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Src/Crafting/ICrating.cs

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+using System;
+using System.Collections.Generic;
+
+namespace Net.Project.B.Craft
+{
+    // 合成配方
+    public interface ICraftRecipe
+    {
+        int Id { get; }
+        public int CraftItemId { get; }
+        IReadOnlyDictionary<int,int> RequiredItems { get; }
+        IReadOnlyDictionary<string,int> RequiredTags { get; }
+        IReadOnlyCollection<ICraftEnvironment> RequiredEnvironments { get; }
+    }
+
+    public class CraftRecipe : ICraftRecipe
+    {
+        public int Id { get; set; }
+        public int CraftItemId { get; set; }
+        public readonly Dictionary<int, int> RequiredItems = new();
+        public readonly Dictionary<string,int> RequiredTag = new();
+        public readonly HashSet<ICraftEnvironment> RequiredEnvironments = new();
+
+        IReadOnlyDictionary<int, int> ICraftRecipe.RequiredItems => RequiredItems;
+        IReadOnlyDictionary<string, int> ICraftRecipe.RequiredTags => RequiredTag;
+        IReadOnlyCollection<ICraftEnvironment> ICraftRecipe.RequiredEnvironments => RequiredEnvironments;
+    }
+    // 合成服务
+    public interface ICraftingService
+    {
+        /// <summary>
+        /// 获取可合成配方（无 GC 分配），写入调用方传入的缓冲区
+        /// </summary>
+        /// <param name="buffer">结果缓冲区</param>
+        /// <returns>写入的个数</returns>
+        int GetCraftableRecipesNonGc(
+            ICraftRecipe[] buffer);
+
+        /// <summary>
+        /// 判断是否可以合成（无 GC）
+        /// </summary>
+        bool CanCraftNonGc(ICraftRecipe recipe,out ICraftRecipe missing);
+
+        /// <summary>
+        /// 执行合成（不会分配新对象）
+        /// </summary>
+        bool TryCraftNonGc(ICraftRecipe recipe);
+        
+        /// <summary>
+        /// 获取合成环境
+        /// </summary>
+        /// <param name="buffer"></param>
+        /// <returns></returns>
+        int QueryCraftEnvironments(ICraftEnvironment[] buffer);
+    }
+
+}