Building your world - part seven: movement

Refactoring what we have

The existing test program is a bit awkward, especially for me as I have to remember to remove the actual username and passwords when pasting them into the blog.

So, first off create a new file called adventureconnection.py.

import mysql.connector

def make_connection():

    # Create a database connection using the host, user name, password and database name

    mydb = mysql.connector.connect(

    host="<yourusername>.mysql.pythonanywhere-services.com",
    user="<yourusername>",
    passwd="<mysqlpassword>",
    database="<yourusername>$adventure"

    )

    return mydb

Now either modify the testroom.py file or create a new one. I have created a new one called testadventure.py.

Import the Room class, then import the contents of adventure connection. The make _connection function can then be called to make the database connection.

from room import Room
import adventureconnection
mydb = adventureconnection.make_connection()
mycursor = mydb.cursor()


aroom=Room(3,mycursor)

print(aroom.get_details())

Output:
Ballroom======A room whose floor is covered in brightly coloured balls.There is a grand door to the eastNone

Movement

At this point there is only one player, so we can store the location in the program.

Modification to the Room class

The Room class needs a method that returns the room id in the supplied direction. If there is no link in that direction, it just returns the current room id.

# Actions

    def move(self,direction):

        if direction in self.linked_rooms:

            return self.linked_rooms[direction].get_destinationID()

        else:

            return self.roomID

Modification to the testadventure code

First create your cursor for the database access.
Then set the player's initial location (room one)
Loop while the player's location is not 3
  Get current room
  Print room description
  Get command
  If command is a direction then 

    Get room number in that direction 

    If the room number is unchanged then
      You cannot go that way
    else
      Change the location
End loop
Print Exit message

from room import Room

import adventureconnection

mydb=adventureconnection.make_connection()

mycursor = mydb.cursor()

player_location=1

while player_location!=3:

    current_room=Room(player_location,mycursor)

    current_room.get_details()

    command=input("> ")

    if command in("north","south","east","west"):

        print("Go "+command)

        new_location=current_room.move(command)

        if player_location==new_location:

            print("You cannot go " +command)

        else:

            player_location=new_location

print("And you have left the building...")

Testing the code:

Kitchen======

A bright shiny IKEA kitchenThere is a plain door to the south> northGo northYou cannot go northKitchen======A bright shiny IKEA kitchenThere is a plain door to the south> southGo southDining Hall======A room containing pale Scandinavian furnitureThere is a discrete door to the northThere is a grand door to the west> westGo westAnd you have left the building...