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Custom Editor Widgets

I watched the basic ai tutorial on Unreal’s youtube channel and was thinking is there a way to display a line or arc from one point to another for my path finding nodes so i know which one is connected and which one is next? If so is there a tutorial on this or how would I do this?

It might be tricky just with blueprints, but you can make component in actor visible only in editor which will work as line and react depending on variable, problem is you only have construction script in blueprint, you would need on change property event which is available in C++.