Worn Tear

Durability drives the effect. As an item loses durability its efficiency for mining and its weapon damage change, following a curve that the server owner defines per item. A wooden axe can be set to keep a fixed 400% efficiency at any durability, while shears can be set to lose efficiency in a straight line as they wear, dropping to 0% when their durability reaches zero. Armor toughness can be linked to durability in the same way.

The mod is configured through a file rather than in-game. Each item's curve is set with coefficients, so a flat rule, a linear fall-off or a stepped change between durability thresholds can all be written down. For example, an iron shovel can hold a base efficiency of 30% until its durability falls below 40%, then keep 30% from there, while a range between 40% and 50% changes linearly. Enabling the tooltip coefficient display shows the resulting effect on each item, so the curve can be checked without testing it in play.

Worn Tear runs on the server and is published for Forge only, for 1.20.1 – 1.20.6. The server must run it, and players may add it to see tooltip values. The code is open source under the GNU General Public License v3.0 only, and the source code and issue tracker are public.