Grim Anticheat

Warning! Grim NOW REQUIRES Java 17+. See https://github.com/GrimAnticheat/Grim/wiki/Updating-to-Java-17 for more information.

Notably with this update comes with support for 1.21.2+ clients, where Mojang has thankfully added a new END_TICK packet. This means Grim can now be as accurate with 1.21.2+ clients as it is with 1.8 clients, particularly for reach checks. Mojang also added a PLAYER_INPUT packet, which tells us the inputs of the player. This will allow a significant performance boost.

Known issues:

• If you are using an older server version then we currently cannot listen to these to these new packets from 1.21.2+ clients due to ViaVersion blocking them.
• If you use ViaBackwards on a 1.21.2+ server, this will cause issues for older clients in vehicles. A fix for both of these issues, by bypassing ViaVersion with a PacketEvents fork, is being worked on.

Changes:

• Added support for camel simulation (SamB440)
• Added MiniMessage and PlaceHolderAPI Support (ManInMyVan)
• Use an identity hash set for synced tags (SamB440)
• Improved punishment manager performance (AoElite)
• Don't let setbacks bypass stuck speed (SamB440)
• Fixed timer ping-abuse-limit-threshold, patching some timer balance abuse hacks (SamB440)
• Readded and fixed BadPacketsG (SamB440)
• Fixed riptide falses when colliding with teamed entities (Axionize)
• Fixed offground precision loss to make us consistent 1E-15 offset (SamB440)
• Added support for 1.21.3+ clients and servers (SamB440)
• Patched a Paper dupe for outdated servers (ManInMyVan)
• Fixed wrongly ported Reach changes (Cyramek)
• Use movementThreshold() instead of 0.03 where appropiate (Axionize)
• Warn servers that want extra reach accuracy that they need to add -Dpaper.explicit-flush=true (Axionize)
• Fixed reading world asynchronously on Folia (Rothes)
• Optimised MenuType#getMenuType (MachineBreaker)
• Use FastUtil collections where possible (MachineBreaker)
• Updated to Java 17 (SamB440)
• Fixed shields breaking causing NoSlow falses (ManInMyVan)
• Limited when 1.9+ players can increase attack slow (SamB440)
• Lava and water are now filtered out of FINISHED_DIGGING (SamB440)
• Color codes are now stripped from client brand (jonesdevelopment)
• Allowed exempting elytras in a hidden config option (ManInMyVan)
• Packets are no longer re-encoded by default (AoElite)
• Reduced Optional allocations with attribute methods (SamB440)
• Readded and fixed AimModulo360 (SamB440)
• Having fix-1_21-placement-rotation enabled in the ViaVersion will now print an error on startup due to incompatibility (Cyramek)
• Fix incorrect casting to float before clamping attribute values (Axionize)
• max-transaction-time option is now clamped between 1 and 180 to prevent issues (SamB440)
• Optimised getPossibleEyeHeights (Axionize)
• Added MultiInteract checks (ManInMyVan)
• NegativeTimer can now be configured to setback (ManInMyVan)
• Added MultiPlace check (ManInMyVan)
• Reworked all collision boxes and hitboxes to improve performance and fix falses (Axionize)
• Added Japanese translation (K-Lqrs)
• Fixed a FastBreak false when mining vines with a sword (ManInMyVan)
• Fixed some falses with BadPacketsX & Z (ManInMyVan)