/// <summary>stop current drone, no more move allowed</summary>
private void Stop()
{
Write.Trace($"drone {this.Id} stop");
this.CurrentState = State.Stopped;
this.moves.Add((int)Drone.Direction.Stay);
}
/// <summary>start delivery process</summary>
public void Start()
{
foreach (Drone drone in this.Drones)
{
drone.Start();
}
Write.Trace($"total round : {this.MaxRound}");
while (this.Round < this.MaxRound)
{
foreach (Drone drone in this.Drones)
{
drone.NextMove();
}
this.Round++;
Write.Trace($"current round : {this.Round}");
}
// if a drone has moved until last round, it may stick to shipping state
foreach (Drone drone in from i in this.Drones where i.CurrentState == Drone.State.Shipping select i)
{
drone.CurrentState = Drone.State.Stopped;
}
}
private RouteCell NextDirection(Route route, Route.Specs routeSpecs)
{
List <RouteCell> availableDirections = this.AvailableDirections(route);
// flatten collection to iterate while removing item
IEnumerable <RouteCell> returnList = availableDirections.ToList();
foreach (RouteCell cell in returnList)
{
if (cell.Row == this.ReachCell.Row && cell.Column == this.ReachCell.Column)
{
// return reach cell only if available
Write.Trace($"reach cell is available direction : {cell}");
return(cell);
}
if (routeSpecs.HasFlag(Route.Specs.Opposite) && (cell.Direction != this.Directions.VerticalDirection && cell.Direction != this.Directions.HorizontalOpposite))
{
availableDirections.Remove(cell);
}
else if (!routeSpecs.HasFlag(Route.Specs.Opposite) && cell.Direction != this.Directions.VerticalDirection && cell.Direction != this.Directions.HorizontalDirection)
{
availableDirections.Remove(cell);
}
}
return(this.FilterAvailableDirections(availableDirections, route, routeSpecs));
}
/// <summary>Set willing packets state to assigned</summary>
public void AssignWilling()
{
Write.Trace($"Assign route packets : ", this.packets);
foreach (Packet packet in this.packets.Where(x => x.CurrentState == Packet.State.Willing))
{
packet.CurrentState = Packet.State.Assigned;
}
}
/// <summary>define a route for this drone, add route packet</summary>
/// <param name="route">route to set</param>
public void SetRoute(Route route)
{
Write.Trace($"set route to drone {this.Id} : {route}");
if (route != null)
{
this.Route = route;
this.RouteCells = this.Route.Cells.GetEnumerator();
this.CurrentState = State.Ready;
}
}
private Route GetRoute(IEnumerable <Route.Specs> routesSpecs)
{
foreach (Route.Specs currentRouteSpecs in routesSpecs)
{
Route route = new Route(this.StartCell);
Route.Specs routeSpecs = currentRouteSpecs;
Write.Trace($"map {routeSpecs} route, from {this.StartCell} to {this.ReachCell}");
while ((route.ReachCell.Row != this.ReachCell.Row || route.ReachCell.Column != this.ReachCell.Column) && route != null)
{
RouteCell nextDirection = this.NextDirection(route, routeSpecs);
if (nextDirection != null)
{
RouteCell nextDirectionCell = nextDirection;
route.AddCell(nextDirectionCell, this.Grid);
if (route.PacketsCount == route.MaxPackets && routeSpecs.HasFlag(Route.Specs.Route))
{
routeSpecs &= ~Route.Specs.Route;
routeSpecs |= Route.Specs.Free;
}
else if (route.PacketsCount > route.MaxPackets)
{
Write.Trace($"break : route.PacketsCount > route.MaxPackets {route}");
route.Reset();
route = null;
break;
}
}
else
{
Write.Trace($"break : next direction = null {route}");
route.Reset();
route = null;
break;
}
}
if (route != null)
{
return(route);
}
}
return(null);
}
/// <summary>Set all route packets state back to pending</summary>
/// <returns>always return null</returns>
public Route Reset()
{
Write.Trace($"Reset route packets : ", this.packets);
foreach (Packet packet in this.packets)
{
packet.CurrentState = Packet.State.Pending;
packet.Distance = 0;
}
return(null);
}
/// <summary>Set willing packets state back to pending</summary>
/// <returns>always return null</returns>
public Route ResetWilling()
{
Write.Trace($"Reset route willing packets : ", this.packets);
