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Updated-NoCheatPlus / NoCheatPlus

Anti-cheating plugin for Minecraft (1.5-1.21, Bukkit/Spigot)
https://ci.codemc.io/job/Updated-NoCheatPlus/job/Updated-NoCheatPlus/
GNU General Public License v3.0
484 stars 100 forks source link

SurvivalFly check is too strict. #13

Closed dovidas147 closed 4 years ago

dovidas147 commented 4 years ago

Full output of /ncp version

https://i.imgur.com/C8MZ3DD.png

Describe the issue

Whenever people jump and get shot by projectile in mid air, they're pulled down to ground and flagged as survivalfly.

How to reproduce the issue

Place a dispenser and add arrows to it, make a redstone clock and try to get hit in midair. Or get some people to shoot at you.

Extra links/Videos (Including debug logs)

Proof 1: https://streamable.com/qr2lpn Proof 2: https://streamable.com/v38p6m NCP logs: https://anonfiles.com/ddc0Adxeo9/nocheatplus_log

Any possible config options changed or plugins that may cause interference?

I'm using custom made NCP config. But it doesn't matter because even without it it persists.

CaptainObvious0 commented 4 years ago

I'm unable to reproduce the issue described. Do you have any plugins that modify knockback? Have you changed the value disable-relative-projectile-velocity in the paper spigot configuration?

Your debug log is missing information. You will need to do /ncp debug player (player), reproduce the issue, and then post that log here.

Some things you could play around with are the velocity settings in the configuration. Try lowering/raising the values here: velocity: activationcounter: 80 activationticks: 140 strictinvalidation: true

dovidas147 commented 4 years ago

fork of spigot (imanitySpigot) modifies knockback. Maybe that's the case?

dovidas147 commented 4 years ago

That was my custom knockback issue. I changed it and it works now. Thank you for your 200IQ thinking. Closed

CaptainObvious0 commented 4 years ago

Yes, if you're changing how velocity works then you will see flags. By default NoCheatPlus will handle velocity as if it's untouched, so it doesn't know how to handle when velocity has been modified.

The only recommendation I would suggest is playing around with the config options I suggested. First try lowering activationcounter and see how that works out.