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How can I avoid an error when casting from AHUD to CustomHUD?

Hi

I am trying to cast my HUD class from AHUD class to AMyProjectHUD inside my character class. But, I am getting some errors when doing it. Here is the code

 APlayerController* MyPC = Cast<APlayerController>(Controller);
         AMyProjectHUD* MyHUD;
         if (MyPC)
         {
             MyHUD = Cast<AMyProjectHUD>(MyPC->GetHUD());
         }
         if (MyHUD)
         {
             const FVector2D Center = MyHUD->GetCenter();
             }

I am getting the following errors

1>d:\ue4\new folder\myproject\source\myproject\myprojectcharacter.cpp(77): error C2220: warning treated as error - no 'object' file generated 1>d:\ue4\new folder\myproject\source\myproject\myprojectcharacter.cpp(77): warning C4701: potentially uninitialized local variable 'MyHUD' used 1>d:\ue4\new folder\myproject\source\myproject\myprojectcharacter.cpp(77): warning C4703: potentially uninitialized local pointer variable 'MyHUD' used

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asked May 07 '14 at 09:17 AM in C++ Programming

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envenger
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The compiler is telling you that at the point that you check for MyHUD being non-null, there is a potential for it to be uninitialized. In C++ pointers that are uninitialized will be garbage stack memory and thus you could end up with a crash trying to dereference a pointer that doesn't point to anything.

You can fix this by simply initializing MyHUD to nullptr:

 AMyProjectHUD* MyHUD = nullptr;
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answered May 07 '14 at 10:02 AM

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BrɑκеPɑd STAFF
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