foreach (Packet packet in this.packets.Where(x => x.CurrentState == Packet.State.Willing))
{
packet.CurrentState = Packet.State.Pending;
packet.Distance = 0;
}
return(null);
}
/// <summary>Initializes a new instance of the <see cref="Route"/> class.</summary>
/// <param name="startCell">route start cell</param>
public Route(Cell startCell)
{
this.StartCell = startCell;
this.ReachCell = startCell;
this.cells = new List <RouteCell>();
this.packets = new List <Packet>();
this.Distance = 0;
this.MaxPackets = Drone.MaxPacketsToReachDistance(this.Distance);
Write.Trace($"new Route {this}");
}
/// <summary>Move drone on the grid</summary>
/// <param name="destination">move direction, up, down, left, right</param>
private void Move(RouteCell destination)
{
Write.Trace($"moving drone {this.Id} to {destination}");
this.Position = new Cell(destination.Row, destination.Column);
if (this.grid.SetPacketState(this.Position, Packet.State.Delivered))
{
Write.Trace($"{this.Position} packet delivered");
}
this.moves.Add((int)destination.Direction);
}
/// <summary>add a wait move to route</summary>
public void AddWait()
{
Write.Trace($"adding a wait cell");
this.cells.Insert(0, RouteCell.WaitCell(this.StartCell));
foreach (Packet packet in this.Packets)
{
packet.Distance++;
}
Write.Trace($"{this}");
}
/// <summary>remove last cell of route cells list</summary>
public void RemoveLastCell()
{
RouteCell cell = this.cells.Last();
Write.Trace($"Removing cell : {cell}");
this.cells.Remove(cell);
cell = this.cells.Last();
this.ReachCell = new Cell(cell.Row, cell.Column);
this.Distance--;
this.MaxPackets = Drone.MaxPacketsToReachDistance(this.Distance);
}
/// <summary>Initializes a new instance of the <see cref="Delivery"/> class.</summary>
/// <param name="deliveryGrid">delivery grid</param>
/// <param name="deliveryDrones">drones collection</param>
/// <param name="deliveryRounds">Number of round</param>
/// <param name="deliveryPacketsNumber">Number of packets</param>
/// <param name="deliveryMaxDistance">Maximun number of move for a drone</param>
/// <param name="dronesMaxPackets">maximum numbers of packets a drone can hold</param>
/// <param name="ratioAutonomy">dynamic number representing autonomy ratio between grid size</param>
public Delivery(Grid deliveryGrid, IEnumerable <Drone> deliveryDrones, int deliveryRounds, int deliveryPacketsNumber, int deliveryMaxDistance, int dronesMaxPackets, int ratioAutonomy)
{
this.Drones = deliveryDrones;
this.Grid = deliveryGrid;
this.MaxRound = deliveryRounds;
Delivery.autonomyRatio = ratioAutonomy;
Delivery.maxDistance = deliveryMaxDistance;
Drone.MaxPackets = dronesMaxPackets;
this.Round = 0;
this.PacketsNumber = deliveryPacketsNumber;
Write.Trace($"new Delivery : {this}");
}
/// <summary>start current drone</summary>
public void Start()
{
Write.Trace($"drone {this.Id} start");
this.Round = 0;
this.moves = new List <int>();
if (this.Route != null)
{
this.moves.Add(this.Route.PacketsCount);
this.CurrentState = State.Shipping;
}
else
{
this.moves.Add((int)Drone.Direction.Stay);
}
}
/// <summary>perform next move from routeCells move list</summary>
public void NextMove()
{
this.Round++;
if (this.CurrentState == State.Shipping)
{
if (this.RouteCells.MoveNext())
{
this.Move(this.RouteCells.Current);
}
else
{
this.Stop();
}
}
else
{
Write.Trace($"drone {this.Id} stay in {this.Position}");
this.moves.Add((int)Drone.Direction.Stay);
}
}
/// <summary>Merge a route with this route</summary>
/// <param name="route">route to merge</param>
public void AddRoute(Route route)
{
if (route != null)
{
Write.Trace($"merging route : {route}");
foreach (Packet packet in route.packets)
{
packet.Distance += this.Distance;
}
IEnumerable <RouteCell> stayCells = route.cells.Where(x => x.Direction == Drone.Direction.Stay);
if (stayCells.Any())
{
this.cells.AddRange(route.Cells.Except(stayCells));
this.cells.InsertRange(0, stayCells);
foreach (Packet packet in this.packets)
{
