I can pick large objects such as a box. But when i’m trying to grab small object(spoon or candle), it just falls. Link to youtube video: https://youtu.be/HwCcrO0r4zk
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Does it work if you use GrabComponentAtLocationWithRotation?
What should i pass in rotation argument?
The components rotation.
if (!PhysicsHandle) { return; }
HitResult = GetPhysicsBodyInReach();
AActor* ActorHit = HitResult.GetActor();
UPrimitiveComponent* HitComponent = HitResult.GetComponent();
if (ActorHit)
PhysicsHandle->GrabComponentAtLocationWithRotation(HitComponent, NAME_None, GetLineTraceEnd(), ActorHit->GetActorRotation()); Did I write it correctly?That should be it. I also forgot that you would need to use SetTargetLocationAndRotation within Tick as well.
I did everything as you said, but the result is the same and now the objects have strange behavior https://youtu.be/M7gfja8iuzE
void UGrabber::TickComponent(float DeltaTime, ELevelTick TickType, FActorComponentTickFunction* ThisTickFunction)
{
Super::TickComponent(DeltaTime, TickType, ThisTickFunction);
if (!PhysicsHandle) { return; }
if (PhysicsHandle->GrabbedComponent)
{
HitResult = GetPhysicsBodyInReach();
AActor* ActorHit = HitResult.GetActor();
if (ActorHit)
PhysicsHandle->SetTargetLocationAndRotation(GetLineTraceEnd(), ActorHit->GetActorRotation());
}
}
if I make object collision much larger, I can take it without any problems.
That might just be the issue then. Could you show your line trace code?
FHitResult UGrabber::GetPhysicsBodyInReach() const
{
FHitResult Hit;
FVector PlayerVPLoc;
FRotator PlayerVPRot;
float Reach = 180.f;
GetWorld()->GetFirstPlayerController()->GetPlayerViewPoint(OUT PlayerVPLoc, OUT PlayerVPRot);
FVector LineTraceEnd = PlayerVPLoc + PlayerVPRot.Vector() * Reach;
FCollisionQueryParams TraceParams(FName(TEXT("")), false, GetOwner());
GetWorld()->LineTraceSingleByObjectType(
OUT Hit,
PlayerVPLoc,
LineTraceEnd,
FCollisionObjectQueryParams(ECollisionChannel::ECC_PhysicsBody),
TraceParams
);
if (Hit.GetActor())
{
UE_LOG(LogTemp, Warning, TEXT("%s"), *Hit.GetActor()->GetName());
}
return Hit;
}
FVector UGrabber::GetLineTraceEnd() const
{
FVector PlayerVPLoc;
FRotator PlayerVPRot;
float Reach = 180.f;
GetWorld()->GetFirstPlayerController()->GetPlayerViewPoint(OUT PlayerVPLoc, OUT PlayerVPRot);
FVector LineTraceEnd = PlayerVPLoc + PlayerVPRot.Vector() * Reach;
return LineTraceEnd;
}
And you’re not using complex collision for simple? Do they have a good simple collision?
I created box collision for plate, but it didn’t change much
These don’t look simple enough. What if you made all of them boxes?
It didn’t help
Have you tried adding a debug line? Maybe due to the lack of a crosshair you aren’t hitting where you think you are?
No, I’m hitting the object
Would you mind sending me your project using the following link?
Please use File > Package Project > Zip Up Project within Unreal as this will ensure only required files are zipped up and things like the Binaries are excluded.