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external/vpc/public/tier2/tier2.h

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+//===== Copyright � 2005-2005, Valve Corporation, All rights reserved. ======//
+//
+// Purpose: A higher level link library for general use in the game and tools.
+//
+//===========================================================================//
+
+
+#ifndef TIER2_H
+#define TIER2_H
+
+#if defined( _WIN32 )
+#pragma once
+#endif
+
+#include "tier1/tier1.h"
+
+
+//-----------------------------------------------------------------------------
+// Call this to connect to/disconnect from all tier 2 libraries.
+// It's up to the caller to check the globals it cares about to see if ones are missing
+//-----------------------------------------------------------------------------
+void ConnectTier2Libraries( CreateInterfaceFn *pFactoryList, int nFactoryCount );
+void DisconnectTier2Libraries();
+
+
+//-----------------------------------------------------------------------------
+// Call this to get the file system set up to stdio for utilities, etc:
+//-----------------------------------------------------------------------------
+void InitDefaultFileSystem(void);
+void ShutdownDefaultFileSystem(void);
+
+
+//-----------------------------------------------------------------------------
+// for simple utilities using valve libraries, call the entry point below in main(). It will
+// init a filesystem for you, init mathlib, and create the command line. Note that this function
+// may modify argc/argv because it filters out arguments (like -allowdebug).
+//-----------------------------------------------------------------------------
+void InitCommandLineProgram( int &argc, char ** &argv );
+
+
+//-----------------------------------------------------------------------------
+// Helper empty implementation of an IAppSystem for tier2 libraries
+//-----------------------------------------------------------------------------
+template< class IInterface, int ConVarFlag = 0 > 
+class CTier2AppSystem : public CTier1AppSystem< IInterface, ConVarFlag >
+{
+	typedef CTier1AppSystem< IInterface, ConVarFlag > BaseClass;
+
+public:
+	virtual bool Connect( CreateInterfaceFn factory ) 
+	{
+		if ( !BaseClass::Connect( factory ) )
+			return false;
+
+		ConnectTier2Libraries( &factory, 1 );
+		return true;
+	}
+
+	virtual InitReturnVal_t Init()
+	{
+		InitReturnVal_t nRetVal = BaseClass::Init();
+		if ( nRetVal != INIT_OK )
+			return nRetVal;
+
+		return INIT_OK;
+	}
+
+	virtual AppSystemTier_t GetTier()
+	{
+		return APP_SYSTEM_TIER2;
+	}
+
+	virtual void Shutdown()
+	{
+		BaseClass::Shutdown();
+	}
+
+	virtual void Disconnect() 
+	{
+		DisconnectTier2Libraries();
+		BaseClass::Disconnect();
+	}
+};
+
+
+//-----------------------------------------------------------------------------
+// Distance fade information
+//-----------------------------------------------------------------------------
+enum FadeMode_t
+{
+	// These map directly to cpu_level, and g_aFadeData contains settings for each given cpu_level.
+	// The exception is 'FADE_MODE_LEVEL', which refers to level-specific values in the map entity.
+	FADE_MODE_NONE = 0,
+	FADE_MODE_LOW,
+	FADE_MODE_MED,
+	FADE_MODE_HIGH,
+	FADE_MODE_360,
+	FADE_MODE_LEVEL,
+
+	FADE_MODE_COUNT,
+};
+
+struct FadeData_t
+{
+	float	m_flPixelMin;		// Size (height in pixels) above which objects start to fade in
+	float	m_flPixelMax;		// Size (height in pixels) above which objects are fully faded in
+	float	m_flWidth;			// Reference screen res w.r.t which the above pixel values were chosen
+	float	m_flFadeDistScale;	// Scale factor applied before entity distance-based fade is calculated
+};
+
+// see tier2.cpp for data!
+extern FadeData_t g_aFadeData[FADE_MODE_COUNT];
+
+
+//-----------------------------------------------------------------------------
+// Used by the resource system for fast resource frame counter
+//-----------------------------------------------------------------------------
+extern uint32 g_nResourceFrameCount;
+
+
+#endif // TIER2_H
+