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
  45 FGAIBase *FGAIBase::_self = NULL;
  46
  47 FGAIBase::FGAIBase() {
  48     _self = this;
  49 }
  50
  51 FGAIBase::~FGAIBase() {
  52     _self = NULL;
  53 }
  54
  55 void FGAIBase::update(double dt) {
  56 }
  57
  58
  59 void FGAIBase::Transform() {
  60     aip.setPosition(pos.lon(), pos.lat(), pos.elev() * SG_METER_TO_FEET);
  61     aip.setOrientation(roll, pitch, hdg);
  62     aip.update( globals->get_scenery()->get_center() );
  63 }
  64
  65
  66 bool FGAIBase::init() {
  67
  68    props = globals->get_props()->getNode("ai/model", true);
  69
  70    ssgBranch *model = sgLoad3DModel( globals->get_fg_root(),
  71                                      model_path.c_str(),
  72                                      props,
  73                                      globals->get_sim_time_sec() );
  74    if (model) {
  75      aip.init( model );
  76      aip.setVisible(true);
  77      globals->get_scenery()->get_scene_graph()->addKid(aip.getSceneGraph());
  78    } else {
  79      SG_LOG(SG_INPUT, SG_WARN, "AIBase: Could not load aircraft model.");
  80    }
  81
  82    tgt_roll = tgt_pitch = tgt_yaw = tgt_vs = vs = roll = pitch = 0.0;
  83    setDie(false);
  84 }
  85
  86 void FGAIBase::bind() {
  87    props->tie("velocities/airspeed-kt",  SGRawValuePointer<double>(&speed));
  88    props->tie("velocities/vertical-speed-fps", SGRawValuePointer<double>(&vs));
  89
  90    props->tie("position/altitude-ft", SGRawValuePointer<double>(&altitude));
  91    props->tie("position/latitude-deg",
  92                SGRawValueFunctions<double>(FGAIBase::_getLatitude,
  93                                            FGAIBase::_setLatitude));
  94    props->tie("position/longitude-deg",
  95                SGRawValueFunctions<double>(FGAIBase::_getLongitude,
  96                                            FGAIBase::_setLongitude));
  97
  98    props->tie("orientation/pitch-deg", SGRawValuePointer<double>(&pitch));
  99    props->tie("orientation/roll-deg", SGRawValuePointer<double>(&roll));
 100    props->tie("orientation/heading-deg", SGRawValuePointer<double>(&hdg));
 101 }
 102
 103 void FGAIBase::unbind() {
 104     props->untie("velocities/airspeed-kt");
 105     props->untie("velocities/vertical-speed-fps");
 106
 107     props->untie("position/altitude-ft");
 108     props->untie("position/latitude-deg");
 109     props->untie("position/longitude-deg");
 110
 111     props->untie("orientation/pitch-deg");
 112     props->untie("orientation/roll-deg");
 113     props->untie("orientation/heading-deg");
 114 }
 115
 116
 117 void FGAIBase::_setLongitude( double longitude ) {
 118     _self->pos.setlon(longitude);
 119 }
 120
 121 void FGAIBase::_setLatitude ( double latitude )  {
 122     _self->pos.setlat(latitude);
 123 }
 124
 125 double FGAIBase::_getLongitude() { return _self->pos.lon(); }
 126
 127 double FGAIBase::_getLatitude () { return _self->pos.lat(); }