Pig the dice game

Pig the dice game
You are encouraged to solve this task according to the task description, using any language you may know.

The game of Pig is a multiplayer game played with a single six-sided die. The object of the game is to reach 100 points or more. Play is taken in turns. On each person's turn that person has the option of either

1. Rolling the dice: where a roll of two to six is added to their score for that turn and the player's turn continues as the player is given the same choice again; or a roll of 1 loses the player's total points for that turn and their turn finishes with play passing to the next player.
2. Holding: The player's score for that round is added to their total and becomes safe from the effects of throwing a one. The player's turn finishes with play passing to the next player.

Task goal

The goal of this task is to create a program to score for, and simulate dice throws for, a two-person game.

Cf

• Pig the dice game/Player

ActionScript

<lang ActionScript> package {

   import flash.display.Graphics;
   import flash.display.Shape;
   import flash.display.Sprite;
   import flash.events.Event;
   import flash.events.MouseEvent;
   import flash.text.TextField;
   import flash.text.TextFieldAutoSize;
   import flash.text.TextFieldType;
   import flash.text.TextFormat;
   import flash.utils.ByteArray;

   public class PigTheDiceGame extends Sprite {
       
       /**
        * The name of the first player.
        * 
        * @private
        */
       private var _name1:String = "Player 1";
       
       /**
        * The name of the second player.
        * 
        * @private
        */
       private var _name2:String = "Player 2";
       
       /**
        * True if the next turn is of the second player, flase if it is of the first player.
        * 
        * @private
        */
       private var _isPlayer2:Boolean = false;
       
       /**
        * The score of the first player.
        * 
        * @private
        */
       private var __p1Score:uint;
       
       /**
        * The score of the second player.
        * 
        * @private
        */
       private var __p2Score:uint;
       
       /**
        * The number of points in the current turn.
        * 
        * @private
        */
       private var __turnPts:uint;
       
       /**
        * The text field displaying the score of the first player.
        * 
        * @private
        */
       private var _p1ScoreText:TextField;
       
       /**
        * The text field displaying the score of the second player.
        * 
        * @private
        */
       private var _p2ScoreText:TextField;
       
       /**
        * The button which must be clicked for a player to roll the dice.
        * 
        * @private
        */
       private var _rollButton:Sprite;
       
       /**
        * The button which must be clicked for a player to hold.
        * 
        * @private
        */
       private var _holdButton:Sprite;
       
       /**
        * The text field displaying the name of the current player.
        */
       private var _currentPlayerText:TextField;
       
       /**
        * The text field displaying the number of points in the current turn.
        * 
        * @private
        */
       private var _ptsThisTurnText:TextField;
       
       /**
        * The dice.
        * 
        * @private
        */
       private var _dice:Shape;
       
       /**
        * The number of points required to win the game.
        * 
        * @private
        */
       private var _maxScore:uint = 100;
       
       /**
        * The text field displaying additional information about the game.
        */
       private var _statusText:TextField;
       
       /**
        * Creates a new PigTheDiceGame instance.
        */
       public function PigTheDiceGame() {
           if ( stage ) _init();
           else addEventListener(Event.ADDED_TO_STAGE, _init);
       }
       
       /**
        * Function which constructs the dice game when the object is added to the stage.
        */
       private function _init(e:Event = null):void {
           
           // Border and background
           
           graphics.beginFill(0xFFFFDD);
           graphics.lineStyle(2, 0xFFCC00);
           graphics.drawRect(0, 0, 450, 280)
           
           x = 20;
           y = 20;
           
           // Text fields and labels
           
           var currentPlayerText:TextField = _createTextField(_name1 + "'s turn", 20, 0, 10, 0xDD0000, TextFieldAutoSize.CENTER, width);
           var p1ScoreLabel:TextField = _createTextField(_name1 + "'s score:", 15, 20, currentPlayerText.y + currentPlayerText.height + 20, 0x000000, TextFieldAutoSize.LEFT, 120);
           var p1ScoreText:TextField = _createTextField("0", 17, 135, p1ScoreLabel.y, 0xFF0000, TextFieldAutoSize.RIGHT, 50);
           var p2ScoreLabel:TextField = _createTextField(_name2 + "'s score:", 15, 20, p1ScoreText.y + p1ScoreText.height + 5, 0x000000, TextFieldAutoSize.LEFT, 120);
           var p2ScoreText:TextField = _createTextField("0", 17, 135, p2ScoreLabel.y, 0xFF0000, TextFieldAutoSize.RIGHT, 50);
           var ptsThisTurnLabel:TextField = _createTextField("Points in this turn:", 15, 20, p2ScoreText.y + p2ScoreText.height + 15, 0x000000, TextFieldAutoSize.LEFT, 120);
           var ptsThisTurnText:TextField = _createTextField("0", 17, 135, ptsThisTurnLabel.y, 0xFF0000, TextFieldAutoSize.RIGHT, 50);
           
           // Dice
           
           var dice:Shape = new Shape();
           dice.x = 201;
           dice.y = ptsThisTurnText.y + ptsThisTurnText.height + 30;
           dice.visible = false;
           
           var statusText:TextField = _createTextField("Start Play!", 15, 0, dice.y + 70, 0x0000A0, TextFieldAutoSize.CENTER, 450);
           
           // "Roll" button
           
           var rollButton:Sprite = new Sprite();
           var rollButtonText:TextField = _createTextField("Roll dice", 17, 0, 0, 0x000000, TextFieldAutoSize.CENTER, 100);
           rollButton.mouseChildren = false;
           rollButton.buttonMode = true;
           rollButton.graphics.lineStyle(1, 0x444444);
           rollButton.graphics.beginFill(0xDDDDDD);
           rollButton.graphics.drawRect(0, 0, 100, rollButtonText.height);
           rollButton.x = 330;
           rollButton.y = 80;
           rollButton.addChild(rollButtonText);
           
           // "Hold" button
           
           var holdButton:Sprite = new Sprite();
           var holdButtonText:TextField = _createTextField("Hold", 17, 0, 0, 0x000000, TextFieldAutoSize.CENTER, 100);
           holdButton.mouseChildren = false;
           holdButton.buttonMode = true;
           holdButton.graphics.copyFrom(rollButton.graphics);
           holdButton.x = 330;
           holdButton.y = rollButton.y + rollButton.height + 10;
           holdButton.addChild(holdButtonText);
           
           rollButton.addEventListener(MouseEvent.CLICK, _rollButtonClick);
           holdButton.addEventListener(MouseEvent.CLICK, _holdButtonClick);
           
           _currentPlayerText = currentPlayerText;
           _p1ScoreText = p1ScoreText;
           _p2ScoreText = p2ScoreText;
           _ptsThisTurnText = ptsThisTurnText;
           _rollButton = rollButton;
           _holdButton = holdButton;
           _dice = dice;
           _statusText = statusText;
           
           addChild(currentPlayerText);
           addChild(p1ScoreLabel);
           addChild(p1ScoreText);
           addChild(p2ScoreLabel);
           addChild(p2ScoreText);
           addChild(ptsThisTurnLabel);
           addChild(ptsThisTurnLabel);
           addChild(ptsThisTurnText);
           addChild(statusText);
           addChild(_dice);
           addChild(rollButton);
           addChild(holdButton);
           
       }
       
       /**
        * Creates a new text field.
        * 
        * @param text The text to be displayed in the text field.
        * @param size The font size of the text.
        * @param x The x-coordinate of the text field.
        * @param y The y-coordinate of the text field.
        * @param colour The text colour.
        * @param autoSize The text alignment mode.
        * @param width The width of the text field.
        * @return A TextField object.
        * @private
        */
       private function _createTextField(text:String, size:Number, x:Number, y:Number, colour:uint, autoSize:String, width:Number):TextField {
           var t:TextField = new TextField();
           t.defaultTextFormat = new TextFormat(null, size, colour);
           t.autoSize = autoSize;
           t.x = x;
           t.y = y;
           t.width = width;
           t.text = text;
           t.height = t.textHeight + 5;
           return t;
       }
       
       /**
        * Rolls the dice.
        * 
        * @return The result of the roll (1-6)
        */
       private function _rollDice():uint {
           
           // Since Math.random() returns a number between 0 and 1, multiplying it by 6 and then rounding down
           // gives a number between 0 and 5, so add 1 to it.
           
           var roll:uint = uint(Math.random() * 6) + 1;
           
           _dice.visible = true;
           var diceGraphics:Graphics = _dice.graphics;
           
           // Draw the dice.
           
