Nex-AC - Anticheat system

Nex Anticheat (Nex-AC) - is a comprehensive protection which combines powerful anticheat and protection against various attacks (flood, DoS).
Anticheat detects popular cheats instantly punishing cheaters.
Anti-DoS combines customizable anti-flood, anti-DoS at network level and a lot of protection tools against hacking, crashers etc.

List of basic anti-cheats:

• Anti-AirBreak (onfoot/in vehicle)
• Anti-teleport hack (onfoot/into/in/between vehicles)
• Anti-teleport (pickups)
• Anti-FlyHack (onfoot/in vehicle)
• Anti-SpeedHack (onfoot/in vehicle)
• Anti-Health hack (onfoot/in vehicle) and armour hack
• Anti-Weapon hack and (add/infinite) ammo hack
• Anti-Special actions hack (including jetpack)
• Anti-GodMode from bullets (onfoot/in vehicle)
• Anti-Invisible hack
• Anti-Money hack
• Anti-Tuning hack
• Anti-lagcomp-spoof
• Anti-Parkour mod
• Anti-Quick turn
• Anti-Rapid fire
• Anti-FakeSpawn
• Anti-FakeKill
• Anti-Pro Aim
• Anti-CJ run
• Anti-CarShot
• Anti-CarJack
• Anti-UnFreeze
• Anti-AFK Ghost
• Anti-Reconnect
• Anti-High ping
• Anti-Fake NPC
• Anti-Dialog hack
• Protection from sandbox
• Protection from invalid version
• Protection from flood by seat changing
• Protection from connection flood in one slot
• Anti-Rcon hack (brute/brute-force)
• Anti-callback functions flood (complete list below)
• Anti-crashers (complete list below)
• Anti-NOPs (complete list below)
• Anti-DoS

Additional features:

• Setting anticheat from file
  The settings is located in a separate file (scriptfiles\nex-ac_settings.cfg)
• Statistics viewing
  Ability to view statistics of the anticheat for all the time of server work since its launch
  Displayed automatically when the server turns off. Stored in a server log (server_log.txt)
• Logging the most important actions
  Optionally, you can enable debug-mode for logging all actions
• Multilingual
  Ability to set any of the available languages
  It also simplifies the process of translation of anticheat into other languages

List of publics which are protected by anti-flood:

• OnDialogResponse
• OnEnterExitModShop
• OnPlayerClickMap
• OnPlayerClickPlayer
• OnPlayerClickTextDraw
• OnPlayerCommandText
• OnPlayerEnterVehicle
• OnPlayerExitVehicle
• OnPlayerPickUpPickup
• OnPlayerRequestClass
• OnPlayerSelectedMenuRow
• OnPlayerStateChange
• OnVehicleMod
• OnVehiclePaintjob
• OnVehicleRespray
• OnVehicleDeath
• OnPlayerText
• OnPlayerEnterCheckpoint
• OnPlayerLeaveCheckpoint
• OnPlayerRequestSpawn
• OnPlayerExitedMenu
• OnPlayerEnterRaceCheckpoint
• OnPlayerLeaveRaceCheckpoint
• OnPlayerClickPlayerTextDraw
• OnVehicleDamageStatusUpdate
• OnPlayerSelectObject

Anti-NOPs:

• SpawnPlayer
• SetPlayerPos
• SetVehiclePos
• SetPlayerAmmo
• SetPlayerHealth
• SetPlayerArmour
• SetVehicleHealth
• GivePlayerWeapon
• SetPlayerPosFindZ
• SetPlayerInterior
• PutPlayerInVehicle
• ResetPlayerWeapons
• SetPlayerSpecialAction
• TogglePlayerSpectating
• RemovePlayerFromVehicle

Anti-Crashers:

• Invalid tuning
• Invalid vehicle seat
• Illegal characters in the dialogs (deleting)
• Invalid attached objects
• Weapon Crasher

Functions:

public OnCheatDetected(playerid, ip_address[], type, code)

