SmartUtility

1.8.0

One new feature: shared backpack groups.

New: Shared Backpack

/backpack create <name>              start a group; you become its owner
/backpack invite <group> <player>    owner only, invites a player
/backpack accept|decline <group>     join a group you were invited to, or turn it down
/backpack open <group>               opens the shared storage, for any member
/backpack leave <group>              leave; the owner leaving disbands it instead
/backpack kick <group> <player>      owner only, removes a member
/backpack disband <group>            owner only, deletes the group and its contents
/backpack list                       your groups and any pending invites

A group shares one storage container — a real chest, single or double sized — between everyone who was invited and accepted. Nobody ends up in a group without agreeing to it themselves: an invite only takes effect once the invitee types /backpack accept. This works on vanilla clients, because opening it is a command and the container itself is an ordinary chest screen.

maxOwnedGroups in [sharedBackpack] caps how many groups a player can own at once (default 3); being invited into someone else's group does not count against it. maxMembersPerGroup (default 8, owner included) is checked both on invite and on accept. doubleChest (default false) makes a newly created group's backpack 54 slots instead of 27; existing groups keep the size they were created with.

Off by default. Shared storage between players changes a server's economy more than a friend list does. Turn it on with /smartutility feature enable sharedBackpack or in the config.

Small print

• Existing config files pick up the new [features] sharedBackpack entry and [sharedBackpack] section on load, with NeoForge writing the usual backup first.
• shared_backpack.dat is stored with the world, the same as friends, homes and the server-wide statistics, so it survives restarts and travels with a world backup.
• Kicking a member, or the owner disbanding a group, closes the storage screen for anyone who has it open at the time, the same way a chest that stops existing would.