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"
34 class FGAIBallistic : public FGAIBase {
38 FGAIBallistic(object_type ot = otBallistic);
41 void readFromScenario(SGPropertyNode* scFileNode);
43 bool init(bool search_in_AI_path=false);
45 virtual void reinit();
46 virtual void update(double dt);
48 virtual const char* getTypeString(void) const { return "ballistic"; }
52 void setAzimuth( double az );
53 void setElevation( double el );
54 void setRoll( double rl );
55 void setStabilisation( bool val );
56 void setDragArea( double a );
57 void setLife( double seconds );
58 void setBuoyancy( double fpss );
59 void setWind_from_east( double fps );
60 void setWind_from_north( double fps );
61 void setWind( bool val );
62 void setCd(double cd);
63 void setCdRandomness(double randomness);
64 void setMass( double m );
65 void setWeight( double w );
66 void setNoRoll( bool nr );
67 void setRandom( bool r );
68 void setLifeRandomness(double randomness);
69 void setCollision(bool c);
70 void setExpiry(bool e);
71 void setImpact(bool i);
72 void setImpactReportNode(const std::string&);
73 void setContentsNode(const SGPropertyNode_ptr);
74 void setFuseRange(double f);
75 void setSMPath(const std::string&);
77 void setSubmodel(const std::string&);
78 void setExternalForce( bool f );
79 void setForcePath(const std::string&);
80 void setContentsPath(const std::string&);
81 void setForceStabilisation( bool val );
82 void setGroundOffset(double g);
83 void setLoadOffset(double l);
84 void setSlaved(bool s);
85 void setSlavedLoad(bool s);
86 void setPch (double e, double dt, double c);
87 int setHdg (double az, double dt, double c);
88 void setBnk(double r, double dt, double c);
89 void setHt(double h, double dt, double c);
90 void setSpd(double s, double dt, double c);
91 void setParentNodes(const SGPropertyNode_ptr);
93 void setOffsetPos(SGGeod pos, double heading, double pitch, double roll);
94 void setOffsetVelocity(double dt, SGGeod pos);
95 void setTime(double sec);
97 double _getTime()const;
98 double getRelBrgHitchToUser() const;
99 double getElevHitchToUser() const;
100 double getLoadOffset() const;
101 double getContents();
102 double getDistanceToHitch() const;
103 double getElevToHitch() const;
104 double getBearingToHitch() const;
106 SGVec3d getCartHitchPos() const;
108 bool getHtAGL(double start);
109 bool getSlaved() const;
110 bool getSlavedLoad() const;
112 FGAIBallistic *ballistic;
114 static const double slugs_to_kgs; //conversion factor
115 static const double slugs_to_lbs; //conversion factor
117 SGPropertyNode_ptr _force_node;
118 SGPropertyNode_ptr _force_azimuth_node;
119 SGPropertyNode_ptr _force_elevation_node;
121 // Node for parent model
122 SGPropertyNode_ptr _pnode;
124 // Nodes for parent parameters
125 SGPropertyNode_ptr _p_pos_node;
126 SGPropertyNode_ptr _p_lat_node;
127 SGPropertyNode_ptr _p_lon_node;
128 SGPropertyNode_ptr _p_alt_node;
129 SGPropertyNode_ptr _p_agl_node;
130 SGPropertyNode_ptr _p_ori_node;
131 SGPropertyNode_ptr _p_pch_node;
132 SGPropertyNode_ptr _p_rll_node;
133 SGPropertyNode_ptr _p_hdg_node;
134 SGPropertyNode_ptr _p_vel_node;
135 SGPropertyNode_ptr _p_spd_node;
139 double _ht_agl_ft; // height above ground level
140 double _azimuth; // degrees true
141 double _elevation; // degrees
142 double _rotation; // degrees
143 double _speed_north_fps;
144 double _speed_east_fps;
145 double _wind_from_east; // fps
146 double _wind_from_north; // fps
151 void setTgtXOffset(double x);
152 void setTgtYOffset(double y);
153 void setTgtZOffset(double z);
154 void setTgtOffsets(double dt, double c);
156 double getTgtXOffset() const;
157 double getTgtYOffset() const;
158 double getTgtZOffset() const;
160 double _tgt_x_offset;
161 double _tgt_y_offset;
162 double _tgt_z_offset;
163 double _elapsed_time;
168 SGGeod _oldoffsetpos;
172 bool _aero_stabilised; // if true, object will align with trajectory
173 double _drag_area; // equivalent drag area in ft2
174 double _buoyancy; // fps^2
175 bool _wind; // if true, local wind will be applied to object
176 double _cd; // drag coefficient
177 double _cd_randomness; // randomness of Cd. 1.0 means +- 100%, 0.0 means no randomness
178 double _life_timer; // seconds
179 double _mass; // slugs
180 bool _random; // modifier for Cd, life, az
181 double _life_randomness; // dimension for _random, only applies to life at present
182 double _load_resistance; // ground load resistanc N/m^2
183 double _frictionFactor; // dimensionless modifier for Coefficient of Friction
184 bool _solid; // if true ground is solid for FDMs
185 double _elevation_m; // ground elevation in meters
186 bool _force_stabilised;// if true, object will align to external force
187 bool _slave_to_ac; // if true, object will be slaved to the parent ac pos and orientation
188 bool _slave_load_to_ac;// if true, object will be slaved to the parent ac pos
189 double _contents_lb; // contents of the object
190 double _weight_lb; // weight of the object (no contents if appropriate) (lbs)
191 std::string _mat_name;
193 bool _report_collision; // if true a collision point with AI Objects is calculated
194 bool _report_impact; // if true an impact point on the terrain is calculated
195 bool _external_force; // if true then apply external force
198 SGPropertyNode_ptr _impact_report_node; // report node for impact and collision
199 SGPropertyNode_ptr _contents_node; // node for droptank etc. contents
203 std::string _submodel;
204 std::string _force_path;
205 std::string _contents_path;
207 void handleEndOfLife(double);
208 void handle_collision();
209 void handle_expiry();
210 void handle_impact();
211 void report_impact(double elevation, const FGAIBase *target = 0);
212 void slaveToAC(double dt);
213 void setContents(double c);
217 SGVec3d getCartOffsetPos(SGGeod pos, double heading, double pitch, double roll) const;
219 double getRecip(double az);
220 double getMass() const;
222 double _ground_offset;
225 SGVec3d _oldcartoffsetPos;
229 #endif // _FG_AIBALLISTIC_HXX