From fca15e4422d32bf4ab27401d4df14c7dce3ba4fa Mon Sep 17 00:00:00 2001
From: ricardoofnl <raditiyaeltamricardo@outlook.de>
Date: Sun, 30 Aug 2026 12:56:48 +0700
Subject: [PATCH] [saco] Implement/match
 `CPhysical__ProcessEntityCollision_Hook`

---
 saco/game/hooks.cpp | 43 ++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 42 insertions(+), 1 deletion(-)

diff --git a/saco/game/hooks.cpp b/saco/game/hooks.cpp
index 9ff9529..f7d9dce 100644
--- a/saco/game/hooks.cpp
+++ b/saco/game/hooks.cpp
@@ -1346,7 +1346,48 @@ NUDE CMonsterTruck__ProcessEntityCollision_Hook()
 
 NUDE CPhysical__ProcessEntityCollision_Hook()
 {
-	// TODO: CPhysical__ProcessEntityCollision_Hook
+	__asm
+	{
+		mov dwCollisionThis, ecx
+		mov edx, [esp]
+		mov dwCollisionRetAddr, edx
+		mov edx, [esp+4]
+		mov dwCollisionEntity, edx
+		pushad
+		cmp pNetGame, 0
+		jz process_collision
+		mov eax, pNetGame
+		movzx ecx, byte ptr [eax+0x232]			// pNetGame->field_232
+		test ecx, ecx
+		jz process_collision
+		cmp dwCollisionThis, 0
+		jz process_collision
+		cmp dwCollisionEntity, 0
+		jz process_collision
+		mov edx, dwCollisionEntity
+		movzx eax, word ptr [edx+0x22]			// entity.nModelIndex
+		cmp eax, 400
+		jl process_collision
+		mov ecx, dwCollisionEntity
+		movzx edx, word ptr [ecx+0x22]
+		cmp edx, 611							// only vehicle models pass
+		jg process_collision
+		mov eax, dwCollisionThis
+		cmp dword ptr [eax+0x460], 0			// pVehicle->pDriver
+		jz process_collision
+		mov ecx, dwCollisionEntity
+		cmp dword ptr [ecx+0x460], 0
+		jz process_collision
+		popad
+
+		// both vehicles are being driven, so don't collide them
+		mov eax, 0
+		retn 8
+	process_collision:
+		popad
+		mov edx, 0x546D00						// CPhysical::ProcessEntityCollision
+		jmp edx
+	}
 }
 
 //-----------------------------------------------------------