public override Route NextClaim(Game current)
{
//focus on unmet destinations then any big route
foreach (var destination in Destinations.Concat(new[] { DestinationCard.DestinationCardNull }))
{
IOrderedEnumerable <Route> routes;
if (destination == DestinationCard.DestinationCardNull)
{
routes = current.Board.AvailableRoutes().OrderByDescending(r => r.Tag.Length);
}
else
{
if (current.Board.IsMet(destination, this))
{
continue;
}
routes = current.Board.ShortestRoute(destination, this)
.Where(r => r.Tag.Owner == null)
.OrderByDescending(r => r.Tag.Length);
}
if (!routes.Any())
{
continue;
}
foreach (var route in routes)
{
var resources = Tickets.Count(t => t.Color == Color.Any || t.Color == route.Tag.Color);
resources = resources < Trains ? resources : Trains;
if (route.Tag.Length <= resources)
{
return(route);
}
}
}
//there are no available claims
throw new ArgumentException("Stupid me, there was nothing I could claim!");
}