Solved-Assignment 2 Goosechasers: A Titled Goose Game -Solution

Description

You are a goose. Beautiful. Majestic. Unstoppable. In the wake of your majesty, even the most intense of human passions are but fleeting whispers in comparison – for not only are you a goose, you are the Goose: Her Excellency, Duchess Hilda von Goosensmirch the Red, Countess of Loch Lanore and Grandmaster of the Order of the Silver Leek. There are those, however, that claim to see you for what you truly are: a terror to society; an agent of chaos – an avatar of destruction.

The Goosechasers, as they call themselves, belong to a nefarious order of humans (and human-adjacent creatures) dedicated to your capture and suppression. Thanks to an unfortunate series of events, you, Duchess Hilda von Goosensmirch the Red, Countess of Loch Lanore and Grandmaster of the Order of the Silver Leek, have been cornered by one or more of these Goosechasers – a scenario most sub-optimal for you and yours.

You are, of course, a goose, and in all your wisdom and majesty, are privy to many a means of response to this situation. Perhaps you are feeling merciful, and simply wish to evade the Goosechasers until they are no longer a problem – or perhaps you have suffered their existence long enough, and must remind them that they have no right to encroach upon your domain.

Picture Credits: Pixabay, Uploaded by Alexas_Fotos on June 20th, 2018.
Overview

Description

For this assignment, you will write a game that simulates a wild goose chase. The player will control a goose – a creature – that moves from one location to another, while avoiding other creatures that wish to harm it. The goose may attempt to frighten other creatures into running away (permanently) by honking at them, though some creatures will be more difficult to frighten than others. If the goose is caught by another creature that it cannot frighten, the player loses. If the goose successfully navigates to a location that allows it to flee from the other creatures, or successfully frightens away all other creatures on the map, the player wins.

Implementation details

Your program will be written in Python 3. The only Python module that you are allowed to import is sys . To help you begin, a scaffold has been provided. This scaffold consists of the following files:

game.py , which should contain the main body of your program.

preprocessing.py

creature.py

location.py

item.py

creature_test.py (only relevant to final submission; see page 29 for details)

Your entire program must be contained in these files. It is recommended that you implement the functions in these files to the best of your ability, and use them to help you complete the assignment. You may create new functions as you see fit.

Additionally, a few sample configuration files have been given to help you start up your program.

Help and feedback

You are encouraged to ask questions about the assignment on the discussion board, on Ed.

Please ensure your code is comprehensible before requesting feedback. We recommend that your code adheres to the PEP 8 style guide, and is commented appropriately.

Staff may make announcements on Ed regarding any updates or clarifications to the assignment. You can ask questions on Ed using the assignments category. Please read this assignment description carefully before asking questions. Please ensure that your work is your own and you do not share any code or solutions with other students.

Submission

You will submit your code on two separate assignment pages on Edstem – one for your Milestone submission and one for your Final submission. You are encouraged to submit multiple times. After each submission, the marking system will automatically check your code against public test cases.

These public tests do not cover all parts of the specification and your code. The complete test suite contains both public and hidden test cases, and your code will not be run through this suite until after the assignment deadline.
Please ensure you carefully follow the assignment specification. Your program output must exactly match the output shown in the examples.

Warning: Any attempts to deceive or disrupt the marking system will result in an immediate zero for the entire assignment. Negative marks can be assigned if you do not properly follow the assignment specifications, or your code is unnecessarily or deliberately obfuscated.

Milestone

To ensure you are making regular progress on this assignment, you must have achieved a minimum level of functionality in your submission by October 28th, 11:59 PM AEST (Week 12 Monday) to receive a portion of the marks. See the Milestone Submission section at the end of this document for further details.

Configuration Files

The program will be given 4 extra command line arguments when it is run:

$ python3 game.py

These arguments (let’s call them configuration files) will be used to generate Location , Item , and Creature objects that you will need to run your program. The Location , Item , and Creature classes are to be defined in the location.py , item.py , and creature.py files, respectively, and the specification for these are available in the Classes section on page 6 onwards.

Examples of these configuration files are available in the provided scaffold; check for the files

sample_paths.txt , sample_items.txt , sample_chasers.txt , and sample_exits.txt Empty lines encountered in any configuration file can be safely skipped and ignored.

If fewer than 4 arguments are supplied, print: “Usage: python3 game.py ” and exit the program.

Of the given arguments, you can expect that they will all be paths to a file (and/or the name of a file). If any one of the files specified by the arguments do not exist, print: “You have

specified an invalid configuration file.” and exit the program.

