Merge pull request #6 from Web13234/master

Add Packsack Stack

scripts/inventory/HotBar.cs

@@ -20,7 +20,7 @@ public partial class HotBar : HBoxContainer
         NodeUtils.DeleteAllChild(this);
         for (var i = 0; i < Config.HotBarSize; i++)
         {
-            _itemContainer.AddItemSlot(this, i);
+            _itemContainer.AddItemSlot(this);
         }
     }
 

scripts/inventory/IItemContainer.cs

@@ -34,6 +34,17 @@ public interface IItemContainer : IEnumerable<ItemSlotNode>
     /// <returns></returns>
     bool AddItem(IItem item);
 
+    /// <summary>
+    /// <para>Determines the number of items that can be received from the specified pile</para>
+    /// <para>判断能从指定物品堆中接收的物品数量</para>
+    /// </summary>
+    /// <param name="itemStack">
+    /// <para>Item stack to add to the current container</para>
+    /// <para>向该容器中放入物品的物品堆</para>
+    /// </param>
+    /// <returns></returns>
+    int CanAddItemStack(IItemStack itemStack);
+
     /// <summary>
     /// <para>Add an stack of items to this container</para>
     /// <para>向当前容器中存入一堆物品</para>
@@ -179,8 +190,8 @@ public interface IItemContainer : IEnumerable<ItemSlotNode>
     ItemSlotNode? Match(IItemStack stack);
 
     /// <summary>
-    /// <para>Match the first item slot that has item stack that satisfies the predicate</para>
-    /// <para>匹配首个拥有满足指定条件的物品堆的物品槽</para>
+    /// <para>Match the first item slot that satisfies the predicate</para>
+    /// <para>匹配首个拥有满足指定条件的物品槽</para>
     /// </summary>
     /// <param name="predicate"></param>
     /// <returns>
@@ -188,11 +199,11 @@ public interface IItemContainer : IEnumerable<ItemSlotNode>
     /// <para>若没有满足条件的槽位，返回null</para>
     /// </returns>
     /// <seealso cref="MatchAll"/>
-    ItemSlotNode? Match(Func<IItemStack?, bool> predicate);
+    ItemSlotNode? Match(Func<ItemSlotNode, bool> predicate);
 
     /// <summary>
-    /// <para>Match all item slots that has item stack that satisfies the predicate</para>
-    /// <para>匹配所有拥有满足指定条件的物品堆的物品槽</para>
+    /// <para>Match all item slots that satisfies the predicate</para>
+    /// <para>匹配所有拥有满足指定条件的物品槽</para>
     /// </summary>
     /// <param name="predicate"></param>
     /// <returns>
@@ -200,7 +211,7 @@ public interface IItemContainer : IEnumerable<ItemSlotNode>
     /// <para>包含匹配到的槽位的IEnumerable，当没有满足条件的槽位时为空</para>
     /// </returns>
     /// <seealso cref="Match(Func{IItemStack?,bool})"/>
-    IEnumerable<ItemSlotNode> MatchAll(Func<IItemStack?, bool> predicate);
+    IEnumerable<ItemSlotNode> MatchAll(Func<ItemSlotNode, bool> predicate);
 
 
     /// <summary>
@@ -208,8 +219,7 @@ public interface IItemContainer : IEnumerable<ItemSlotNode>
     /// <para>添加物品槽</para>
     /// </summary>
     /// <param name="rootNode"></param>
-    /// <param name="index"></param>
-    void AddItemSlot(Node rootNode, int index);
+    void AddItemSlot(Node rootNode);
 
     /// <summary>
     /// <para>SelectTheNextItemSlot</para>

scripts/inventory/ItemSlotNode.cs

@@ -144,18 +144,6 @@ public partial class ItemSlotNode : MarginContainer
         UpdateAllDisplay();
     }
 
-    /// <summary>
-    /// <para>Can the specified item be placed in the item slot?</para>
-    /// <para>指定的物品是否可设置在物品槽内？</para>
-    /// </summary>
-    /// <param name="item"></param>
-    /// <returns></returns>
-    public bool CanAddItem(IItem item)
-    {
-        if (_itemStack == null) return true;
-        return _itemStack.CanAddItem(item);
-    }
-
     /// <summary>
     /// <para>
     /// Set item stack for this slot, this will completely replace current item stack.
@@ -177,6 +165,18 @@ public partial class ItemSlotNode : MarginContainer
         return result;
     }
 
