public override Cost Pay(ref Cost c)
{
if (c == null)
{
return(this);
}
c.OrderFirst(this.GetDominantMana());
Costs cl = c as Costs;
if (cl != null)
{
Cost tmp = this.Clone();
for (int i = 0; i < cl.CostList.Count; i++)
{
Cost cli = cl.CostList [i];
tmp = tmp.Pay(ref cli);
if (cli == null)
{
cl.CostList.RemoveAt(i);
i--;
}
if (tmp == null)
{
break;
}
}
if (cl.CostList.Count == 0)
{
c = null;
}
return(tmp);
}
Mana m = c as Mana;
if (m == null)
{
return(this);
}
if (m is ManaChoice)
{
ManaChoice mc = m.Clone() as ManaChoice;
for (int i = 0; i < mc.Manas.Count; i++)
{
Cost result = this.Clone();
Cost tmp = mc.Manas[i];
result = result.Pay(ref tmp);
if (tmp == null)
{
c = null;
}
if (result == null)
{
return(null);
}
}
}
else
{
if (TypeOfMana == m.TypeOfMana || TypeOfMana == ManaTypes.Colorless)
{
count -= m.count;
if (count == 0)
{
c = null;
return(null);
}
else if (count < 0)
{
m.count = -count;
return(null);
}
else
{
c = null;
return(this);
}
}
}
return(this);
}
