[C++과 Unreal Engine으로 3D 게임 개발] 동작 구현과 입력 처리

Character 클래스에 액션 바인딩 추가

#pragma once

...

struct FInputActionValue;

UCLASS()
class SPARTAPROJECT_API ASpartaCharacter : public ACharacter
{
	GENERATED_BODY()

public:
	ASpartaCharacter();

protected:
	...;

	UFUNCTION()
	void Move(const FInputActionValue& value);
	UFUNCTION()
	void StartJump(const FInputActionValue& value);
	UFUNCTION()
	void StopJump(const FInputActionValue& value);
	UFUNCTION()
	void Look(const FInputActionValue& value);
	UFUNCTION()
	void StartSprint(const FInputActionValue& value);
	UFUNCTION()
	void StopSprint(const FInputActionValue& value);
};

...
#include "EnhancedInputComponent.h"

...

ASpartaCharacter::ASpartaCharacter()
{
	...
}

void ASpartaCharacter::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
	Super::SetupPlayerInputComponent(PlayerInputComponent);

	if (UEnhancedInputComponent* EnhancedInput = Cast<UEnhancedInputComponent>(PlayerInputComponent))
	{
		if (ASpartaPlayerController* PlayerController = Cast<ASpartaPlayerController>(GetController()))
		{
			if (PlayerController->MoveAction)
			{
				EnhancedInput->BindAction(
					PlayerController->MoveAction,
					ETriggerEvent::Triggered,
					this,
					&ASpartaCharacter::Move
				);
			}

			if (PlayerController->JumpAction)
			{
				EnhancedInput->BindAction(
					PlayerController->JumpAction,
					ETriggerEvent::Triggered,
					this,
					&ASpartaCharacter::StartJump
				);

				EnhancedInput->BindAction(
					PlayerController->JumpAction,
					ETriggerEvent::Completed,
					this,
					&ASpartaCharacter::StopJump
				);
			}

			if (PlayerController->LookAction)
			{
				EnhancedInput->BindAction(
					PlayerController->LookAction,
					ETriggerEvent::Triggered,
					this,
					&ASpartaCharacter::Look
				);
			}

			if (PlayerController->SprintAction)
			{
				EnhancedInput->BindAction(
					PlayerController->SprintAction,
					ETriggerEvent::Triggered,
					this,
					&ASpartaCharacter::StartSprint
				);

				EnhancedInput->BindAction(
					PlayerController->SprintAction,
					ETriggerEvent::Completed,
					this,
					&ASpartaCharacter::StopSprint
				);
			}
		}
	}
}

void ASpartaCharacter::Move(const FInputActionValue& value)
{

}

void ASpartaCharacter::StartJump(const FInputActionValue& value)
{

}

void ASpartaCharacter::StopJump(const FInputActionValue& value)
{

}

void ASpartaCharacter::Look(const FInputActionValue& value)
{

}

void ASpartaCharacter::StartSprint(const FInputActionValue& value)
{

}

void ASpartaCharacter::StopSprint(const FInputActionValue& value)
{

}

 

캐릭터 이동 함수 구현

void ASpartaCharacter::Move(const FInputActionValue& value)
{
	if (!Controller) return;

	const FVector2D MoveInput = value.Get<FVector2D>();

	if (!FMath::IsNearlyZero(MoveInput.X))
	{
		AddMovementInput(GetActorForwardVector(), MoveInput.X);
	}

	if (!FMath::IsNearlyZero(MoveInput.Y))
	{
		AddMovementInput(GetActorRightVector(), MoveInput.Y);
	}
}

 

캐릭터 점프 함수 구현

void ASpartaCharacter::StartJump(const FInputActionValue& value)
{
	if (value.Get<bool>())
	{
		Jump();
	}
}

void ASpartaCharacter::StopJump(const FInputActionValue& value)
{
	if (!value.Get<bool>())
	{
		StopJumping();
	}
}

 

캐릭터 기본 시점 회전 구현

void ASpartaCharacter::Look(const FInputActionValue& value)
{
	FVector2D LookInput = value.Get<FVector2D>();

	AddControllerYawInput(LookInput.X);
	AddControllerPitchInput(LookInput.Y);
}

 

스프린트 동작 구현

#pragma once

...

UCLASS()
class SPARTAPROJECT_API ASpartaCharacter : public ACharacter
{
	...

protected:
	...
	
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Movement")
	float NormalSpeed;
	UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Movement")
	float SprintSpeedMultiplier;
	UPROPERTY(VisibleAnywhere, BlueprintReadOnly, Category = "Movement")
	float SprintSpeed;

	...
};

...
#include "GameFramework/CharacterMovementComponent.h"

ASpartaCharacter::ASpartaCharacter()
{
	...

	NormalSpeed = 600.0f;
	SprintSpeedMultiplier = 1.5f;
	SprintSpeed = NormalSpeed * SprintSpeedMultiplier;

	GetCharacterMovement()->MaxWalkSpeed = NormalSpeed;
}

...

void ASpartaCharacter::StartSprint(const FInputActionValue& value)
{
	if (GetCharacterMovement())
	{
		GetCharacterMovement()->MaxWalkSpeed = SprintSpeed;
	}
}

void ASpartaCharacter::StopSprint(const FInputActionValue& value)
{
	if (GetCharacterMovement())
	{
		GetCharacterMovement()->MaxWalkSpeed = NormalSpeed;
	}
}