ChunkAnchor

A Paper plugin that adds craftable chunk loaders — Chunk Anchors — that keep the chunks around them loaded as long as they are fuelled with Anchor Charge, a brand-new fuel item.

Built for Paper 26.3 (Java 25).

Features

• Three anchor tiers, crafted in survival and upgraded by crafting the previous tier with more expensive materials
• Anchor Charge — a custom fuel item with its own recipe
• Every anchor has a maximum charge capacity and slowly drains while running; when the charge runs out it stops loading chunks
• Furnace-style fuel: unused fuel drops when the anchor is broken, the piece that is currently burning is lost
• Right-click an anchor to open its menu: charge bar, time left, insert/withdraw fuel, switch on/off
• Uses Paper's plugin chunk tickets, so chunks stay loaded through Paper's own chunk system
• Per-player anchor limit, disabled worlds, owner-only access/breaking, explosion protection
• Everything (recipes, tiers, ranges, capacities, drain rates, items, menu and messages) is configurable

Default tiers

Tier	Block	Area	Capacity	Drain / minute	Runtime when full
Chunk Anchor	Lodestone	1 chunk	1440	1	24 h
Reinforced Chunk Anchor	Crying Obsidian	3×3	2880	3	16 h
Eternal Chunk Anchor	Netherite Block	5×5	5760	6	16 h

One Anchor Charge is worth 60 charge.

Default recipes

Anchor Charge (makes 2)

R G R      R = Redstone Dust
G P G      G = Glowstone Dust
R G R      P = Ender Pearl

Chunk Anchor

O D O      O = Obsidian
E L E      D = Diamond
O D O      E = Eye of Ender, L = Lodestone

Reinforced Chunk Anchor

G E G      G = Block of Gold, E = Eye of Ender
C A C      C = Crying Obsidian, A = Chunk Anchor
G D G      D = Block of Diamond

Eternal Chunk Anchor

N E N      N = Netherite Ingot, E = End Crystal
E A E      A = Reinforced Chunk Anchor
N S N      S = Nether Star

Commands

Command	Description	Permission
/chunkanchor list [player]	List your (or someone's) anchors	chunkanchor.use / chunkanchor.admin for others
/chunkanchor give <player> <tier> [amount]	Give anchors	chunkanchor.admin
/chunkanchor fuel <player> [amount]	Give Anchor Charge	chunkanchor.admin
/chunkanchor debug	Show loaded chunk tickets and load levels	chunkanchor.admin
/chunkanchor reload	Reload the config	chunkanchor.admin

Alias: /anchor

Permissions

Permission	Default	Description
chunkanchor.use	everyone	Place and use anchors
chunkanchor.admin	op	Admin commands, access and break any anchor
chunkanchor.bypass.limit	op	Ignore the per-player anchor limit

Configuration

See config.yml. Text uses MiniMessage. Recipe ingredients can be any material, anchor:<tier> for an anchor of another tier, or fuel for Anchor Charge.

Changing a tier's block affects anchors that are already placed: anchors whose block no longer matches are removed.

Building

./gradlew build

The jar ends up in build/libs/.

Releases

Development happens on dev. Every push to master builds the plugin and, if the version in gradle.properties has no release yet, creates a GitHub release and publishes the jar to Modrinth. Bump version in gradle.properties before merging into master.

License

MIT