We’re going to add two new commands, Look and Items
- Look will show your current location and objects
- Items will show the items you’re currently carrying
places = ["A clearing in a forest", "An old wooden cabin", "A dark cave"]
moves = [{"n": 1, "s": 2}, {"s": 0}, {"n": 0}]
objects = {"spanner":0, "lockpick":0, "spade":2}
location = 0
def print_objects():
for key, val in objects.items():
if val == location:
print(key)
def items():
print("You are carrying: ")
for key, val in objects.items():
if val == 99:
print(key)
def take_object(noun):
for key, val in objects.items():
if key == noun and val == location:
print("Got it!")
objects[noun] = 99
def drop_object(noun):
for key, val in objects.items():
if key ==noun and val == 99:
print("Dropped ", noun)
objects[noun] = location
def Main():
ans = ""
global location
print(places[0])
print_objects()
while ans != "bye":
ans = input("What now?")
words = ans.split()
# Check if it's a one word input
if len(words) == 1:
if ans == "items":
items()
elif ans == "look":
print(places[location])
print_objects()
elif ans in moves[location]:
location = moves[location].get(ans)
print(places[location])
print_objects()
else:
print("I can't move that way")
else:
verb = words[0] # e.g. Take or Drop
noun = words[1] # e.g. hammer or spanner
if verb == "take":
take_object(noun)
elif verb == "drop":
drop_object(noun)
else:
print("I don't understand what you mean")
Main()Exercise
- Look at the Main() function. Why is location a global variable?
- List the one word commands that are permitted in this program
- What does the printobjects() function do?
- Look at the items() function. Why does it only print items where val =99?
You’re going to add a help function. If the user enters “help” the program will print the following instructions: “Type n,s,e,w to move north, south, east and west.”
- Add an elif statment under the elif ans == “look”: statement to check if the user has entered “help”
- Add code to print the help instructions
Tony Ballantyne Tech 