3 files changed, 622 insertions, 4 deletions

diff --git a/src/core/Pools.cpp b/src/core/Pools.cpp
index 4f4588da..8c979f6e 100644
--- a/src/core/Pools.cpp
+++ b/src/core/Pools.cpp
@@ -110,17 +110,31 @@ INITSAVEBUF
 		CStreaming::LoadAllRequestedModels(false);
 		int32 slot = ReadSaveBuf<int32>(buf);
 		CVehicle* pVehicle;
+#ifdef COMPATIBLE_SAVES
+		char* vbuf = new char[Max(sizeof(CAutomobile_FS), sizeof(CBoat_FS))];
+#else
 		char* vbuf = new char[Max(sizeof(CAutomobile), sizeof(CBoat))];
+#endif
 		if (type == VEHICLE_TYPE_BOAT) {
+#ifdef COMPATIBLE_SAVES
+			memcpy(vbuf, buf, sizeof(CBoat_FS));
+			SkipSaveBuf(buf, sizeof(CBoat_FS));
+#else
 			memcpy(vbuf, buf, sizeof(CBoat));
 			SkipSaveBuf(buf, sizeof(CBoat));
+#endif
 			CBoat* pBoat = new(slot) CBoat(model, RANDOM_VEHICLE);
 			pVehicle = pBoat;
 			--CCarCtrl::NumRandomCars; // why?
 		}
 		else if (type == VEHICLE_TYPE_CAR) {
+#ifdef COMPATIBLE_SAVES
+			memcpy(vbuf, buf, sizeof(CAutomobile_FS));
+			SkipSaveBuf(buf, sizeof(CAutomobile_FS));
+#else
 			memcpy(vbuf, buf, sizeof(CAutomobile));
 			SkipSaveBuf(buf, sizeof(CAutomobile));
+#endif
 			CStreaming::RequestModel(model, 0); // is it needed?
 			CStreaming::LoadAllRequestedModels(false);
 			CAutomobile* pAutomobile = new(slot) CAutomobile(model, RANDOM_VEHICLE);
@@ -131,6 +145,10 @@ INITSAVEBUF
 		}
 		else
 			assert(0);
+#ifdef COMPATIBLE_SAVES
+		CVehicle_FS* pBufferVehicle = (CVehicle_FS*)vbuf;
+		pBufferVehicle->Restore(pVehicle);
+#else
 		CVehicle* pBufferVehicle = (CVehicle*)vbuf;
 		pVehicle->GetMatrix() = pBufferVehicle->GetMatrix();
 		pVehicle->VehicleCreatedBy = pBufferVehicle->VehicleCreatedBy;
@@ -166,6 +184,7 @@ INITSAVEBUF
 		(pVehicle->GetAddressOfEntityProperties())[0] = (pBufferVehicle->GetAddressOfEntityProperties())[0];
 		(pVehicle->GetAddressOfEntityProperties())[1] = (pBufferVehicle->GetAddressOfEntityProperties())[1];
 		pVehicle->AutoPilot = pBufferVehicle->AutoPilot;
+#endif
 		CWorld::Add(pVehicle);
 		delete[] vbuf;
 	}
@@ -184,7 +203,7 @@ INITSAVEBUF
 			continue;
 		bool bHasPassenger = false;
 		for (int j = 0; j < ARRAY_SIZE(pVehicle->pPassengers); j++) {
-			if (pVehicle->pPassengers[i])
+			if (pVehicle->pPassengers[j])
 				bHasPassenger = true;
 		}
 		if (!pVehicle->pDriver && !bHasPassenger) {
@@ -194,8 +213,20 @@ INITSAVEBUF
 				++nNumBoats;
 		}
 	}
-	*size = nNumCars * (sizeof(uint32) + sizeof(int16) + sizeof(int32) + sizeof(CAutomobile)) + sizeof(int) +
-		nNumBoats * (sizeof(uint32) + sizeof(int16) + sizeof(int32) + sizeof(CBoat)) + sizeof(int);
+	*size = nNumCars * (sizeof(uint32) + sizeof(int16) + sizeof(int32) +
+#ifdef COMPATIBLE_SAVES
+		sizeof(CAutomobile_FS)) +
+#else
+		sizeof(CAutomobile)) +
+#endif
+		sizeof(int) +
+		nNumBoats * (sizeof(uint32) + sizeof(int16) + sizeof(int32) +
+#ifdef COMPATIBLE_SAVES
+			sizeof(CBoat_FS)) +
+#else
+			sizeof(CBoat)) +
+#endif
+		sizeof(int);
 	WriteSaveBuf(buf, nNumCars);
 	WriteSaveBuf(buf, nNumBoats);
 	for (int i = 0; i < nPoolSize; i++) {
@@ -212,8 +243,15 @@ INITSAVEBUF
 				WriteSaveBuf(buf, (uint32)pVehicle->m_vehType);
 				WriteSaveBuf(buf, pVehicle->m_modelIndex);
 				WriteSaveBuf(buf, GetVehicleRef(pVehicle));
+#ifdef COMPATIBLE_SAVES
+				((CVehicle_FS*)buf)->Store(pVehicle);
+				SkipSaveBuf(buf, sizeof(CVehicle_FS));
+				WriteSaveBuf(buf, ((CAutomobile*)pVehicle)->Damage);
+				SkipSaveBuf(buf, sizeof(CAutomobile_FS) - sizeof(CVehicle_FS) - sizeof(CDamageManager));
+#else
 				memcpy(buf, pVehicle, sizeof(CAutomobile));
 				SkipSaveBuf(buf, sizeof(CAutomobile));
+#endif
 			}
 			if (pVehicle->IsBoat() && pVehicle->VehicleCreatedBy == MISSION_VEHICLE) {
 				WriteSaveBuf(buf, (uint32)pVehicle->m_vehType);
@@ -279,8 +317,14 @@ INITSAVEBUF
