【UE4】文件读写

UE4游戏模式及数据传输应用

最新推荐文章于 2023-03-01 10:24:27 发布

原创最新推荐文章于 2023-03-01 10:24:27 发布 · 1.1k 阅读

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博客介绍了MyGameMode的头文件和源文件，蓝图类SaveGame，以及继承自MyGameMode的BP_GameMode。还提及了UE4从服务器下载和向服务器发送Json数据的使用情况。

新建GameMode类继承自GameMode.base

MyGameMode.h

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

#pragma once

#include "CoreMinimal.h"
#include "GameFramework/GameModeBase.h"
#include "Engine/DataTable.h"
#include "MyGameModeBase.generated.h"

/**
 * 
 */
USTRUCT(BlueprintType)
struct FUserInfo
{
	GENERATED_BODY()

	UPROPERTY(BlueprintReadWrite, Category = "UserInfo")
		FString Name;

	UPROPERTY(BlueprintReadWrite, Category = "UserInfo")
		FString ThrearType;

	UPROPERTY(BlueprintReadWrite, Category = "UserInfo")
		int Score;

	UPROPERTY(BlueprintReadWrite, Category = "UserInfo")
		FDateTime SubmitTime;
};

USTRUCT(BlueprintType)
struct FUserInfoString
{
	GENERATED_BODY()

		UPROPERTY(BlueprintReadWrite, Category = "UserInfo")
		TArray<FString>InfoString;
};

UCLASS()
class TEMPLATE_THREAT_API AMyGameModeBase : public AGameModeBase
{
	GENERATED_BODY()
	
public:
	UFUNCTION(BlueprintCallable, Category = "MyGameMode")
		void ExportUserInfo(TArray<FUserInfoString>UserInfoString, TArray<FString>Header);
	
	
};

MyGameMode.cpp

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

#include "MyGameModeBase.h"
#include "FileHelper.h"
#include "Paths.h"

void AMyGameModeBase::ExportUserInfo(TArray<FUserInfoString>UserInfoString, TArray<FString>Header)
{
	FString ExportedText;

	//Write the header
	ExportedText += TEXT("---");
	for (auto& Str : Header)
	{
		ExportedText += TEXT(",");
		ExportedText += Str;
	}
	ExportedText += TEXT("\n");

	//Write the body
	for (int32 Index = 0; Index != UserInfoString.Num(); ++Index)
	{
		ExportedText += FString::FromInt(Index + 1);
		for (auto& Str :UserInfoString[Index].InfoString)
		{
			ExportedText += TEXT(",");
			ExportedText += TEXT("\"");
			ExportedText += Str.Replace(TEXT("\""), TEXT("\"\""));
			ExportedText += TEXT("\"");
		}
		ExportedText += TEXT("\n");

	}

	//Save in utf-8
	FFileHelper::SaveStringToFile(ExportedText, *(FPaths::ProjectDir() + "Score.csv"), FFileHelper::EEncodingOptions::ForceUTF8);


}

蓝图类SaveGame

在这里插入图片描述

BP_GameMode(继承自MyGameMode)

在这里插入图片描述

使用：

		1.示例类似一个考核系统，首先将需要保存的信息先通过savegame存储（调用SubmitScore），比如示例中保存的是姓名、科目、成绩、提交时间 ；
		2.在考核结束后，调用ExportData即可，在本地会出现一个Score数据表格记录成绩信息（FPaths::ProjectDir() + "Score.csv"）；
		3.需要将信息传送到服务器端的话，启用VaRest插件跟着文档操作即可。
		https://blog.youkuaiyun.com/qq_40997637/article/details/94591111

在这里插入图片描述