private static void CovarianceTest()
{
//covariance allows you to use a derived class where a base class is expected (rule: can accept big if small is expected).
Small s1 = new Small();
Small s2 = new Big();
Small s3 = new Bigger();
Big b1 = new Big();
Big b2 = new Bigger();
//Big b3 = new Small();
}
public static void Execute()
{
Small sm1 = new Small();
Small sm2 = new Big();
Small sm3 = new Bigger();
Big big1 = new Big();
Big big2 = new Bigger();
//IMyInterface2 imyint1 = new Bigger();
//Huge h1 = new Big();
//Big big3 = new Huge();
//Big big3 = new Small();
}
private static void Example1()
{
//Covariance : an instance of more derived type object/class to be assign to less derived type object or class.
//Pass derive type where base type expected
Small sm1 = new Small();
Small sm2 = new Big();
Small sm3 = new Bigger();
Big b1 = new Big();
Big b2 = new Bigger();
//Contravarience
//Big b3 = new Small();
}
//public int SumToMaxInTree(int current, int max)
//{
//}
public List <NumberNode> GetAll()
{
List <NumberNode> nodes = new List <NumberNode>();
nodes.Add(this);
if (Smaller != null)
{
nodes.AddRange(Smaller.GetAll());
}
if (Bigger != null)
{
nodes.AddRange(Bigger.GetAll());
}
return(nodes);
}
public int SumToMax(int current, int max)
{
if (Bigger != null)
{
current += Bigger.SumToMax(0, max - current);
}
if (Value <= max - current)
{
current += Value;
NodeColor = Microsoft.Glee.Drawing.Color.Red;
}
if (Smaller != null)
{
current += Smaller.SumToMax(0, max - current);
}
return(current);
}
public PowerUp getPowerUp(PowerUpList chosenPowerUpID)
{
PowerUp chosenPowerUp = null;
switch (chosenPowerUpID) {
case PowerUpList.SlowDown:
chosenPowerUp = new SlowDown(10);
break;
case PowerUpList.SpeedUp:
chosenPowerUp = new SpeedUp(10);
break;
case PowerUpList.Warp:
chosenPowerUp = new Warp(10);
break;
case PowerUpList.IceyPlayer:
chosenPowerUp = new IceyPlayer(10);
break;
case PowerUpList.ObjectSpawnPowerUp:
chosenPowerUp = new ObjectSpawnPowerUp(10);
break;
case PowerUpList.Pull:
chosenPowerUp = new Pull(10);
break;
case PowerUpList.Push:
chosenPowerUp = new Push(10);
break;
case PowerUpList.Bigger:
chosenPowerUp = new Bigger(10);
break;
case PowerUpList.Smaller:
chosenPowerUp = new Smaller(10);
break;
case PowerUpList.OrbitingShield:
chosenPowerUp = new OrbitingShield(10);
break;
}
return chosenPowerUp;
}
