---

#include <ncurses.h>

const int X_SIZE = 80;
const int Y_SIZE = 25;
const int RACKET_SIZE = 3;
const int LEFT_X = 3;
const int RIGHT_X = X_SIZE - LEFT_X - 1;

void print_field(int ball_x, int ball_y, int racket_left_y, int racket_right_y) {
    int x, y;
    for (y = 0; y < Y_SIZE; y++) {
        for (x = 0; x < X_SIZE; x++) {
            if (y == 0 || y == Y_SIZE - 1) {
                printw("-");
            } else if (x == ball_x && y == ball_y) {
                printw("o");
            } else if (x == LEFT_X && y >= racket_left_y && y < racket_left_y + RACKET_SIZE) {
                printw("|");
            } else if (x == RIGHT_X && y >= racket_right_y && y < racket_right_y + RACKET_SIZE) {
                printw("|");
            } else if (x == X_SIZE / 2) {
                printw("|");
            } else {
                printw(" ");
            }
        }
        printw("\n");
    }
}

void print_score(int score_left, int score_right) {
    int margin_left = 27;
    printw("\n");
    for (int i = 0; i < margin_left; i++) printw(" ");
    printw("          SCORE\n\n");
    for (int i = 0; i < margin_left; i++) printw(" ");
    printw("Player 1          Player 2\n\n");
    for (int i = 0; i < margin_left; i++) printw(" ");
    printw("   %d                 %d  \n", score_left, score_right);
}

int main() {
    initscr();
    cbreak();     
    noecho();            
    keypad(stdscr, TRUE);
    curs_set(0);      


    int ball_x = X_SIZE / 2, ball_y = Y_SIZE / 2;
    int ball_dx = 1, ball_dy = 1;
    
    int racket_left_y = Y_SIZE / 2 - 1;
    int racket_right_y = Y_SIZE / 2 - 1;
    
    int score_left = 0, score_right = 0;
    int game_running = 1;

    while (game_running) {
        clear();
        print_field(ball_x, ball_y, racket_left_y, racket_right_y);
        print_score(score_left, score_right);
        refresh();

        int ch = getch(); 

        if (ch == 'a' || ch == 'A') {
            if (racket_left_y > 1) racket_left_y--;
        } else if (ch == 'z' || ch == 'Z') {
            if (racket_left_y < Y_SIZE - RACKET_SIZE - 1) racket_left_y++;
        } else if (ch == 'k' || ch == 'K') {
            if (racket_right_y > 1) racket_right_y--;
        } else if (ch == 'm' || ch == 'M') {
            if (racket_right_y < Y_SIZE - RACKET_SIZE - 1) racket_right_y++;
        } else if (ch == ' ') {
        } else if (ch == 27) { //escape значение = 27, которое возвращает функция getch() из ncurses 
            game_running = 0;
            break;
        }

        ball_x += ball_dx;
        ball_y += ball_dy;

        if (ball_y <= 1 || ball_y >= Y_SIZE - 2) {
            ball_dy = -ball_dy;
        }

        if (ball_x == LEFT_X + 1 && ball_y >= racket_left_y && ball_y < racket_left_y + RACKET_SIZE) {
            ball_dx = -ball_dx;
        }
        if (ball_x == RIGHT_X - 1 && ball_y >= racket_right_y && ball_y < racket_right_y + RACKET_SIZE) {
            ball_dx = -ball_dx;
        }

        if (ball_x <= 0) {
            score_right++;
            ball_x = X_SIZE / 2; ball_y = Y_SIZE / 2;
            ball_dx = 1;
        }
        if (ball_x >= X_SIZE - 1) {
            score_left++;
            ball_x = X_SIZE / 2; ball_y = Y_SIZE / 2;
            ball_dx = -1;
        }

        if (score_left == 21 || score_right == 21) {
            game_running = 0;
        }
    }

    endwin();
    return 0;
}