 

The first argument, , should be the name of a file containing a list of all connections between Locations in the program. You can use this file to generate Location objects as defined on page 6. Each line is of the form:

START > DIRECTION > DESTINATION

Where START and DESTINATION are the names of Location objects, and DIRECTION indicates a direction on the compass (northwest, north, northeast, east, southeast, south, southwest, west) that a creature must travel towards in order to move between START and DESTINATION . For example:

Lake > northeast > Trail

Trail > SOUTH > Gazebo
If a Creature is currently at the Lake , it can move NORTHEAST to arrive at the Trail . Similarly, if a Creature is currently on the Trail , it can travel SOUTH in order to arrive at the Gazebo .

Paths do not need to be reflective – going north in location A and immediately going back south does not have to lead you back to location A. This is a game, so some paths might not make sense, and that’s ok! For example:

Lake > NORTH > Gazebo

Gazebo > South > Gazebo

Location names are case sensitive, but DIRECTION s are not.

When the program starts, the player will begin in the FIRST room specified by this file. If an empty file is given, print: “The game cannot run without any rooms :(” and exit the program.

You can reasonably expect that any file we will give you will contain valid input (i.e. no weird lines like “Grass > Fence > More Grass” or “Not enough > arrows” .)

 

The second argument, , should be the name of a file defining all the Item objects that are available in-game. Each line is of the form:

short_name | item_name | full_desc | terror_rating | location

Most of these are explained in the description of the Item class on page 9.

full_desc is a long description of the item which is written to a Location ‘s description if the item exists at that location, but has not been picked up by a Creature . More information on this in can be found in the Location description on page 6.

location – as it implies – specifies the name of a Location that the Item object will appear in when the game begins. You can expect that this is name will also appear somewhere in the configuration file.

For example:

rake | battered, old rake | A battered, old rake lies here, dreaming of lakes. | 2 | Garden

It is possible for the game to start and end with no items, so it is possible that the file specified by is empty. Should this be the case, the game should run as normal.

The third argument, , should be the name of a file defining all Creature objects in the game that are not controlled by the player. Each line of this file is of the form:

name | description | terror_rating | location | direction

The name of a Creature is a unique name that the program (and the user) can use to refer to the Creature object.

A description of the Creature will be written to a Location ‘s description if the Creature is in the same Location as the player.

terror_rating describes the terror_rating that a Creature begins with at the start of the game. This number represents how terrifying something is – or how difficult a Creature is to frighten. More details about this can be found in the Creature description on page 10. location – as it implies – specifies the name of a Location that the Creature object will appear in when the game begins. You can expect that this is name will also appear somewhere in the configuration file.

direction describes a movement pattern that a Creature will engage in if it is not controlled by the player. More on this on pages 10-12.

An example:

dog | A dog is barking at you! | 4 | Park | North

As the premise of the game is not possible without any creatures to chase the player, the file cannot be empty! If an empty file is provided, print: “There is nothing chasing you!” and exit the program.

 

The fourth argument, , should be the name of a file that contains a list of Location names. Each of these Location objects will allow the player to use the FLEE command (page 16) to win the game. If a line specifies a name that does not correspond to a Location , ignore it and move on to the next one.

It is possible for the configuration file to be empty – in that case, the player has no choice but to scare off all other Creatures to win!
Classes

Locations

Each location in the game is represented by an object of the Location class, which you can define in the given location.py scaffold. A Location object is characterised by:

A name attribute – this is unique to each Location ; no two Location objects should have the same name !

The ability to store Item objects. When the game begins, a Location may already contain one or more Item objects (as dictated by the configuration file.)

The player may also choose to DROP an object at their current location.

For each Location loc , you will also want to:

Store all other locations that a Creature can reach by moving in a compass direction away from loc . (These are defined by the configuration file, written on page 3.)

Know whether or not using the FLEE command when the player is at Location loc will end the game. (These are defined by the configuration file, written on page 5.)

At the start of the game, and whenever the player enters a new Location or whenever the LOOK command is invoked, a display representing their current Location is printed to standard output. Such a display consists of:

A visualisation of the room and its possible exits. This visualisation is always 5 lines long, and is populated by boxes [ ] to indicate locations reachable from the player’s position. There are nine possible boxes total: one for each point of the compass, and one for the player’s current location. The rstrip() method may be useful here.

The current location, [x] , is always in the middle of the third line (about four spaces/character widths from the left edge).

[x]

You are now at: A Room With No Paths.

There is nothing here.

