Starting from 1.21, it was possible to make enchantments that repaired the enchanted item using a negative value for the damage_item component. However, as of 24w33a and up to the most recent snapshot 24w37a, this is no longer possible.
Steps to Reproduce:
Get the following item:
/give @p minecraft:netherite_chestplate[minecraft:damage=591]Enchant it with the following command:
/enchant @p testing:repair_damage_negative_testHold the damaged item in your mainhand
Expected Result:
The item continues to have one durability point repaired every 20 ticks, like before.
Actual Result:
The item is not repairing itself over time, it remains at it's current durability amount.
Attachments
Comments 2
An alternative would be to use an “Item Modifier” to change the damage of the item, but even doing this still an issue.
[media]"Set damage" only allows you to use a value between 0~1, being forced to calculate ( 1 / max_damage x amount of damage to repair). This is possible to achieve with a scoreboard, but due to the use of decimals, if the item uses an high max_damage value, it's possible that the result will give an erroneous decimal.
It would be much more appropriate (if this is possible) to revert the change that doesn't allow the use of negative values, or change the field of the “damage_item” effect, to allow discounting the damage value.
This seems intentional to me provided an item should only be damaged by a positive integer, but I've confirmed the report.