Programming Project #1 Solution

Objectives




To apply knowledge of the Comparable interface to a problem



To understand and override the toString and equals methods



Instructions




For this assignment, you will create a GamePiece class, to be used in a variation of the classic “Rock, Paper, Scissors” game. This variation is called “Rock, Paper, Scissors, Lizard, Spock”. A description about how each piece fairs against others is later in this document.







The GamePiece class will contain the following fields:




classification



The classification of the game piece



Valid values are based on an enumerated type, Piece:

Rock



Paper



Scissors



Lizard



Spock



name



The String value of the name, corresponding to the enumerated type



“Rock”, “Paper”, “Scissors”, “Lizard”, or “Spock” are the valid values.



playerName



The name of the person playing (of type String)



Can be any name under 20 characters long



The class will contain the following methods:




GamePiece( )



Constructor – initializes the fields to their default values

Default classification is set to Rock



Default name is set to “Rock”



GamePiece (Piece classification, String name, String playerName)



Constructor – initialize the fields to the values passed in by the client



Getter and setter methods for each of the field names



toString( )
overridden from the Object class



This method should return a string containing a reference to the value in the following, depending on the internal Piece value:

Rock: “I’m hard and have sharp edges.”



Paper: “I’m made of trees and can cover a rock easily.. and disprove Spock!”



Scissors: “I’m extra sharp to cut right through paper… and lizards!”



Lizard: “Hsssss.”



Spock: “It is only logical that you do your CIS 2353 homework.”



equals( )



overridden from the Object class



A GamePiece is “equal” to another GamePiece if their classifications match



compareTo(GamePiece otherPiece)



implemented from the interface Comparable



Specifically, Comparable<GamePiece should be used for the interface o The method returns the following:



-1 is the current game piece object’s classification is less than otherPiece’s classification



0 if the game pieces have the same classification



1 if the current game piece object’s classification is greater than otherPiece’s classification



Winning/Losing

















Piece A


Piece B


Phrase to denote winner


Who wins?






















Rock


Paper


Paper covers rock


Paper








Rock


Scissors
Rock crushes scissors


Rock






Rock


Lizard


Rock crushes lizard


Rock








Rock


Spock
Spock vaporizes rock


Spock






Paper


Scissors


Scissors cuts paper


Scissors








Paper


Lizard
Lizard eats paper


Lizard






Paper


Spock


Paper disproves Spock


Paper








Scissors


Lizard
Scissors decapitates lizard


Scissors






Scissors


Spock


Spock smashes scissors


Spock










Spock Lizard Lizard poisons Spock Lizard
Obviously, if the two pieces are the same, it’s a tie!




Deliverables




Turn in a zipped up folder, containing the Java file(s) required for this project. This includes all relevant classes that are created, as well as the client used to test the class(es) – i.e., the class containing the main method. Upload them to D2L under Dropbox, to the appropriate assignment directory.