public override void Turn(NuclearReactor reactor)
{
if (reactor.Temperature > 100)
{
reactor.Temperature -= 10;
}
}
static void printAlarm(NuclearReactor r)
{
Console.WriteLine(r.Temperature);
}
static void Main(string[] args)
{
/*
* Scenario:
* A NuclearReactor can split atoms, but everytime it splits them,
* its temperature increases by one degree.
* We want to make sure that the temperature never goes above 100 degrees.
* The NuclearReactor does not know how to decrease its temperature,
* but it has an alarm that goes on everytime its temperature increases.
*
* We want a Pump to react to the alarm, so that the temperature can get lower.
*
******************************************************************
*
* A Reactor has a Split() method.
* A Reactor has an int Temperature property.
* Splitting atoms causes the temperature to increase.
* When the temperature changes an event is raised.
*
* In the handler the current temperature must be available.
*
* Create a delegate that uses a parameter of type NuclearReactor.
*
* There are two types of Pump that can react to the event that the reactor raises:
* a PneumaticPump and a HydraulicPump.
*
* A Pump has a Turn method with a NuclearReactor parameter.
* The PneumaticPump will reduce the temperature by one degree if the temperature is higher than 100 degrees.
* The HydraulicPump will reduce the temperature by ten degrees if the temperature is higher than 100 degrees.
*
* Create a Main method in which an instance of a NuclearReactor is created
* and instances of both types of pumps are created.
* Assign the Turn of the pumps as listeners to the NuclearReactor Alarm event.
*
* Create a third listener in your Program class,
* that writes on the console everytime the temperature changes.
*
* Register the listener on the Alarm event.
*
* Split atoms 300 times.
*
*/
NuclearReactor reactor = new NuclearReactor();
PneumaticPump pp = new PneumaticPump();
HydraulicPump hp = new HydraulicPump();
// Assign the Turn of the pumps as listeners
// to the NuclearReactor Alarm event.
reactor.Alarm += hp.Turn;
reactor.Alarm += pp.Turn;
reactor.TemperatureChanged += printAlarm;
for (int i = 0; i < 300; i++)
{
reactor.Split();
}
Console.ReadLine();
}
public abstract void Turn(NuclearReactor reactor);