[Enhance] API for redeem

- Add API endpoints for redeem system
- Continue to fix the bug mentioned in 930faf508d

latest version/linkplay_server/udp_class.py

@@ -1,3 +1,5 @@
+from time import time
+
 from .config import Config
 
 
@@ -79,8 +81,27 @@ class Room:
 
     @property
     def player_num(self) -> int:
+        self.check_player_online()
         return sum(i.player_id != 0 for i in self.players)
 
+    def check_player_online(self, now: int = None):
+        # 检测玩家是否被自动踢出房间 / 离线判断
+        now = round(time() * 1000000) if now is None else now
+        flag = False
+        player_index_list = []
+        for i, x in enumerate(self.players):
+            if x.player_id == 0 or x.last_timestamp == 0:
+                continue
+            if now - x.last_timestamp >= Config.PLAYER_TIMEOUT:
+                self.delete_player(i)
+                flag = True
+                player_index_list.append(i)
+            elif x.online == 1 and now - x.last_timestamp >= Config.PLAYER_PRE_TIMEOUT:
+                x.online = 0
+                player_index_list.append(i)
+
+        return flag, player_index_list
+
     def get_players_info(self):
         # 获取所有玩家信息
         re = b''