"World" cannot be used as a name for a blueprint structure and there was no indication of that.

Unreal Engine Programming & Scripting Blueprint
#1

So recently I’ve been developing a game that has “Worlds” and each world has several levels. Since the worlds and levels are data-based, I’ve been using a struct to represent them, so I went for the obvious World & Level name for the structs. I was playing the game as Standalone and it didn’t load any world or level and many blueprints stopped working (in PIE it works), so after 2 hours of deleting and changing stuff I tried renaming the World struct to something like WorldLevel and it started working again.

I wanted to write this, just in case somebody has a similar issue, so they can watch out for weird forbidden names and I also wanted to ask if there’s a list of keywords or names we can’t use for assets?

#2

To be honest, this is the first I’ve heard of naming clashes with core classes, but it stands to reason that ‘World’ might be reserved. I would have expected the editor to warn you if this were the case.

#3

The weird forbidden fruits of Unreal Engine :stuck_out_tongue:

#4

Totally agree with you, it makes sense but Unreal should show either a warning or compile error. However, it’s not a big deal, since it seems nobody has come across with that.