GUID Tools Plugin

This plugin exposes several utility functions dealing with GUIDs to blueprints and a graph pin customization for FGuid.

This project is mostly a showcase on how to make your own pin type customizations.

Any parameter with meta specifier UPARAM(meta=(GuidFormat=Digits)) or a function that has it will use custom pin visual. Conditions can be viewed and changed in factory class.

Utility functions located in UGuidToolsLibrary:

• To String with format specifier (wrapper for FGuid::ToString with format)
• Parse with format specifier (wrapper for FGuid::ParseExact)
• Combine Guid / Combine Guid Array wrappers for FGuid::Combine
• Make Guid From Array (byte, int)
• Make Guid From String (FString)
• Make Guid From Path (uses FGuid::NewDeterministicGuid and takes FString, FSoftObjectPath, FSoftClassPath input)

Pin Type Customization:

• GuidToolsEditorModule registers factory by calling FEdGraphUtilities::RegisterVisualPinFactory
• The FGuidToolsPinFactory implements FGraphPanelPinFactory that handles creation of SGraphPins
• When conditions are met factory creates & returns a SGraphPinGuid widget that is displayed in graph editor

Q & A

Q: Where can I find more about custom pins?

A: There are many pin type customizations in engine code, in your IDE (Rider, Visual Studio) navigate to FGraphPanelPinFactory and run Show Hierarchy or Find Usages for it.

Q: Why there is no Private/Public folders in Source?

A: By using PublicIncludePaths.Add(ModuleDirectory) in ModuleName.Build.cs you can opt out of it. All include paths will be relative to module directory and not Public/Classes/Private

Q: Why use of TBaseStructure<FGuid>?

A: Because FGuid is an intrinsic type, you can not use StaticStruct<T> to acquire UScriptStruct for it.