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- /************************************************************************
- filename: CEGUISingleton.h
- created: 22/2/2004
- author: Paul D Turner
-
- purpose: Singleton Base Class
- *************************************************************************/
- /*************************************************************************
- Crazy Eddie's GUI System (http://www.cegui.org.uk)
- Copyright (C)2004 - 2005 Paul D Turner (paul@cegui.org.uk)
-
- This library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- This library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with this library; if not, write to the Free Software
- Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
- *************************************************************************/
- /*************************************************************************
-
- The code in this file is taken from article 1.3 in the the book:
- Game Programming Gems from Charles River Media
-
- *************************************************************************/
- #ifndef _CEGUISingleton_h_
- #define _CEGUISingleton_h_
-
- #include "CEGUIBase.h"
- #include <cassert>
-
- // Start of CEGUI namespace section
- namespace CEGUI
- {
- /* Copyright (C) Scott Bilas, 2000.
- * All rights reserved worldwide.
- *
- * This software is provided "as is" without express or implied
- * warranties. You may freely copy and compile this source into
- * applications you distribute provided that the copyright text
- * below is included in the resulting source code, for example:
- * "Portions Copyright (C) Scott Bilas, 2000"
- */
-
-
- template <typename T> class CEGUIEXPORT Singleton
- {
- protected:
- static T* ms_Singleton;
-
- public:
- Singleton( void )
- {
- assert( !ms_Singleton );
- ms_Singleton = static_cast<T*>(this);
- }
- ~Singleton( void )
- { assert( ms_Singleton ); ms_Singleton = 0; }
- static T& getSingleton( void )
- { assert( ms_Singleton ); return ( *ms_Singleton ); }
- static T* getSingletonPtr( void )
- { return ( ms_Singleton ); }
- };
-
- } // End of CEGUI namespace section
-
-
-
- #endif // end of guard _CEGUISingleton_h_
-