1 // FGAIPlane - abstract base class for an AI plane
3 // Written by David Luff, started 2002.
5 // Copyright (C) 2002 David C. Luff - david.luff@nottingham.ac.uk
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 /*****************************************************************
23 * WARNING - Curt has some ideas about AI traffic so anything in here
24 * may get rewritten or scrapped. Contact Curt curt@flightgear.org
25 * before spending any time or effort on this code!!!
27 ******************************************************************/
29 #ifndef _FG_AI_PLANE_HXX
30 #define _FG_AI_PLANE_HXX
32 #include <Model/model.hxx>
35 #include <simgear/math/point3d.hxx>
37 #include "AIEntity.hxx"
40 /*****************************************************************
42 * FGAIPlane - this class is derived from FGAIEntity and adds the
43 * practical requirement for an AI plane - the ability to send radio
44 * communication, and simple performance details for the actual AI
45 * implementation to use. The AI implementation is expected to be
46 * in derived classes - this class does nothing useful on its own.
48 ******************************************************************/
49 class FGAIPlane : public FGAIEntity {
55 // Run the internal calculations
56 virtual void Update(double dt);
60 double mag_hdg; // degrees - the heading that the physical aircraft is *pointing*
61 double track; // track that the physical aircraft is *following* - degrees relative to *true* north
62 double crab; // Difference between heading and track due to wind.
63 double mag_var; // degrees
64 double IAS; // Indicated airspeed in knots
65 double vel; // velocity along track in knots
66 double vel_si; // velocity along track in m/s
67 double slope; // Actual slope that the plane is flying (degrees) - +ve is uphill
68 double AoA; // degrees - difference between slope and pitch
69 // We'll assume that the plane doesn't yaw or slip - the track/heading difference is to allow for wind
71 double freq; // The comm frequency that we're operating on
73 // We need some way for this class to display its radio transmissions if on the
74 // same frequency and in the vicinity of the user's aircraft
75 // This may need to be done independently of ATC eg CTAF
76 // Make radio transmission - this simply sends the transmission for physical rendering if the users
77 // aircraft is on the same frequency and in range. It is up to the derived classes to let ATC know
79 void Transmit(string msg);
81 void Bank(double angle);
82 void LevelWings(void);
86 #endif // _FG_AI_PLANE_HXX