Add single item stack type, move the weapon namespace into the item namespace, and I think it's ready to be merged into the new interface

project.godot

@@ -147,7 +147,6 @@ hotbar_previous={
 [internationalization]
 
 locale/translations=PackedStringArray("res://locals/DeathInfo.en.translation", "res://locals/DeathInfo.ja.translation", "res://locals/DeathInfo.zh.translation", "res://locals/InputMapping.en.translation", "res://locals/InputMapping.ja.translation", "res://locals/InputMapping.zh.translation", "res://locals/Log.en.translation", "res://locals/Log.ja.translation", "res://locals/Log.zh.translation", "res://locals/Slogan.en.translation", "res://locals/Slogan.ja.translation", "res://locals/Slogan.zh.translation", "res://locals/UI.en.translation", "res://locals/UI.ja.translation", "res://locals/UI.zh.translation", "res://locals/Weapon.en.translation", "res://locals/Weapon.ja.translation", "res://locals/Weapon.zh.translation")
-locale/test="ja"
 
 [layer_names]
 

scripts/behaviorTree/ai/AiPickNode.cs

@@ -1,5 +1,6 @@
 using ColdMint.scripts.character;
-using ColdMint.scripts.weapon;
+
+using ColdMint.scripts.item.weapon;
 
 namespace ColdMint.scripts.behaviorTree.ai;
 

scripts/character/CharacterTemplate.cs

@@ -1,13 +1,15 @@
 using System;
 using System.Collections.Generic;
 using System.Threading.Tasks;
+
 using ColdMint.scripts.camp;
 using ColdMint.scripts.damage;
 using ColdMint.scripts.debug;
 using ColdMint.scripts.health;
 using ColdMint.scripts.inventory;
 using ColdMint.scripts.utils;
-using ColdMint.scripts.weapon;
+using ColdMint.scripts.item.weapon;
+
 using Godot;
 
 namespace ColdMint.scripts.character;
@@ -69,9 +71,7 @@ public partial class CharacterTemplate : CharacterBody2D
     ///<para>Update finished items</para>
     ///<para>更新完成后的物品</para>
     /// </param>
-    protected virtual void WhenUpdateCurrentItem(Node2D? currentItem)
-    {
-    }
+    protected virtual void WhenUpdateCurrentItem(Node2D? currentItem) { }
 
     //Define a pick up range
     //定义一个拾起范围
@@ -219,6 +219,7 @@ public partial class CharacterTemplate : CharacterBody2D
             //如果指定了战利品表，那么获取战利品表。
             _lootList = LootListManager.GetLootList(lootListId);
         }
+
         if (MaxHp <= 0)
         {
             //If Max blood volume is 0 or less, set Max blood volume to 10
@@ -467,9 +468,7 @@ public partial class CharacterTemplate : CharacterBody2D
         _additionalForce = force;
     }
 
-    protected virtual void OnHit(DamageTemplate damageTemplate)
-    {
-    }
+    protected virtual void OnHit(DamageTemplate damageTemplate) { }
 
     /// <summary>
     /// <para>Handle the event of character death</para>
@@ -599,22 +598,9 @@ public partial class CharacterTemplate : CharacterBody2D
     /// </param>
     protected void ThrowItem(int index, int number, Vector2 velocity)
     {
-        if (_itemContainer == null)
-        {
-            return;
-        }
+        var itemSlotNode = _itemContainer?.GetItemSlotNode(index);
 
-        var itemSlotNode = _itemContainer.GetItemSlotNode(index);
-        if (itemSlotNode == null)
-        {
-            return;
-        }
-
-        var item = itemSlotNode.GetItem();
-        if (item == null)
-        {
-            return;
-        }
+        var item = itemSlotNode?.GetItem();
 
         if (item is not Node2D node2D)
         {
@@ -669,11 +655,11 @@ public partial class CharacterTemplate : CharacterBody2D
         //在物品容器内移除物品
         if (number < 0)
         {
-            itemSlotNode.RemoveItem(item.Quantity);
+            itemSlotNode!.RemoveItem(item.Quantity);
         }
         else
         {
-            itemSlotNode.RemoveItem(number);
+            itemSlotNode!.RemoveItem(number);
         }
     }
 
@@ -728,7 +714,5 @@ public partial class CharacterTemplate : CharacterBody2D
     }
 
 
-    protected virtual void HookPhysicsProcess(ref Vector2 velocity, double delta)
-    {
-    }
+    protected virtual void HookPhysicsProcess(ref Vector2 velocity, double delta) { }
 }

scripts/character/Player.cs

@@ -1,11 +1,13 @@
 using System;
 using System.Text;
 using System.Threading.Tasks;
+
 using ColdMint.scripts.damage;
 using ColdMint.scripts.deathInfo;
 using ColdMint.scripts.map.events;
 using ColdMint.scripts.utils;
-using ColdMint.scripts.weapon;
+using ColdMint.scripts.item.weapon;
+
 using Godot;
 
 namespace ColdMint.scripts.character;

scripts/inventory/HotBar.cs

@@ -396,8 +396,7 @@ public partial class HotBar : HBoxContainer, IItemContainer
             return;
         }
 
