public void prev(int step = 1) { int id = current / 3; if (id >= step) { id -= step; } else { id = 0; } NetMgr net = NetMgr.GetInstance(); PomeloClient pc = net.pc; pc.flush(); RoomMgr rm = RoomMgr.GetInstance(); rm.prepareReplay(mRoom, mBaseInfo); mCount = mBaseInfo.mahjongs.Count; gotoAction(id); }