重做物品系统

Assets/ModuleItem/Runtime/Inventory/Inventory.cs

@@ -0,0 +1,69 @@
+using System;
+using System.Linq;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+/// <summary>
+/// 物品库存
+/// </summary>
+public class Inventory {
+	/// <summary> 背包容量 </summary>
+	public int capacity;
+	/// <summary> 插槽列表 </summary>
+	public List<InventorySlot> slots;
+	/// <summary> 改变事件 </summary>
+	public event Action<Inventory> OnChange;
+
+	/// <summary> 物品库存 </summary>
+	public Inventory(int capacity) {
+		this.capacity = capacity;
+		IEnumerable<int> enumerable = Enumerable.Range(0, capacity);
+		slots = enumerable.Select(_ => new InventorySlot()).ToList();
+	}
+
+	/// <summary> 应用修改 </summary>
+	public void Apply() => OnChange?.Invoke(this);
+	/// <summary> 遍历数组 </summary>
+	public void ForEach(Action<InventorySlot> action) => slots.ForEach(action);
+	/// <summary> 获取一个空插槽 </summary>
+	public InventorySlot Empty() => slots.FirstOrDefault(s => s.item == null);
+	/// <summary> 相同堆叠插槽 </summary>
+	public List<InventorySlot> Stackable(InventoryItem item) => slots.Where(slot => slot.IsStackable(item)).ToList();
+
+	/// <summary> 添加物品 </summary>
+	public void AddItem(InventoryItem item, int count) {
+		// 合并重复可堆叠
+		int remain = MergeToSlots(item, count);
+		// 如果还有剩余，按照MaxStack分批放入空位
+		if (remain > 0) { AddToSlots(item, remain, true); }
+		OnChange?.Invoke(this);
+	}
+
+	/// <summary> 合并到插槽 </summary> 
+	public int MergeToSlots(InventoryItem item, int count) {
+		// 查询所有可合并的插槽
+		var sameSlots = Stackable(item);
+		// 合并到已有插槽
+		sameSlots.ForEach(obj => obj.Settings(ref count));
+		return count;
+	}
+
+	/// <summary> 添加物品 </summary>
+	public void AddToSlots(InventoryItem item, int count, bool isWhile) {
+		// 取一个空插槽
+		InventorySlot emptySlot = Empty();
+		// 没有空插槽则退出
+		if (emptySlot == null) { return; }
+		// 堆叠数量 = Min（物品数量 ,  最大堆叠数量）
+		int addCount = Mathf.Min(count, item.stack);
+		// 计算剩余物品数量
+		int remain = count - addCount;
+		// 填充进空插槽
+		emptySlot.Settings(item, addCount);
+		// 没有剩余或者不循环则退出
+		if (remain == 0 || !isWhile) { return; }
+		// 还有余量循环执行添加
+		AddToSlots(item, remain, isWhile);
+	}
+}