>>
If it is possible for the player to reach another Location by moving northwest of their current position, another box [ ] will appear on the top left corner of the display, with a line leading to it from the current location [x] – like so:

[ ]

\

[x]

You are now at: A Room With One Path.

There is nothing here.

>>

Likewise, if it is possible for the player to reach another Location by moving north of their current position, another box will appear in the middle of the top row of the display – also with a line leading from the current location.

[ ]

|

[x]

You are now at: A Different Room.

There is nothing here.

>>

Similarly for the northeast/top right corner:

[ ]

/

[x]

You are now at: New Room.

There is nothing here.

>>

… and so on for all the points of the compass. Be aware that a Location can have multiple paths!

[ ]

|

[x]-[ ]

/

[ ]

You are now at: A Room With Three Paths.

There is nothing here.

>>
[] []

\ / [ ]-[x]

|

[ ]

You are now at: A Room With Many Paths. There is nothing here.

>>

So a room with all possible paths leading out will look as follows:

[ ][][] \ | /

[ ]-[x]-[ ]

/ | \

[][][]

You are now at: A Crossroads.

There is nothing here.

>>

Additionally, adjacent Locations that have one or more non-player Creature s inside of them will be represented with [C] instead.

[C] [C] [ ]

\ | /

[ ]-[x]-[ ]

/ | \

[C] [ ] [C]

You are now at: A Crossroads. There is nothing here.

>>

A line indicating the name of the player’s current location. It follows the form: “You are now

at: .”

A paragraph of variable length, derived from the full_desc attributes of all Item objects in the current Location , followed by the description attributes of all Creature objects in the current Location that are not controlled by the player (such Creatures will be described in more detail on page 10.)

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned hot dog here. Goosechaser Alice is trying to slow you down by scattering breadcrumbs at your feet.

>>
If there are multiple Item objects at a Location , the full_desc of the first item to be present in the Location will be printed first.

e.g. If the Garden contains a knife, then the player drops a donut in the Garden , the full_desc of the knife will be printed first, then the donut.

If there is no way to tell which Item arrived at the location first (i.e. they both started in the same room), this priority instead goes to the first Item to be defined in the configuration file.

If two or more Creature s not controlled by the player are in the same Location when this happens, the first Creature to appear in the configuration file will have its description printed first.

If no Items or non-player Creatures are at the player’s current Location , this line will instead say, “There is nothing here.”

If it is possible for the player to successfully use the FLEE command at a location (this is a win condition! Check the FLEE command on page 16 for more details), the following line is added to the end of the display: “The path to freedom is clear. You can FLEE this

place.”

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned hot dog here. Goosechaser Alice is trying to slow you down by scattering breadcrumbs at your feet.

The path to freedom is clear. You can FLEE this place.

>>

Items

Every item in the game is represented by an object of the Item class, which you can define in the given item.py scaffold. An Item object has the following attributes:

A short_name is an abbreviation of the item’s full name, which the user can use to refer to the item when entering commands. To avoid confusion, short_name s are unique and case-insensitive.

item_name is the item’s name in full, usually a short description of what it is. item_name s are also unique and case-insensitive.

full_desc is a long description of the item which is written to a Location ‘s description if

the Item exists at that location but has not been picked up by a Creature .

terror_rating describes how much more terrifying a Creature will look if it is carrying an

item. This should be a number, and can be negative or positive. Whenever a creature picks

up an item, the item’s terror_rating is immediately added to the creature’s. Whenever a

creature drops an item, the item’s terror_rating is immediately subtracted from the

creature’s.
Creatures

An object of the Creature class represents an entity in your game – you can define this class in the given creature.py scaffold. It could represent the goose that the player is trying to lead to safety, or any number of Goosechasers that are attempting to corner it. All non-player Creature objects should be defined in the configuration file (page 5). Creatures are characterised by the following properties:

A name – a unique and case-insensitive name that the program (and the user) can use to refer to the Creature object.

A terror_rating . This number represents how terrifying something is – or how difficult a Creature is to frighten.

At the start of the game, the player’s (goose’s) terror_rating is 5.

Every other Creature object’s initial terror_rating is defined by the file.

ALL Creatures , including those not controlled by the player, can obtain and carry Item objects that can modify its terror_rating .

Some way of keeping track of the Item objects being carried by the Creature .

Some way of keeping track of where the creature is – possibly by tying it to a Location . Be aware that all Creature objects should be able to move from one Location to another – and that more than one Creature can exist at the same Location at a time.

