UChildActorComponent的ChildActorClass中的Access函数

Question

好的，所以在UE4上我试图制作一个UChildActorComponent作为玩家的武器。但是当我去APlayerWeapon类中调用一个函数时，它说：

错误：'UChildActorComponent'中没有名为'Shoot'的成员

这是我用来初始化武器的代码：

void ABaseCharacter::CreatePlayerWeapon()
{
    //Create the weapon actor as a UChildActorComponent
    Weapon = CreateDefaultSubobject<UChildActorComponent>(TEXT("PlayerWeapon"));
    Weapon->SetChildActorClass(WeaponClass);
    Weapon->CreateChildActor();

    //Attach it at the socket called "GunSocket" that I created on the right hand
    Weapon->SetupAttachment(GetMesh(), FName("GunSocket"));
}

然后在SetupPlayerInputComponent函数中，我使用它来尝试将“Shoot（）”绑定到空格键（在游戏设置中设置为输入）：

InputComponent->BindAction("Shoot", IE_Pressed, this, Weapon->Shoot());

以下是ABaseCharacter头文件中的相关代码行：

UPROPERTY(VisibleDefaultsOnly)
    class UChildActorComponent* Weapon;


UPROPERTY(VisibleAnywhere, Category = "Base Character")
    TSubclassOf<class APlayerWeapon> WeaponClass;

然后是APlayerWeapon类的相关代码行：

void APlayerWeapon::Shoot()
{
    UE_LOG(LogTemp, Error, TEXT("Shooting"));
}

tldr;如果武器当前是ChildActorComponent，如何从APlayerWeapon访问Shoot（）函数？

Answer 1

找出如何解决这个问题。您只需要获取子actor，然后转换为子actor类。然后你就可以调用这个函数了。

((APlayerWeapon *)Weapon->GetChildActor())->Shoot();