rename item -> material & refactor buying action

src/sim/load/avatar_load_mixin.py

@@ -41,7 +41,7 @@ class AvatarLoadMixin:
         from src.classes.age import Age
         from src.classes.hp import HP
         from src.classes.technique import techniques_by_id
-        from src.classes.item import items_by_id
+        from src.classes.material import materials_by_id
         from src.classes.weapon import weapons_by_id
         from src.classes.auxiliary import auxiliaries_by_id
         from src.classes.sect import sects_by_id
@@ -92,13 +92,13 @@ class AvatarLoadMixin:
         # 设置物品与资源
         avatar.magic_stone = MagicStone(data.get("magic_stone", 0))
         
-        # 重建items
-        items_dict = data.get("items", {})
-        avatar.items = {}
-        for item_id_str, quantity in items_dict.items():
-            item_id = int(item_id_str)
-            if item_id in items_by_id:
-                avatar.items[items_by_id[item_id]] = quantity
+        # 重建materials (兼容旧档 items)
+        materials_dict = data.get("materials") or data.get("items") or {}
+        avatar.materials = {}
+        for mat_id_str, quantity in materials_dict.items():
+            mat_id = int(mat_id_str)
+            if mat_id in materials_by_id:
+                avatar.materials[materials_by_id[mat_id]] = quantity
         
         # 重建weapon
         # 使用copy而非deepcopy，避免潜在的递归引用导致的崩溃，且性能更好

src/sim/load/load_game.py

@@ -8,7 +8,7 @@
 加载流程（两阶段）：
 1. 第一阶段：加载所有Avatar对象（relations留空）
    - 通过AvatarLoadMixin.from_save_dict反序列化
-   - 配表对象（Technique, Item等）通过id从全局字典获取
+   - 配表对象（Technique, Material等）通过id从全局字典获取
 2. 第二阶段：重建Avatar之间的relations网络
    - 必须在所有Avatar加载完成后才能建立引用关系
    
@@ -123,12 +123,7 @@ def load_game(save_path: Optional[Path] = None) -> Tuple["World", "Simulator", L
                     avatar.relations[other_avatar] = relation
         
         # 将所有avatar添加到world
-        # 根据生死状态分流
-        for avatar in all_avatars.values():
-            if avatar.is_dead:
-                world.avatar_manager.dead_avatars[avatar.id] = avatar
-            else:
-                world.avatar_manager.avatars[avatar.id] = avatar
+        world.avatar_manager.avatars = all_avatars
         
         # 恢复洞府主人关系
         cultivate_regions_hosts = world_data.get("cultivate_regions_hosts", {})

src/sim/save/avatar_save_mixin.py

@@ -4,9 +4,9 @@ Avatar存档序列化Mixin
 将Avatar的序列化逻辑从avatar.py分离出来，保持核心类的清晰性。
 
 存档策略：
-- 引用对象（Technique, Item等）：保存id，加载时从全局字典获取
+- 引用对象（Technique, Material等）：保存id，加载时从全局字典获取
 - relations：转换为dict[str, str]（avatar_id -> relation_value）
-- items：转换为dict[int, int]（item_id -> quantity）
+- materials：转换为dict[int, int]（material_id -> quantity）
 - current_action：保存动作类名和参数
 - weapon/auxiliary：需要深拷贝（因为special_data是实例特有的）
 """
@@ -30,10 +30,10 @@ class AvatarSaveMixin:
             for other, relation in self.relations.items()
         }
         
-        # 序列化items: dict[Item, int] -> dict[int, int]
-        items_dict = {
-            item.id: quantity
-            for item, quantity in self.items.items()
+        # 序列化materials: dict[Material, int] -> dict[int, int]
+        materials_dict = {
+            material.id: quantity
+            for material, quantity in self.materials.items()
         }
         
         # 序列化current_action
@@ -75,7 +75,7 @@ class AvatarSaveMixin:
             
             # 物品与资源
             "magic_stone": self.magic_stone.value,
-            "items": items_dict,
+            "materials": materials_dict,
             "weapon_id": self.weapon.id if self.weapon else None,
             "weapon_special_data": self.weapon.special_data if self.weapon else {},
             "weapon_proficiency": self.weapon_proficiency,