// ATCdisplay.hxx - class to manage the graphical display of ATC messages. // - The idea is to separate the display of ATC messages from their // - generation so that the generation may come from any source. // // Written by David Luff, started October 2001. // // Copyright (C) 2001 David C Luff - david.luff@nottingham.ac.uk // // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU General Public License as // published by the Free Software Foundation; either version 2 of the // License, or (at your option) any later version. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // General Public License for more details. // // You should have received a copy of the GNU General Public License // along with this program; if not, write to the Free Software // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. #ifndef _FG_ATC_DISPLAY_HXX #define _FG_ATC_DISPLAY_HXX #ifdef HAVE_CONFIG_H # include #endif #include #include #include SG_USING_STD(vector); SG_USING_STD(string); struct atcMessage { string msg; bool repeating; double counter; // count of how many seconds since the message was registered double start_count; // value of counter at which display should start (seconds) double stop_count; // value of counter at which display should stop (seconds) int id; double dsp_offset; }; // ASSUMPTION - with two radios the list won't be long so we don't need to map the id's typedef vector atcMessageList; typedef atcMessageList::iterator atcMessageListIterator; class FGATCDisplay : public SGSubsystem { private: bool rep_msg; // Flag to indicate there is a repeating transmission to display bool change_msg_flag; // Flag to indicate that the repeating message has changed double dsp_offset1; // Used to set the correct position of scrolling display double dsp_offset2; string rep_msg_str; // The repeating transmission to play atcMessageList msgList; atcMessageListIterator msgList_itr; public: FGATCDisplay(); ~FGATCDisplay(); void init(); void bind(); void unbind(); // Display any registered messages void update(double dt); // Register a single message for display after a delay of delay seconds // Will automatically stop displaying after a suitable interval. void RegisterSingleMessage(string msg, double delay = 0.0); // OK - I know passing a string in and out is probably not good but it will have to do for now. // For now we will assume only one repeating message at once // This is not really robust // Register a continuously repeating message void RegisterRepeatingMessage(string msg); // Change a repeating message - assume that the message changes after the string has finished for now void ChangeRepeatingMessage(string newmsg); // Cancel the current repeating message void CancelRepeatingMessage(); }; #endif // _FG_ATC_DISPLAY_HXX