Pass a variable between two actors

Development Pipeline & Plugins Editor Scripting
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1

Hi I’m a bigginer and I have question .
I have an actor , it’s some kind of bomb and it’s has a virtual function
named OnComponentBeginOverlap that I bind it with a delegate to the root of actor wich is a sphere
Some thing like :
MainSphere->OnComponentBeginOverlap.AddDynamic()

Now that’s my question I want to pass a boolean to a AnimInstance or another actor . when player overlap with current actor , I don’t have a problem with overlaping I test it , my problem is passing the bool from this class to another class
I tried defrent ways but unfortunately it’s still not working

I will be very happy if you answer my question, I know it’s shall be very easy for you

2

OnOverlap delegate already keeps other actor in function variables.

For that purpose you should do.

MainSphere->OnComponentBeginOverlap.AddDynamic(this, &AClassName::FunctionName);

Here is the definition of ComponentOverlap in PrimitiveComponent.h

DECLARE_DYNAMIC_MULTICAST_SPARSE_DELEGATE_SixParams( FComponentBeginOverlapSignature, UPrimitiveComponent, OnComponentBeginOverlap, UPrimitiveComponent*, OverlappedComponent, AActor*, OtherActor, UPrimitiveComponent*, OtherComp, int32, OtherBodyIndex, bool, bFromSweep, const FHitResult &,SweepResult);

Based on above signature macro your function (imagining its Actor) you should have function like this :

void AClassName::FunctionName(UPrimitiveComponent* OverlappedComponent, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult &SweepResult)
{
 if (OtherActor != nullptr)
 {
     AActor myActor = Cast<AYourPlayerClass>(OtherActor);
     if (myActor)
         myActor->DoSomething()
 }
}

At here other actor is the actor actually overlapping with this actor. So you will cast it to your main character.

If you have further questions dont hesitate to ask me.

3

Please mark as answer :slight_smile:

4

Thank you

5

I test it , that was true
Thank you , I am glad we have good guy like you in commniute
But some thing I want to add ,
you forgot a '’ Singh in line 5 you want to create a variable
and for other guys who will see this you can use this line of code to have direct connection to the character UAnimInstane
UCharacterAnimInstance AnimInstance = Cast(myactor()->GetMesh()->GetAnimInstance());

UCharacterAnimInstance is your custom UAnimIntance
myactor is referenced to the answer comment

6

thank you such valuable comments. I’m always here to help people as much as I can.