 			WriteSaveBuf(buf, pObject->m_nCollisionDamageEffect);
 			WriteSaveBuf(buf, pObject->m_nSpecialCollisionResponseCases);
 			WriteSaveBuf(buf, pObject->m_nEndOfLifeTime);
+#ifdef COMPATIBLE_SAVES
+			CEntityProperties properties;
+			properties.Store(pObject);
+			WriteSaveBuf(buf, properties);
+#else
 			WriteSaveBuf(buf, (pObject->GetAddressOfEntityProperties())[0]);
 			WriteSaveBuf(buf, (pObject->GetAddressOfEntityProperties())[1]);
+#endif
 		}
 	}
 VALIDATESAVEBUF(*size)
@@ -315,8 +359,12 @@ INITSAVEBUF
 		pBufferObject->m_nCollisionDamageEffect = ReadSaveBuf<uint8>(buf);
 		pBufferObject->m_nSpecialCollisionResponseCases = ReadSaveBuf<uint8>(buf);
 		pBufferObject->m_nEndOfLifeTime = ReadSaveBuf<uint32>(buf);
+#ifdef COMPATIBLE_SAVES
+		CEntityProperties properties = ReadSaveBuf<CEntityProperties>(buf);
+#else
 		(pBufferObject->GetAddressOfEntityProperties())[0] = ReadSaveBuf<uint32>(buf);
 		(pBufferObject->GetAddressOfEntityProperties())[1] = ReadSaveBuf<uint32>(buf);
+#endif
 		if (GetObjectPool()->GetSlot(ref >> 8))
 			CPopulation::ConvertToDummyObject(GetObjectPool()->GetSlot(ref >> 8));
 		CObject* pObject = new(ref) CObject(mi, false);
@@ -335,8 +383,12 @@ INITSAVEBUF
 		pObject->m_nCollisionDamageEffect = pBufferObject->m_nCollisionDamageEffect;
 		pObject->m_nSpecialCollisionResponseCases = pBufferObject->m_nSpecialCollisionResponseCases;
 		pObject->m_nEndOfLifeTime = pBufferObject->m_nEndOfLifeTime;
+#ifdef COMPATIBLE_SAVES
+		properties.Restore(pObject);
+#else
 		(pObject->GetAddressOfEntityProperties())[0] = (pBufferObject->GetAddressOfEntityProperties())[0];
 		(pObject->GetAddressOfEntityProperties())[1] = (pBufferObject->GetAddressOfEntityProperties())[1];
+#endif
 		pObject->bHasCollided = false;
 		CWorld::Add(pObject);
 		delete[] obuf;
@@ -356,7 +408,12 @@ INITSAVEBUF
 		if (!pPed->bInVehicle && pPed->m_nPedType == PEDTYPE_PLAYER1)
 			nNumPeds++;
 	}
-	*size = sizeof(int) + nNumPeds * (sizeof(uint32) + sizeof(int16) + sizeof(int) + sizeof(CPlayerPed) +
+	*size = sizeof(int) + nNumPeds * (sizeof(uint32) + sizeof(int16) + sizeof(int) +
+#ifdef COMPATIBLE_SAVES
+		sizeof(CPlayerPed_FS) +
+#else
+		sizeof(CPlayerPed) +
+#endif
 		sizeof(CWanted::MaximumWantedLevel) + sizeof(CWanted::nMaximumWantedLevel) + MAX_MODEL_NAME);
 	WriteSaveBuf(buf, nNumPeds);
 	for (int i = 0; i < nPoolSize; i++) {
@@ -367,8 +424,14 @@ INITSAVEBUF
 			WriteSaveBuf(buf, pPed->m_nPedType);
 			WriteSaveBuf(buf, pPed->m_modelIndex);
 			WriteSaveBuf(buf, GetPedRef(pPed));
+#ifdef COMPATIBLE_SAVES
+			((CPlayerPed_FS*)buf)->StorePlayerPed((CPlayerPed*)pPed);
+			((CPlayerPed_FS*)buf)->StorePed(pPed);
+			SkipSaveBuf(buf, sizeof(CPlayerPed_FS));
+#else
 			memcpy(buf, pPed, sizeof(CPlayerPed));
 			SkipSaveBuf(buf, sizeof(CPlayerPed));
+#endif
 			WriteSaveBuf(buf, CWanted::MaximumWantedLevel);
 			WriteSaveBuf(buf, CWanted::nMaximumWantedLevel);
 			memcpy(buf, CModelInfo::GetModelInfo(pPed->GetModelIndex())->GetName(), MAX_MODEL_NAME);
@@ -386,14 +449,24 @@ INITSAVEBUF
 		uint32 pedtype = ReadSaveBuf<uint32>(buf);
 		int16 model = ReadSaveBuf<int16>(buf);
 		int ref = ReadSaveBuf<int>(buf);
+#ifdef COMPATIBLE_SAVES
+		char* pbuf = new char[sizeof(CPlayerPed_FS)];
+		CPlayerPed_FS* pBufferPlayer = (CPlayerPed_FS*)buf;
+#else
 		char* pbuf = new char[sizeof(CPlayerPed)];
 		CPlayerPed* pBufferPlayer = (CPlayerPed*)pbuf;
+#endif
 		CPed* pPed;
 		char name[MAX_MODEL_NAME];
 		// the code implies that there was idea to load non-player ped
 		if (pedtype == PEDTYPE_PLAYER1) { // always true
+#ifdef COMPATIBLE_SAVES
+			memcpy(pbuf, buf, sizeof(CPlayerPed_FS));
+			SkipSaveBuf(buf, sizeof(CPlayerPed_FS));
+#else
 			memcpy(pbuf, buf, sizeof(CPlayerPed));
