USkeletalSocketComponent not allowing actor to be attached to it

Development Programming & Scripting C++
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1

Hi Guys,

I’ve been trying to attach a weapon to my AI, I’ve created the socket on the skeletal mesh. The line where I attach the weapon to the AI’s hand is throwing an error.

**Goblin.cpp**

    void AGoblin::PostInitializeComponents()
    {
    	Super::PostInitializeComponents();
    
    	//instantiate the melee weapon if a bp was selected
    	if (BPMeleeWeapon)
    	{
    		MeleeWeapon = GetWorld()->SpawnActor<AMeleeWeapon>(BPMeleeWeapon, FVector(), FRotator());
    
    		if (MeleeWeapon)
    		{
    			const USkeletalMeshSocket *socket = Mesh->GetSocketByName("MeleeWeaponSocket");
------------>       socket->AttachActor(MeleeWeapon, Mesh); //ERROR here
    		}
    	}
    }

The error is:

**error C2227: left of ‘->AttachActor’ must point to class/struct/union/generic type **
error C2027: use of undefined type 'USkeletalMeshSocket’

My Weapon Actor code is as follows:

MeleeWeapon.cpp

// Fill out your copyright notice in the Description page of Project Settings.

#include "Magii.h"
#include "MeleeWeapon.h"


// Sets default values
AMeleeWeapon::AMeleeWeapon(const FObjectInitializer& ObjectInitializer)
	: Super(ObjectInitializer)
{
 	// Set this actor to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

	AttackDamage = 1;
	bSwinging = false;
	WeaponHolder = NULL;

	Mesh = ObjectInitializer.CreateDefaultSubobject<UStaticMeshComponent>(this, TEXT("Mesh"));
	RootComponent = Mesh;

	ProxBox = ObjectInitializer.CreateDefaultSubobject<UBoxComponent>(this, TEXT("ProxBox"));
	ProxBox->OnComponentBeginOverlap.AddDynamic(this, &AMeleeWeapon::Prox);
	ProxBox->AttachTo(RootComponent);
}

// Called when the game starts or when spawned
void AMeleeWeapon::BeginPlay()
{
	Super::BeginPlay();
	
}

// Called every frame
void AMeleeWeapon::Tick( float DeltaTime )
{
	Super::Tick( DeltaTime );

}

void AMeleeWeapon::Prox_Implementation(AActor* OtherActor, UPrimitiveComponent* OtherComp, 
	 int32 OtherBodyIndex, bool bFromSweep, const FHitResult &SweepResult)
{
	//dont hit non root components
	if (OtherComp != OtherActor->GetRootComponent())
	{
		return;
	}

	//avoid hitting things while sword isnt swinging
	//avoid hitting yourself
	//avoid hitting OtherActor twice
	if (bSwinging && OtherActor != WeaponHolder && !ThingsHit.Contains(OtherActor))
	{
		OtherActor->TakeDamage(AttackDamage + WeaponHolder->BaseAttackDamage, FDamageEvent(), NULL, this);
		ThingsHit.Add(OtherActor);
	}
}

void AMeleeWeapon::Swing()
{
	ThingsHit.Empty();
	bSwinging = true;
}

void AMeleeWeapon::Rest()
{
	ThingsHit.Empty();
	bSwinging = false;
}

Has anyone encountered this before or has a possible alternative?

Thank you

2

Try adding the following header to your .cpp file:

#include "SkeletalMeshSocket.h"

Hopefully that works. =)

3

Thank you! At first it didnt find it, but #include "Engine/SkeletalMeshSocket.h" did the trick!