Apex Mobility

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

| Key | Grappling Hook | Zipline |
| — | — | — |
| Forward | Reel in (sprint = harder) | Speed up |
| Back | Pay out cable | Slow down |
| Left / right | Swing sideways | — |
| Right click | Re-hook mid-air | Re-hook mid-air |
| Space | Launch with your momentum | Launch with your momentum |
| Shift | Cut the rope | Cut the rope |

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:

| #aim | Angle |
| — | — |
| 0 | ~61° |
| 1000 | ~45° |
| 1400 (default) | ~29° |

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.