copypaster

Copy cuboid regions to files. Paste them back exactly where you mean to — anchored to your position.

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Copy Paster is a Fabric client + server mod for survival and creative builders who want a fast, visual way to duplicate structures without leaving the game. Select a box in the world, name it in chat, then paste it later — position follows where you stand at copy time and paste time, so offsets stay intuitive.

• Interactive /copy — click two corners; live wireframe preview while you aim
• Paste ghost preview — cyan outline when blocks would be overwritten
• Undo — /pasteundo restores the last paste (in-memory until restart)
• Ukrainian (uk_ua) — full UI strings alongside English
• Configurable highlights — config/copypaster.yml or optional Mod Menu + Cloth Config

Maintainer docs: CLAUDE.md · Release notes: CHANGELOG.md

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Install

Where	What
Dedicated server	copy_paster-<version>.jar in mods/ + Fabric API
Each player	Same JAR in client mods/ (required for /copy, previews, HUD)

Server-only mode: coordinate /copy x1 y1 z1 x2 y2 z2 and all /paste commands still work; bare /copy needs the client mod.

Optional: Mod Menu + Cloth Config for in-game highlight colour.

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Quick start

1 · Save a region

1. Stand at the anchor point you want for this copy.
2. Run /copy.
3. Attack corner 1, then corner 2 (blue wireframe follows your crosshair).
4. Use (right-click) to cancel anytime.
5. Type a structure name in chat (a–z, 0–9, _, -, max 64 chars). Type cancel to abort (60 s).

Legacy: /copy <x1> <y1> <z1> <x2> <y2> <z2> then name in chat — or bind [ / ] under Options → Controls → Miscellaneous (unbound by default).

2 · Paste it back

1. Stand in the same relative spot you used when copying.
2. /paste <name> — confirm with /paste <name> confirm if the ghost preview warns about overwrites.
3. Save the undo ID from chat for /pasteundo <id>.

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Commands

Command	Description
/copy	Interactive block selection (client mod)
/copy <x1> <y1> <z1> <x2> <y2> <z2>	Coordinate selection
/paste <name>	Paste at player-relative anchor
/paste <name> confirm	Paste after overwrite warning
/pasteundo <id>	Restore blocks from one paste
/copylist	List saved structures
/copyinfo <name>	Size, dimension, offset, metadata
/copydelete <name>	Remove .nbt + .json

All commands require operator on the server.

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Controls

Input	Action
/copy	Start interactive selection
Attack block	Set corners 1 → 2
Use	Cancel selection
[ / ] (if bound)	Legacy corner shortcut

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Limits & storage

Max volume	32 768 blocks
Files	Server copypaster/structures/ — <name>.nbt + <name>.json
Undo	In memory only; cleared on server restart
Highlight colour	Client config/copypaster.yml

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Build

./gradlew clean jar
# → build/libs/copy_paster-<version>.jar

Requires Java 25. See CLAUDE.md for deploy runbook (Fabric on gserver).

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License

See repository license file if present; otherwise treat as private CrazyHouse tooling until a license is added.