 			SkipSaveBuf(buf, sizeof(CPlayerPed));
+#endif
 			CWanted::MaximumWantedLevel = ReadSaveBuf<int32>(buf);
 			CWanted::nMaximumWantedLevel = ReadSaveBuf<int32>(buf);
 			memcpy(name, buf, MAX_MODEL_NAME);
@@ -403,11 +476,19 @@ INITSAVEBUF
 		CStreaming::LoadAllRequestedModels(false);
 		if (pedtype == PEDTYPE_PLAYER1) {
 			CPlayerPed* pPlayerPed = new(ref) CPlayerPed();
+#ifdef COMPATIBLE_SAVES
+			pBufferPlayer->RestorePlayerPed(pPlayerPed);
+#else
 			for (int i = 0; i < ARRAY_SIZE(pPlayerPed->m_nTargettableObjects); i++)
 				pPlayerPed->m_nTargettableObjects[i] = pBufferPlayer->m_nTargettableObjects[i];
 			pPlayerPed->m_fMaxStamina = pBufferPlayer->m_fMaxStamina;
+#endif
 			pPed = pPlayerPed;
 		}
+#ifdef COMPATIBLE_SAVES
+		pBufferPlayer->RestorePed(pPed);
+		pPed->m_currentWeapon = 0;
+#else
 		pPed->GetPosition() = pBufferPlayer->GetPosition();
 		pPed->m_fHealth = pBufferPlayer->m_fHealth;
 		pPed->m_fArmour = pBufferPlayer->m_fArmour;
@@ -416,6 +497,7 @@ INITSAVEBUF
 		pPed->m_maxWeaponTypeAllowed = pBufferPlayer->m_maxWeaponTypeAllowed;
 		for (int i = 0; i < WEAPONTYPE_TOTAL_INVENTORY_WEAPONS; i++)
 			pPed->m_weapons[i] = pBufferPlayer->m_weapons[i];
+#endif
 		if (pedtype == PEDTYPE_PLAYER1) {
 			pPed->m_wepAccuracy = 100;
 			CWorld::Players[0].m_pPed = (CPlayerPed*)pPed;
diff --git a/src/core/Pools.h b/src/core/Pools.h
index b0ba6598..6e5b0ac1 100644
--- a/src/core/Pools.h
+++ b/src/core/Pools.h
@@ -59,3 +59,537 @@ public:
 	static void SavePedPool(uint8 *buf, uint32 *size);
 	static void SaveVehiclePool(uint8 *buf, uint32 *size);
 };
+
+#ifdef COMPATIBLE_SAVES
+
+// Following stuff allows changing structures like CPed, CAutomobile and CBoat without breaking compatibility with original saves.
+
+// For saving we have to assume that sizeof(void*) == 4, so we use int32 everywhere.
+// It will break some pointers, but saving them makes no sense anyway.
+
+struct CEntityProperties
+{
+	// these properties are defined exactly as in original game
+
+	uint32 m_type : 3;
+	uint32 m_status : 5;
+
+	// flagsA
+	uint32 bUsesCollision : 1;			// does entity use collision
+	uint32 bCollisionProcessed : 1;		// has object been processed by a ProcessEntityCollision function
+	uint32 bIsStatic : 1;				// is entity static
+	uint32 bHasContacted : 1;			// has entity processed some contact forces
+	uint32 bPedPhysics : 1;
+	uint32 bIsStuck : 1;				// is entity stuck
+	uint32 bIsInSafePosition : 1;		// is entity in a collision free safe position
+	uint32 bUseCollisionRecords : 1;
+
+	// flagsB
+	uint32 bWasPostponed : 1;			// was entity control processing postponed
+	uint32 bExplosionProof : 1;
+	uint32 bIsVisible : 1;				//is the entity visible
+	uint32 bHasCollided : 1;
+	uint32 bRenderScorched : 1;
+	uint32 bHasBlip : 1;
+	uint32 bIsBIGBuilding : 1;			// Set if this entity is a big building
+	// VC inserts one more flag here: if drawdist <= 2000
+	uint32 bRenderDamaged : 1;			// use damaged LOD models for objects with applicable damage
+
+	// flagsC
+	uint32 bBulletProof : 1;
+	uint32 bFireProof : 1;
+	uint32 bCollisionProof : 1;
+	uint32 bMeleeProof : 1;
+	uint32 bOnlyDamagedByPlayer : 1;
+	uint32 bStreamingDontDelete : 1;	// Dont let the streaming remove this 
+	uint32 bZoneCulled : 1;
+	uint32 bZoneCulled2 : 1;    // only treadables+10m
+
+	// flagsD
+	uint32 bRemoveFromWorld : 1;		// remove this entity next time it should be processed
+	uint32 bHasHitWall : 1;				// has collided with a building (changes subsequent collisions)
+	uint32 bImBeingRendered : 1;		// don't delete me because I'm being rendered
+	uint32 bTouchingWater : 1;	// used by cBuoyancy::ProcessBuoyancy
+	uint32 bIsSubway : 1;	// set when subway, but maybe different meaning?
