Menu not responding to input

[Urist McCoder]

My roguelike game (Yeah, I've heard how the console isn't good, and system() is evil, and conio.h is old. Several times, in fact. So I don't particularly need to hear it again. This is just a little learning project for me.) has hit another snag: I can't get the menu's to change when you press keys. Here's it so far:

#include <iostream>
#include <cstdlib>
#include <conio.h>

using namespace std;

//screenNum == 1 - Gamescreen
//screenNum == 2 - Main Menu
//screenNum == 0 - Escape Menu

int mainBreak = 0;
int pInput;
int screenNum = 1;
int movementTimer;
int posx;
int posy;
int menuCursor;

void mainMenuFn();
void escMenuFn();
void mapFn();
void playerInput();
void menuInput();

int main()
{
    movementTimer = 0;
    posx = 1;
    posy = 1;

    for (mainBreak == 0; mainBreak == 0;)
    {
        playerInput();

    if (screenNum == 0)
        {escMenuFn();}
    if (screenNum == 1)
        {mapFn();}
    if (screenNum == 2)
        {mainMenuFn();}

        pInput = getch();

        system("CLS");
    }

    return 0;
}

void mainMenuFn()
{}

void escMenuFn()
{
    int loopBreak;

    menuCursor = 1;

    for (loopBreak == 0; loopBreak == 0;)
    {
        menuInput();

        // Cursor Checks
        if (menuCursor < 0)
        {menuCursor = 1;}
        if (menuCursor > 4)
        {menuCursor = 4;}

        // Cursor Actions
        if (menuCursor == 1)
        {cout << ">Return to Game\n";}
        else
        {cout << " Return to Game\n";}
        if (menuCursor == 2)
        {cout << ">Save Game\n";}
        else
        {cout << " Save Game\n";}
        if (menuCursor == 3)
        {cout << ">Options\n";}
        else
        {cout << " Options\n";}
        if (menuCursor == 4)
        {cout << ">Exit Game\n";}
        else
        {cout << " Exit Game\n";}

        getch();

        system("CLS");
   }
}

void mapFn()
{
    int mapArr[20][20];

    int markerX = 0;
    int markerY = 0;
    int x = 0;
    int y = 0;
    int mapTracker = 0;

    for (markerX = 0; markerX < 20; markerX++)
    {
        for (markerY = 0; markerY < 20; markerY++)
        {
            mapArr[markerX][markerY] = 2;
        }
    }

    mapArr[posx][posy] = 1;

    for (y = 0; y < 20; y++)
    {
        for (x = 0; x < 20; x++)
        {
            if (mapArr[x][y] == 2)
            {
                cout << ".";
                mapTracker++;
            }
            if (mapArr[x][y] == 1)
            {
                cout << "@";
                mapTracker++;
            }

            if (mapTracker == 20)
            {
                cout << "\n";
                mapTracker = 0;
            }
        }
    }

}

void playerInput()
{
    // Q - NW
    if (pInput == 113)
    {
        posx--;
        posy--;
    }
    // W - N
    if (pInput == 119)
    {
        posy--;
    }
    // E - NE
    if (pInput == 101)
    {
        posx++;
        posy--;
    }
    // A - W
    if (pInput == 97)
    {
        posx--;
    }
    // S - Hold
    if (pInput == 115)
    {
    }
    // D - E
    if (pInput == 100)
    {
        posx++;
    }
    // Z - SW
    if (pInput == 122)
    {
        posx--;
        posy++;
    }
    // X - S
    if (pInput == 120)
    {
        //posx++;
        posy++;
    }
    // C - SE
    if (pInput == 99)
    {
        posx++;
        posy++;
    }

    /* Sidebar
        Keys   */

    // esc - Menu
    if (pInput == 27)
    {
        screenNum = 0;
    }

    if (posx < 0)
    {posx = 0;}
    if (posy < 0)
    {posy = 0;}
    if (posx > 19)
    {posx = 19;}
    if (posy > 19)
    {posy = 19;}
}

void menuInput()
{
    // W - Up
    if (pInput == 119)
    {
        menuCursor--;
    }

    // S - Down
    if (pInput == 115)
    {
        menuCursor++;
    }
}

What's really affecting it is in the functions escMenuFn() and menuInput(). I did a test to find out what number getch() returns for each key, so I know those are accurate. If you paste that code into a compiler (I use Code::Blocks, but I don't know if which one you use makes a difference) and compile it, QWEASDZXC control the character and esc pulls up the menu. W and S should control the menus cursor, but they don't. I'm not sure why. Can anybody tell me what I'm doing wrong?

[Disch]

Yeah, I've heard ... [snip] This is just a little learning project for me.)

The problem is you're not really learning much by doing it that way, since what you're learning won't be applicable to future projects.