134 lines
3.5 KiB
C++
134 lines
3.5 KiB
C++
// digitalcomponent.hxx - Base class for digital autopilot components
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//
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// Written by Torsten Dreyer
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// Based heavily on work created by Curtis Olson, started January 2004.
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//
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// Copyright (C) 2004 Curtis L. Olson - http://www.flightgear.org/~curt
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// Copyright (C) 2010 Torsten Dreyer - Torsten (at) t3r (dot) de
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License as
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// published by the Free Software Foundation; either version 2 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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//
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#ifndef __DIGITALCOMPONENT_HXX
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#define __DIGITALCOMPONENT_HXX 1
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#include "component.hxx"
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#include <simgear/props/props.hxx>
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#include <simgear/props/condition.hxx>
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namespace FGXMLAutopilot {
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/**
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* @brief Models a digital output bound to a property. May be an inverted output.
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*/
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class DigitalOutput : public SGReferenced {
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private:
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bool _inverted;
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SGPropertyNode_ptr _node;
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protected:
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public:
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/**
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* @brief Constructs an empty, noninverting output
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*/
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DigitalOutput();
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inline void setProperty( SGPropertyNode_ptr node );
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inline void setInverted( bool value ) { _inverted = value; }
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inline bool isInverted() const { return _inverted; }
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bool getValue() const;
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void setValue( bool value );
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};
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inline DigitalOutput::DigitalOutput() : _inverted(false)
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{
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}
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inline void DigitalOutput::setProperty( SGPropertyNode_ptr node )
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{
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_node = node;
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_node->setBoolValue( node->getBoolValue() );
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}
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inline bool DigitalOutput::getValue() const
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{
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if( _node == NULL ) return false;
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bool nodeState = _node->getBoolValue();
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return _inverted ? !nodeState : nodeState;
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}
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inline void DigitalOutput::setValue( bool value )
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{
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if( _node == NULL ) return;
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_node->setBoolValue( _inverted ? !value : value );
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}
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typedef SGSharedPtr<DigitalOutput> DigitalOutput_ptr;
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/**
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* @brief Base class for digital autopilot components
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*
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* Each digital component has (at least)
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* <ul>
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* <li>one value input</li>
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* <li>any number of output properties</li>
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* </ul>
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*/
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class DigitalComponent : public Component {
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public:
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DigitalComponent();
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class InputMap : public std::map<const std::string,SGSharedPtr<const SGCondition> > {
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public:
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bool get_value( const std::string & name ) const;
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};
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// typedef std::map<const std::string,SGSharedPtr<const SGCondition> > InputMap;
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typedef std::map<const std::string,DigitalOutput_ptr> OutputMap;
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protected:
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/**
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* @brief Named input "pins"
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*/
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InputMap _input;
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/**
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* @brief Named output "pins"
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*/
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OutputMap _output;
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/**
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* @brief Global "inverted" flag for the outputs
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*/
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bool _inverted;
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/**
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* @brief Over-rideable hook method to allow derived classes to refine top-level
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* node parsing.
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* @param aName
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* @param aNode
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* @return true if the node was handled, false otherwise.
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*/
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virtual bool configure( const std::string & nodeName, SGPropertyNode_ptr configNode );
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};
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}
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#endif // DIGITALCOMPONENT_HXX
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