Activity Checklist

• If you run the RPG.py file, you’ll be able to play a very basic RPG game that only has 2 rooms. Here’s a map of the game:

You can type go south to move from the hall to the kitchen, and then go north to go back to the hall again!

• You can also see what happens when you type in a direction that you cannot go. For example, there is no room to the west of the hall, so if you type go west, you’ll get a friendly error message.

• If you edit the RPG.py file, you can see that the map is coded as a dictionary of rooms:

#a dictionary linking a room to other room positions
    rooms = {

                1 : {  "name"  : "Hall" ,
                       "south" : 2
                    } ,        

                2 : {  "name"  : "Kitchen" ,
                       "north" : 1
                    }

             }

Actually, this is a dictionary that links a room number to another dictionary, containing all of the information about the room. For example, room 1 in the code above is the hall. The hall is linked to room 2 (the kitchen) to the south. Room 2 (the kitchen) also links to room 1 (the hall) to the north.

• Let’s add another room to your map (a dining room), to make it a bit more interesting!

This new dining room is linked to the hall (to the west). Let’s add this new room into the code:

#a dictionary linking a room to other room positions
rooms = {

            1 : {  "name"  : "Hall" ,
                   "south" : 2 ,
                   "east"  : 3
                } ,        

            2 : {  "name"  : "Kitchen" ,
                   "north" : 1
                } ,

            3 : {  "name"  : "Dining Room",
                   "west"  : 1
                }

         }

To add this room to the game, notice that you need to add the new room (room number 3), and give it a name. You also need to link to room 1 (the hall) to the west of the new room. You need to add information to the dictionary for the hall, to allow you to enter the dining room to the east. Remember to add a comma after the second room in the dictionary, or your code won’t run!

• Try out the game with the new dining room:

If you can’t move in and out of the dining room, just check that you added all of the code above (including the extra commas to the lines above).

Activity Checklist

• Adding an item into a room is easy. You can just add it to the dictionary of a room. For example, let’s put a key in the hall.

#a dictionary linking a room to other room positions
rooms = {

            1 : {  "name"  : "Hall" ,
                   "south" : 2 ,
                   "east"  : 3 ,
                   "item"  : "key"
                } ,        

            2 : {  "name"  : "Kitchen" ,
                   "north" : 1
                } ,

            3 : {  "name"  : "Dining Room",
                   "west"  : 1
                }

         }

Remember to put a comma after the line above the new item, or your program won’t run!

• If you run your game after adding the code above, you can now see a key in the hall, and you can even pick it up (by typing get key) and add it to your inventory!

Activity Checklist

• Adding an enemy to a room is as easy as adding any other item. Let’s add a hungry monster to the kitchen:

#a dictionary linking a room to other room positions
rooms = {

            1 : {  "name"  : "Hall" ,
                   "south" : 2 ,
                   "east"  : 3 ,
                   "item"  : "key"
                } ,        

            2 : {  "name"  : "Kitchen" ,
                   "north" : 1 ,
                   "item"  : "monster"
                } ,

            3 : {  "name"  : "Dining Room",
                   "west"  : 1
                }

         }

• You also want to make sure that the game ends if the player enters a room with a monster in. You can do this with the following code, which you should add to the end of the game.

#player loses if they enter a room with a monster
    if "item" in rooms[currentRoom] and "monster" in rooms[currentRoom]["item"]:
        print("A monster has got you... GAME OVER!")
        print("Press any key to quit")
        input()
        break

This code checks whether there is an item in the room, and if so, whether that item is a monster. Notice that this code is indented, putting it in line with the code above it. This means that the game will check for a monster every time the player moves into a new room.

• Test out your code by going into the kitchen, which now contains a monster.

Activity Checklist

• In this game, the player wins by getting to the garden and escaping the house. They also need to have the key with them, and the magic potion. Here’s a map of the game.

Notice that there’s another fourth room (the garden) that links to the dining room (to the north).

• Use the guidance in step 1 above to add a garden to your game. Remember to add doors, to link to other rooms in the house.

• Use the guidance in step 2 above to add a potion to the dining room (or another room in your house).

• To allow the player to win the game when they get to the garden with the key and the potion, add this code to the end of your game:

#player wins if they get to the garden with a key and a shield
    if currentRoom == 4 and 'key' in inventory and 'potion' in inventory:
        print("You escaped the house... YOU WIN!")
        print("Press any key to quit")
        input()
        break

Again, make sure this code is indented, and in line with the code above it. This code means that the message ...YOU WIN! is displayed if the player is in room 4 (the garden) and if the key and the potion are in the inventory. If you have more than 4 rooms, you may have to use a different room number for your garden in the code above.

• Test your game to make sure the player can win!

• Finally, let’s add some instructions to your game, so that the player knows what they have to do. Edit the showInstructions() function to include more information.

def showInstructions():
    #print a main menu, the commands and instructions
    print('''
RPG Game
========
Instructions:
  Get to the garden
  ...
========
Commands:
  go [direction]
  get [item]
''')

You will need to add instructions to tell the user what items they need to collect, and what they need to avoid!