Apex Mobility

The Ultimate Mobility Pack, featuring 3 core items:

🪝 Grappling Hook — Swing through the air with real momentum, and get thrown by it when you let go.

🚠 Zipline — Fire at anything in sight and get pulled to it in a dead straight line.

🕷️ Sticky Boots — Climb any wall like a spider. Craft from any boots, enchantments intact.

Vanilla datapack, Minecraft 26.2. No mod needed.

Install

Drop the folder into <world>/datapacks/. That is all — the pack registers itself on the vanilla tick and load tags.

Then enable resourcepack/: it holds the item textures, so without it the six grappling hooks and ziplines render as a missing model. It also adds French; English is built into the datapack.

Controls

Launching throws you along your momentum — the faster you move, the further you fly. It fires compressed-air bursts beneath you, the way ODM gear works in Attack on Titan. Sneak instead cuts the rope: you drop from where you are, with a second of slow falling, for when you just want off.

Sticky Boots: walk into a wall to climb, sneak to go back down.

Recipes

	Iron — 48 blocks, 480 uses	Diamond — 64 blocks, 1056 uses	Netherite — 80 blocks, 2112 uses
Grappling Hook
Zipline

	Any boots, enchantments and damage preserved
Sticky Boots

Tuning

All constants are in grapple/load.mcfunction, in milliblocks per tick (1000 = 1 block/tick): #drag, #gravity, #vmax, #zip_speed, #reel_in…

#aim sets the launch angle — the height the wind charge converges on, which is what decides the arc. Measured at 0.8 blocks/tick release:

Negative fires from under you, launching nearly straight up. Launch power comes from the number of wind charges, which stack: 1 below 1.0 block/tick, 2 up to 2.0, 3 beyond.

Using it in a map

Items come from loot tables, so nothing has to be duplicated:

apex_mobility:grapple/item[_tier2|_tier3]
apex_mobility:zipline/item[_tier2|_tier3]

loot give @s loot apex_mobility:grapple/item_tier2, or reference the table from a chest, trade or reward. Items are identified by custom data, so renaming one in an anvil does not break it.

How it works

On a cable you ride an invisible armor stand whose position the pack integrates itself each tick, colliding against the player's width rather than the carrier's — that is what keeps you out of walls at awkward angles.

Letting go destroys the carrier and hands you back to your own client, which is smoother than any server-driven vehicle. A wind charge carries your momentum across, because writing Motion onto a player does nothing: the server only sends a velocity packet on a real knockback.

Part of a larger project, still to come. MIT licensed.