/// <summary>
/// Copy (initializing) constructor.
/// </summary>
/// <param name="existing"></param>
public Mappable(Mappable existing) :
base(existing)
{
if (existing == null)
{
return;
}
// Use a new object, no just a reference to the copy's NovaPoint
Position = new NovaPoint(existing.Position);
}
/// <summary>
/// Fleet construction based on a ShipToken and some parameters from a star (this is
/// the usual case for most fleets when a new ship is manufactured at a star).
/// </summary>
/// <param name="ship">The ShipToken being constructed.</param>
/// <param name="star">The star constructing the ship.</param>
public Fleet(ShipToken token, Star star, long newKey)
{
tokens.Add(token.Key, token);
FuelAvailable = TotalFuelCapacity;
Type = ItemType.Fleet;
// Have one waypoint to reflect the fleet's current position and the
// planet it is in orbit around.
Waypoint w = new Waypoint();
w.Position = star.Position;
w.Destination = star.Name;
w.WarpFactor = 0;
Waypoints.Add(w);
// Inititialise the fleet elements that come from the star.
Position = star.Position;
InOrbit = star;
Key = newKey;
}
/// <summary>
/// Load: initializing constructor to load a fleet from an XmlNode (save file).
/// </summary>
/// <param name="node">An XmlNode representing the fleet.</param>
public Fleet(XmlNode node)
: base(node)
{
// Read the node
XmlNode mainNode = node.FirstChild;
try
{
while (mainNode != null)
{
switch (mainNode.Name.ToLower())
{
case "fleetid":
Id = uint.Parse(mainNode.FirstChild.Value, System.Globalization.CultureInfo.InvariantCulture);
break;
case "cargo":
Cargo = new Cargo(mainNode);
break;
case "inorbit":
InOrbit = new Star();
InOrbit.Name = mainNode.FirstChild.Value;
break;
case "bearing":
Bearing = double.Parse(mainNode.FirstChild.Value, System.Globalization.CultureInfo.InvariantCulture);
break;
case "cloaked":
Cloaked = double.Parse(mainNode.FirstChild.Value, System.Globalization.CultureInfo.InvariantCulture);
break;
case "fuelavailable":
FuelAvailable = double.Parse(mainNode.FirstChild.Value, System.Globalization.CultureInfo.InvariantCulture);
break;
case "targetdistance":
TargetDistance = double.Parse(mainNode.FirstChild.Value, System.Globalization.CultureInfo.InvariantCulture);
break;
case "battleplan":
BattlePlan = mainNode.FirstChild.Value;
break;
case "tokens":
XmlNode subNode = mainNode.FirstChild;
ShipToken token;
while (subNode != null)
{
token = new ShipToken(subNode);
tokens.Add(token.Key, token);
subNode = subNode.NextSibling;
}
break;
case "waypoint":
Waypoint waypoint = new Waypoint(mainNode);
Waypoints.Add(waypoint);
break;
default: break;
}
mainNode = mainNode.NextSibling;
}
}
catch (Exception e)
{
Report.Error("Error loading fleet:" + Environment.NewLine + e.Message);
throw e;
}
}
/// <summary>
/// Move the fleet towards the waypoint at the top of the list. Fuel is consumed
/// at the rate of the sum of each of the individual ships (i.e. available fuel
/// is automatically "pooled" between the ships).
/// </summary>
/// <param name="availableTime">The portion of a year left for travel.</param>
/// <param name="race">The race this fleet belongs to.</param>
/// <returns>A TravelStatus indicating arrival or in-transit.</returns>
public TravelStatus Move(ref double availableTime, Race race)
{
if (GetTravelStatus() == TravelStatus.Arrived)
{
return(TravelStatus.Arrived);
}
Waypoint target = Waypoints[0];
InOrbit = null;
double legDistance = PointUtilities.Distance(Position, target.Position);
int warpFactor = target.WarpFactor;
int speed = warpFactor * warpFactor;
double targetTime = legDistance / speed;
double fuelConsumptionRate = FuelConsumption(warpFactor, race);
double fuelTime = FuelAvailable / fuelConsumptionRate;
double travelTime = targetTime;
// Determine just how long we have available to travel towards the
// waypoint target. This will be the smaller of target time (the ideal
// case, we get there) available time (didn't get there but still can
// move towards there next turn) and fuel time.
TravelStatus arrived = TravelStatus.Arrived;
if (travelTime > availableTime)
{
travelTime = availableTime;
arrived = TravelStatus.InTransit;
}
if (travelTime >= fuelTime)
{
travelTime = fuelTime;
arrived = TravelStatus.InTransit;
}
// If we have arrived then the new fleet position is the waypoint
// target. Otherwise the position is determined by how far we got
// in the time or fuel available.
if (arrived == TravelStatus.Arrived)
{
Position = target.Position;
target.WarpFactor = 0;
}
else
{
double travelled = speed * travelTime;
Position = PointUtilities.MoveTo(Position, target.Position, travelled);
}
// Update the travel time left for this year and the total fuel we
// now have available.
availableTime -= travelTime;
int fuelUsed = (int)(fuelConsumptionRate * travelTime);
FuelAvailable -= fuelUsed;
// Added check if fleet run out of full it's speed will be changed
// to free warp speed.
if (arrived == TravelStatus.InTransit && fuelConsumptionRate > this.FuelAvailable)
{
target.WarpFactor = this.FreeWarpSpeed;
}
return(arrived);
}
