虚幻4 ue4 学习笔记pwan篇 1.3 BindAction控制粒子组件 火焰特效
头文件部分
1 // Fill out your copyright notice in the Description page of Project Settings. 2 3 #pragma once 4 5 #include "CoreMinimal.h" 6 #include "GameFramework/Pawn.h" 7 #include "MyPawn.generated.h" 8 9 UCLASS() 10 class TEST4_API AMyPawn : public APawn 11 { 12 GENERATED_BODY() 13 14 public: 15 // Sets default values for this pawn's properties 16 AMyPawn(); 17 18 protected: 19 // Called when the game starts or when spawned 20 virtual void BeginPlay() override; 21 22 public: 23 // Called every frame 24 virtual void Tick(float DeltaTime) override; 25 26 // Called to bind functionality to input 27 virtual void SetupPlayerInputComponent(class UInputComponent* PlayerInputComponent) override; 28 void fire();//就这一行代码 29 UParticleSystemComponent* OurParticleSystem; 30 };
cpp部分
1 // Fill out your copyright notice in the Description page of Project Settings. 2 3 #include "MyPawn.h" 4 #include "Runtime/CoreUObject/Public/UObject/ConstructorHelpers.h" // ConstructorHelpers 引用 5 #include "Runtime/Engine/Classes/Particles/ParticleSystemComponent.h"//UParticleSystemComponent 引用 6 #include "Runtime/Engine/Classes/GameFramework/SpringArmComponent.h"//UStaticMeshComponent 引用 7 // Sets default values 8 AMyPawn::AMyPawn() 9 { 10 // Set this pawn to call Tick() every frame. You can turn this off to improve performance if you don't need it. 11 PrimaryActorTick.bCanEverTick = true; 12 AutoPossessPlayer = EAutoReceiveInput::Player0;//这行代码不加 无法实现用户操作 此时用户视角就是当前pawn视角 13 // 创建一个可启用或停用的粒子系统 14 OurParticleSystem = CreateDefaultSubobject<UParticleSystemComponent>(TEXT("MovementParticles")); 15 OurParticleSystem->SetupAttachment(RootComponent);//直接将粒子系统添加到根组件上 16 OurParticleSystem->bAutoActivate = true;//在场景中激活 17 18 OurParticleSystem->SetRelativeLocation(FVector(-20.0f, 0.0f, 20.0f)); 19 OurParticleSystem->SetWorldScale3D(FVector(3.0f));//SetWorldScale3D 设置组件在世界空间中的变换倍数。 倍数以原来模型大小为基准 20 static ConstructorHelpers::FObjectFinder<UParticleSystem> ParticleAsset(TEXT("/Game/StarterContent/Particles/P_Fire.P_Fire")); 21 if (ParticleAsset.Succeeded()) 22 { 23 OurParticleSystem->SetTemplate(ParticleAsset.Object); 24 } 25 } 26 27 // Called when the game starts or when spawned 28 void AMyPawn::BeginPlay() 29 { 30 Super::BeginPlay(); 31 32 33 } 34 35 // Called every frame 36 void AMyPawn::Tick(float DeltaTime) 37 { 38 Super::Tick(DeltaTime); 39 40 } 41 42 // Called to bind functionality to input 43 void AMyPawn::SetupPlayerInputComponent(UInputComponent* PlayerInputComponent) 44 { 45 Super::SetupPlayerInputComponent(PlayerInputComponent); 46 PlayerInputComponent->BindAction("fire", IE_Pressed, this, &AMyPawn::fire); 47 48 } 49 50 void AMyPawn::fire() { 51 OurParticleSystem->ToggleActive();//官方提供的切换状态 方法 我不建议使用 后面博客会告诉你为什么
//建议通过ourParticleSystem->SetActive(计数器)实现;//通过计数器 切换状态 52 if (GEngine) 53 { 54 // TEXT只能接受字符串长 55 //FString fireAutoStutas = FString::FromInt(OurParticleSystem->bAutoActivate); 56 //FString fireStutas = FString::FromInt(OurParticleSystem->bIsActive); 57 GEngine->AddOnScreenDebugMessage(-1, 0.2, FColor::Red, TEXT("火焰！")); 58 59 } 60 61 //切换状态 62 63 }
没有摄像头组件 所以视角默认就是pwan本身 看起来很难受
