Using UPawnMovementComponent to control a Pawn with Keyboard

Development Programming & Scripting
1

I’ve just started to learn Unreal and reading the tutorial Components and Collisions I have found that they use the UPawnMovementComponent to control their Pawn.

Before reading this tutorial I have added the code to move the Pawn inside its C++ code:

#include "Paddle.h"
#include "Components/BoxComponent.h"
#include "Components/StaticMeshComponent.h"

// Sets default values
APaddle::APaddle()
{
 	// Set this pawn to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
	PrimaryActorTick.bCanEverTick = true;

	// Set this pawn to be controlled by the lowest-numbered player
	AutoPossessPlayer = EAutoReceiveInput::Player0;

	VisualComponent = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("VisualComp"));
	RootComponent = VisualComponent;

	// Removed for brevety

	CurrentVelocity.Z = 0.0f;

}

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

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

	// Handle movement based on our "MoveZ" axis.
	if (!CurrentVelocity.IsZero())
	{
		const FVector NewLocation = GetActorLocation() + (CurrentVelocity * DeltaTime);
		SetActorLocation(NewLocation);
	}

}

// Called to bind functionality to input
void APaddle::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
	Super::SetupPlayerInputComponent(PlayerInputComponent);

	// Respond every frame to the values of our movement.
	InputComponent->BindAxis(TEXT("MovePaddle"), this, &APaddle::Move_ZAxis);
}

void APaddle::Move_ZAxis(float AxisValue)
{
	CurrentVelocity.Z = FMath::Clamp(AxisValue, -1.0f, 1.0f) * 100.0f;
}

A Tip from that tutorial says:

Pawn Movement Components have some powerful, built-in features to help with common physics functionality, and are a good way to share movement code between many Pawn types. Using Components to separate functionality is a good practice to reduce clutter as your project grows and your Pawns become more complex.

They say that using Pawn Movement Components is a good way to share movement code between many Pawn but they have the same code than I inside their Pawn component:

// Copyright 1998-2018 Epic Games, Inc. All Rights Reserved.

#include "CollidingPawn.h"
#include "CollidingPawnMovementComponent.h"
#include "UObject/ConstructorHelpers.h"
#include "Particles/ParticleSystemComponent.h"
#include "Components/SphereComponent.h"
#include "Camera/CameraComponent.h"
#include "GameFramework/SpringArmComponent.h"

// Sets default values
ACollidingPawn::ACollidingPawn()
{
    // Set this pawn to call Tick() every frame.  You can turn this off to improve performance if you don't need it.
    PrimaryActorTick.bCanEverTick = true;

    // Removed for brevety

    // Take control of the default player
    AutoPossessPlayer = EAutoReceiveInput::Player0;

    // Create an instance of our movement component, and tell it to update our root component.
    OurMovementComponent = CreateDefaultSubobject<UCollidingPawnMovementComponent>(TEXT("CustomMovementComponent"));
    OurMovementComponent->UpdatedComponent = RootComponent;
}

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

}

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

}

// Called to bind functionality to input
void ACollidingPawn::SetupPlayerInputComponent(class UInputComponent* InInputComponent)
{
    Super::SetupPlayerInputComponent(InInputComponent);

    InInputComponent->BindAction("ParticleToggle", IE_Pressed, this, &ACollidingPawn::ParticleToggle);

    InInputComponent->BindAxis("MoveForward", this, &ACollidingPawn::MoveForward);
    InInputComponent->BindAxis("MoveRight", this, &ACollidingPawn::MoveRight);
    InInputComponent->BindAxis("Turn", this, &ACollidingPawn::Turn);
}

UPawnMovementComponent* ACollidingPawn::GetMovementComponent() const
{
    return OurMovementComponent;
}

void ACollidingPawn::MoveForward(float AxisValue)
{
    if (OurMovementComponent && (OurMovementComponent->UpdatedComponent == RootComponent))
    {
        OurMovementComponent->AddInputVector(GetActorForwardVector() * AxisValue);
    }
}

void ACollidingPawn::MoveRight(float AxisValue)
{
    if (OurMovementComponent && (OurMovementComponent->UpdatedComponent == RootComponent))
    {
        OurMovementComponent->AddInputVector(GetActorRightVector() * AxisValue);
    }
}

void ACollidingPawn::Turn(float AxisValue)
{
    FRotator NewRotation = GetActorRotation();
    NewRotation.Yaw += AxisValue;
    SetActorRotation(NewRotation);
}

void ACollidingPawn::ParticleToggle()
{
    if (OurParticleSystem && OurParticleSystem->Template)
    {
        OurParticleSystem->ToggleActive();
    }
}

They have the a SetupPlayerInputComponent method and three methods to move the Pawn inside the Pawn class. I don’t know how they are going to share move code between Pawn if the code is inside each Pawn.

How can I use UPawnMovementComponent to control a Pawn with Keyboard sharing that code with other Pawns?