Goosechasers (Non-Player Creatures)

On top of the above, non-player Creatures (let’s call them Goosechasers) might have a description – a short description of this entity that is written to a Location ‘s display when the player is in the same room as the Creature .

Goosechasers are also special because of how they move and interact with the rest of the game! Each Goosechaser has a direction property that tells them what direction they’ll attempt to move in if they have to move. This property is defined for each Goosechaser in the configuration file.

Every time the player moves to a new location, uses the WAIT or HONK commands, drops an item, or picks up an item, all Goosechasers in the game will “take their turn” – starting with the Goosechaser that appears first in the configuration file, then the one that appears second, and so on. The player’s (goose’s) action – moving, waiting, or interacting with items – will always resolve before any Goosechasers can take their turn. A diagram has been provided on the next page to better illustrate how Goosechasers react to specific commands.

Player’s “Turn”

Player enters commands.

Free Actions
HELP Costly Actions
INV Alarming Actions
FLEE TAKE
LOOK DROP HONK

LOOK ME [ Any movement WAIT
LOOK HERE commands ]
LOOK
LOOK

Free Actions do not cause Costly Actions will cause Alarming Actions will
Goosechasers to act. Goosechasers to act if they always cause Goosechasers
are successful. to act.

Costly Action fails

Costly Action

succeeds

Goosechasers’ “Turn”

When all Goosechasers have acted, control is passed back to the player.

Goosechasers act in order of their

appearance in the file.

On their respective turns, a Goosechaser will perform one of the following actions, in order of priority:

If a Goosechaser and the player are in the same Location , the Goosechaser will try to catch the goose (player).

If the player’s terror_rating is not greater than that of the Goosechaser attempting to catch them, they are caught, and the game ends:

[ ] [ ]

\ |

[x]-[ ]

You are now at: The Danger Zone.

Goosechaser Bob is here!

>> DROP BALL

You drop the ball.

Bob is trying to catch you!

Oh no, you’ve been caught!

========= GAME OVER =========
However, if the player’s terror_rating is higher than that of the Goosechaser attempting to catch them, it will take the Goosechaser two attempts to catch the player.

If a Goosechaser moves to a different room, the number of attempts required for a Goosechaser to catch the player will reset. (i.e. Goosechasers that are frightened of the player must attempt to catch the player twice in the same room before succeeding.)

[ ] [ ]

\ |

[x]-[ ]

You are now at: The Danger Zone.

Goosechaser Bob is here!

>> DROP BALL

You drop the ball.

Bob is trying to catch you!

But your presence still terrifies them…

>> DROP KNIFE

You drop the knife.

Bob is trying to catch you!

Oh no, you’ve been caught!

========= GAME OVER =========

If a Goosechaser is able to reach the player’s current Location by moving in a specific direction D , it will set its direction attribute to D and move that way (where D is one of the compass directions).

If a Goosechaser arrives at a Location while the player is still in it, the following message is printed: ” has arrived at .”

[ ] [ ]

\ |

[x]-[C]

You are now at: The Danger Zone.

There is nothing here.

>> DROP BALL

You drop the ball.

Catherine has arrived at The Danger Zone.

>>
If a Goosechaser is in a Location that contains one or more Item objects, it will pick up one Item .

If there is more than one Item object at a Location , the Goosechaser will take the Item whose full_desc would be printed first in the Location ‘s display.

If two or more Goosechasers are in the same Location when this happens, the first Goosechaser to appear in the configuration file will act first.

The Goosechaser will attempt to leave its current location through the path specified by its direction (e.g. if Goosechaser Bob’s direction attribute is “north” , they will try to access the location to the north.)

If the direction it is trying to leave in is not an available path (i.e. it does not lead to another Location ), then it will go to the next direction that is clockwise from its original direction. An example:

Goosechaser Delila’s direction attribute says to go east , but their current location only has an exit to the south and north .

Goosechaser Delila looks for the eastern path. There is no eastern path.

Goosechaser Delila changes their direction to southeast . There is no southeast path.

Goosechaser Delila changes their direction to south . There is a southern path.

Goosechaser Delila leaves to the south.

If their current Location has no paths leading away from it, the Goosechaser will do nothing.

Be aware that it is possible for Goosechasers to be scared away permanently (see: the HONK command on page 16). This removes the Creature – and any Item s that it is carrying – from the game entirely. Goosechasers that have been scared away by a HONK will no longer appear in the game: they no longer appear in location displays, do not appear in location descriptions, can no longer be LOOK ed at, and have no interest in hunting down the goose (player).

