Fix SA crash at 0x002a65ef

Author: Dutchman101

Client/game_sa/CVehicleSA.cpp

@@ -1809,7 +1809,7 @@ void CVehicleSA::RecalculateSuspensionLines()
 
     DWORD       dwModel = GetModelIndex();
     CModelInfo* pModelInfo = pGame->GetModelInfo(dwModel);
-    if (pModelInfo && pModelInfo->IsMonsterTruck() || pModelInfo->IsCar())
+    if (pModelInfo && (pModelInfo->IsCar() || pModelInfo->IsMonsterTruck() || pModelInfo->IsTrailer()))
     {
         // Trains (Their trailers do as well!)
         if (pModelInfo->IsTrain() || dwModel == 571 || dwModel == 570 || dwModel == 569 || dwModel == 590)

Client/mods/deathmatch/logic/CClientVehicle.cpp

@@ -4300,6 +4300,11 @@ void CClientVehicle::ApplyHandling()
     if (!m_pVehicle)
         return;
 
+    // Ensure model is loaded before recalculating handling
+    CModelInfo* pModelInfo = g_pGame->GetModelInfo(GetModel());
+    if (!pModelInfo || !pModelInfo->IsLoaded())
+        return;
+
     m_pVehicle->RecalculateHandling();
 
     if (m_eVehicleType == CLIENTVEHICLE_BMX || m_eVehicleType == CLIENTVEHICLE_BIKE)

Client/mods/deathmatch/logic/CStaticFunctionDefinitions.cpp

@@ -8905,6 +8905,10 @@ bool CStaticFunctionDefinitions::SetVehicleHandling(CClientVehicle* pVehicle, Ha
     {
         if (SetEntryHandling(pEntry, eProperty, ucValue))
         {
+            CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+            if (!pModelInfo || !pModelInfo->IsLoaded())
+                return false;
+
             pVehicle->ApplyHandling();
             return true;
         }
@@ -8922,6 +8926,10 @@ bool CStaticFunctionDefinitions::SetVehicleHandling(CClientVehicle* pVehicle, Ha
     {
         if (SetEntryHandling(pEntry, eProperty, uiValue))
         {
+            CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+            if (!pModelInfo || !pModelInfo->IsLoaded())
+                return false;
+
             pVehicle->ApplyHandling();
             return true;
         }
@@ -8939,6 +8947,10 @@ bool CStaticFunctionDefinitions::SetVehicleHandling(CClientVehicle* pVehicle, Ha
     {
         if (SetEntryHandling(pEntry, eProperty, fValue))
         {
+            CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+            if (!pModelInfo || !pModelInfo->IsLoaded())
+                return false;
+
             pVehicle->ApplyHandling();
             return true;
         }
@@ -8956,6 +8968,10 @@ bool CStaticFunctionDefinitions::SetVehicleHandling(CClientVehicle* pVehicle, Ha
     {
         if (SetEntryHandling(pEntry, eProperty, strValue))
         {
+            CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+            if (!pModelInfo || !pModelInfo->IsLoaded())
+                return false;
+
             pVehicle->ApplyHandling();
             return true;
         }
@@ -8973,6 +8989,10 @@ bool CStaticFunctionDefinitions::SetVehicleHandling(CClientVehicle* pVehicle, Ha
     {
         if (SetEntryHandling(pEntry, eProperty, vecValue))
         {
+            CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+            if (!pModelInfo || !pModelInfo->IsLoaded())
+                return false;
+
             pVehicle->ApplyHandling();
             return true;
         }
@@ -9031,6 +9051,10 @@ bool CStaticFunctionDefinitions::ResetVehicleHandling(CClientVehicle* pVehicle)
             pEntry->SetSuspensionUpperLimit(pEntry->GetSuspensionLowerLimit() - 0.1f);
     }
 
+    CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+    if (!pModelInfo || !pModelInfo->IsLoaded())
+        return false;
+
     pVehicle->ApplyHandling();
 
     return true;
@@ -9080,6 +9104,10 @@ bool CStaticFunctionDefinitions::ResetVehicleHandlingProperty(CClientVehicle* pV
             return false;
         }
 
+        CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+        if (!pModelInfo || !pModelInfo->IsLoaded())
+            return false;
+
         pVehicle->ApplyHandling();
 
         return true;

Client/mods/deathmatch/logic/luadefs/CLuaVehicleDefs.cpp

@@ -2518,6 +2518,15 @@ int CLuaVehicleDefs::SetVehicleHandling(lua_State* luaVM)
 
     if (!argStream.HasErrors())
     {
+        // Check if the vehicle model is loaded
+        CModelInfo* pModelInfo = g_pGame->GetModelInfo(pVehicle->GetModel());
+        if (!pModelInfo || !pModelInfo->IsLoaded())
+        {
+            m_pScriptDebugging->LogWarning(luaVM, "setVehicleHandling failed: vehicle model not loaded");
+            lua_pushboolean(luaVM, false);
+            return 1;
+        }
+
         if (argStream.NextIsString())
         {
             SString strProperty;