收到结束游戏的消息后, 将房间设置为lock

src/rooms/commands/EndGameCommand.ts

@@ -9,5 +9,7 @@ export class EndGameCommand extends Command<PuzzleGameState, {}> {
   async execute() {
     this.state.updateGameState(GameStateConst.STATE_GAME_OVER)
     this.room.broadcast('endgame', {})
+    await this.room.setPrivate(true)
+    await this.room.lock()
   }
 }