Dragon Movement Fix

Dragon Movement Fix

Fixes the old bug introduced in 1.14 where the Ender Dragon's Vertical Movement is very slow. Effectively patches out one-cycling. If you've fought the dragon in 1.12 or 1.13 you might know what this is.

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21.8K Downloads
datapackfabricforgeneoforgequiltgame-mechanicsoptimizationutility
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Screenshots

Dragon Dive

About this Mod

Dragon Movement Fix

About

Dragon Movement Fix is a Minecraft datapack to fix MC-272431, a bug introduced in 1.14 snapshot 19w08b where a typo in the Ender Dragon's vertical movement code causes erratic behavior from the Ender Dragon, such as slowly gliding down to perch instead of diving to the central bedrock podium. This works on literally every version of the game that has this bug, including the snapshot the bug first appeared in, due to the pack's simplistic implementation.

If you've ever fought the dragon in an older version like 1.12 or 1.13, you might know what I'm talking about.

Patches out one-cycling and other strategies that rely on MC-272431.

Questions/Issues? Post them in my discord as they are more likely to get seen there. Find it on the sidebar.

Dependencies

  • Fabric API (Fabric/Quilt mod only)
  • A newer version of Minecraft (Forge Mod version only, specific required version unknown)

To Modpack Creators:

I permit the use of this datapack/mod in your modpacks. You can include it in modpacks without the need to ask me about it. However, notifying me if it is being included in your modpack would be nice.

To Developers

You may depend on, make mods (somehow) for, and help contribute to this project. However, if you wish to publish this project elsewhere/post a fork of this project, I would like if you asked me for permission beforehand. Note: contributions that would cause me to drop support for one or more game versions will not get accepted.

To Content Creators/Streamers

I am completely fine with, and even encourage, creating of content with this project. If you do, it would be very appreciated if you would please credit this project and link to this page if you use this in your content/stream.

Notes

  • This datapack isn't perfect, and has some issues related to the dragon's vertical velocity, most of which aren't fixable without heavily altering the pack and causing it to drop support for older versions of Minecraft (there's already Customizable Dragon AI that has a lot of the issues fixed, along with a bunch more features, but only supporting 1.20.3 and newer), for example explosions will cause the dragon to launch 10x as high as it would normally, for one tick only, before going back to a normal-ish amount of knockback.

Trivia

Some fun facts about this project!

  • Funny thing, I probably won't ever have to make a change to how the pack works in order to support a version because it doesn't use any commands that Mojang are going to change in a way that breaks the pack in the forseeable future. The only reason this pack would need to be updated is to fix a bug or add something.
    • Which means v1.1.5 is likely the last version of this pack until Mojang does something somehow to break this pack which is likely going to be never.
  • This project was created AFTER my other similar project, Customizable Dragon AI, despite this being uploaded BEFORE it.

Available Versions

v1.1.6release
MC 19w08b, 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1-snapshot-1, 26.1-snapshot-2, 26.1-snapshot-3fabric, forge, neoforge, quilt
July 18, 2025
v1.1.6release
MC 19w08b, 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 1.21.5, 1.21.6, 1.21.7, 1.21.8, 1.21.9, 1.21.10, 1.21.11, 26.1-snapshot-1, 26.1-snapshot-2, 26.1-snapshot-3datapack
July 18, 2025
v1.1.5release
MC 19w08b, 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 25w02a, 25w03a, 25w04a, 25w05a, 25w06a, 25w07a, 25w08a, 25w09a, 25w09b, 25w10a, 1.21.5-pre1, 1.21.5-pre2, 1.21.5-pre3, 1.21.5-rc1, 1.21.5-rc2, 1.21.5, 25w14craftmine, 25w15a, 25w16a, 25w17a, 25w18a, 25w19a, 25w20a, 25w21a, 1.21.6-pre1, 1.21.6-pre2, 1.21.6-pre3, 1.21.6-pre4, 1.21.6-rc1, 1.21.6fabric, forge, neoforge, quilt
February 10, 2025
v1.1.5release
MC 19w08b, 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 20w14infinite, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 24w14potato, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 25w02a, 25w03a, 25w04a, 25w05a, 25w06a, 25w07a, 25w08a, 25w09a, 25w09b, 25w10a, 1.21.5-pre1, 1.21.5-pre2, 1.21.5-pre3, 1.21.5-rc1, 1.21.5-rc2, 1.21.5, 25w14craftmine, 25w15a, 25w16a, 25w17a, 25w18a, 25w19a, 25w20a, 25w21a, 1.21.6-pre1, 1.21.6-pre2, 1.21.6-pre3, 1.21.6-pre4, 1.21.6-rc1, 1.21.6datapack
February 10, 2025
Dragon Movement Fix v1.1.4release
MC 1.14, 1.14.1, 1.14.2, 1.14.3, 1.14.4, 1.15, 1.15.1, 1.15.2, 1.16, 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.18, 1.18.1, 1.18.2, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.4, 1.20, 1.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.5, 1.20.6, 1.21, 1.21.1, 1.21.2, 1.21.3, 1.21.4, 25w02a, 25w03a, 25w04a, 25w05a, 25w06afabric, forge, neoforge, quilt
January 19, 2025

How to Install Dragon Movement Fix on Your Server

1

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

2

Set datapack Loader

In the panel under "Egg", select the datapack loader and matching Minecraft version (26.1-snapshot-3).

3

Install Mod

Open the mod browser in the dashboard and search for "Dragon Movement Fix". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

datapackfabricforgeneoforgequilt

Minecraft Versions

26.1-snapshot-3, 26.1-snapshot-2, 26.1-snapshot-1 (+74 more)

Server-side

Required

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Dragon Movement Fix server crashes on startup – what to do?

Most common cause: wrong datapack version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (26.1-snapshot-3). You can switch loaders with one click in the panel.

Is Dragon Movement Fix compatible with datapack and fabric and forge and neoforge and quilt?

Dragon Movement Fix officially supports datapack, fabric, forge, neoforge, quilt for Minecraft 26.1-snapshot-3, 26.1-snapshot-2, 26.1-snapshot-1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Dragon Movement Fix – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Dragon Movement Fix consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.

Rent Modded Server

Install Dragon Movement Fix with just one click on your server.

Recommended RAM
4 GBab €8/mo
Min. 3 GB | +1 GB pro 8 Spieler
Create Server Now
1-Click Mod Install
NVMe SSD Storage
DDoS Protection included

Details

License
Creative Commons Attribution 4.0 International
Server-side
Required

Supported Versions

26.1-snapshot-326.1-snapshot-226.1-snapshot-11.21.111.21.101.21.91.21.81.21.71.21.61.21.6-rc1+67 more