src/AIModel/AIBase.cxx

   1 // FGAIBase - 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
   5 //
   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.
  10 //
  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.
  15 //
  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.
  19
  20
  21 #ifdef HAVE_CONFIG_H
  22 #  include <config.h>
  23 #endif
  24
  25 #include <simgear/compiler.h>
  26
  27 #include STL_STRING
  28
  29 #include <plib/sg.h>
  30 #include <plib/ssg.h>
  31
  32 #include <simgear/math/point3d.hxx>
  33 #include <simgear/misc/sg_path.hxx>
  34 #include <simgear/scene/model/location.hxx>
  35 #include <simgear/scene/model/model.hxx>
  36 #include <simgear/debug/logstream.hxx>
  37 #include <simgear/props/props.hxx>
  38
  39 #include <Main/globals.hxx>
  40 #include <Scenery/scenery.hxx>
  41
  42
  43 #include "AIBase.hxx"
  44 #include "AIManager.hxx"
  45
  46 FGAIBase::FGAIBase() {
  47     _type_str = "model";
  48     tgt_roll = roll = tgt_pitch = tgt_yaw = tgt_vs = vs = pitch = 0.0;
  49     bearing = elevation = range = rdot = 0.0;
  50     x_shift = y_shift = rotation = 0.0;
  51     invisible = true;
  52     no_roll = true;
  53     model_path = "";
  54     model = 0;
  55     _otype = otNull;
  56     index = 0;
  57 }
  58
  59 FGAIBase::~FGAIBase() {
  60     globals->get_scenery()->get_scene_graph()->removeKid(aip.getSceneGraph());
  61     // unbind();
  62     SGPropertyNode *root = globals->get_props()->getNode("ai/models", true);
  63     root->removeChild(_type_str.c_str(), index);
  64     if (fp) delete fp;
  65 }
  66
  67 void FGAIBase::update(double dt) {
  68 }
  69
  70
  71 void FGAIBase::Transform() {
  72     if (!invisible) {
  73       aip.setPosition(pos.lon(), pos.lat(), pos.elev() * SG_METER_TO_FEET);
  74       if (no_roll) {
  75          aip.setOrientation(0.0, pitch, hdg);
  76       } else {
  77          aip.setOrientation(roll, pitch, hdg);
  78       }
  79       aip.update( globals->get_scenery()->get_center() );
  80     }
  81 }
  82
  83
  84 bool FGAIBase::init() {
  85
  86    SGPropertyNode *root = globals->get_props()->getNode("ai/models", true);
  87    index = manager->getNum(_otype) - 1;
  88    props = root->getNode(_type_str.c_str(), index, true);
  89    if (model_path != "") {
  90       model = sgLoad3DModel( globals->get_fg_root(),
  91                              model_path.c_str(),
  92                              props,
  93                              globals->get_sim_time_sec() );
  94    }
  95    if (model) {
  96      aip.init( model );
  97      aip.setVisible(true);
  98      invisible = false;
  99      globals->get_scenery()->get_scene_graph()->addKid(aip.getSceneGraph());
 100    } else {
 101      if (model_path != "") {
 102        SG_LOG(SG_INPUT, SG_WARN, "AIBase: Could not load model.");
 103      }
 104    }
 105
 106    setDie(false);
 107
 108    return true;
 109 }
 110
 111 bool FGAIBase::isa( object_type otype ) {
 112  if ( otype == _otype ) { return true; }
 113  else { return false; }
 114 }
 115
 116
 117 void FGAIBase::bind() {
 118    props->tie("id", SGRawValuePointer<int>(&id));
 119    props->tie("velocities/true-airspeed-kt",  SGRawValuePointer<double>(&speed));
 120    props->tie("velocities/vertical-speed-fps",
 121                SGRawValueMethods<FGAIBase,double>(*this,
 122                                          &FGAIBase::_getVS_fps,
 123                                          &FGAIBase::_setVS_fps));
 124
 125    props->tie("position/altitude-ft",
 126                SGRawValueMethods<FGAIBase,double>(*this,