           diceGraphics.clear();
           diceGraphics.lineStyle(2, 0x555555);
           diceGraphics.beginFill(0xFFFFFF);
           diceGraphics.drawRect(0, 0, 48, 48);
           diceGraphics.beginFill(0x000000);
           diceGraphics.lineStyle(0);
           
           switch ( roll ) {
               case 1:
                   diceGraphics.drawCircle(24, 24, 3);
                   break;
               case 2:
                   diceGraphics.drawCircle(16, 16, 3);
                   diceGraphics.drawCircle(32, 32, 3);
                   break;
               case 3:
                   diceGraphics.drawCircle(12, 12, 3);
                   diceGraphics.drawCircle(24, 24, 3);
                   diceGraphics.drawCircle(36, 36, 3);
                   break;
               case 4:
                   diceGraphics.drawCircle(16, 16, 3);
                   diceGraphics.drawCircle(16, 32, 3);
                   diceGraphics.drawCircle(32, 16, 3);
                   diceGraphics.drawCircle(32, 32, 3);
                   break;
               case 5:
                   diceGraphics.drawCircle(12, 12, 3);
                   diceGraphics.drawCircle(24, 24, 3);
                   diceGraphics.drawCircle(36, 36, 3);
                   diceGraphics.drawCircle(36, 12, 3);
                   diceGraphics.drawCircle(12, 36, 3);
                   break;
               case 6:
                   diceGraphics.drawCircle(16, 12, 3);
                   diceGraphics.drawCircle(16, 24, 3);
                   diceGraphics.drawCircle(16, 36, 3);
                   diceGraphics.drawCircle(32, 12, 3);
                   diceGraphics.drawCircle(32, 24, 3);
                   diceGraphics.drawCircle(32, 36, 3);
                   break;
           }
           
           return roll;
           
       }
       
       /**
        * The score of the first player.
        * 
        * @private
        */
       private function get _p1Score():uint {
           return __p1Score;
       }
       
       /**
        * @private
        */
       private function set _p1Score(value:uint):void {
           __p1Score = value;
           _p1ScoreText.text = String(value);
           
           if ( value >= 100 ) {
               _currentPlayerText.text = "Game over!";
               _statusText.text = _name1 + " wins!";
               removeChild(_rollButton);
               removeChild(_holdButton);
           }
       }
       
       /**
        * The score of the second player.
        * 
        * @private
        */
       private function get _p2Score():uint {
           return __p2Score;
       }
       
       /**
        * @private
        */
       private function set _p2Score(value:uint):void {
           __p2Score = value;
           _p2ScoreText.text = String(value);
           
           if ( value >= 100 ) {
               _currentPlayerText.text = "Game over!";
               _statusText.text = _name2 + " wins!";
               removeChild(_rollButton);
               removeChild(_holdButton);
           }
       }
       
       /**
        * The number of points in the current turn.
        * 
        * @private
        */
       private function get _turnPts():uint {
           return __turnPts;
       }
       
       /**
        * @private
        */
       private function set _turnPts(value:uint):void {
           __turnPts = value;
           _ptsThisTurnText.text = String(value);
           
           if ( _isPlayer2 && __p2Score + value >= _maxScore ) {
               _ptsThisTurnText.text = "0";
               _p2Score += value;
           }
           else if ( ! _isPlayer2 && __p1Score + value >= _maxScore ) {
               _ptsThisTurnText.text = "0";
               _p1Score += value;
           }
       }
       
       /**
        * Function called when the "Roll dice" button is clicked.
        * 
        * @private
        */
       private function _rollButtonClick(e:MouseEvent):void {
           var roll:uint = _rollDice();
           
           if ( roll == 1 ) {
               if ( _isPlayer2 ) {
                   _currentPlayerText.text = _name1 + "'s turn";
                   _statusText.text = _name2 + " rolls 1 and loses " + __turnPts + " points. " + _name1 + "'s turn now.";
               }
               else {
                   _currentPlayerText.text = _name2 + "'s turn";
                   _statusText.text = _name1 + " rolls 1 and loses " + __turnPts + " points. " + _name2 + "'s turn now.";
               }
               
               _isPlayer2 = ! _isPlayer2;
               _turnPts = 0;
           }
           else {
               _turnPts += roll;
               _statusText.text = "";
           }
       }
       
       /**
        * Function called when the "Hold" button is clicked.
        * 
        * @private
        */
       private function _holdButtonClick(e:MouseEvent):void {
           if ( _isPlayer2 ) {
               _currentPlayerText.text = _name1 + "'s turn";
               _statusText.text = _name2 + " holds and wins " + __turnPts + " points. " + _name1 + "'s turn now.";
               _p2Score += __turnPts;
           }
           else {
               _currentPlayerText.text = _name2 + "'s turn";
               _statusText.text = _name1 + " holds and wins " + __turnPts + " points. " + _name2 + "'s turn now.";
               _p1Score += __turnPts;
           }
           
           _dice.visible = false;
           _turnPts = 0;
           _isPlayer2 = ! _isPlayer2;
       }

   }

} </lang>

Ada

Uses Ada 2012.

The Package Pig

We first define a package Pig, which we also use in the player task Pig the dice game/Player.

Essentially, this package specifies two classes: Player provides the record keeping of the player's score saved so far, the points accumulated in the current round that may be added to the score, and the most recent roll. Actor is an abstract class to model the decision of rolling the dice once more or to save the current points into the score.

Also, there is a procedure Play to play the game, following whatever the actors do.

<lang Ada>package Pig is

  type Dice_Score is range 1 .. 6;
  
  type Player is tagged private; 
  function Recent(P: Player) return Natural;
  function All_Recent(P: Player) return Natural;
  function Score(P: Player) return Natural;
  
  type Actor is abstract tagged null record;
  function Roll_More(A: Actor; Self, Opponent: Player'Class) 

return Boolean is abstract;

  procedure Play(First, Second: Actor'Class; First_Wins: out Boolean);
  

private

  type Player is tagged record
     Score: Natural := 0;
     All_Recent: Natural := 0;
     Recent_Roll: Dice_Score := 1;
  end record;

end Pig;</lang>

The implementation of Pig is as follows:

<lang Ada>with Ada.Numerics.Discrete_Random; package body Pig is

  function Score(P: Player) return Natural is (P.Score);
  function All_Recent(P: Player) return Natural is (P.All_Recent);
  function Recent(P: Player) return Natural is (Natural(P.Recent_Roll));
  function Has_Won(P: Player) return Boolean is (P.Score >= 100);
  
  package RND is new Ada.Numerics.Discrete_Random(Dice_Score);
  Gen: RND.Generator; 

  procedure Roll(P: in out Player) is
  begin
     P.Recent_Roll := RND.Random(Gen);
     if P.Recent = 1 then 

P.All_Recent := 0;

     else

P.All_Recent := P.All_Recent + P.Recent;

     end if;
  end Roll;
  
  procedure Add_To_Score(P: in out Player) is
  begin
     P.Score := P.Score + P.All_Recent;
     P.All_Recent := 0;
  end Add_To_Score;
  
  procedure Play(First, Second: Actor'Class; 

First_Wins: out Boolean) is

     P1, P2: Player;
  begin
     loop

Roll(P1); while First.Roll_More(P1, P2) and then P1.Recent > 1 loop Roll(P1); end loop; Add_To_Score(P1); exit when P1.Score >= 100; Roll(P2); while Second.Roll_More(P2, P1) and then P2.Recent > 1 loop Roll(P2); end loop; Add_To_Score(P2); exit when P2.Score >= 100;

     end loop;
     First_Wins := P1.Score >= 100;
  end Play;
  

begin

  RND.Reset(Gen);

end Pig;</lang>

Solving the Task

Now, to actually play the game, we need a procedure Play_Pig. Mainly, we derive a class Hand from the class Actor to implement manually playing the game.

