You can use the minecraft:generic.attack_knockback attribute to change the attack knockback of a mob. But if you try to do this with players it does not work. It says entity name has no Attribute Attack Knockback. For mobs it works fine.
How to reproduce:
Run this command: /attribute @s minecraft:generic.attack_knockback base set 0
It fails.
minecraft:generic.flying_speed has the same issue.
It seems like minecraft:generic.flying_speed also does not work on mobs.
This also doesn’t work if you have the attribute on an item. You can for example use this command:/give @p minecraft:stick{AttributeModifiers:[{AttributeName:"generic.attack_knockback",Name:"generic.attack_knockback",Amount:10,Operation:0,UUID:[I;5,5,5,5],Slot:"mainhand"}]} 1 and the attribute of the item will only work on mobs.
Related issues
is duplicated by
MC-180765
Attack Knockback attribute doesn't work on items.
MC-182367
players don’t have an attack knockback attribute value
MC-194338
Problem with attribute "flying_speed"
MC-199161
Attribute "generic.attack_knockback" doesn't work for iron golems
MC-268325
`minecraft:generic.flying_speed` does not work for players
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migrated
migrated
Also relates to MC-138868.
slicedlime
Not all entities have the same attributes.
Adding an attack knockback attribute for players is a feature request.
migrated
But why don’t have players an attack knockback attribute? I don’t see any reason for them to not have this attribute.
migrated
Wait, players are not intended to have this basic attribute?