/// <summary>
/// Gets the specified slot from the specified storage. Null if this item storage does not have
/// a slot with the given identifier.
/// </summary>
/// <param name="itemStorage"></param>
/// <param name="slotIdentifier"></param>
/// <returns></returns>
public static ItemSlot Get(ItemStorage itemStorage, SlotIdentifier slotIdentifier)
{
if (!itemStorage.HasSlot(slotIdentifier))
{
return(null);
}
var instanceID = itemStorage.GetInstanceID();
slots.TryGetValue(instanceID, out var dict);
if (dict == null)
{
dict = new Dictionary <SlotIdentifier, ItemSlot>();
slots.Add(instanceID, dict);
}
dict.TryGetValue(slotIdentifier, out var slot);
if (slot == null)
{
slot = new ItemSlot(itemStorage, slotIdentifier);
dict.Add(slotIdentifier, slot);
}
return(slot);
}