UE4做配置文件+查找场景actor几种方式

目录

一、目的

1、想：UE4中制作配置文件

2、想：UE4创建单独的C++类，专门作为配置文件，这样其余对象访问配置文件对象里面的数据成员就可以了。

二、参考

1、ue4 c++ 查找场景actor几种方式

• 总结：good：知道自己C++类，通过代码直接访问别的C++类。

三、注意

1、自定义类，包含头文件时候，需要放在这里面

2、获取的路径是指定位置

四、操作

1、UE4中创建Actor的C++类(什么类基本都是可以的)

1、配置文件类：MyActor_config.h

// Fill out your copyright notice in the Description page of Project Settings.
#pragma once

#include "CoreMinimal.h"
#include "GameFramework/Actor.h"

#include "Paths.h"															//配置文件：FPaths需要的头文件
#include "../../ThirdParty/Fast/include/Fast_Config.h"	//一定写在这里！

#include "MyActor_config.generated.h"

struct T_FLASH
{
    char path[255];
};

UCLASS()
class RSXB_API AMyActor_config : public AActor
{
    GENERATED_BODY()
    
public:	
    // Sets default values for this actor's properties
    AMyActor_config();

protected:
    // Called when the game starts or when spawned
    virtual void BeginPlay() override;

public:	
    // Called every frame
    virtual void Tick(float DeltaTime) override;

public:
    //读取配置文件
    void ReadConfig();

    T_FLASH mFlash;

    UPROPERTY(EditAnywhere, BlueprintReadWrite, Category = "Damage")
        bool bIsOkReadConfig;//是否成功读取配置文件
};

1、配置文件类：MyActor_config.cpp

// Fill out your copyright notice in the Description page of Project Settings.

#include "MyActor_config.h"

// Sets default values
AMyActor_config::AMyActor_config()
{
     // 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;

    //读取配置文件
    //ReadConfig();
}

// Called when the game starts or when spawned
void AMyActor_config::BeginPlay()
{
    读取配置文件
    ReadConfig();

    Super::BeginPlay();
}

// Called every frame
void AMyActor_config::Tick(float DeltaTime)
{
    Super::Tick(DeltaTime);

}

void AMyActor_config::ReadConfig()
{
    bIsOkReadConfig = true;

    FString str = FPaths::GeneratedConfigDir();
    char path[255];
    sprintf_s(path, "%sconfig.ini", TCHAR_TO_UTF8(*str));

    int a = 0;
    //速度
    a = FastReadIniValue(path, "Flash", "path", &mFlash.path, 0);
    if (a < 0)
        bIsOkReadConfig = false;
}

1、UE4场景设置，将创建的配置文件类放到场景中，方便其他类通过场景访问这个配置文件类

1、别的类访问自定义类：MyHUD.h

1、别的类访问自定义类：MyHUD.cpp

#include "Kismet/GameplayStatics.h"

void AMyHUD::BeginPlay()
{
    Super::BeginPlay();
    
    //场景中找到AMyActor_config类的对象
    TArray<AActor*> Actors;
    UGameplayStatics::GetAllActorsOfClass(GetWorld(), AMyActor_config::StaticClass(), Actors);
    myActor_config = static_cast<AMyActor_config*>(Actors[0]);


}

1、文件夹设置：config.ini

[Flash]
path=F:/Project/yinTang/renShiXiBao/Scripts/NEW4.21/RSXB100/Flash/RSXB100/RSXB.swf