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flightgear/src/FDM/NullFDM.cxx
david 5a849b66e8 Major overhaul:
- changed FGSubsystem::update(int) to
  FGSubsystem::update(delta_time_sec); the argument is now delta time
  in seconds rather than milliseconds

- added FGSubsystem::suspend(), FGSubsystem::suspend(bool),
  FGSubsystem::resume(), and FGSubsystem::is_suspended(), all with
  default implementations; is_suspended takes account of the master
  freeze as well as the subsystem's individual suspended state

- the FDMs now use the delta time argument the same as the rest of
  FlightGear; formerly, main.cxx made a special case and passed a
  multiloop argument

- FDMs now calculate multiloop internally instead of relying on
  main.cxx

There are probably some problems -- I've done basic testing with the
major FDMs and subsystems, but we'll probably need a few weeks to
sniff out bugs.
2002-05-11 16:28:50 +00:00

48 lines
1.5 KiB
C++

// NullFDM.hxx -- a do-nothing flight model, used as a placeholder if the
// action is externally driven.
// Written by Curtis Olson, started November 1999.
//
// Copyright (C) 1999 - 2001 Curtis L. Olson - curt@flightgear.org
//
// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
//
// $Id$
#include "NullFDM.hxx"
FGNullFDM::FGNullFDM( double dt ) {
// set_delta_t( dt );
}
FGNullFDM::~FGNullFDM() {
}
// Initialize the NullFDM flight model, dt is the time increment
// for each subsequent iteration through the EOM
void FGNullFDM::init() {
// cout << "FGNullFDM::init()" << endl;
}
// Run an iteration of the EOM. This is a NOP here because the flight
// model values are getting filled in elsewhere (most likely from some
// external source.)
void FGNullFDM::update( double dt ) {
// cout << "FGNullFDM::update()" << endl;
}