContainer?.RemoveItem(index, 1);
+        originalItem.QueueFreeSelf();
     }
 
 

scripts/inventory/IItem.cs

@@ -15,6 +15,24 @@ public interface IItem
     /// </summary>
     string Id { get; set; }
     
+    /// <summary>
+    /// <para>ShowSelf</para>
+    /// <para>显示自身</para>
+    /// </summary>
+    void ShowSelf();
+
+    /// <summary>
+    /// <para>QueueFreeSelf</para>
+    /// <para>销毁自身</para>
+    /// </summary>
+    void QueueFreeSelf();
+    
+    /// <summary>
+    /// <para>HideSelf</para>
+    /// <para>隐藏自身</para>
+    /// </summary>
+    void HideSelf();
+
     /// <summary>
     /// <para>Icon of current item</para>
     /// <para>当前项目的图标</para>

scripts/inventory/PlaceholderItem.cs

@@ -10,6 +10,22 @@ public class PlaceholderItem : IItem
 {
     public int Index { get; set; }
     public string Id { get; set; }
+
+    public void ShowSelf()
+    {
+        
+    }
+
+    public void QueueFreeSelf()
+    {
+        
+    }
+
+    public void HideSelf()
+    {
+        
+    }
+
     public Texture2D Icon { get; }
     public string Name { get; }
     public string? Description { get; } = null;

scripts/inventory/UniversalItemContainer.cs

@@ -118,6 +118,10 @@ public class UniversalItemContainer(int totalCapacity) : IItemContainer
             _itemDictionary[nextAvailableIndex] = item;
             item.Index = nextAvailableIndex;
             item.ItemContainer = this;
+            if (nextAvailableIndex != _selectIndex)
+            {
+                item.HideSelf();
+            }
             UpdateNextAvailableIndex();
             UpdateSelectStatus(nextAvailableIndex, item);
             ItemDataChangeEvent?.Invoke(new ItemDataChangeEvent
@@ -154,6 +158,7 @@ public class UniversalItemContainer(int totalCapacity) : IItemContainer
             {
                 //New items are fully shared.
                 //新物品完全被均摊。
+                item.HideSelf();
                 return originalQuantity;
             }
 
@@ -179,6 +184,10 @@ public class UniversalItemContainer(int totalCapacity) : IItemContainer
         _itemDictionary[finalNextAvailableIndex] = item;
         item.Index = finalNextAvailableIndex;
         item.ItemContainer = this;
+        if (finalNextAvailableIndex != _selectIndex)
+        {
+            item.HideSelf();
+        }
         UpdateNextAvailableIndex();
         UpdateSelectStatus(finalNextAvailableIndex, item);
         ItemDataChangeEvent?.Invoke(new ItemDataChangeEvent
@@ -380,6 +389,7 @@ public class UniversalItemContainer(int totalCapacity) : IItemContainer
         var oldItem = GetItem(oldIndex);
         if (oldItem != null)
         {
+            oldItem.HideSelf();
             oldItem.IsSelect = false;
         }
 
@@ -388,6 +398,7 @@ public class UniversalItemContainer(int totalCapacity) : IItemContainer
         var newItem = GetItem(newIndex);
         if (newItem != null)
         {
+            newItem.ShowSelf();
             newItem.IsSelect = true;
         }
 

scripts/pickable/PickAbleTemplate.cs

@@ -20,6 +20,22 @@ public partial class PickAbleTemplate : RigidBody2D, IItem
     //不要导出此字段，因为ID是在yaml内指定的。
     public virtual string Id { get; set; } = "ID";
     [Export] protected Texture2D? UniqueIcon { get; set; }
+
+    public void ShowSelf()
+    {
+        Show();
+    }
+
+    public void QueueFreeSelf()
+    {
+        QueueFree();
+    }
+
+    public void HideSelf()
+    {
+        Hide();
+    }
+
     public Texture2D Icon => UniqueIcon ?? ItemTypeManager.DefaultIconOf(Id);
 
     public new string Name