新建一个基于C++的工程MyProject,默认会创建游戏模式类AMyProjectGameModeBase，如果自己没有创建Pawn，DefaultPawnClass就会默认为ADefaultPawn类，打包后会出现一些问题。比如想按下鼠标左键沿X轴或者Y轴旋转，代码做了相应操作，结果却会不按下鼠标左键就会旋转，不是我们想要的。自己写一个Pawn好控制些。这里只做一些简单的操控，鼠标左键按下可以左右、上下翻转，鼠标滚轮滚动可以拉远拉近。
AManipulator.h
#pragma once #include "GameFramework/Pawn.h" #include "Manipulator.generated.h" UCLASS() class MYPROJECT_API AManipulator : public APawn { GENERATED_UCLASS_BODY() public: // Sets default values for this pawn's properties AManipulator(); 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; virtual UPawnMovementComponent* GetMovementComponent() const override; virtual void UpdateNavigationRelevance() override; virtual void MouseX(float Val); virtual void MouseY(float Val); virtual void MouseScrollUp(); virtual void MouseScrollDown(); protected: float BaseTurnRate; float BaseSpeed; UPawnMovementComponent* MovementComponent; USphereComponent* CollisionComponent; };
AManipulator.cpp #include "MyProject.h" #include "Manipulator.h" void InitializeInputBindings() { static bool bBindingsAdded = false; if (!bBindingsAdded) { bBindingsAdded = true; UPlayerInput::AddEngineDefinedAxisMapping(FInputAxisKeyMapping("Manipulator_MouseX", EKeys::MouseX, 1.f)); UPlayerInput::AddEngineDefinedAxisMapping(FInputAxisKeyMapping("Manipulator_MouseY", EKeys::MouseY, -1.f)); UPlayerInput::AddEngineDefinedActionMapping(FInputActionKeyMapping("Manipulator_MouseScrollUp", EKeys::MouseScrollUp)); UPlayerInput::AddEngineDefinedActionMapping(FInputActionKeyMapping("Manipulator_MouseScrollDown", EKeys::MouseScrollDown)); } } AManipulator::AManipulator(const FObjectInitializer& ObjectInitializer) : Super(ObjectInitializer) { PrimaryActorTick.bCanEverTick = true; BaseTurnRate = 45.f; CollisionComponent = CreateDefaultSubobject<USphereComponent>(FName(TEXT("CollisionComponent0"))); CollisionComponent->InitSphereRadius(5.0f); CollisionComponent->SetCollisionProfileName(UCollisionProfile::Pawn_ProfileName); CollisionComponent->CanCharacterStepUpOn = ECB_No; CollisionComponent->bShouldUpdatePhysicsVolume = true; CollisionComponent->SetCanEverAffectNavigation(false); CollisionComponent->bDynamicObstacle = true; RootComponent = CollisionComponent; MovementComponent = CreateDefaultSubobject<UPawnMovementComponent, USpectatorPawnMovement>(FName(TEXT("MovementComponent0"))); MovementComponent->UpdatedComponent = CollisionComponent; this->BaseEyeHeight = 2.0; } void AManipulator::BeginPlay() { Super::BeginPlay(); } void AManipulator::Tick(float DeltaTime) { Super::Tick(DeltaTime); } void AManipulator::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent) { check(PlayerInputComponent); InitializeInputBindings(); PlayerInputComponent->BindAxis("Manipulator_MouseX", this, &AManipulator::MouseX); PlayerInputComponent->BindAxis("Manipulator_MouseY", this, &AManipulator::MouseY); PlayerInputComponent->BindAction("Manipulator_MouseScrollUp", IE_Pressed, this, &AManipulator::MouseScrollUp); PlayerInputComponent->BindAction("Manipulator_MouseScrollDown", IE_Pressed, this, &AManipulator::MouseScrollDown); } UPawnMovementComponent* AManipulator::GetMovementComponent() const { return MovementComponent; } void AManipulator::UpdateNavigationRelevance() { if (CollisionComponent) { CollisionComponent->SetCanEverAffectNavigation(bCanAffectNavigationGeneration); } } void AManipulator::MouseScrollUp() { APlayerController* PC = Cast<APlayerController>(GetController()); if (PC) { FRotator const ControlSpaceRot = PC->GetControlRotation(); AddMovementInput(FRotationMatrix(ControlSpaceRot).GetScaledAxis(EAxis::X), 10.0); } } void AManipulator::MouseScrollDown() { APlayerController* PC = Cast<APlayerController>(GetController()); if (PC) { FRotator const ControlSpaceRot = PC->GetControlRotation(); AddMovementInput(FRotationMatrix(ControlSpaceRot).GetScaledAxis(EAxis::X), -10.0); } } void AManipulator::MouseX(float Val) { if (Val != 0.0f && GetController()) { APlayerController* PC = Cast<APlayerController>(GetController()); if (PC) { if (PC->IsInputKeyDown(EKeys::LeftMouseButton)) { PC->AddYawInput(Val); } } } } void AManipulator::MouseY(float Val) { if (Val != 0.0f && GetController()) { APlayerController* PC = Cast<APlayerController>(GetController()); if (PC) { if (PC->IsInputKeyDown(EKeys::LeftMouseButton)) { PC->AddPitchInput(Val); } } } }
TIPS:
1、void AManipulator::MouseX(float Val)和void AManipulator::MouseY(float Val)中
if(PC->IsInputKeyDown(EKeys::LeftMouseButton))要想生效，项目设置中的输入选项需要按照如下设置。
2、MyProjectGameModeBase中把DefaultPawnClass设为自己写的Pawn类AManipulator。
AMyProjectGameModeBase.cpp
#include "MyProject.h" #include "MyProjectGameModeBase.h" #include "MyHUD.h" #include "Manipulator.h" AMyProjectGameModeBase:: AMyProjectGameModeBase (const FObjectInitializer& ObjectInitializer) { if ((GEngine != nullptr) && (GEngine->GameViewport != nullptr)) { DefaultPawnClass = AManipulator::StaticClass(); this->HUDClass = AMyHUD::StaticClass(); } }
--------------------- 作者：wenshuifuping 来源： 原文：https://blog.csdn.net/wenshuifuping/article/details/79197658 版权声明：本文为博主原创文章，转载请附上博文链接！
