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error C2440: 'initializing' : cannot convert from 'UBlackboardComponent *' to 'UObject *'

Am getting this error:

 error C2440: 'initializing' : cannot convert from 'UBlackboardComponent *' to 'UObject *'

For this line

 BlackboardComp = PCIP.CreateDefaultSubobject<UBlackboardComponent>(this, TEXT("BlackboardComp"));


Worked on a tutorial i was watching so have i made a typo anywhere??

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asked Sep 09 '14 at 11:44 AM in C++ Programming

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Green_
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avatar image Pierdek Sep 09 '14 at 11:47 AM

Show declaration of BlackboardComp from an header file.

avatar image Green_ Sep 09 '14 at 12:22 PM
 UPROPERTY(transient)
         TSubobjectPtr<class UBlackboardComponent> BlackboardComp;
avatar image Pierdek Sep 09 '14 at 04:52 PM

No clue, the code looks the same as in ShooterGame, are you sure this the wrong line ?

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Hi Green_,

Do you have the following line in your .h file?

 #include "BehaviorTree/BlackboardComponent.h"

If you are following the tutorial I think you may be following, you will most likely also need to use

 #include "BehaviorTree/BehaviorTreeComponent.h"

Also, you should be using Transient instead of transient. I believe that was changed recently.

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answered Sep 10 '14 at 07:19 PM

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Tim C ♦♦ STAFF
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avatar image Green_ Sep 11 '14 at 08:13 AM

Yep this fixed it, thank you. Why do i have to import these? Are they not included already?

avatar image Tim C ♦♦ STAFF Sep 11 '14 at 07:59 PM

In order to improve performance, the Engine no longer includes everything automatically. The more commonly used classes are still available, but you may find yourself needing to include specific header files occasionally.

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