Add logic for preventing recursive SDK initialization

This allows for loading the game with the client.dll without loading the main worker/sdk dll. gamesdk.dll is imported by the game executable, so we cannot circumvent its loading without some hacks, so instead, we just check if -noworkerdll is passed and not perform any init if its present.

r5dev/core/dllmain.cpp

@@ -18,7 +18,7 @@
 
 void SDK_Init()
 {
-    CheckCPU(); // Check CPU as early as possible, SpdLog also uses SIMD intrinsics.
+    CheckCPU(); // Check CPU as early as possible, SpdLog also uses SSE intrinsics.
 
     MathLib_Init(); // Initialize Mathlib.
     WinSock_Init(); // Initialize Winsock.
@@ -90,17 +90,31 @@ void SDK_Shutdown()
 
 BOOL APIENTRY DllMain(HMODULE hModule, DWORD  dwReason, LPVOID lpReserved)
 {
+#if !defined (DEDICATED) && !defined (CLIENT_DLL)
+    // This dll is imported by the game executable, we cannot circumvent it.
+    // To solve the recursive init problem, we check if -noworkerdll is passed.
+    // If this is passed, the worker dll will not be initialized, which allows 
+    // us to load the client dll (or any other dll) instead, or load the game
+    // without the SDK.
+    s_bNoWorkerDll = !!strstr(GetCommandLineA(), "-noworkerdll");
+#endif // !DEDICATED && CLIENT_DLL
     switch (dwReason)
     {
         case DLL_PROCESS_ATTACH:
         {
-            SDK_Init();
+            if (!s_bNoWorkerDll)
+            {
+                SDK_Init();
+            }
             break;
         }
 
         case DLL_PROCESS_DETACH:
         {
-            SDK_Shutdown();
+            if (!s_bNoWorkerDll)
+            {
+                SDK_Shutdown();
+            }
             break;
         }
     }

r5dev/core/r5dev.h

@@ -9,7 +9,7 @@ __declspec(dllexport) void DummyExport()
     // Required for detours.
 }
 
-const std::string R5R_EMBLEM[] =
+const static std::string R5R_EMBLEM[] =
 {
     R"(+-------------------------------------------------------------+)",
     R"(|  ___ ___ ___     _              _        _       ___   ___  |)",
@@ -19,3 +19,5 @@ const std::string R5R_EMBLEM[] =
     R"(|                                                             |)",
     R"(+-------------------------------------------------------------+)"
 };
+
+static bool s_bNoWorkerDll = false;

r5dev/sdklauncher/basepanel.cpp

@@ -949,6 +949,9 @@ eLaunchMode CUIBaseSurface::BuildParameter(string& svParameters)
 	}
 	case eMode::CLIENT:
 	{
+		svParameters.append("-noworkerdll\n"); // This prevents init of worker dll 
+		//(this dll is always imported, but we want client.dll to do the work instead).
+
 		// GAME ###############################################################
 		if (this->m_DeveloperToggle->Checked())
 		{