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CSSE1001 Assignment 3
Due 5pm, Friday 30th October 2020
1 Introduction
In Assignment 2 you implemented a text-based version of the Key Cave Adventure Game. In Assignment 3 you
will modify this game to a graphical user interface (GUI) based game. Your implementation should maintain the
Apple model-view-controller (Apple MVC) structure used in Assignment 2. In this assignment, the View must be
implemented using tkinter.
The new version of this game is a single-player GUI-based game in which the player is presented with a grid of
squares (represented by either coloured rectangles or images). The objective is for the ibis (the player) to collect
the trash and take it to their nest. This game is full of adventure. The player can move either by key presses or
by clicking on an on-screen keypad.
2 Tips and hints
The number of marks associated with each task is not an indication of difficulty. Task 1 may take less effort than
task 2, yet is worth significantly more marks. A fully functional attempt at task 1 will likely earn more marks than
attempts at both task 1 and task 2 that have many errors throughout. Likewise, a fully functional attempt at a
single part of task 1 will likely earn more marks than an attempt at all of task 1 that has many errors throughout.
While you should be testing regularly throughout the coding process, at the minimum you should not move on
to task 2 until you have convinced yourself (through testing) that task 1 works relatively well, and if you are a
postgraduate student, you should not attempt the postgraduate task until you have convinced yourself (through
testing) that task 1 and task 2 both work relatively well.
Except where specified, minor differences in the look (e.g. colours, fonts, etc.) of the GUI are acceptable. Except
where specified, you are only required to do enough error handling such that regular game play does not cause your
program to crash or error. If an attempt at a feature causes your program to crash or behave in a way that testing
other functionality becomes difficult without your marker modifying your code, comment it out before submitting
your assignment.
You must only make use of libraries listed in Appendix A. You must not import anything that is not on this list.
You may use any course provided code in your assignment. This includes any code from the support files or sample
solutions for previous assignments from this semester only, as well as any lecture or tutorial code provided to
you by course staff. However, it is your responsibility to ensure that this code is styled appropriately, and is an
appropriate and correct approach to the problem you are addressing.
You must write all your code in one file, titled a3.py. You must only submit this file; you are not permitted to
submit any other files. Your game must display (in the latest attempted mode) when your marker runs this file.
This means that if you import code from previous assignments or previous support files, your code will not run
when we try to run it. If you would like to use course provided code, this code must be present within your a3.py
file.
3 Task 1: Basic Gameplay - 10 marks
Task 1 requires you to implement a functional GUI-based version of game of Key Cave Adventure Game. To do
this you will need to implement some View classes and make appropriate modifications to the Controller class from
Assignment 2.
Certain events should cause behaviour as per Table 1.
1
Event Behaviour
Key Press: ‘w’ User moves up one square if the map permits.
Key Press: ‘a’ User moves left one square if the map permits.
Key Press: ‘s’ User moves down one square if the map permits.
Key Press: ‘d’ User moves right one square if the map permits.
Left click on keypad User moves in the direction shown on the rectangle they click. If they click on
the keypad at a place that is not displaying a direction, nothing should happen.
Table 1: Events and their corresponding behaviours.
When the player wins or loses the game they should be informed of the outcome via a messagebox. After the user
closes the messagebox the game may terminate, or may remain open (further actions will not be tested; i.e. your
tutor will not try to continue playing the game).
In task 1, entities are represented by coloured rectangles. You must also annotate the rectangles of certain entities
with what they represent (as per Fig. 1). The colours representing each entity are:
• Wall: Dark grey
• Ibis (Player): Medium spring green
• Banana (MoveIncrease): Orange
• Trash (Key): Yellow
• Nest (Door): Red
Figure 1: Example game at the end of task 1.
The following sub-sections outline the required structure for your code. You will benefit from writing these classes
in parallel, but you should still test individual methods as you write them.
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3.1 Model classes
Model classes should be defined as per Assignment 2. You may add more modelling classes if they improve the
code. You should at least include Entity, Wall, Player, Item, Key, MoveIncrease, Door, and GameLogic. Note
that, though we’re now representing these classes with different concepts (e.g. the Door will be represented with a
graphical depiction of a nest) you don’t necessarily need to modify these classes to modify how they’re represented
in the graphical interface. You may choose to modify the names of the classes if this makes it easier for you to
understand, but you won’t need to.
3.2 View Classes
You must implement view classes for the game map and the keypad. However, because these can both be represented
by grids of rectangles and share a fair amount of functionality, you are required to create an abstract class
to factor out this shared functionality. Appendix B outlines methods that may be useful to write in each of these
classes. You may add additional methods if they improve the design of your classes.