Called when triggers one of the anti-cheats

• playerid - The ID of the cheater
• ip_address[] - IP-address of the cheater
• type - Type of cheating (when 0 it returns the ID, when 1 - IP)
• code - The code (ID) of the anti-cheat
• This callback does not handle returns

EnableAntiCheat(code, enable)

Use to enable/disable one of the anti-cheats

• code - The ID of the anti-cheat
• enable - 1 to enable/0 to disable
• Returns 1 (true) if the function executed successfully or 0 (false) if the code parameter contains an invalid ID of the anti-cheat

EnableAntiCheatForPlayer(playerid, code, enable)

Use to enable/disable one of the anti-cheats for a specific player

• playerid - The ID of the player to enable/disable the anti-cheat for
• code - The ID of the anti-cheat
• enable - 1 to enable/0 to disable
• Returns 1 if the function executed successfully, 0 if the player is not connected or -1 if the code parameter contains an invalid ID of the anti-cheat

Added in v1.3:

IsAntiCheatEnabled(code)

Use to check whether one of the anti-cheats is enabled/disabled

• code - The ID of the anti-cheat to check
• Return 1 (true) if enabled or 0 (false) if disabled

IsAntiCheatEnabledForPlayer(playerid, code)

Use to check whether one of the anti-cheats is enabled/disabled for a specific player

• playerid - The ID of the player to be checked whether the anti-cheat is enabled/disabled for him
• code - The ID of the anti-cheat to check
• Return 1 (true) if enabled or 0 (false) if disabled

Added in v1.8.8:

AntiCheatGetHealth(playerid, &Float:health)

Use to get the amount of the player's health (according to anticheat data)

• playerid - The ID of the player to get the health of
• &Float:health - A variable to store the health in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the player is not connected

AntiCheatGetArmour(playerid, &Float:armour)

Use to get the amount of the player's armour (according to anticheat data)

• playerid - The ID of the player to get the armour of
• &Float:armour - A variable to store the armour in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the player is not connected

AntiCheatGetVehicleHealth(vehicleid, &Float:health)

Use to get the amount of the vehicle's health (according to anticheat data)

• vehicleid - The ID of the vehicle to get the health of
• &Float:health - A variable to store the health in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the vehicle does not exist

AntiCheatGetWeaponData(playerid, slot, &weapons, &ammo)

Use to get the weapon and ammo in a specific player's weapon slot (according to anticheat data)

• playerid - The ID of the player whose weapon data to retrieve
• slot - The slot to get the weapon and ammo for
• &weapons - A variable to store the weapon ID in, passed by reference
• &ammo - A variable to store the ammo in, passed by reference
• Returns 1 if the function executed successfully, 0 if the player is not connected or -1 if the slot specified is invalid

AntiCheatGetSpawnWeapon(playerid, &weapon1, &weapon1_ammo, &weapon2, &weapon2_ammo, &weapon3, &weapon3_ammo)

Use to get the spawn weapons and ammo of a player

• playerid - The ID of the player whose spawn weapons and ammo to retrieve
• &weapon1 - A variable in which to store weapon 1, passed by reference
• &weapon1_ammo - A variable in which to store the amount of ammo for weapon 1, passed by reference
• &weapon2 - A variable in which to store weapon 2, passed by reference
• &weapon2_ammo - A variable in which to store the amount of ammo for weapon 2, passed by reference
• &weapon3 - A variable in which to store weapon 3, passed by reference
• &weapon3_ammo - A variable in which to store the amount of ammo for weapon 3, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the player is not connected

AntiCheatGetPos(playerid, &Float:x, &Float:y, &Float:z)

Use to get the position of a player (according to anticheat data)

• playerid - The ID of the player to get the position of
• &Float:x - A variable to store the x coordinate in, passed by reference
• &Float:y - A variable to store the y coordinate in, passed by reference
• &Float:z - A variable to store the z coordinate in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the player is not connected

AntiCheatGetVehicleVelocity(vehicleid, &Float:x, &Float:y, &Float:z)