+    /// <summary>
+    /// <para>Can the specified item be placed in the item slot?</para>
+    /// <para>指定的物品是否可设置在物品槽内？</para>
+    /// </summary>
+    /// <param name="item"></param>
+    /// <returns></returns>
+    public bool CanAddItem(IItem item)
+    {
+        if (_itemStack == null) return true;
+        return _itemStack.CanAddItem(item);
+    }
+
     /// <summary>
     /// <para>Try to add an item to this slot, if it can't be added to this slot, return false</para>
     /// <para>尝试向当前槽位中加入物品，如果该物品不能被放入该槽位，返回false</para>
@@ -202,6 +202,21 @@ public partial class ItemSlotNode : MarginContainer
         return result;
     }
 
+    /// <summary>
+    /// <para>Determines the number of items that can be received from the specified pile</para>
+    /// <para>判断能从指定物品堆中接收的物品数量</para>
+    /// </summary>
+    /// <param name="itemStack">
+    /// <para>Item stack to add to the current slot</para>
+    /// <para>向该物品槽中放入物品的物品堆</para>
+    /// </param>
+    /// <returns></returns>
+    public int CanAddItemStack(IItemStack itemStack)
+    {
+        if (_itemStack is null) return itemStack.Quantity;
+        return _itemStack.CanTakeFrom(itemStack);
+    }
+
     /// <summary>
     /// <para>Try to combine an item stack into this slot</para>
     /// <para>尝试将一个物品堆合并至该槽位中</para>

scripts/inventory/UniversalItemContainer.cs

@@ -22,7 +22,7 @@ public class UniversalItemContainer : IItemContainer
 {
     private readonly PackedScene? _itemSlotPackedScene = GD.Load<PackedScene>("res://prefab/ui/ItemSlot.tscn");
 
-    private readonly List<ItemSlotNode>? _itemSlotNodes = new();
+    private readonly List<ItemSlotNode>? _itemSlotNodes = [];
 
     /// <summary>
     /// <para>Character</para>
@@ -55,6 +55,16 @@ public class UniversalItemContainer : IItemContainer
         return itemSlotNode.AddItem(item);
     }
 
+    public int CanAddItemStack(IItemStack itemStack)
+    {
+        var testItem = itemStack.GetItem();
+        if (testItem is null) return 0;
+        var slots = MatchAll(slot => slot.CanAddItem(testItem));
+        return
+            Math.Min(itemStack.Quantity,
+                     slots.Select(slot => slot.CanAddItemStack(itemStack)).Sum());
+    }
+
     public bool AddItemStack(IItemStack itemStack)
     {
         while (true)
@@ -169,14 +179,14 @@ public class UniversalItemContainer : IItemContainer
         return _itemSlotNodes?.FirstOrDefault(itemSlotNode => itemSlotNode.CanAddItem(stack.GetItem()!));
     }
 
-    public ItemSlotNode? Match(Func<IItemStack?, bool> predicate)
+    public ItemSlotNode? Match(Func<ItemSlotNode, bool> predicate)
     {
-        return _itemSlotNodes?.FirstOrDefault(node => predicate(node.GetItemStack()));
+        return _itemSlotNodes?.FirstOrDefault(predicate);
     }
 
-    public IEnumerable<ItemSlotNode> MatchAll(Func<IItemStack?, bool> predicate)
+    public IEnumerable<ItemSlotNode> MatchAll(Func<ItemSlotNode, bool> predicate)
     {
-        return from node in _itemSlotNodes where predicate(node.GetItemStack()) select node;
+        return from node in _itemSlotNodes where predicate(node) select node;
     }
 
 
@@ -211,7 +221,7 @@ public class UniversalItemContainer : IItemContainer
     /// <para>Add items tank</para>
     /// <para>添加物品槽</para>
     /// </summary>
-    public void AddItemSlot(Node rootNode, int index)
+    public void AddItemSlot(Node rootNode)
     {
         if (_itemSlotNodes == null || _itemSlotPackedScene == null)
         {
@@ -224,7 +234,7 @@ public class UniversalItemContainer : IItemContainer
             return;
         }
 
-        itemSlotNode.IsSelect = index == _selectIndex;
+        itemSlotNode.IsSelect = (_itemSlotNodes.Count ) == _selectIndex;
         _itemSlotNodes.Add(itemSlotNode);
     }
 

scripts/item/Packsack.cs

@@ -1,4 +1,5 @@
 using ColdMint.scripts.inventory;
+using ColdMint.scripts.item.itemStacks;
 
 using Godot;
 
