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Bug report: UGameplayStatics::GetPlayerController works wrong

Explaination:

UGameplayStatics::GetPlayerController function locates a player controller by known player index, but can return wrong controller under some conditions. This function trivially loops through all existing controllers in the world and returns n'th controller. It will select a wrong controller if new temporary controller is created for an existing player and player switched to this controller using Player->SwitchController(NewPC).

How to reproduce:

 UGameInstance* Instance = GetGameInstance();
 ULocalPlayer* Player = Instance->GetFirstGamePlayer();
 AMenuPlayerController* NewMenuController = World->SpawnActor<APlayerController>(APlayerController::StaticClass(), SpawnInfo);
 Player->SwitchController(NewMenuController);
 
 // Now any calls of GetPlayerController(World, 0) will return wrong controller
 // For example you will unable to quit game using UKismetSystemLibrary::QuitGame
 // or using connected blueprint node. I tested on blueprint node, and it ignores quitting attempts
 // util controllers are switched back
 

Desired behaviour: Always return activated controller for specified player and ignore suspended controllers

Product Version: UE 4.17
Tags:
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asked Jan 12 '18 at 08:40 AM in Bug Reports

avatar image

c4tnt
1k 12 8 31

avatar image Sean L ♦♦ STAFF Jan 12 '18 at 03:22 PM

Hello,

We've recently made a switch to a new bug reporting method using a more structured form. Please visit the link below for more details and report the issue using the new Bug Submission Form. Feel free to continue to use this thread for community discussion around the issue.

https://forums.unrealengine.com/unreal-engine/announcements-and-releases/1410408-unreal-engine-bug-submission-form

Thanks

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