Elytra HUD

A vanilla data pack for Minecraft Java. While you glide with an elytra, the actionbar shows:

Speed 32.4 b/s   Y 187   ▼ 3.2 b/s

• Speed: total speed in blocks per second, one decimal
• Y: your altitude
• ▲ / ▼: climb (green) or sink (red) rate in blocks per second

No mods, no resource pack. Works in singleplayer and on servers, for every player separately.

Requirements

Minecraft Java Edition 26.1 to 26.3.

Install

1. Download elytra-hud.zip.
2. Put the zip (do not unpack it) into your world's datapacks folder:
   • Singleplayer: Edit world → Open world folder → datapacks, or pick it under Data Packs when creating a world.
   • Server: world/datapacks/.
   • CurseForge app: it shows "This profile's Data packs need to be loaded manually" because vanilla Minecraft only loads data packs per world. That is expected: download the zip and put it into the world's datapacks folder as above. To load it in every world automatically instead, use a Fabric or NeoForge profile with a data pack loader mod such as Global Packs (26.1 to 26.3) and follow its instructions.
3. Run /reload (or rejoin the world). /datapack list should show file/elytra-hud.zip.

Use

• Just glide. The HUD appears on its own and disappears when you land.
• /trigger elytra_hud turns it off or on again for yourself (no operator rights needed).

Uninstall

Run /function elytra_hud:uninstall (removes its scoreboards), then /datapack disable "file/elytra-hud.zip" and delete the zip.

Source and bugs

Source code, issues and the changelog: github.com/christoph-teichmeister/elytra-hud. MIT licensed.