You can make editor extensions in unity3d Is there a way to in unreal with blueprints? For example I would like to make a blueprint that moves a static meshes verts a tiny bit to make some noise, then save that new static mesh back into unreal. Can this be done? Thanks.
If you want to do that you will need to play with the Source code and add some stuff, many people have done engine plugins, you might want to analize how they have built them, here is a list of UE4 plugins, the pages possibly contain a bit of explanation on how they have constructed the plugins.