 127                                          &FGAIBase::_getAltitude,
 128                                          &FGAIBase::_setAltitude));
 129    props->tie("position/latitude-deg",
 130                SGRawValueMethods<FGAIBase,double>(*this,
 131                                          &FGAIBase::_getLatitude,
 132                                          &FGAIBase::_setLatitude));
 133    props->tie("position/longitude-deg",
 134                SGRawValueMethods<FGAIBase,double>(*this,
 135                                          &FGAIBase::_getLongitude,
 136                                          &FGAIBase::_setLongitude));
 137
 138    props->tie("orientation/pitch-deg",   SGRawValuePointer<double>(&pitch));
 139    props->tie("orientation/roll-deg",    SGRawValuePointer<double>(&roll));
 140    props->tie("orientation/true-heading-deg", SGRawValuePointer<double>(&hdg));
 141
 142    props->tie("radar/bearing-deg",   SGRawValuePointer<double>(&bearing));
 143    props->tie("radar/elevation-deg", SGRawValuePointer<double>(&elevation));
 144    props->tie("radar/range-nm", SGRawValuePointer<double>(&range));
 145    props->tie("radar/h-offset", SGRawValuePointer<double>(&horiz_offset));
 146    props->tie("radar/v-offset", SGRawValuePointer<double>(&vert_offset));
 147    props->tie("radar/x-shift", SGRawValuePointer<double>(&x_shift));
 148    props->tie("radar/y-shift", SGRawValuePointer<double>(&y_shift));
 149    props->tie("radar/rotation", SGRawValuePointer<double>(&rotation));
 150
 151    props->tie("controls/lighting/nav-lights",
 152                SGRawValueFunctions<bool>(_isNight));
 153    props->setBoolValue("controls/lighting/beacon", true);
 154    props->setBoolValue("controls/lighting/strobe", true);
 155 }
 156
 157 void FGAIBase::unbind() {
 158     props->untie("id");
 159     props->untie("velocities/true-airspeed-kt");
 160     props->untie("velocities/vertical-speed-fps");
 161
 162     props->untie("position/altitude-ft");
 163     props->untie("position/latitude-deg");
 164     props->untie("position/longitude-deg");
 165
 166     props->untie("orientation/pitch-deg");
 167     props->untie("orientation/roll-deg");
 168     props->untie("orientation/true-heading-deg");
 169
 170     props->untie("radar/bearing-deg");
 171     props->untie("radar/elevation-deg");
 172     props->untie("radar/range-nm");
 173     props->untie("radar/h-offset");
 174     props->untie("radar/v-offset");
 175     props->untie("radar/x-shift");
 176     props->untie("radar/y-shift");
 177     props->untie("radar/rotation");
 178
 179     props->untie("controls/lighting/nav-lights");
 180 }
 181
 182
 183 /*
 184  * getters and Setters
 185  */
 186 void FGAIBase::_setLongitude( double longitude ) {
 187     pos.setlon(longitude);
 188 }
 189 void FGAIBase::_setLatitude ( double latitude )  {
 190     pos.setlat(latitude);
 191 }
 192
 193 double FGAIBase::_getLongitude() const {
 194     return pos.lon();
 195 }
 196 double FGAIBase::_getLatitude () const {
 197     return pos.lat();
 198 }
 199 double FGAIBase::_getRdot() const {
 200     return rdot;
 201 }
 202 double FGAIBase::_getVS_fps() const {
 203     return vs*60.0;
 204 }
 205 void FGAIBase::_setVS_fps( double _vs ) {
 206     vs = _vs/60.0;
 207 }
 208
 209 double FGAIBase::_getAltitude() const {
 210     return altitude;
 211 }
 212 void FGAIBase::_setAltitude( double _alt ) {
 213     setAltitude( _alt );
 214 }
 215
 216 bool FGAIBase::_isNight() {
 217     return (fgGetFloat("/sim/time/sun-angle-rad") > 1.57);
 218 }
 219