1 // FGAIBallistic.hxx - AIBase derived class creates an AI ballistic object
3 // Written by David Culp, started November 2003.
4 // - davidculp2@comcast.net
6 // With major additions by Vivian Meazza, Feb 2008
8 // This program is free software; you can redistribute it and/or
9 // modify it under the terms of the GNU General Public License as
10 // published by the Free Software Foundation; either version 2 of the
11 // License, or (at your option) any later version.
13 // This program is distributed in the hope that it will be useful, but
14 // WITHOUT ANY WARRANTY; without even the implied warranty of
15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 // General Public License for more details.
18 // You should have received a copy of the GNU General Public License
19 // along with this program; if not, write to the Free Software
20 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
22 #ifndef _FG_AIBALLISTIC_HXX
23 #define _FG_AIBALLISTIC_HXX
27 #include <simgear/structure/SGSharedPtr.hxx>
28 #include <simgear/scene/material/mat.hxx>
31 #include "AIManager.hxx"
37 class FGAIBallistic : public FGAIBase {
41 FGAIBallistic(object_type ot = otBallistic);
44 void readFromScenario(SGPropertyNode* scFileNode);
46 bool init(bool search_in_AI_path=false);
48 virtual void unbind();
50 void update(double dt);
52 FGAIBallistic *ballistic;
56 void setAzimuth( double az );
57 void setElevation( double el );
58 void setRoll( double rl );
59 void setStabilisation( bool val );
60 void setDragArea( double a );
61 void setLife( double seconds );
62 void setBuoyancy( double fpss );
63 void setWind_from_east( double fps );
64 void setWind_from_north( double fps );
65 void setWind( bool val );
66 void setCd( double c );
67 void setMass( double m );
68 void setWeight( double w );
69 void setNoRoll( bool nr );
70 void setRandom( bool r );
71 void setName(const string&);
72 void setCollision(bool c);
73 void setImpact(bool i);
74 void setImpactReportNode(const string&);
75 void setContentsNode(const string&);
76 void setFuseRange(double f);
77 void setSMPath(const string&);
79 void setSubmodel(const string&);
80 void setExternalForce( bool f );
81 void setForcePath(const string&);
82 void setForceStabilisation( bool val );
83 void setGroundOffset(double g);
84 void setLoadOffset(double l);
85 void setSlaved(bool s);
86 void setSlavedLoad(bool s);
88 void setPch (double e, double dt, double c);
89 void setHdg (double az, double dt, double c);
90 void setBnk(double r, double dt, double c);
91 void setHt(double h, double dt, double c);
92 void setHitchVelocity(double dt);
93 void setFormate(bool f);
95 double _getTime() const;
96 double getRelBrgHitchToUser() const;
97 double getElevHitchToUser() const;
98 double getLoadOffset() const;
101 SGVec3d getCartHitchPos() const;
104 bool getSlaved() const;
105 bool getSlavedLoad() const;
107 virtual const char* getTypeString(void) const { return "ballistic"; }
108 static const double slugs_to_kgs; //conversion factor
109 static const double slugs_to_lbs; //conversion factor
111 SGPropertyNode_ptr _force_node;
112 SGPropertyNode_ptr _force_azimuth_node;
113 SGPropertyNode_ptr _force_elevation_node;
118 double _ht_agl_ft; // height above ground level
119 double _azimuth; // degrees true
120 double _elevation; // degrees
121 double _rotation; // degrees
125 void setTgtXOffset(double x);
126 void setTgtYOffset(double y);
127 void setTgtZOffset(double z);
128 void setTgtOffsets(double dt, double c);
130 double getTgtXOffset() const;
131 double getTgtYOffset() const;
132 double getTgtZOffset() const;
134 double _tgt_x_offset;
135 double _tgt_y_offset;
136 double _tgt_z_offset;
137 double _elapsed_time;
141 virtual void reinit() { init(); }
143 bool _aero_stabilised; // if true, object will align with trajectory
144 double _drag_area; // equivalent drag area in ft2
145 double _life_timer; // seconds
146 double _gravity; // fps^2
147 double _buoyancy; // fps^2
148 double _wind_from_east; // fps
149 double _wind_from_north; // fps
150 bool _wind; // if true, local wind will be applied to object
151 double _Cd; // drag coefficient
152 double _mass; // slugs
153 bool _random; // modifier for Cd
154 double _load_resistance; // ground load resistanc N/m^2
155 double _frictionFactor; // dimensionless modifier for Coefficient of Friction
156 bool _solid; // if true ground is solid for FDMs
157 double _elevation_m; // ground elevation in meters
158 bool _force_stabilised;// if true, object will align to external force
159 bool _slave_to_ac; // if true, object will be slaved to the parent ac pos and orientation
160 bool _slave_load_to_ac;// if true, object will be slaved to the parent ac pos
161 double _contents_lb; // contents of the object
162 double _weight_lb; // weight of the object (no contents if appropriate) (lbs)
164 bool _report_collision; // if true a collision point with AI Objects is calculated
165 bool _report_impact; // if true an impact point on the terrain is calculated
166 bool _external_force; // if true then apply external force
168 SGPropertyNode_ptr _impact_report_node; // report node for impact and collision
169 SGPropertyNode_ptr _contents_node; // report node for impact and collision
181 const SGMaterial* _material;
183 void handle_collision();
184 void handle_impact();
185 void report_impact(double elevation, const FGAIBase *target = 0);
186 void slaveToAC(double dt);
187 void setContents(double c);
188 void formateToAC(double dt);
190 SGVec3d getCartUserPos() const;
192 double getDistanceLoadToHitch() const;
193 double getElevLoadToHitch() const;
194 double getBearingLoadToHitch() const;
195 double getRecip(double az);
196 double getMass() const;
199 double _ground_offset;
204 SGVec3d _oldcarthitchPos;
210 #endif // _FG_AIBALLISTIC_HXX