Fix setVehicleDirtLevel

Author: FileEX

Client/game_sa/CModelInfoSA.h

@@ -14,6 +14,7 @@
 #include <game/Common.h>
 #include <game/CModelInfo.h>
 #include "CRenderWareSA.h"
+#include "game/RenderWare.h"
 
 class CPedModelInfoSA;
 class CPedModelInfoSAInterface;
@@ -259,11 +260,22 @@ class CTimeModelInfoSAInterface : public CBaseModelInfoSAInterface
     CTimeInfoSAInterface timeInfo;
 };
 
+class CVehicleModelUpgradePosnDesc
+{
+    CVector m_vPosition;
+    RtQuat  m_vRotation;
+    int     m_iParentId;
+};
+
 class CVehicleModelVisualInfoSAInterface            // Not sure about this name. If somebody knows more, please change
 {
 public:
-    CVector vecDummies[15];
-    char    m_sUpgrade[18];
+    CVector                      vecDummies[15];
+    CVehicleModelUpgradePosnDesc m_sUpgrade[18];
+    RpAtomic*                    m_pExtra[6];
+    std::uint8_t                 m_numExtras;
+    std::uint8_t                 _pad[3];
+    int                          m_maskComponentDamagable;
 };
 
 class CVehicleModelInfoSAInterface : public CBaseModelInfoSAInterface
@@ -290,7 +302,19 @@ class CVehicleModelInfoSAInterface : public CBaseModelInfoSAInterface
     float                               fSteeringAngle;
     CVehicleModelVisualInfoSAInterface* pVisualInfo;            // +92
     char                                pad3[464];
-    char                                pDirtMaterial[64];            // *RwMaterial
+    //RpMaterial*                         pDirtMaterial[32];
+
+    union
+    {
+        struct
+        {
+            RpMaterial** m_dirtMaterials;
+            size_t       m_numDirtMaterials;
+            RpMaterial*  m_staticDirtMaterials[30];
+        };
+        RpMaterial* pDirtMaterial[32];
+    };
+
     char                                pad4[64];
     char                                primColors[8];
     char                                secondColors[8];

Client/game_sa/gamesa_renderware.h

@@ -105,6 +105,7 @@ typedef RpHAnimHierarchy*(__cdecl* GetAnimHierarchyFromSkinClump_t)(RpClump*);
 typedef int(__cdecl* RpHAnimIDGetIndex_t)(RpHAnimHierarchy*, int);
 typedef RwMatrix*(__cdecl* RpHAnimHierarchyGetMatrixArray_t)(RpHAnimHierarchy*);
 typedef RtQuat*(__cdecl* RtQuatRotate_t)(RtQuat* quat, const RwV3d* axis, float angle, RwOpCombineType combineOp);
+typedef RpGeometry*(__cdecl* RpGeometryForAllMaterials_t)(RpGeometry* geom, void* callback, void* data);
 
 /*****************************************************************************/
 /** Renderware function mappings                                            **/
@@ -195,6 +196,7 @@ RWFUNC(GetAnimHierarchyFromSkinClump_t GetAnimHierarchyFromSkinClump, (GetAnimHi
 RWFUNC(RpHAnimIDGetIndex_t RpHAnimIDGetIndex, (RpHAnimIDGetIndex_t)0xDEAD)
 RWFUNC(RpHAnimHierarchyGetMatrixArray_t RpHAnimHierarchyGetMatrixArray, (RpHAnimHierarchyGetMatrixArray_t)0xDEAD)
 RWFUNC(RtQuatRotate_t RtQuatRotate, (RtQuatRotate_t)0xDEAD)
+RWFUNC(RpGeometryForAllMaterials_t RpGeometryForAllMaterials, (RpGeometryForAllMaterials_t)0xDEAD)
 
 /*****************************************************************************/
 /** GTA function definitions and mappings                                   **/

Client/game_sa/gamesa_renderware.hpp

@@ -89,7 +89,8 @@ void InitRwFunctions()
     RpHAnimIDGetIndex = (RpHAnimIDGetIndex_t)0x7C51A0;
     RpHAnimHierarchyGetMatrixArray = (RpHAnimHierarchyGetMatrixArray_t)0x7C5120;
     RtQuatRotate = (RtQuatRotate_t)0x7EB7C0;
-    
+    RpGeometryForAllMaterials = (RpGeometryForAllMaterials_t)0x74C790;
+
     SetTextureDict = (SetTextureDict_t)0x007319C0;
     LoadClumpFile = (LoadClumpFile_t)0x005371F0;
     LoadModel = (LoadModel_t)0x0040C6B0;

Client/multiplayer_sa/CMultiplayerSA_Vehicles.cpp

@@ -9,6 +9,10 @@
  *****************************************************************************/
 