Use to get the velocity of a vehicle (according to anticheat data)

• vehicleid - The ID of the vehicle to get the velocity of
• &Float:x - A variable to store the x velocity in, passed by reference
• &Float:y - A variable to store the y velocity in, passed by reference
• &Float:z - A variable to store the z velocity in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the vehicle does not exist

AntiCheatGetSpeed(playerid)

Use to get the speed of a player

• playerid - The ID of the player to get the speed of
• Returns the player's speed or 0 if the player is not connected

AntiCheatGetAnimationIndex(playerid)

Use to get the index (ID) of the player's current animation (according to anticheat data)

• playerid - The ID of the player to get the animation index of
• Returns the ID of the animation or 0 if the player is not connected

AntiCheatGetDialog(playerid)

Use to get the ID of the opened dialog for a player

• playerid - The ID of the player to get the active dialog ID for
• Returns the ID of the dialog or -1 if the player is not connected

AntiCheatGetEnterVehicle(playerid)

Use to get the ID of the vehicle a player attempted to enter last time

• playerid - The ID of the player to get the last entered vehicle ID of
• Returns the ID of the entered vehicle or 0 if the player is not connected

AntiCheatGetVehicleID(playerid)

Use to get the ID of the vehicle a player is currently in (according to anticheat data)

• playerid - The ID of the player in the vehicle to get the ID of
• Returns the ID of the vehicle or 0 if the player is not connected

AntiCheatGetWeapon(playerid)

Use to get the ID of the player's current weapon (according to anticheat data)

• playerid - The ID of the player to get the currently held weapon of
• Returns the ID of the weapon or -1 if the player is not connected

AntiCheatGetVehicleSeat(playerid)

Use to get the seat of the vehicle a player is currently in (according to anticheat data)

• playerid - The ID of the player to get the seat of
• Returns the ID of the seat or -1 if the player is not connected

AntiCheatGetSpecialAction(playerid)

Use to get the ID of the player's special action (according to anticheat data)

• playerid - The ID of the player to get the special action of
• Returns the ID of the special action or 0 if the player is not connected

AntiCheatGetLastSpecialAction(playerid)

Use to get the ID of the player's previous special action

• playerid - The ID of the player to get the previous special action of
• Returns the ID of the previous special action or 0 if the player is not connected

AntiCheatGetLastShotWeapon(playerid)

Use to get the ID of the last weapon a player shot from

• playerid - The ID of the player to get the last shot weapon ID of
• Returns the ID of the last shot weapon or -1 if the player is not connected

AntiCheatGetLastPickup(playerid)

Use to get the ID of the last pickup which a player picked up

• playerid - The ID of the player to get the last picked up pickup ID of
• Returns the ID of the last picked up pickup or -1 if the player is not connected

AntiCheatGetLastUpdateTime(playerid)

Use to get the player's last update tick

• playerid - The ID of the player to get the last update tick of
• Returns the tick of the last update or 0 if the player is not connected

AntiCheatGetLastReloadTime(playerid)

Use to get the player's last weapon reload tick

• playerid - The ID of the player to get the last reload tick of
• Returns the tick of the last reload or 0 if the player is not connected

AntiCheatGetLastEnteredVehTime(playerid)

Use to get the player's last entering vehicle attempt tick

• playerid - The ID of the player to get the last entering vehicle attempt tick of
• Returns the tick of the last entering attempt or 0 if the player is not connected

AntiCheatGetLastShotTime(playerid)

Use to get the player's last weapon shot tick

• playerid - The ID of the player to get the last shot tick of
• Returns the tick of the last shot or 0 if the player is not connected

AntiCheatGetLastSpawnTime(playerid)

Use to get the player's last spawn tick

• playerid - The ID of the player to get the last spawn tick of
• Returns the tick of the last spawn or 0 if the player is not connected

AntiCheatIntEnterExitsIsEnabled(playerid)

Use to check whether the enter/exit markers in interiors are enabled/disabled for a player

• playerid - The ID of the player to check
• Returns 1 (true) if enabled or 0 (false) if disabled

