#include <iostream>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include <windows.h>

using namespace std;

bool gameOver;
const int width = 20;
const int height = 20;
int x, y, fruitX, fruitY, score;
enum eDirection { STOP = 0, LEFT, RIGHT, UP, DOWN} ;
eDirection dir;

void Setup(){
    gameOver = false;
    dir = STOP;
    x = width / 2;
    y = height / 2;
    fruitX = rand() % width;
    fruitY = rand() % height;
    score = 0;
}

// #####
// #   #
// #   #
// #   #
// #####

void Draw(){
    // Gora
    system("cls"); //system("clear") - lin
    for (int i = 0; i < width+1; i++) // +2 - brakujace rogi
        cout << "#";
    cout << endl;

    // Bok
    for (int i = 0; i < height; i++){
        for (int j = 0; j < width; j++){
            if (j == 0)
                cout << "#";
            if (i == y && j == x)
                cout << "0";
            else if (i == fruitY && j == fruitX)
                cout << ".";
            else
                cout << " ";
    // Dol
            if (j == width-1)
                cout << "#";
        }
        cout << endl;
    }
    for (int i = 0; i < width+2; i++)
        cout << "#";
    cout << endl;
 cout << "Wynik: " << score << endl << endl;
 cout << "Wcisnij 'x' by zakonczyc" << endl;
}
// w
//a d
// s
void Input(){
    //keyboard hit
    if (_kbhit()){
        switch (_getch()){
        case 'a':
            dir = LEFT;
            break;
        case 'd':
            dir = RIGHT;
            break;
        case 'w':
            dir = UP;
            break;
        case 's':
            dir = DOWN;
            break;
        case 'x': // x = koniec
            gameOver = true;
            break;
        }
    }
}

void Logic(){

 switch (dir){
    case LEFT:
        x--;
        break;
    case RIGHT:
        x++;
        break;
    case UP:
        y--;
        break;
    case DOWN:
        y++;
        break;
    default:
        break;
 }
 //detekcja kolizji
 if (x > width || x < 0 || y > height || y < 0)
    gameOver = true;
 //zjadanie i dodawanie score
 if (x == fruitX && y == fruitY){
    score += 10;
    fruitX = rand() % width;
    fruitY = rand() % height;
 }
}

int main()
{
    Setup();
    while (!gameOver)
    {
        Draw();
        Input();
        Logic();
        //sleep(10);
    }
    while (gameOver)
    {
        cout << endl << "||| KONIEC GRY |||" << endl;
        cout << "||| Wynik: " << score << "   |||" << endl << endl;
        cout << "Pawel Krakowiak 22.10.2019" << endl;
        Sleep(3000);
        return 0;
    }

}