Commands

Unless stated otherwise, all commands are case-insensitive.

QUIT

At any point, the player can end the game.

>> QUIT

Game terminated.

HELP

The game will list all valid commands and their usage.

>> HELP

HELP

INV

TAKE

DROP

– Shows some available commands.

– Lists all the items in your inventory.

– Takes an item from your current location.

– Drops an item at your current location.

LOOK or L – Lets you see the map/location again.

LOOK – Lets you see an item in more detail.

LOOK ME – Sometimes, you just have to admire the feathers.

LOOK – Sizes up a nearby creature.

LOOK HERE – Shows a list of all items in the room.

NORTHWEST or NW – Moves you to the northwest.

NORTH or N – Moves you to the north.

NORTHEAST or NE – Moves you to the northeast.

EAST or E – Moves you to the east.

SOUTHEAST or SE – Moves you to the southeast.

SOUTH or S – Moves you to the south.

SOUTHWEST or SW – Moves you to the southwest.

WEST or W – Moves you to the west.

FLEE

HONK or Y

WAIT

QUIT

– Attempt to flee from your current location.

– Attempt to scare off all creatures in the same location.

– Do nothing. All other creatures will move around you.

– Ends the game. No questions asked.

>>

On each line of this output, the left side before the dash is always padded so that it is 16 characters in width.
INV

Prints the goose (player)’s inventory. Each item’s item_name is printed, like so:

>> INV

You, a goose, are carrying the following items:

– big knife

– reflective sunglasses

– prescription glasses

>>

If the goose is carrying exactly one item, it instead prints:

>> INV

You, a goose, are carrying the following item:

– big knife

>>

If the user is carrying nothing, it instead says:

>> INV

You are carrying nothing.

>>

TAKE

Takes the specified item from the player’s current location, and adds it to their inventory. This action can change the player’s terror_rating .

[][]

\ |

[ ]-[x]-[ ]

\

[ ]

You are now at: Old Road.

Someone has stabbed a knife into the ground here. It looks rusty.

>> TAKE KNIFE

You pick up the rusty old knife.

>> INV

You, a goose, are carrying the following item:

– rusty old knife

>>

If the user attempts to take something that doesn’t exist, however, it prints:

>> TAKE CAKE

You don’t see anything like that here.
DROP

Removes the specified item from the player’s inventory, and places it at their current location.

This action can change the player’s terror_rating .

[ ] [ ]

\ |

[ ]-[x]-[ ]

\

[ ]

You are now at: Old Road.

There is nothing here.

>> DROP knife

You drop the rusty old knife.

> LOOK [][] \ |
[ ]-[x]-[ ]

\

[ ]

You are now at: Old Road.

Someone has stabbed a knife into the ground here. It looks rusty.

>>

If you attempt to drop something that doesn’t exist in your inventory, however, the program will produce the following:

>> DROP CAKE

You don’t have that in your inventory.

FLEE

If the player invokes this command at one of the locations specified by the configuration file, the game is won.

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned burrito here. Goosechaser Alice is trying to slow you down by scattering breadcrumbs at your feet.

The path to freedom is clear. You can FLEE this place.

>> FLEE

You slip past the dastardly Goosechasers and run off into the wilderness!

Freedom at last!

========= F R E E D O M =========
If the player attempts to FLEE at a Location that is not specified by the configuration file, however, the attempt fails.

[ ] [ ]

\ |

[ ]-[x]-[ ]

\

[ ]

You are now at: Old Road.

Someone has stabbed a knife into the ground here. It looks rusty.

>> FLEE

There’s nowhere you can run or hide! Find somewhere else to FLEE.

>>

HONK or Y

Attempts to scare off every other creature at the player’s location using the player’s

terror_rating . If the player’s terror_rating is higher than that of a target creature’s, they are scared away permanently!

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned burrito here. Goosechaser Alice is trying to slow you down by scattering breadcrumbs at your feet. A dog is minding its own business here.

>> HONK

You sneak up behind your quarry and honk with all the force of a really angry airhorn! HONK!

Alice is spooked! They flee immediately!

Dog is spooked! They flee immediately!

>> LOOK

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned burrito here.

>>

If you successfully scare away ALL the creatures in the game, you win (as illustrated on the next page.)

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned burrito here. Goosechaser Alice is trying to slow you down by scattering breadcrumbs at your feet. A dog is minding its own business here.

>> Y

You sneak up behind your quarry and honk with all the force of a really angry airhorn! HONK!

