hl2_src-leak-2017/src/engine/randomstream.cpp

49 lines
1.4 KiB
C++

//========= Copyright Valve Corporation, All rights reserved. ============//
//
// Purpose: random steam class
//
//===========================================================================//
#include <tier0/dbg.h>
#include <vstdlib/random.h>
#include "cdll_int.h"
// memdbgon must be the last include file in a .cpp file!!!
#include "tier0/memdbgon.h"
//-----------------------------------------------------------------------------
//
// implementation of IUniformRandomStream
//
//-----------------------------------------------------------------------------
class CEngineUniformRandomStream : public IUniformRandomStream
{
public:
// Sets the seed of the random number generator
void SetSeed( int iSeed )
{
// Never call this from the client or game!
Assert(0);
}
// Generates random numbers
float RandomFloat( float flMinVal = 0.0f, float flMaxVal = 1.0f )
{
return ::RandomFloat( flMinVal, flMaxVal );
}
float RandomFloatExp( float flMinVal = 0.0f, float flMaxVal = 1.0f, float flExponent = 1.0f )
{
return ::RandomFloatExp( flMinVal, flMaxVal, flExponent );
}
int RandomInt( int iMinVal, int iMaxVal )
{
return ::RandomInt( iMinVal, iMaxVal );
}
};
static CEngineUniformRandomStream s_EngineRandomStream;
EXPOSE_SINGLE_INTERFACE_GLOBALVAR( CEngineUniformRandomStream, IUniformRandomStream,
VENGINE_CLIENT_RANDOM_INTERFACE_VERSION, s_EngineRandomStream );