Why is the pawn sometimes destroyed after the ragdoll?

Development Programming & Scripting C++
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1

Sometimes the pawn is destroyed automatically.
I’m simulating a respawn. But I don’t destroy the actor.

1-First I change the collision settings on the mesh and the capsule (Ragdoll).
2-I wait five seconds
3-Restored mesh and capsule collisions
4-I attach the mesh to the capsule
5-Teleport to respawn point

Most of the time this works correctly. But sometimes the pawn is destroyed while I wait the five seconds.

Does anyone know why this happens?

This is the capsule collisions configuration:

Capsule (Alive):

void UCharacterCapsuleComponent::Alive()
{	
	SetNotifyRigidBodyCollision(true);
	SetGenerateOverlapEvents(true);
	CanCharacterStepUpOn = ECanBeCharacterBase::ECB_No;
	SetCollisionEnabled( ECollisionEnabled::QueryAndPhysics);
	SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Block);
	SetCollisionResponseToChannel(ECollisionChannel::ECC_Pawn,	ECollisionResponse::ECR_Block);
	SetCollisionResponseToChannel( ECollisionChannel::ECC_Visibility,	ECollisionResponse::ECR_Ignore);
	SetCollisionResponseToChannel( ECollisionChannel::ECC_Camera,	ECollisionResponse::ECR_Ignore);
	SetSimulatePhysics(false);	
}

Capsule (Ragdoll)

void UCharacterCapsuleComponent::Dead() 
{	
	SetNotifyRigidBodyCollision(false);
	SetGenerateOverlapEvents(false);
	CanCharacterStepUpOn = ECanBeCharacterBase::ECB_Yes;
	SetCollisionEnabled( ECollisionEnabled::NoCollision );	
	SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Ignore);	
}

This is the mesh collisions configuration:

Mesh (Alive):

void UCharacterSkeletalMehs::Alive()
{	
	SetGenerateOverlapEvents(true);
	CanCharacterStepUpOn = ECanBeCharacterBase::ECB_No;
	SetCollisionEnabled( ECollisionEnabled::QueryAndPhysics);
	SetCollisionObjectType( ECollisionChannel::ECC_Pawn );
	
	
	SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Block);
	SetCollisionResponseToChannel( ECollisionChannel::ECC_Pawn, ECollisionResponse::ECR_Ignore);
	SetCollisionResponseToChannel( ECollisionChannel::ECC_WorldDynamic, ECollisionResponse::ECR_Ignore);
	SetCollisionResponseToChannel( ECollisionChannel::ECC_Camera, ECollisionResponse::ECR_Ignore);

	SetSimulatePhysics(false);
}

Mesh (Ragdoll)


void UCharacterSkeletalMehs::Dead()
{	
	SetGenerateOverlapEvents(false);
	CanCharacterStepUpOn = ECanBeCharacterBase::ECB_Yes;
	SetCollisionEnabled( ECollisionEnabled::PhysicsOnly );
	SetCollisionObjectType( ECollisionChannel::ECC_Pawn );
	SetCollisionResponseToAllChannels(ECollisionResponse::ECR_Ignore);
	SetCollisionResponseToChannel( ECollisionChannel::ECC_WorldStatic, ECollisionResponse::ECR_Block);
	SetAllBodiesSimulatePhysics(true);			
}

Restore the pawn:

void UCharacterSkeletalMehs::Restore()
{	
	AActor* TheOwner = GetOwner();
	if (!IsValid(TheOwner)) return;
	

	const ACharacter *Character = Cast<ACharacter>(TheOwner);
	if (!IsValid(Character)) return;
	

	UCapsuleComponent* CapsuleComponent = Character->GetCapsuleComponent();
	if (!IsValid(CapsuleComponent))  return;

	const FAttachmentTransformRules AttachmentRules = FAttachmentTransformRules
	(
		EAttachmentRule::KeepRelative,
		EAttachmentRule::KeepRelative,
		EAttachmentRule::KeepRelative,
		false
	);
	
	if (!AttachToComponent(CapsuleComponent, AttachmentRules)) return;

	TheOwner->SetActorTransform(ActorTransform, false,	nullptr, ETeleportType::TeleportPhysics  );
	SetRelativeTransform(MeshTransform,false,	nullptr,  ETeleportType::TeleportPhysics );	
}

Thank you so much!!

4

This seems to work.
Seems like the pawn is no longer destroyed on death.

Following Lyra’s example I added this to my code at the time of death.

For movement component:

const ACharacter* TheOwner = GetOwner<ACharacter>();
if (!IsValid(TheOwner))return;	

UCharacterMovementComponent* MoveComp = CastChecked<UCharacterMovementComponent>(TheOwner->GetCharacterMovement());
if (!IsValid(MoveComp)) return;		
	
MoveComp->StopMovementImmediately();
MoveComp->SetComponentTickEnabled(false)

For the skeletal mesh:

WakeAllRigidBodies();
bBlendPhysics = true;

However I’m not sure why this actually works.
As it only happened with NPCs, I suppose there was some task moving the pawn at the moment of death. And StopMovementImmediately(); cancels the AIMoveTo() task.
So at the end of the day I think AIMoveTo() was to blame for everything.

They are just assumptions.
I would like to know what was really happening.
If you know, please post it here.

Thank you so much!!

5

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