public void refill_all_potions()
{
List<Potion> temporary_PTs = new List<Potion>();
for (int i = 0; i < inventory.Count; i++)
{
if (inventory[i] is Potion)
{
Potion oldPT = (Potion)inventory[i];
if (oldPT.is_potion_empty())
{
Potion nextPT = new Potion(oldPT);
nextPT.refill();
temporary_PTs.Add(nextPT);
}
}
}
for (int i = inventory.Count - 1; i >= 0; i--)
if (inventory[i] is Potion)
{
Potion P = (Potion)inventory[i];
if (P.is_potion_empty())
inventory.RemoveAt(i);
}
for (int i = 0; i < temporary_PTs.Count; i++)
acquire_potion(temporary_PTs[i]);
temporary_PTs.Clear();
}