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// globals.cxx -- Global state that needs to be shared among the sim modules
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// Written by Curtis Olson, started July 2000.
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// Copyright (C) 2000 Curtis L. Olson - curt@flightgear.org
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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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// 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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// 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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// $Id: globals.cxx,v 1.8 2002/01/20 02:52:37 curt Exp $
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#include "globals.hxx"
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#include "fg_props.hxx"
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////////////////////////////////////////////////////////////////////////
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// Implementation of FGGlobals.
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////////////////////////////////////////////////////////////////////////
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FGGlobals::FGGlobals() :
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#if defined(FX) && defined(XMESA)
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props(new SGPropertyNode),
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commands(new SGCommandMgr)
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FGGlobals::~FGGlobals()
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// Save the current state as the initial state.
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FGGlobals::saveInitialState ()
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initial_state = new SGPropertyNode();
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if (!copyProperties(props, initial_state))
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SG_LOG(SG_GENERAL, SG_ALERT, "Error saving initial state");
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// Restore the saved initial state, if any
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FGGlobals::restoreInitialState ()
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if (initial_state == 0) {
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SG_LOG(SG_GENERAL, SG_ALERT, "No initial state available to restore!!!");
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} else if (!copyProperties(initial_state, props)) {
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SG_LOG(SG_GENERAL, SG_INFO,
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"Some errors restoring initial state (probably just read-only props)");
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SG_LOG(SG_GENERAL, SG_INFO, "Initial state restored successfully");
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src/Main/globals.cxx
