Software Architecture Design and Implementation
COSC 2391/2401 Semester 2, 2018
Casino Style Card Game
Assignment Part 2: AWT/Swing UI Implementation (25 marks)
This assignment requires you to build an AWT/Swing graphical user interface for the Card Game that
reuses your code from assignment part 1.
You should build on top of your existing assignment part 1 functionality and should not need to
change your existing Game Engine code if it was correct in assignment part 1. You can seek help in
the tutelab/consultation to finish assignment part 1 if necessary (since it is a core requirement of this
course that you should be able to work with basic OO classes and interfaces). Furthermore, you will
require a solid understanding of classes/interfaces to write effective AWT/Swing!
As part of your new implementation you must write a GameEngineCallbackGUI class that is added
to the GameEngine via the existing addGameEngineCallback() method. This class will be
responsible for managing all of the graphical updates as the game is played. NOTE: this class should
not actually implement the UI functionality but instead for cohesion it should call methods on other
classes, especially the view. To state another way, it must be the entry point for any UI code resulting
from game play, in order to avoid coupling between the GameEngine and the UI which is counter to
the original specification.
This GameEngineCallbackGUI is to be added in addition to the console based
GameEngineCallbackImpl from assignment 1 in order to demonstrate that your GameEngine can
work with multiple callbacks i.e. both (all) callbacks are called for any relevant operation such as
dealHouse()/dealPlayer(). NOTE: This is the main reason the assignment part 1 specification
required the GameEngineImpl to handle multiple callbacks!
AWT/Swing User Interface
You are to develop an AWT/Swing user interface that implements the following basic functionality:
Add players (including name and initial betting points balance)
Place a bet (per player) and display an error message for invalid bets
Player deals (per player) .. each card is shown in real-time as it is dealt
House deals (automatically after all players have bet/dealt) .. each card is shown in real-time as it is
dealt
Display results including updated player balances after house deal
NOTE: You should set your delay to 1 second (1000ms) for testing and submission.
It is up to you how to design the layout and appearance of your interface and you should focus on
clarity and simplicity rather than elaborate design. However, to demonstrate competency you should
include at least one each of the following.
A pull-down menu (like the standard File menu in Eclipse)
A dialog box
A toolbar
A status bar
A switchable per player panel which represents the dealt cards (see UI Implementation/Limitations
below)
A summary panel which is always visible which shows player names and their current points balance
Marking emphasis will be on the quality of your code and your ability to implement the required
functionality as well as basic usability of the UI (based on the usability attributes described in the
lecture notes).
Your code should be structured using the Model View Controller pattern (MVC) where the
GameEngineImpl from assignment part 1 serves as the model, the listeners represent the
controllers as separate classes (each in a separate file placed in the controller package), whereas
the GameEngineCallbackImpl and new GameEngineCallbackGUI are part of a view package
(or sub-packages), as are any additional UI classes such as frames, dialogs, components, menus etc.
Furthermore, you must NOT use static referencing (e.g. no use of the Singleton pattern) and therefore
all references required by different classes must be passed as parameters (e.g. via constructors).
IMPORTANT: All of your GUI code (MVC views including the GameEngineCallbackGUI and
controllers) should be separate from your GameEngineImpl implementation (MVC model).
Furthermore, all of your GUI code should call your GameEngineImpl implementation via the
GameEngine interface only. You should not add any UI code to the GameEngineImpl with the
primary test being that your UI code should work with any GameEngine implementation (for example
our own implementation we will use for testing). i.e. your UI should not require anything additional
from the assignment 1 GameEngineImpl if implemented correctly according to the Javadoc and
assignment 1 specification. Finally, your GameEngineImpl should still pass the Validator checks
from assignment 1.
NOTE: It is a core learning outcome of this assignment to demonstrate that encapsulation and
programming to interfaces provides complete separation such that code written by independent
parties can work together seamlessly without any change!
UI Implementation/Limitations
You must only display the UI for a single player at a time, whereby the visible/active player can be
directly selected from a list or combo box. The dealt cards are the most important part of part of the
player UI.
The card panel must have the appearance of animation but can be as simple as a JLabel that is
updated for each new intermediate result received from the GameEngineCallback methods, but it
will likely be more rewarding and impress your friends if you can find some nice creative commons or
free for personal use card graphics :) You cannot however simply replicate the logging behaviour of
assignment 1 in a JTextArea or similar component.
More importantly, since the UI is per player, if a player is currently visible and being dealt cards, when
you switch to another player the UI should stop animating the dealt cards and should instead display
the last cards dealt to the player you switched to. You can however assume that only one player will
be dealt to at a time so you do not have to handle concurrency in the Game Engine.
All this behaviour is readily facilitated by the GameEngineCallback which receives a Player
instance as a parameter, so as long as your GUI keeps track of the current player it can receive
updates for all players and display only the current/relevant player in the GUI, while your
GameEngineCallbackImpl from assignment 1 will log all players to the console.
NOTE: Although threads will be covered towards the end of the semester, AWT/Swing requires all
calls to the UI (any methods in AWT/Swing such as creating a component, laying out, or updating) to
be done on the AWT Event Dispatch Thread. Furthermore, since the
dealPlayer(…)/dealHouse(…) methods of GameEngineImpl execute in a loop with a delay it is
necessary to run them in a separate thread so they do not lock up the UI.
To achieve this you can use the code below. You don’t need to know exactly how this works for now
(although the API docs are useful here and we will also cover in class) but hopefully you are able to
identify how the code is simply using anonymous inner classes to execute some code on a separate
thread!
To call a GameEngineImpl method (such as dealPlayer()) on a separate thread.
new Thread()
{
@Override
public void run()
{
//call long running GameEngine methods on separate thread
}
}.start();
To update the GUI from the callback ..
SwingUtilities.invokeLater(new Runnable()
{
@Override
public void run()
{
// do GUI update on UI thread
}
});
Implementation Details
IMPORTANT: As with assignment one you must not change any of the interfaces. You may
implement any other helper classes that you need to. A correct implementation should not require any
changes to the GameEngineImpl, only the addition of new AWT/Swing classes to build the UI, in
addition to a new GameEngineCallbackGUI.
To demonstrate cohesion and correct OO techniques, all UI code must be written carefully by hand.
You can use builder tools (such as NetBeans) to aid prototyping but all final code must be written by
hand. You will lose marks for if you submit generated code! You will also be breaching the third party
code requirement below.
SUMMARY
1. You should use MVC implementation for your system.
2. You should write all your listeners as separate controller classes in the controller
package.
3. You must not use any static referencing (e.g. no use of the Singleton pattern permitted).
4. You should aim to provide high cohesion and low coupling.
5. You should aim for maximum encapsulation and information hiding.
6. You should rigorously avoid code duplication.
7. You should comment important sections of your code remembering that clear and readily
comprehensible code is preferable to a comment.
8. Since this course is concerned with OO design you should avoid the use of Java 8 lambdas
which are a functional programming construct.
9. You should use extra threads where necessary (based on the sample code provided above)
to ensure smooth UI operation.
10. You should handle all exceptions with a sensible error message but do not need to handle
them in the GUI (a console log is sufficient)
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