+	uint32 bDrawLast : 1;				// draw object last
+	uint32 bNoBrightHeadLights : 1;
+	uint32 bDoNotRender : 1;
+
+	// flagsE
+	uint32 bDistanceFade : 1;			// Fade entity because it is far away
+	uint32 m_flagE2 : 1;
+
+	void Store(CEntity* pEntity)
+	{
+		m_type = pEntity->m_type;
+		m_status = pEntity->m_status;
+		bUsesCollision = pEntity->bUsesCollision;
+		bCollisionProcessed = pEntity->bCollisionProcessed;
+		bIsStatic = pEntity->bIsStatic;
+		bHasContacted = pEntity->bHasContacted;
+		bPedPhysics = pEntity->bPedPhysics;
+		bIsStuck = pEntity->bIsStuck;
+		bIsInSafePosition = pEntity->bIsInSafePosition;
+		bUseCollisionRecords = pEntity->bUseCollisionRecords;
+		bWasPostponed = pEntity->bWasPostponed;
+		bExplosionProof = pEntity->bExplosionProof;
+		bIsVisible = pEntity->bIsVisible;
+		bHasCollided = pEntity->bHasCollided;
+		bRenderScorched = pEntity->bRenderScorched;
+		bHasBlip = pEntity->bHasBlip;
+		bIsBIGBuilding = pEntity->bIsBIGBuilding;
+		bRenderDamaged = pEntity->bRenderDamaged;
+		bBulletProof = pEntity->bBulletProof;
+		bFireProof = pEntity->bFireProof;
+		bCollisionProof = pEntity->bCollisionProof;
+		bMeleeProof = pEntity->bMeleeProof;
+		bOnlyDamagedByPlayer = pEntity->bOnlyDamagedByPlayer;
+		bStreamingDontDelete = pEntity->bStreamingDontDelete;
+		bZoneCulled = pEntity->bZoneCulled;
+		bZoneCulled2 = pEntity->bZoneCulled2;
+		bRemoveFromWorld = pEntity->bRemoveFromWorld;
+		bHasHitWall = pEntity->bHasHitWall;
+		bImBeingRendered = pEntity->bImBeingRendered;
+		bTouchingWater = pEntity->bTouchingWater;
+		bIsSubway = pEntity->bIsSubway;
+		bDrawLast = pEntity->bDrawLast;
+		bNoBrightHeadLights = pEntity->bNoBrightHeadLights;
+		bDoNotRender = pEntity->bDoNotRender;
+		bDistanceFade = pEntity->bDistanceFade;
+		m_flagE2 = pEntity->m_flagE2;
+	}
+
+	void Restore(CEntity* pEntity)
+	{
+		pEntity->m_type = m_type;
+		pEntity->m_status = m_status;
+		pEntity->bUsesCollision = bUsesCollision;
+		pEntity->bCollisionProcessed = bCollisionProcessed;
+		pEntity->bIsStatic = bIsStatic;
+		pEntity->bHasContacted = bHasContacted;
+		pEntity->bPedPhysics = bPedPhysics;
+		pEntity->bIsStuck = bIsStuck;
+		pEntity->bIsInSafePosition = bIsInSafePosition;
+		pEntity->bUseCollisionRecords = bUseCollisionRecords;
+		pEntity->bWasPostponed = bWasPostponed;
+		pEntity->bExplosionProof = bExplosionProof;
+		pEntity->bIsVisible = bIsVisible;
+		pEntity->bHasCollided = bHasCollided;
+		pEntity->bRenderScorched = bRenderScorched;
+		pEntity->bHasBlip = bHasBlip;
+		pEntity->bIsBIGBuilding = bIsBIGBuilding;
+		pEntity->bRenderDamaged = bRenderDamaged;
+		pEntity->bBulletProof = bBulletProof;
+		pEntity->bFireProof = bFireProof;
+		pEntity->bCollisionProof = bCollisionProof;
+		pEntity->bMeleeProof = bMeleeProof;
+		pEntity->bOnlyDamagedByPlayer = bOnlyDamagedByPlayer;
+		pEntity->bStreamingDontDelete = bStreamingDontDelete;
+		pEntity->bZoneCulled = bZoneCulled;
+		pEntity->bZoneCulled2 = bZoneCulled2;
+		pEntity->bRemoveFromWorld = bRemoveFromWorld;
+		pEntity->bHasHitWall = bHasHitWall;
+		pEntity->bImBeingRendered = bImBeingRendered;
+		pEntity->bTouchingWater = bTouchingWater;
+		pEntity->bIsSubway = bIsSubway;
+		pEntity->bDrawLast = bDrawLast;
+		pEntity->bNoBrightHeadLights = bNoBrightHeadLights;
+		pEntity->bDoNotRender = bDoNotRender;
+		pEntity->bDistanceFade = bDistanceFade;
+		pEntity->m_flagE2 = m_flagE2;
+	}
+};
+
+VALIDATE_SIZE(CEntityProperties, 8);
+
