component.hxx

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// component.hxx - Base class for autopilot components
//
// Written by Torsten Dreyer
// Based heavily on work created by Curtis Olson, started January 2004.
//
// Copyright (C) 2004  Curtis L. Olson  - http://www.flightgear.org/~curt
// Copyright (C) 2010  Torsten Dreyer - Torsten (at) t3r (dot) de
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
// published by the Free Software Foundation; either version 2 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
//
#pragma once
 
#include <simgear/structure/subsystem_mgr.hxx>
#include <simgear/props/propsfwd.hxx>
 
namespace FGXMLAutopilot {

class Component : public SGSubsystem
{
private:
    SGSharedPtr<const SGCondition> _condition;
    SGPropertyNode_ptr _enable_prop;
    std::string * _enable_value;
    bool _enabled;
 
protected:
    virtual bool configure( SGPropertyNode& cfg_node,
                            const std::string& cfg_name,
                            SGPropertyNode& prop_root );

    virtual void update( bool firstTime, double dt ) = 0;

    virtual void disabled( double dt ) {}

    bool _debug;
 

    bool _honor_passive;
 
public:
    Component();

    virtual ~Component();
 
    // Subsystem API.
    void update(double dt) override;

    virtual bool configure( SGPropertyNode& prop_root,
                            SGPropertyNode& cfg );

    bool isPropertyEnabled();
};
 
} // of namespace FGXMLAutopilot