(svn r14747) -Codechange: remove DeleteVehicleChain in favour of the vehicle destructor as that was already doing the same for a few vehicle types.

src/aircraft_cmd.cpp

@@ -465,7 +465,7 @@ static void DoDeleteAircraft(Vehicle *v)
 	DeleteWindowById(WC_VEHICLE_VIEW, v->index);
 	InvalidateWindow(WC_COMPANY, v->owner);
 	DeleteDepotHighlightOfVehicle(v);
-	DeleteVehicleChain(v);
+	delete v;
 	InvalidateWindowClassesData(WC_AIRCRAFT_LIST, 0);
 }
 

src/disaster_cmd.cpp

@@ -148,7 +148,7 @@ static void InitializeDisasterVehicle(Vehicle *v, int x, int y, byte z, Directio
 
 static void DeleteDisasterVeh(Vehicle *v)
 {
-	DeleteVehicleChain(v);
+	delete v;
 }
 
 static void SetDisasterVehiclePos(Vehicle *v, int x, int y, byte z)

src/economy.cpp

@@ -383,35 +383,13 @@ void ChangeOwnershipOfCompanyItems(Owner old_owner, Owner new_owner)
 		}
 
 		FOR_ALL_VEHICLES(v) {
-			if (v->owner == old_owner && IsInsideMM(v->type, VEH_TRAIN, VEH_AIRCRAFT + 1)) {
+			if (v->owner == old_owner && IsCompanyBuildableVehicleType(v->type)) {
 				if (new_owner == INVALID_OWNER) {
 					DeleteWindowById(WC_VEHICLE_VIEW, v->index);
 					DeleteWindowById(WC_VEHICLE_DETAILS, v->index);
 					DeleteWindowById(WC_VEHICLE_ORDERS, v->index);
 
-					if (v->IsPrimaryVehicle() || (v->type == VEH_TRAIN && IsFreeWagon(v))) {
-						switch (v->type) {
-							default: NOT_REACHED();
-
-							case VEH_TRAIN: {
-								Vehicle *u = v;
-								do {
-									Vehicle *next = GetNextVehicle(u);
-									delete u;
-									u = next;
-								} while (u != NULL);
-							} break;
-
-							case VEH_ROAD:
-							case VEH_SHIP:
-								delete v;
-								break;
-
-							case VEH_AIRCRAFT:
-								DeleteVehicleChain(v);
-								break;
-						}
-					}
+					if (v->Previous() == NULL) delete v;
 				} else {
 					v->owner = new_owner;
 					v->colormap = PAL_NONE;

src/train_cmd.cpp

@@ -938,6 +938,7 @@ static Vehicle *UnlinkWagon(Vehicle *v, Vehicle *first)
 		if (v == NULL) return NULL;
 
 		if (IsTrainWagon(v)) SetFreeWagon(v);
+		first->SetNext(NULL);
 
 		return v;
 	}
@@ -4392,7 +4393,7 @@ void Train::Tick()
 			TrainLocoHandler(this, true);
 	} else if (IsFreeWagon(this) && HASBITS(this->vehstatus, VS_CRASHED)) {
 		/* Delete flooded standalone wagon chain */
-		if (++this->u.rail.crash_anim_pos >= 4400) DeleteVehicleChain(this);
+		if (++this->u.rail.crash_anim_pos >= 4400) delete this;
 	}
 }
 

src/vehicle.cpp

@@ -671,13 +671,6 @@ void Vehicle::PreDestructor()
 	this->cargo.Truncate(0);
 	DeleteVehicleOrders(this);
 
-	/* Now remove any artic part. This will trigger an other
-	 *  destroy vehicle, which on his turn can remove any
-	 *  other artic parts. */
-	if ((this->type == VEH_TRAIN && EngineHasArticPart(this)) || (this->type == VEH_ROAD && RoadVehHasArticPart(this))) {
-		delete this->Next();
-	}
-
 	extern void StopGlobalFollowVehicle(const Vehicle *v);
 	StopGlobalFollowVehicle(this);
 }
@@ -688,7 +681,15 @@ Vehicle::~Vehicle()
 
 	if (CleaningPool()) return;
 
+	/* sometimes, eg. for disaster vehicles, when company bankrupts, when removing crashed/flooded vehicles,
+	 * it may happen that vehicle chain is deleted when visible */
+	if (!(this->vehstatus & VS_HIDDEN)) MarkSingleVehicleDirty(this);
+
+	Vehicle *v = this->Next();
 	this->SetNext(NULL);
+
+	delete v;
+
 	UpdateVehiclePosHash(this, INVALID_COORD, 0);
 	this->next_hash = NULL;
 	this->next_new_hash = NULL;
@@ -698,24 +699,6 @@ Vehicle::~Vehicle()
 	new (this) InvalidVehicle();
 }
 
-/**
- * Deletes all vehicles in a chain.
- * @param v The first vehicle in the chain.
- */
-void DeleteVehicleChain(Vehicle *v)
-{
-	assert(v->First() == v);
-
-	do {
-		Vehicle *u = v;
-		/* sometimes, eg. for disaster vehicles, when company bankrupts, when removing crashed/flooded vehicles,
-		 * it may happen that vehicle chain is deleted when visible */
-		if (!(v->vehstatus & VS_HIDDEN)) MarkSingleVehicleDirty(v);
-		v = v->Next();
-		delete u;
-	} while (v != NULL);
-}
-
 /**
  * List of vehicles that should check for autoreplace this tick.
  * Mapping of vehicle -> leave depot immediatelly after autoreplace.

src/vehicle_func.h

@@ -27,7 +27,6 @@ Vehicle *GetLastVehicleInChain(Vehicle *v);
 const Vehicle *GetLastVehicleInChain(const Vehicle *v);
 uint CountVehiclesInChain(const Vehicle *v);
 bool IsEngineCountable(const Vehicle *v);
-void DeleteVehicleChain(Vehicle *v);
 void FindVehicleOnPos(TileIndex tile, void *data, VehicleFromPosProc *proc);
 void FindVehicleOnPosXY(int x, int y, void *data, VehicleFromPosProc *proc);
 bool HasVehicleOnPos(TileIndex tile, void *data, VehicleFromPosProc *proc);