Moves Like Mafuyu

Holding sneak while sprinting triggers a slide, which grants a modest speed increase and lets the player fit through openings only one block tall. When the slide time runs out the player goes back to sprinting. Jumping or moving backward cancels a slide, and backward movement does not restore sprinting. Each time a slide leaves the ground its timer resets, which lets a player keep sliding down sloped ground.

Sliding onto water makes the player bounce slightly and continue forward, a behavior the mod calls water skipping. The default limit is two skips. Sliding into an entity directly ahead knocks it away and costs the slider some momentum. Climbing works on two-block-high obstacles when the player faces them and jumps, and the mod treats the block as if invisible ladders stood around its upper part. A climb is refused when the block overhead lacks solid rendering, as with slabs, foliage or ice, and also when the barrier is merely one block high. Holding sneak on a climbable surface and pressing jump gives a normal jump, which helps with three-block-high obstacles.

The mod is published for Fabric, Forge and NeoForge across 20 release versions, 1.19 – 26.2, and it runs on client and server, so both the server and each player need it. The code is open source under the GNU General Public License v3.0 only.