private void ValidateThatTeleportationServiceIsApplicable(IUnit unitToTeleport, ILocation targetLocation, out IPath pathToTheTargetPlanet)
{
if (unitToTeleport.IsNull())
{
throw new ArgumentNullException("unitToTeleport");
}
if (targetLocation.IsNull())
{
throw new ArgumentNullException("destination");
}
if (!this.LocationsMatch(this.LocationOfStation, unitToTeleport.CurrentLocation))
{
throw new TeleportOutOfRangeException("unitToTeleport.CurrentLocation");
}
var pathsToTheTargetGalaxy = this.GalacticMapOfStation
.Where(path => path.TargetLocation.Planet.Galaxy.Name == targetLocation.Planet.Galaxy.Name)
.ToList();
if (pathsToTheTargetGalaxy.IsNullOrEmpty())
{
throw new LocationNotFoundException("A path to a Galaxy with the provided name cannot be found in the TeleportStation's galactic map.");
}
pathToTheTargetPlanet = pathsToTheTargetGalaxy.FirstOrDefault(path => path.TargetLocation.Planet.Name == targetLocation.Planet.Name);
if (pathToTheTargetPlanet.IsNull())
{
throw new LocationNotFoundException("A path to a Planet with the provided name cannot be found in the TeleportStation's galactic map.");
}
foreach (var unitInCity in pathToTheTargetPlanet.TargetLocation.Planet.Units)
{
if (this.LocationsAndCoordinatesMatch(targetLocation, unitInCity.CurrentLocation))
{
throw new InvalidTeleportationLocationException("There is already a unit placed on the desired location. Cannot activate the teleportation service because the units will overlap.");
}
}
if (!unitToTeleport.CanPay(pathToTheTargetPlanet.Cost))
{
throw new InsufficientResourcesException("The unit cannot be teleported, because THERE AIN'T NO SUCH THING AS A FREE LUNCH.");
}
}
private void ValidateThatTeleportationServiceIsApplicable(IUnit unitToTeleport, ILocation targetLocation, out IPath pathToTheTargetPlanet)
{
if (unitToTeleport.IsNull())
{
throw new ArgumentNullException("unitToTeleport");
}
if (targetLocation.IsNull())
{
throw new ArgumentNullException("destination");
}
if (!this.LocationsMatch(this.location, unitToTeleport.CurrentLocation))
{
throw new TeleportOutOfRangeException("unitToTeleport.CurrentLocation");
}
var pathsToTheTargetGalaxy = galacticMap
.Where(path => path.TargetLocation.Planet.Galaxy.Name == targetLocation.Planet.Galaxy.Name)
.ToList();
if (pathsToTheTargetGalaxy.IsNullOrEmpty())
{
throw new LocationNotFoundException("A path to a Galaxy with the provided name cannot be found in the TeleportStation's galactic map.");
}
pathToTheTargetPlanet = pathsToTheTargetGalaxy.FirstOrDefault(path => path.TargetLocation.Planet.Name == targetLocation.Planet.Name);
if (pathToTheTargetPlanet.IsNull())
{
throw new LocationNotFoundException("A path to a Planet with the provided name cannot be found in the TeleportStation's galactic map.");
}
foreach (var unitInCity in pathToTheTargetPlanet.TargetLocation.Planet.Units)
{
if (this.LocationsAndCoordinatesMatch(targetLocation, unitInCity.CurrentLocation))
{
throw new InvalidTeleportationLocationException("There is already a unit placed on the desired location. Cannot activate the teleportation service because the units will overlap.");
}
}
if (!unitToTeleport.CanPay(pathToTheTargetPlanet.Cost))
{
throw new InsufficientResourcesException("The unit cannot be teleported, because THERE AIN'T NO SUCH THING AS A FREE LUNCH.");
}
}