dbc223eb84
Import existing source tree; original VCS history is no longer available. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
72 lines
1.9 KiB
C++
72 lines
1.9 KiB
C++
/*(GPL)
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------------------------------------------------------------
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Kobo Deluxe - An enhanced SDL port of XKobo
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------------------------------------------------------------
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* Copyright (C) 1995, 1996, Akira Higuchi
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* Copyright (C) 2002, 2007 David Olofson
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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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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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _KOBO_RANDOM_H_
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#define _KOBO_RANDOM_H_
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#include <time.h>
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#include "glSDL.h"
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class rand_num_t
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{
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Uint32 seed;
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public:
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void init(Uint32 _seed = 0)
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{
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if(_seed)
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seed = _seed;
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else
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seed = SDL_GetTicks();
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}
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Uint32 get_seed() { return seed; }
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Uint32 get()
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{
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seed *= 1566083941UL;
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seed++;
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seed &= 0xffffffffUL;
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return seed;
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}
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Uint32 get(Uint32 bit)
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{
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seed *= 1566083941UL;
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seed++;
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seed &= 0xffffffffUL;
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return (seed >> (32 - bit));
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}
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};
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//This instance is *ONLY* for map generation and
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//pure game AI stuff!!! Stealing numbers from here
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//will screw up demo playback totally, as demos
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//record only the seed used for each level; not
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//every random number used.
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extern rand_num_t gamerand;
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//Use this "public" random number generator for
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//other stuff, like explosion effects, and things
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//that may pick different amounts of numbers
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//depending on engine version, configuration,
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//computer speed and the like.
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extern rand_num_t pubrand;
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#endif //_KOBO_RANDOM_H_
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