import enum


class ItemTypes(enum.Enum):
    COCKPIT = 1
    REAKTOR = 2
    GYROSKOPE = 3
    ACTIVATOR = 4
    JOINT = 5
    SENSORS = 6
    SUSTAINMENT = 7


class Item(object):
    def __init__(self, item_type: ItemTypes):
        self._type = item_type

    @property
    def type(self):
        return self._type


class BigItem(Item):

    def __init__(self, item_type: ItemTypes, tonnage: float):
        super().__init__(item_type)
        self._tonnage = tonnage

    @property
    def tonnage(self) -> float:
        return self._tonnage


class Cockpit(BigItem):
    def __init__(self):
        super().__init__(ItemTypes.COCKPIT, 3.0)


class Reaktor(BigItem):

    def __init__(self, value: int, tonnage: float):
        super().__init__(ItemTypes.REAKTOR, tonnage)
        self._value = value

    @property
    def value(self):
        return self._value


class Activator(Item):
    def __init__(self):
        super().__init__(ItemTypes.ACTIVATOR)


class Joint(Item):
    def __init__(self):
        super().__init__(ItemTypes.JOINT)


class Sensors(Item):
    def __init__(self):
        super().__init__(ItemTypes.SENSORS)


class Sustainment(Item):
    def __init__(self):
        super().__init__(ItemTypes.SUSTAINMENT)