AntiCheatStuntBonusIsEnabled(playerid)

Use to check whether stunt bonus is enabled/disabled for a player

• playerid - The ID of the player to check
• Returns 1 (true) if enabled or 0 (false) if disabled

AntiCheatIsInModShop(playerid)

Use to check whether a player is in ModShop or not

• playerid - The ID of the player to check
• Returns 1 (true) if it is or 0 (false) if it is not

AntiCheatIsFrozen(playerid)

Use to check whether a player is frozen or not

• playerid - The ID of the player to check
• Returns 1 (true) if frozen or 0 (false) if not frozen

AntiCheatIsDead(playerid)

Use to check whether a player is dead or not

• playerid - The ID of the player to check
• Returns 1 (true) if dead or 0 (false) if not dead

AntiCheatIsConnected(playerid)

Use to check whether a player is on the server or not

• playerid - The ID of the player to check
• Returns 1 (true) if it is or 0 (false) if it is not

Added in v1.9.37:

public OnCheatWarning(playerid, ip_address[], type, code, code2, count)

Called when triggers any warnings of one of the anti-cheats

• playerid - The ID of the suspected cheater
• ip_address[] - IP-address of the suspected cheater
• type - Type of cheating (when 0 it returns the ID, when 1 - IP)
• code - The code (ID) of the anti-cheat
• code2 - The subcode (ID) of the anti-cheat check
• count - Count of warnings triggered on suspected cheater
• This callback does not handle returns

public OnFloodWarning(playerid, publicid, count)

Called when triggers any anti-flood warnings on one of the protected publics

• playerid - The ID of the suspected flooder
• publicid - The ID of the public that was called too quickly
• count - Count of warnings triggered on suspected flooder
• This callback does not handle returns

public OnNOPWarning(playerid, nopid, count)

Called when triggers any NOP warnings on one of the protected functions

• playerid - The ID of the suspected cheater
• nopid - The ID of the NOP check
• count - Count of warnings triggered on suspected cheater
• This callback does not handle returns

AntiCheatKickWithDesync(playerid, code)

Use to kick with desync a specific player by the anticheat

• playerid - The ID of the player who will be kicked with desync for the delay time
• code - The ID of the anti-cheat (with some codes the player's vehicle will be resynced after his disconnection)
• Returns 1 if the function executed successfully, 0 if the player is not connected or -1 if the player has already been kicked

AntiCheatIsKickedWithDesync(playerid)

Use to check whether a player is (being) kicked or not

• playerid - The ID of the player to check
• Returns 1 for kick onfoot, 2 for kick in a vehicle (driver), 3 if player is already disconnected or 0 if he isn't kicked

Added in v1.9.40:

AntiCheatGetSpawnPos(playerid, &Float:x, &Float:y, &Float:z)

Use to get the spawn position of a player

• playerid - The ID of the player to get the spawn position of
• &Float:x - A variable to store the x coordinate in, passed by reference
• &Float:y - A variable to store the y coordinate in, passed by reference
• &Float:z - A variable to store the z coordinate in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the player is not connected

Added in v1.9.41:

EnableAntiNOP(nopcode, enable)

Use to enable/disable one of the anti-NOPs

• nopcode - The ID of the anti-NOP
• enable - 1 to enable/0 to disable
• Returns 1 (true) if the function executed successfully or 0 (false) if the nopcode parameter contains an invalid ID of the anti-NOP

EnableAntiNOPForPlayer(playerid, nopcode, enable)

Use to enable/disable one of the anti-NOPs for a specific player

• playerid - The ID of the player to enable/disable the anti-NOP for
• nopcode - The ID of the anti-NOP
• enable - 1 to enable/0 to disable
• Returns 1 if the function executed successfully, 0 if the player is not connected or -1 if the nopcode parameter contains an invalid ID of the anti-NOP

IsAntiNOPEnabled(nopcode)

