unreal-c++教程-第一章:第一个c++脚本

yukamu · 发表于 2022-7-16 10:59

第一个c++脚本

本教程简述

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1.创建第一个Unreal c++ 脚本

2. FirstActor的结构

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2.1 FirstActor.h和FirstActor.cpp

// Fill out your copyright notice in the Description page of Project Settings.#pragmaonce#include"CoreMinimal.h"#include"GameFramework/Actor.h"#include"FirstActor.generated.h"UCLASS()
class UNREALLABX_API AFirstActor : public AActor
{GENERATED_BODY()
public:// Sets default values for this actor's propertiesAFirstActor();
protected:// Called when the game starts or when spawned
virtual voidBeginPlay() override;
public:// Called every frame
virtual voidTick(float DeltaTime) override;};

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// Fill out your copyright notice in the Description page of Project Settings.#include"FirstActor.h"// Sets default values
AFirstActor::AFirstActor(){// Set this actor to call Tick() every frame. You can turn this off to improve performance if you don't need it.
PrimaryActorTick.bCanEverTick = true;}// Called when the game starts or when spawnedvoid AFirstActor::BeginPlay(){
Super::BeginPlay();}// Called every framevoid AFirstActor::Tick(float DeltaTime){
Super::Tick(DeltaTime);}

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2.2 Unreal宏(macros)

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2.2.1 宏UCLASS()和宏GENERATED_BODY()

3 基本函数BeginPlay()和Tick()

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3.1 UE_LOG函数

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3.2 在Unreal Log中每一帧都输出Hello Wolrd

3.2.1 FisrtActor.cpp 代码逻辑

// Fill out your copyright notice in the Description page of Project Settings.#include"FirstActor.h"// Sets default values
AFirstActor::AFirstActor(){// Set this actor to call Tick() every frame. You can turn this off to improve performance if you don't need it.
PrimaryActorTick.bCanEverTick = true;}// Called when the game starts or when spawnedvoid AFirstActor::BeginPlay(){
Super::BeginPlay();}// Called every framevoid AFirstActor::Tick(float DeltaTime){
Super::Tick(DeltaTime);UE_LOG(LogTemp, Warning,TEXT("Hello world"));}

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3.2.2 在UnrealEditor 中的操作

3.2.2.1 编译c++脚本

3.2.2.2 将FIrstActor放到场景中去

运行

结果输出

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