World Limit

Hello everyone, I want to make a limit of world as in the old world of MCPE ...

Some servers do this as InPvP (screen link), and I would like to do it for my server too!

Do you have an idea how to do it?

Thank you in advance, and excused me for my bad English, I am French

 

Create a world generator where all the chunks after a certain X or Z coordinate only generate themselves full of invisible bedrock

 

Yes, but it's a map already generated, or players already play on it...

 

Create a plugin which on chunk load/generate sets all the blocks to be invisible bedrock after a certain X or Z coordinate