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engine/randomstream.cpp

@@ -0,0 +1,48 @@
+//========= 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 );