设置摇臂和相机

变量名可以变更

在.h文件中写：

UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category="Camera", meta=(AllowPrivateAccess = "true"))
class UCameraComponent* FollowCamera;

UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category="Camera", meta=(AllowPrivateAccess = "true"))
class USpringArmComponent* CameraBoom;

在.cpp文件中写：

// 相机臂
CameraBoom = CreateDefaultSubobject<USpringArmComponent>(TEXT("CameraBoom"));
CameraBoom->SetupAttachment(RootComponent);
CameraBoom->TargetArmLength = 400.0f;
CameraBoom->bUsePawnControlRotation = true;

// 相机
FollowCamera = CreateDefaultSubobject<UCameraComponent>(TEXT("FollowCamera"));
FollowCamera->SetupAttachment(CameraBoom, USpringArmComponent::SocketName);
FollowCamera->bUsePawnControlRotation = false;