diff options
author | Hans Lambermont <hans@lambermont.dyndns.org> | 2002-10-12 15:37:38 +0400 |
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committer | Hans Lambermont <hans@lambermont.dyndns.org> | 2002-10-12 15:37:38 +0400 |
commit | 12315f4d0e0ae993805f141f64cb8c73c5297311 (patch) | |
tree | 59b45827cd8293cfb727758989c7a74b40183974 /source/gameengine/GameLogic/SCA_RandomNumberGenerator.h |
Initial revisionv2.25
Diffstat (limited to 'source/gameengine/GameLogic/SCA_RandomNumberGenerator.h')
-rw-r--r-- | source/gameengine/GameLogic/SCA_RandomNumberGenerator.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/source/gameengine/GameLogic/SCA_RandomNumberGenerator.h b/source/gameengine/GameLogic/SCA_RandomNumberGenerator.h new file mode 100644 index 00000000000..c6cd52dd3db --- /dev/null +++ b/source/gameengine/GameLogic/SCA_RandomNumberGenerator.h @@ -0,0 +1,65 @@ +/** + * Generate random numbers that can be used by other components. Each + * generator needs its own generator, so that the seed can be set + * on a per-generator basis. + * + * $Id$ + * + * ***** BEGIN GPL/BL DUAL LICENSE BLOCK ***** + * + * 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. The Blender + * Foundation also sells licenses for use in proprietary software under + * the Blender License. See http://www.blender.org/BL/ for information + * about this. + * + * 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * The Original Code is Copyright (C) 2001-2002 by NaN Holding BV. + * All rights reserved. + * + * The Original Code is: all of this file. + * + * Contributor(s): none yet. + * + * ***** END GPL/BL DUAL LICENSE BLOCK ***** + */ + +#ifndef __KX_RANDOMNUMBERGENERATOR +#define __KX_RANDOMNUMBERGENERATOR + + +class SCA_RandomNumberGenerator { + + /** base seed */ + long m_seed; + + /* A bit silly.. The N parameter is a define in the .cpp file */ + /** the array for the state vector */ + /* unsigned long mt[N]; */ + unsigned long mt[624]; + + /** mti==N+1 means mt[KX_MT_VectorLenght] is not initialized */ + int mti; /* initialised in the cpp file */ + + /** Calculate a start vector */ + void SetStartVector(void); + public: + SCA_RandomNumberGenerator(long seed); + ~SCA_RandomNumberGenerator(); + unsigned long Draw(); + float DrawFloat(); + long GetSeed(); + void SetSeed(long newseed); +}; + +#endif /* __KX_RANDOMNUMBERGENERATOR */ |