1 // newauto.hxx -- autopilot defines and prototypes (very alpha)
3 // Started April 1998 Copyright (C) 1998
5 // Contributions by Jeff Goeke-Smith <jgoeke@voyager.net>
6 // Norman Vine <nhv@cape.com>
7 // Curtis Olson <curt@flightgear.org>
9 // This program is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU General Public License as
11 // published by the Free Software Foundation; either version 2 of the
12 // License, or (at your option) any later version.
14 // This program is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 // General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software
21 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
30 #include <simgear/misc/props.hxx>
31 #include <simgear/route/waypoint.hxx>
33 #include <Main/fgfs.hxx>
34 #include <Main/fg_props.hxx>
37 class FGAutopilot : public FGSubsystem
42 enum fgAutoHeadingMode {
43 FG_DG_HEADING_LOCK = 0, // follow bug on directional gryo (vacuum)
44 FG_TC_HEADING_LOCK = 1, // keep turn coordinator zero'd
45 FG_TRUE_HEADING_LOCK = 2, // lock to true heading (i.e. a perfect world)
46 FG_HEADING_NAV1 = 3, // follow nav1 radial
47 FG_HEADING_NAV2 = 4, // follow nav2 radial
48 FG_HEADING_WAYPOINT = 5 // track next waypoint
51 enum fgAutoAltitudeMode {
52 FG_ALTITUDE_LOCK = 0, // lock to a specific altitude (indicated)
53 FG_ALTITUDE_TERRAIN = 1, // try to maintain a specific AGL
54 FG_ALTITUDE_GS1 = 2, // follow glide slope 1
55 FG_ALTITUDE_GS2 = 3, // follow glide slope 2
56 FG_ALTITUDE_ARM = 4, // ascend to selected altitude
57 FG_TRUE_ALTITUDE_LOCK = 5 // lock to a specific true altitude
58 // (i.e. a perfect world)
64 bool heading_hold; // the current state of the heading hold
65 bool altitude_hold; // the current state of the altitude hold
66 bool auto_throttle; // the current state of the auto throttle
68 fgAutoHeadingMode heading_mode;
69 fgAutoAltitudeMode altitude_mode;
71 SGWayPoint waypoint; // the waypoint the AP should steer to.
73 // double TargetLatitude; // the latitude the AP should steer to.
74 // double TargetLongitude; // the longitude the AP should steer to.
75 double TargetDistance; // the distance to Target.
76 double DGTargetHeading; // the apparent DG heading to steer towards.
77 double TargetHeading; // the true heading the AP should steer to.
78 double TargetAltitude; // altitude to hold
79 double TargetAGL; // the terrain separation
81 double TargetSpeed; // speed to shoot for
82 double alt_error_accum; // altitude error accumulator
83 double climb_error_accum; // climb error accumulator (for GS)
84 double speed_error_accum; // speed error accumulator
86 double TargetSlope; // the glide slope hold value
88 double MaxRoll ; // the max the plane can roll for the turn
89 double RollOut; // when the plane should roll out
90 // measured from Heading
91 double MaxAileron; // how far to move the aleroin from center
92 double RollOutSmooth; // deg to use for smoothing Aileron Control
93 double MaxElevator; // the maximum elevator allowed
94 double SlopeSmooth; // smoothing angle for elevator
96 // following for testing disengagement of autopilot upon pilot
97 // interaction with controls
100 double old_elevator_trim;
103 // manual controls override beyond this value
104 double disengage_threshold;
106 // For future cross track error adjust
110 // keeping these locally to save work inside main loop
111 char TargetLatitudeStr[64];
112 char TargetLongitudeStr[64];
113 char TargetLatLonStr[64];
