JJSH (Jujutsu Craft Addon)

Headline: Multiplayer Raids

Raids were effectively single-player only — one raid per server, every overworld player force-conscripted and teleported in, and the vanilla world border overwritten so uninvolved players got trapped and damaged. This update rewrites the system.

Concurrent Raids

Different parties can now run their own raids at the same time. Each raid has its own arena, boss bar and mobs, with no interference. Start as many as you like as long as arenas don't overlap (default cap 8, jjshMaxConcurrentRaids). Use /raid list to see active raids.

Radio Party Invites

Picking a stage opens a party screen. Invite specific players; only those who accept join. Invites arrive in chat with clickable [Accept] / [Decline]. Use Solo to go alone. Invites expire in 60s, parties in 10min, and a party dissolves if the leader logs off. Players in other dimensions can be invited and are pulled to the overworld on start. Players who haven't unlocked the stage can't be invited — no progression skipping.

New Arena Border

A dedicated border replaces the vanilla world border: no damage, no red vignette, and your server's world border settings are left alone. Each raid gets its own. Non-party members who enter an arena are pushed back out.

The World Keeps Running

Natural mob spawning is now suppressed only inside arenas instead of across the entire overworld.

Participant-Only Notifications

Raid chat, titles and sounds now go only to that raid's participants (spectating dead party members included).

Reworked GUI

A round Mechamaru radio panel with metal plate buttons. Cleared stages get a red hanko stamp; locked stages show a padlock and can't be clicked.

Bug Fixes

• Raids starting and instantly cancelling with no explanation on Peaceful difficulty — now blocked up front with a clear message

• Couldn't start a raid while in Creative mode

• Any participant could cancel the whole party's raid — now the raid starter or an admin only

• Leftover raid data could leave the world border and mob-spawning gamerule corrupted — old worlds are cleaned up automatically on load

Notes

• Auto-raid (jjshAutoRaidStart) still uses the old behavior; it is off by default

• Raids require difficulty Easy or higher