<lang Ada>with Pig, Ada.Text_IO;

procedure Play_Pig is

  use Pig;
  
  type Hand is new Actor with record
     Name: String(1 .. 5);
  end record;
  function Roll_More(A: Hand; Self, Opponent: Player'Class) return Boolean;
  
  function Roll_More(A: Hand; Self, Opponent: Player'Class) return Boolean is
     Ch: Character := ' ';
     use Ada.Text_IO;
  begin
     Put(A.Name & " you:" & Natural'Image(Self.Score) &
           " (opponent:" & Natural'Image(Opponent.Score) &
           ") this round:" & Natural'Image(Self.All_Recent) &
           " this roll:" & Natural'Image(Self.Recent) &
           ";  add to score(+)?");
     Get(Ch);
     return Ch /= '+';
  end Roll_More;
  
  A1: Hand := (Name => "Alice");
  A2: Hand := (Name => "Bob  ");
  
  Alice: Boolean;

begin

  Play(A1, A2, Alice);
  Ada.Text_IO.Put_Line("Winner = " & (if Alice then "Alice!" else "Bob!"));

end Play_Pig;</lang>

Output:

Alice you: 0 (opponent: 0) this round: 3 this roll: 3;  add to score(+)? 
Alice you: 0 (opponent: 0) this round: 5 this roll: 2;  add to score(+)? 
Alice you: 0 (opponent: 0) this round: 10 this roll: 5;  add to score(+)? 
Alice you: 0 (opponent: 0) this round: 13 this roll: 3;  add to score(+)?+
Bob   you: 0 (opponent: 13) this round: 6 this roll: 6;  add to score(+)? 
Bob   you: 0 (opponent: 13) this round: 8 this roll: 2;  add to score(+)? 
Bob   you: 0 (opponent: 13) this round: 11 this roll: 3;  add to score(+)? 
Bob   you: 0 (opponent: 13) this round: 16 this roll: 5;  add to score(+)? 
Bob   you: 0 (opponent: 13) this round: 18 this roll: 2;  add to score(+)? 
Bob   you: 0 (opponent: 13) this round: 20 this roll: 2;  add to score(+)?+
Alice you: 13 (opponent: 20) this round: 2 this roll: 2;  add to score(+)?

... lots of more lines ...

Alice you: 76 (opponent: 66) this round: 8 this roll: 5;  add to score(+)? 
Alice you: 76 (opponent: 66) this round: 13 this roll: 5;  add to score(+)?+
Bob   you: 66 (opponent: 89) this round: 4 this roll: 4;  add to score(+)? 
Bob   you: 66 (opponent: 89) this round: 7 this roll: 3;  add to score(+)? 
Bob   you: 66 (opponent: 89) this round: 12 this roll: 5;  add to score(+)? 
Bob   you: 66 (opponent: 89) this round: 15 this roll: 3;  add to score(+)? 
Bob   you: 66 (opponent: 89) this round: 21 this roll: 6;  add to score(+)? 
Bob   you: 66 (opponent: 89) this round: 0 this roll: 1;  add to score(+)? 
Alice you: 89 (opponent: 66) this round: 6 this roll: 6;  add to score(+)? 
Alice you: 89 (opponent: 66) this round: 11 this roll: 5;  add to score(+)?+
Winner = Alice!

C++

<lang cpp>

1. include <windows.h>
2. include <iostream>
3. include <string>

//-------------------------------------------------------------------------------------------------- using namespace std;

//-------------------------------------------------------------------------------------------------- const int PLAYERS = 2, MAX_POINTS = 100;

//-------------------------------------------------------------------------------------------------- class player { public:

   player() { reset(); }
   void reset()
   {

name = ""; current_score = round_score = 0;

   }
   string getName()             { return name; }
   void setName( string n )     { name = n; }
   int getCurrScore()           { return current_score; }
   void addCurrScore()          { current_score += round_score; }
   int getRoundScore()          { return round_score; }
   void addRoundScore( int rs ) { round_score += rs; }
   void zeroRoundScore()        { round_score = 0; }

private:

   string name;
   int current_score, round_score;

}; //-------------------------------------------------------------------------------------------------- class pigGame { public:

   pigGame() { resetPlayers(); }

   void play()
   {

while( true ) { system( "cls" ); int p = 0; while( true ) { if( turn( p ) ) { praise( p ); break; }

++p %= PLAYERS; }

string r; cout << "Do you want to play again ( y / n )? "; cin >> r; if( r != "Y" && r != "y" ) return; resetPlayers(); }

   }

private:

   void resetPlayers()
   {

system( "cls" ); string n; for( int p = 0; p < PLAYERS; p++ ) { _players[p].reset(); cout << "Enter name player " << p + 1 << ": "; cin >> n; _players[p].setName( n ); }

   }

   void praise( int p )
   {

system( "cls" ); cout << "CONGRATULATIONS " << _players[p].getName() << ", you are the winner!" << endl << endl; cout << "Final Score" << endl; drawScoreboard(); cout << endl << endl;

   }

   void drawScoreboard()
   {

for( int p = 0; p < PLAYERS; p++ ) cout << _players[p].getName() << ": " << _players[p].getCurrScore() << " points" << endl; cout << endl;

   }

   bool turn( int p )
   {

system( "cls" ); drawScoreboard(); _players[p].zeroRoundScore(); string r; int die; while( true ) { cout << _players[p].getName() << ", your round score is: " << _players[p].getRoundScore() << endl; cout << "What do you want to do (H)old or (R)oll? "; cin >> r; if( r == "h" || r == "H" ) { _players[p].addCurrScore(); return _players[p].getCurrScore() >= MAX_POINTS; } if( r == "r" || r == "R" ) { die = rand() % 6 + 1; if( die == 1 ) { cout << _players[p].getName() << ", your turn is over." << endl << endl; system( "pause" ); return false; } _players[p].addRoundScore( die ); } cout << endl; } return false;

   }

   player	_players[PLAYERS];

}; //-------------------------------------------------------------------------------------------------- int main( int argc, char* argv[] ) {

   srand( GetTickCount() );
   pigGame pg;
   pg.play();
   return 0;

} //-------------------------------------------------------------------------------------------------- </lang> Output:

Chuck: 14 points
Bob: 16 points

Chuck, your round score is: 0
What do you want to do (H)old or (R)oll? r

Chuck, your round score is: 6
What do you want to do (H)old or (R)oll? r

Chuck, your round score is: 11
What do you want to do (H)old or (R)oll? r

Chuck, your round score is: 16
What do you want to do (H)old or (R)oll?

Common Lisp

<lang lisp>(defconstant +max-score+ 100) (defconstant +n-of-players+ 2)

(let ((scores (make-list +n-of-players+ :initial-element 0))

     (current-player 0)
     (round-score 0))
 (loop
    (format t "Player ~d: (~d, ~d). Rolling? (Y)"
            current-player
            (nth current-player scores)
            round-score)
    (if (member (read-line) '("y" "yes" "") :test #'string=)
        (let ((roll (1+ (random 6))))
          (format t "~tRolled ~d~%" roll)
          (if (= roll 1)
              (progn
                (format t
                        "~tBust! you lose ~d but still keep your previous ~d~%"
                        round-score (nth current-player scores))
                (setf round-score 0)
                (setf current-player
                      (mod (1+ current-player) +n-of-players+)))
              (incf round-score roll)))
        (progn
          (incf (nth current-player scores) round-score)
          (setf round-score 0)
          (when (>= (apply #'max scores) 100)
            (return))
          (format t "~tSticking with ~d~%" (nth current-player scores))
          (setf current-player (mod (1+ current-player) +n-of-players+)))))
 (format t "~%Player ~d wins with a score of ~d~%" current-player
         (nth current-player scores)))</lang>

Output:

Player 0: (0, 0). Rolling? (Y)
 Rolled 5
Player 0: (0, 5). Rolling? (Y)
 Rolled 6
Player 0: (0, 11). Rolling? (Y)n
 Sticking with 11
Player 1: (0, 0). Rolling? (Y)
 Rolled 4
Player 1: (0, 4). Rolling? (Y)
 Rolled 3
Player 1: (0, 7). Rolling? (Y)
 Rolled 6
Player 1: (0, 13). Rolling? (Y)n
 Sticking with 13
...
Player 0: (81, 0). Rolling? (Y)
 Rolled 2
Player 0: (81, 2). Rolling? (Y)
 Rolled 2
Player 1: (85, 0). Rolling? (Y)
 Rolled 3
Player 1: (85, 3). Rolling? (Y)
 Rolled 3
Player 1: (85, 6). Rolling? (Y)
 Rolled 5
Player 1: (85, 11). Rolling? (Y)
 Rolled 6
Player 1: (85, 17). Rolling? (Y)n

Player 1 wins with a score of 102

D

Translation of: Python

<lang d>import std.stdio, std.string, std.algorithm, std.random;

void main() {

   enum maxScore = 100;
   enum playerCount = 2;
   immutable confirmations = ["yes", "y", ""];

   int[playerCount] safeScore;
   int player, score;

   while (true) {
       writef(" Player %d: (%d, %d). Rolling? (y/n) ", player,
              safeScore[player], score);
       if (safeScore[player] + score < maxScore &&
           confirmations.canFind(readln().strip().toLower())) {
           immutable int rolled = uniform(1, 7);
           writefln(" Rolled %d", rolled);
           if (rolled == 1) {
               writefln(" Bust! You lose %d but keep %d\n",
                        score, safeScore[player]);
           } else {
               score += rolled;
               continue;
           }
       } else {
           safeScore[player] += score;
           if (safeScore[player] >= maxScore)
               break;
           writefln(" Sticking with %d\n", safeScore[player]);
       }

       score = 0;
       player = (player + 1) % playerCount;
   }

   writefln("\n\nPlayer %d wins with a score of %d",
            player, safeScore[player]);

}</lang>

Output:

 Player 0: (0, 0). Rolling? (y/n) 
   Rolled 6
 Player 0: (0, 6). Rolling? (y/n) 
   Rolled 5
 Player 0: (0, 11). Rolling? (y/n) 
   Rolled 1
 Bust! you lose 11 but keep 0

 Player 1: (0, 0). Rolling? (y/n) 
   Rolled 3
 Player 1: (0, 3). Rolling? (y/n) 
   Rolled 4
 Player 1: (0, 7). Rolling? (y/n) 
   Rolled 6
 Player 1: (0, 13). Rolling? (y/n) n
 Sticking with 13

 ...

