static void Main(string[] args)
{
//receivers
Observatory observatory = new Observatory("Kyiv");
Observatory observatory2 = new Observatory("London");
Observatory observatory3 = new Observatory("Munich");
//command
ICommand command = new ObserveCommand(observatory);
//invoker
ObserverCentre centre = new ObserverCentre(command);
centre.StartWatching();
//change executor
Console.WriteLine("Changing executor...");
centre.Observatory = observatory2;
centre.StartWatching();
Console.WriteLine("Changing executor once again...");
centre.Observatory = observatory3;
centre.StartWatching();
}
public void Execute()
{
Observatory.WatchStar();
}
public ObserveCommand(Observatory observatory)
{
Observatory = observatory;
}
