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     tgt_roll = roll = tgt_pitch = tgt_yaw = tgt_vs = vs = pitch = 0.0;
  51     bearing = elevation = range = rdot = 0.0;
  52     x_shift = y_shift = rotation = 0.0;
  53     invisible = true;
  54     model_path = "";
  55     _otype = otNull;
  56 }
  57
  58 FGAIBase::~FGAIBase() {
  59     globals->get_scenery()->get_scene_graph()->removeKid(aip.getSceneGraph());
  60     unbind();
  61     _self = NULL;
  62 }
  63
  64 void FGAIBase::update(double dt) {
  65 }
  66
  67
  68 void FGAIBase::Transform() {
  69     if (!invisible) {
  70       aip.setPosition(pos.lon(), pos.lat(), pos.elev() * SG_METER_TO_FEET);
  71       aip.setOrientation(roll, pitch, hdg);
  72       aip.update( globals->get_scenery()->get_center() );
  73     }
  74 }
  75
  76
  77 bool FGAIBase::init() {
  78
  79    SGPropertyNode *root = globals->get_props()->getNode("ai/models", true);
  80    vector<SGPropertyNode_ptr> p_vec = root->getChildren(_type_str);
  81    unsigned num = p_vec.size();
  82    p_vec.clear();
  83
  84    props = root->getNode(_type_str, num, true);
  85    ssgBranch *model = 0;
  86    if (model_path != "") {
  87       model = sgLoad3DModel( globals->get_fg_root(),
  88                              model_path.c_str(),
  89                              props,
  90                              globals->get_sim_time_sec() );
  91    }
  92    if (model) {
  93      aip.init( model );
  94      aip.setVisible(true);
  95      invisible = false;
  96      globals->get_scenery()->get_scene_graph()->addKid(aip.getSceneGraph());
  97    } else {
  98      if (model_path != "") {
  99        SG_LOG(SG_INPUT, SG_WARN, "AIBase: Could not load model.");
 100      }
 101    }
 102
 103    setDie(false);
 104
 105    return true;
 106 }
 107
 108 bool FGAIBase::isa( object_type otype ) {
 109  if ( otype == _otype ) { return true; }
 110  else { return false; }
 111 }
 112
 113
 114 void FGAIBase::bind() {
 115    props->tie("id", SGRawValuePointer<int>(&id));
 116    props->tie("velocities/true-airspeed-kt",  SGRawValuePointer<double>(&speed));
 117    props->tie("velocities/vertical-speed-fps",
 118                SGRawValueFunctions<double>(FGAIBase::_getVS_fps,
 119                                            FGAIBase::_setVS_fps));
 120
 121    props->tie("position/altitude-ft",
 122                SGRawValueFunctions<double>(FGAIBase::_getAltitude,
 123                                            FGAIBase::_setAltitude));
 124    props->tie("position/latitude-deg",
 125                SGRawValueFunctions<double>(FGAIBase::_getLatitude,
 126                                            FGAIBase::_setLatitude));
 127    props->tie("position/longitude-deg",
 128                SGRawValueFunctions<double>(FGAIBase::_getLongitude,
 129                                            FGAIBase::_setLongitude));
 130
 131    props->tie("orientation/pitch-deg",   SGRawValuePointer<double>(&pitch));
 132    props->tie("orientation/roll-deg",    SGRawValuePointer<double>(&roll));
 133    props->tie("orientation/true-heading-deg", SGRawValuePointer<double>(&hdg));
 134
 135    props->tie("radar/bearing-deg",   SGRawValueFunctions<double>(FGAIBase::_getBearing));
 136    props->tie("radar/elevation-deg", SGRawValueFunctions<double>(FGAIBase::_getElevation));
 137    props->tie("radar/range-nm",      SGRawValueFunctions<double>(FGAIBase::_getRange));
 138 //   props->tie("radar/rdot-kts",      SGRawValueFunctions<double>(FGAIBase::_getRdot));
 139    props->tie("radar/h-offset", SGRawValueFunctions<double>(FGAIBase::_getH_offset));
 140    props->tie("radar/v-offset", SGRawValueFunctions<double>(FGAIBase::_getV_offset));
 141    props->tie("radar/x-shift", SGRawValueFunctions<double>(FGAIBase::_getX_shift));
 142    props->tie("radar/y-shift", SGRawValueFunctions<double>(FGAIBase::_getY_shift));
 143    props->tie("radar/rotation", SGRawValueFunctions<double>(FGAIBase::_getRotation));
 144
 145    props->tie("controls/lighting/nav-lights",
 146                SGRawValueFunctions<bool>(FGAIBase::_isNight));
 147    props->setBoolValue("controls/lighting/beacon", true);
 148    props->setBoolValue("controls/lighting/strobe", true);
 149 }
 150
 151 void FGAIBase::unbind() {
 152     props->untie("id");
 153     props->untie("velocities/true-airspeed-kt");
 154     props->untie("velocities/vertical-speed-fps");
 155
 156     props->untie("position/altitude-ft");
 157     props->untie("position/latitude-deg");
 158     props->untie("position/longitude-deg");
 159
 160     props->untie("orientation/pitch-deg");
 161     props->untie("orientation/roll-deg");
 162     props->untie("orientation/true-heading-deg");
 163
 164     props->untie("radar/bearing-deg");
 165     props->untie("radar/elevation-deg");
 166     props->untie("radar/range-nm");
 167 //    props->untie("radar/rdot-kts");
 168     props->untie("radar/h-offset");
 169     props->untie("radar/v-offset");
 170     props->untie("radar/x-shift");
 171     props->untie("radar/y-shift");
 172     props->untie("radar/rotation");
 173
 174     props->untie("controls/controls/lighting/nav-lights");
 175 }
 176