114 char TargetWP1Str[64];
115 char TargetWP2Str[64];
116 char TargetWP3Str[64];
117 char TargetHeadingStr[64];
118 char TargetAltitudeStr[64];
121 SGPropertyNode *latitude_node;
122 SGPropertyNode *longitude_node;
123 SGPropertyNode *altitude_node;
124 SGPropertyNode *altitude_agl_node;
125 SGPropertyNode *vertical_speed_node;
126 SGPropertyNode *heading_node;
127 SGPropertyNode *dg_heading_node;
128 SGPropertyNode *roll_node;
129 SGPropertyNode *pitch_node;
131 SGPropertyNode *min_climb; // minimum climb speed
132 SGPropertyNode *best_climb; // best climb speed
133 SGPropertyNode *elevator_adj_factor; // factor to optimize altitude hold adjustments
134 SGPropertyNode *integral_contrib; // amount of contribution of the integral
135 // component of the pid
136 SGPropertyNode *zero_pitch_throttle; // amount of throttle at which the aircraft does not pitch up
137 SGPropertyNode *zero_pitch_trim_full_throttle; // amount of trim required to level at full throttle
138 SGPropertyNode *max_aileron_node; // maximum aileron setting range -1 ~ 1
139 SGPropertyNode *max_roll_node; // maximum roll setting in degrees
140 SGPropertyNode *roll_out_node; // start rollout offset from desired heading in degrees
141 SGPropertyNode *roll_out_smooth_node; // rollout smoothing offset in degrees
143 SGPropertyNode *TargetClimbRate; // target climb rate
144 SGPropertyNode *TargetDescentRate; // target decent rate
145 SGPropertyNode *current_throttle; // current throttle (engine 0)
156 ////////////////////////////////////////////////////////////////////
157 // Implementation of FGSubsystem.
158 ////////////////////////////////////////////////////////////////////
163 void update (double dt);
165 // Reset the autopilot system
168 void AltitudeSet( double new_altitude );
169 void AltitudeAdjust( double inc );
170 void HeadingAdjust( double inc );
171 void AutoThrottleAdjust( double inc );
173 void HeadingSet( double value );
175 inline bool get_HeadingEnabled() const { return heading_hold; }
176 inline void set_HeadingEnabled( bool value ) { heading_hold = value; }
177 inline fgAutoHeadingMode get_HeadingMode() const { return heading_mode; }
178 void set_HeadingMode( fgAutoHeadingMode mode );
180 inline bool get_AltitudeEnabled() const { return altitude_hold; }
181 inline void set_AltitudeEnabled( bool value ) { altitude_hold = value; }
182 inline fgAutoAltitudeMode get_AltitudeMode() const { return altitude_mode;}
183 void set_AltitudeMode( fgAutoAltitudeMode mode );
185 inline bool get_AutoThrottleEnabled() const { return auto_throttle; }
186 void set_AutoThrottleEnabled( bool value );
188 /* inline void set_WayPoint( const double lon, const double lat,
189 const double alt, const string s ) {
190 waypoint = SGWayPoint( lon, lat, alt, SGWayPoint::WGS84, "Current WP" );
192 inline double get_TargetLatitude() const {
193 return waypoint.get_target_lat();
195 inline double get_TargetLongitude() const {
196 return waypoint.get_target_lon();
198 inline void set_old_lat( double val ) { old_lat = val; }
199 inline void set_old_lon( double val ) { old_lon = val; }
200 inline double get_TargetHeading() const { return TargetHeading; }
201 inline void set_TargetHeading( double val ) { TargetHeading = val; }
202 inline double get_DGTargetHeading() const { return DGTargetHeading; }
203 inline void set_DGTargetHeading( double val ) { DGTargetHeading = val; }
204 inline double get_TargetDistance() const { return TargetDistance; }
