From fc689ae0614b7d2b1ae7135c85d126fac86dad47 Mon Sep 17 00:00:00 2001
From: frqher <hacked.mordo@gmail.com>
Date: Tue, 26 Aug 2025 02:18:37 +0400
Subject: [PATCH 1/2] Add onElementPositionChange event to SetElementPosition
 for anti-cheat compatibility

This event allows anti-cheat scripts to distinguish between server-initiated and client-initiated position changes, preventing false positives when the server teleports players (e.g., for elevators or scripted events).
---
 .../logic/CStaticFunctionDefinitions.cpp       | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp b/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
index 14644dc1094..d65b816a19f 100644
--- a/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
+++ b/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
@@ -1340,6 +1340,24 @@ bool CStaticFunctionDefinitions::SetElementPosition(CElement* pElement, const CV
     if (ped && ped->HasJetPack())
         m_pPlayerManager->BroadcastOnlyJoined(CElementRPCPacket(ped, GIVE_PED_JETPACK, *BitStream.pBitStream));
 
+    // This event is triggered server-side to allow anti-cheat scripts to distinguish between
+    // position changes made by the server (e.g., elevators, scripted teleports) and those made by the client.
+    // Without this event, anti-cheat systems may falsely detect legitimate server-side teleports as cheats,
+    // since they only check the distance between old and new positions.
+    // By listening to this event, anti-cheat scripts can safely ignore server-initiated position changes.
+    CLuaArguments Arguments;
+    Arguments.PushElement(pElement);
+    Arguments.PushNumber(vecPosition.fX);
+    Arguments.PushNumber(vecPosition.fY);
+    Arguments.PushNumber(vecPosition.fZ);
+    Arguments.PushBool(bWarp);
+     
+
+    if (!pElement->CallEvent("onElementPositionChange", Arguments))
+    {
+       return false;
+    }
+
     return true;
 }
 

From 9f2aebbc27661110e300780e6b890ba30e937021 Mon Sep 17 00:00:00 2001
From: frqher <hacked.mordo@gmail.com>
Date: Tue, 26 Aug 2025 16:58:58 +0400
Subject: [PATCH 2/2] Add old position parameters to onElementPositionChange
 event

The onElementPositionChange event now receives both the old and new position of the element as arguments.
---
 Server/mods/deathmatch/logic/CGame.cpp                      | 1 +
 Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/Server/mods/deathmatch/logic/CGame.cpp b/Server/mods/deathmatch/logic/CGame.cpp
index 910a1722dde..3b21533de4a 100644
--- a/Server/mods/deathmatch/logic/CGame.cpp
+++ b/Server/mods/deathmatch/logic/CGame.cpp
@@ -1672,6 +1672,7 @@ void CGame::AddBuiltInEvents()
     m_Events.AddEvent("onElementInteriorChange", "oldInterior, newInterior", nullptr, false);
     m_Events.AddEvent("onElementAttach", "attachSource, attachOffsetX, attachOffsetY, attachOffsetZ, attachOffsetRX, attachOffsetRY, attachOffsetRZ", nullptr, false);
     m_Events.AddEvent("onElementDetach", "detachSource, detachWorldX, detachWorldY, detachWorldZ, detachWorldRX, detachWorldRY, detachWorldRZ", nullptr, false);
+    m_Events.AddEvent("onElementPositionChange", "oldX, oldY, oldZ, newX, newY, newZ", nullptr, false);
 
     // Radar area events
 
diff --git a/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp b/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
index d65b816a19f..4a98dcbf21a 100644
--- a/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
+++ b/Server/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp
@@ -1305,6 +1305,9 @@ bool CStaticFunctionDefinitions::SetElementPosition(CElement* pElement, const CV
         player->SetTeleported(true);
     }
 
+    // Get element old position
+    CVector elementOldPosition = pElement->GetPosition();
+
     // Update our position for that entity.
     pElement->SetPosition(vecPosition);
 
@@ -1347,6 +1350,9 @@ bool CStaticFunctionDefinitions::SetElementPosition(CElement* pElement, const CV
     // By listening to this event, anti-cheat scripts can safely ignore server-initiated position changes.
     CLuaArguments Arguments;
     Arguments.PushElement(pElement);
+    Arguments.PushNumber(elementOldPosition.fX);
+    Arguments.PushNumber(elementOldPosition.fY);
+    Arguments.PushNumber(elementOldPosition.fZ);
     Arguments.PushNumber(vecPosition.fX);
     Arguments.PushNumber(vecPosition.fY);
     Arguments.PushNumber(vecPosition.fZ);