oi <3

/*
CODE FOR THE SNAKE GAME IN THE CONSOLE WINDOW.
WILL NOT WORK ON SOLOLEARN.
COPY AND PASTE TO YOUR EDITOR (I USE VISUAL STUDIO).
HAVE FUN! ;)
*/


//#include "stdafx.h"
#include <iostream>
#include <conio.h>
#include <string>
#include <Windows.h>
using namespace std;

bool gameover;
bool shutDown;
const int width = 20;
const int height = 20;
int x, y, fruitX, fruitY, score;
int tailX[400], tailY[400], nTail;
enum eDirection {STOP, LEFT, RIGHT, UP, DOWN};
eDirection dir;

void HideCursor()
{
  CONSOLE_CURSOR_INFO cursor = {1, FALSE};
  SetConsoleCursorInfo(GetStdHandle(STD_OUTPUT_HANDLE), &cursor);
}
// cursor

void StartScreen()
{
    system("cls");
    cout << "\nWELCOME TO SNAKE CONSOLE!"
         << "\n\nHello, press 's' to Start!"
         << "\n\nPress 'q' to Quit"
         << "\n\nPress 'i' for Instructions."
         << "\n\nYour Previous Score: " << score << endl;
}
void Instructions()
{
    HideCursor();
    system("cls");
    cout << "\nUse the 'w' key to go UP."
         << "\n\nUse the 'a' key to turn LEFT."
         << "\n\nUse the 's' key to go DOWN."
         << "\n\nUse the 'd' key to turn RIGHT."
         << "\n\nPress the 'x' key any time during the game to EXIT."
         << "\n\nDO NOT touch the borders or you will LOSE."
         << "\nDO NOT reverse movement or you will LOSE."
         << "\nDO NOT eat your own tail or you will obviously also LOSE!"
         << "\n\n\nNow press the 'm' key to go MENU.\n";
    string input;
    cin >> input;
    if(input=="m")
        StartScreen();
}
void FruitSpawn()
{
    fruitX = rand() % width;
    fruitY = rand() % height;
}
void Setup()
{
    gameover = false;
    shutDown = false;
    dir = STOP;
    x = width / 2;
    y = height / 2;
    FruitSpawn();
    score = 0;
    nTail = 0;
}
void Draw()
{
    HideCursor();
    COORD coord;
    coord.X = 0;
    coord.Y = 0;
    SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);
    for (int i = 0; i < width + 2; i++) {
        cout << "#";}
    cout << endl;

    for (int i = 0; i < height; i++)
    {
        for (int j = 0; j < width; j++)
        {
            if (j == 0)
                cout << "#";

            if (i == y && j == x)
                cout << "O";

            else if (i == fruitY && j == fruitX)
                cout << "F";

            else {
                bool print = false;
                for (int k = 0; k < nTail; k++) {
                    if (tailX[k] == j && tailY[k] == i) {
                        cout << "o";
                        print = true;
                    }
                }
                if(!print)
                    cout << " ";
            }

            if (j == width - 1)
                cout << "#";
        }
        cout << endl;
    }
    for (int i = 0; i < width + 2; i++) {
        cout << "#";
    }
    cout << endl;
    cout << "Score: " << score << endl;
}
void Input()
{
    if (_kbhit()) {
        switch (_getch())
        {
        case 'a':
            dir = LEFT;
            break;
        case 'w':
            dir = UP;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'x':
            gameover = true;
            break;
        }
    }
}
void Logic()
{
    int prevX = tailX[0];
    int prevY = tailY[0];
    int prev2X, 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;

    }

    switch (dir)
    {
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    case UP:
        y--;
        break;
    case DOWN:
        y++;
        break;
    }
    if (x > width || x < 0 || y > height || y < 0) {
        gameover = true;
        StartScreen();
    }

    for (int i = 0; i < nTail; i++) {
        if (tailX[i] == x && tailY[i] == y)
            gameover = true;
    }

    if (x == fruitX && y == fruitY) {
        score++;
        nTail++;
        FruitSpawn();
    }
}
int main()
{
    HideCursor();
    do {
        StartScreen();
        string input;
        cin >> input;
        if (input == "s")
        {
            Setup();
            system("cls");
            while (!gameover)
            {
                Draw();
                Input();
                Logic();
                Sleep(100);
            }
        }
        else if (input == "i")
            Instructions();
        else if (input == "q")
            shutDown = true;
    } while (shutDown == false);

    return 0;
}