Alice is spooked! They flee immediately!

Dog is spooked! They flee immediately!

None can stand against the power of the goose!

========= V I C T O R Y =========

If your terror_rating is less than or equal to that of a creature you honked at, the creature is not frightened – and will probably try to catch you.

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned burrito here. Goosechaser Alice is trying to slow you down by scattering breadcrumbs at your feet. A dog is minding its own business here.

>> Y

You sneak up behind your quarry and honk with all the force of a really angry airhorn! HONK!

Alice is not spooked :(

Dog is spooked! They flee immediately!

Alice is trying to catch you!

Oh no, you’ve been caught!

========= GAME OVER =========

If you HONK when no other creatures are in the room with you:

[ ] [ ]

\ |

[x]-[ ]

You are now at: The Danger Zone.

There is nothing here.

>> Y

All shall quiver before the might of the goose! HONK!

>>
WAIT

This causes all Creature s that are not controlled by the player (i.e. Goosechasers) to “take their turn” (pick up an item, move one room, attempt to catch the goose, etc.)

[ ] [ ]

\ |

[x]-[C]

You are now at: The Danger Zone.

There is nothing here.

>> WAIT

You lie in wait.

Catherine has arrived at The Danger Zone.

> LOOK [][] \ |
[x]-[ ]

You are now at: The Danger Zone.

Goosechaser Catherine is brandishing a net at you, threateningly.

>>

LOOK and L

Displays the location you are currently in.

>> LOOK

[ ]-[x]

\

[ ]

You are now at: The Shallows.

There is nothing here.

>>

>> L

[ ]-[x]

\

[ ]

You are now at: The Shallows.

There is nothing here.

>>
LOOK

Allows the player to examine items in their inventory or at their current location. The item’s short_name will work for this. The output for this command follows this format: ” –

Terror Rating: ” , as shown below.

>> INV

You, a goose, are carrying the following items:

– big knife

– reflective sunglasses

– prescription glasses

>> LOOK KNIFE

big knife – Terror Rating: 5

>>

[ ]-[x]

|

[ ]

You are now at: The Den.

There is an abandoned taco here.

>> LOOK TACO

really sad taco – Terror Rating: 1

>>

If no such item exists, print the following; note that the item name given is converted to lower case.

>> LOOK BURGER

You don’t see anything like that here.

>>

LOOK ME

Displays your current stats.

>> LOOK ME

You are a goose. You are probably quite terrifying.

In fact, you have a terror rating of: 5

>>
LOOK

Assesses a creature and how frightened it seems of the goose (player). Uses the creature’s name as the argument. The creature must be in the same location as the player. Measures the player’s terror_rating against target creature’s. If the player’s terror_rating exceeds the target creature’s by 5 or more, then the result looks like this:

[ ]

/

[ ]-[x]

/ \

[] []

You are now at: The Burrows.

Dog is here, for some reason.

>> LOOK DOG

Dog looks a little on-edge around you.

If the player’s terror_rating is exceeded by the target creature’s by 5 or more, then the result instead looks like this:

[ ]

/

[ ]-[x]

/ \

[] []

You are now at: The Burrows.

Dog is here, for some reason.

>> LOOK DOG

Dog doesn’t seem very afraid of you.

In all other cases, print the following:

[ ]

/

[ ]-[x]

/ \

[] []

You are now at: The Burrows.

Cat is here, for some reason.

>> LOOK CAT

Hmm. Cat is a bit hard to read.
If there is no such Creature present at the player’s Location , this action fails.

[ ]-[x]-[ ]

\

[ ]

You are now at: Under the Moonlight.

There is nothing here.

>> LOOK CAT

You don’t see anything like that here.

LOOK HERE

Lists the short_name s and item_name s of all Item objects at the player’s current Location .

[ ]

|

[x]-[ ]

/

[ ]

You are now at: a Big Tree.

There is a rake on the ground, dreaming of lakes. Red and unblemished, a freshly-fallen apple rests on the ground here. A weird blue rock minds its own business in the corner, unmoving. There is a bucket of gold paint here. It is dangerously full.

>> LOOK HERE

RAKE

APPLE

ROCK

BUCKET

| ordinary rake

| freshly-fallen apple

| blue rock

| bucket of paint

>>

The short_name of each item is always displayed in upper-case letters. The left side is also padded so that it is always 16 characters in width.

If there are no Item objects at the player’s Location , it instead prints:

>> LOOK HERE

There is nothing here.
Movement Commands

Moves the user to a connecting location in that specified direction.

