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>
26 #include <simgear/props/condition.hxx>
28 using namespace FGXMLAutopilot;
30 Component::Component() :
38 Component::~Component()
43 bool Component::configure( SGPropertyNode_ptr configNode )
45 for (int i = 0; i < configNode->nChildren(); ++i ) {
46 SGPropertyNode_ptr prop;
48 SGPropertyNode_ptr child = configNode->getChild(i);
49 std::string cname(child->getName());
51 if( configure( cname, child ) )
54 } // for configNode->nChildren()
59 bool Component::configure( const std::string & nodeName, SGPropertyNode_ptr configNode )
61 SG_LOG( SG_AUTOPILOT, SG_BULK, "Component::configure(" << nodeName << ")" << std::endl );
63 if ( nodeName == "name" ) {
64 _name = configNode->getStringValue();
68 if ( nodeName == "debug" ) {
69 _debug = configNode->getBoolValue();
73 if ( nodeName == "enable" ) {
74 SGPropertyNode_ptr prop;
76 if( (prop = configNode->getChild("condition")) != NULL ) {
77 _condition = sgReadCondition(fgGetNode("/"), prop);
80 if ( (prop = configNode->getChild( "property" )) != NULL ) {
81 _enable_prop = fgGetNode( prop->getStringValue(), true );
84 if ( (prop = configNode->getChild( "prop" )) != NULL ) {
85 _enable_prop = fgGetNode( prop->getStringValue(), true );
88 if ( (prop = configNode->getChild( "value" )) != NULL ) {
90 _enable_value = new std::string(prop->getStringValue());
93 if ( (prop = configNode->getChild( "honor-passive" )) != NULL ) {
94 _honor_passive = prop->getBoolValue();
100 SG_LOG( SG_AUTOPILOT, SG_BULK, "Component::configure(" << nodeName << ") [unhandled]" << std::endl );
104 bool Component::isPropertyEnabled()
107 return _condition->test();
110 if( _enable_value ) {
111 return *_enable_value == _enable_prop->getStringValue();
113 return _enable_prop->getBoolValue();
119 void Component::update( double dt )
121 bool firstTime = false;
122 if( isPropertyEnabled() ) {
123 firstTime = !_enabled;
129 if( _enabled ) update( firstTime, dt );