public Tier GetPreviousTier(Tier tier)
{
for (int i = 1; i < Tiers.Count; i++)
if (Tiers[i] == tier)
return Tiers[i - 1];
return null;
}
public bool PurchaseTier(Tier tier)
{
if (GoldCoins >= tier.Cost)
{
GoldCoins -= tier.Cost;
AvailableTiers.Add(tier.Name);
Save();
return true;
}
else
return false;
}
public Tier GetNextTier(Tier tier)
{
for (int i = 0; i < Tiers.Count - 1; i++)
if (Tiers[i] == tier)
return Tiers[i + 1];
return null;
}