[ ]

/

[ ]-[x]

/ \

[] []

You are now at: The Burrows.

Cat is here, for some reason.

>> SW

You move southwest, to The Granary.

[ ] [ ] | /
[x]-[ ]

|

[ ]

You are now at: The Granary.

There is nothing here.

>>

If there is no room that can be accessed by moving in the specified direction, the program will instead print:

>> SOUTHEAST

You can’t go that way.

Invalid Commands

If the user enters an invalid command, print You can’t do that. and ask for another command.

>> SLEEP

You can’t do that.

>>
Sample Output

Here is a sample output of the program, which has been run using the sample configuration files given to you in the scaffold. Note that the program begins by printing a display and description of the first location to appear in the configuration file, then by prompting the user for a command.

[] [C]

\ / [ ]-[x]

|

[ ]

You are now at: Fountain.

A grimy copper coin is stuck fast to the ground here. A weird blue rock minds its own business in the corner, unmoving.

> look here

COIN

ROCK

| strange copper coin

| blue rock

>> LOOK coin

strange copper coin – Terror Rating: 2

>> look ME

You are a goose. You are probably quite terrifying.

In fact, you have a terror rating of: 5

>> east

You can’t go that way.

>> cry

You can’t do that.

>> take coin

You pick up the strange copper coin.

Dog has arrived at Fountain.

>> look dog

Hmm. Dog is a bit hard to read.

>> northwest

You move northwest, to Phone Booth.

Dog has arrived at Phone Booth.

[ ]

/

[x]

/ \

[C] [ ]

You are now at: Phone Booth.

Bright red and striking, a ribbon adds a bit of colour to the ground here. A dog is barking at you!

>> ne

You move northeast, to Painted Fences.
Dog has arrived at Painted Fences.

[ ] [ ] | /
[x]-[ ]

/

[ ]

You are now at: Painted Fences.

There is a bucket of green paint here. It is dangerously full. A dog is barking at you!

>> wait

You lie in wait.

Dog is trying to catch you!

But your presence still terrifies them…

>> n

You move north, to Windmill.

Dog has arrived at Windmill.

[x]-[ ]

|

[ ]

You are now at: Windmill.

Someone has stabbed a knife into the ground here. It looks rusty. A dog is barking at you!

The path to freedom is clear. You can FLEE this place.

>> take knife

You pick up the rusty old knife.

Dog is trying to catch you!

But your presence still terrifies them…

>> look me

You are a goose. You are probably quite terrifying.

In fact, you have a terror rating of: 12

>> look dog

Dog looks a little on-edge around you.

>> HONK

You sneak up behind your quarry and honk with all the force of a really angry airhorn! HONK!

Dog is spooked! They flee immediately!

Greg has arrived at Windmill.

>> INV

You, a goose, are carrying the following items:

– strange copper coin

– rusty old knife

>> FLEE
You slip past the dastardly Goosechasers and run off into the wilderness!

Freedom at last!

========= F R E E D O M =========

Submission and Mark Breakdown

Submit your assignment on Ed in the Assignments section of the Assessments tab. Your final submission is due on Monday, November 4th 2019 AEST (Week 13 Monday). The marking breakdown of the assignment is as follows (10 marks):

3 marks will be awarded as a progress mark, as described in the Milestone Submission section below.

2 marks will be awarded for code correctness, assessed by automatic test cases on Ed.

Some test cases will be hidden and will not be available before the deadline.

3 marks will be awarded through manual marking. Your tutors will check your code for:

Code style and readability

Appropriateness of code comments

Code and logical structures

A further 2 marks will be awarded for the submission of a test driver program (this is separate from the test cases submitted as part of your milestone submission). Such a program will be described in further detail on page 29.

1 mark will be awarded for the presence and correctness of test cases submitted.

1 mark will be awarded for the justification of these test cases.

Milestone Submission

2 marks can be awarded for the code submitted in a milestone submission (here) before Monday, October 28th 2019 AEST (Week 12 Monday). These marks will be awarded based on the number of automatic test cases passed, which will generally test for the following:

The completion (and correctness) of the functions in preprocessing.py

For the purposes of this milestone submission, please complete the functions in preprocessing.py as accurately to the scaffold as you can; down to appropriate return values (where applicable).

