LAN联网很简单相信大家都会了，现在跟大家分享下Steam联网的设置
参考：https://wiki.unrealengine.com/Steam,_Using_the_Steam_SDK_During_Development
不过上面是英文版的，以下是我亲测可用的：
1.在UE4安装目录下 找到 Steamworks文件夹。
我的UE4安装在D盘Program Files文件夹里，路径是：
D:\Program Files\Epic Games\4.12\Engine\Source\ThirdParty\Steamworks
各位可以参考下。
2.该文件夹中，新建两个文件夹，名字分别为：Win64和Win32
新建后效果如图：
3.在Steam安装目录下找到以下dll，复制到对应文件夹。
Win64
steam_api64.dll (Downloaded SDK) steamclient64.dll (Steam Client Install Dir) tier0_s64.dll (Steam Client Install Dir) vstdlib_s64.dll (Steam Client Install Dir)
Win32
steam_api.dll (Downloaded SDK) steamclient.dll (Steam Client Install Dir) tier0_s.dll (Steam Client Install Dir) vstdlib_s.dll (Steam Client Install Dir)
我的Steam安装在了C盘，各位可以参考并找到自己的安装路径
C:\Program Files (x86)\Steam
4.打开你的工程文件的VS
5.在Build.cs中加入以下代码
PublicDependencyModuleNames.AddRange(new string[] {
"OnlineSubsystem",
"OnlineSubsystemUtils"
});
DynamicallyLoadedModuleNames.Add("OnlineSubsystemSteam");
6.在Target.cs中的TargetRules中加入一句代码：bUserSteam = true;
7.在Config文件夹下的DefaultEngine.ini文件中，加入以下代码：
[/Script/Engine.GameEngine] !NetDriverDefinitions=ClearArray +NetDriverDefinitions=(DefName="GameNetDriver",DriverClassName="/Script/OnlineSubsystemSteam.SteamNetDriver",DriverClassNameFallback="/Script/OnlineSubsystemUtils.IpNetDriver") [OnlineSubsystem] DefaultPlatformService=Steam PollingIntervalInMs=20 [OnlineSubsystemSteam] bEnabled=true SteamDevAppId=480 GameServerQueryPort=27015 bRelaunchInSteam=false GameVersion=1.0.0.0 bVACEnabled=1 bAllowP2PPacketRelay=true P2PConnectionTimeout=90 [/Script/OnlineSubsystemSteam.SteamNetDriver] NetConnectionClassName="/Script/OnlineSubsystemSteam.SteamNetConnection"
我的路径是：
D:\test\TestSteam\Config
8.编译C++代码，编译好了以后打包。
9.把UE4源文件里的Engine\Binaries\ThirdParty\Steamworks整个复制到打包好的文件的Binaries\ThirdParty下。
我的路径是：
D:\Program Files\Epic Games\4.12\Engine\Binaries\ThirdParty\Steamworks 复制到
10.然后就可以运行了，按Shift+Tab 就可以调出Steam的界面！
