From a quick look at the code, I don't see a stat tracker related to step assist.

Currently there isn't a way to add it to your living armour (apart from getting it from creative). This is because I haven't found an elegant way to "train" step assist.

Is there a compelling reason to have it separate from the speed boost?
Maybe just grant it on rank 1 of speed

On Tue, Feb 16, 2016, 11:36 AM WayofTime [email protected] wrote:

Currently there isn't a way to add it to your living armour (apart from
getting it from creative). This is because I haven't found an elegant way
to "train" step assist.

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#619 (comment)
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Perhaps you could track the number of times the player makes a 1-block high jump and lands upward? For example, on player jump, take starting Y, then on land take the landing Y, and if end = start + 1, then bump the tracker? So then climbing up hills would make you gain a level of it

Well, all upgrades should be separated from each other, really. The idea is that there should never be a best combination.