1 // FGAIBase.hxx - abstract base class for AI objects
2 // Written by David Culp, started Nov 2003, based on
3 // David Luff's FGAIEntity class.
4 // - davidculp2@comcast.net
6 // This program is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU General Public License as
8 // published by the Free Software Foundation; either version 2 of the
9 // License, or (at your option) any later version.
11 // This program is distributed in the hope that it will be useful, but
12 // WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // General Public License for more details.
16 // You should have received a copy of the GNU General Public License
17 // along with this program; if not, write to the Free Software
18 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 #ifndef _FG_AIBASE_HXX
21 #define _FG_AIBASE_HXX
26 #include <simgear/constants.h>
27 #include <simgear/math/point3d.hxx>
28 #include <simgear/scene/model/placement.hxx>
29 #include <simgear/misc/sg_path.hxx>
30 #include <simgear/structure/ssgSharedPtr.hxx>
32 #include <Main/fg_props.hxx>
42 ParkPosition(const ParkPosition& pp)
43 : name(pp.name), offset(pp.offset), heading_deg(pp.heading_deg)
45 ParkPosition(const string& n, const Point3D& off = Point3D(), double heading = 0)
46 : name(n), offset(off), heading_deg(heading)
56 // can be aircraft, ship, storm, thermal, static or ballistic
64 double repeat; // in seconds
65 double latitude; // used if no flightplan defined
66 double longitude; // used if no flightplan defined
67 double altitude; // used if no flightplan defined
68 double speed; // used if no flightplan defined
69 double heading; // used if no flightplan defined
70 double roll; // used if no flightplan defined
71 double azimuth; // used by ballistic objects
72 double elevation; // used by ballistic objects
73 double rudder; // used by ship objects
74 double strength; // used by thermal
75 double turb_strength; // used by storm objects
76 double diameter; // used by thermal and storm objects
77 double height_msl; // used by thermal and storm objects
78 double eda; // used by ballistic objects
79 double life; // life span in seconds
80 double buoyancy; // acceleration in ft per sec2
81 double wind_from_east; // in feet per second
82 double wind_from_north; // in feet per second
83 double cd; // coefficient of drag
84 bool wind; // if true, model reacts to parent wind
85 double mass; // in slugs
86 bool aero_stabilised; // if true, ballistic object aligns with trajectory
87 list<string> solid_objects; // List of solid object names
88 list<string> wire_objects; // List of wire object names
89 list<string> catapult_objects; // List of catapult object names
90 list<ParkPosition> ppositions; // List of positions on a carrier where an aircraft can start.
91 Point3D flols_offset; // used by carrier objects, in meters
92 double radius; // used by ship objects, in feet
93 string name; // used by carrier objects
94 string pennant_number; // used by carrier objects
95 string acType; // used by aircraft objects
96 string company; // used by aircraft objects
97 string TACAN_channel_ID; // used by carrier objects
98 double max_lat; // used by carrier objects
99 double min_lat; // used by carrier objects
100 double max_long; // used by carrier objects
101 double min_long; // used by carrier objects
112 virtual void update(double dt);