 Player 0: (88, 0). Rolling? (y/n) 
   Rolled 6
 Player 0: (88, 6). Rolling? (y/n) 
   Rolled 4
 Player 0: (88, 10). Rolling? (y/n) 
   Rolled 3
 Player 0: (88, 13). Rolling? (y/n)

 Player 0 wins with a score of 101

Forth

Works with: 4tH version 3.62.1

<lang forth>include lib/choose.4th include lib/yesorno.4th

turn ( n1 -- n2)

 ." Player " . ." is up" cr           \ which player is up
 0 begin                              \ nothing so far
   s" Rolling" yes/no?                \ stand or roll?
 while                                \ now roll the dice
   6 choose 1+ dup ." Rolling " . dup 1 =
   if drop drop 0 else + ." (" dup 0 .r ." )" then cr dup 0=
 until                                \ until player stands or 1 is rolled

pigthedice ( --)

 2 0 1 over                           \ setup players
 begin over turn + dup ." Total score: " . cr cr dup 100 < while 2swap repeat
 ." Player " swap . ." won with " . ." points." cr
 ." Player " swap . ." lost with " . ." points." cr

\ show the results

pigthedice</lang>

Groovy

Currently hard coded for 2 players, but will work for multiple players <lang Groovy> class PigDice {

final static int maxScore = 100; final static yesses = ["yes", "y", "", "Y", "YES"]

static main(args) { def playersCount = 2 Scanner sc = new Scanner(System.in) Map scores = [:] def current = 0 def player = 0 def gameOver = false def firstThrow = true Random rnd = new Random()

// Initialise the players' scores (0..(playersCount-1)).each{ it-> scores[it] = 0 }

// Game starts while (!gameOver) { def nextPlayer = false String ln

// Automatic rolls for the first dice roll if (firstThrow){ println "player ${player+1} Auto Rolling... " ln = 'y' firstThrow = false } else { println "player ${player+1} Rolling? Yes(y) or No(n) " ln = sc.nextLine() }

if (ln in yesses){ // if yes then roll the dice int rolled = rnd.nextInt(6) + 1 print "The Roll was $rolled --- "

if (rolled == 1) { println " Bust! Player ${player+1} loses $current but keep ${scores[player]}" current = 0 nextPlayer = true firstThrow = true } else { // dice rolls 2 to 6 current = current + rolled if ((current + scores[player]) > maxScore){ gameOver = true }else{ // as a session score gets larger the message returned changes switch (current){ case 6..15: print "Good. " break case 15..29: print "lucky! " break case 29..39: print "Great! " break default: print "Amazing " } println "Player ${player+1} now has $current this session (possible score of ${current + scores[player]})" } } } else{ // if no then bank the session score nextPlayer = true firstThrow = true scores[player] = scores[player] + current current = 0 println "chicken! player ${player+1} now has ${scores[player]} and $gameOver" println "Current scores :" for (i in scores){ println "player ${i.key + 1}| ${i.value} " } println "------------------------------"

} println ""

if (nextPlayer) { player = (player+1)%playersCount println "** Next player is ${player+1}" } }

// Game ends println "Player ${player+1} wins" } } </lang>

J

<lang j>require'misc'

status=:3 :0

 'pid cur tot'=. y
  player=. 'player ',":pid
  potential=. ' potential: ',":cur
  total=. ' total: ',":tot
 smoutput player,potential,total

)

getmove=:3 :0

 whilst.1~:+/choice do.
   choice=.'HRQ' e. prompt '  Roll the dice or Hold or Quit? [R or H or Q]: '
 end.
 choice#'HRQ'

)

NB. simulate an y player game of pig pigsim=:3 :0

 smoutput (":y),' player game of pig'
 scores=.y#0
 while.100>>./scores do.
   for_player.=i.y do.
     pid=.1+I.player
     smoutput 'begining of turn for player ',":pid
     current=. 0
     whilst. (1 ~: roll) *. 'R' = move do.
       status pid, current, player+/ .*scores
       move=. getmove
       roll=. 1+?6
       if.'R'=move do.
         smoutput 'rolled a ',":roll
         current=. (1~:roll)*current+roll
       end.
     end.
     scores=. scores+(current*player)+100*('Q'e.move)*-.player
     smoutput 'player scores now: ',":scores
   end.
 end.
 smoutput 'player ',(":1+I.scores>:100),' wins'

)</lang>

Example game:

<lang> pigsim 2 2 player game of pig begining of turn for player 1 player 1 potential: 0 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 3 player 1 potential: 3 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 6 player 1 potential: 9 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 4 player 1 potential: 13 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 6 player 1 potential: 19 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 2 player 1 potential: 21 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: H

player scores now: 21 0 begining of turn for player 2 player 2 potential: 0 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 3 player 2 potential: 3 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 6 player 2 potential: 9 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 4 player 2 potential: 13 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 6 player 2 potential: 19 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 3 player 2 potential: 22 total: 0

 Roll the dice or Hold or Quit? [R or H or Q]: H

player scores now: 21 22 begining of turn for player 1 player 1 potential: 0 total: 21

 Roll the dice or Hold or Quit? [R or H or Q]: R

...

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 6 player 1 potential: 22 total: 62

 Roll the dice or Hold or Quit? [R or H or Q]: H

player scores now: 84 90 begining of turn for player 2 player 2 potential: 0 total: 90

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 6 player 2 potential: 6 total: 90

 Roll the dice or Hold or Quit? [R or H or Q]: R

rolled a 6 player 2 potential: 12 total: 90

 Roll the dice or Hold or Quit? [R or H or Q]: H

player scores now: 84 102 player 2 wins</lang>

Java

Translation of: D

<lang java>import java.util.*;

public class PigDice {

   public static void main(String[] args) {
       final int maxScore = 100;
       final int playerCount = 2;
       final String[] yesses = {"y", "Y", ""};

       int[] safeScore = new int[2];
       int player = 0, score = 0;

       Scanner sc = new Scanner(System.in);
       Random rnd = new Random();

       while (true) {
           System.out.printf(" Player %d: (%d, %d) Rolling? (y/n) ", player,
                   safeScore[player], score);
           if (safeScore[player] + score < maxScore
                   && Arrays.asList(yesses).contains(sc.nextLine())) {
               final int rolled = rnd.nextInt(6) + 1;
               System.out.printf(" Rolled %d\n", rolled);
               if (rolled == 1) {
                   System.out.printf(" Bust! You lose %d but keep %d\n\n",
                           score, safeScore[player]);
               } else {
                   score += rolled;
                   continue;
               }
           } else {
               safeScore[player] += score;
               if (safeScore[player] >= maxScore)
                   break;
               System.out.printf(" Sticking with %d\n\n", safeScore[player]);
           }
           score = 0;
           player = (player + 1) % playerCount;
       }
       System.out.printf("\n\nPlayer %d wins with a score of %d",
               player, safeScore[player]);
   }

}</lang>

Works with: Java version 8+

<lang java5>import java.util.Arrays; import java.util.Random; import java.util.Scanner; import java.util.stream.IntStream;

public interface PigDice {

 public static void main(String... arguments) {
   final int maxScore = 100;
   final int playerCount = 2;
   final String[] yesses = {"y", "Y", ""};

   final Scanner scanner = new Scanner(System.in);
   final Random random = new Random();

   final int[] safeScore = new int[2];
   final int[] score = new int[2];