 #include "StdInc.h"
+#include "..\game_sa\gamesa_renderware.h"
+
+#define FUNC_CVehicleModelInfo_ResetColors 0x4C8490
+static RwTexture** ms_aDirtTextures = (RwTexture**)0xC02BD0;
 
 static bool __fastcall AreVehicleDoorsUndamageable(CVehicleSAInterface* vehicle)
 {
@@ -107,6 +111,106 @@ static void _declspec(naked) HOOK_CAEVehicleAudioEntity__Initialise()
     }
 }
 
+static void CVehicleModelInfo_Shutdown()
+{
+    CVehicleModelInfoSAInterface* mi = nullptr;
+    _asm
+    {
+        mov mi, ecx
+    }
+
+    if (!mi)
+        return;
+
+    // Call CBaseModelInfo::Shutdown
+    ((void(__cdecl*)(void*))0x4C4D50)(mi);
+
+    delete[] mi->m_dirtMaterials;
+    mi->m_dirtMaterials = nullptr;
+}
+
+static void SetDirtTextures(CVehicleModelInfoSAInterface* mi, std::uint32_t level)
+{
+    RpMaterial** materials = mi->m_numDirtMaterials > 30 ? mi->m_dirtMaterials : mi->m_staticDirtMaterials;
+    for (std::uint32_t i = 0; i < mi->m_numDirtMaterials; i++)
+        RpMaterialSetTexture(materials[i], ms_aDirtTextures[level]);
+}
+
+#define HOOKPOS_CVehicleModelInfo_SetDirtTextures 0x5D5DBB
+#define HOOKSIZE_CVehicleModelInfo_SetDirtTextures 6
+static constexpr DWORD CONTINUE_CVehicleModelInfo_SetDirtTextures = 0x5D5DE3;
+static void _declspec(naked) HOOK_CVehicleModelInfo_SetDirtTextures()
+{
+    _asm
+    {
+        pushad
+        push ebx
+        push esi
+        call SetDirtTextures
+        add esp, 8
+        popad
+
+        jmp CONTINUE_CVehicleModelInfo_SetDirtTextures
+    }
+}
+
+static RpMaterial* GetAtomicGeometryMaterialsCB(RpMaterial* material, void* data)
+{
+    RwTexture* texture = material->texture;
+    if (!texture)
+        return nullptr;
+
+    auto cbData = static_cast<std::vector<RpMaterial*>*>(data);
+    if (texture->name && std::strcmp(texture->name, "vehiclegrunge256") == 0)
+        cbData->push_back(material);
+
+    return material;
+}
+
+static bool GetEditableMaterialListCB(RpAtomic* atomic, void* data)
+{
+    RpGeometryForAllMaterials(atomic->geometry, &GetAtomicGeometryMaterialsCB, data);
+    return true;
+}
+
+static void __fastcall FindEditableMaterialList(CVehicleModelInfoSAInterface* mi)
+{
+    std::vector<RpMaterial*> list;
+    RpClumpForAllAtomics(reinterpret_cast<RpClump*>(mi->pRwObject), &GetEditableMaterialListCB, &list);
+
+    for (std::uint32_t i = 0; i < mi->pVisualInfo->m_numExtras; i++)
+        GetEditableMaterialListCB(mi->pVisualInfo->m_pExtra[i], &list);
+
+    mi->m_numDirtMaterials = list.size();
+    if (mi->m_numDirtMaterials > 30)
+    {
+        mi->m_dirtMaterials = new RpMaterial*[mi->m_numDirtMaterials];
+        std::copy(list.begin(), list.end(), mi->m_dirtMaterials);
+    }
+    else
+    {
+        mi->m_dirtMaterials = nullptr;
+        std::copy(list.begin(), list.end(), mi->m_staticDirtMaterials);
+    }
+
+    ((void(__thiscall*)(CVehicleModelInfoSAInterface*))FUNC_CVehicleModelInfo_ResetColors)(mi);
+}
+
+#define HOOKPOS_CVehicleModelInfo_SetClump 0x4C9648
+#define HOOKSIZE_CVehicleModelInfo_SetClump 24
+static constexpr DWORD CONTINUE_CVehicleModelInfo_SetClump = 0x4C9660;
+static void _declspec(naked) HOOK_CVehicleModelInfo_SetClump()
+{
+    _asm
+    {
+        pushad
+        call FindEditableMaterialList
+        popad
+
+        jmp CONTINUE_CVehicleModelInfo_SetClump
+    }
+}
+
 //////////////////////////////////////////////////////////////////////////////////////////
 //
 // CMultiplayerSA::InitHooks_Vehicles
@@ -118,4 +222,9 @@ void CMultiplayerSA::InitHooks_Vehicles()
 {
     EZHookInstall(CDamageManager__ProgressDoorDamage);
     EZHookInstall(CAEVehicleAudioEntity__Initialise);
+
+    // Fix vehicle dirt level
+    EZHookInstall(CVehicleModelInfo_SetClump);
+    EZHookInstall(CVehicleModelInfo_SetDirtTextures);
+    MemCpy((void*)0x85C5E4, &CVehicleModelInfo_Shutdown, 4);
 }