I made movement mod that adds a momentum-based sliding mechanic.

Adds a momentum-based sliding mechanic to Minecraft.
– Omni-Directional Sliding: Move in any direction based on your WASD input, not just where you're looking. Back-sliding and side-sliding are fully supported.
– Velocity Inheritance: Your sliding power scales with your speed. Combine it with sprinting, falling, or even Elytra flight for massive momentum.
– Slide Jumping: Jumping between 0.2s and 0.4s after starting a slide carries your momentum for a longer, faster jump.
– Downhill Momentum: Sliding down slopes or drops slightly extends your slide duration.
– Activation Speed: Works at walking speeds (with less power) but is most effective while sprinting.
– Fatigue System: Each slide adds 20 fatigue (max 100). Higher fatigue reduces slide power. Recovers at 30 pts/sec.
– Boosted Slide: When fatigue is 0, your next slide gets a speed boost but costs 40 fatigue.
– Tactical Hitbox: Your hitbox shrinks to 1 block high during a slide, allowing you to pass through narrow gaps.

Download: curseforge [fabric/forge 1.20.1]

Credits: The animations and fundamental principles are based on HyperSlide by Thebugger4.