public string AddRoad(int c1, int c2, int d)
{
Road road = new Road();
road.City1 = c1;
road.City2 = c2;
road.Distance = d;
var sp1 = _CitiesList.CityRoads(road.City1);
var sp2 = _CitiesList.CityRoads(road.City2);
var rl1 = new RoadsList(_RoadsFile, road.City1, sp1);
var rl2 = new RoadsList(_RoadsFile, road.City2, sp2);
var p1 = rl1.AddRoad(road.City2, road.Distance, out sp1);
rl2.UpdateLastRoadLink(p1);
_CitiesList.UpdateRoadListPointer(road.City1, sp1);
_CitiesList.UpdateRoadListPointer(road.City2, sp2 == RoadsList.EndOfList ? p1 : sp2);
return("Road was successfuly added!\n");
}
public string DeleteRoad(int c1, int c2)
{
Road road = new Road();
road.City1 = c1;
road.City2 = c2;
int offset1 = _CitiesList.CityRoads(road.City1);
int offset2 = _CitiesList.CityRoads(road.City2);
RoadsList rl1 = new RoadsList(_RoadsFile, road.City1, offset1);
RoadsList rl2 = new RoadsList(_RoadsFile, road.City2, offset2);
if (rl1.Delete(road.City2, out offset1) && rl2.Delete(road.City1, out offset2))
{
_CitiesList.UpdateRoadListPointer(road.City1, offset1);
_CitiesList.UpdateRoadListPointer(road.City2, offset2);
return("Road Deleted!\n");
}
return(":(\n");
}