修复炼金系统中的错误

Plugins/WPSAlchemyGame.py

@@ -401,18 +401,24 @@ class WPSAlchemyGame(WPSAPI):
         material_ids = [item.item_id for item in resolved]
 
         backpack: WPSBackpackSystem = Architecture.Get(WPSBackpackSystem)
-        for item in resolved:
-            owned = self._get_user_quantity(user_id, item.item_id)
-            if owned < times:
+        material_usage = Counter(item.item_id for item in resolved)
+        name_map = {item.item_id: item.name for item in resolved}
+        current_quantities: Dict[str, int] = {}
+        for item_id, single_batch_count in material_usage.items():
+            required_amount = single_batch_count * times
+            current = self._get_user_quantity(user_id, item_id)
+            current_quantities[item_id] = current
+            if current < required_amount:
+                item_name = name_map.get(item_id, item_id)
                 return (
-                    f"❌ 材料 `{item.name}` 数量不足，需要 {times} 个，当前仅有 {owned} 个"
+                    f"❌ 材料 `{item_name}` 数量不足，需要 {required_amount} 个，当前仅有 {current} 个"
                 )
 
         # 扣除材料
-        for item in resolved:
-            current = self._get_user_quantity(user_id, item.item_id)
+        for item_id, single_batch_count in material_usage.items():
+            required_amount = single_batch_count * times
             backpack.set_item_quantity(
-                user_id, item.item_id, current - times
+                user_id, item_id, current_quantities[item_id] - required_amount
             )
 
         # 创建炼金记录