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);
46 ai = (FGAIManager*)globals->get_subsystem("ai_model");
50 SubmodelSystem::bind ()
55 SubmodelSystem::unbind ()
57 submodel_iterator = submodels.begin();
58 while(submodel_iterator != submodels.end()) {
59 (*submodel_iterator)->prop->untie("count");
65 SubmodelSystem::update (double dt)
67 if (!(_serviceable_node->getBoolValue())) return;
69 submodel_iterator = submodels.begin();
70 while(submodel_iterator != submodels.end()) {
72 if ((*submodel_iterator)->trigger->getBoolValue()) {
73 if ((*submodel_iterator)->count != 0) {
74 release( (*submodel_iterator), dt);
83 SubmodelSystem::release (submodel* sm, double dt)
86 if (sm->timer < sm->delay) return false;
89 transform(sm); // calculate submodel's initial conditions in world-coordinates
91 //cout << "Creating a submodel." << endl;
92 int rval = ai->createBallistic( sm->model, IC.lat, IC.lon, IC.alt, IC.azimuth,
93 IC.elevation, IC.speed, sm->drag_area, sm->life,
95 //cout << "Submodel created." << endl;
96 if (sm->count > 0) (sm->count)--;
102 SubmodelSystem::load ()
105 SGPropertyNode *path = fgGetNode("/sim/systems/submodels/path");
109 SGPath config( globals->get_fg_root() );
110 config.append( path->getStringValue() );
113 readProperties(config.str(), &root);
114 } catch (const sg_exception &e) {
115 SG_LOG(SG_GENERAL, SG_ALERT,
116 "Unable to read submodels file: ");
117 cout << config.str() << endl;
122 int count = root.nChildren();
123 for (i = 0; i < count; i++) {
124 // cout << "Reading submodel " << i << endl;
125 SGPropertyNode *prop;
126 submodel* sm = new submodel;
127 SGPropertyNode * entry_node = root.getChild(i);
128 sm->trigger = fgGetNode(entry_node->getStringValue("trigger", "none"), true);
129 sm->name = entry_node->getStringValue("name", "none_defined");
130 sm->model = entry_node->getStringValue("model", "Models/Geometry/rocket.ac");
131 sm->speed = entry_node->getDoubleValue("speed", 0.0);
132 sm->repeat = entry_node->getBoolValue ("repeat", false);
133 sm->delay = entry_node->getDoubleValue("delay", 0.25);
134 sm->count = entry_node->getIntValue ("count", 1);
135 sm->slaved = entry_node->getBoolValue ("slaved", false);
136 sm->x_offset = entry_node->getDoubleValue("x-offset", 0.0);
137 sm->y_offset = entry_node->getDoubleValue("y_offset", 0.0);
138 sm->z_offset = entry_node->getDoubleValue("z-offset", 0.0);
139 sm->yaw_offset = entry_node->getDoubleValue("yaw-offset", 0.0);
140 sm->pitch_offset = entry_node->getDoubleValue("pitch-offset", 0.0);
141 sm->drag_area = entry_node->getDoubleValue("eda", 0.007);
142 sm->life = entry_node->getDoubleValue("life", 900.0);
143 sm->buoyancy = entry_node->getDoubleValue("buoyancy", 0);
145 sm->trigger->setBoolValue(false);
146 sm->timer = sm->delay;
148 sm->prop = fgGetNode("/systems/submodels/submodel", i, true);
149 sm->prop->tie("count", SGRawValuePointer<int>(&(sm->count)));
151 submodels.push_back( sm );
154 submodel_iterator = submodels.begin();
155 // cout << submodels.size() << " submodels read." << endl;
160 SubmodelSystem::transform( submodel* sm)
162 IC.lat = _user_lat_node->getDoubleValue();
163 IC.lon = _user_lon_node->getDoubleValue();
164 IC.alt = _user_alt_node->getDoubleValue();
165 IC.azimuth = _user_heading_node->getDoubleValue() + sm->yaw_offset;
166 IC.elevation = _user_pitch_node->getDoubleValue() + sm->pitch_offset;
167 IC.speed = _user_speed_node->getDoubleValue() + sm->speed;
172 // end of submodel.cxx