Command line argument for starting level does not work for shipping version?

Development Platform & Builds
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1

UE version 4.21

We need our game to start on different levels for different users.

Thus, we specify, for example, the “OCU” starting level for our game at runtime with a command line parameter for our packaged game like this: OurGame-Win64.exe OCU

That works fine with a debug packaging, but it does not work for a shipping packaging (the shipping version just opens the default level). Does the shipping packaging handle command line parameters differently? Any suggestions?

Thanks

2

If you set define UE_ALLOW_MAP_OVERRIDE_IN_SHIPPING as 1 via UE4’s build system, it should work.

See UGameInstance::StartGameInstance():


 const TCHAR* Tmp = FCommandLine::Get();

#if UE_BUILD_SHIPPING && !UE_SERVER && !UE_ALLOW_MAP_OVERRIDE_IN_SHIPPING && !ENABLE_PGO_PROFILE
// In shipping don't allow a map override unless on server, or running PGO profiling
Tmp = TEXT("");
#endif // UE_BUILD_SHIPPING && !UE_SERVER && !UE_ALLOW_MAP_OVERRIDE_IN_SHIPPING && !ENABLE_PGO_PROFILE

#if !UE_SERVER

Or just override the entire function if you have some extra special code.
e.g. map list, custom invite solution

3

I’ve seem notes where you can override
UE_ALLOW_MAP_OVERRIDE_IN_SHIPPING
in target.cs or build.cs (??)

  1. is this possible?
  2. what a would be the format for it? (example?) given that it is c# ?
    Thanks