//QUESTION 1 FINALS TRIMESTER 2, 2013/2014

//pastebin.com/u/thewhitefang
//QUESTION 1 FINALS TRIMESTER 2, 2013/2014
//Rabbit
#include <iostream>
#include <fstream>
#include <string>

using namespace std;

class Screen{
    char **m_ppScreen;
    int m_Width;
    int m_Height;

public:
    //constructor
    Screen(int inWidth, int inHeight)
    {
        m_Width = inWidth;
        m_Height = inHeight;

        m_ppScreen = new char *[m_Height]; // pointer-to-pointer
        for (int i = 0; i < m_Height; i++){
            m_ppScreen[i] = new char[m_Width];
        }
        for (int i = 0; i < m_Height; i++){ //initialize each element with a blank space
            for (int j = 0; j < m_Width; j++)
                m_ppScreen[i][j] = ' ';
        }
    };
    //destructor
    ~Screen(){
        for (int i = 0; i < m_Height; i++){
            delete[] m_ppScreen[i];
        }
        delete[] m_ppScreen;
    }
    //setter function
    void Set(int x, int y, char pixel)
    {
        if (x >= m_Width || y >= m_Height){
            throw string("Input exceeding boundary array!"); //EH throw
        }
        m_ppScreen[y][x] = pixel;};

    //works like a getter function
    char Peek(int x, int y)
    {
        if (x >= m_Width || y >= m_Height){
            throw string("Input exceeding boundary array!");//EH throw
        }
        return m_ppScreen[y][x];};

    void Display()
    {
        for (int i = 0; i < m_Height; i++){
            for (int j = 0; j < m_Width; j++)
            {
                cout << m_ppScreen[i][j];
            }
            cout << endl;
        }
        cout << endl;
    };
};

int main(){

    string name;
    int row = 0;
    int col = 0;
    char v;

    ifstream myFile;
    cout << "Enter Filename: ";
    cin >> name;
    myFile.open(name);
    if (myFile.is_open()){
        myFile >> row >> col;
        Screen obj(row, col);

        while (!myFile.eof()){
            myFile >> v >> row >> col;
            try{ //try the function
                obj.Set(row, col, v);
            }
            catch (string &err){ //catch the error
                cout << err << endl;
            }
        }
        try{
            cout << "Pixel content at location 4,3: " << obj.Peek(4, 3) << endl;
        }
        catch (string &err){
            cout << err << endl;
        }
        myFile.close();
        cout << "Output: " << endl;
        obj.Display();
    }
    else
        cout << "Unable to open file!";
    return 0;
}