Admincraft•12mo ago

Patch item swapping

Axe stunning, mace swapping, sword swapping etc. how to fix?

Admincraft Meta•1/10/25, 3:47 AM

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Requested by ashanki#0

•

1/10/25, 3:47 AM

Cubicake•1/10/25, 5:47 AM

um english plz?

CCubicake um english plz?

AshankOP•1/10/25, 5:59 AM

Sword swapping in hypixel

AAshank Sword swapping in hypixel

Cubicake•1/10/25, 6:06 AM

you want to patch an issue in hypixel???

AshankOP•1/10/25, 6:06 AM

No. It's the same bug

AshankOP•1/10/25, 6:07 AM

In pepper

AshankOP•1/10/25, 6:07 AM

*paper

Cubicake•1/10/25, 6:08 AM

whats the bug?

Cubicake•1/10/25, 6:08 AM

In hypixel its their fancy projectile weapons taking the stat of whatever's in ur hand right

AshankOP•1/10/25, 6:09 AM

Yes

AshankOP•1/10/25, 6:09 AM

Lemme send video

AshankOP•1/10/25, 6:09 AM

https://www.youtube.com/live/SLODB_VK2Es?si=6ZPS53Rb4bAXWsKu

YouTubeScilan Gaming

This bug will change PvP FOREVER

A quick stream explaining a cool bug.A bug known as:Attribute swapping1 tickingsword disablinghit swappingsword swappingthe cooldown trickbreach swappingIt g...

Cubicake•1/10/25, 2:21 PM

Why does that suddenly become a kenadian vid a few mins in lol

Biquaternions•1/10/25, 3:29 PM

You think this might be related?
Doesn’t seem like it according to the video (at least the start, I haven’t watched it completely)

https://github.com/PaperMC/Paper/issues/11552

GitHub

Swapping items and attacking will (for a split second) make player....

Expected behavior Code Using EntityDamageByEntityEvent: if (attackingPlayer.getAttackCooldown() == 1.0) { damagedPlayer.setFoodLevel(Math.max(damagedPlayer.getFoodLevel() - foodLevelReduction, 0));...

BBiquaternions You think this might be related? Doesn’t seem like it according to the video (at...

AshankOP•1/11/25, 2:45 AM

The start is the only important thingy

BBiquaternions You think this might be related? Doesn’t seem like it according to the video (at...

AshankOP•1/11/25, 2:45 AM

Yeah that seems like it

Cooleg•1/12/25, 11:50 PM

yeah so basically heres the thing right

Cooleg•1/12/25, 11:51 PM

something like this would to my knowledge require either extreme overhauls of how minecraft manages items or alternatively adding a 1 tick delay to item swaps in relation to attacking

Cooleg•1/12/25, 11:53 PM

(or any other action related to attributes updating)

Cooleg•1/12/25, 11:54 PM

the problem is theres countless ways an item can have an attribute changed and it would be essentially impossible to track it well

CCooleg something like this would to my knowledge require either extreme overhauls of ho...

Cooleg•1/12/25, 11:57 PM

oh or the other option is add checks anywhere that attributes apply to ensure it actually matches with the held items (but not too many places or it might lag stuff out)

Cooleg•1/12/25, 11:58 PM

which would probably be a pain

CCooleg oh or the other option is add checks anywhere that attributes apply to ensure it...

Cooleg•1/13/25, 12:39 AM

im kinda curious just how much this would affect perf, might test it

AshankOP•1/13/25, 2:15 AM

might need to test that as well

Cooleg•1/13/25, 4:04 AM

i didnt do the most thorough job with this so the performance impact will def be worse than it needs to be but have fun https://github.com/TrollsterCooleg/PaperTest/releases/tag/patchitemswap

GitHub

Release 1.21.4 Paper - Item Swap Patch · TrollsterCooleg/PaperTest

NO SUPPORT WILL BE GIVEN FOR THIS.

Cooleg•1/13/25, 4:05 AM

it almost definitely does more checks than it needs to

Cooleg•1/13/25, 4:08 AM

an ideal ideal solution would be like 20x harder so oh well, it still overall performs fine and the perf isnt actually noticably worse anyways its a tiny difference really

Cooleg•1/13/25, 8:03 PM

(@Ashank just gonna ping you in case you actually want to use it)

CCooleg (@Ashank just gonna ping you in case you actually want to use it)

AshankOP•1/13/25, 10:33 PM

Cooleg•1/15/25, 6:59 PM

depending on if im bored enough i may in theory continue updating this if anyone asks for it in here (ping me!) but no guarentees

Cooleg•1/15/25, 7:00 PM

at least until someone smarter or more patient than me does it a better way so it has a legitimate chance to be merged into paper

Cooleg•1/15/25, 7:01 PM

unless im not feeling bored enough to continue maintaining it in which case if someone else is desperate to use this low quality fix they can maintain it themselves

Cooleg•3/11/25, 12:20 AM

Reviving this dead thread to say that as of yesterday this has been fixed in most updated paper version

Cooleg•3/11/25, 12:20 AM

1.21.4 Build #207 for those who care

Cooleg•3/11/25, 12:21 AM

https://github.com/PaperMC/Paper/commit/743346a5da36015063d834ecd6013fa40913e5f8 the git commit in case you want to recreate the patch yourself or whatever

GitHub

Force update attributes · PaperMC/Paper@743346a

See https://github.com/PaperMC/Paper/pull/12241/

Cubicake•3/13/25, 3:55 AM

woo

Cooleg•3/13/25, 12:39 PM

(they also added a config option yesterday to allow you to toggle the fix off for things like pvp servers)

Cooleg•3/13/25, 12:40 PM

so you arent stuck with the patch if you don't want it