Added r_ViewportPos cvar for set the position of a viewport of a game/server launchers

Code/LauncherUnified/Launcher.cpp

@@ -46,6 +46,8 @@ extern "C" void CreateStaticModules(AZStd::vector<AZ::Module*>& modulesOut);
 #   define REMOTE_ASSET_PROCESSOR
 #endif
 
+void CVar_OnViewportPosition(const AZ::Vector2& value);
+
 namespace
 {
     void OnViewportResize(const AZ::Vector2& value);
@@ -60,6 +62,9 @@ namespace
         AzFramework::WindowSize newSize = AzFramework::WindowSize(aznumeric_cast<int32_t>(value.GetX()), aznumeric_cast<int32_t>(value.GetY()));
         AzFramework::WindowRequestBus::Broadcast(&AzFramework::WindowRequestBus::Events::ResizeClientArea, newSize);
     }
+    
+    AZ_CVAR(AZ::Vector2, r_viewportPos, AZ::Vector2::CreateZero(), CVar_OnViewportPosition, AZ::ConsoleFunctorFlags::DontReplicate,
+        "The default position for the launcher viewport, 0 0 means top left corner of your main desktop");
 
     void ExecuteConsoleCommandFile(AzFramework::Application& application)
     {

Code/LauncherUnified/Platform/Android/Launcher_Android.cpp

@@ -433,3 +433,5 @@ void android_main(android_app* appState)
         MAIN_EXIT_FAILURE(appState, GetReturnCodeString(status));
     }
 }
+
+void CVar_OnViewportPosition([[maybe_unused]] const AZ::Vector2& value) {}

Code/LauncherUnified/Platform/Linux/Launcher_Linux.cpp

@@ -113,3 +113,5 @@ int main(int argc, char** argv)
 
     return static_cast<int>(status);
 }
+
+void CVar_OnViewportPosition([[maybe_unused]] const AZ::Vector2& value) {}

Code/LauncherUnified/Platform/Mac/Launcher_Mac.mm

@@ -63,3 +63,5 @@ int main(int argc, char* argv[])
 }
 
 #endif // AZ_TESTS_ENABLED
+
+void CVar_OnViewportPosition([[maybe_unused]] const AZ::Vector2& value) {}

Code/LauncherUnified/Platform/Windows/Launcher_Windows.cpp

@@ -69,3 +69,14 @@ int APIENTRY WinMain([[maybe_unused]] HINSTANCE hInstance, [[maybe_unused]] HINS
 
     return static_cast<int>(status);
 }
+
+void CVar_OnViewportPosition(const AZ::Vector2& value)
+{
+    if (HWND windowHandle = GetActiveWindow())
+    {
+        SetWindowPos(windowHandle, nullptr,
+            value.GetX(),
+            value.GetY(),
+            0, 0, SWP_NOOWNERZORDER | SWP_NOSIZE);
+    }
+}

Code/LauncherUnified/Platform/iOS/Launcher_iOS.mm

@@ -23,3 +23,5 @@ int main(int argc, char* argv[])
     [pool release];
     return 0;
 }
+
+void CVar_OnViewportPosition([[maybe_unused]] const AZ::Vector2& value) {}