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Update (detections/conf): Speed Hack Precision

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New conf:
#     Anticheat.SpeedLimitTolerance
#       Description: Speed Limit Tolerance allows a certain whole percentage of tolerance to speed
#       hack logging and detection.
#
#       Example: AnticheatMgr:: Speed-Hack (Speed Movement at 12% above allowed Server Set rate 8%.)
#       will be detected since its 4 (default) and higher, but anything 3 and lower will not be flagged.
#       Default:    4 - (Default)
#

Anticheat.SpeedLimitTolerance = 4

    Created a conf to establish a speed limit tolerance over server rate set speed
    This is done so we can ignore minor violations that are not false positives such as going 1 or 2 over the speed limit
This commit is contained in:
M'Dic
2022-11-17 12:22:37 -05:00
parent 946e888a18
commit f3ebf813ba
3 changed files with 32 additions and 10 deletions
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11
conf/Anticheat.conf.dist
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@@ -101,6 +101,17 @@ Anticheat.StricterFlyHackCheck = 0
Anticheat.StricterDetectJumpHack = 0
# Anticheat.SpeedLimitTolerance
# Description: Speed Limit Tolerance allows a certain whole percentage of tolerance to speed
# hack logging and detection.
#
# Example: AnticheatMgr:: Speed-Hack (Speed Movement at 12% above allowed Server Set rate 8%.)
# will be detected since its 4 (default) and higher, but anything 3 and lower will not be flagged.
# Default: 4 - (Default)
#
Anticheat.SpeedLimitTolerance = 4
# Automatic Moderation Features
#
# Anticheat.KickPlayer

12
src/AnticheatMgr.cpp
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@@ -222,8 +222,17 @@ void AnticheatMgr::SpeedHackDetection(Player* player, MovementInfo movementInfo)
// this is the distance doable by the player in 1 sec, using the time done to move to this point.
uint32 clientSpeedRate = distance2D * 1000 / timeDiff;
// We did the (uint32) cast to accept a margin of tolerance
// we create a diff speed in uint32 for further precision checking to avoid legit fall and slide
uint32 diffspeed = clientSpeedRate - speedRate;
// create a conf to establish a speed limit tolerance over server rate set speed
// this is done so we can ignore minor violations that are not false positives such as going 1 or 2 over the speed limit
_assignedspeeddiff = sConfigMgr->GetOption<uint32>("Anticheat.SpeedLimitTolerance", 4);
// We did the (uint32) cast to accept a margin of tolerance for seasonal spells and buffs such as sugar rush
// We check the last MovementInfo for the falling flag since falling down a hill and sliding a bit triggered a false positive
if ((diffspeed >= _assignedspeeddiff) && !m_Players[key].GetLastMovementInfo().HasMovementFlag(MOVEMENTFLAG_FALLING))
{
if ((clientSpeedRate > speedRate * 1.05f) && !m_Players[key].GetLastMovementInfo().HasMovementFlag(MOVEMENTFLAG_FALLING))
{
if (!player->CanTeleport())
@@ -240,6 +249,7 @@ void AnticheatMgr::SpeedHackDetection(Player* player, MovementInfo movementInfo)
return;
}
}
}
void AnticheatMgr::FlyHackDetection(Player* player, MovementInfo movementInfo)
{

1
src/AnticheatMgr.h
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@@ -130,6 +130,7 @@ class AnticheatMgr
bool MustCheckTempReports(uint8 type);
uint32 _counter = 0;
uint32 _alertFrequency = 0;
uint32 _assignedspeeddiff = 0;
uint32 _updateCheckTimer = 4000;
AnticheatPlayersDataMap m_Players; ///< Player data
};