Ready to update to v2.5

Please wait for some time. I need to change readme. I almost forgot what I changed before.
WARNING: There will be many bugs!

latest version/server/item.py

@@ -0,0 +1,106 @@
+from setting import Config
+
+
+def get_user_items(c, user_id, item_type):
+    # 得到用户的物品，返回列表，不包含数量信息
+
+    if item_type == 'world_song' and Config.WORLD_SONG_FULL_UNLOCK or item_type == 'world_unlock' and Config.WORLD_SCENERY_FULL_UNLOCK:
+        c.execute('''select item_id from item where type=?''', (item_type,))
+    else:
+        c.execute('''select item_id from user_item where user_id = :user_id and type = :item_type''',
+                  {'user_id': user_id, 'item_type': item_type})
+    x = c.fetchall()
+    if not x:
+        return []
+
+    re = []
+    for i in x:
+        re.append(i[0])
+    return re
+
+
+def get_user_cores(c, user_id):
+    # 得到用户的core，返回字典列表
+    r = []
+    c.execute(
+        '''select item_id, amount from user_item where user_id = ? and type="core"''', (user_id,))
+    x = c.fetchall()
+    if x:
+        for i in x:
+            if i[1]:
+                amount = i[1]
+            else:
+                amount = 0
+            r.append({'core_type': i[0], 'amount': amount})
+
+    return r
+
+
+def claim_user_item(c, user_id, item_id, item_type, amount=1):
+    # 处理用户物品，包括添加和删除操作，返回成功与否布尔值
+    # 这个接口允许memory变成负数，所以不能用来购买
+
+    try:
+        amount = int(amount)
+    except:
+        return False
+
+    if item_type not in ['memory', 'character']:
+        c.execute('''select is_available from item where item_id=? and type=?''',
+                  (item_id, item_type))
+        x = c.fetchone()
+        if x:
+            if x[0] == 0:
+                return False
+        else:
+            return False
+
+    if item_type == 'core':
+        c.execute(
+            '''select amount from user_item where user_id=? and item_id=? and type="core"''', (user_id, item_id))
+        x = c.fetchone()
+        if x:
+            if x[0] + amount < 0:  # 数量不足
+                return False
+            c.execute('''update user_item set amount=? where user_id=? and item_id=? and type="core"''',
+                      (x[0]+amount, user_id, item_id))
+        else:
+            if amount < 0:  # 添加数量错误
+                return False
+            c.execute('''insert into user_item values(?,?,"core",?)''',
+                      (user_id, item_id, amount))
+
+    elif item_type == 'memory':
+        c.execute('''select ticket from user where user_id=?''', (user_id,))
+        x = c.fetchone()
+        if x is not None:
+            c.execute('''update user set ticket=? where user_id=?''',
+                      (x[0]+amount, user_id))
+        else:
+            return False
+
+    elif item_type == 'character':
+        if not item_id.isdigit():
+            c.execute(
+                '''select character_id from character where name=?''', (item_id,))
+            x = c.fetchone()
+            if x:
+                character_id = x[0]
+            else:
+                return False
+        else:
+            character_id = int(item_id)
+        c.execute(
+            '''select exists(select * from user_char where user_id=? and character_id=?)''', (user_id, character_id))
+        if c.fetchone() == (0,):
+            c.execute('''insert into user_char values(?,?,1,0,0,0)''',
+                      (user_id, character_id))
+
+    elif item_type in ['world_song', 'world_unlock', 'single', 'pack']:
+        c.execute('''select exists(select * from user_item where user_id=? and item_id=? and type=?)''',
+                  (user_id, item_id, item_type))
+        if c.fetchone() == (0,):
+            c.execute('''insert into user_item values(:a,:b,:c,1)''',
+                      {'a': user_id, 'b': item_id, 'c': item_type})
+
+    return True