October 2016
Intermediate to advanced
452 pages
9h 47m
English
Content preview from Unreal Engine 4 Scripting with C++ CookbookBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Unregistering a delegate
Sometimes, it is necessary to remove a delegate binding. This is like setting a function pointer to nullptr so that it no longer references an object that has been deleted.
Getting ready
You'll need to follow the previous recipe in order for you to have a delegate to unregister.
How to do it...
- In
DelegateListener, add the following overridden function declaration:UFUNCTION() virtual void EndPlay(constEEndPlayReason::Type EndPlayReason) override;
- Implement the function like this:
void ADelegateListener::EndPlay(constEEndPlayReason::Type EndPlayReason) { Super::EndPlay(EndPlayReason); UWorld* TheWorld = GetWorld(); if (TheWorld != nullptr) { AGameMode* GameMode = UGameplayStatics::GetGameMode(TheWorld); AUE4CookbookGameMode * ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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