//
// Common functions for Object DLL capabilities
// C. Beaudet
//

#include "stdafx.h"
#include "acp_base.h"
#include "afxdllx.h"    
#include "incITF.h"
#include "vig.h"

#include "incOPD.h"
/*
 *------------------------------------------------------------------------
 * Global vars
 *------------------------------------------------------------------------
 */
static char							*gs_p_szCPAVersion = C_szCPAVersion;
static AFX_EXTENSION_MODULE NEAR    extensionDLL = { NULL, NULL };

#ifdef DLL_ONLY_ONE_INSTANCE
static POInterface *gs_p_oPOInterface = NULL;
#endif 

static CList<CPA_DLLBase*,CPA_DLLBase*> g_oListOfInstances;	//private internal

//------------------------------------------------------------------------
// functions that are present in all DLL :
//------------------------------------------------------------------------

//========================================================================
// Get current CPA version
//========================================================================
extern "C" char __declspec(dllexport) *fn_p_szGetCPAVersion(void)
{
    return gs_p_szCPAVersion;
}

//========================================================================
// Get type of this DLL
//========================================================================
extern "C" tdstDLLIdentity __declspec(dllexport) *fn_p_stGetDLLIdentity(void)
{
	g_stPOIdentity.eType = OBJECT_DLL;							//object DLL type
	g_stPOIdentity.csName = C_szDLLPhysicalObjectName;			//object DLL name (unique name)
	g_stPOIdentity.hModule = NULL;								//********************** private internal
	g_stPOIdentity.p_oListOfInstances = &g_oListOfInstances;	//********************** private internal
  
	return &g_stPOIdentity;
}

//========================================================================
// DLL init function
//========================================================================
extern "C" void __declspec(dllexport) fn_vInitDll(void)
{
	new CDynLinkLibrary(extensionDLL);
}

//========================================================================
// DLL entry point
//========================================================================
extern "C" int __stdcall DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
	if (dwReason == DLL_PROCESS_ATTACH)
	{
		if (!AfxInitExtensionModule(extensionDLL, hInstance))
		   return 0;
	}
	return 1;
}

//========================================================================
// Get the DLL
//========================================================================
extern "C" CPA_DLLBase __declspec(dllexport) *fn_p_oGetDLL(long lKey)
{
#ifdef DLL_ONLY_ONE_INSTANCE

	switch(lKey)
	{
	case 0:	// the game world
		if (gs_p_oPOInterface == NULL)
		{
			gs_p_oPOInterface = new POInterface();
			ASSERT(gs_p_oPOInterface != NULL);
		}
		return gs_p_oPOInterface;
		break;

	default:
		return NULL;
	}

#else //DLL_ONLY_ONE_INSTANCE

	switch(lKey)
	{
	case 0:	// the game world
		return new POInterface();
		break;

	default:
		return NULL;
	}

#endif //DLL_ONLY_ONE_INSTANCE
}


//------------------------------------------------------------------------
// functions that are present in this type of DLL only :
//------------------------------------------------------------------------

#undef DLL_ONLY_ONE_INSTANCE