How to attach weapon to different mesh on replicated server

Development Programming & Scripting
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2

So If ever someone have the same issues, or is asking for the same question, I’ve finally went the weapon have 2 meshes. 1 for ThirdPerson, and 1 for FirstPerson. I then, attach the Firstperson one when is locally controlled ( just for optimization I guess).

Combat Component.cpp:


void UCombatComponent::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const
{
	Super::GetLifetimeReplicatedProps(OutLifetimeProps);
	DOREPLIFETIME(UCombatComponent, EquippedWeapon);
}




void UCombatComponent::ClientEquippedWeaponOnMesh() const
{
	if (EquippedWeapon && Character)
	{
		if (Character->IsLocallyControlled())
		{
			if (const USkeletalMeshSocket* HandSocket = Character->GetFirstPersonMesh()->GetSocketByName(EquippedWeapon->GetHandSocketName()))
			{
				EquippedWeapon->AttachToComponent(Character->GetFirstPersonMesh(), FAttachmentTransformRules::SnapToTargetNotIncludingScale, EquippedWeapon->GetHandSocketName());
			}
		}
	}
}

void UCombatComponent::OnRep_EquippedWeapon()
{
	ClientEquippedWeaponOnMesh();
}


UFUNCTION()
void ClientEquippedWeaponOnMesh() const;

UFUNCTION()
void OnRep_EquippedWeapon();

UPROPERTY(ReplicatedUsing= OnRep_EquippedWeapon)
AWeapon* EquippedWeapon;



Weapon.h


UPROPERTY(VisibleAnywhere, Category = "Weapon Properties")
USkeletalMeshComponent* WeaponMesh;

UPROPERTY(VisibleAnywhere, Category = "Weapon Properties")
USkeletalMeshComponent* FirstPersonWeaponMesh;

UPROPERTY(VisibleAnywhere, Category = "Weapon Properties")
USkeletalMeshComponent* ThirdPersonWeaponMesh;


Weapon.cpp


    AWeapon::AWeapon()
    {
	   bReplicates = true;
	   InitializeWeaponMesh();
    }

    void AWeapon::InitializeWeaponMesh()
    {
	  WeaponMesh = CreateDefaultSubobject<USkeletalMeshComponent>(TEXT("WeaponMesh"));

	  FirstPersonWeaponMesh = CreateDefaultSubobject<USkeletalMeshComponent>(TEXT("FirstPersonWeaponMesh"));
	  FirstPersonWeaponMesh->SetupAttachment(RootComponent);
	  FirstPersonWeaponMesh->SetOnlyOwnerSee(true); // Only visible to owning player

	  ThirdPersonWeaponMesh = CreateDefaultSubobject<USkeletalMeshComponent>(TEXT("ThirdPersonWeaponMesh"));
	  ThirdPersonWeaponMesh->SetupAttachment(RootComponent);
	  ThirdPersonWeaponMesh->SetOwnerNoSee(true); // Not visible to owning player


	  FirstPersonWeaponMesh->SetSkeletalMesh(WeaponMesh->GetSkeletalMeshAsset());
	  ThirdPersonWeaponMesh->SetSkeletalMesh(WeaponMesh->GetSkeletalMeshAsset());

	  SetRootComponent(WeaponMesh);

	  WeaponMesh->SetCollisionResponseToAllChannels(ECR_Block);
	  WeaponMesh->SetCollisionResponseToChannel(ECC_Pawn, ECR_Ignore);
	  WeaponMesh->SetCollisionEnabled(ECollisionEnabled::NoCollision);
    }
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