虚幻C如何生成类到场景中，代码参考

在虚幻引擎中，可以通过以下步骤将一个类生成到场景中：

1. 创建一个Actor类或Blueprint类，可以在Content Browser中右键点击选择Create New，然后选择Actor或Blueprint。

2. 在编辑器中打开该类文件，添加你需要的组件和属性。

3. 在场景中右键点击选择添加Actor或Blueprint，选择你创建的类。

4. 在细节面板中设置该类的属性和位置等信息。

以下是一个简单的代码示例，可以在C++中生成一个Actor类到场景中：

// MyActor.h

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Actor.h"
#include "MyActor.generated.h"

UCLASS()
class MYPROJECT_API AMyActor : public AActor
{
    GENERATED_BODY()

public:
    // Sets default values for this actor's properties
    AMyActor();

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

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

private:
    UPROPERTY(EditAnywhere)
    UStaticMeshComponent* MeshComponent;
};

// MyActor.cpp

#include "MyActor.h"

// Sets default values
AMyActor::AMyActor()
{
    // 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;

    // Create a static mesh component and set it as the root component
    MeshComponent = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("MeshComponent"));
    RootComponent = MeshComponent;
}

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

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

}

在场景中添加该类可以通过以下代码实现：

// MyLevelScriptActor.cpp

#include "MyLevelScriptActor.h"
#include "MyActor.h"

AMyLevelScriptActor::AMyLevelScriptActor()
{
    PrimaryActorTick.bCanEverTick = false;
}

void AMyLevelScriptActor::BeginPlay()
{
    Super::BeginPlay();

    // Create an instance of MyActor and set its location
    FActorSpawnParameters SpawnParams;
    SpawnParams.Owner = this;
    AMyActor* MyActor = GetWorld()->SpawnActor<AMyActor>(AMyActor::StaticClass(), FVector(0.f, 0.f, 0.f), FRotator::ZeroRotator, SpawnParams);
}

当该Level Script Actor被创建时，它将在场景中生成一个MyActor类的实例，并将其位置设置为(0, 0, 0)。