Handling missing arguments

Handling missing files

Program start-up (first display + input loop)

Working input loop

Handling invalid commands

The following commands:

HELP

QUIT

LOOK ME when no items are carried

INV when no items are carried

Additionally, 1 mark will be awarded for submitting a suite of four test cases. These test cases must be available in a separate tests directory that is included in your last submission to the milestone assessment, alongside your actual program.
We will describe a scenario for each of these test cases. Your task is to provide the relevant configuration files for each test case, and the expected output of the program. All of the test cases described will have the following Location structure:

Stairway

(Location)

EAST

WEST

Goose Heaven

(Location)

The Goose begins the FLEE can be used here.

game here.

Scenario 1: No Goosechasers

Configuration Files: [ 1_paths.txt , 1_items.txt , 1_chasers.txt , 1_exits.txt ]

The expected output of your program should be written in another file, labelled 1_expected.txt .

In this scenario, no creatures are chasing after the goose (player). No inputs will be given to your program.

Scenario 2: One Goosechaser, Goose Flees

Configuration Files: [ 2_paths.txt , 2_items.txt , 2_chasers.txt , 2_exits.txt ]

The expected output of your program should be written in another file, labelled 2_expected.txt .

In this scenario, there is one Goosechaser that begins the game at the exit Location , Goose Heaven. Upon execution, the program will receive the following inputs:

EAST

FLEE

The goose (player)’s attempt to flee will be successful.

Scenario 3: One Goosechaser, Goose Caught

Configuration Files: [ 3_paths.txt , 3_items.txt , 3_chasers.txt , 3_exits.txt ]

The expected output of your program should be written in another file, labelled 3_expected.txt .

In this scenario, there is one Goosechaser that begins the game at the exit Location , Goose Heaven. Upon execution, the program will receive the following inputs:

EAST

The goose will be caught, and the game will end.
Scenario 4: One Goosechaser, Goose Indomitable

Configuration Files: [ 4_paths.txt , 4_items.txt , 4_chasers.txt , 4_exits.txt ]

The expected output of your program should be written in another file, labelled 4_expected.txt .

In this scenario, there is one Goosechaser that begins the game at the exit Location , Goose Heaven. Upon execution, the program will receive the following inputs:

EAST

HONK

The goose will succeed in scaring away the Goosechaser, and the game will end.

Uploading Your Test Cases

Remember to upload all your correctly-labelled test case files in a separate tests directory alongside your milestone submission. It is not sufficient to simply upload the test cases to your workspace: for your tutor to be able to access these files, you need to click the Mark button as well – even if you’ve already received all the green ticks to confirm that you’ve passed the automatic test cases.
Final Submission: Test Cases

As previously described, 2 marks will be awarded for the submission of a test driver program – which is basically just a program that runs some unit tests for you. Alongside your final submission, you will submit an additional Python program, titled creature_test.py . This will be a test driver program for the Creature class defined on page 10 of this document.

The program creature_test.py will define and run at least 5 different unit tests for the Creature class.

Each test must include the creation of a Creature constructor ( __init__ ) and the methods take() ,

object, and use any combination of the drop() , and get_terror_rating() .

Each test will be assigned some number X . Whenever a test fails, it prints the message:

“Test X failed.” , where X is the number it has been assigned.

The description and data for each test case must be written as comments within creature_test.py . No other files should be required for unit testing.

The mark awarded for the justification of your test cases will be assessed through this component of your submission.

A template for this creature_test.py has been included as part of your scaffold. If you’re unsure of where to start on this, reviewing components of the course that touch on the concept of testing is a good idea.

Academic declaration

By submitting this assignment, you declare the following:

I declare that I have read and understood the University of Sydney Student Plagiarism: Coursework Policy and Procedure, and except where specifically acknowledged, the work contained in this assignment/project is my own work, and has not been copied from other sources or been previously submitted for award or assessment.

I understand that failure to comply with the Student Plagiarism: Coursework Policy and Procedure can lead to severe penalties as outlined under Chapter 8 of the University of Sydney By-Law 1999 (as amended). These penalties may be imposed in cases where any significant portion of my submitted work has been copied without proper acknowledgment from other sources, including published works, the Internet, existing programs, the work of other students, or work previously submitted for other awards or assessments.

I realise that I may be asked to identify those portions of the work contributed by me and required to demonstrate my knowledge of the relevant material by answering oral questions or by undertaking supplementary work, either written or in the laboratory, in order to arrive at the final assessment mark.

I acknowledge that the School of Computer Science, in assessing this assignment, may reproduce it entirely, may provide a copy to another member of faculty, and/or communicate a copy of this assignment to a plagiarism checking service or in-house computer program, and that a copy of the assignment may be maintained by the service or the School of Computer Science for the purpose of future plagiarism checking.