动态加载类和资源：指在运行时加载
.cpp

void AMyActor::BeginPlay()
{Super::BeginPlay();//动态加载资源UStaticMesh* MyTempStaticMesh = LoadObject<UStaticMesh>(nullptr,TEXT("/Script/Engine.StaticMesh'/Game/StarterContent/Shapes/Shape_NarrowCapsule.Shape_NarrowCapsule'"));	//nullptr：空指针if (MyTempStaticMesh){MyMesh->SetStaticMesh(MyTempStaticMesh);}//动态加载类UClass* MyTempClass = LoadClass<AActor>(this,TEXT("/Script/Engine.Blueprint'/Game/StarterContent/Blueprints/Blueprint_WallSconce.Blueprint_WallSconce_C'"));	//AActor：Actor类型；this：指这段代码自身，相当于蓝图的selfif (MyTempClass){//就是SpawnActor蓝图节点GetWorld()->SpawnActor<AActor>(MyTempClass, FVector::ZeroVector, FRotator::ZeroRotator);	//缩放值不写默认为1。}
}

运行后：