@@ -25,8 +26,8 @@ public partial class Packsack : RigidBody2D, IItem
 
     public void Destroy()
     {
-        if (_itemContainer == null) return;
-        foreach (var itemSlot in _itemContainer)
+        if (ItemContainer == null) return;
+        foreach (var itemSlot in ItemContainer)
         {
             itemSlot.ClearSlot();
         }
@@ -36,16 +37,20 @@ public partial class Packsack : RigidBody2D, IItem
 
     public bool CanStackWith(IItem item) => false;
 
-    private IItemContainer? _itemContainer;
+    public IItemStack? SpecialStack()
+    {
+        return new PacksackStack(this);
+    }
+
+
+    public IItemContainer? ItemContainer { get; private set; }
 
     public override void _Ready()
     {
         base._Ready();
-        _itemContainer = new UniversalItemContainer();
-    }
+        ItemContainer = new UniversalItemContainer();
 
-    public IItemContainer? GetItemContainer()
-    {
-        return _itemContainer;
+        //Test: Add one ItemSlot for pack
+        ItemContainer.AddItemSlot(this);
     }
 }

scripts/item/itemStacks/IItemStack.cs

@@ -78,8 +78,8 @@ public interface IItemStack
     /// <para>判断能从指定物品堆中接收的物品数量</para>
     /// </summary>
     /// <param name="itemStack">
-    /// <para>向该物品堆中放入物品的物品堆</para>
     /// <para>Item stack to add to the current stack</para>
+    /// <para>向该物品堆中放入物品的物品堆</para>
     /// </param>
     /// <returns></returns>
     public int CanTakeFrom(IItemStack itemStack);

scripts/item/itemStacks/PacksackStack.cs

@@ -0,0 +1,79 @@
+using System;
+
+using Godot;
+
+namespace ColdMint.scripts.item.itemStacks;
+
+/// <summary>
+/// <para>ItemStack for <see cref="Packsack"/> item. Can add items into pack by stack them to this stack.</para>
+/// <para>用于<see cref="Packsack"/>物品的堆栈。可以将物品堆叠到此堆栈中，从而将物品添加到背包中。</para>
+/// </summary>
+/// <param name="packsack"></param>
+public class PacksackStack(Packsack packsack) : IItemStack
+{
+    public int MaxQuantity => 1;
+    public int Quantity => 1;
+    public bool Empty { get; private set; }
+    public Texture2D Icon => packsack.Icon;
+    public string Name => packsack.Name;
+    public string? Description => packsack.Description;
+
+    //todo: 只拒绝是背包的物品是权宜之计，应该为物品加入一个“是否可以放入背包”的属性来实现这个判断。
+    public bool CanAddItem(IItem item)
+    {
+        if (item is Packsack) return false;
+        return packsack.ItemContainer?.CanAddItem(item) ?? false;
+    }
+
+    public bool AddItem(IItem item)
+    {
+        if (item is Packsack) return false;
+        return packsack.ItemContainer?.AddItem(item) ?? false;
+    }
+
+    public int CanTakeFrom(IItemStack itemStack)
+    {
+        if (itemStack.GetItem() is Packsack) return 0;
+        return packsack.ItemContainer?.CanAddItemStack(itemStack) ?? 0;
+    }
+
+    public bool TakeFrom(IItemStack itemStack)
+    {
+        if (itemStack.GetItem() is Packsack) return false;
+        return packsack.ItemContainer?.AddItemStack(itemStack) ?? false;
+    }
+
+    public IItem? GetItem()
+    {
+        return Empty ? packsack : null;
+    }
+
+    public IItem? PickItem()
+    {
+        if (Empty) return null;
+        Empty = true;
+        return packsack;
+    }
+
+    public IItemStack? PickItems(int value)
+    {
+        if (Empty || value == 0) return null;
+        Empty = true;
+        return new PacksackStack(packsack);
+    }
+
+    public int RemoveItem(int number)
+    {
+        if (Empty || number == 0) return number;
+        Empty = true;
+        packsack.Destroy();
+        return Math.Max(0, number - 1);
+    }
+
+    public void ClearStack()
+    {
+        if (Empty) return;
+        packsack.Destroy();
+        Empty = true;
+    }
+}