/// <summary>
/// Compares current combination to another one
/// </summary>
/// <param name="combination">combination to compare to</param>
/// <returns>1 if current combination is bigger, -1 if second combination is bigger, 0 if both combination are equal</returns>
public override int CompareTo(object combination)
{
if (!(combination is FourEqualsCombination))
{
throw new InvalidOperationException("Cannot compare FourEqualsCombination to an object of different type");
}
int result = 0;
FourEqualsCombination comb = combination as FourEqualsCombination;
if (this.Points > comb.Points)
{
result = 1;
}
else if (this.Points < comb.Points)
{
result = -1;
}
else
{
// non-sequential combinations with equal points can be Q, K, 10, A
int x = 0, y = 0;
switch (this.Cards[0].CardType)
{
case CardType.Ace:
x = 4;
break;
case CardType.Ten:
x = 3;
break;
case CardType.King:
x = 2;
break;
case CardType.Queen:
x = 1;
break;
}
switch (comb.Cards[0].CardType)
{
case CardType.Ace:
y = 4;
break;
case CardType.Ten:
y = 3;
break;
case CardType.King:
y = 2;
break;
case CardType.Queen:
y = 1;
break;
}
if (x > y)
{
result = 1;
}
else if (x < y)
{
result = -1;
}
}
return(result);
}