//This file provides the implementation of the life.h header file.


#include <iostream>
#include <fstream>
#include <cstdlib>
#include <vector>


#include "life.h"

using namespace std;

//GLOBAL VARIABLES

int ROWS = 0;         //stores the number of rows in the grid
int COLS = 0;      //stores the number of rows in the grid

#define dead 0
#define alive 1

char **array1; // Global 2-Dimensional Array



//This function reads input file for subsequent prosessing (add high level
//description of your implementation logic)
void populateWorld (const char * file)
{
    ifstream fin(file);

    if ( !fin )                                 // Terminates program if input file fails to open.
    {
        cout << "Program terminated. Input file failed to open.";
        fin.close();
        return;
    }

    findRowsCols();                             // Find the rows and the columns from the input file


    array1 = new char*[ROWS];                   // Allocate the array
    for ( int i = 0; i < ROWS; i++ )
    {
        array1[i] = new char[COLS];             // Initialize the elements
    }

    for (int row = 0; row < ROWS; row++)        // Read in the elements from file
    {
        for (int col = 0; col < COLS; col++)
        {
            fin >> array1[row][col];
        }
    }



}

//This function outputs the grid for current generation (add high level
//description of your implementation logic)
void showWorld ()
{
    for (int row = 0; row < ROWS; row++)
    {
        for (int col = 0; col < COLS; col++)
        {
            cout << array1[row][col];
        }
        cout << endl;
    }

    for(int i = 0; i < ROWS; ++i)
    {
        delete [] array1[i];
    }
    delete [] array1;

}

//This function creats new geneneration grid from the old generation grid
//(add high level description of your implementation logic)
void iterateGeneration ()
{

}


void findRowsCols()
{
    ifstream fin;
    fin.open("glider_gun_fight.txt");

    vector<char> contents;                      // start of vector
    char c;

    while ( fin.get(c).good() )
    {
        contents.push_back(c);
    }

    ROWS = 1 + count(contents.begin(), contents.end(), '\n' );
    COLS = find(contents.begin(), contents.end(), '\n') - contents.begin();

    cout << "There are " << ROWS << " rows and " << COLS << " columns" << endl << endl;

    fin.clear();
    fin.seekg(0);
}