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random Generator

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This commit is contained in:
James Turk 2003-04-28 00:23:06 +00:00
parent 6efc94f199
commit 36b11122d4
2 changed files with 57 additions and 3 deletions
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56
include/ZE_ZEngine.h
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@ -13,7 +13,7 @@
File: ZE_ZEngine.h <br> File: ZE_ZEngine.h <br>
Description: Header file for ZEngine class, the core of the ZEngine. <br> Description: Header file for ZEngine class, the core of the ZEngine. <br>
Author(s): James Turk <br> Author(s): James Turk <br>
$Id: ZE_ZEngine.h,v 1.23 2003/04/27 22:49:14 cozman Exp $<br> $Id: ZE_ZEngine.h,v 1.24 2003/04/28 00:23:06 cozman Exp $<br>
\file ZE_ZEngine.h \file ZE_ZEngine.h
\brief Definition file for core ZEngine class. \brief Definition file for core ZEngine class.
@ -566,6 +566,60 @@ class ZEngine
**/ **/
void FlushErrors(); void FlushErrors();
////////////////////////////
//Random Number Generation//
////////////////////////////
/*!
\brief Seed random number generator.
Reseed Mersenne Twister (MT19937) random number generator. NOTE: Generator is initialized upon creation of ZEngine using time.
(Faster and more random than rand(), see src/external/mt19937ar.c)
\since 0.8.3
\param seed Seed for random sequence.
**/
void SeedRandom(unsigned long seed);
/*!
\brief Obtain random integer [0,max).
Obtain random long l where 0 <= l < max.
\since 0.8.3
\param max Limit for random number.
\return Random unsigned long.
**/
unsigned long RandLong(unsigned long max);
/*!
\brief Obtain random integer [min,max].
Obtain random long l where min <= l <= max.
\since 0.8.3
\param min Lower limit for random number.
\param max Upper limit for random number.
\return Random long.
**/
long RandLong(long min, long max);
/*!
\brief Obtain random double [0,1).
Obtain random double d where 0 <= d < 1.
\since 0.8.3
\return Random double [0,1).
**/
double RandDouble();
/*!
\brief Obtain random double [min,max].
Obtain random double d where min <= d <= max.
\since 0.8.3
\param min Lower limit for random number.
\param max Upper limit for random number.
\return Random double [min,max].
**/
double RandDouble(double min, double max);
//////////////////////////// ////////////////////////////
//Data Loading + Unloading// //Data Loading + Unloading//
//////////////////////////// ////////////////////////////

4
src/ZE_ZEngine.cpp
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@ -13,7 +13,7 @@
File: ZE_ZEngine.cpp <br> File: ZE_ZEngine.cpp <br>
Description: Implementation source file for ZEngine library main singleton class. <br> Description: Implementation source file for ZEngine library main singleton class. <br>
Author(s): James Turk <br> Author(s): James Turk <br>
$Id: ZE_ZEngine.cpp,v 1.37 2003/04/27 22:49:14 cozman Exp $<br> $Id: ZE_ZEngine.cpp,v 1.38 2003/04/28 00:23:06 cozman Exp $<br>
\file ZE_ZEngine.cpp \file ZE_ZEngine.cpp
\brief Central source file for ZEngine. \brief Central source file for ZEngine.
@ -61,7 +61,7 @@ ZEngine::ZEngine()
mLogAllErrors = true; mLogAllErrors = true;
mErrlog = stderr; mErrlog = stderr;
ZEngine::SeedRandom(static_cast<unsigned long>(time(NULL))); SeedRandom(static_cast<unsigned long>(time(NULL)));
} }
ZEngine* ZEngine::GetInstance() ZEngine* ZEngine::GetInstance()