92 lines
3.0 KiB
C++
92 lines
3.0 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: A higher level link library for general use in the game and tools.
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//
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//===========================================================================//
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#ifndef TIER1_H
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#define TIER1_H
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#if defined(_WIN32)
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#pragma once
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#endif
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#include "../appframework/IAppSystem.h"
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#include "../tier1/convar.h"
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//-----------------------------------------------------------------------------
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// Forward declarations
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//-----------------------------------------------------------------------------
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class ICvar;
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class IProcessUtils;
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//-----------------------------------------------------------------------------
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// These tier1 libraries must be set by any users of this library.
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// They can be set by calling ConnectTier1Libraries.
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// It is hoped that setting this, and using this library will be the common
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// mechanism for allowing link libraries to access tier1 library interfaces
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//-----------------------------------------------------------------------------
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// These are marked DLL_EXPORT for Linux.
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DLL_EXPORT ICvar *cvar;
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extern ICvar *g_pCVar;
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extern IProcessUtils *g_pProcessUtils;
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//-----------------------------------------------------------------------------
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// Call this to connect to/disconnect from all tier 1 libraries.
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// It's up to the caller to check the globals it cares about to see if ones are
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// missing
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//-----------------------------------------------------------------------------
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void ConnectTier1Libraries(CreateInterfaceFn *pFactoryList, int nFactoryCount);
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void DisconnectTier1Libraries();
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//-----------------------------------------------------------------------------
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// Helper empty implementation of an IAppSystem for tier2 libraries
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//-----------------------------------------------------------------------------
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template <class IInterface, int ConVarFlag = 0>
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class CTier1AppSystem : public CTier0AppSystem<IInterface> {
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typedef CTier0AppSystem<IInterface> BaseClass;
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public:
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CTier1AppSystem(bool bIsPrimaryAppSystem = true)
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: BaseClass(bIsPrimaryAppSystem) {}
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virtual bool Connect(CreateInterfaceFn factory) {
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if (!BaseClass::Connect(factory)) return false;
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if (BaseClass::IsPrimaryAppSystem()) {
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ConnectTier1Libraries(&factory, 1);
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}
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return true;
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}
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virtual void Disconnect() {
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if (BaseClass::IsPrimaryAppSystem()) {
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DisconnectTier1Libraries();
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}
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BaseClass::Disconnect();
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}
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virtual InitReturnVal_t Init() {
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/*InitReturnVal_t nRetVal = BaseClass::Init();
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if ( nRetVal != INIT_OK )
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return nRetVal;
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if ( g_pCVar && BaseClass::IsPrimaryAppSystem() )
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{
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ConVar_Register( ConVarFlag );
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}*/
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return INIT_OK;
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}
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virtual void Shutdown() {
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/*if ( g_pCVar && BaseClass::IsPrimaryAppSystem() )
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{
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ConVar_Unregister( );
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}*/
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BaseClass::Shutdown();
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}
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};
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#endif // TIER1_H
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