官方案例《Player Input and Pawns》的错误
官方案例《Player Input and Pawns》的错误应为：UStaticMeshComponent*OurVisibleComponent;
本帖最后由 tzbm123456 于 2018-3-25 07:18 编辑
正确Player Input and Pawns原文：
一、MyPawn.h
// Fill out your copyright notice in the Description page of Project Settings.
#pragma once
#include "CoreMinimal.h"
#include "GameFramework/Pawn.h"
#include "MyPawn.generated.h"
UCLASS()
class HOWTO_PLAYERINPUT_API AMyPawn : public APawn
{
GENERATED_BODY()
public:
// Sets default values for this pawn's properties
AMyPawn();
protected:
// Called when the game starts or when spawned
virtual void BeginPlay() override;
public:
// Called every frame
virtual void Tick(float DeltaTime) override;
// Called to bind functionality to input
virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override;
UPROPERTY(EditAnywhere)
//USceneComponent* OurVisibleComponent;
UStaticMeshComponent* OurVisibleComponent;
void Move_XAxis(float AxisValue);
void Move_YAxis(float AxisValue);
void StartGrowing();
void StopGrowing();
FVector CurrentVelocity;
bool bGrowing;
};
二、MyPawn.cpp
// Fill out your copyright notice in the Description page of Project Settings.
#include "MyPawn.h"
#include "HowTo_PlayerInput.h"
#include "Runtime/Engine/Classes/Camera/CameraComponent.h"
// Sets default values
AMyPawn::AMyPawn()
{
// 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;
AutoPossessPlayer = EAutoReceiveInput::Player0;
// Create a dummy root component we can attach things to.
RootComponent = CreateDefaultSubobject<USceneComponent>(TEXT("RootComponent"));
// Create a camera and a visible object
UCameraComponent* OurCamera = CreateDefaultSubobject<UCameraComponent>(TEXT("OurCamera"));
//OurVisibleComponent = CreateDefaultSubobject<USceneComponent>(TEXT("OurVisibleComponent"));
OurVisibleComponent = CreateDefaultSubobject<UStaticMeshComponent>(TEXT("OurVisibleComponent"));
// Attach our camera and visible object to our root component. Offset and rotate the camera.
OurCamera->SetupAttachment(RootComponent);
OurCamera->SetRelativeLocation(FVector(-250.0f, 0.0f, 250.0f));
OurCamera->SetRelativeRotation(FRotator(-45.0f, 0.0f, 0.0f));
OurVisibleComponent->SetupAttachment(RootComponent);
}// Called when the game starts or when spawned
void AMyPawn::BeginPlay()
{
Super::BeginPlay();
}
// Called every frame
void AMyPawn::Tick(float DeltaTime)
{
Super::Tick(DeltaTime);
// Handle growing and shrinking based on our "Grow" action
float CurrentScale = OurVisibleComponent->GetComponentScale().X;
if (bGrowing)
{
// Grow to double size over the course of one second
CurrentScale += DeltaTime;
}
else
{
// Shrink half as fast as we grow
CurrentScale -= (DeltaTime * 0.5f);
}
// Make sure we never drop below our starting size, or increase past double size.
CurrentScale = FMath::Clamp(CurrentScale, 1.0f, 2.0f);
OurVisibleComponent->SetWorldScale3D(FVector(CurrentScale));
// Handle movement based on our "MoveX" and "MoveY" axes
if (!CurrentVelocity.IsZero())
{
FVector NewLocation = GetActorLocation() + (CurrentVelocity * DeltaTime);
SetActorLocation(NewLocation);
}
}
// Called to bind functionality to input
void AMyPawn::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent)
{
Super::SetupPlayerInputComponent(PlayerInputComponent);
// Respond when our "Grow" key is pressed or released.
InputComponent->BindAction("Grow", IE_Pressed, this, &AMyPawn::StartGrowing);
InputComponent->BindAction("Grow", IE_Released, this, &AMyPawn::StopGrowing);
// Respond every frame to the values of our two movement axes, "MoveX" and "MoveY".
InputComponent->BindAxis("MoveX", this, &AMyPawn::Move_XAxis);
InputComponent->BindAxis("MoveY", this, &AMyPawn::Move_YAxis);
}
void AMyPawn::Move_XAxis(float AxisValue)
{
// Move at 100 units per second forward or backward
CurrentVelocity.X = FMath::Clamp(AxisValue, -2.0f, 2.0f) * 100.0f;
}
void AMyPawn::Move_YAxis(float AxisValue)
{
// Move at 100 units per second right or left
CurrentVelocity.Y = FMath::Clamp(AxisValue, -2.0f, 2.0f) * 100.0f;
}
void AMyPawn::StartGrowing()
{
bGrowing = true;
}
void AMyPawn::StopGrowing()
{
bGrowing = false;
}
三、Input配置
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