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     _type_str = "model";
  50 }
  51
  52 FGAIBase::~FGAIBase() {
  53     _self = NULL;
  54 }
  55
  56 void FGAIBase::update(double dt) {
  57 }
  58
  59
  60 void FGAIBase::Transform() {
  61     aip.setPosition(pos.lon(), pos.lat(), pos.elev() * SG_METER_TO_FEET);
  62     aip.setOrientation(roll, pitch, hdg);
  63     aip.update( globals->get_scenery()->get_center() );
  64 }
  65
  66
  67 bool FGAIBase::init() {
  68
  69    SGPropertyNode *root = globals->get_props()->getNode("ai/models", true);
  70    vector<SGPropertyNode_ptr> p_vec = root->getChildren(_type_str);
  71    unsigned num = p_vec.size();
  72    p_vec.clear();
  73
  74    props = root->getNode(_type_str, num, true);
  75    ssgBranch *model = sgLoad3DModel( globals->get_fg_root(),
  76                                      model_path.c_str(),
  77                                      props,
  78                                      globals->get_sim_time_sec() );
  79    if (model) {
  80      aip.init( model );
  81      aip.setVisible(true);
  82      globals->get_scenery()->get_scene_graph()->addKid(aip.getSceneGraph());
  83    } else {
  84      SG_LOG(SG_INPUT, SG_WARN, "AIBase: Could not load aircraft model.");
  85    }
  86
  87    tgt_roll = tgt_pitch = tgt_yaw = tgt_vs = vs = roll = pitch = 0.0;
  88    setDie(false);
  89 }
  90
  91 void FGAIBase::bind() {
  92    props->tie("velocities/airspeed-kt",  SGRawValuePointer<double>(&speed));
  93    props->tie("velocities/vertical-speed-fps", SGRawValuePointer<double>(&vs));
  94
  95    props->tie("position/altitude-ft", SGRawValuePointer<double>(&altitude));
  96    props->tie("position/latitude-deg",
  97                SGRawValueFunctions<double>(FGAIBase::_getLatitude,
  98                                            FGAIBase::_setLatitude));
  99    props->tie("position/longitude-deg",
 100                SGRawValueFunctions<double>(FGAIBase::_getLongitude,
 101                                            FGAIBase::_setLongitude));
 102
 103    props->tie("orientation/pitch-deg", SGRawValuePointer<double>(&pitch));
 104    props->tie("orientation/roll-deg", SGRawValuePointer<double>(&roll));
 105    props->tie("orientation/heading-deg", SGRawValuePointer<double>(&hdg));
 106 }
 107
 108 void FGAIBase::unbind() {
 109     props->untie("velocities/airspeed-kt");
 110     props->untie("velocities/vertical-speed-fps");
 111
 112     props->untie("position/altitude-ft");
 113     props->untie("position/latitude-deg");
 114     props->untie("position/longitude-deg");
 115
 116     props->untie("orientation/pitch-deg");
 117     props->untie("orientation/roll-deg");
 118     props->untie("orientation/heading-deg");
 119 }
 120
 121
 122 void FGAIBase::_setLongitude( double longitude ) {
 123     _self->pos.setlon(longitude);
 124 }
 125
 126 void FGAIBase::_setLatitude ( double latitude )  {
 127     _self->pos.setlat(latitude);
 128 }
 129
 130 double FGAIBase::_getLongitude() { return _self->pos.lon(); }
 131
 132 double FGAIBase::_getLatitude () { return _self->pos.lat(); }