Hot Bath 4.2.0 Preview — 2026-10-21

Development preview for Minecraft 1.20.1 / Forge and 1.21.1 / NeoForge.

If using ShowerCore, install the matching ShowerCore 1.2.0 preview.

Choose the JAR for your Minecraft version. Replace old copies and keep one JAR per mod; use the same pair on the server and clients.

Changes since 4.1.2:

• Shared liquid properties, effect timing and optional-mod behavior between world fluids and external bathtubs/pools through Bath API 4.2.0.
• Datapack-configurable built-in bath behavior, dirtiness effect ranges and source conversion; local dirt/fly display controls.
• Bath benefits for eligible friendly mobs, including stationary occupants; four growth stages for bath herbs planted on dirt.
• Correct per-liquid names and preserved white, black and transparent custom-fluid colors.

Validation of the matched pair: 412 JVM tests, 346 core container GameTest methods across both loaders, plus standalone liquid, seasonal and Forge Alex's Caves checks. Actual clients covered 18 base and 19 optional-mod scenarios per loader, including Cold Sweat, Tough As Nails, Legendary Survival Overhaul and Farmer's Delight.

English final verification report — actual game frames held for comparison.

Dedicated multiplayer and shader-pack compatibility are outside this validation. SHA-256 checksums are attached.

Source snapshots: NeoForge 1.21.1, Forge 1.20.1.

Hot Bath 4.1.2

Hot Bath 4.1.2

Bug fixes since 4.1.1 for Forge 1.20.1 and NeoForge 1.21.1.

• Fixed Hot Water Bucket heating recipes with Thirst Was Reclaimed and Polymorph. (#43, #49)
• Fixed missing localized bath fluid names. (#34)
• Fixed dirt overlay texture selection for some players and crouching alignment with Fresh Animations/EMF. (#72, #44)
• Fixed custom bath colors and opacity in Create tanks/spouts, and kept bath bottles upright on belts/depots. (#77, #80)
• Fixed Create honey, herbal and milk bath mixing ingredients on Forge. (#83)
• Preserved custom bath identity and fluid amounts through Create pipes and hose pulleys, including waterlogged blocks, incompatible drains and large fills. (#86, #89, #92, #94, #106)
• Fixed missed bath effects and extinguishing from short Create pipe bursts. (#100)
• Fixed stacked bath sources being overwritten and incomplete custom bath catalogs during synchronization. (#97, #103)
• Kept filled buckets when placement is rejected and respected Adventure waterlogging permissions on 1.21.1. (#109, #112)

Hot Bath 4.1.1

Hot Bath 4.1.1

Patch release for Minecraft 1.21.1 / NeoForge and Minecraft 1.20.1 / Forge.

Fixed

• Restored ordinary water and lava bucket filling when Hot Bath is installed, including Create Spouts.
• Restored fluid capabilities for built-in bath buckets and dynamic datapack bath buckets.
• Fixed Create Spout filling of stacked empty buckets while preserving the bath fluid identity.
• Kept legacy bucket metadata unchanged during reads and simulated transactions; invalid bath fluid IDs do not consume buckets or fluid.

Validation and remaining scope

Both branches passed JVM regression tests, 30 native Create filling transactions and 20 real Spout/emptying transactions in a hidden client across 10 fluids. Tested with Create 6.0.9 on NeoForge 1.21.1 and Create 6.0.8 on Forge 1.20.1. Test and recording harnesses are excluded from the production JARs.

Recipe-viewer GUI behavior and other Create compatibility work remain under review in #47 and #33. This release does not claim full modpack acceptance.

Credits

Thanks to FriedCoder-Awesome for the original fix in #73. The equivalent Forge 1.20.1 fix was merged in #74.

Downloads

• hotbath-1.21.1-4.1.1.jar — Minecraft 1.21.1 / NeoForge.
• hotbath-1.20.1-4.1.1.jar — Minecraft 1.20.1 / Forge.

Hot Bath 4.1.0

Hot Bath 4.1.0

This release collects the fixes and compatibility work accumulated after the previous CurseForge 4.0.1 release.

Downloads

• hotbath-1.21.1-4.1.0.jar - Minecraft 1.21.1 / NeoForge
• hotbath-1.20.1-4.1.0.jar - Minecraft 1.20.1 / Forge

Fixed / Improved

• Fixed the Epic Fight dedicated-server invalid-dist startup issue (#32).
• Updated Tough As Nails bottle datapack integration (#36).
• Added waterlogged bath-effect handling for Minecraft 1.21.1 NeoForge; #34 remains open for tester confirmation and Jade display follow-up.
• Added missing bath block localization keys.
• Added public external bath fluid API helpers so other mods can integrate with Hot Bath fluids without Hot Bath hardcoding every furniture mod.
• Added initial Create/custom-fluid compatibility work, including custom fluid stack handling and custom fluid ID preservation.
• Clarified waterlogging documentation and version support.

Known Issues

• Create compatibility is not fully solved yet. Remaining Create behavior is tracked in #33.
• Unofficial ports or incompatible third-party builds are not supported unless there is an official target version/API to integrate against.

Hot Bath 4.1.0 Dev Test

Warning

Testing build / 测试版本

This prerelease is intended only for testing and compatibility validation. It may contain incomplete or insufficiently tested behavior.

本预发布仅供测试和兼容性验证，可能包含尚未完成或尚未充分验证的功能。普通玩家请等待 CurseForge 正式发布。

Downloads

• hotbath-1.21.1-4.1.0.jar — Minecraft 1.21.1 / NeoForge, built from 4d42ce0
• hotbath-1.20.1-4.1.0.jar — Minecraft 1.20.1 / Forge, built from cc966c3

Test focus

• Tough As Nails bottle thirst, hydration, and warming effects; confirm effects are not applied twice.
• Waterlogged bath effects tracked in #34.
• Create fluid and custom-fluid compatibility tracked in #33.
• Epic Fight dedicated-server compatibility tracked in #32.

Automated build and unit tests passed on both branches. Manual compatibility testing is still requested before the CurseForge release.

Example Custom Fluid Datapacks

Example datapacks demonstrating the Hot Bath custom fluid system.

Includes 7 example bath types: Golden Bath, Slime Bath, Blazing Bath, Ender Bath, Enchanted Bath, Milk Tea Bath, and Silent Spring Bath.

Downloads

• hotbath_example_fluids_1.21.1.zip — For Minecraft 1.21.1 (NeoForge)
• hotbath_example_fluids_1.20.1.zip — For Minecraft 1.20.1 (Forge)

Installation

1. Download the zip for your Minecraft version
2. Place the zip file in your world's datapacks folder
3. Run /reload in-game or restart the world