   IntStream.iterate(0, player -> (player + 1) % playerCount)
     .map(player -> {
       boolean isRolling = true;
       while (isRolling) {
         System.out.printf(
           "Player %d: (%d, %d) Rolling? (y/n) ",
           player,
           safeScore[player],
           score[player]
         );
         isRolling =
           safeScore[player] + score[player] < maxScore
             && Arrays.asList(yesses).contains(scanner.nextLine())
         ;
         if (isRolling) {
           final int rolled = random.nextInt(6) + 1;
           System.out.printf("Rolled %d\n", rolled);
           if (rolled == 1) {
             System.out.printf(
               "Bust! You lose %d but keep %d\n\n",
               score[player],
               safeScore[player]
             );
             return -1;
           } else {
             score[player] += rolled;
           }
         } else {
           safeScore[player] += score[player];
           if (safeScore[player] >= maxScore) {
             return player;
           }
           System.out.printf("Sticking with %d\n\n", safeScore[player]);
         }
       }
       score[player] = 0;
       return -1;
     })
     .filter(player -> player > -1)
     .findFirst()
     .ifPresent(player ->
       System.out.printf(
         "\n\nPlayer %d wins with a score of %d",
         player,
         safeScore[player]
       )
     )
   ;
 }

}</lang>

 Player 0: (0, 0) Rolling? (y/n) y 
 Rolled 3
 Player 0: (0, 3) Rolling? (y/n) Y
 Rolled 5
 Player 0: (0, 8) Rolling? (y/n) 
 Rolled 2
 Player 0: (0, 10) Rolling? (y/n) n
 Sticking with 10

 Player 1: (0, 0) Rolling? (y/n) 
 Rolled 1
 Bust! You lose 0 but keep 0

 Player 0: (10, 0) Rolling? (y/n) 
 Rolled 1
 Bust! You lose 0 but keep 10

 Player 1: (0, 0) Rolling? (y/n) 
 Rolled 4
 Player 1: (0, 4) Rolling? (y/n) 
 Rolled 5
 Player 1: (0, 9) Rolling? (y/n) 
 Rolled 1
 Bust! You lose 9 but keep 0

(...)

 Player 1: (96, 0) Rolling? (y/n) 
 Rolled 4
 Player 1: (96, 4) Rolling? (y/n) 
 Rolled 2
 Player 1: (96, 6) Rolling? (y/n) n

Player 1 wins with a score of 102

Mathematica

<lang>DynamicModule[{score, players = {1, 2}, roundscore = 0,

 roll}, (score@# = 0) & /@ players; 
Panel@Dynamic@
  Column@{Grid[
     Prepend[{#, score@#} & /@ players, {"Player", "Score"}], 
     Background -> {None, 2 -> Gray}], roundscore, 
    If[ValueQ@roll, Row@{"Rolled ", roll}, ""], 
    If[IntegerQ@roundscore, 
     Row@{Button["Roll", roll = RandomInteger[{1, 6}]; 
        If[roll == 1, roundscore = 0; players = RotateLeft@players, 
         roundscore += roll]], 
       Button["Hold", score[players1] += roundscore; 
        roundscore = 0; 
        If[score[players1] >= 100, roll =.; 
         roundscore = Row@{players1, " wins."}, 
         players = RotateLeft@players]]}, 
     Button["Play again.", 
      roundscore = 0; (score@# = 0) & /@ players]]}]</lang>

Objeck

<lang objeck> class Pig {

 function : Main(args : String[]) ~ Nil {
   player_count := 2;
   max_score := 100;
   safe_score := Int->New[player_count];
   player := 0; score := 0;
   
   while(true) {
     safe := safe_score[player];
     " Player {$player}: ({$safe}, {$score}) Rolling? (y/n) "->PrintLine();
     rolling := IO.Console->ReadString();
     if(safe_score[player] + score < max_score & (rolling->Equals("y") | rolling->Equals("yes"))) {
       rolled := ((Float->Random() * 100.0)->As(Int) % 6) + 1;
       " Rolled {$rolled}"->PrintLine();
       if(rolled = 1) {
         safe := safe_score[player];
         "  Bust! you lose {$score} but still keep your previous {$safe}\n"->PrintLine();
         score := 0;
         player := (player + 1) % player_count;
       }
       else {
         score += rolled;
       };
     }
     else {
       safe_score[player] += score;
       if(safe_score[player] >= max_score) {
         break;
       };
       safe := safe_score[player];
       " Sticking with {$safe}\n"->PrintLine();
       score := 0;
       player := (player + 1) % player_count;
     };
   };
   safe := safe_score[player];
   "\n\nPlayer {$player} wins with a score of {$safe}"->PrintLine();
 }

} </lang>

 Player 0: (0, 0) Rolling? (y/n) 
y
 Rolled 3
 Player 0: (0, 3) Rolling? (y/n) 
y
 Rolled 2
 Player 0: (0, 5) Rolling? (y/n) 
...
 Rolled 4
 Player 1: (56, 30) Rolling? (y/n) 
n
 Sticking with 86

 Player 0: (94, 0) Rolling? (y/n) 
y
 Rolled 6
 Player 0: (94, 6) Rolling? (y/n) 
n
...
 Rolled 4
 Player 1: (56, 30) Rolling? (y/n) 
n
 Sticking with 86

 Player 0: (94, 0) Rolling? (y/n) 
y
 Rolled 6
 Player 0: (94, 6) Rolling? (y/n) 
n

Perl

You can have as many players as you want, simply provide their names on the command line. <lang perl>#!perl use strict; use warnings; my @players = @ARGV; @players = qw(Joe Mike); my @scores = (0) x @players; while( 1 ) { PLAYER: for my $i ( 0 .. $#players ) { my $name = $players[$i]; my $score = $scores[$i]; my $roundscore = 1 + int rand 6; print "$name, your score so far is $score.\n"; print "You rolled a $roundscore.\n"; next PLAYER if $roundscore == 1; while($score + $roundscore < 100) { print "Roll again, or hold [r/h]: "; my $answer = <>; $answer = 'h' unless defined $answer; if( $answer =~ /^h/i ) { $score += $roundscore; $scores[$i] = $score; print "Your score is now $score.\n"; next PLAYER; } elsif( $answer =~ /^r/ ) { my $die = 1 + int rand 6; print "$name, you rolled a $die.\n"; next PLAYER if $die == 1; $roundscore += $die; print "Your score for the round is now $roundscore.\n"; } else { print "I did not understand that.\n"; } } $score += $roundscore; print "With that, your score became $score.\n"; print "You won!\n"; exit; } } __END__ </lang>

Perl 6

Works with: niecza version 2012-09-12

<lang perl6>constant DIE = 1..6;

sub MAIN (Int :$players = 2, Int :$goal = 100) {

   my @safe = 0 xx $players;
   for ^$players xx * -> $player {

say "\nOK, player #$player is up now."; my $safe = @safe[$player]; my $ante = 0; until $safe + $ante >= $goal or prompt("#$player, you have $safe + $ante = {$safe+$ante}. Roll? [Yn] ") ~~ /:i ^n/ { given DIE.roll { say " You rolled a $_."; when 1 { say " Bust! You lose $ante but keep your previous $safe."; $ante = 0; last; } when 2..* { $ante += $_; } } } $safe += $ante; if $safe >= $goal { say "\nPlayer #$player wins with a score of $safe!"; last; } @safe[$player] = $safe; say " Sticking with $safe." if $ante;

   }

}</lang> The game defaults to the specified task, but we'll play a shorter game with three players for our example:

Output:

> pig help
Usage:
  pig [--players=<Int>] [--goal=<Int>]
> pig --players=3 --goal=20

OK, player #0 is up now.
#0, you have 0 + 0 = 0. Roll? [Yn] 
  You rolled a 6.
#0, you have 0 + 6 = 6. Roll? [Yn] 
  You rolled a 6.
#0, you have 0 + 12 = 12. Roll? [Yn] n
  Sticking with 12.

OK, player #1 is up now.
#1, you have 0 + 0 = 0. Roll? [Yn] 
  You rolled a 4.
#1, you have 0 + 4 = 4. Roll? [Yn] 
  You rolled a 6.
#1, you have 0 + 10 = 10. Roll? [Yn] 
  You rolled a 6.
#1, you have 0 + 16 = 16. Roll? [Yn] n
  Sticking with 16.

OK, player #2 is up now.
#2, you have 0 + 0 = 0. Roll? [Yn] 
  You rolled a 5.
#2, you have 0 + 5 = 5. Roll? [Yn] 
  You rolled a 1.
  Bust!  You lose 5 but keep your previous 0.

OK, player #0 is up now.
#0, you have 12 + 0 = 12. Roll? [Yn] 
  You rolled a 1.
  Bust!  You lose 0 but keep your previous 12.

OK, player #1 is up now.
#1, you have 16 + 0 = 16. Roll? [Yn] n

OK, player #2 is up now.
#2, you have 0 + 0 = 0. Roll? [Yn] 
  You rolled a 6.
#2, you have 0 + 6 = 6. Roll? [Yn] 
  You rolled a 6.
#2, you have 0 + 12 = 12. Roll? [Yn] 
  You rolled a 4.
#2, you have 0 + 16 = 16. Roll? [Yn] 
  You rolled a 6.

Player #2 wins with a score of 22!