113 inline const Point3D& GetPos() const { return(pos); }
115 enum object_type { otNull = 0, otAircraft, otShip, otCarrier, otBallistic,
116 otRocket, otStorm, otThermal, otStatic, otMultiplayer,
117 MAX_OBJECTS }; // Needs to be last!!!
121 virtual void unbind();
123 void setPath( const char* model );
124 void setSpeed( double speed_KTAS );
125 void setAltitude( double altitude_ft );
126 void setHeading( double heading );
127 void setLatitude( double latitude );
128 void setLongitude( double longitude );
129 void setBank( double bank );
130 void setPitch( double newpitch );
131 void setRadius ( double radius );
132 void setXoffset( double x_offset );
133 void setYoffset( double y_offset );
134 void setZoffset( double z_offset );
138 void setDie( bool die );
141 Point3D getCartPosAt(const Point3D& off) const;
142 Point3D getGeocPosAt(const Point3D& off) const;
146 SGPropertyNode_ptr props;
147 FGAIManager* manager;
149 // these describe the model's actual state
150 Point3D pos; // WGS84 lat & lon in degrees, elev above sea-level in meters
151 double hdg; // True heading in degrees
152 double roll; // degrees, left is negative
153 double pitch; // degrees, nose-down is negative
154 double speed; // knots true airspeed
155 double altitude; // meters above sea level
156 double vs; // vertical speed, feet per minute
157 double turn_radius_ft; // turn radius ft at 15 kts rudder angle 15 degrees
159 double ft_per_deg_lon;
160 double ft_per_deg_lat;
162 // these describe the model's desired state
163 double tgt_heading; // target heading, degrees true
164 double tgt_altitude; // target altitude, *feet* above sea level
165 double tgt_speed; // target speed, KTAS
171 // these describe radar information for the user
172 bool in_range; // true if in range of the radar, otherwise false
173 double bearing; // true bearing from user to this model
174 double elevation; // elevation in degrees from user to this model
175 double range; // range from user to this model, nm
176 double rdot; // range rate, in knots
177 double horiz_offset; // look left/right from user to me, deg
178 double vert_offset; // look up/down from user to me, deg
179 double x_shift; // value used by radar display instrument
180 double y_shift; // value used by radar display instrument
181 double rotation; // value used by radar display instrument
184 string model_path; //Path to the 3D model
185 ssgSharedPtr<ssgBranch> model; //The 3D model object
186 SGModelPlacement aip;
194 void CalculateMach();
195 double UpdateRadar(FGAIManager* manager);
201 static int _newAIModelID();
208 object_type getType();
209 bool isa( object_type otype );
211 double _getVS_fps() const;
212 void _setVS_fps( double _vs );
214 double _getAltitude() const;
215 void _setAltitude( double _alt );
217 void _setLongitude( double longitude );
218 void _setLatitude ( double latitude );
220 double _getLongitude() const;
221 double _getLatitude () const;
223 double _getBearing() const;
224 double _getElevation() const;
225 double _getRdot() const;
226 double _getH_offset() const;
227 double _getV_offset() const;
228 double _getX_shift() const;
229 double _getY_shift() const;
230 double _getRotation() const;
233 double T; // temperature, degs farenheit
234 double p; // pressure lbs/sq ft
235 double a; // speed of sound at altitude (ft/s)
236 double Mach; // Mach number
238 static const double e;
239 static const double lbs_to_slugs;
241 inline double _getRange() { return range; };
242 ssgBranch * load3DModel(const string& fg_root,
244 SGPropertyNode *prop_root,
245 double sim_time_sec);
247 static bool _isNight();
251 inline void FGAIBase::setPath( const char* model ) {
252 model_path.append(model);
255 inline void FGAIBase::setSpeed( double speed_KTAS ) {
256 speed = tgt_speed = speed_KTAS;
259 inline void FGAIBase::setRadius( double radius ) {
260 turn_radius_ft = radius;
263 inline void FGAIBase::setHeading( double heading ) {
264 hdg = tgt_heading = heading;
267 inline void FGAIBase::setAltitude( double altitude_ft ) {
268 altitude = tgt_altitude = altitude_ft;
269 pos.setelev(altitude * SG_FEET_TO_METER);
272 inline void FGAIBase::setBank( double bank ) {
273 roll = tgt_roll = bank;
277 inline void FGAIBase::setPitch( double newpitch ) {
278 pitch = tgt_pitch = newpitch;
281 inline void FGAIBase::setLongitude( double longitude ) {
282 pos.setlon( longitude );
284 inline void FGAIBase::setLatitude ( double latitude ) {
285 pos.setlat( latitude );
288 inline void FGAIBase::setDie( bool die ) { delete_me = die; }
289 inline bool FGAIBase::getDie() { return delete_me; }
291 inline FGAIBase::object_type FGAIBase::getType() { return _otype; }
295 #endif // _FG_AIBASE_HXX