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1 // FGAIAircraft - AIBase derived class creates an AI aircraft
2 //
3 // Written by David Culp, started October 2003.
4 //
5 // Copyright (C) 2003  David P. Culp - davidculp2@comcast.net
6 //
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.
11 //
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.
16 //
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.
20
21 #ifndef _FG_AIAircraft_HXX
22 #define _FG_AIAircraft_HXX
23
24 #include "AIManager.hxx"
25 #include "AIBase.hxx"
26 #include "AIFlightPlan.hxx"
27
28 #include <string>
29 SG_USING_STD(string);
30
31
32 class FGAIAircraft : public FGAIBase {
33
34 private:
35
36         typedef struct {
37             double accel;
38             double decel;
39             double climb_rate;
40             double descent_rate;
41             double takeoff_speed;
42             double climb_speed;
43             double cruise_speed;
44             double descent_speed;
45             double land_speed;
46         } PERF_STRUCT;
47         
48 public:
49
50         enum aircraft_e {LIGHT=0, WW2_FIGHTER, JET_TRANSPORT, JET_FIGHTER};
51         static const PERF_STRUCT settings[];
52         
53         FGAIAircraft(FGAIManager* mgr);
54         ~FGAIAircraft();
55         
56         bool init();
57         virtual void bind();
58         virtual void unbind();
59         void update(double dt);
60
61         void SetPerformance(const PERF_STRUCT *ps);
62         void SetFlightPlan(FGAIFlightPlan *f);
63         void AccelTo(double speed);
64         void PitchTo(double angle);
65         void RollTo(double angle);
66         void YawTo(double angle);
67         void ClimbTo(double altitude);
68         void TurnTo(double heading);
69         void ProcessFlightPlan( double dt );
70         //double getHeading(double lat1, double lon1, double lat2, double lon2);
71
72 protected:
73         static FGAIAircraft *_self;
74         
75 private:
76
77         bool hdg_lock;
78         bool alt_lock;
79         FGAIFlightPlan *fp;
80         double dt_count;  
81         double dt; 
82
83         const PERF_STRUCT *performance;
84         bool use_perf_vs;
85
86         void Run(double dt);
87         double sign(double x);  
88
89         static bool _getGearDown();
90 };
91
92 inline bool FGAIAircraft::_getGearDown() {
93     return (!_self) ? false
94                     : ((fgGetFloat("/position/altitude-agl-ft") < 150.0)
95                        && (fgGetFloat("/velocities/airspeed-kt")
96                            < _self->performance->land_speed*1.5));
97 }
98
99
100 #endif  // _FG_AIAircraft_HXX