Question

Console yahtzee game-

-using arrays

-ask user if they want to play again

-let user roll 3 times & after first two hold

At the end of the round, it will incremt the round counter + 1.  

Answer 1

Console Yahtzee.java

import java.util.*;

import java.math.*;

class YahtzeeGame {

int num_of_rolls_remaining = 2;

final static int NUM_OF_DICE = 5;

public int rollDice() {

int diceRoll = (int) (Math.random() * 6) + 1;

num_of_rolls_remaining = num_of_rolls_remaining - 1;

return diceRoll;

}

public void testGame() {

System.out.println(NUM_OF_DICE);

for (int i = 0; i < NUM_OF_DICE; i++) {

System.out.println(rollDice());

}

}

}

public class ConsoleYahtzee {

public static void main(String[] args) {

YahtzeeGame game = new YahtzeeGame();

game.testGame();

}

}

Yahtzee game

import java.util.ArrayList;

import acm.io.*;

import acm.program.*;

import acm.util.*;

public class Yahtzee extends GraphicsProgram implements YahtzeeConstants {

/* Private instance variables */

private int nPlayers;

private String[] playerNames;

private YahtzeeDisplay display;

private RandomGenerator rgen = new RandomGenerator();

private int[][] categoryScores;

private int[][] selectedCategories;

private int[] diceArray;

  

public static void main(String[] args) {

new Yahtzee().start(args);

}

public void run() {

setupGame();

  

for (int i = 1; i<=N_SCORING_CATEGORIES; i++) {

for (int j = 1; j<=nPlayers; j++) {

firstRollDice(j);

secondAndThirdRollDice(j);

selectAndSetCategoryScore(j);

}

}

decideWinner();

}

private void setupGame() {

IODialog dialog = getDialog();

nPlayers = dialog.readInt("Enter number of players");

playerNames = new String[nPlayers];

for (int i = 1; i <= nPlayers; i++) {

playerNames[i-1] = dialog.readLine("Enter name for player " + i);

}

display = new YahtzeeDisplay(getGCanvas(), playerNames);

  

categoryScores= new int[nPlayers+1][N_CATEGORIES+1];

selectedCategories = new int[nPlayers+1][N_CATEGORIES+1];

diceArray = new int [N_DICE];

}

private void firstRollDice(int j) {

display.printMessage(playerNames[j-1] + "'s turn. Click 'Roll Dice' button to roll the dice.");

display.waitForPlayerToClickRoll(j);   

for (int l=0; l<N_DICE; l++) { // 5 dice each turn

int diceRollNumber = rgen.nextInt(1,6); // 6 numbers per die

diceArray[l] = diceRollNumber;

}

display.displayDice(diceArray);

}

  

/**Method:

*

* secondAndThirdRollDice

*

* @param j playerNumber

*

*

*/

  

private void secondAndThirdRollDice(int p) {

for (int i = 0; i<2; i++) {  

display.printMessage("Select the dice you wish to re-roll and click 'Roll Again'"); // 3 turns

display.waitForPlayerToSelectDice();

for (int l=0; l<N_DICE; l++) { // 5 dice each turn

int diceRollNumber = rgen.nextInt(1,6); // 6 numbers per die

if (display.isDieSelected(l)) {

diceArray[l] = diceRollNumber;

}

}

display.displayDice(diceArray);

}

}

private void selectAndSetCategoryScore(int playerNumber) {

display.printMessage("Select a Category for this roll.");

int category = display.waitForPlayerToSelectCategory();

if (selectedCategories[playerNumber][category] == 1 || category ==UPPER_SCORE || category == LOWER_SCORE

|| category == TOTAL) {

//display.printMessage("Please choose a new category.");

selectAndSetCategoryScore(playerNumber); // self-referencing loop

}

if (checkCategory(category) == true) {

calculateCategoryScore(category, playerNumber, diceArray);

} else if (checkCategory(category) ==false) {

categoryScores[playerNumber][category] = 0;

}

updateScores(category, playerNumber);

}

  

private void calculateCategoryScore (int category, int playerNumber, int [] diceArray) {

selectedCategories[playerNumber][category] = 1;

int cscore = 0;

  

//Ones through sixes

// Since each category is "named" after the number it represents,

// Multiplying the category name by its occurrences in diceArray yields the score

if (category ==ONES || category ==TWOS || category ==THREES ||

category ==FOURS || category ==FIVES || category ==SIXES) {

int count = 0;   

for (int i = 1; i<=diceArray.length; i++) {

if (diceArray[i-1] == (category)) {

count++;

}

}

cscore = count * category;

}

  

if (category== THREE_OF_A_KIND || category == FOUR_OF_A_KIND || category == CHANCE) {

cscore = sumArray(diceArray);

}

  

// Full house, Small Straight, Large Straight, Yahtzee!

if (category == FULL_HOUSE) cscore = 25;

if (category == SMALL_STRAIGHT) cscore = 30;

if (category == LARGE_STRAIGHT) cscore = 40;

if (category == YAHTZEE) cscore = 50;

  

categoryScores[playerNumber][category] = cscore;

}

/**

* Utility function. Sums all digits in an array.

