Endless Gravity

Low gravity for The End and layered atmosphere physics for the Overworld.

Features

• The End: reduced gravity for players, items, arrows, thrown projectiles, and falling blocks, configurable per entity type
• Overworld atmosphere: a continuous pressure curve (8 configurable layers) weakens gravity and muffles audio above Y 64, up to full vacuum at Y 3500
• Fall damage — normal or disabled in The End and Sable sub-levels, and no fall damage above a configurable altitude in the Overworld
• Sable integration — physics datapack (gravity, pressure, drag) generated automatically for The End and the Overworld, with configurable priorities
• Modded config screen — Cloth Config (bundled, no extra install) with All, The End, Overworld, and General tabs
• Addon API — EndlessGravityAPI utility (pressure, atmosphere progress, real Y projection, Sable helpers) plus the endless_gravity:gravity_immune entity type tag
• Compatible with any modded dimension or Sable sub-level; config is synced from server to client on login

Configuration

Open the mod settings from the NeoForge mod list (or Config → Endless Gravity). Changes apply live where possible; the audio filter and Sable datapack need a restart.

The End

Setting	Default	Description
End Gravity	ON	Master toggle for low gravity in The End
Player Gravity Offset	0.055	Upward force per tick; 0.055 floats gently, crank it and you barely fall
Item Gravity Offset	0.025	Upward force per tick for items (they can't steer, keep it low)
Arrow Gravity Offset	0.03	Upward force per tick for arrows and tridents
Thrown Projectile Offset	0.018	Upward force per tick for snowballs, potions, pearls
Falling Block Offset	0.035	Upward force per tick for sand, gravel, anvils, dragon eggs
Fall Damage Mode	Disabled	Normal / Disabled (The End and Sable sub-levels; the Overworld stays vanilla)
Audio Filter Gain	0.35	Low-pass volume in The End; 1.0 is vanilla audio
Audio Filter Gain HF	0.25	High-frequency side of the filter

Overworld

Setting	Default	Description
Enable Atmosphere	ON	Master toggle for Overworld space effects
Entity Gravity	ON	Gravity from the pressure curve applies to entities
Max Gravity Offset	0.075	Upward force at full vacuum (progress × max)
No Fall Damage Above	400	Above this Y, fall damage is cancelled (64–3500)
Muffle Gain	0.01	Low-pass gain at full vacuum, interpolated from 1.0 at ground
Muffle Gain HF	0.005	High-frequency part of the muffle
Atmosphere Layers	8 layers	Altitude → pressure pairs: -64:1.25, 64:1.0, 400:0.5, 900:0.2, 1200:0.08, 1800:0.01, 2500:0.001, 3500:0.0

Addon API

EndlessGravityAPI (Java, dinner.dev.endless_gravity.EndlessGravityAPI) provides:

• getPressure(y) / getAtmosphereProgress(y) — read the configured pressure curve
• getAtmosphereOffset(y), getAtmosphereMuffleGain(y), getAtmosphereMuffleGainHF(y) — derived atmosphere values
• getRealY(entity), getRealY(level, pos) — project positions out of Sable sub-levels into global space
• isSableLoaded(), isSableManaged(level), isOverworldOrSable(level) — dimension/Sable helpers
• GRAVITY_IMMUNE tag — add entity types to data/endless_gravity/tags/entity/gravity_immune.json to make them ignore low gravity in The End

All gameplay-affecting config values are synced from server to client on login via ConfigSyncPayload.

Requirements

• Minecraft 1.21.1
• NeoForge 21.1+
• Cloth Config — bundled (via Jar-in-Jar), no manual install
• Sable (optional — the mod runs without it; only the Sable sub-level physics and datapacks are skipped)
• Create: Cosmonautics (optional — when installed, it owns Overworld gravity and Endless Gravity backs off)

License

Apache 2.0