fix

room.coffee

@@ -45,7 +45,7 @@ class Room
   
   @find_or_create_random: (type, player_name)->
     result = _.find @all, (room)->
-      (type == '' or room.random_type == type) and room.get_playing_player().length == 1 and room.get_playing_player()[0].name != Room.players_oppentlist[player_name]
+      room.random_type != '' and (type == '' or room.random_type == type) and room.get_playing_player().length == 1 and room.get_playing_player()[0].name != Room.players_oppentlist[player_name]
     if result
       result.welcome = '对手已经在等你了，开始决斗吧！'
       #log.info 'found room', player_name

room.js

@@ -58,7 +58,7 @@
     Room.find_or_create_random = function(type, player_name) {
       var name, result;
       result = _.find(this.all, function(room) {
-        return (type === '' || room.random_type === type) && room.get_playing_player().length === 1 && room.get_playing_player()[0].name !== Room.players_oppentlist[player_name];
+        return room.random_type !== '' && (type === '' || room.random_type === type) && room.get_playing_player().length === 1 && room.get_playing_player()[0].name !== Room.players_oppentlist[player_name];
       });
       if (result) {
         result.welcome = '对手已经在等你了，开始决斗吧！';