#include <iostream>
#include <conio.h>
using namespace std;
bool gameover;
const int width = 20;
const int height = 20;
int x, y, fruitx, fruity, score;
int tailx[100], taily[100];
int nTail;
enum edirection{ STOP = 0, LEFT, RIGHT, UP, DOWN };
edirection dir;
void setup(){

	gameover = false;
	dir = STOP;
	x = width / 2 - 1;
	y = height / 2 - 1;
	fruitx = rand() % width;
	fruity = rand() % height;
	score = 0;
}

void draw(){
	system("cls");// system ("clear");
	for (int i = 0; i < width + 1; i++)
		cout << "#";
	cout << endl;


	for (int i = 0; i<height; i++){
		for (int j = 0; j<width; j++){
			if (j == 0 || j == width - 1)
				cout << "#";
			if (i == y&& j == x)
				cout << "0";
			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){
						print = true;
						cout << "o";
					}
				}
				if (!print)
					cout << " ";
			}
		}
		cout << endl;
	}
	for (int i = 0; i < width + 1; i++)
		cout << "#";
	cout << endl;
	cout << "score:" << score << endl;

	cout << "DASTURCHI:ELYOR NOSIROV" << endl;
}
void input(){
	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':
			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 - 1)
		x = 0;
	else if (x < 0)
		x = width - 2;
	if (y >= height)
		y = 0;
	else if (y < 0)
		y = height - 1;

	for (int i = 0; i < nTail; i++){

		if (tailx[i] == x&&taily[i] == y)
			gameover = true;
	}
	if (x == fruitx&&y == fruity){
		score += 10;
		fruitx = rand() % width;
		fruity = rand() % height;
		nTail++;
	}
}
int main(){
	setup();
	while (!gameover){
		draw();
		input();
		Logic();
	}
	return 0;
}