I'm looking for a replacement for the abandonned Smart Moving mod. I can't play without climbing anymore, it makes life so much easier! And realistic. And just feels good.
Climbing: While airborne (i.e., after jumping or in free fall), moving forward against a solid block with air above makes the player move up, as if they were pulling to climb that block.
Charged jump: Pressing crouch key + jump key for a couple seconds charges a power jump up to 2.5 blocks high. (With climbing, it let's you climb up to 4 blocks)
Alternative if charged jump is too complicated: double jump.
(Optional) Grabbing a ledge: While airborne, pressing space (crouching) while against a ledge stops your vertical movement, as if you stayed hanging on the ledge.
(Optional) Crawling: double tap the crouch key to crawl. Lets you move through 1 block holes. Use the flying animation horizontally? Release crouch key to stop crawling.