Questions about SetUpPlayerInputComponent()

Development Programming & Scripting
1

Im Currious to know why the code works this way? So I have two Questions on the behaviour of it

#1. Is SetupPlayerInputComponent() Called before BeginPlay() .

Because I was trying to add a bIsDead boolean in SetupPlayerInputComponent() before PlayerInputComponent BindAction() or BindAxis() & it would only return nullptr

Note that bIsDead is being stored in my PlayerController class (Makes sense for my game design)

Code for Question #1:

.h

private:

class AGW_PlayerController* GW_PlayerController;

.cpp

// #include for AGW_PlayerController is @ top of file

void ACharacterBase::BeginPlay()

{
Super::BeginPlay();

GW_PlayerController = Cast<AGW_PlayerController>(GetController());

UE_LOG(LogTemp, Warning, TEXT("Controller Is : %s"), *GetController()->GetActorNameOrLabel());

}

void ACharacterBase::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)

{

Super::SetupPlayerInputComponent(PlayerInputComponent);

// Set up gameplay key bindings

check(PlayerInputComponent);

// Early Return if Player is Dead = true

if (GW_PlayerController == nullptr) { return; }

if (GW_PlayerController->bIsDead) { return; }

// Bind jump events

PlayerInputComponent->BindAction("Jump", IE_Pressed, this, &ACharacter::Jump);

PlayerInputComponent->BindAction("Jump", IE_Released, this, &ACharacter::StopJumping);

// Bind movement events

PlayerInputComponent->BindAxis("Move Forward / Backward", this, &ACharacterBase::MoveForward);

PlayerInputComponent->BindAxis("Move Right / Left", this, &ACharacterBase::MoveRight);

PlayerInputComponent->BindAxis("Turn Right / Left Mouse", this, &ACharacterBase::TurnRight);

PlayerInputComponent->BindAxis("Look Up / Down Mouse", this, &ACharacterBase::LookUp);

PlayerInputComponent->BindAction("Sprint", IE_Pressed, this, &ACharacterBase::StartSprinting);

PlayerInputComponent->BindAction("Sprint", IE_Released, this, &ACharacterBase::StopSprinting);
}

Question #2 is more of an add on to Question #1

#2. Why does Moving bIsDead to character class work only sort of?

When moving this code into Character class from playerController Class.

.h

UPROPERTY(EditAnywhere, BlueprintReadWrite)

bool bIsDead = false;

And changing.

.cpp

if (bIsDead) { return; }

Why does it only work when setting bIsDead true before playing in editor. Whereas if I try and turn it true while playing it doesn’t work?

I did end up getting question #1 to work by moving

if (GW_PlayerController && GW_PlayerController == nullptr) { return; }

into each the main movement function in SetupPlayerInputComponent()

e.g.

void ACharacterBase::LookUp(float Value)
{

if (GW_PlayerController && GW_PlayerController->bIsDead) { return; }
AddControllerPitchInput(Value * MouseSens * GetWorld()->GetDeltaSeconds());
}

void ACharacterBase::TurnRight(float Value)
{
if (GW_PlayerController && GW_PlayerController->bIsDead) { return; }
AddControllerYawInput(Value * MouseSens * GetWorld()->GetDeltaSeconds());
}
2

In short, Yes SetupPlayerInputComponent() does run before BeginPlay().

“Allows a Pawn to set up custom input bindings. Called upon possession by a PlayerController, using the InputComponent created by CreatePlayerInputComponent()”

That taken from the remarks at bottom of APawn::SetupPlayerInputComponent | Unreal Engine Documentation

Possession runs before BeginPlay()
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