GriefPrevention3D v18.4.7 — Fabric (experimental alpha)

Wiki: https://github.com/castledking/GriefPrevention3D/wiki

Roadmap: platforms/fabric-common/ROADMAP.md

Still an alpha, dedicated-server-only build. Back up GriefPreventionData before updating. Requires Fabric API; LuckPerms is optional but recommended.

Overview

The same GriefPrevention3D.jar now runs on Fabric 1.21.11 and on 26.1, 26.1.1, 26.1.2, 26.2 and 26.3, and it still works as a Spigot/Paper plugin. The commands are now Paper's, including /acb and /scb. Staff can create admin claims, and protection covers much more of what the Paper plugin protects.

Minecraft 26.1 to 26.3

• One jar covers every supported Fabric version: it picks the build for the running Minecraft version at startup and stays around 2 MB.
• Every build boots the jar on all six versions with Fabric Loader and checks it against each version's game classes.
• 26.x needs Java 25, as Minecraft itself does. Fabric API is still required.

Commands

The commands now match the Paper plugin's. alias.yml renames, aliases and usage text work as on Paper, and /gpreload rereads alias.yml. [permission] trust targets and negative amounts need no quoting.

Command	What it does
/trust <player> [access|container|build|manage], /accesstrust, /containertrust, /managetrust	Trusts a player, public, or a [permission] in the claim you stand in, or in all your claims when you stand outside them
/permissiontrust <permission> <type>	Trusts everyone with a permission node
/untrust <player|all|public>, /trustlist	Revokes and lists trust
/claim, /claim create [radius]	Claims the land around you
/claimslist [player]	Shows claim-block math and claims
/abandonclaim, /abandontoplevelclaim, /abandonallclaims confirm	Abandons claims you own
/claimpvp, /claimpvpconfirm	Toggles PvP in a claim, where Claims.PvPToggle allows it
/adminclaims, /basicclaims	Switches between admin and basic claims
/acb <player|[permission]> <amount>, /acball <amount>	Adds bonus claim blocks to a player, everyone with a permission, or everyone online
/scb <player> <amount>, /scball <amount>	Sets accrued claim blocks
/aclaim blocks <bonus|accrued> <player|all> <amount>	Adds to either balance

• Permissions and their defaults match the Paper plugin, with or without LuckPerms. Player commands are open to everyone and staff commands to operators or griefprevention.admin.*. Setting griefprevention.claims to false still takes the claim commands away.
• /trust no longer fails with "An unexpected error occurred". If a command does fail, the error is now logged in the server console.
• Player names are matched against online players and players who have joined the server, never looked up with Mojang, so offline-mode servers always get the UUID the player actually joins with.
• /createclaim, /claimblocks and /claimhere are gone. Use /claim create, /claimslist and the stick instead.

Security fixes

Update if other players are on your server:

• Anyone standing in someone else's claim could delete it with /abandonclaim, or trust themselves there with /trust. Both now need ownership or manage trust, as on Paper.
• /claimslist showed every claim on the server to anyone. It now shows your own; seeing another player's needs griefprevention.claimslistother.

Admin claims

/adminclaims makes the golden shovel and /claim create create administrative claims. They are free, count toward nobody's claim limit, and show in Paper's admin colors. Staff with griefprevention.adminclaims can build, resize, trust and abandon inside them. /basicclaims switches back, and the mode resets when you log out.

Claim tools

• The stick inspects claims up to 100 blocks away. Sneak while using it to see every claim within 150 blocks.
• VisualizationGlow: true adds glowing claim-border outlines that only you can see.
• Borders redraw when a claim they show is resized or abandoned, or when a new claim appears nearby.
• Taking out the shovel shows your remaining claim blocks and the claim you stand in. Putting it away cancels a half-finished claim.
• Staff with griefprevention.seeinactivity see how long ago a claim's owner was last online. Fabric records this in LastSeen.yml from this version on, so owners who haven't joined since the update show no time yet.
• The tool items, MinimumWidth, MinimumArea and per-world Claims.Mode are read from config.yml.

Protection

Newly protected, following the Paper plugin's rules and config keys:

• Buckets, boats, lily pads and spawn eggs, checked where the item lands.
• Dyes, ink sacs, honeycomb, brushes and end crystals need build trust, and so do axes, hoes and shovels on blocks they would change.
• Cake, cauldrons, respawn anchors, berry bushes, pumpkins and anvils need container trust. Editing signs needs build trust.
• Item frames and armor stands need build trust to use. Item frames, paintings, armor stands, end crystals and vehicles need build trust to damage, by hand or by projectile, and so do villagers with Claims.ProtectCreatures on. Other animals need container trust. Monsters are never protected.
• Players in claims are safe from PvP according to PvP.ProtectPlayersInLandClaims, and /claimpvp lets a claim choose for itself.
• Explosions no longer hurt protected mobs and entities in claims.
• Water and lava never flow into a claim from outside.
• Pistons follow PistonMovement.
• Fire follows FireSpreads, FireDestroys, Claims.FireSpreadsInClaims and Claims.FireDamagesInClaims.
• Dispensers and droppers only reach into their own claim.
• Farmland trampling follows build trust and CreaturesTrampleCrops; endermen follow EndermenMoveBlocks.

Not on Fabric yet

Subdivisions, 3D and shaped claims, /ignoreclaims, deleting or transferring other players' claims, /trapped, /siege, restore nature and buying or selling claim blocks. Those commands say they aren't available on Fabric yet. The roadmap lists the protections still to come.

Upgrade notes

• Claims and player data use the same GriefPreventionData format as Paper; nothing to migrate.
• Scripts or command blocks that used /createclaim, /claimblocks or /claimhere need updating.
• Building from source: build/libs/GriefPrevention3D.jar is now the universal jar, and the Paper-only jar is GriefPrevention3D-Bukkit.jar.