Rock Paper Scissors Input File: rock-paper-scissors-sample file.txt Rock, paper,

Question

Rock Paper Scissors Input File: rock-paper-scissors-sample file.txt Rock, paper, scissors is a classic childrens game. The rules are simple. At the same time, each person makes a hand representation of a rock, a sheet of paper, or a pair of scissors. Each symbol chosen has a cyclical status of dominance over the over, ie., rock bets scissors, scissors cuts papers, and paper covers rock. If the two players chose the same symbol, it results in a draw Write a program that reads a file with the users input of an "R" for "Rock, a "P for "Paper" and a "S" for "Scissors". You must then determine the winner based upon the rules above. Also, at the end of the series of game, you must present a summary of each user's wins and the number of draws. Sample input: Sample output: Player 1 Player 2 Rock Result: Winner Player 1 Player 1 Player 2 Scissors Summary: Total Number of Games played: XX Player 1 won XX games. Player 2 won XX games. Draws: XX Rock Rock Result: Draw Player 1 Player 2 Paper Scissors Result: Winner Player2

Explanation / Answer

import java.util.Scanner;

public class RockPaperScissors {

   public void startGame() {
       System.out.println("ROCK, PAPER, SCISSORS!");
       Move player1 = user.getMove();
       Move player2 = user.getMove();
       System.out.println(" Player 1 " + player1 + ".");
       System.out.println("Player 2" + player2 + ". ");
       System.out.println("-----------");
   }

   private enum Move {
ROCK, PAPER, SCISSORS
      
       /**
* Compares this move with another move to determining a tie, a win, or
* a loss.
*
* @param otherMove
* move to compare to
* @return 1 if this move beats the other move, -1 if this move loses to
* the other move, 0 if these moves tie
*/
public int compareMoves(Move otherMove) {
// Tie
if (this == otherMove)
return 0;

switch (this) {
case ROCK:
return (otherMove == SCISSORS ? 1 : -1);
case PAPER:
return (otherMove == ROCK ? 1 : -1);
case SCISSORS:
return (otherMove == PAPER ? 1 : -1);
}
      
       if (user.playAgain()) {
           System.out.println();
           startGame();
       } else {
           printGameStats();
       }

// Should never reach here
return 0;
}
}

   private class User {
       private Scanner inputScanner;

       public User() {
           inputScanner = new Scanner(System.in);
       }

       public Move getMove() {
           // Prompt the user
           System.out.print("Rock, paper, or scissors? ");

           // Get the user input
           String userInput = inputScanner.nextLine();
           userInput = userInput.toUpperCase();
           char firstLetter = userInput.charAt(0);
           if (firstLetter == 'R' || firstLetter == 'P' || firstLetter == 'S') {
               // User has entered a valid input
               switch (firstLetter) {
               case 'R':
                   return Move.ROCK;
               case 'P':
                   return Move.PAPER;
               case 'S':
                   return Move.SCISSORS;
               }
           }

           // User has not entered a valid input. Prompt again.
           return getMove();
       }

int compareMoves = player1.compareMoves(player2);
switch(compareMoves)
       {
   case 0: // Tie
       System.out.println("Tie!");
       break;
   case 1: // Player 1 wins
       System.out.println(player1 + " beats " + player2 + ". You won!");
       userScore++;
       break;
   case -1: // Player 2 wins
       System.out.println(player2 + " beats " + player1 + ". You lost.");
       computerScore++;
       break;
}numberOfGames++;
   }

   private User player1;
   private User player2;
   private int userScore;
   private int computerScore;
   private int numberOfGames;

   public RockPaperScissors() {
       player1 = new User();
       player2 = new User();
       player1Score = 0;
       player2Score = 0;
       numberOfGames = 0;
   }

   private void printGameStats() {
       int wins = player1Score;
       int losses = player2Score;
       int ties = numberOfGames - player1Score - player2Score;
       double percentageWon = (wins + ((double) ties) / 2) / numberOfGames;

       // Line
       System.out.print("+");
       printDashes(68);
       System.out.println("+");

       // Print titles
       System.out.printf("| %6s | %6s | %6s | %12s | %14s | ", "WINS", "LOSSES", "TIES", "GAMES PLAYED",
               "PERCENTAGE WON");

       // Line
       System.out.print("|");
       printDashes(10);
       System.out.print("+");
       printDashes(10);
       System.out.print("+");
       printDashes(10);
       System.out.print("+");
       printDashes(16);
       System.out.print("+");
       printDashes(18);
       System.out.println("|");

       // Print values
       System.out.printf("| %6d | %6d | %6d | %12d | %13.2f%% | ", wins, losses, ties, numberOfGames,
               percentageWon * 100);

       // Line
       System.out.print("+");
       printDashes(68);
       System.out.println("+");
   }

   public static void main(String[] args) {
       RockPaperScissors game = new RockPaperScissors();
       game.startGame();
   }
}

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