def __init__(self):
"""
creation of inventory-related interface
"""
# inventory is obligatory
from machine.inventory import MetaInventory
self.inventory = MetaInventory(self)
class InventoryInterface:
"""
interface for all classes containing some inventory
"""
def __init__(self):
"""
creation of inventory-related interface
"""
# inventory is obligatory
from machine.inventory import MetaInventory
self.inventory = MetaInventory(self)
def get_inventory(self):
"""
grant access to the inventory
"""
return self.inventory
def get_items_from(self, inventory):
"""
choose and obtain items from an inventory
"""
# by default choose all possible items
items_ = inventory.choose_all()
# remove all the items from original inventory (in order to avoid duplication)
inventory.remove(*items_)
return items_
def add_items(self, *items_):
"""
shortcut for adding items to inventory
"""
self.inventory.add(*items_)
def has_empty_inventory(self):
"""
is the inventory of this object empty?
"""
return self.inventory.is_empty()
def count_items(self):
"""
count the items in the inventory
"""
return len(self.inventory.get_items())