1 // component.cxx - Base class for autopilot components
3 // Written by Torsten Dreyer
4 // Based heavily on work created by Curtis Olson, started January 2004.
6 // Copyright (C) 2004 Curtis L. Olson - http://www.flightgear.org/~curt
7 // Copyright (C) 2010 Torsten Dreyer - Torsten (at) t3r (dot) de
9 // This program is free software; you can redistribute it and/or
10 // modify it under the terms of the GNU General Public License as
11 // published by the Free Software Foundation; either version 2 of the
12 // License, or (at your option) any later version.
14 // This program is distributed in the hope that it will be useful, but
15 // WITHOUT ANY WARRANTY; without even the implied warranty of
16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 // General Public License for more details.
19 // You should have received a copy of the GNU General Public License
20 // along with this program; if not, write to the Free Software
21 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
23 #include "component.hxx"
24 #include <Main/fg_props.hxx>
25 #include <simgear/structure/exception.hxx>
27 using namespace FGXMLAutopilot;
29 Component::Component() :
37 Component::~Component()
42 bool Component::configure( SGPropertyNode_ptr configNode )
44 for (int i = 0; i < configNode->nChildren(); ++i ) {
45 SGPropertyNode_ptr prop;
47 SGPropertyNode_ptr child = configNode->getChild(i);
48 string cname(child->getName());
50 if( configure( cname, child ) )
53 } // for configNode->nChildren()
58 bool Component::configure( const std::string & nodeName, SGPropertyNode_ptr configNode )
60 SG_LOG( SG_AUTOPILOT, SG_BULK, "Component::configure(" << nodeName << ")" << endl );
62 if ( nodeName == "name" ) {
63 _name = configNode->getStringValue();
67 if ( nodeName == "debug" ) {
68 _debug = configNode->getBoolValue();
72 if ( nodeName == "enable" ) {
73 SGPropertyNode_ptr prop;
75 if( (prop = configNode->getChild("condition")) != NULL ) {
76 _condition = sgReadCondition(fgGetNode("/"), prop);
79 if ( (prop = configNode->getChild( "property" )) != NULL ) {
80 _enable_prop = fgGetNode( prop->getStringValue(), true );
83 if ( (prop = configNode->getChild( "prop" )) != NULL ) {
84 _enable_prop = fgGetNode( prop->getStringValue(), true );
87 if ( (prop = configNode->getChild( "value" )) != NULL ) {
89 _enable_value = new string(prop->getStringValue());
92 if ( (prop = configNode->getChild( "honor-passive" )) != NULL ) {
93 _honor_passive = prop->getBoolValue();
99 SG_LOG( SG_AUTOPILOT, SG_BULK, "Component::configure(" << nodeName << ") [unhandled]" << endl );
103 bool Component::isPropertyEnabled()
106 return _condition->test();
109 if( _enable_value ) {
110 return *_enable_value == _enable_prop->getStringValue();
112 return _enable_prop->getBoolValue();
118 void Component::update( double dt )
120 bool firstTime = false;
121 if( isPropertyEnabled() ) {
122 firstTime = !_enabled;
128 if( _enabled ) update( firstTime, dt );