Stealth

Stealth

New in this port — Stealth does not exist in upstream mcMMO.

How you train it: sneak, on the ground, under your own power.

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Earning XP

Stealth uses the same speed-normalised model as the movement skills: you are paid per second of qualifying sneak-travel, with each tick's distance clamped at a reference speed.

Setting (experience.yml → Experience_Values.Stealth.Sneak)	Default
Baseline_Xp_Per_Second	25.0
Reference_Speed	1.295 blocks/s

25 XP/s is the highest continuous rate in the mod — it maxes a RetroMode level-1000 skill in about 122 hours of continuous sneaking, versus ~204 h for Parkour on land. That's deliberate: sneaking is slow, tedious, and something players do in short bursts rather than to get anywhere.

The reference speed is derived as vanilla walk speed (4.317) × the sneaking_speed attribute default (0.3). At the default baseline that's ~19.3 XP per block — again, a derived number. Don't tune it.

Why the clamp matters even more here

Padfoot raises the vanilla sneaking_speed attribute from 0.3 toward 1.0 — so a maxed player sneaks more than three times faster than an unranked one. (Fleet Footed, for comparison, is worth about 20 %.) Paid per block, Padfoot would be a 3.3× multiplier on its own XP rate. Under the clamp, a maxed Padfoot player earns the same XP per second and simply covers more ground doing it.

What does not pay

	Why
Crouch-swimming	It's faster than the sneak reference speed, so it would always sit at the clamp — making "hold shift in a water current" the optimal way to level. Ground only.
Being carried	Boats, minecarts, pistons, water currents. See below.
Standing still while sneaking	No distance, no XP.

The anti-AFK gate

experience.yml → ExploitFix.Stealth.Require_Movement_Input: true

Sneak-distance is the most farmable XP source in the mod — a taped-down shift key in a water current, on a moving boat, or on a piston loop all change your position without you being at the keyboard.

This gate reads your actual server-side input state, so being carried earns nothing while walking under your own power earns normally.

Leave this on. It exists as an escape hatch, not a balance knob: if a client ever stopped sending input packets, the gate would silently reduce Stealth XP to zero rather than merely mis-tune it. If Stealth is earning nothing at all, this is the first thing to test — see Troubleshooting.

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Sub-skills

RetroMode unlock levels shown.

Padfoot — unlocks at 1

Sneak almost as fast as you walk.

Raises the vanilla sneaking_speed attribute, up to MaxSneakSpeedBonus: 0.7 at max level.

That attribute is a clamped one (0.3 default, hard ceiling 1.0), and vanilla's own ceiling is walking speed — so no value you put in the config can make sneaking faster than walking. The shipped 0.7 lands a maxed player exactly at walking speed.

It also applies while crawling, since vanilla uses the same attribute for the crawling pose. Squeezing through a 1-block gap is faster too.

Assassin — unlocks at 150

Strike from the shadows for far greater damage.

A backstab: hit harder while sneaking, if you haven't been hit recently.

Setting	Default	Meaning
MaxDamageBonus	1.0	A fraction, not a multiplier — 1.0 means double damage at max level.
NoDamageWindowTicks	100	How long you must go without taking damage for a hit to count. 100 ticks = 5 seconds.

The 5-second window is tuned so you cannot trade blows and keep stabbing, but it's short enough to break contact and re-enter stealth inside a single fight.

⚠️ The damage bonus is multiplicative, so it compounds with your weapon skill's own on-hit bonus and with a vanilla crit. That's the point of the sub-skill — and it's also the single most likely thing in this skill to be over-tuned. Test it against an armoured mob before trusting it.

Assassin cannot stack with Agility's Smash. Smash requires sprinting and Assassin requires sneaking, and you can't do both at once.

Smoke Bomb — unlocks at 250

Vanish in a puff of nothing at all. Stealth's super ability.

Right-click while holding gunpowder (Skills.Stealth.Smoke_Bomb_Item, never consumed). Applies vanilla Invisibility for 100 ticks (5 s), with no firework and no particle burst. Cooldown 240 s.

Vanilla Invisibility does not hide armour or held items. A fully armoured player using this is still very visible. That is vanilla behaviour, not a bug — and since you'll often be using Stealth alongside Unarmored, it may not come up.

Because it's item-triggered rather than tool-readied, it does not use the two-step ready/activate gesture — see Super Abilities.

⚠️ The Smoke Bomb item must differ from Agility's Second Wind item. Both actives listen on the same use-item event, so sharing an item fires one and prints the other's refusal message.

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Not implemented

Thief — "mobs notice you less while sneaking" — is deliberately absent, not present-and-disabled. It needs a mixin on mob target selection. A dead enum constant with no ranks, no config and no behaviour reads as a half-wired sub-skill to everything that iterates the skill list, /mcstats included, so it isn't there at all.

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Tuning

File	Section
experience.yml	Experience_Values.Stealth.Sneak — baseline and reference speed
experience.yml	ExploitFix.Stealth.Require_Movement_Input
advanced.yml	Skills.Stealth.{Padfoot,Assassin,SmokeBomb}
skillranks.yml	Stealth.* — unlock levels
config.yml	Skills.Stealth — level cap, Smoke_Bomb_Item
config.yml	Abilities.Cooldowns.Smoke_Bomb