Disable Elytra Outside The End

The mod does what it says in the name

Features

• Disable elytra flight or firework boosting outside selected dimensions
• Configure everything via config file or the /deote command (GUI available in singleplayer/LAN)
• Customize allowed dimensions and whitelist flight items (Curios supported)
• Customize warning messages
• Prevent players without the mod from joining the server

Configuration

List of all available configuration entries:

Option	Description
workingMode	FLYING, FIREWORKS, or NONE
dimensionList	Dimensions where restrictions are disabled
itemList	Items that allow unrestricted flight when present in the player's inventory
warningMessageEnabled	Enables warning messages
flightDisabledMessage	Message shown when gliding is blocked
fireworksDisabledMessage	Message shown when firework boosting is blocked
modRequired	Prevent players without this mod from joining the server
modRequiredMessage	Server kick message shown to players without the mod

TODO:

• Spigot/Paper plugin (why not)

I'm not planning to backport mod to <1.21.1, since networking got changed and I don't want to get into it.

But source code is open, so you can do it by yourself.

It's not recommended to use v1.x, since it's buggy and terrible.