1 // submodel.cxx - models a releasable submodel.
2 // Written by Dave Culp, started Aug 2004
4 // This file is in the Public Domain and comes with no warranty.
6 #include "submodel.hxx"
8 #include <simgear/structure/exception.hxx>
9 #include <simgear/misc/sg_path.hxx>
11 #include <Main/fg_props.hxx>
12 #include <Main/util.hxx>
13 #include <AIModel/AIManager.hxx>
16 SubmodelSystem::SubmodelSystem ()
18 x_offset = y_offset = 0.0;
24 SubmodelSystem::~SubmodelSystem ()
29 SubmodelSystem::init ()
32 _serviceable_node = fgGetNode("/sim/systems/submodels/serviceable", true);
34 _user_lat_node = fgGetNode("/position/latitude-deg", true);
35 _user_lon_node = fgGetNode("/position/longitude-deg", true);
36 _user_alt_node = fgGetNode("/position/altitude-ft", true);
38 _user_heading_node = fgGetNode("/orientation/heading-deg", true);
39 _user_pitch_node = fgGetNode("/orientation/pitch-deg", true);
40 _user_roll_node = fgGetNode("/orientation/roll-deg", true);
41 _user_yaw_node = fgGetNode("/orientation/yaw-deg", true);
43 _user_speed_node = fgGetNode("/velocities/uBody-fps", true);
45 _user_wind_from_east_node = fgGetNode("/environment/wind-from-east-fps",true);
46 _user_wind_from_north_node = fgGetNode("/environment/wind-from-north-fps",true);
48 ai = (FGAIManager*)globals->get_subsystem("ai_model");
52 SubmodelSystem::bind ()
57 SubmodelSystem::unbind ()
59 submodel_iterator = submodels.begin();
60 while(submodel_iterator != submodels.end()) {
61 (*submodel_iterator)->prop->untie("count");
67 SubmodelSystem::update (double dt)
69 if (!(_serviceable_node->getBoolValue())) return;
71 submodel_iterator = submodels.begin();
72 while(submodel_iterator != submodels.end()) {
74 if ((*submodel_iterator)->trigger->getBoolValue()) {
75 if ((*submodel_iterator)->count != 0) {
76 release( (*submodel_iterator), dt);
85 SubmodelSystem::release (submodel* sm, double dt)
88 if (sm->timer < sm->delay) return false;
91 // calculate submodel's initial conditions in world-coordinates
94 //cout << "Creating a submodel." << endl;
95 FGAIModelEntity entity;
97 entity.path = sm->model.c_str();
98 entity.latitude = IC.lat;
99 entity.longitude = IC.lon;
100 entity.altitude = IC.alt;
101 entity.azimuth = IC.azimuth;
102 entity.elevation = IC.elevation;
103 entity.speed = IC.speed;
104 entity.eda = sm->drag_area;
105 entity.life = sm->life;
106 entity.buoyancy = sm->buoyancy;
107 entity.wind_from_east = IC.wind_from_east;
108 entity.wind_from_north = IC.wind_from_north;
109 entity.wind = sm->wind;
110 int rval = ai->createBallistic( &entity );
112 //cout << "Submodel created." << endl;
113 if (sm->count > 0) (sm->count)--;
119 SubmodelSystem::load ()
122 SGPropertyNode *path = fgGetNode("/sim/systems/submodels/path");
126 SGPath config( globals->get_fg_root() );
127 config.append( path->getStringValue() );
130 readProperties(config.str(), &root);
131 } catch (const sg_exception &e) {
132 SG_LOG(SG_GENERAL, SG_ALERT,
133 "Unable to read submodels file: ");
134 cout << config.str() << endl;
139 int count = root.nChildren();
140 for (i = 0; i < count; i++) {
141 // cout << "Reading submodel " << i << endl;
142 SGPropertyNode *prop;
143 submodel* sm = new submodel;
144 SGPropertyNode * entry_node = root.getChild(i);
145 sm->trigger = fgGetNode(entry_node->getStringValue("trigger", "none"), true);
146 sm->name = entry_node->getStringValue("name", "none_defined");
147 sm->model = entry_node->getStringValue("model", "Models/Geometry/rocket.ac");
148 sm->speed = entry_node->getDoubleValue("speed", 0.0);
149 sm->repeat = entry_node->getBoolValue ("repeat", false);
150 sm->delay = entry_node->getDoubleValue("delay", 0.25);
151 sm->count = entry_node->getIntValue ("count", 1);
152 sm->slaved = entry_node->getBoolValue ("slaved", false);
153 sm->x_offset = entry_node->getDoubleValue("x-offset", 0.0);
154 sm->y_offset = entry_node->getDoubleValue("y_offset", 0.0);
155 sm->z_offset = entry_node->getDoubleValue("z-offset", 0.0);
156 sm->yaw_offset = entry_node->getDoubleValue("yaw-offset", 0.0);
157 sm->pitch_offset = entry_node->getDoubleValue("pitch-offset", 0.0);
158 sm->drag_area = entry_node->getDoubleValue("eda", 0.007);
159 sm->life = entry_node->getDoubleValue("life", 900.0);
160 sm->buoyancy = entry_node->getDoubleValue("buoyancy", 0);
161 sm->wind = entry_node->getBoolValue ("wind", false);
163 sm->trigger->setBoolValue(false);
164 sm->timer = sm->delay;
166 sm->prop = fgGetNode("/systems/submodels/submodel", i, true);
167 sm->prop->tie("count", SGRawValuePointer<int>(&(sm->count)));
169 submodels.push_back( sm );
172 submodel_iterator = submodels.begin();
173 // cout << submodels.size() << " submodels read." << endl;
178 SubmodelSystem::transform( submodel* sm)
180 IC.lat = _user_lat_node->getDoubleValue();
181 IC.lon = _user_lon_node->getDoubleValue();
182 IC.alt = _user_alt_node->getDoubleValue();
183 IC.azimuth = _user_heading_node->getDoubleValue() + sm->yaw_offset;
184 IC.elevation = _user_pitch_node->getDoubleValue() + sm->pitch_offset;
185 IC.speed = _user_speed_node->getDoubleValue() + sm->speed;
186 IC.wind_from_east = _user_wind_from_east_node->getDoubleValue();
187 IC.wind_from_north = _user_wind_from_north_node->getDoubleValue();
188 // IC.wind_from_east = 4;
189 // IC.wind_from_north = 5;
193 // end of submodel.cxx