Use to check whether one of the anti-NOPs is enabled/disabled

• nopcode - The ID of the anti-NOP to check
• Return 1 (true) if enabled or 0 (false) if disabled

IsAntiNOPEnabledForPlayer(playerid, nopcode)

Use to check whether one of the anti-NOPs is enabled/disabled for a specific player

• playerid - The ID of the player to be checked whether the anti-NOP is enabled/disabled for him
• nopcode - The ID of the anti-NOP to check
• Return 1 (true) if enabled or 0 (false) if disabled

Added in v1.9.42:

AntiCheatGetVehicleDriver(vehicleid)

Use to get the ID of the driver of a vehicle

• vehicleid - The ID of the vehicle to get the driver ID of
• Returns the ID of the driver or INVALID_PLAYER_ID if the vehicle does not exist

AntiCheatGetVehicleInterior(vehicleid)

Use to get the ID of the current interior of a vehicle

• vehicleid - The ID of the vehicle to get the interior ID of
• Returns the ID of the interior or 0 if the vehicle does not exist

AntiCheatGetVehiclePaintjob(vehicleid)

Use to get the ID of the paintjob of a vehicle

• vehicleid - The ID of the vehicle to get the paintjob ID of
• Returns the ID of the paintjob or 3 if the vehicle does not exist

Added in v1.9.43:

AntiCheatGetVehiclePos(vehicleid, &Float:x, &Float:y, &Float:z)

Use to get the position of a vehicle (according to anticheat data)

• vehicleid - The ID of the vehicle to get the position of
• &Float:x - A variable to store the x coordinate in, passed by reference
• &Float:y - A variable to store the y coordinate in, passed by reference
• &Float:z - A variable to store the z coordinate in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the vehicle does not exist

AntiCheatGetVehicleZAngle(vehicleid, &Float:z_angle)

Use to get the z rotation of a vehicle (according to anticheat data)

• vehicleid - The ID of the vehicle to get the z rotation of
• &Float:z_angle - A variable to store the z rotation in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the vehicle does not exist

AntiCheatGetVehicleSpawnPos(vehicleid, &Float:x, &Float:y, &Float:z)

Use to get the spawn position of a vehicle

• vehicleid - The ID of the vehicle to get the spawn position of
• &Float:x - A variable to store the x coordinate in, passed by reference
• &Float:y - A variable to store the y coordinate in, passed by reference
• &Float:z - A variable to store the z coordinate in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the vehicle does not exist

AntiCheatGetVehicleSpawnZAngle(vehicleid, &Float:z_angle)

Use to get the spawn z rotation of a vehicle

• vehicleid - The ID of the vehicle to get the spawn z rotation of
• &Float:z_angle - A variable to store the z rotation in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the vehicle does not exist

Added in v1.9.46:

AntiCheatGetInterior(playerid)

Use to get the ID of the interior a player is currently in (according to anticheat data)

• playerid - The ID of the player to get the interior ID of
• Returns the ID of the interior or 0 if the player is not connected

Added in v1.9.50:

AntiCheatGetEnterVehicleSeat(playerid)

Use to get the seat of the vehicle a player attempted to enter last time

• playerid - The ID of the player to get the last entered seat of
• Returns the ID of the entered seat or -1 if the player is not connected

AntiCheatGetWeaponInSlot(playerid, slot)

Use to get the weapon ID in a specific player's weapon slot (according to anticheat data)

• playerid - The ID of the player to get the weapon ID of
• slot - The slot to get the weapon ID for
• Returns the ID of weapon in a specific slot, -1 if the player is not connected or -2 if the slot specified is invalid

AntiCheatGetAmmoInSlot(playerid, slot)

Use to get the ammo in a specific player's weapon slot (according to anticheat data)

• playerid - The ID of the player to get the ammo of
• slot - The slot to get the ammo for
• Returns the amount of ammo in a specific slot, -1 if the player is not connected or -2 if the slot specified is invalid

AntiCheatIsInSpectate(playerid)

Use to check whether a player is in spectator mode or not

• playerid - The ID of the player to check
• Returns 1 (true) if it is or 0 (false) if it is not