+struct CAutoPilot_FS
+{
+	int32 m_nCurrentRouteNode;
+	int32 m_nNextRouteNode;
+	int32 m_nPrevRouteNode;
+	uint32 m_nTimeEnteredCurve;
+	uint32 m_nTimeToSpendOnCurrentCurve;
+	uint32 m_nCurrentPathNodeInfo;
+	uint32 m_nNextPathNodeInfo;
+	uint32 m_nPreviousPathNodeInfo;
+	uint32 m_nAntiReverseTimer;
+	uint32 m_nTimeToStartMission;
+	int8 m_nPreviousDirection;
+	int8 m_nCurrentDirection;
+	int8 m_nNextDirection;
+	int8 m_nCurrentLane;
+	int8 m_nNextLane;
+	uint8 m_nDrivingStyle;
+	uint8 m_nCarMission;
+	uint8 m_nTempAction;
+	uint32 m_nTimeTempAction;
+	float m_fMaxTrafficSpeed;
+	uint8 m_nCruiseSpeed;
+	uint8 m_bSlowedDownBecauseOfCars : 1;
+	uint8 m_bSlowedDownBecauseOfPeds : 1;
+	uint8 m_bStayInCurrentLevel : 1;
+	uint8 m_bStayInFastLane : 1;
+	uint8 m_bIgnorePathfinding : 1;
+	float m_vecDestinationCoors[3];
+	int32 m_aPathFindNodesInfo[8]; // CPathNode* [NUM_PATH_NODES_IN_AUTOPILOT]
+	int16 m_nPathFindNodesCount;
+	int32 m_pTargetCar;
+	
+	void Store(CAutoPilot* pAutoPilot)
+	{
+		m_nCurrentRouteNode = pAutoPilot->m_nCurrentRouteNode;
+		m_nNextRouteNode = pAutoPilot->m_nNextRouteNode;
+		m_nPrevRouteNode = pAutoPilot->m_nPrevRouteNode;
+		m_nTimeEnteredCurve = pAutoPilot->m_nTimeEnteredCurve;
+		m_nTimeToSpendOnCurrentCurve = pAutoPilot->m_nTimeToSpendOnCurrentCurve;
+		m_nCurrentPathNodeInfo = pAutoPilot->m_nCurrentPathNodeInfo;
+		m_nNextPathNodeInfo = pAutoPilot->m_nNextPathNodeInfo;
+		m_nPreviousPathNodeInfo = pAutoPilot->m_nPreviousPathNodeInfo;
+		m_nAntiReverseTimer = pAutoPilot->m_nAntiReverseTimer;
+		m_nTimeToStartMission = pAutoPilot->m_nTimeToStartMission;
+		m_nPreviousDirection = pAutoPilot->m_nPreviousDirection;
+		m_nCurrentDirection = pAutoPilot->m_nCurrentDirection;
+		m_nNextDirection = pAutoPilot->m_nNextDirection;
+		m_nCurrentLane = pAutoPilot->m_nCurrentLane;
+		m_nNextLane = pAutoPilot->m_nNextLane;
+		m_nDrivingStyle = pAutoPilot->m_nDrivingStyle;
+		m_nCarMission = pAutoPilot->m_nCarMission;
+		m_nTempAction = pAutoPilot->m_nTempAction;
+		m_nTimeTempAction = pAutoPilot->m_nTimeTempAction;
+		m_fMaxTrafficSpeed = pAutoPilot->m_fMaxTrafficSpeed;
+		m_nCruiseSpeed = pAutoPilot->m_nCruiseSpeed;
+		m_bSlowedDownBecauseOfCars = pAutoPilot->m_bSlowedDownBecauseOfCars;
+		m_bSlowedDownBecauseOfPeds = pAutoPilot->m_bSlowedDownBecauseOfPeds;
+		m_bStayInCurrentLevel = pAutoPilot->m_bStayInCurrentLevel;
+		m_bStayInFastLane = pAutoPilot->m_bStayInFastLane;
+		m_bIgnorePathfinding  = pAutoPilot->m_bIgnorePathfinding;
+		m_vecDestinationCoors[0] = pAutoPilot->m_vecDestinationCoors.x;
+		m_vecDestinationCoors[1] = pAutoPilot->m_vecDestinationCoors.y;
+		m_vecDestinationCoors[2] = pAutoPilot->m_vecDestinationCoors.z;
+		for (int i = 0; i < 8; i++)
+			m_aPathFindNodesInfo[i] = 0;
+		m_nPathFindNodesCount = pAutoPilot->m_nPathFindNodesCount;
+		m_pTargetCar = 0;
+	}
+
+	void Restore(CAutoPilot* pAutoPilot)
+	{
+		pAutoPilot->m_nCurrentRouteNode = m_nCurrentRouteNode;
+		pAutoPilot->m_nNextRouteNode = m_nNextRouteNode;
+		pAutoPilot->m_nPrevRouteNode = m_nPrevRouteNode;
+		pAutoPilot->m_nTimeEnteredCurve = m_nTimeEnteredCurve;
+		pAutoPilot->m_nTimeToSpendOnCurrentCurve = m_nTimeToSpendOnCurrentCurve;
+		pAutoPilot->m_nCurrentPathNodeInfo = m_nCurrentPathNodeInfo;
+		pAutoPilot->m_nNextPathNodeInfo = m_nNextPathNodeInfo;
+		pAutoPilot->m_nPreviousPathNodeInfo = m_nPreviousPathNodeInfo;
+		pAutoPilot->m_nAntiReverseTimer = m_nAntiReverseTimer;
