mirror of https://github.com/stella-emu/stella.git
75 lines
1.8 KiB
C++
75 lines
1.8 KiB
C++
//============================================================================
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//
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// SSSS tt lll lll
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// SS SS tt ll ll
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// SS tttttt eeee ll ll aaaa
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// SSSS tt ee ee ll ll aa
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// SS tt eeeeee ll ll aaaaa -- "An Atari 2600 VCS Emulator"
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// SS SS tt ee ll ll aa aa
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// SSSS ttt eeeee llll llll aaaaa
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//
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// Copyright (c) 1995-2014 by Bradford W. Mott, Stephen Anthony
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// and the Stella Team
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//
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// See the file "License.txt" for information on usage and redistribution of
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// this file, and for a DISCLAIMER OF ALL WARRANTIES.
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//
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// $Id$
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//============================================================================
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#ifndef RANDOM_HXX
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#define RANDOM_HXX
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class OSystem;
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#include "bspf.hxx"
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/**
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This is a quick-and-dirty random number generator. It is based on
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information in Chapter 7 of "Numerical Recipes in C". It's a simple
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linear congruential generator.
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@author Bradford W. Mott
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@version $Id$
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*/
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class Random
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{
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public:
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/**
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Create a new random number generator
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*/
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Random();
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public:
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/**
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Re-initialize the random number generator with a new seed,
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to generate a different set of random numbers.
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*/
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void initSeed();
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/**
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Answer the next random number from the random number generator
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@return A random number
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*/
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uInt32 next();
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/**
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Class method which sets the OSystem in use; the constructor will
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use this to reseed the random number generator every time a new
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instance is created
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@param system The system currently in use
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*/
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static void setSystem(const OSystem* system) { ourSystem = system; }
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private:
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// Indicates the next random number
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uInt32 myValue;
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// Set the OSystem we're using
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static const OSystem* ourSystem;
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};
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#endif
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