* Used for both counting scores in 3- or 4- of a kind, and CHANCE.

* Also used for summing total UPPER and LOWER scoreboard. *

* @param array

* @return sum of all digits in array

*/

private int sumArray(int[] array)

{

int sumscore = 0;

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

sumscore += array[i];

}

return sumscore;

}

public static final int UPPER_SCORE = 7;

public static final int UPPER_BONUS = 8;

public static final int LOWER_SCORE = 16;

public static final int TOTAL = 17;

private void updateScores(int category, int playerNumber)

{   

// Individual Category Score

int score = 0;

score = categoryScores[playerNumber][category];

display.updateScorecard(category, playerNumber, score);

  

// Upper Score

int UpperScore = 0;

for (int i = 0; i<UPPER_SCORE; i++) {

UpperScore += categoryScores[playerNumber][i];

}

display.updateScorecard(UPPER_SCORE, playerNumber, UpperScore);

// Lower Score

int LowerScore = 0;

for (int i = 0; i<LOWER_SCORE; i++) {

LowerScore += categoryScores[playerNumber][i];

}

display.updateScorecard(LOWER_SCORE, playerNumber, LowerScore);

  

// Total

int Totalscore = UPPER_SCORE + LOWER_SCORE;

display.updateScorecard(TOTAL, playerNumber, Totalscore);

}

private void decideWinner() {

int highestSoFar = 0;

int winningPlayer=0;

for (int i = 0; i<nPlayers; i++) {

if (highestSoFar < categoryScores[i][TOTAL] ) {

highestSoFar = categoryScores[i][TOTAL];

winningPlayer = i;

}

}

display.printMessage("Congratulations, " + playerNames[winningPlayer] +

"you are the winner with " + categoryScores[winningPlayer][TOTAL] +

" smackaroos.");

}

// Checks the category selection and diceArray to for valid selection.

// Returns score if dice fulfill requirements; otherwise returns 0.

private boolean checkCategory(int category) {

// Ones through Sixes

if (category >=1 && category<=6 || category ==CHANCE) {

return true;

}

// Setup ingenious ArrayLists for diceArray

ArrayList <Integer> ones = new ArrayList <Integer>();  

ArrayList <Integer> twos = new ArrayList <Integer>();

ArrayList <Integer> threes = new ArrayList <Integer>();

ArrayList <Integer> fours = new ArrayList <Integer>();

ArrayList <Integer> fives = new ArrayList <Integer> ();

ArrayList <Integer> sixes = new ArrayList <Integer> ();

  

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

if (diceArray[i] ==1) ones.add(1);

if (diceArray[i] ==2) twos.add(1);

if (diceArray[i] ==3) threes.add(1);

if (diceArray[i] ==4) fours.add(1);

if (diceArray[i] ==5) fives.add(1);

if (diceArray[i] ==6) sixes.add(1);

}

// Three of a kind, Four of a Kind, and Yahtzee (5 of a kind)

if (category ==9 || category==10 || category == 14) {

int itsnec = 0; // iterations necessary to acheive score

if (category == 9) itsnec = 3; // Three of a kind

if (category == 10) itsnec = 4; // Four of a kind

if (category == 14) itsnec = 5; // Five of a kind (Yahtzee!)

  

if (ones.size()>= itsnec || twos.size()>=itsnec || threes.size() >=itsnec

|| fours.size() >=itsnec || fives.size() >=itsnec || sixes.size() >=itsnec) {

return true;

} else { return false; }

}

  

if (category == FULL_HOUSE) {

if ( (ones.size() >=3 || twos.size() >=3 || threes.size() >=3 || // Three of one kind

fours.size() >=3 || fives.size() >=3 || sixes.size() >=3) &&

(ones.size() >=2 || twos.size() >=2 || threes.size() >=2 || // Two of the other

fours.size() >=2 || fives.size() >=2 || sixes.size() >=2)) {

return true;

} else { return false; }

}

if (category == SMALL_STRAIGHT) {

if ( (ones.size()>0 && twos.size()>0 && threes.size()>0 && fours.size()>0) ||

(twos.size()>0 && threes.size()>0 && fours.size()>0 && fives.size()>0) ||

(threes.size()>0 && fours.size()>0 && fives.size()>0 && sixes.size()>0)) {

return true;

} else { return false; }

}

if (category == LARGE_STRAIGHT) {

if ( (ones.size()>0 && twos.size()>0 && threes.size()>0 && fours.size()>0 && fives.size()>0) ||

(twos.size()>0 && threes.size()>0 && fours.size()>0 && fives.size()>0 && sixes.size()>0)) {

return true;

} else { return false; }

}

if (category>13 || category <1) {

throw new Error ("Invalid category passed to checkCategory().");

}

return false;

}

}