PHP

Translation of: D

<lang php>error_reporting(E_ALL & ~ ( E_NOTICE | E_WARNING ));

define('MAXSCORE', 100); define('PLAYERCOUNT', 2);

$confirm = array('Y', 'y', );

while (true) {

   printf(' Player %d: (%d, %d) Rolling? (Yn) ', $player,
           $safeScore[$player], $score);
   if ($safeScore[$player] + $score < MAXSCORE &&
           in_array(trim(fgets(STDIN)), $confirm)) {
       $rolled = rand(1, 6);
       echo " Rolled $rolled \n";
       if ($rolled == 1) {
           printf(' Bust! You lose %d but keep %d \n\n',
                   $score, $safeScore[$player]);
       } else {
           $score += $rolled;
           continue;
       }
   } else {
       $safeScore[$player] += $score;
       if ($safeScore[$player] >= MAXSCORE)
           break;
       echo ' Sticking with ', $safeScore[$player], '\n\n';
   }
   $score = 0;
   $player = ($player + 1) % PLAYERCOUNT;

} printf('\n\nPlayer %d wins with a score of %d ',

   $player, $safeScore[$player]);

</lang>

C:\UniServer\usr\local\php\php pig.php
 Player 0: (0, 0) Rolling? (Yn)
 Rolled 2
 Player 0: (0, 2) Rolling? (Yn)
 Rolled 1
 Bust! You lose 2 but keep 0

 Player 1: (0, 0) Rolling? (Yn)
 Rolled 2
 Player 1: (0, 2) Rolling? (Yn)
 Rolled 1
 Bust! You lose 2 but keep 0

 Player 0: (0, 0) Rolling? (Yn)
 Rolled 3
 Player 0: (0, 3) Rolling? (Yn)
 Rolled 6
 Player 0: (0, 9) Rolling? (Yn) n
 sticking with 9

 Player 1: (0, 0) Rolling? (Yn)
 Rolled 5
 Player 1: (0, 5) Rolling? (Yn)
 Rolled 3
 Player 1: (0, 8) Rolling? (Yn) n
 sticking with 8

 (...)
 
 Player 1: (93, 0) Rolling? (Yn)
 Rolled 5
 Player 1: (93, 5) Rolling? (Yn)
 Rolled 3
 Player 1: (93, 8) Rolling? (Yn)

Player 1 wins with a score of 101

Python

<lang python>#!/usr/bin/python3

See: http://en.wikipedia.org/wiki/Pig_(dice)

This program scores and throws the dice for a two player game of Pig

from random import randint

playercount = 2 maxscore = 100 safescore = [0] * playercount player = 0 score=0

while max(safescore) < maxscore:

   rolling = input("Player %i: (%i, %i) Rolling? (Y) "
                   % (player, safescore[player], score)).strip().lower() in {'yes', 'y', }
   if rolling:
       rolled = randint(1, 6)
       print('  Rolled %i' % rolled)
       if rolled == 1:
           print('  Bust! you lose %i but still keep your previous %i'
                 % (score, safescore[player]))
           score, player = 0, (player + 1) % playercount
       else:
           score += rolled
   else:
       safescore[player] += score
       if safescore[player] >= maxscore:
           break
       print('  Sticking with %i' % safescore[player])
       score, player = 0, (player + 1) % playercount
       

print('\nPlayer %i wins with a score of %i' %(player, safescore[player]))</lang>

Samples from a game

Player 0: (0, 0) Rolling? (Y) 
  Rolled 6
Player 0: (0, 6) Rolling? (Y) 
  Rolled 5
Player 0: (0, 11) Rolling? (Y) 
  Rolled 1
  Bust! you lose 11 but still keep your previous 0
Player 1: (0, 0) Rolling? (Y) 
  Rolled 3
Player 1: (0, 3) Rolling? (Y) 
  Rolled 4
Player 1: (0, 7) Rolling? (Y) 
  Rolled 6
Player 1: (0, 13) Rolling? (Y) n
  Sticking with 13
...
Player 0: (78, 10) Rolling? (Y) n
  Sticking with 88
Player 1: (63, 0) Rolling? (Y) 
  Rolled 6
Player 1: (63, 6) Rolling? (Y) 
  Rolled 1
  Bust! you lose 6 but still keep your previous 63
Player 0: (88, 0) Rolling? (Y) n
  Sticking with 88
Player 1: (63, 0) Rolling? (Y) n
  Sticking with 63
Player 0: (88, 0) Rolling? (Y) 
  Rolled 6
Player 0: (88, 6) Rolling? (Y) 
  Rolled 4
Player 0: (88, 10) Rolling? (Y) 
  Rolled 3
Player 0: (88, 13) Rolling? (Y) n

Player 0 wins with a score of 101

Racket

<lang racket>

1. lang racket

(define (pig-the-dice #:print? [print? #t] . players)

 (define prn (if print? (λ xs (apply printf xs) (flush-output)) void))
 (define names (for/list ([p players] [n (in-naturals 1)]) n))
 (define points (for/list ([p players]) (box 0)))
 (with-handlers ([(negate exn?) identity])
   (for ([nm (in-cycle names)] [tp (in-cycle points)] [pl (in-cycle players)])
     (prn (string-join (for/list ([n names] [p points])
                         (format "Player ~a, ~a points" n (unbox p)))
                       "; " #:before-first "Status: " #:after-last ".\n"))
     (let turn ([p 0] [n 0])
       (prn "Player ~a, round #~a, [R]oll or [P]ass? " nm (+ 1 n))
       (define roll? (pl (unbox tp) p n))
       (unless (eq? pl human) (prn "~a\n" (if roll? 'R 'P)))
       (if (not roll?) (set-box! tp (+ (unbox tp) p))
           (let ([r (+ 1 (random 6))])
             (prn "  Dice roll: ~s => " r)
             (if (= r 1) (prn "turn lost\n")
                 (let ([p (+ p r)]) (prn "~a points\n" p) (turn p (+ 1 n)))))))
     (prn "--------------------\n")
     (when (<= 100 (unbox tp)) (prn "Player ~a wins!\n" nm) (raise nm)))))

(define (human total-points turn-points round#)

 (case (string->symbol (car (regexp-match #px"[A-Za-z]?" (read-line))))
   [(R r) #t] [(P p) #f] [else (human total-points turn-points round#)]))

(pig-the-dice #:print? #t human human) </lang>

REXX

This REXX program has the following features:

• any number of human players can play
• any number of computer players can play
• human and computers can play together (humans always go first)
• names of the human players can be specified
• names of the computer players can be specified
• the score needed to win may be specified
• verbosity was chosen as it's assumed that a human is playing
• code was written to allow for an N sided die
• names are used for the die faces (as well as the pip value)
• a simple strategy (but aggressive) was used (that favors a human player)

<lang rexx>/*REXX program plays pig (the dice game) with at least one human player.*/ signal on syntax; signal on novalue /*handle REXX program errors. */ sw=80-1 /*the LINESIZE bif would be nicer*/ parse arg hp cp win die _ . '(' names ")" /*obtain optional arguments.*/ if _\== then call err 'too many arguments were specified: ' _ @nhp = 'number of human players'  ; hp = scrutinize( hp, @nhp ,0, 0) @ncp = 'number of computer players'; cp = scrutinize( cp, @ncp ,0, 0) @sn2w = 'score needed to win'  ; win = scrutinize(win, @sn2w ,1,100) @nsid = 'number of sides in die'  ; die = scrutinize(die, @nsid ,2, 6) if hp==0 & cp==0 then cp=2 /*if both counts are zero, 2 HALs*/ if hp==1 & cp==0 then cp=1 /*if one human, then use 1 HAL.*/ L=0 /*maximum length of a player name*/

      do i=1  for hp+cp               /*get the player's names, maybe. */
      if i>hp  then @='HAL_'i"_the_computer"    /*use this for default.*/
               else @='player_'i                /* "    "   "     "    */
      name.i = translate( word( strip( word(names,i)) @, 1),,'_')
      L=max(L, length(name.i))        /*use L for nice name formatting.*/
      end   /*i*/                     /*underscores are changed─�blanks*/

hpn=hp; if hpn==0 then hpn='no' /*use normal English for display.*/ cpn=cp; if cpn==0 then cpn="no" /* " " " " " */ say 'Pig (the dice game) is being played with'

        if cpn\==0  then  say  right(cpn,9)  'computer player's(cp)
        if hpn\==0  then  say  right(hpn,9)  'human player's(hp)

say 'and the' @sn2w "is: " win ' (or greater).' !.=; dieNames='ace duece trey square nickle boxcar' /*die face names.*/