205 inline void set_TargetDistance( double val ) { TargetDistance = val; }
206 inline double get_TargetAltitude() const { return TargetAltitude; }
207 inline void set_TargetAltitude( double val ) { TargetAltitude = val; }
208 inline double get_TargetAGL() const { return TargetAGL; }
209 inline void set_TargetAGL( double val ) { TargetAGL = val; }
210 inline double get_TargetClimbRate() const {
211 return TargetClimbRate->getFloatValue();
213 inline void set_TargetClimbRate( double val ) {
214 fgSetFloat( "/autopilot/config/target-climb-rate-fpm", val);
217 inline char *get_TargetLatitudeStr() { return TargetLatitudeStr; }
218 inline char *get_TargetLongitudeStr() { return TargetLongitudeStr; }
219 inline char *get_TargetWP1Str() { return TargetWP1Str; }
220 inline char *get_TargetWP2Str() { return TargetWP2Str; }
221 inline char *get_TargetWP3Str() { return TargetWP3Str; }
222 inline char *get_TargetHeadingStr() { return TargetHeadingStr; }
223 inline char *get_TargetAltitudeStr() { return TargetAltitudeStr; }
224 inline char *get_TargetLatLonStr() { return TargetLatLonStr; }
227 void MakeTargetLatLonStr( double lat, double lon );
228 void MakeTargetAltitudeStr( double altitude );
229 void MakeTargetHeadingStr( double bearing );
230 void MakeTargetWPStr( double distance );
231 void update_old_control_values();
234 inline double get_MaxRoll() {
235 return fgGetFloat( "/autopilot/config/max-roll-deg" );
237 inline double get_RollOut() {
238 return fgGetFloat( "/autopilot/config/roll-out-deg" );
240 inline double get_MaxAileron() {
241 return fgGetFloat( "/autopilot/config/max-aileron" );
243 inline double get_RollOutSmooth() {
244 return fgGetFloat( "/autopilot/config/roll-out-smooth-deg" );
246 inline void set_MaxRoll( double val ) {
247 fgSetFloat( "/autopilot/config/max-roll-deg", val );
249 inline void set_RollOut( double val ) {
250 fgSetFloat( "/autopilot/config/roll-out-deg", val );
252 inline void set_MaxAileron( double val ) {
253 fgSetFloat( "/autopilot/config/max-aileron", val );
255 inline void set_RollOutSmooth( double val ) {
256 fgSetFloat( "/autopilot/config/roll-out-smooth-deg", val );
261 bool getAPAltitudeLock () const;
262 void setAPAltitudeLock (bool lock);
263 double getAPAltitude () const;
264 void setAPAltitude (double altitude);
265 bool getAPGSLock () const;
266 void setAPGSLock (bool lock);
267 bool getAPTerrainLock () const;
268 void setAPTerrainLock (bool lock);
269 double getAPClimb () const;
270 void setAPClimb (double rate);
271 bool getAPHeadingLock () const;
272 void setAPHeadingLock (bool lock);
273 double getAPHeadingBug () const;
274 void setAPHeadingBug (double heading);
275 bool getAPWingLeveler () const;
276 void setAPWingLeveler (bool lock);
277 bool getAPNAV1Lock () const;
278 void setAPNAV1Lock (bool lock);
279 bool getAPAutoThrottleLock () const;
280 void setAPAutoThrottleLock (bool lock);
281 double getAPRudderControl () const;
282 void setAPRudderControl (double value);
283 double getAPElevatorControl () const;
284 void setAPElevatorControl (double value);
285 double getAPThrottleControl () const;
286 void setAPThrottleControl (double value);
291 #define DEFAULT_AP_HEADING_LOCK FGAutopilot::FG_DG_HEADING_LOCK
292 #define DEFAULT_AP_ALTITUDE_LOCK FGAutopilot::FG_ALTITUDE_LOCK
293 //#define DEFAULT_AP_HEADING_LOCK FGAutopilot::FG_TRUE_HEADING_LOCK
294 //#define DEFAULT_AP_ALTITUDE_LOCK FGAutopilot::FG_TRUE_ALTITUDE_LOCK
297 * static functions for autopilot properties
300 #endif // _NEWAUTO_HXX