+		pAutoPilot->m_nTimeToStartMission = m_nTimeToStartMission;
+		pAutoPilot->m_nPreviousDirection = m_nPreviousDirection;
+		pAutoPilot->m_nCurrentDirection = m_nCurrentDirection;
+		pAutoPilot->m_nNextDirection = m_nNextDirection;
+		pAutoPilot->m_nCurrentLane = m_nCurrentLane;
+		pAutoPilot->m_nNextLane = m_nNextLane;
+		pAutoPilot->m_nDrivingStyle = (eCarDrivingStyle)m_nDrivingStyle;
+		pAutoPilot->m_nCarMission = (eCarMission)m_nCarMission;
+		pAutoPilot->m_nTempAction = (eCarTempAction)m_nTempAction;
+		pAutoPilot->m_nTimeTempAction = m_nTimeTempAction;
+		pAutoPilot->m_fMaxTrafficSpeed = m_fMaxTrafficSpeed;
+		pAutoPilot->m_nCruiseSpeed = m_nCruiseSpeed;
+		pAutoPilot->m_bSlowedDownBecauseOfCars = m_bSlowedDownBecauseOfCars;
+		pAutoPilot->m_bSlowedDownBecauseOfPeds = m_bSlowedDownBecauseOfPeds;
+		pAutoPilot->m_bStayInCurrentLevel = m_bStayInCurrentLevel;
+		pAutoPilot->m_bStayInFastLane = m_bStayInFastLane;
+		pAutoPilot->m_bIgnorePathfinding = m_bIgnorePathfinding;
+		pAutoPilot->m_vecDestinationCoors.x = m_vecDestinationCoors[0];
+		pAutoPilot->m_vecDestinationCoors.y = m_vecDestinationCoors[1];
+		pAutoPilot->m_vecDestinationCoors.z = m_vecDestinationCoors[2];
+		for (int i = 0; i < NUM_PATH_NODES_IN_AUTOPILOT; i++)
+			pAutoPilot->m_aPathFindNodesInfo[i] = nil;
+		pAutoPilot->m_nPathFindNodesCount = m_nPathFindNodesCount;
+		pAutoPilot->m_pTargetCar = nil;
+	}
+};
+
+struct CMatrix_FS
+{
+	float right[3];
+	uint8 gap1[4];
+	float forward[3];
+	uint8 gap2[4];
+	float up[3];
+	uint8 gap3[4];
+	float pos[3];
+	uint8 gap4[12];
+
+	void Store(CMatrix* pMatrix)
+	{
+		right[0] = pMatrix->GetRight().x;
+		right[1] = pMatrix->GetRight().y;
+		right[2] = pMatrix->GetRight().z;
+		forward[0] = pMatrix->GetForward().x;
+		forward[1] = pMatrix->GetForward().y;
+		forward[2] = pMatrix->GetForward().z;
+		up[0] = pMatrix->GetUp().x;
+		up[1] = pMatrix->GetUp().y;
+		up[2] = pMatrix->GetUp().z;
+		pos[0] = pMatrix->GetPosition().x;
+		pos[1] = pMatrix->GetPosition().y;
+		pos[2] = pMatrix->GetPosition().z;
+	}
+
+	void Restore(CMatrix* pMatrix)
+	{
+		CMatrix tmp;
+		tmp.GetRight().x = right[0];
+		tmp.GetRight().y = right[1];
+		tmp.GetRight().z = right[2];
+		tmp.GetForward().x = forward[0];
+		tmp.GetForward().y = forward[1];
+		tmp.GetForward().z = forward[2];
+		tmp.GetUp().x = up[0];
+		tmp.GetUp().y = up[1];
+		tmp.GetUp().z = up[2];
+		tmp.GetPosition().x = pos[0];
+		tmp.GetPosition().y = pos[1];
+		tmp.GetPosition().z = pos[2];
+		*pMatrix = tmp;
+	}
+};
+
+VALIDATE_SIZE(CMatrix_FS, 72);
+
+struct CVehicle_FS
+{
+	uint32 vtable;
+	CMatrix_FS matrix;
+	uint8 gap1[4];
+	CEntityProperties properties;
+	uint8 gap2[212];
+	CAutoPilot_FS AutoPilot;
+	uint8 m_currentColour1;
+	uint8 m_currentColour2;
+	uint8 gap3[2];
+	int16 m_nAlarmState;
+	int8 gap4[43];
+	uint8 m_nNumMaxPassengers;
+	float field_1D0[4];
+	uint8 gap5[8];
+	float m_fSteerAngle;
+	float m_fGasPedal;
+	float m_fBrakePedal;
+	uint8 VehicleCreatedBy;
+
+	// cf. https://github.com/DK22Pac/plugin-sdk/blob/master/plugin_sa/game_sa/CVehicle.h from R*
+	uint8 bIsLawEnforcer : 1; // Is this guy chasing the player at the moment
+	uint8 gap_b1 : 1;
+	uint8 gap_b2 : 1;
+	uint8 bIsLocked : 1; // Is this guy locked by the script (cannot be removed)
+	uint8 bEngineOn : 1; // For sound purposes. Parked cars have their engines switched off (so do destroyed cars)
+	uint8 bIsHandbrakeOn : 1; // How's the handbrake doing ?
