Add new world special property (vehicle sun glare effect) (#2495)

Co-authored-by: Uladzislau Nikalayevich <thenormalnij@gmail.com>

Client/game_sa/CGameSA.cpp

@@ -222,6 +222,7 @@ CGameSA::CGameSA()
     CFxSystemSA::StaticSetHooks();
     CFileLoaderSA::StaticSetHooks();
     D3DResourceSystemSA::StaticSetHooks();
+    CVehicleSA::StaticSetHooks();
 }
 
 CGameSA::~CGameSA()
@@ -603,6 +604,9 @@ bool CGameSA::IsCheatEnabled(const char* szCheatName)
     if (!strcmp(szCheatName, PROP_UNDERWORLD_WARP))
         return IsUnderWorldWarpEnabled();
 
+    if (!strcmp(szCheatName, PROP_VEHICLE_SUNGLARE))
+        return IsVehicleSunGlareEnabled();
+
     std::map<std::string, SCheatSA*>::iterator it = m_Cheats.find(szCheatName);
     if (it == m_Cheats.end())
         return false;
@@ -635,6 +639,12 @@ bool CGameSA::SetCheatEnabled(const char* szCheatName, bool bEnable)
         return true;
     }
 
+    if (!strcmp(szCheatName, PROP_VEHICLE_SUNGLARE))
+    {
+        SetVehicleSunGlareEnabled(bEnable);
+        return true;
+    }
+
     std::map<std::string, SCheatSA*>::iterator it = m_Cheats.find(szCheatName);
     if (it == m_Cheats.end())
         return false;
@@ -724,6 +734,17 @@ void CGameSA::SetJetpackWeaponEnabled(eWeaponType weaponType, bool bEnabled)
     }
 }
 
+void CGameSA::SetVehicleSunGlareEnabled(bool bEnabled)
+{
+    // State turning will be handled in hooks handler
+    CVehicleSA::SetVehiclesSunGlareEnable(bEnabled);
+}
+
+bool CGameSA::IsVehicleSunGlareEnabled()
+{
+    return CVehicleSA::GetVehiclesSunGlareEnable();
+}
+
 bool CGameSA::PerformChecks()
 {
     std::map<std::string, SCheatSA*>::iterator it;

Client/game_sa/CGameSA.h

@@ -85,6 +85,8 @@ extern unsigned int OBJECTDYNAMICINFO_MAX;            // default: 160
 #define PROP_SNIPER_MOON            "snipermoon"
 #define PROP_EXTRA_AIR_RESISTANCE   "extraairresistance"
 #define PROP_UNDERWORLD_WARP        "underworldwarp"
+#define PROP_VEHICLE_SUNGLARE       "vehiclesunglare"
+
 
 struct SCheatSA
 {
@@ -391,6 +393,9 @@ class CGameSA : public CGame
     void SetJetpackWeaponEnabled(eWeaponType weaponType, bool bEnabled);
     bool GetJetpackWeaponEnabled(eWeaponType weaponType);
 
+    void SetVehicleSunGlareEnabled(bool bEnabled);
+    bool IsVehicleSunGlareEnabled();
+
     unsigned long GetMinuteDuration();
     void          SetMinuteDuration(unsigned long ulTime);
 

Client/game_sa/CVehicleSA.cpp

@@ -16,6 +16,30 @@ bool            g_bVehiclePointerInvalid = false;
 
 #include "gamesa_renderware.h"
 
+static BOOL m_bVehicleSunGlare = false;
+_declspec(naked) void DoVehicleSunGlare(void* this_)
+{
+    _asm {
+        mov eax, FUNC_CVehicle_DoSunGlare
+        jmp eax
+    }
+}
+
+void _declspec(naked) HOOK_Vehicle_PreRender(void)
+{
+    _asm {
+        mov	ecx, m_bVehicleSunGlare
+		cmp	ecx, 0
+		jle	noglare
+		mov	ecx, esi
+		call DoVehicleSunGlare
+	noglare:
+		mov [esp+0D4h], edi
+		push 6ABD04h
+		retn
+    }
+}
+
 namespace
 {
     bool ClumpDumpCB(RpAtomic* pAtomic, void* data)
@@ -2318,6 +2342,22 @@ void CVehicleSA::OnChangingPosition(const CVector& vecNewPosition)
     }
 }
 
+void CVehicleSA::StaticSetHooks()
+{
+    // Setup vehicle sun glare hook
+    HookInstall(FUNC_CAutomobile_OnVehiclePreRender, (DWORD)HOOK_Vehicle_PreRender, 5);
+}
+
+void CVehicleSA::SetVehiclesSunGlareEnable(bool bEnabled)
+{
+    m_bVehicleSunGlare = bEnabled;
+}
+
+bool CVehicleSA::GetVehiclesSunGlareEnable()
+{
+    return m_bVehicleSunGlare;
+}
+
 namespace
 {
     VOID _MatrixConvertFromEulerAngles(CMatrix_Padded* matrixPadded, float fX, float fY, float fZ)

Client/game_sa/CVehicleSA.h

@@ -164,6 +164,10 @@ class CVehicleSA;
 #define VAR_CVehicle_Variation1                 0x8A6458
 #define VAR_CVehicle_Variation2                 0x8A6459
 
+// for vehicle sun glare
+#define FUNC_CAutomobile_OnVehiclePreRender 0x6ABCFD
+#define FUNC_CVehicle_DoSunGlare            0x6DD6F0
+
 struct SRailNodeSA
 {
     short sX;                       // x coordinate times 8
@@ -769,6 +773,10 @@ class CVehicleSA : public virtual CVehicle, public virtual CPhysicalSA
     CVector*       GetDummyPositions() { return m_dummyPositions.data(); }
     const CVector* GetDummyPositions() const override { return m_dummyPositions.data(); }
 
+    static void StaticSetHooks();
+    static void SetVehiclesSunGlareEnable(bool bEnabled);
+    static bool GetVehiclesSunGlareEnable();
+
 private:
     static void SetAutomobileDummyPosition(CAutomobileSAInterface* automobile, eVehicleDummies dummy, const CVector& position);