packet.Distance += stayCells.Count();
}
}
else
{
this.cells.AddRange(route.Cells);
}
this.ReachCell = route.ReachCell;
this.Distance += route.Distance;
this.packets.AddRange(route.packets);
this.MaxPackets = Drone.MaxPacketsToReachDistance(this.Distance);
Write.Trace($"route merged : {this}");
}
}
/// <summary>send string to console output, using invariant culture</summary>
/// <param name="formattable">initial string as formattable</param>
public static void Print(FormattableString formattable)
{
Console.WriteLine(Write.Invariant(formattable));
Write.Trace(formattable);
}
// Ooii
private RouteCell DodgeCell(RouteCell packetCell, IEnumerable <RouteCell> nextDirections, ref Route route, Route.Specs routeSpecs)
{
Packet packet = this.Grid.GetPacket(packetCell);
IEnumerable <RouteCell> alternativeCells = from i in this.AvailableDirections(route) where !nextDirections.Where(x => x.Row != i.Row && x.Column != i.Column).Any() select i;
Write.Trace($"packet {packet} route.Distance + 1 {route.Distance + 1} - packet.Distance {packet.Distance}) > 2");
if (packet.Distance - (route.Distance + 1) > 2)
{
route.AddCell(packetCell, this.Grid);
RouteCell routeCell = this.NextDirection(route, Route.Specs.All);
RouteCell otherRouteCell = this.NextDirection(route, Route.Specs.All | Route.Specs.Alternative);
route.RemoveLastCell();
List <Path> paths = new List <Path>();
if (routeCell != null)
{
paths.Add(new Path(routeCell, this.Grid, alternativeCells.ElementAt(0)));
paths.Add(new Path(routeCell, this.Grid, alternativeCells.ElementAt(1)));
}
if (otherRouteCell != null)
{
paths.Add(new Path(otherRouteCell, this.Grid, alternativeCells.ElementAt(0)));
paths.Add(new Path(otherRouteCell, this.Grid, alternativeCells.ElementAt(1)));
}
if (paths.Any())
{
List <Route> routes = new List <Route>();
foreach (Path path in paths)
{
Route newRoute = path.MapRoute(new List <Route.Specs>()
{
Route.Specs.All, Route.Specs.All | Route.Specs.Alternative
});
if (newRoute != null)
{
routes.Add(newRoute);
}
}
Route selectedRoute = (from i in routes orderby i.Distance select i).FirstOrDefault();
if (selectedRoute != null)
{
route.AddRoute(selectedRoute);
return(this.NextDirection(route, routeSpecs));
}
else
{
return(null);
}
}
else
{
return(null);
}
}
else
{
// insert a wait step on route start
return(RouteCell.WaitCell(this.StartCell));
}
}
/// <summary>Gets first route corresponding to routeSpecs list</summary>
/// <param name="routesSpecs">route specifications list</param>
/// <returns>Route corresponding to specs</returns>
public Route MapBubbleRoute(IEnumerable <Route.Specs> routesSpecs)
{
Write.Trace($"map Bubble route, from {this.StartCell} to {this.ReachCell}");
Route route = new Route(this.StartCell);
// if startcell != reachCell first go to reach cell before starting bubbling
if (this.StartCell.Row != this.ReachCell.Row || this.StartCell.Column != this.ReachCell.Column)
{
Path firstPath = new Path(this.ReachCell, this.Grid, this.StartCell);
route = firstPath.GetRoute(routesSpecs);
route?.AssignWilling();
}
while (route != null && route.PacketsCount < Drone.MaxPackets && this.Grid.PendingPacketsNumber > 0)
{
Path nextPath = this.ClosestPendingPath(route.ReachCell);
if (nextPath != null)
{
this.ReachCell = nextPath.ReachCell;
Route nextRoute = nextPath.GetRoute(routesSpecs);
if (nextRoute != null)
{
int nextDistance = route.Distance + nextRoute.Distance;
int nextPacketCount = route.PacketsCount + nextRoute.PacketsCount;
if (nextDistance <= Delivery.Autonomy(nextPacketCount) && nextPacketCount <= Drone.MaxPackets)
{
nextRoute.AssignWilling();
route.AddRoute(nextRoute);
}
else
{
Write.Trace($"break : nextDistance:{nextDistance} > Autonomy:{Delivery.Autonomy(nextPacketCount)} || nextPacketCount:{nextPacketCount} > MaxPackets:{Drone.MaxPackets}");
nextRoute.ResetWilling();
break;
}
}
else
{
Write.Trace($"break : route = null");
break;
}
}
}
if (route != null && route.PacketsCount > 0)
{
return(route);
}
else
{
return(null);
}
}