Snake Game

#include "pch.h"
#include <iostream>
#include <conio.h>
#include <time.h>
#include <windows.h>

using namespace std;

int const width = 20;
int const height = 20;

int playerX = 10, playerY = 10;
int fruitX = rand() % 20;
int fruitY = rand() % 20;
int direction = 10;

int tailX[100],  tailY[100];
int nTail; //Length of the tail

int end_game = 0;
int points = 0;

int y;
int x;

bool print = false;

void draw_arena_and_character()
{
    for (int y = 0; y < height; y++)
    {
        for (int x = 0; x < width; x++)
        {
            if (playerX == 0)
            {
                direction = 4;
            }
            else if (playerX == 19)
            {
                direction = 2;
            }
            else if (playerY == 0)
            {
                direction = 3;
            }
            else if (playerY == 19)
            {
                direction = 1;
            }

            if (y == 0 || y == 19)
            {
                cout << "#";
            }
            else if (x == 0 || x == 19)
            {
                cout << "#";
            }
            else if (y == playerY && x == playerX)
            {
                cout << "O";
            }
            else if (y == fruitY && x == fruitX)
            {
                cout << "F";
            }
            else
            {
                print = false;
                for (int k = 0; k < nTail; k++)
                {
                    if (x == tailX[k] && y == tailY[k])
                    {
                        cout << "o";
                        print = true;
                    }
                }
                if (!print)
                    cout << " ";
            }
        }
        cout << endl;
    }
    cout << "Points: " << points;

    Sleep(100);

    system("cls");
}

void input()
{
    if (_kbhit())
    {
        char input_variable;
        input_variable = _getch();
        if (input_variable == 'w')
        {
            if (direction == 3)
                ;
            else
                direction = 1;
        }
        else if (input_variable == 'a')
        {
            if (direction == 4)
                ;
            else
                direction = 2;
        }
        else if (input_variable == 's')
        {
            if (direction == 1)
                ;
            else
                direction = 3;
        }
        else if (input_variable == 'd')
        {
            if (direction == 2)
                ;
            else
                direction = 4;
        }
    }
}

void logic()
{

    if (playerX == fruitX && playerY == fruitY)
    {
        nTail++;
        points += 10;
        srand(time(NULL));
        fruitY = (rand() % 18) + 1;
        fruitX = (rand() % 18) + 1;
    }

    int prevX = tailX[0];
    int prevY = tailY[0];
    int prev2X;
    int prev2Y;
    tailX[0] = x;
    tailY[0] = y;

    for (int i = 1; i < nTail; i++)
    {
        prev2X = tailX[i];
        prev2Y = tailY[i];
        tailX[i] = prevX;
        tailY[i] = prevY;
        prevX = prev2X;
        prevY = prev2Y;
    }

    //Check death
    if (nTail > 0)
    {
        for (int m = 0; m < nTail; m++)
        {
            if (tailX[m] == playerX && tailY[m] == playerY)
            {
                end_game = 1;
            }
        }
    }

    /*
    tailX[3] = tailX[2];
    tailY[3] = tailY[2];

    tailX[2] = tailX[1];
    tailY[2] = tailY[1];

    tailX[1] = tailX[0];
    tailY[1] = tailY[0];

    tailX[0] = playerX;
    tailY[0] = playerY;
    */

    tailX[0] = playerX;
    tailY[0] = playerY;

    /*
    if (nTail > 0)
    {
        for (int k = nTail; k >= 1; k--)
        {
            tailX[k] =
        }
    }
    */

    if (direction == 1)
    {
        playerY--;
    }
    else if (direction == 2)
    {
        playerX--;
    }
    else if (direction == 3)
    {
        playerY++;
    }
    else if (direction == 4)
    {
        playerX++;
    }
}

int main()
{

    while (end_game == 0)
    {
        draw_arena_and_character();
        input();
        logic();
    }

    system("cls");
    cout << "You died!" << endl;
    cout << "Points: " << points;

    int pause; cin >> pause; //Pause the program
}