/* Filename: wordgame.cpp 
 * Author:   Anthony Larrain
 *
 * Decription: This program will randomly pick a word, scramble the word
 *             and output the scrambled word to the screen. The user
 *             will then try to guess the word.
 *
 * Input file: music.dat -- this file will contain the names of musical
                            instruments. The first line is an integer 
                            representing the number of words in the file.
 */
  
#include <iostream>
#include <fstream>
#include <string>
#include <cstring>
#include <cstdlib>
#include <ctime>

using namespace std;

void scramble(char *word );
void swap(char &x, char &y);
char** createList(int wordCount);
void deleteList(char **wordList, int wordCount);

const int WORD_LENGTH = 20;
const char FILE_NAME [] = "music.dat";

int main()
{
    ifstream fin(FILE_NAME);
    if(fin.fail()) {
        cerr << "Error opening music.dat" << endl;
        system("PAUSE");
        exit(EXIT_FAILURE);
    }
    int wordCount;
    fin >> wordCount;    
    char **wordList = createList(wordCount);
    
    for(int row = 0; row < wordCount; row++) {
        fin >> wordList[row];
    }
    
    char response;
    char word[WORD_LENGTH],guess[WORD_LENGTH];
    srand(time(NULL));   
   
    do{
        int randWord = rand() % wordCount;
        strcpy(word,wordList[randWord]);
        scramble(word);
        cout << "Take a Guess\t"  << word << endl;
        cin >> guess;
        if((strcmp(guess, wordList[randWord])) == 0){
            cout << "Correct" << endl;
        }else{
            cout <<"Incorrect, the word is " << wordList[randWord] << endl;
        }
        cout << "Another word (y)es ?  ";
        cin >> response;
    }while(response == 'y' || response == 'Y'); 
    deleteList(wordList,wordCount);     
    system("PAUSE");
    return 0;
}

void scramble(char *word)
{ 
  int  position;
  for(int i = 0; i < strlen(word); ++i){     
    swap(word[i], word[ rand() % strlen(word) ]);
  }
}
void swap(char &x, char &y)
{
	char temp = x;
	x = y;
	y = temp;
	return;
}
char** createList(int wordCount){
    // allocates the rows of wordList
    char **wordList = new  char* [wordCount];
    //for each row allocate the columns
    for(int i = 0; i < wordCount; i++){
        wordList[i] = new char [WORD_LENGTH];
    }    
    return wordList;
}
void deleteList(char **wordList, int wordCount){
    for(int i = 0; i < wordCount; i++){
        delete [] wordList[i];
    }
    delete [] wordList;        
}