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

using namespace std;

void Postavka();
void Crtanje();
void Unos();
void Logika();

bool krajIgre;
const int width = 20;
const int height = 20;
int x, y, hranaX, hranaY, rezultat;
int repX[100], repY[100];
int rep;
enum Smjer { STANI = 0, LIJEVO, DESNO, GORE, DOLJE};
Smjer smjer;

int main()
{
    Postavka();
    while (!krajIgre) {
        Crtanje();
        Unos();
        Logika();
        Sleep(10);
    }
    return 0;
}

void Postavka(){
    krajIgre = false;
    smjer = STANI;
    x = width / 2;
    y = height / 2;
    hranaX = rand() % width;
    hranaY = rand() % height;
    rezultat = 0;
}

void Crtanje(){
    system("cls");
    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 == hranaY && j == hranaX)cout << "F";
            else{
                bool print = false;
                for (int k = 0; k < rep; k++){
                    if (repX[k] == j && repY[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 << "Rezultat:" << rezultat << endl;
}
void Unos(){

    if (_kbhit()){

        switch (_getch()) {
        case 'a':
            smjer = LIJEVO;
            break;
        case 'd':
            smjer = DESNO;
            break;
        case 'w':
            smjer = GORE;
            break;
        case 's':
            smjer = DOLJE;
            break;
        case 'x':
            krajIgre = true;
            break;
        }
    }
}
void Logika(){

    int prevX = repX[0];
    int prevY = repY[0];
    int prev2X, prev2Y;
    repX[0] = x;
    repY[0] = y;

    for (int i = 1; i < rep; i++){
        prev2X = repX[i];
        prev2Y = repY[i];
        repX[i] = prevX;
        repY[i] = prevY;
        prevX = prev2X;
        prevY = prev2Y;
    }

    switch (smjer){
    case LIJEVO:
        x--;
        break;
    case DESNO:
        x++;
        break;
    case GORE:
        y--;
        break;
    case DOLJE:
        y++;
        break;
    default:
        break;
    }

    if (x >= width) x = 0; else if (x < 0) x = width - 1;
    if (y >= height) y = 0; else if (y < 0) y = height - 1;

    for (int i = 0; i < rep; i++) if (repX[i] == x && repY[i] == y) krajIgre = true;

    if (x == hranaX && y == hranaY){
        rezultat += 10;
        hranaX = rand() % width;
        hranaY = rand() % height;
        rep++;
    }
}