UEScripts/doc/PluginPackage.md

Packaging a Plugin for the Marketplace

To distribute a plugin on the marketplace, you need to zip it up and make sure you only include approved files. The ue-plugin-package.ps1 script is here to make that job easier.

Note: This script will update your .uplugin file to record the new version number, and manipulate EngineVersion for each build. Its state will be restored afterwards (apart from the version number).

Unfortunately the first time, this will probably mess with indenting because of a difference of opinion between JSON libraries. But it's harmless.

Usage:
  ue-plugin-package.ps1 [-src:sourcefolder] [-major|-minor|-patch|-hotfix] [options...]

  -src          : Source folder (current folder if omitted), must contain pluginconfig.json
  -major        : Increment major version i.e. [x++].0.0.0
  -minor        : Increment minor version i.e. x.[x++].0.0
  -patch        : Increment patch version i.e. x.x.[x++].0 (default)
  -hotfix       : Increment hotfix version i.e. x.x.x.[x++]
  -keepversion  : Keep current version number, doesn't tag unless -forcetag
  -forcetag     : Move any existing version tag
  -notag        : Don't tag even if updating version
  -test         : Testing mode, separate builds, allow dirty working copy
  -browse       : After packaging, browse the output folder
  -dryrun       : Don't perform any actual actions, just report on what you would do
  -help         : Print this help

This script operates based on a pluginconfig.json file which must be present in the root of your plugin, next to the .uplugin file. The options are:

{
    "PackageDir": "C:\\Users\\Steve\\MarketplaceBuilds",
    "PluginFile": "OptionalPluginFilenameWillDetectInDirOtherwise.uplugin",
    "EngineVersions":
    [
        "5.0.0",
        "5.1.0",
        "5.2.0"
    ]    
}

PackageDir and EngineVersions are required.

Engine Versions

When submitting code plugins to the Marketplace, you're only allowed to include a single supported EngineVersion in each version you upload. Even though you don't submit built binaries to the Marketplace, the publisher portal requires that the .uplugin has a single EngineVersion entry.

Therefore to support multiple engine versions, you have to upload several essentially identical source archives, with each one having a different EngineVersion specified in the .uplugin.

This script helps you do that; for each entry in EngineVersions in the pluginconfig.json, a separate zip archive is generated, with the correct version set in the .uplugin.

It seems you should always use ".0" as the 3rd version digit.

Excluding Files

By default, the plugin packaging process automatically excludes common files and directories that shouldn't be there:

• ./.git/
• ./.git*
• ./Binaries/
• ./Intermediate/
• ./Saved/
• ./pluginconfig.json

If you'd like to exclude other things, create a file called packageexclusions.txt in the root of the plugin, listing files/folders you want to exclude (one per line).