AntiCheatGetVehicleSpeed(vehicleid)

Use to get the speed of a vehicle

• vehicleid - The ID of the vehicle to get the speed of
• Returns the vehicle speed or 0 if the vehicle does not exist

AntiCheatIsVehicleSpawned(vehicleid)

Use to check whether a vehicle is spawned or not

• vehicleid - The ID of the vehicle to check
• Returns 1 (true) if it is or 0 (false) if it is not

Added in v1.9.53:

AntiCheatGetPickupPos(pickupid, &Float:x, &Float:y, &Float:z)

Use to get the position of a pickup

• pickupid - The ID of the pickup to get the position of
• &Float:x - A variable to store the x coordinate in, passed by reference
• &Float:y - A variable to store the y coordinate in, passed by reference
• &Float:z - A variable to store the z coordinate in, passed by reference
• Returns 1 (true) if the function executed successfully or 0 (false) if the pickup does not exist

Example of setting OnCheatDetected in your gamemode

Multilingual:

The script can be configured in any of the available languages. To do it, just download the desired localization, save it in a directory with the main include (nex_ac.inc) and recompile your script.

• .lang files can be opened even in default notepad and easily edited

Did not find your language? Help the project :)
If you know well a language that is not in the "lang" folder, please translate anticheat into this language. To do this, just send the translated .lang file via Pull Request.
I will be very glad of your help and add you in the list of those who helped the development of the anticheat.

Installation:

1. Download latest anticheat version from the repo
2. Download the language file (.lang) in your preferred language
3. Copy both files to a folder "/pawno/include" which is located in a folder with the server
4. In your gamemode, after #include <a_samp> write the following:

#define DEBUG
#include <nex-ac_en.lang> //or any other
#include <nex-ac>

5. In all filterscripts, after #include <a_samp> write the following:

#include <nex-ac>

6. Compile the modified scripts

Warnings:

• Check for using any other anticheats in order to avoid conflicts with them
• If you use Streamer Plugin by Incognito, Pawn.RakNet, foreach, sscanf, YSF or SKY, include it before nex-ac
• Also keep in mind that filterscript must have "#define FILTERSCRIPT" before including the anticheat

Thanks:

• f0Re3t, Vitalik_Gonsor, Magic_York, Roberto_York, TheHero, Nike_33, Mix_Rargard, Unisheld - testing
• ZiGGi, Urukhay, Yashas, theYiin, RaefaldhiAmartya, PatchwerkQWER, kvann, rt-2 - advices on the code
• Carper - German translation
• Jstylezzz - Dutch translation
• J4Rr3x, Sasino97 - Italian translation
• Alex Westbrook, JustBored, Frenzoid - Spanish translation
• lashona, ArthourP, DAKYSKYE - Georgian translation
• wampiros6 - Polish translation
• DeitY, Dragony92 - Serbian translation
• NicK_ - Brazilian Portuguese translation
• KyleSmith, infin1tyy - Improved English translation
• M4D - Persian (Farsi) Translation
• Valera_Kovshikov - Ukrainian translation
• RaefaldhiAmartya - Indonesian translation
• vannesenn - Croatian translation
• j3rry, vic1997 - French translation
• zaibaslr2 - Lithuanian translation
• UnforgiveNNN - Romanian translation
• Pedro. - Hungarian translation
• Ben_Lovejoy - Finnish translation
• Rengar - Latvian translation
• bgedition - Bulgarian translation
• Jensenn - Turkish translation
• Sanady - Slovak translation
• Grig - Armenian translation
• SooBad - Czech translation
• OldPawn - Estonian translation
• Negativ_Tm - Turkmen translation
• Trung.Tin - Vietnamese translation
• willbedie - Albanian translation
• aktah - Thai translation
• Michael.Richmond - Moldavian translation
• NemanjaMAX - Bosnian translation
• TTG - simplified Chinese translation
• Abraar - Hindi translation

This script also contains materials from third-party open source projects.