Mesh is private member

Development Programming & Scripting
1

by default everything in your class is private.

You need to set its Access Specifier.

Those private, protected, or public you see in header files.

MeleeWeapon.h:

 class Monster;
 Class AMeleeWeapon
 {
 ...
public:

    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category= "MeleeWeapon")
    UStaticMeshComponent *Mesh;
 ...
 };

adding the public will let you access the Mesh from anywhere.

Quick breakdown of the 3:

  • public: Can be accessed from anywhere you can get a ref to this class
  • private: Even with a ref to this class these won’t show.
  • protected: Private but accessible from Child Classes.
2

Yes, thanks, I’m sorry, that is my fault , insufficient information about the problem,
I updated the information

3

Maybe you can try to help me again?

4

Maybe somebody can help me?
Mistake: ‘Mesh’ is a private member of ‘ACharacter’

“Learning c++ by creating games with ue4” book

//MeleeWeapon.h:

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "Monster.h"
#include "Runtime/Engine/Classes/Components/StaticMeshComponent.h"
#include "Runtime/Engine/Classes/Components/BoxComponent.h"
#include "Runtime/Engine/Classes/Components/PrimitiveComponent.h"
#include "MeleeWeapon.generated.h"

class AMonster;
UCLASS()
class NONAME_API AMeleeWeapon : public AActor
{
GENERATED_BODY()
public:	
	// Sets default values for this actor's properties

    AMeleeWeapon();
    AMeleeWeapon(const class FObjectInitializer& PCIP);

protected:
	// Called when the game starts or when spawned
	virtual void BeginPlay() override;

public:	
	// Called every frame
	virtual void Tick(float DeltaTime) override;

	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category= "MeleeWeapon")
    float AttackDamage;
    TArray<AActor*> ThingsHit;
    bool Swinging;
    AMonster *WeaponHolder;
	
    UPROPERTY(VisibleDefaultsOnly, BlueprintReadWrite, Category= "MeleeWeapon")
    UBoxComponent *ProxBox;
    
    UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category= "MeleeWeapon")
    UStaticMeshComponent *Mesh;
    
    UFUNCTION(BlueprintNativeEvent, Category = "Collision")
    void Prox( class UPrimitiveComponent* HitComp, class AActor* OtherActor, UPrimitiveComponent* OtherComp, int32 OtherBodyIndex, bool bFromSweep, const FHitResult &  SweepResult );
    
    void Swing();
    void Rest();
};


//Monster.cpp:



#include "Monster.h"
#include "Avatar.h"
#include "Runtime/CoreUObject/Public/UObject/UObjectGlobals.h"
#include "Runtime/Engine/Classes/Kismet/GameplayStatics.h"
#include "Runtime/Engine/Classes/Engine/SkeletalMeshSocket.h"
#include "Runtime/Engine/Classes/Components/StaticMeshComponent.h"
#include "MeleeWeapon.h"

// Sets default values

AMonster::AMonster()
{
    // Set this character to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
    PrimaryActorTick.bCanEverTick = true;
    
}


void AMonster:: PostInitializeComponents()
{
    Super:: PostInitializeComponents();
    
    if(BPMeleeWeapon)
    {
        MeleeWeapon=GetWorld()->SpawnActor<AMeleeWeapon>(BPMeleeWeapon, FVector(),FRotator());
        
        if(MeleeWeapon)
        {
            const USkeletalMeshSocket *socket=Mesh->GetSocketByName("ik_hand_rSocket"); //MISTAKE
            socket->AttachActor(MeleeWeapon, Mesh ); //MISTAKE
        }
    }
}
5

I see you’re declaring the UStaticMeshComponent in the .h, But are you actually creating the component anywhere?

Because you seem to be trying to access an empty pointer.

6

Sorry, my English isn’t good, but maybe you ask about this:

MeleeWeapon.cpp:

…

Mesh = PCIP.CreateDefaultSubobject(this, TEXT(“Mesh”)); RootComponent = Mesh;

…

That all from “Learning c++ by creating games with ue4” book, I’m just trying to repeat

7

The “Mesh” variable you are trying to access is not the one from the weapon but of the character so you should use GetMesh(); if you want to access the one from the weapon you should use “MeleeWeapon->Mesh” ( but i think thats nit the case )

8

Thank you!