import time

class Room:
    def __init__(self, name, description):
        self.name = name
        self.description = description
        self.linked_rooms = {}
        self.items = []

    def add_linked_room(self, room_to_add, direction):
        self.linked_rooms[direction] = room_to_add

    def add_item(self, item):
        self.items.append(item)

    def remove_item(self, item):
        self.items.remove(item)

class Item:
    def __init__(self, name, description):
        self.name = name
        self.description = description

class Player:
    def __init__(self):
        self.inventory = []

    def add_to_inventory(self, item):
        self.inventory.append(item)

    def remove_from_inventory(self, item):
        self.inventory.remove(item)

def show_instructions():
    print("Welcome to the Adventure Game!")
    print("Commands: go [direction], get [item], use [item], quit")
    print("Directions: north, south, east, west")

def show_room_details(room):
    print("You are in " + room.name)
    print(room.description)
    if len(room.items) > 0:
        print("You see the following items:")
        for item in room.items:
            print(item.name)

def game_over():
    print("Thanks for playing!")
    exit()

# Create rooms
kitchen = Room("the Kitchen", "a large kitchen with a dirty floor")
living_room = Room("the Living Room", "a spacious living room with a comfy sofa")
bedroom = Room("the Bedroom", "a cozy bedroom with a soft bed")

# Add linked rooms
kitchen.add_linked_room(living_room, "east")
living_room.add_linked_room(kitchen, "west")
living_room.add_linked_room(bedroom, "north")
bedroom.add_linked_room(living_room, "south")

# Add items to rooms
knife = Item("Knife", "a sharp kitchen knife")
key = Item("Key", "a rusty old key")
living_room.add_item(knife)
bedroom.add_item(key)

# Create player
player = Player()

# Set starting room
current_room = kitchen

# Game loop
while True:
    show_room_details(current_room)
    command = input(">").strip().lower().split()

    if len(command) == 2:
        verb, noun = command
    elif len(command) == 1:
        verb = command[0]
        noun = None
    else:
        print("Invalid command!")
        continue

    if verb == "go":
        if noun in current_room.linked_rooms:
            current_room = current_room.linked_rooms[noun]
        else:
            print("You can't go that way!")
    elif verb == "get":
        if noun:
            for item in current_room.items:
                if item.name.lower() == noun:
                    player.add_to_inventory(item)
                    current_room.remove_item(item)
                    print("You picked up the", item.name)
                    break
            else:
                print("That item is not here!")
        else:
            print("Get what?")
    elif verb == "use":
        if noun:
            for item in player.inventory:
                if item.name.lower() == noun:
                    if item.name.lower() == "key" and current_room == bedroom:
                        print("You unlocked the door and found the treasure!")
                        time.sleep(2)
                        print("Congratulations! You win!")
                        game_over()
                    else:
                        print("You can't use that here!")
                    break
            else:
                print("You don't have that item!")
        else:
            print("Use what?")
    elif verb == "quit":
        game_over()
    else:
        print("Invalid command!")