SimReset

Server-side admin toolkit for force-resetting stuck sub-levels on NeoForge 1.21.1.

Adds /sable disassemble and /sable reassemble — instantly tear down or rebuild Sable sub-level structures (the physics sub-worlds behind Aeronautics ships and contraptions) without waiting for physics to settle.

Links
Issues	github.com/Yukovsky/SimReset/issues
Releases	github.com/Yukovsky/SimReset/releases

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Features

Command	What it does
/sable disassemble all	Instantly disassembles every sub-level in the current dimension
/sable disassemble uuid <uuid>	Disassembles a single sub-level by its UUID
/sable disassemble name <name>	Disassembles a single sub-level by its display name
/sable reassemble all	Disassembles, then reassembles every sub-level one tick later
/sable reassemble uuid <uuid>	Disassembles and reassembles a single sub-level by UUID
/sable reassemble name <name>	Disassembles and reassembles a single sub-level by display name

• Disassemble is instant — no waiting for physics alignment.
• Reassemble disassembles first, then rebuilds through the sub-level's PhysicsAssembler one tick later, preserving its display name.
• Tab-completion for both UUID and name arguments, sourced from currently loaded sub-levels.
• Scans unloaded sub-levels directly from storage, not just the ones currently in memory.
• Version-aware reflection — works across Sable 1.x/2.x and Aeronautics 1.2.x/1.3.x without needing separate builds.
• Sub-levels without a primary assembler are skipped with a warning instead of failing the whole batch.

Built for server operators who need to clear a sub-level stuck mid-assembly, corrupted by a crash, or duplicated by a desync — a quick reset beats restoring from backup.

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Requirements

Minecraft	1.21.1
NeoForge	21.1.172 or later
Java	21
Side	Server only
Dependencies	Sable 1.2.2+, Simulated 1.2.1+ (bundled with Aeronautics)

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Installation

1. Download the latest jar from Releases.
2. Place it in the mods/ folder of your NeoForge server, alongside Sable and Aeronautics.
3. Start the server — no configuration required.

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Commands

Permission node: simreset.command (default: OP level 2, permission 2).

/sable disassemble all
/sable disassemble uuid 550e8400-e29b-41d4-a716-446655440000
/sable disassemble name "MyShip"

/sable reassemble all
/sable reassemble uuid 550e8400-e29b-41d4-a716-446655440000
/sable reassemble name "MyShip"

A sub-level's UUID can be found via /sable storage find_all_sub_levels or /sable info. Its display name is set in the assembler's GUI and can be looked up with /sable storage find <name>.

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Building from Source

SimReset compiles against Sable and Aeronautics/Simulated as local compileOnly jars — they aren't published on a public Maven repository, so they must be provided manually.

1. Clone the repository:

   git clone https://github.com/Yukovsky/SimReset.git
   cd SimReset

2. Copy the following jars into libs/ (from a server's mods/ folder, or your own build of each project):
   • sable-neoforge-<version>.jar
   • aeronautics-neoforge-<version>.jar or create-aeronautics-bundled-<version>.jar (includes Simulated)
3. Build:

   ./gradlew build

Output jar: build/libs/simreset-<version>.jar. Requires Java 21.

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License

Apache License 2.0