From 10dddab97e175e1409e1da2a3bef7fc61383d061 Mon Sep 17 00:00:00 2001
From: ricardoofnl <raditiyaeltamricardo@outlook.de>
Date: Sat, 5 Sep 2026 09:24:38 +0700
Subject: [PATCH] [saco] Implement/match `FUNC_10016370`, the bullet sync
 handler; per-component float assignments keep the direct displacements a
 `VECTOR` copy would hide behind a `lea`

---
 saco/game/hooks.cpp       | 10 ------
 saco/game/playerped.h     | 10 ++++++
 saco/net/remoteplayer.cpp | 64 +++++++++++++++++++++++++++++++++++++++
 saco/net/remoteplayer.h   | 12 ++++++++
 4 files changed, 86 insertions(+), 10 deletions(-)

diff --git a/saco/game/hooks.cpp b/saco/game/hooks.cpp
index 1eb1732..d184272 100644
--- a/saco/game/hooks.cpp
+++ b/saco/game/hooks.cpp
@@ -2823,16 +2823,6 @@ NUDE CWeapon__FireInstantHit_Hook()
 
 extern DWORD unnamed_10118990; // 0x10118990, lives in another translation unit
 
-// where a synced shot came from, snapshotted by CPlayerPed::FUNC_100AFA70
-struct SHOT_SYNC_DATA
-{
-	DWORD			field_0;
-	VECTOR			vecOrigin;
-	VECTOR			vecColPoint;
-	VECTOR			vecOffset;
-	ENTITY_TYPE		*pAttachedTo;
-};
-
 // todo: implement sub_100A5410
 void __stdcall sub_100A5410(VECTOR *vecOrigin, VECTOR *vecLine, VECTOR *colPoint, DWORD *pHitEntity);
 
diff --git a/saco/game/playerped.h b/saco/game/playerped.h
index b4797d5..1d480c2 100644
--- a/saco/game/playerped.h
+++ b/saco/game/playerped.h
@@ -7,6 +7,16 @@
 
 struct struc_13;
 
+// where a synced shot came from, snapshotted by CPlayerPed::FUNC_100AFA70
+struct SHOT_SYNC_DATA
+{
+	DWORD			field_0;
+	VECTOR			vecOrigin;
+	VECTOR			vecColPoint;
+	VECTOR			vecOffset;
+	ENTITY_TYPE		*pAttachedTo;
+};
+
 DWORD __stdcall GamePool_Vehicle_GetIndex(VEHICLE_TYPE *pVehicle);
 void FUNC_100AE520(); // .text:100AE520
 
diff --git a/saco/net/remoteplayer.cpp b/saco/net/remoteplayer.cpp
index 8cc6983..c9a75a6 100644
--- a/saco/net/remoteplayer.cpp
+++ b/saco/net/remoteplayer.cpp
@@ -39,6 +39,8 @@ typedef char CRemotePlayer_offsets[(
 	offsetof(CRemotePlayer, field_1F9) == 0x1F9) ? 1 : -1];
 
 typedef char CNetPlayer_offsets[(offsetof(CNetPlayer, m_PlayerName) == 0x14) ? 1 : -1];
+typedef char BULLET_SYNC_offsets[(offsetof(BULLET_SYNC_DATA, byteWeaponID) == 0x27 &&
+	sizeof(BULLET_SYNC_DATA) == 0x28) ? 1 : -1];
 typedef char struc_41_offsets[(offsetof(struc_41, field_30) == 0x30) ? 1 : -1];
 typedef char WEAPON_SLOT_offsets[(offsetof(WEAPON_SLOT_TYPE, field_8) == 8 &&
 	sizeof(WEAPON_SLOT_TYPE) == 28) ? 1 : -1];
@@ -411,6 +413,68 @@ void CRemotePlayer::FUNC_10017260(BYTE *pSync, int iTime)
 
