Replicate Weapon in multiplayer

Development Programming & Scripting
1

Hi guys,

I’ve got a problem with my weapons display.
I’m trying to make a system similar that in PUBG with two main weapons, primary and secondary.
When one is use, attached to hands I call it CurrentWeapon, and the other one should be attach in the back .
My system works on the server but not on the clients where weapons don’t show up for others people.

Can you help me ?

2

Here is my code
header

/** currently equipped weapon */
	UPROPERTY(BluePrintReadWrite,Transient, Replicated/*Using = OnRep_CurrentWeapon*/)
		class ABaseWeapon* CurrentWeapon;

	UPROPERTY(BluePrintReadWrite,Transient, ReplicatedUsing = OnRep_PrimaryWeapon)
		class ABaseWeapon* PrimaryWeapon;

	UPROPERTY(BluePrintReadWrite,Transient, ReplicatedUsing = OnRep_SecondaryWeapon )
		class ABaseWeapon* SecondaryWeapon;


	//utilisé pour équiper une arme depuis l'inventaire
	UFUNCTION(BlueprintCallable, Category = Inventory)
		void EquipWeapon( EWeaponSlot  WeaponSlot);


	/** equip weapon */
	UFUNCTION(reliable, server, WithValidation)
		void 	ServerEquipWeapon( EWeaponSlot weaponslot);
	

	void UnequipWeapon(ABaseWeapon* WeaponToUnequip);


/** current weapon rep handler */
	UFUNCTION()
	void OnRep_PrimaryWeapon(class ABaseWeapon* LastWeapon);

	UFUNCTION()
	void OnRep_SecondaryWeapon(class ABaseWeapon* LastWeapon);

	//Pour accrocher une arme au socket de la main
	void AttachToHand(APickable* WeaponToEquip);

	//pour accrocher une arme à un socket sur le corps
	void AttachToBody(APickable* WeaponToEquip, EWeaponSlot SocketToEquip);

	FName GetSocket(EWeaponSlot SocketToGet);
3

void ABaseCharacter::EquipWeapon(EWeaponSlot weaponslot)
{

	if (Role == ROLE_Authority)
	{
		if (CurrentWeapon != NULL)
		{
			UnequipWeapon(CurrentWeapon);
		}
		IsEquiping = true;

		switch (weaponslot)
		{
			case (EWeaponSlot::Primary):
				if (PrimaryWeapon != NULL)
				{
					CurrentWeapon = PrimaryWeapon;
					AttachToHand(CurrentWeapon);
					
					CurrentWeapon->OnEquip(CurrentWeapon);

				}
				OnEquipFinish();
				break;

			case (EWeaponSlot::Secondary):
				if (SecondaryWeapon != NULL)
				{
					CurrentWeapon = SecondaryWeapon;
					AttachToHand(CurrentWeapon);
					
					CurrentWeapon->OnEquip(CurrentWeapon);
					
					
				}
				OnEquipFinish();
				break;

			case (EWeaponSlot::SideGun):
				if (SideGun != NULL)
				{
					CurrentWeapon = SideGun;
					AttachToHand(CurrentWeapon);
					CurrentWeapon->OnEquip(CurrentWeapon);
					
				}
				OnEquipFinish();
				break;
		}
	}

	
	//if role isn't autorithy
	else
	{
		/*if (CurrentWeapon != NULL)
		{
			UnequipWeapon(CurrentWeapon);
		}*/

		ServerEquipWeapon(weaponslot);

	}
}

bool ABaseCharacter::ServerEquipWeapon_Validate(EWeaponSlot weaponslot)
{
	//GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Blue, TEXT("true , serverequipweaponvalidate"));

	return true;
}

void ABaseCharacter::ServerEquipWeapon_Implementation( EWeaponSlot weaponslot)
{
	//weipweapon with autority"));
	EquipWeapon (weaponslot);
}


void ABaseCharacter::UnequipWeapon(ABaseWeapon* WeaponToUnequip)
{
	if (CurrentWeapon != NULL)
	{
		//CurrentWeapon->OnUnEquip();
		AttachToBody(WeaponToUnequip, WeaponToUnequip->CurrentSlot);
	
		CurrentWeapon = NULL;
	}
}


void ABaseCharacter::AttachToHand(APickable* WeaponToEquip)
{
	
	FName AttachPoint= GetWeaponAttachPoint();	
	WeaponToEquip->Mesh1P->SetHiddenInGame(false);
	
	WeaponToEquip->Mesh3P->SetHiddenInGame(false);
	WeaponToEquip->Mesh1P->AttachToComponent(Mesh1P, FAttachmentTransformRules::SnapToTargetNotIncludingScale, AttachPoint);
	WeaponToEquip->Mesh3P->AttachToComponent(GetMesh(), FAttachmentTransformRules::SnapToTargetNotIncludingScale, AttachPoint);

	//on s'assure que l'arme soit bien en place sur chaque mesh
	WeaponToEquip->Mesh3P->SetRelativeTransform(WeaponToEquip->TpsSocket);
	WeaponToEquip->Mesh1P->SetRelativeTransform(WeaponToEquip->FpsSocket);





}


void ABaseCharacter::AttachToBody(APickable* WeaponToEquip, EWeaponSlot SocketToEquip)
{
	FName AttachPoint = GetSocket(SocketToEquip);
	WeaponToEquip->Mesh1P->SetHiddenInGame(true);
	WeaponToEquip->Mesh3P->SetHiddenInGame(false);
	//WeaponToEquip->Mesh1P->AttachToComponent(Mesh1P, FAttachmentTransformRules::KeepRelativeTransform, AttachPoint);
	WeaponToEquip->Mesh3P->AttachToComponent(GetMesh(), FAttachmentTransformRules::SnapToTargetNotIncludingScale, AttachPoint);
	WeaponToEquip->Mesh3P->SetRelativeTransform(WeaponToEquip->GetSocket(SocketToEquip));
	
}


FName ABaseCharacter::GetSocket(EWeaponSlot SocketToGet)
{
	FName Socket;
		switch (SocketToGet) 
		{
		case (EWeaponSlot::Primary):
			Socket = PrimaryAttachPoint;
				break;

		case (EWeaponSlot::Secondary):
			Socket = SecondaryAttachPoint;
			break;

		case (EWeaponSlot::SideGun):
			Socket = SideGunAttachPoint;
			break;
		}

		return Socket;
}
4

Surprising that no body ever replied.