3.2.1 AbstractGrid
AbstractGrid is an abstract view class which inherits from tk.Canvas and provides base functionality for many
of the view classes, as they share a fair amount of common functionality. Namely, they can be thought of as a
grid with a set number of rows and columns, and they should all support creation of text at specific positions
based on row and column. Though AbstractGrid is an abstract class, if it were to be instantiated, it would be
as AbstractGrid(master, rows, cols, width, height, **kwargs) where ‘**kwargs’ signifies that any named
arguments supported by tk.Canvas class should also be supported by AbstractGrid. Note that the number of
rows may differ from the number of columns.
3.2.2 DungeonMap
DungeonMap is a view class which inherits from AbstractGrid. Entities are drawn on the map using coloured
rectangles at different (row, column) positions. You may assume that the number of rows will always be the same
as the number of columns for the DungeonMap; i.e. the map is always a square. Your program should work for
reasonable dungeon sizes (#rows ∈ [4, 15]). Some entities have their IDs written on their cells (see Figure 1). You
must use the create rectangle and create text methods for tk.Canvas to achieve this. You should set the
background colour of the DungeonMap instance to light gray by using the kwargs. The DungeonMap class should be
instantiated as DungeonMap(master, size, width=600, **kwargs), where size is the number of rows (equal to
the number of columns) in the grid, and width is the number of pixels for the width and height of the grid.
3.2.3 KeyPad
KeyPad is a view class which inherits from AbstractGrid, and represents the GUI keypad. Each key is represented
as a rectangle created on the KeyPad canvas itself, with text superimposed over it (also created on the KeyPad
canvas itself). You must use the create rectangle and create text methods for tk.Canvas to achieve this. The
KeyPad class should be instantiated as KeyPad(master, width=200, height=100, **kwargs).
3.3 GameApp
GameApp represents the controller class. This class should manage necessary communication between any model
and view classes, as well as event handling. You must also write code to instantiate this class and ensure that
the window appears. Give your window an appropriate title, and (as per Figure 1) include a label with the
game name at the top of the window. This class should be instantiated as GameApp(master, task=TASK ONE,
dungeon name="game2.txt"), where TASK ONE is some constant (defined by you) that allows the game to be
displayed as per Figure 1. The dungeon name is the name of the file to load the level from. Though this argument
has a default value, all attempted features should work with other reasonable game files.
4 Task 2: Images, StatusBar, and File Menu - 6 marks
Task 2 requires you to add additional features to enhance the games look and functionality. Figure 2 gives an
example of the game at the end of task 2. Note: Your task 1 functionality must still be testable when
the task parameter of GameApp is set to the TASK ONE constant. If you attempt task 2, you must define
a TASK TWO constant which, when supplied as the task parameter for GameApp, allows the app to run with any
attempted task 2 features included. There should be no task 2 features visible when running the game in TASK ONE
mode.
3
Figure 2: Example game at the end of task 2.
4.1 StatusBar - 1.5 marks
Add a StatusBar class that inherits from tk.Frame. In this frame, you should include a game timer displaying the
number of minutes and seconds the user has been playing the current game alongside the clock image, as well as
a counter of the number of moves remaining alongside the lightning image. You must also include a ‘Quit’ button
(which ends the program), and a ‘New game’ button, which allows the user to start the game again (this must
reset the information on the status bar, as well as setting the map back to how it appears at the start of a game).
For full marks, the layout of the status bar must be as per Figure 2.
4.2 End of game - 0.5 marks
When the player wins or loses the game the game timer should be stopped and the player should be informed of
the outcome (including their score if they won) and prompted for whether to play again (see Figure 3). The score
is the user’s game time (lower is better). If they choose to play again, a new game should be prepared, and all
game information should be reset (this must be communicated on the status bar). If they opt not to play again,
the game should terminate.
4.3 Images - 2 marks
Create a new view class, AdvancedDungeonMap that extends your existing DungeonMap class. This class should
behave similarly to the existing DungeonMap class, except that images should be used to display each square rather
than rectangles (see the provided images folder). The view should be set up using the AdvancedDungeonMap when
the game is run in TASK TWO mode. You should still provide a functional DungeonMap class that allows us to test
your task 1 functionality when GameApp is run in TASK ONE mode. You will need to resize the images appropriately
depending on the level file. You may find the Pillow library useful for this task.
4
Figure 3: Game win (task 2).
4.4 File menu - 2 marks
Add a file menu with the options described in Table 2. Note that on Windows this will appear in the window,
whereas on Mac this will appear at the top of your screen. For saving and loading files, you must design an
appropriate file format to store information about games. You may use any format you like, as long as your save
and load functionality work together. Reasonable actions by the user (e.g. trying to load a non-game file) should
be handled appropriately (e.g. with a pop-up to inform the user that something went wrong).
Option Behaviour
Save game Prompt the user for the location to save their file (using an appropriate method
of your choosing) and save all necessary information to replicate the current
state of the game.
Load game Prompt the user for the location of the file to load a game from and load the
game described in that file.
New game Restart the current game, including game timer.
