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::_self = NULL;
  47
  48 FGAIBase::FGAIBase() {
  49     _self = this;
  50     _type_str = "model";
  51     tgt_roll = roll = tgt_pitch = tgt_yaw = tgt_vs = vs = pitch = 0.0;
  52     bearing = elevation = range = rdot = 0.0;
  53     x_shift = y_shift = rotation = 0.0;
  54     invisible = true;
  55     no_roll = true;
  56     model_path = "";
  57     model = 0;
  58     _otype = otNull;
  59     index = 0;
  60 }
  61
  62 FGAIBase::~FGAIBase() {
  63     globals->get_scenery()->get_scene_graph()->removeKid(aip.getSceneGraph());
  64     unbind();
  65     SGPropertyNode *root = globals->get_props()->getNode("ai/models", true);
  66     root->removeChild(_type_str.c_str(), index);
  67     _self = NULL;
  68 }
  69
  70 void FGAIBase::update(double dt) {
  71 }
  72
  73
  74 void FGAIBase::Transform() {
  75     if (!invisible) {
  76       aip.setPosition(pos.lon(), pos.lat(), pos.elev() * SG_METER_TO_FEET);
  77       if (no_roll) {
  78          aip.setOrientation(0.0, pitch, hdg);
  79       } else {
  80          aip.setOrientation(roll, pitch, hdg);
  81       }
  82       aip.update( globals->get_scenery()->get_center() );
  83     }
  84 }
  85
  86
  87 bool FGAIBase::init() {
  88
  89    SGPropertyNode *root = globals->get_props()->getNode("ai/models", true);
  90    index = manager->getNum(_otype) - 1;
  91    props = root->getNode(_type_str.c_str(), index, true);
  92    if (model_path != "") {
  93       model = sgLoad3DModel( globals->get_fg_root(),
  94                              model_path.c_str(),
  95                              props,
  96                              globals->get_sim_time_sec() );
  97    }
  98    if (model) {
  99      aip.init( model );
 100      aip.setVisible(true);
 101      invisible = false;
 102      globals->get_scenery()->get_scene_graph()->addKid(aip.getSceneGraph());
 103    } else {
 104      if (model_path != "") {
 105        SG_LOG(SG_INPUT, SG_WARN, "AIBase: Could not load model.");
 106      }
 107    }
 108
 109    setDie(false);
 110
 111    return true;
 112 }
 113
 114 bool FGAIBase::isa( object_type otype ) {
 115  if ( otype == _otype ) { return true; }
 116  else { return false; }
 117 }
 118
 119
 120 void FGAIBase::bind() {
 121    props->tie("id", SGRawValuePointer<int>(&id));
 122    props->tie("velocities/true-airspeed-kt",  SGRawValuePointer<double>(&speed));
 123    props->tie("velocities/vertical-speed-fps",
 124                SGRawValueFunctions<double>(FGAIBase::_getVS_fps,
 125                                            FGAIBase::_setVS_fps));
 126
 127    props->tie("position/altitude-ft",
 128                SGRawValueFunctions<double>(FGAIBase::_getAltitude,
 129                                            FGAIBase::_setAltitude));
 130    props->tie("position/latitude-deg",
 131                SGRawValueFunctions<double>(FGAIBase::_getLatitude,
 132                                            FGAIBase::_setLatitude));
 133    props->tie("position/longitude-deg",
 134                SGRawValueFunctions<double>(FGAIBase::_getLongitude,
 135                                            FGAIBase::_setLongitude));
 136
 137    props->tie("orientation/pitch-deg",   SGRawValuePointer<double>(&pitch));
 138    props->tie("orientation/roll-deg",    SGRawValuePointer<double>(&roll));
 139    props->tie("orientation/true-heading-deg", SGRawValuePointer<double>(&hdg));
 140
 141    props->tie("radar/bearing-deg",   SGRawValueFunctions<double>(FGAIBase::_getBearing));
 142    props->tie("radar/elevation-deg", SGRawValueFunctions<double>(FGAIBase::_getElevation));
 143    props->tie("radar/range-nm",      SGRawValueFunctions<double>(FGAIBase::_getRange));
 144    props->tie("radar/h-offset", SGRawValueFunctions<double>(FGAIBase::_getH_offset));
 145    props->tie("radar/v-offset", SGRawValueFunctions<double>(FGAIBase::_getV_offset));
 146    props->tie("radar/x-shift", SGRawValueFunctions<double>(FGAIBase::_getX_shift));
 147    props->tie("radar/y-shift", SGRawValueFunctions<double>(FGAIBase::_getY_shift));
 148    props->tie("radar/rotation", SGRawValueFunctions<double>(FGAIBase::_getRotation));
 149
 150    props->tie("controls/lighting/nav-lights",
 151                SGRawValueFunctions<bool>(FGAIBase::_isNight));
 152    props->setBoolValue("controls/lighting/beacon", true);
 153    props->setBoolValue("controls/lighting/strobe", true);
 154 }
 155
 156 void FGAIBase::unbind() {
 157     props->untie("id");
 158     props->untie("velocities/true-airspeed-kt");
 159     props->untie("velocities/vertical-speed-fps");
 160
 161     props->untie("position/altitude-ft");
 162     props->untie("position/latitude-deg");
 163     props->untie("position/longitude-deg");
 164
 165     props->untie("orientation/pitch-deg");
 166     props->untie("orientation/roll-deg");
 167     props->untie("orientation/true-heading-deg");
 168
 169     props->untie("radar/bearing-deg");
 170     props->untie("radar/elevation-deg");
 171     props->untie("radar/range-nm");
 172     props->untie("radar/h-offset");
 173     props->untie("radar/v-offset");
 174     props->untie("radar/x-shift");
 175     props->untie("radar/y-shift");
 176     props->untie("radar/rotation");
 177
 178     props->untie("controls/lighting/nav-lights");
 179 }
 180