How many Variables are too many inside a BP Struct?

[3dRaven]

You will be limited by FString and not variable count. The summed length of the data + quotation marks, commas and curly brackets is really the limit.

Though the longer your string the more calculations will go into parsing / building back and forth between JSON and FString.

500×500 2.84 KB

Ofcourse it does, but i doubt you’ll reach it anytime soon with a normal game. “Len” returns the length as Int32(which is a little flaw in my opinion since length/size can not be smaller than 0). Deriving from it, that it supports the full 31 Bits of the positive space of Int32, you can create a string with up to 2.147.483.647 characters. IIRC a TChar is 1 Byte, this means a FString of roughly 2GB(!). Nothing beyond this is possbile, because otherwhise Int32 will flip to negative value.

Main question is why would you need 500+ variables inside of a single struct? Are you making the right design choices?

Maybe some of this should be split into actors and serialized into a save file?

If you are basically trying to create a database then why not just use one?

You could go the route of a file database via SQLite for something like this (better than datatables because it can be modified at runtime)

Tutorial on using SQLite with Unreal. It’s an external link:

Using SQLite with Unreal | Coding Babble