OnComponentBeginOverlap UE4 code example

Example: onoverlapbegin

void ALightSwitchCodeOnly::OnOverlapBegin(UPrimitiveComponent* OverlappedComp, AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult& SweepResult)  
{  
    // Other Actor is the actor that triggered the event. Check that is not ourself.  
    if ( (OtherActor != nullptr ) && (OtherActor != this) && ( OtherComp != nullptr ) )  
    {  
        // Turn off the light  
        PointLight->SetVisibility(false);  
    }  
}