Question

For your final project you will incorporate all your knowledge of Java that you learned in this class by programming the game of PIG.

The game of Pig is a very simple jeopardy dice game in which two players race to reach 100 points. Each turn, a player repeatedly rolls a die until either a 1 is rolled or the player holds and scores the sum of the rolls (i.e. the turn total). At any time during a player's turn, the player is faced with two decisions:

roll - If the player rolls a

1: the player scores nothing and it becomes the opponent's turn.

2 - 6: the number is added to the player's turn total and the player's turn continues.

hold - The turn total is added to the player's score and it becomes the opponent's turn.

You will be playing against the computer.

Requirements

An algorithm that you outlined – either in Word or in PowerPoint

A menu that explains how the game works.

A main method that allows the use to continue playing or quit.

Contain documentation for users and programmers

Directions on how to play

The use of an array.

The use of an if (else) statement

The use of a while loop

The use of a do while loop

The use of a for loop

Incorporate one class (it can be one we have used before)

Contain a minimum of 5 methods including at least 1 value return method (main should be very short and incorporate these methods)

Program must compile and run

Answer 1

//Java program to simulate a game of Pig

import java.util.Random;

import java.util.Scanner;

public class Pig {

      

       static Scanner scan = new Scanner(System.in);

       // function to return the value on die

       public static int rollDie(Random rand)

       {

            

             return rand.nextInt(6)+1;

       }

      

       // function to determine which player starts the game and determine which player rolls the die next when computer rolls the die

       public static int determineTurn(Random rand)

       {     

             return rand.nextInt(2);

       }

      

       // method to get the user choice to roll again or hold

       public static int getUserChoice()

       {

             int choice;

             do {

                    System.out.println("Press 1 to roll again and 0 to start computer's turn : ");

                    choice = scan.nextInt();

             }while(choice != 0 && choice != 1);

             scan.nextLine();

             return choice;

       }

      

       // method to play one turn

       public static int playOneTurn(int turnChoice, Random rand, int score)

       {

             int die, turnScore=0, choice;

             // its computer's turn

            

             if(turnChoice == 0)

                    System.out.println("\nComputer's turn (current points: "+score+" )" );

             else

                    System.out.println("\nYour turn (current points: "+score+" )" );

            

             do {

                    die = rollDie(rand);

                   

                    if(die == 1)

                    {

                           turnScore = 0;

                           displayTurn(die,turnScore,turnChoice);

                           break;

                    }

                    else {

                           turnScore += die;

                           displayTurn(die,turnScore,turnChoice);

                    }

                    if(turnChoice == 1)

                    {

                           choice = getUserChoice();

                    }else

                           choice = determineTurn(rand);

            

             }while(turnChoice == choice);

            

            

             return (turnScore+score);

       }

      

       // method to display a turn

       public static void displayTurn(int die, int turnScore, int turn)

       {

             if(turn == 0)

                    System.out.println("Computer rolled "+die+" and turn score = "+turnScore);

             else

                    System.out.println("You rolled "+die+" and turn score = "+turnScore);

       }

            

       public static void main(String[] args) {

            

             int scores[] = new int[2];

            

             int turnChoice; // variable storing which player next rolls the die

             Random rand = new Random(); // random generator for die1 and determineTurn

             String choice;

            

             do

             {

                    for(int i=0;i<scores.length;i++)

                           scores[i] = 0;

                    turnChoice = determineTurn(rand); // initially determine who will roll the die  

                    while(scores[0]<100 && scores[1] <100)

                    {

                          

                           if(turnChoice == 0)

                           {

                                 scores[0] = playOneTurn(turnChoice,rand,scores[0]);

                                 System.out.println("Computer's score = "+scores[0]);

                                 turnChoice = 1;

                           }else

                           {

                                 scores[1] = playOneTurn(turnChoice,rand,scores[1]);

                                 System.out.println("Your score = "+scores[1]);

                                 turnChoice = 0;

                           }

                          

                    }

                   

                    if(scores[0] == 100)

                           System.out.println("Computer Won");

                    else

                           System.out.println("You Won");

                    System.out.println("\nDo you want to play again ? (y/n) ");

                    choice = scan.nextLine();

             }while(choice.equalsIgnoreCase("y"));

            

       }

}

//end of program

Output:

Your turn (current points: 0) You rolled 1 and turn score0 Your score0 Computer's turn (current points: 0 Computer rolled 4 and turn score 4 Computer's score 4 Your turn (current points: 0) You rolled 6 and turn score6 Press 1 to roll again and 0 to start computer's turn You rolled 4 and turn score 10 Press 1 to roll again and 0 to start computer's turn Your score 10 Computer's turn (current points: 4 ) Computer rolled 4 and turn score- 4 Computer's score8 Your turn (current points: 10) You rolled 2 and turn score 2 Press 1 to roll again and 0 to start computer's turn You rolled 6 and turn score8 Press 1 to roll again and 0 to start computer's turn You rolled 1 and turn score0 Your score 10 Computer's turn (current points: 8) Computer rolled 4 and turn score 4 Computer rolled 2 and turn score6 Computer's score 14

Your turn (current points: 72 You rolled 5 and turn score- 5 Press 1 to roll again and 0 to start computer's turn You rolled 4 and turn score9 Press 1 to roll again and 0 to start computer's turn : You rolled 5 and turn score14 Press 1 to roll again and 0 to start computer's turn: You rolled 4 and turn score18 Press 1 to roll again and 0 to start computer's turn Your score = 90 Computer's turn (current points: 70 Computer rolled 3 and turn score = 3 Computer rolled 6 and turn score - 9 Computer rolled 5 and turn score 14 Computer's score - 84 Your turn (current points: 90) You rolled 3 and turn score = 3 Press 1 to roll again and 0 to start computer's turn You rolled 3 and turn score = 6 Press 1 to roll again and 0 to start computer's turn You rolled 2 and turn score8 Press 1 to roll again and 0 to start computer's turn : Your score 98 Computer's turn (current points: 84 Computer rolled 6 and turn score6 Computer rolled 5 and turn score 1! Computer rolled 5 and turn score- 16 Computer's score- 100 Computer Won Do you want to play again ? (y/n)