获取 Actor

• 可以用于遍历 Actor，也可以用于遍历 Component

  for (TActorIterator<AStaticMeshActor> ActorIter(GetWorld()); ActorIter; ++ActorIter)
  {
      UKismetSystemLibrary::PrintString(GetWorld(), FString::Printf(TEXT("%s"), *ActorIter->GetName()));
  }

• Syntax

  static void GetAllActorsOfClass(const UObject* WorldContextObject, TSubclassOf<AActor> ActorClass, TArray<AActor*>& OutActors);

• 代码实现

  TArray<AActor*> OutActors;
  UGameplayStatics::GetAllActorsOfClass(GetWorld(), AStaticMeshActor::StaticClass(), OutActors);
  for (AActor* actor : OutActors)
  {
  UKismetSystemLibrary::PrintString(GetWorld(), actor->GetName());
  }

• Syntax

  static void GetAllActorsWithTag(const UObject* WorldContextObject, FName Tag, TArray<AActor*>& OutActors);

• Syntax

  static void GetAllActorsWithInterface(const UObject* WorldContextObject, TSubclassOf<UInterface> Interface, TArray<AActor*>& OutActors);

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获取 Controller

可配合 Cast 转换成对应的 Controller

• Syntax

  static class APlayerController* GetPlayerController(const UObject* WorldContextObject, int32 PlayerIndex);

• 代码实现

  APlayerController* playerController = UGameplayStatics::GetPlayerController(GetWorld(), 0);

• 代码实现

  APlayerController* playerController = GetWorld()->GetFirstPlayerController();

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获取 Pawn

• 代码实现

  APawn* myPawn = Cast<ADrone>(UGameplayStatics::GetPlayerPawn(GetWorld(), 0));

• 代码实现

  APawn* myPawn = GetWorld()->GetFirstPlayerController()->GetPawn();

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获取 Character

• 代码实现

  ACharacter* myPawn = UGameplayStatics::GetPlayerCharacter(GetWorld(), 0);

• 代码实现

  ACharacter* myPawn = GetWorld()->GetFirstPlayerController()->GetCharacter();