使用 UnrealPak.exe 创建 Pak文件方法

看来各位摸UE4 的基佬们，也是被DLC搞得不要不要的呢，其实热更新PAK是很简单就可以实现的，虽然当时我也是弄了快一个月。

下面贴一段以前在 Runtime 状态下 Mount Pak的代码，希望能帮助大家。

首先你得有一个Cookie 过的PAK文件。

Pak文件的例子参照 ：http://www.tomlooman.com/add-mod-support-to-your-unreal-engine-4-game/

（当然也可以通过 UnrealPAK.exe 以命令的形式生产Pak文件）

然后在序列化到本地之后采用类似下面的代码，就可以将资源注册到Game中。

而后就可以像其他asset 一样采用 StaticLoadObject 加载到游戏中了。

        if (FCoreDelegates::OnMountPak.IsBound()) 
        {
            //GEngine
            if (FCoreDelegates::OnMountPak.Execute(temp_filePath, 0, nullptr)) 
            {
                GEngine->AddOnScreenDebugMessage(-1, 5.0f, FColor::Red, TEXT("OnMountPak.Execute Successful."));
            }
            else 
            {
                GEngine->AddOnScreenDebugMessage(-1, 5.0f, FColor::Red, TEXT("OnMountPak.Execute Falied."));
            }
        }
        else 
        {
            GEngine->AddOnScreenDebugMessage(-1, 5.0f, FColor::Red, TEXT("OnMountPak.IsBound() Falied"));
        }

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DLC这个问题折腾老子半个多月，现在总算有点进展，靠靠靠~到现在还是没搞定。

https://forums.unrealengine.com/showthread.php?7323-UE4-equivalent-of-AssetBundles-(Unity)

You could also use pak files. Pak is a single package containing multiple asset files (only content, no DLLs etc).

There's a UnrealPak.exe under Engine/Binaries/Win64. Here's example how it can be used 

UnrealPak.exe D:MyAssetPak.pak PathToYourProject/Content/FolderToAddToPak1 PathToYourProject/Content/FolderToAddToPak2 ...

or

UnrealPak.exe D:MyAssetPak.pak -create=PathToResponseFile.txt

where the ResponseFile could be:

Code:

......EngineContentEditorSlate*.*
......EngineContentLocalization*.*
......EngineShaders*.*
......Engineconfig*.*
PathToYourProject*.uproject
PathToYourProjectConfig*.*
PathToYourProjectContentLocalization*.*
PathToYourProjectSavedSandboxesCooked-WindowsNoEditorEngine*.* ......Engine*.*
PathToYourProjectSavedSandboxesCooked-WindowsNoEditorProjectName*.* ......ProjectName*.*

Note that the last two lines re-base the content from Cooked folder to Content folder.

There's more info in UnrealPak.cpp, line ~582:

Code:

 * Params:
 *   -Test test if the pak file is healthy
 *   -Extract extracts pak file contents (followed by a path, i.e.: -extract D:ExtractedPak)
 *   -Create=filename response file to create a pak file with
 *    where the first number is the private key exponend, the second one is modulus and the third one is the public key exponent.
 *   -TableMax=number maximum prime number in the generated table (default is 10000)