                                      /*note: snake eyes is for 2 aces.*/
               do i=1  for 6;  !.i=' ['word(dieNames,i)"] ";  end   /*i*/

s.=0 /*set all player's scores to zero*/ @=copies('─',9) /*an eyecatcher (for prompting). */ @jra='just rolled a '; @ati=', and the inning' /*nice literals to have.*/ /*──────────────────────────────────────────────────let's play some pig.*/

  do game=1;  in.=0                   /*set each inning's score to zero*/
  say;      say copies('█',sw)        /*display a fence for da eyeballs*/

       do k=1  for hp+cp              /*display the scores (as a recap)*/
       say 'The score for' left(name.k,L) "is " right(s.k,length(win))'.'
       end  /*k*/

  say copies('█',sw)                  /*display a fence for da eyeballs*/

    do j=1  for hp+cp                 /*let each player roll their dice*/
    say;  say copies('─',sw);         /*display a fence for da eyeballs*/
    it=word('You It', 1 + (j>hp))     /*pronoun choice:   You  or  It  */
    say name.j',  your total score (so far) in this pig game is:' s.j"."

      do  until stopped               /*keep prompting/rolling 'til not*/
      r=random(1,die); !=space(r !.r) /*for color, use a die-face name.*/
      in.j=in.j+r
      if r==1  then  do;  say it @jra ! || @ati "is a bust."; leave;  end
                          say it @jra ! || @ati "total is:"   in.j
      stopped=what2do(j)              /*determine|ask  to stop rolling.*/
      if j>hp & stopped then say ' and' name.j "elected to stop rolling."
      end   /*until stopped*/

    if r\==1     then s.j=s.j+in.j    /*if not a bust, then add inning.*/
    if s.j>=win  then leave game      /*we have a winner, so game ends.*/
    end     /*j*/                     /*that's the end of the players. */
  end       /*game*/

say; say; say; say; say center(name.j "won! ",sw,'═'); say; say; exit exit /*stick a fork in it, we're done.*/ /*──────────────────────────────────S subroutine────────────────────────*/ s: if arg(1)==1 then return arg(3); return word(arg(2) 's',1) /*plural?*/ /*──────────────────────────────────SCRUTINIZE subroutine───────────────*/ scrutinize: parse arg ?,what,minimum /*? is the number, or maybe not. */ if ?== |  ?==',' then return arg(4) if \datatype(?,'N') then call err what "isn't numeric: "  ?;  ?=?/1 if \datatype(?,'W') then call err what "isn't an integer: " ? if ?==0 & minimum>0 then call err what "can't be zero." if ?<minimum then call err what "can't be less than" minimum': ' ? return ? /*──────────────────────────────────what2do subroutine──────────────────*/ what2do: parse arg who /*"who" is a human or a computer.*/ if (j>hp & r+in.j>=win) then return 1 /*an easy choice for HAL.*/ if (j>hp & in.j>=win%4) then return 1 /*a simple stategy for HAL.*/ if j>hp then return 0 /*HAL says, keep truckin'! */ say @ name.who', what do you want to do? (a QUIT will stop the game),' say @ 'press ENTER to roll again, or anything else to STOP rolling.' pull action; action=space(action) /*remove any superfluous blanks. */ if \abbrev('QUIT',action,1) then return action\== say; say; say; say center(' quitting. ',sw,'─'); say; say; say; exit /*───────────────────────────────error handling subroutines and others.─*/ err: say; say; say center(' error! ',max(40,linesize()%2),"*"); say

              do j=1 for arg(); say arg(j); say; end; say; exit 13

novalue: syntax: call err 'REXX program' condition('C') "error",,

            condition('D'),'REXX source statement (line' sigl"):",,
            sourceline(sigl)

</lang> output when using the input of: 0 2 44 ( HAL R2D2
[This plays a simulated game with no humans, two computers, and the score to win is 44.]

Pig (the dice game) is being played with
        2 computer players
       no human players
and the score needed to win is:  44    (or greater).

███████████████████████████████████████████████████████████████████████████████
The score for HAL  is   0.
The score for R2D2 is   0.
███████████████████████████████████████████████████████████████████████████████

───────────────────────────────────────────────────────────────────────────────
HAL,  your total score (so far) in this pig game is: 0.
It just rolled a  5 [nickle],  and the inning total is: 5
It just rolled a  2 [duece],  and the inning total is: 7
It just rolled a  2 [duece],  and the inning total is: 9
It just rolled a  6 [boxcar],  and the inning total is: 15
 and HAL elected to stop rolling.

───────────────────────────────────────────────────────────────────────────────
R2D2,  your total score (so far) in this pig game is: 0.
It just rolled a  6 [boxcar],  and the inning total is: 6
It just rolled a  6 [boxcar],  and the inning total is: 12
 and R2D2 elected to stop rolling.

███████████████████████████████████████████████████████████████████████████████
The score for HAL  is  15.
The score for R2D2 is  12.
███████████████████████████████████████████████████████████████████████████████

───────────────────────────────────────────────────────────────────────────────
HAL,  your total score (so far) in this pig game is: 15.
It just rolled a  1 [ace],  and the inning is a bust.

───────────────────────────────────────────────────────────────────────────────
R2D2,  your total score (so far) in this pig game is: 12.
It just rolled a  6 [boxcar],  and the inning total is: 6
It just rolled a  5 [nickle],  and the inning total is: 11
 and R2D2 elected to stop rolling.

███████████████████████████████████████████████████████████████████████████████
The score for HAL  is  15.
The score for R2D2 is  23.
███████████████████████████████████████████████████████████████████████████████

───────────────────────────────────────────────────────────────────────────────
HAL,  your total score (so far) in this pig game is: 15.
It just rolled a  2 [duece],  and the inning total is: 2
It just rolled a  5 [nickle],  and the inning total is: 7
It just rolled a  5 [nickle],  and the inning total is: 12
 and HAL elected to stop rolling.

───────────────────────────────────────────────────────────────────────────────
R2D2,  your total score (so far) in this pig game is: 23.
It just rolled a  5 [nickle],  and the inning total is: 5
It just rolled a  3 [trey],  and the inning total is: 8
It just rolled a  5 [nickle],  and the inning total is: 13
 and R2D2 elected to stop rolling.

███████████████████████████████████████████████████████████████████████████████
The score for HAL  is  27.
The score for R2D2 is  36.
███████████████████████████████████████████████████████████████████████████████

───────────────────────────────────────────────────────────────────────────────
HAL,  your total score (so far) in this pig game is: 27.
It just rolled a  5 [nickle],  and the inning total is: 5
It just rolled a  4 [square],  and the inning total is: 9
It just rolled a  3 [trey],  and the inning total is: 12
 and HAL elected to stop rolling.

───────────────────────────────────────────────────────────────────────────────
R2D2,  your total score (so far) in this pig game is: 36.
It just rolled a  3 [trey],  and the inning total is: 3
It just rolled a  5 [nickle],  and the inning total is: 8
It just rolled a  1 [ace],  and the inning is a bust.

███████████████████████████████████████████████████████████████████████████████
The score for HAL  is  39.
The score for R2D2 is  36.
███████████████████████████████████████████████████████████████████████████████

───────────────────────────────────────────────────────────────────────────────
HAL,  your total score (so far) in this pig game is: 39.
It just rolled a  2 [duece],  and the inning total is: 2
It just rolled a  2 [duece],  and the inning total is: 4
It just rolled a  1 [ace],  and the inning is a bust.

───────────────────────────────────────────────────────────────────────────────
R2D2,  your total score (so far) in this pig game is: 36.
It just rolled a  6 [boxcar],  and the inning total is: 6
It just rolled a  4 [square],  and the inning total is: 10
It just rolled a  1 [ace],  and the inning is a bust.

███████████████████████████████████████████████████████████████████████████████
The score for HAL  is  39.
The score for R2D2 is  36.
███████████████████████████████████████████████████████████████████████████████

───────────────────────────────────────────────────────────────────────────────
HAL,  your total score (so far) in this pig game is: 39.
It just rolled a  4 [square],  and the inning total is: 4
It just rolled a  1 [ace],  and the inning is a bust.

───────────────────────────────────────────────────────────────────────────────
R2D2,  your total score (so far) in this pig game is: 36.
It just rolled a  2 [duece],  and the inning total is: 2
It just rolled a  2 [duece],  and the inning total is: 4
It just rolled a  6 [boxcar],  and the inning total is: 10
It just rolled a  3 [trey],  and the inning total is: 13
 and R2D2 elected to stop rolling.




