public int GetFreeSlotID(ItemObject container)
{
List <ItemObject> _items = container.GetInnerItems();
List <int> IDs = new List <int>();
if (container.IsFull())
{
return(-1);
}
if (container.IsEmpty())
{
return(0);
}
for (int i = 0; i < _items.Count; i++)
{
IDs.Add(_items[i].inventoryData.GetSlotID());
}
for (int i = 0; i < _items.Count; i++)
{
if (IDs.Contains(i) == false)
{
return(i);
}
}
return(_items.Count);
}