+	uint8 bLightsOn : 1; // Are the lights switched on ?
+	uint8 bFreebies : 1; // Any freebies left in this vehicle ?
+
+	uint8 gap6[3];
+
+	uint8 gap7[6];
+	float m_fHealth;           // 1000.0f = full health. 250.0f = fire. 0 -> explode
+	uint8 m_nCurrentGear;
+	float m_fChangeGearTime;
+	uint8 gap8[4];
+	uint32 m_nTimeOfDeath;
+	uint8 gap9[2];
+	int16 m_nBombTimer;
+	uint8 gap10[12];
+	int8 m_nDoorLock;
+	uint8 gap11[96];
+
+	void Store(CVehicle* pVehicle)
+	{
+		matrix.Store(&pVehicle->GetMatrix());
+		VehicleCreatedBy = pVehicle->VehicleCreatedBy;
+		m_currentColour1 = pVehicle->m_currentColour1;
+		m_currentColour2 = pVehicle->m_currentColour2;
+		m_nAlarmState = pVehicle->m_nAlarmState;
+		m_nNumMaxPassengers = pVehicle->m_nNumMaxPassengers;
+		field_1D0[0] = pVehicle->field_1D0[0];
+		field_1D0[1] = pVehicle->field_1D0[1];
+		field_1D0[2] = pVehicle->field_1D0[2];
+		field_1D0[3] = pVehicle->field_1D0[3];
+		m_fSteerAngle = pVehicle->m_fSteerAngle;
+		m_fGasPedal = pVehicle->m_fGasPedal;
+		m_fBrakePedal = pVehicle->m_fBrakePedal;
+		bIsLawEnforcer = pVehicle->bIsLawEnforcer;
+		bIsLocked = pVehicle->bIsLocked;
+		bEngineOn = pVehicle->bEngineOn;
+		bIsHandbrakeOn = pVehicle->bIsHandbrakeOn;
+		bLightsOn = pVehicle->bLightsOn;
+		bFreebies = pVehicle->bFreebies;
+		m_fHealth = pVehicle->m_fHealth;
+		m_nCurrentGear = pVehicle->m_nCurrentGear;
+		m_fChangeGearTime = pVehicle->m_fChangeGearTime;
+		m_nTimeOfDeath = pVehicle->m_nTimeOfDeath;
+#ifdef FIX_BUGS //must be copypaste
+		m_nBombTimer = pVehicle->m_nBombTimer;
+#else
+		m_nTimeOfDeath = pVehicle->m_nTimeOfDeath;
+#endif
+		m_nDoorLock = pVehicle->m_nDoorLock;
+		properties.Store(pVehicle);
+		AutoPilot.Store(&pVehicle->AutoPilot);
+	}
+	
+	void Restore(CVehicle* pVehicle)
+	{
+		matrix.Restore(&pVehicle->GetMatrix());
+		pVehicle->VehicleCreatedBy = VehicleCreatedBy;
+		pVehicle->m_currentColour1 = m_currentColour1;
+		pVehicle->m_currentColour2 = m_currentColour2;
+		pVehicle->m_nAlarmState = m_nAlarmState;
+		pVehicle->m_nNumMaxPassengers = m_nNumMaxPassengers;
+		pVehicle->field_1D0[0] = field_1D0[0];
+		pVehicle->field_1D0[1] = field_1D0[1];
+		pVehicle->field_1D0[2] = field_1D0[2];
+		pVehicle->field_1D0[3] = field_1D0[3];
+		pVehicle->m_fSteerAngle = m_fSteerAngle;
+		pVehicle->m_fGasPedal = m_fGasPedal;
+		pVehicle->m_fBrakePedal = m_fBrakePedal;
+		pVehicle->bIsLawEnforcer = bIsLawEnforcer;
+		pVehicle->bIsLocked = bIsLocked;
+		pVehicle->bEngineOn = bEngineOn;
+		pVehicle->bIsHandbrakeOn = bIsHandbrakeOn;
+		pVehicle->bLightsOn = bLightsOn;
+		pVehicle->bFreebies = bFreebies;
+		pVehicle->m_fHealth = m_fHealth;
+		pVehicle->m_nCurrentGear = m_nCurrentGear;
+		pVehicle->m_fChangeGearTime = m_fChangeGearTime;
+		pVehicle->m_nTimeOfDeath = m_nTimeOfDeath;
+#ifdef FIX_BUGS //must be copypaste
+		pVehicle->m_nBombTimer = m_nBombTimer;
+#else
+		pVehicle->m_nTimeOfDeath = m_nTimeOfDeath;
+#endif
+		pVehicle->m_nDoorLock = (eCarLock)m_nDoorLock;
+		properties.Restore(pVehicle);
+		AutoPilot.Restore(&pVehicle->AutoPilot);
+	}
+};
+
+VALIDATE_SIZE(CVehicle_FS, 648);
+
+static_assert(sizeof(CDamageManager) < 1448 - sizeof(CVehicle_FS), "CDamageManager size too big to keep saves compatible");
+
+struct CAutomobile_FS
+{
+	CVehicle_FS vehicle;
+	CDamageManager Damage;
+	char gap[1448 - sizeof(CVehicle_FS) - sizeof(CDamageManager)]; // even allows increasing size of CDamageManager
+};
+