 //----------------------------------------------------
 
+void CRemotePlayer::FUNC_10016370(BULLET_SYNC_DATA *pSync)
+{
+	if(!m_pPlayerPed) return;
+	if(!m_pPlayerPed->IsAdded()) return;
+
+	SHOT_SYNC_DATA shotSync;
+
+	memset(&shotSync, 0, sizeof(shotSync));
+	shotSync.vecOrigin.X = pSync->vecHitOrigin.X;
+	shotSync.vecOrigin.Y = pSync->vecHitOrigin.Y;
+	shotSync.vecOrigin.Z = pSync->vecHitOrigin.Z;
+	shotSync.vecColPoint.X = pSync->vecHitTarget.X;
+	shotSync.vecColPoint.Y = pSync->vecHitTarget.Y;
+	shotSync.vecColPoint.Z = pSync->vecHitTarget.Z;
+	shotSync.vecOffset.X = pSync->vecCenterOfHit.X;
+	shotSync.vecOffset.Y = pSync->vecCenterOfHit.Y;
+	shotSync.vecOffset.Z = pSync->vecCenterOfHit.Z;
+
+	if(pSync->byteHitType) {
+		if(shotSync.vecOffset.X > 300.0f || shotSync.vecOffset.X < -300.0f ||
+			shotSync.vecOffset.Y > 300.0f || shotSync.vecOffset.Y < -300.0f ||
+			shotSync.vecOffset.Z > 300.0f || shotSync.vecOffset.Z < -300.0f) return;
+
+		if(pSync->byteHitType == 1) {
+			CPlayerPool *pPlayerPool = pNetGame->GetPlayerPool();
+			if(pPlayerPool) {
+				PLAYERID playerId = pSync->wHitID;
+				if(playerId == pPlayerPool->m_LocalPlayerID) {
+					shotSync.pAttachedTo = (ENTITY_TYPE *)pGame->FindPlayerPed()->m_pPed;
+				} else if(playerId == m_PlayerID) return;
+				else if(pPlayerPool->GetSlotState(playerId)) {
+					CPlayerPed *pPlayerPed = pPlayerPool->GetAt(playerId)->m_pPlayerPed;
+					if(pPlayerPed) shotSync.pAttachedTo = (ENTITY_TYPE *)pPlayerPed->m_pPed;
+				}
+			}
+		} else if(pSync->byteHitType == 2) {
+			CVehiclePool *pVehiclePool = pNetGame->GetVehiclePool();
+			if(pVehiclePool) {
+				VEHICLEID VehicleID = pSync->wHitID;
+				if(pVehiclePool->GetSlotState(VehicleID))
+					shotSync.pAttachedTo =
+						(ENTITY_TYPE *)((CVehicle *)pVehiclePool->GetAt(VehicleID))->m_pVehicle;
+			}
+		}
+	}
+
+	if(m_pPlayerPed->IsAdded()) {
+		if(m_pPlayerPed->GetCurrentWeapon() != pSync->byteWeaponID) {
+			m_pPlayerPed->SetArmedWeapon(pSync->byteWeaponID, true);
+			if(m_pPlayerPed->GetCurrentWeapon() != pSync->byteWeaponID) {
+				m_pPlayerPed->GiveWeapon(pSync->byteWeaponID, 9999);
+				m_pPlayerPed->SetArmedWeapon(pSync->byteWeaponID, true);
+			}
+		}
+	}
+
+	m_pPlayerPed->FUNC_100AF280(&shotSync);
+	m_pPlayerPed->FUNC_100AFA70();
+}
+
+//----------------------------------------------------
+
 void CRemotePlayer::FUNC_10014C40()
 {
 	if(!m_pPlayerPed) return;
diff --git a/saco/net/remoteplayer.h b/saco/net/remoteplayer.h
index 19de6a6..fd1d131 100644
--- a/saco/net/remoteplayer.h
+++ b/saco/net/remoteplayer.h
@@ -3,6 +3,17 @@
 
 //----------------------------------------------------
 
+// the bullet sync payload, 0x28 bytes on the wire
+struct BULLET_SYNC_DATA
+{
+	BYTE		byteHitType;
+	WORD		wHitID;
+	VECTOR		vecHitOrigin;
+	VECTOR		vecHitTarget;
+	VECTOR		vecCenterOfHit;
+	BYTE		byteWeaponID;
+};
+
 #pragma pack(1)
 class CRemotePlayer
 {
@@ -95,6 +106,7 @@ public:
 	void FUNC_10014FF0(); // .text:10014FF0
 	void FUNC_10017260(BYTE *pSync, int iTime); // .text:10017260
 	void FUNC_10014C40(); // .text:10014C40
+	void FUNC_10016370(BULLET_SYNC_DATA *pSync); // .text:10016370
 	void FUNC_10014E60(); // .text:10014E60
 	void FUNC_10015460(); // .text:10015460
 	void FUNC_10015760(BYTE *pAim); // .text:10015760