TRandom.h

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#pragma once
/*
------------------------------------------------------------------------------
rand.c: By Bob Jenkins.  My random number generator, ISAAC.  Public Domain.
MODIFIED:
  960327: Creation (addition of randinit, really)
  970719: use context, not global variables, for internal state
  980324: added main (ifdef'ed out), also rearranged randinit()
  010626: Note that this is public domain
------------------------------------------------------------------------------
*/
// mix with source: https://github.com/jawnsy/Math-Random-ISAAC-XS/blob/master/src/rand.c
 
#define RANDSIZL ( 4 ) /* 8 for crypto, 4 for simulations (aka Toshi uses 4) */
#define RANDSIZ  ( 1 << RANDSIZL )
 
#include "Toshi/THPTimer.h"
 
TOSHI_NAMESPACE_START
 
class TRandom
{
public:
    TRandom();
 
    TINT GetInt();
    TINT GetInt( TUINT32 a_iLower, TUINT32 a_iUpper );
    TINT GetInt( TUINT32 a_iUpper );
 
    TFLOAT GetFloat();
    TFLOAT GetFloatMinMax( TFLOAT a_fLower, TFLOAT a_fUpper );
    TFLOAT GetFloat2();
 
    TUINT32 RandRaw();
 
    void    SetSeed( TUINT a_uiSeed );
    TUINT32 GetSeed() const { return m_uiSeed; }
 
private:
    void Isaac();
    void RandInit();
 
private:
    TUINT32 m_uiSeed;              // 0x0
    TUINT32 m_uiRndCnt;            // 0x4
    TUINT32 m_pRandrsl[ RANDSIZ ]; //0x8
 
    TUINT32 m_pRandmem[ RANDSIZ ]; // 0x48
 
    TUINT32 m_uiRandA; // 0x88
    TUINT32 m_uiRandB; // 0x8C
    TUINT32 m_uiRandC; // 0x90
};
 
TOSHI_NAMESPACE_END