Function FixOldVehicles

src/saveload/oldloader_sl.cpp:160–208

* Convert the old style vehicles into something that resembles * the old new style savegames. Then #AfterLoadGame can handle * the rest of the conversion. */

 * the rest of the conversion.
 */
void FixOldVehicles(LoadgameState &ls)
{
	for (Vehicle *v : Vehicle::Iterate()) {
		if ((size_t)v->next == 0xFFFF) {
			v->next = nullptr;
		} else {
			v->next = Vehicle::GetIfValid((size_t)v->next);
		}

		/* For some reason we need to correct for this */
		switch (v->spritenum) {
			case 0xfd: break;
			case 0xff: v->spritenum = 0xfe; break;
			default:   v->spritenum >>= 1; break;
		}

		/* Vehicle-subtype is different in TTD(Patch) */
		if (v->type == VEH_EFFECT) v->subtype = v->subtype >> 1;

		v->name = CopyFromOldName(ls.vehicle_names[v->index.base()]);

		/* We haven't used this bit for stations for ages */
		if (v->type == VEH_ROAD) {
			RoadVehicle *rv = RoadVehicle::From(v);
			if (rv->state != RVSB_IN_DEPOT && rv->state != RVSB_WORMHOLE) {
				ClrBit(rv->state, 2);
				Tile tile(rv->tile);
				if (IsTileType(tile, MP_STATION) && tile.m5() >= 168) {
					/* Update the vehicle's road state to show we're in a drive through road stop. */
					SetBit(rv->state, RVS_IN_DT_ROAD_STOP);
				}
			}
		}

		/* The subtype should be 0, but it sometimes isn't :( */
		if (v->type == VEH_ROAD || v->type == VEH_SHIP) v->subtype = 0;

		/* Sometimes primary vehicles would have a nothing (invalid) order
		 * or vehicles that could not have an order would still have a
		 * (loading) order which causes assertions and the like later on.
		 */
		if (!IsCompanyBuildableVehicleType(v) ||
				(v->IsPrimaryVehicle() && v->current_order.IsType(OT_NOTHING))) {
			v->current_order.MakeDummy();
		}

		/* Shared orders are fixed in AfterLoadVehicles now */
	}
}

static bool FixTTOMapArray()
{