-        var itemSlotNode = _itemSlotPackedScene.Instantiate() as ItemSlotNode;
-        if (itemSlotNode == null)
+        if (_itemSlotPackedScene.Instantiate() is not ItemSlotNode itemSlotNode)
         {
             return;
         }

scripts/item/IItemStack.cs

@@ -1,4 +1,6 @@
-using Godot;
+using System;
+
+using Godot;
 
 namespace ColdMint.scripts.item;
 
@@ -17,7 +19,7 @@ public interface IItemStack
     /// <summary>
     /// <para>Quantity of current stack</para>
     /// </summary>
-    int Quantity { get; set; }
+    int Quantity { get; }
 
     /// <summary>
     /// <para>Icon of current item</para>
@@ -33,4 +35,17 @@ public interface IItemStack
     /// <para>Description of current item, which may show in inventory</para>
     /// </summary>
     string? Description { get; }
+
+
+    /// <summary>
+    /// Create a new ItemStack with the given item as the first item
+    /// </summary>
+    public static IItemStack? FromItem(IItem_New item) => ItemTypeManager.StackTypeOf(item.Id) switch
+    {
+        StackType.Common      => throw new NotImplementedException(),
+        StackType.Unique      => throw new NotImplementedException(),
+        StackType.Unstackable => new SingleItemStack(item),
+        null                  => null,
+        _                     => throw new ArgumentException()
+    };
 }

scripts/item/ItemType.cs

@@ -13,13 +13,17 @@ public readonly struct ItemType
     /// <summary>
     /// <para>A function returns a new item instance of this type</para>
     /// </summary>
-    public Func<IItem_New> Getter { get; init; }
+    public Func<IItem_New> NewItemFunc { get; init; }
     /// <summary>
     /// <para>Default icon of items of this type</para>
     /// </summary>
-    public Texture2D? Texture { get; init; }
+    public Texture2D? Icon { get; init; }
     /// <summary>
     /// <para>Max number in item stack of this type</para>
     /// </summary>
     public int MaxStackQuantity { get; init; }
+    /// <summary>
+    /// <para>Determines how items of this type will be stacked</para>
+    /// </summary>
+    public StackType StackType { get; init; }
 }

scripts/item/ItemTypeManager.cs

@@ -28,7 +28,7 @@ public static class ItemTypeManager
     /// <para>Returns null when the id is not registered.</para>
     /// </summary>
     public static IItem_New? NewItem(string id) =>
-        Registry.TryGetValue(id, out var itemType) ? itemType.Getter() : null;
+        Registry.TryGetValue(id, out var itemType) ? itemType.NewItemFunc() : null;
 
     /// <summary>
     /// Get the translated default name of the item type for the given id
@@ -54,6 +54,9 @@ public static class ItemTypeManager
     /// </returns>
     public static Texture2D DefaultIconOf(string id) =>
         Registry.TryGetValue(id, out var itemType)
-            ? itemType.Texture ?? DefaultTexture
+            ? itemType.Icon ?? DefaultTexture
             : DefaultTexture;
+
+    public static int MaxStackQuantityOf(string id) => Registry.TryGetValue(id, out var itemType) ? itemType.MaxStackQuantity : 0;
+    public static StackType? StackTypeOf(string id) => Registry.TryGetValue(id, out var itemType) ? itemType.StackType : null;
 }

scripts/item/SingleItemStack.cs

@@ -0,0 +1,21 @@
+using ColdMint.scripts.inventory;
+
+using Godot;
+
+namespace ColdMint.scripts.item;
+
+/// <summary>
+/// <para>Item stack in inventory</para>
+/// </summary>
+//maybe we'd move this into inventory namespace
+public readonly struct SingleItemStack(IItem_New item) : IItemStack
+{
+    public IItem_New Item { get; init; } = item;
+
+    public string Id => Item.Id;
+    public int MaxQuantity => 1;
+    public int Quantity => 1;
+    public Texture2D Icon => Item.Icon;
+    public string Name => Item.Name;
+    public string? Description => Item.Description;
+}

scripts/item/StackType.cs

@@ -0,0 +1,8 @@
+namespace ColdMint.scripts.item;
+
+public enum StackType
+{
+    Common,
+    Unique,
+    Unstackable,
+}

scripts/item/weapon/ProjectileWeapon.cs

@@ -1,9 +1,11 @@
 using System.Collections.Generic;
+
 using ColdMint.scripts.debug;
 using ColdMint.scripts.projectile;
+
 using Godot;
 
-namespace ColdMint.scripts.weapon;
+namespace ColdMint.scripts.item.weapon;
 
 /// <summary>
 /// <para>Projectile weapons</para>

scripts/item/weapon/WeaponTemplate.cs

@@ -1,11 +1,13 @@
 using System;
+
 using ColdMint.scripts.camp;
 using ColdMint.scripts.character;
 using ColdMint.scripts.damage;
 using ColdMint.scripts.inventory;
+
 using Godot;
 
-namespace ColdMint.scripts.weapon;
+namespace ColdMint.scripts.item.weapon;
 
 /// <summary>
 /// <para>WeaponTemplate</para>