══════════════════════════════════R2D2 won! ═══════════════════════════════════

Ruby

Features:

• arbitrary number of players, max score, and die sides
• players with names
• transparent game logic

<lang ruby>class PigGame

 Player = Struct.new(:name, :safescore, :score) do
   def bust!() self.score = safescore end
   def stay!() self.safescore = score end
   def roll!(die_sides) rand(1..die_sides) end
   def wants_to_roll?
     print("#{name} (#{safescore}, #{score})", ": Roll? (Y) ") 
     ['Y','y',].include?(gets.chomp)
   end
 end

 def bust?(roll) roll==1 ? (puts("Busted!",) || true) : false end

 def play(names, maxscore=100, die_sides=6)
   rotation = names.map {|name| Player.new(name,0,0) }.cycle

   while player = rotation.next
     loop do
       if player.wants_to_roll?
         puts "Rolled: #{roll=player.roll!(die_sides)}"
         if bust?( roll )
           player.bust! && break
         else
           player.score += roll
           return player if player.score >= maxscore
         end
       else
         player.stay! && puts("Staying with #{player.safescore}!", )
         break
       end
     end
   end
 end

end

print PigGame.new.play( %w|Samuel Elizabeth| ).name, " wins!"</lang>

Samples from a game

Samuel (0, 0): Roll? (Y) 
Rolled: 2
Samuel (0, 2): Roll? (Y) 
Rolled: 4
Samuel (0, 6): Roll? (Y) 
Rolled: 1
Busted!

Elizabeth (0, 0): Roll? (Y) 
Rolled: 3
Elizabeth (0, 3): Roll? (Y) 
Rolled: 5
Elizabeth (0, 8): Roll? (Y) 
Rolled: 2
Elizabeth (0, 10): Roll? (Y) n
Staying with 10!

Samuel (0, 0): Roll? (Y) 
Rolled: 4
Samuel (0, 4): Roll? (Y) 
Rolled: 1
Busted!

Elizabeth (10, 10): Roll? (Y) 
Rolled: 2
Elizabeth (10, 12): Roll? (Y) 
Rolled: 6
Elizabeth (10, 18): Roll? (Y) n
Staying with 18!
...
Elizabeth (83, 97): Roll? (Y) 
Rolled: 5
Elizabeth wins!

Run BASIC

<lang runbasic>numPlayers = 2 maxScore = 100 dim safeScore(numPlayers)

[loop] for player = 1 to numPlayers

 score     = 0

 while safeScore(player) < maxScore
  input "Player ";player;" Rolling? (Y) ";rolling$
   if upper$(rolling$) = "Y" then
       rolled = int(rnd(0) * 5) + 1
       print "Player ";player;" rolled ";rolled
       if rolled = 1 then
           print "Bust! you lose player ";player;" but still keep your previous score of ";safeScore(plater)
           exit while
       end if
       score = score + rolled
   else
       safeScore(player) = safeScore(player) + score
   end if
 wend

next player goto [loop] [winner] print "Player ";plater;" wins with a score of ";safeScore(player)</lang>

Tcl

Works with: Tcl version 8.6

or alternatively with Tcl 8.5 and

Library: TclOO

<lang tcl>package require TclOO

oo::class create Player {

   variable me
   constructor {name} {

set me $name

   }
   method name {} {

return $me

   }

   method wantToRoll {safeScore roundScore} {}
   method stuck {score} {}
   method busted {score} {}
   method won {score} {}

   method rolled {who what} {

if {$who ne [self]} { #puts "[$who name] rolled a $what" }

   }
   method turnend {who score} {

if {$who ne [self]} { puts "End of turn for [$who name] on $score" }

   }
   method winner {who score} {

if {$who ne [self]} { puts "[$who name] is a winner, on $score" }

   }

}

proc rollDie {} {

   expr {1+int(rand() * 6)}

} proc rotateList {var} {

   upvar 1 $var l
   set l [list {*}[lrange $l 1 end] [lindex $l 0]]

} proc broadcast {players message score} {

   set p0 [lindex $players 0]
   foreach p $players {

$p $message $p0 $score

   }

}

proc pig {args} {

   set players $args
   set scores [lrepeat [llength $args] 0]
   while 1 {

set player [lindex $players 0] set safe [lindex $scores 0] set s 0 while 1 { if {$safe + $s >= 100} { incr safe $s $player won $safe broadcast $players winner $safe return $player } if {![$player wantToRoll $safe $s]} { lset scores 0 [incr safe $s] $player stuck $safe break } set roll [rollDie] broadcast $players rolled $roll if {$roll == 1} { $player busted $safe break } incr s $roll } broadcast $players turnend $safe rotateList players rotateList scores

   }

}</lang> Demonstrating with human players: <lang tcl>oo::class create HumanPlayer {

   variable me
   superclass Player
   method wantToRoll {safeScore roundScore} {

while 1 { puts -nonewline "$me (on $safeScore+$roundScore) do you want to roll? (Y/n)" flush stdout if {[gets stdin line] < 0} { # EOF detected puts "" exit } if {$line eq "" || $line eq "y" || $line eq "Y"} { return 1 } if {$line eq "n" || $line eq "N"} { return 0 } }

   }
   method stuck {score} {

puts "$me sticks with score $score"

   }
   method busted {score} {

puts "Busted! ($me still on score $score)"

   }
   method won {score} {

puts "$me has won! (Score: $score)"

   }

}

pig [HumanPlayer new "Alex"] [HumanPlayer new "Bert"]</lang>

Sample output:

Alex (on 0+0) do you want to roll? (Y/n)y
Busted! (Alex still on score 0)
End of turn for Alex on 0
Bert (on 0+0) do you want to roll? (Y/n)
Bert (on 0+2) do you want to roll? (Y/n)
Bert (on 0+5) do you want to roll? (Y/n)
Bert (on 0+11) do you want to roll? (Y/n)
Bert (on 0+13) do you want to roll? (Y/n)
Bert (on 0+15) do you want to roll? (Y/n)
Bert (on 0+18) do you want to roll? (Y/n)
Bert (on 0+22) do you want to roll? (Y/n)n
Bert sticks with score 22
End of turn for Bert on 22
...
Bert (on 87+0) do you want to roll? (Y/n)
Bert (on 87+5) do you want to roll? (Y/n)
Bert (on 87+8) do you want to roll? (Y/n)
Bert has won! (Score: 101)
Bert is a winner, on 101

XPL0

<lang XPL0>include c:\cxpl\codes; \intrinsic 'code' declarations integer Player, Die, Points, Score(2); [Score(0):= 0; Score(1):= 0; \starting scores for each player Player:= 1; \second player repeat Player:= if Player = 1 then 0 else 1; \next player

       Points:= 0;                                     \points for current turn
       loop    [Text(0, "Player ");  IntOut(0, Player+1);
               Text(0, " is up. Roll or hold (r/h)? ");
               OpenI(0);       \discard any chars in keyboard buffer (like CR)
               if ChIn(0) = ^h then quit               \default is 'r' to roll
               else    [Die:= Ran(6)+1;                \roll the die
                       Text(0, "You get ");  IntOut(0, Die);  CrLf(0);
                       if Die = 1 then [Points:= 0;  quit];
                       Points:= Points + Die;          \add up points for turn
                       Text(0, "Total points are ");  IntOut(0, Points);
                       Text(0, " for a tentative score of ");
                       IntOut(0, Score(Player)+Points);  CrLf(0);
                       ];
               ];
       Score(Player):= Score(Player) + Points;         \show scores
       Text(0, "Player 1 has ");  IntOut(0, Score(0));
       Text(0, " and player 2 has ");  IntOut(0, Score(1));  CrLf(0);

until Score(Player) >= 100; Text(0, "Player "); IntOut(0, Player+1); Text(0, " WINS!!!"); ]</lang>

Output:

Player 1 is up. Roll or hold (r/h)? r
You get 5
Total points are 5 for a tentative score of 5
Player 1 is up. Roll or hold (r/h)? r
You get 6
Total points are 11 for a tentative score of 11
Player 1 is up. Roll or hold (r/h)? r
You get 6
Total points are 17 for a tentative score of 17
Player 1 is up. Roll or hold (r/h)? r
You get 6
Total points are 23 for a tentative score of 23
Player 1 is up. Roll or hold (r/h)? h
Player 1 has 23 and player 2 has 0
Player 2 is up. Roll or hold (r/h)? r
You get 2
Total points are 2 for a tentative score of 2
Player 2 is up. Roll or hold (r/h)? r
You get 6
Total points are 8 for a tentative score of 8
Player 2 is up. Roll or hold (r/h)? r
You get 1
Player 1 has 23 and player 2 has 0
...
Player 1 has 94 and player 2 has 57
Player 1 is up. Roll or hold (r/h)? r
You get 6
Total points are 6 for a tentative score of 100
Player 1 is up. Roll or hold (r/h)? h
Player 1 has 100 and player 2 has 57
Player 1 WINS!!!