CSCI 262 Data Structures--Spring 2004

Assignment 1 Solutions

Solution to player.cc

/*******************************************************************
* Name: Brenda Student
* Date: 2/6/04
* Course: CSCI 262 Section 01
* Assignment: Assignment 1
* Instructor: Royden
* Program: player.cc
* Purpose:  Implementation of player class for use in the Dice Poker game.
***************************************************************************/

#include "player.h"

Player::Player(void ) {
/* 
	Pre: None
	Post:  Player object is created with zero points, zero rank and the
		dice are all zero.
*/

  points = 0;
  rank = 0;
  for (int i = 0; i < numDice; i++ ) {
    diceArray[i] = 0;
  }

}
  
void Player::clearRank(void) {
/*
	Pre: Player object exists.
	Post: rank of player object is set to zero.
*/
  rank = 0;
}

void Player::clearPoints(void) {
/*
	Pre: Player object exists.
	Post: points for player object is set to zero.
*/
  points = 0;
}

void Player::throwDice(void) {
/*
	Pre: Player object exists.
	Post: Each die is assigned a random number betwwen 1 and 6.
*/
  for (int i = 0; i < numDice; i++ ) {
    diceArray[i] = (int)Randomize(6);
    cout << "Die #" << i+1 << " is a " << diceArray[i] << endl;
  }
  
  computeRank();

}

void Player::showRank(void) {
/*
	Pre: Player object exists and throwDice has been called.
	Post: A message is printed to the monitor corresponding the the
		rank of the current values of the dice.
*/
 
  switch(rank) {
  case 0:
    cout << "No Score, 0 points." << endl;
    break;
  case 1:
    cout << "One Pair, 1 point." << endl;
    break;
  case 2:
    cout << "Two Pairs, 2 points." << endl;
    break;
  case 3:
    cout << "Three of a kind, 3 points." << endl;
    break;
  case 4:
    cout << "Full House, 4 points. " << endl;
    break;
  case 5:
    cout << "Four of a kind, 5 points. " << endl;
    break;
  case 6:
    cout << "Five of a kind, 6 points." << endl;
    break;
  }


}

int Player::getRank(void) {
/*
	Pre: Player object exists.
	Post: Returns the rank of player object.
*/
  return rank;
}
  
int Player::getPoints( void ) {
/*
	Pre: Player object exists.
	Post: Returns the number of points for the player object
*/
  return points;
}

void Player::addPoint(void) {
/*
	Pre: Player object exists.
	Post: points of player object is incremented by 1.
*/
  points += 1;
}

void Player::computeRank(void) {
/*
	Pre: Player object exists and dice have been thrown at least once.
	Post: Rank of current values of dice is computed and stored in rank.
*/
  int numArray[7];
  int numPairs = 0;
  int i;

  for (i = 0; i < 7; i++){   // initialize the contents of numArray to 0
    numArray[i] = 0;
  }
  // step through the five dice values in diceArr and increment the
  // contents of the corresponding location of numArray
  for (i = 0; i < 5; i++) {
    numArray[diceArray[i]]++;
  }

  for (i = 1; i < 7; i++) { 
    if (numArray[i] == 2) {
      numPairs++;
    }
  }
  
  
  // determine whether numArray contains a 3, 4 or 5, print the 
  // corresponsing description, and return the rank
  rank = 0;
  for (i = 1; i < 7; i++) {
    if (numArray[i] == 5) {
      rank = 6;
    } else if (numArray[i] == 4) {
      rank = 5;
    } else if ((numArray[i] == 3) && (numPairs == 1)) {
      rank = 4;
    } else if ((numArray[i] == 3) && (numPairs == 0)) {
      rank = 3;
    }
  }
  if (rank < 3) {
  // if execution of the for loop ends without setting rank above 
  // zero, then numArray contains only 0's, 1's and 2's, and 
  // execution continues here
    if (numPairs == 2) {
      rank = 2;
    } else if (numPairs == 1) {
      rank = 1;
    } else {
      rank = 0;
    }
  }

}

/**********Randomize*****************************
 *Get a random number between 0 and range        *
 *************************************************/
int Randomize(int range)
{
  
  return ( (  (rand() * range) / 32769 ) + 1);
  
}