Slumber

Sleep with progress. Slumber accelerates the entire server tick while everyone sleeps — not just time-of-day. Blocks, entities, block entities, random ticks, scheduled updates, weather, raids… everything advances across all dimensions during sleep.

Features

Full world ticking: Runs extra full ticks so blocks, entities, and schedules progress.
All dimensions: Applies to every loaded dimension (Overworld, Nether, End, modded).
Server + singleplayer: Works on dedicated servers and integrated singleplayer.
All-players requirement: Only activates when all non‑spectator players are sleeping.
No instant skip: Temporarily disables vanilla night‑skip while simulating; restores it after.
Configurable speed: Controlled by a gamerule for quick per‑world tuning.

Configuration

Gamerule slumberTickMultiplier (integer, default 20): - Total server tick multiplier while all players sleep. - Example: 20 → 1 normal tick + 19 extra ticks per server tick (≈20× speed). - Minimum effective value is 1 (no acceleration).

Commands

Set multiplier: /gamerule slumberTickMultiplier 30
Read current: /gamerule slumberTickMultiplier

Requirements

Minecraft: 1.21.1+
Loader: NeoForge, Forge, or Fabric (matching your MC version)

Installation

Client (singleplayer/LAN): Drop the JAR into your mods/ folder.
Server: Drop the JAR into the server’s mods/ folder. All connected clients only need to join a modded server; this mod runs server‑side and does not add items/blocks.

Performance Notes

Multiplier cost: The higher the slumberTickMultiplier, the more work per real‑time second. Large multipliers with many loaded chunks can impact MSPT.
Recommendation: Start with 20 and adjust. Consider reducing if the server approaches 50+ MSPT during sleep.

Multiplayer Behavior

Activation rule: Every non‑spectator player in the server must be sleeping. Spectators are ignored for this check.
Partial sleep: If any non‑spectator is awake, Slumber does nothing and vanilla behavior applies.

Compatibility

Designed to be non‑invasive: it uses event hooks to run extra world ticks, without coremodding.
Should be compatible with most mods. Extremely heavy tick‑based mods may amplify the cost of higher multipliers.

FAQ

Does this change loot or gameplay rules? No. It only changes how many world ticks run while everyone sleeps.
Does it force morning instantly? No. Vanilla fast‑forward is suppressed during the simulation. Once it’s naturally day (or someone wakes), the original threshold is restored and vanilla proceeds.
Does it affect only Overworld? No. All loaded dimensions tick equally.

Contributing

Issues and PRs are welcome. Please include logs and steps to reproduce performance or compatibility problems.