UNREAL ENGINE V4.21：在构造函数调用 Character 期间未初始化组件

Question

我们尝试在角色的构造函数中初始化组件。该代码适用于 v4.15 但不适用于 v4.21。

这是我们的代码（分别是.h文件和.cpp文件）：

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Character.h"
#include "MainCharacter.generated.h"

UCLASS()
class VRET_API AMainCharacter : public ACharacter
{
    GENERATED_BODY()

public:
    // Sets default values for this character's properties
    AMainCharacter();


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

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

    // Called to bind functionality to input
    virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;

private:
    UPROPERTY()
    class UCameraComponent * camera;
    UPROPERTY()
    class USceneComponent * VRroot;
};

---

#include "MainCharacter.h"
#include "Camera/CameraComponent.h"
#include "MotionControllerComponent.h"
#include "Runtime/Engine/Classes/Components/StaticMeshComponent.h"
#include "Runtime/CoreUObject/Public/UObject/ConstructorHelpers.h"

// Sets default values
AMainCharacter::AMainCharacter()
{

    // 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;
    VRroot = CreateDefaultSubobject<USceneComponent>(TEXT("VRroot"));
    VRroot->SetupAttachment(GetRootComponent());
    camera = CreateDefaultSubobject<UCameraComponent>(TEXT("Camera"));
    camera->SetupAttachment(VRroot);

}

代码可以编译，但是当我们运行游戏时，我们的角色组件没有被初始化，并且在游戏过程中我们无法在编辑器中找到它们，但是默认的角色组件（例如：胶囊组件）可以正常工作并显示。

Answer 1

这发生在我身上。尝试将您的蓝图类从 AMainCharacter 取消父级到 ACharacter，然后再次将其从 AMainCharacter 父级。 它对我有用！