#Move point on 2d array (practicing for fun)

4 messages · Page 1 of 1 (latest)

onyx pond
# 
#include <iostream>
#include <conio.h>
#include <Windows.h>

// whole cpp file scope vars here setup the size of the matrix
const int x_matrix = 4;
const int y_matrix = 4;

// create the 2 dim array
char matrix[x_matrix][y_matrix];

// O position inside the matrix
int x_pos = 1;
int y_pos = 1;

// use windows.h to reset cursosPos and avoid cls command that causing "flickering"
void ClearScreen()
{
    COORD cursorPosition;
    cursorPosition.X = 0;
    cursorPosition.Y = 0;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), cursorPosition);
}

static void initMatrix()
{
    ClearScreen();
    for (int x = 0; x < x_matrix; x++)
    {
        for (int y = 0; y < y_matrix; y++)
        {
            matrix[x][y] = 'x';
        }
    }

}

static void showMatrix()
{
    
    for (int x = 0; x < x_matrix; x++)
    {
        for (int y = 0; y < y_matrix; y++)
        {
            std::cout << matrix[x][y];
        }
        std::cout << "\n";
    }
}

static void updateMatrix(int _x = 0, int _y = 0)
{
    initMatrix();
    matrix[_x-1][_y-1] = 'O';
}

int main()
{
    initMatrix();
    updateMatrix(x_pos, y_pos);
    showMatrix();
    
    do
    {
        if (_getch() != '\033') //if ESC key pressed terminate program
        {
            switch (_getch())
            {
            case 72: //arrow key up
                x_pos = (x_pos <= 1) ? x_pos : --x_pos;
                updateMatrix(x_pos, y_pos);
                showMatrix();
                break;
            case 80: //arrow key down
                x_pos = (x_pos >= x_matrix) ? x_pos : ++x_pos;
                updateMatrix(x_pos, y_pos);
                showMatrix();
                break;
            case 77: //arrow key right
                y_pos = (y_pos >= y_matrix) ? y_pos : ++y_pos;
                updateMatrix(x_pos, y_pos);
                showMatrix();
                break;
            case 75: //arrow key left
                y_pos = (y_pos <= 1) ? y_pos : --y_pos;
                updateMatrix(x_pos, y_pos);
                showMatrix();
                break;
            default:
                break;
            }
        }
        else
        {
            return false;
        }
    } while (true);
    
}
#

yes the x and y are flipped doc

chrome pebble
#

Curious about why update is consistently written as upate here

onyx pond