CA

#include <cstdlib>
#include <iostream>
#include <vector>
#include <sstream>
#include <fstream>
#include <string>
#include <stdlib.h>

using namespace std;


class Automata
{

public:
void Menu();
void print();
void generation();
void saveToTxt();

int height;
int width;
int rules[8];
vector<int> cell;
vector<int> oldCell;
int rule[8];
int execRules(int x, int y, int z);
void setRules(int dRule);
void nLine(int a,int b,int c,int i);
};

void Automata::generation()
{
    ofstream outfile("CA.txt");
    char save;
    char choice;
    int rule;
    int r;

    cout << "Choose the width for your automaton: "<<endl;
    cin >> width;
    cout << "Choose the height for your automaton: "<<endl;
    cin >> height;
    cout << "Do you wish to randomly select a rule? (Yes/No): "<<endl;
    cin >> choice;

        if(choice == 'y')
    {
        r = rand() % 256;
    }
        else if(choice == 'n')
    {

    //the random automata funtion does not work correctly i struglled to fix it
        cout << "Enter the rule for your automaton: ";
        cin >> rule;
    }
        else
    {
        cout << "Input not recognised!";
        generation();
    }

    cout << "The automaton would be saved to a .txt file. (Yes/No)"<<endl;
    cin >> save;

    if(save != 'y' && save != 'n')
    {
        cout << "Input not recognised!";
        generation();
    }

    cout << " Automata generated with the rule: " << rule << "" << endl;
    setRules(rule);
    oldCell.resize(width+1);
    cell.resize(width+1);
    int previous = 0, middle = 0, next = 0;

    for (int i = 0; i <= width; i++)
    {
        cell[i] = 0;
    }

    if (width%2 == 0)
    {
        cell[width/2] = 1;
    }
        else
        cell[(width+1)/2] = 1;
        print();

        if ( save == 'y' )
        {
            for(int k = 0; k < cell.size(); k++)
            {
                if(cell.at(k) == 1)outfile << "*";
                else outfile<<" ";
            }
        }
    outfile<<"\n";
    for(int j=0; j<height; j++)
    {
            cell.swap(oldCell);
            for (int i=0; i<=oldCell.size()-1; i++)
            {
                if(i!=0)previous = oldCell.at(i-1);
                else previous = oldCell.at(oldCell.size()-1);
                middle = oldCell.at(i);
                if(i != oldCell.size()-1)next = oldCell.at(i+1);
                else next = oldCell.at(0);
                nLine(previous,middle,next,i);
            }

            if(save == 'y')
        {
            for(int k = 0; k < cell.size(); k++)
            {
                if(cell.at(k) == 1)outfile << "*";
                else outfile<<" ";
            }
            outfile<<"\n";
            print();
        }
        else
        print();
    }
}

void Automata::setRules(int dRule)
{
    int set[8] = {128,64,32,16,8,4,2,1};
    for(int i = 0; i < 8; i++)
    {
        if(set[i] <= dRule)
        {
            rules[i] = 1;
            dRule = dRule - set[i];

        }
        else rules[i] = 0;
    }
}

int Automata::execRules(int x, int y, int z)
{
    if      (x == 1 && y == 1 && z == 1) return rules[0];
    else if (x == 1 && y == 1 && z == 0) return rules[1];
    else if (x == 1 && y == 0 && z == 1) return rules[2];
    else if (x == 1 && y == 0 && z == 0) return rules[3];
    else if (x == 0 && y == 1 && z == 1) return rules[4];
    else if (x == 0 && y == 1 && z == 0) return rules[5];
    else if (x == 0 && y == 0 && z == 1) return rules[6];
    else return rules[7];
}

void Automata::nLine(int a, int b, int c, int i)
{
    cell[i] = execRules(a,b,c);
}

void Automata::print()
{
    for(int i=0; i<cell.size(); i++)
    {
        if(cell.at(i) == 1) cout << "*";
        else cout << " ";
    }
    cout << "\n";
}

void Automata::Menu()
{
    string option;

    cout << "     "<<endl;
    cout << "Press S to start automaton" <<endl;
    cout << "Press C to clear the screen"<<endl;
    cout << "Press Q to quit program"<<endl;
    //cin >> option;

    do
    {
        getline( cin, option);
        switch (option[0])
        {
            case 'S':
            case 's':
                generation();
                Menu();
                break;

            case 'C':
            case 'c':
                cout << string(50, '\n');
                Menu();
                break;

            case 'Q':
            case 'q':
                cout << " Goodbye "<<endl;
                break;

                default:
                break;
        }

    }while (option[0] != 'q');
}

int main()
{
    Automata autom;
    autom.Menu();
    return 0;
}