Question

The answer should be in JAVA.

You will design and implement two classes to support a client program, RockPaperScissorsGame.java, to simulate Rock-Paper-Scissors game.

Read and understand the client program to find out the requirements for the HandShape and Player classes.

The rules of the Rock-Paper-Scissors game are:

    Scissors✌️ beats Paper✋ that beats Rock✊ that beats Scissors✌️

Additionally, to simplify the game logic (and complexify a little bit the HandSahpe class) , two players cannot show the same hand shape.

The followings are some sample runs:

$java RockPaperScissorsGame
Alice shows Paper
Bob shows Scissors
Bob wins!

$java RockPaperScissorsGame
Alice shows Paper
Bob shows Rock
Alice wins!

$java RockPaperScissorsGame
Alice shows Scissors
Bob shows Rock
Bob wins!

RockPaperScissorsGame.java

public class RockPaperScissorsGame {

        public static void main(String[] args) {
                
                String[] handShapeName = {"Rock", "Paper", "Scissors"};
                
                HandShape handShape = new HandShape();
                
                Player player1 = new Player("Alice");
                Player player2 = new Player("Bob");

                System.out.println(player1.getName() + " shows " + handShapeName[player1.showHand(handShape)]);
                System.out.println(player2.getName() + " shows " + handShapeName[player2.showHand(handShape)]);         
                
                System.out.println(player1.findWinner(player2) + "  wins!");
        }
}

Answer 1

public class RockPaperScissorsGame {

public static void main(String[] args) {
  
String[] handShapeName = {"Rock", "Paper", "Scissors"};
  
HandShape handShape = new HandShape();
  
Player player1 = new Player("Alice");
Player player2 = new Player("Bob");

System.out.println(player1.getName() + " shows " + handShapeName[player1.showHand(handShape)]);
System.out.println(player2.getName() + " shows " + handShapeName[player2.showHand(handShape)]);   
  
System.out.println(player1.findWinner(player2) + " wins!");
}
public class RockPaperScissor {

private Set<Situation> winSituations;

public RockPaperScissor() {

this.winSituations = new HashSet<>();

this.winSituations.add(new Situation("Rock", "Scissor"));
this.winSituations.add(new Situation("Scissor", "Paper"));
this.winSituations.add(new Situation("Paper", "Rock"));

}

public Result evaluateWinner(Situation situation) {

if (this.winSituations.contains(situation)) {
return Result.PLAYER1_WINS;
} else (this.winSituations.contains(situation.invert())) {
return Result.PLAYER2_WINS;
}

}

public static void main(String[] args) {

RockPaperScissor RockPaperScissor = new RockPaperScissor();

System.out.println(RockPaperScissor.evaluateWinner(new Situation("Rock", "Rock")));
System.out.println(RockPaperScissor.evaluateWinner(new Situation("Scissor", "Paper")));
System.out.println(RockPaperScissor.evaluateWinner(new Situation("Rock", "Paper")));

}

}