+struct CBoat_FS
+{
+	CVehicle_FS vehicle;
+	char gap[1156 - sizeof(CVehicle_FS)];
+};
+
+VALIDATE_SIZE(CAutomobile_FS, 1448);
+VALIDATE_SIZE(CBoat_FS, 1156);
+
+struct CWeapon_FS
+{
+	int32 m_eWeaponType;
+	int32 m_eWeaponState;
+	uint32 m_nAmmoInClip;
+	uint32 m_nAmmoTotal;
+	uint32 m_nTimer;
+	bool m_bAddRotOffset;
+
+	void Store(CWeapon* pWeapon)
+	{
+		m_eWeaponType = pWeapon->m_eWeaponType;
+		m_eWeaponState = pWeapon->m_eWeaponState;
+		m_nAmmoInClip = pWeapon->m_nAmmoInClip;
+		m_nAmmoTotal = pWeapon->m_nAmmoTotal;
+		m_nTimer = pWeapon->m_nTimer;
+		m_bAddRotOffset = pWeapon->m_bAddRotOffset;
+	}
+
+	void Restore(CWeapon* pWeapon)
+	{
+		pWeapon->m_eWeaponType = (eWeaponType)m_eWeaponType;
+		pWeapon->m_eWeaponState = (eWeaponState)m_eWeaponState;
+		pWeapon->m_nAmmoInClip = m_nAmmoInClip;
+		pWeapon->m_nAmmoTotal = m_nAmmoTotal;
+		pWeapon->m_nTimer = m_nTimer;
+		pWeapon->m_bAddRotOffset = m_bAddRotOffset;
+	}
+};
+
+static_assert(WEAPONTYPE_TOTAL_INVENTORY_WEAPONS == 13,
+	"Saving struct needs to be changed by adding new weapons to existing space; or COMPATIBLE_SAVES needs to be undefined");
+
+struct CPlayerPed_FS
+{
+	int32 vtable;
+	int8 gap[48];
+	float pos[3];
+	uint8 gap_2[288];
+	uint8 CharCreatedBy;
+	uint8 gap_3[351];
+	float m_fHealth;
+	float m_fArmour;
+	uint8 gap_4[148];
+
+	CWeapon_FS m_weapons[13];
+	int32 m_storedWeapon;
+	uint8 m_currentWeapon;
+	uint8 m_maxWeaponTypeAllowed;
+	uint8 gap_5[178];
+	float m_fMaxStamina;
+	uint8 gap_6[28];
+	int32 m_nTargettableObjects[4];
+	uint8 gap_7[116];
+
+	void StorePlayerPed(CPlayerPed* pPlayerPed)
+	{
+		for (int i = 0; i < 4; i++)
+			m_nTargettableObjects[i] = pPlayerPed->m_nTargettableObjects[i];
+		m_fMaxStamina = pPlayerPed->m_fMaxStamina;
+	}
+
+	void StorePed(CPed* pPed)
+	{
+		pos[0] = pPed->GetPosition().x;
+		pos[1] = pPed->GetPosition().y;
+		pos[2] = pPed->GetPosition().z;
+		m_fHealth = pPed->m_fHealth;
+		m_fArmour = pPed->m_fArmour;
+		CharCreatedBy = pPed->CharCreatedBy;
+		m_maxWeaponTypeAllowed = pPed->m_maxWeaponTypeAllowed;
+		for (int i = 0; i < 13; i++)
+			m_weapons[i].Store(&pPed->m_weapons[i]);
+	}
+
+	void RestorePlayerPed(CPlayerPed* pPlayerPed)
+	{
+		for (int i = 0; i < 4; i++)
+			pPlayerPed->m_nTargettableObjects[i] = m_nTargettableObjects[i];
+		pPlayerPed->m_fMaxStamina = m_fMaxStamina;
+	}
+
+	void RestorePed(CPed* pPed)
+	{
+		pPed->GetPosition().x = pos[0];
+		pPed->GetPosition().y = pos[1];
+		pPed->GetPosition().z = pos[2];
+		pPed->m_fHealth = m_fHealth;
+		pPed->m_fArmour = m_fArmour;
+		pPed->CharCreatedBy = CharCreatedBy;
+		pPed->m_maxWeaponTypeAllowed = m_maxWeaponTypeAllowed;
+		for (int i = 0; i < 13; i++)
+			 m_weapons[i].Restore(&pPed->m_weapons[i]);
+	}
+};
+
+VALIDATE_SIZE(CPlayerPed_FS, 1520);
+
+#endif
diff --git a/src/core/config.h b/src/core/config.h
index a6876ab0..f1999c71 100644
--- a/src/core/config.h
+++ b/src/core/config.h
@@ -223,6 +223,8 @@ enum Config {
 #define USE_MEASUREMENTS_IN_METERS // makes game use meters instead of feet in script
 #define USE_PRECISE_MEASUREMENT_CONVERTION // makes game convert feet to meeters more precisely
 
+#define COMPATIBLE_SAVES // this allows changing structs while keeping saves compatible
+
 // Replay
 //#define DONT_FIX_REPLAY_BUGS // keeps various bugs in CReplay, some of which are fairly cool!
 //#define USE_BETA_REPLAY_MODE // adds another replay mode, a few seconds slomo (caution: buggy!)