【UE4 C++】 獲取Actor、Controller、Pawn、Character

獲取 Actor

TActorIterator 遍歷

• 可以用於遍歷 Actor，也可以用於遍歷 Component

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

UKismetSystemLibrary::GetAllActorsOfClass

• Syntax

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

• 代碼實現

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

UKismetSystemLibrary::GetAllActorsWithTag

• Syntax

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

UKismetSystemLibrary::GetAllActorsWithInterface

• Syntax

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

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獲取 Controller

可配合 Cast 轉換成對應的 Controller

UKismetSystemLibrary::GetPlayerController

• Syntax

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

• 代碼實現

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

UWorld::GetFirstPlayerController

• 代碼實現

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

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獲取 Pawn

UKismetSystemLibrary::GetPlayerPawn

• 代碼實現

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

GetPawn

• 代碼實現

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

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獲取 Character

UGameplayStatics::GetPlayerCharacter

• 代碼實現

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

GetCharacter

• 代碼實現

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