Quit Prompt the player via messagebox to ask whether they are sure they would
like to quit. If no, do nothing. If yes, quit the game (window should close and
program should terminate).
Table 2: File menu options.
5 Postgraduate Task: High scores and lives - 5 marks
There are three additional tasks for postgraduate students. If you are enrolled in the undegraduate version of this
course (CSSE1001), you may attempt these tasks, but you will not receive any marks for them. You must create a
MASTERS constant, which can be passed to the GameApp instance as the task argument to run the game with any
5
attempted postgraduate features visible. No postgraduate task features should be visible when running the game
in TASK ONE or TASK TWO mode.
5.1 Postgraduate task 1: High scores - 2 marks
To complete this task, you must add a ‘High scores’ option to the file menu you created in task 2. Selecting this
option should create a top level window displaying an ordered leaderboard of the best (i.e. lowest) scores achieved
by users in the game (up to the top 3); see Figure 5. These scores should persist even if the app is run again.
When a user wins a game, you must prompt them for their name to display next to their score if they are within
the top 3; see Figure 4. You will likely need to write high score information to a file, and read from that file. You
must ensure that if a file does not yet exist for these high scores, reading from and writing to such a file does not
cause errors in your program. Requesting to see the leaderboard when no file exists yet should cause a window
with only the ‘High Scores’ heading and ‘Done’ button to display. Entering a new high score when no file exists
yet should cause a file to be created.
Figure 4: Prompt for name on game win.
Figure 5: High score menu.
6
5.2 Postgraduate task 3: Lives - 3 marks
The player should start any new game with 3 ‘lives’. Each ‘life’ gives the user a chance to undo the most recent
move. When the user uses a life, the move count should be updated accordingly, their game time should be set
back to what it was immediately before they made their last move, and one ‘life’ should be removed from their
remaining lives. The number of lives remaining should be communicated in the status bar alongside the ‘lives.png’
image (as per Figure 4). You must not include this feature on the standard StatusBar. Instead, you should create
a new subclass of the StatusBar class for this task, which is only displayed when the task constant is set to
MASTERS.
6 Marking
Your total mark will be made up of functionality marks and style marks. Functionality marks are worth 16 of the
20 available marks for undergraduate students and 21 of the 25 available marks for postgraduate students. Style
marks are worth the other 4 marks. The style of your assignment will be assessed by one of the tutors, and you
will be marked according to the style rubric provided with the assignment. Your style mark will be calculated
according to:
Final style mark = Style rubric mark ∗ min(10, Functionality mark)/10
Your assignment will be marked by tutors who will run your a3.py file and evaluate the completeness and correctness
of the tasks you’ve implemented.
The table below specifies the mark breakdown for each of the tasks for CSSE1001 and CSSE7030 students.
Task CSSE1001 Marks CSSE7030 Marks
Task 1 10 marks 10 marks
Task 2 6 marks 6 marks
Postgraduate Task 0 marks 5 marks
Style 4 marks 4 marks
Total possible marks 20 marks 25 marks
Table 3: Mark breakdown for functionality.
7 Assignment Submission
Your assignment must be submitted via the assignment three submission link on Blackboard. You must submit
one file, named a3.py. You do not need to resubmit any files supplied to you (e.g. the images).
Late submission of the assignment will not be accepted. In the event of exceptional circumstances, you may submit
a request for an extension.
All requests for extension must be submitted on the UQ Application for Extension of Progressive Assessment
form: https://my.uq.edu.au/node/218/2 at least 48 hours prior to the submission deadline. The application
and supporting documentation must be submitted to the ITEE Coursework Studies office (78-425) or by email to
enquiries@itee.uq.edu.au.
8 Appendices
8.1 Appendix A: Permitted libraries
You may import the following libraries if you wish:
1. tkinter
2. PIL
8.2 Appendix B: Suggested methods for Task 1 classes
This section outlines some methods that may be useful to write in the view classes for task 1. Type hints and
return types are omitted, as it is up to you to determine what these should be. Note that this list is not necessarily
complete. You may also need to add more methods to these classes for task 2 and/or the postgraduate task. You
may choose not to implement some of these methods, but your code must still be well-designed.
8.2.1 AbstractGrid
The following methods may be useful to include in the AbstractGrid class.
• get bbox(self, position): Returns the bounding box for the (row, col) position.
• pixel to position(self, pixel): Converts the x, y pixel position (in graphics units) to a (row, col)
position.
• get position center(self, position): Gets the graphics coordinates for the center of the cell at the
given (row, col) position.
• annotate position(self, position, text): Annotates the cell at the given (row, col) position with the
provided text.
8.2.2 DungeonMap
• draw grid(self, dungeon, player position): Draws the dungeon on the DungeonMap based on dungeon,
and draws the player at the specified (row, col) position.
8.2.3 KeyPad
• pixel to direction(self, pixel): Converts the x, y pixel position to the direction of the arrow depicted
at that position.

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