2048-homework/src/tui.c

#include "tui.h"
#include <stdio.h>
#include <curses.h>

const uint32_t space_between_cells_x = 6;
const uint32_t space_between_cells_y = 2;

// entering and leaving screen using ANSI escape sequence
void tui_init() {
    initscr(); 
    cbreak(); 
    noecho();
    nonl(); 
    intrflush(stdscr, FALSE); 
    keypad(stdscr, TRUE);
}
void tui_destroy() {}

void tui_loop(Game *game) {
    while(true){
        // printing the game state is fun
        clear();
        for (size_t i = 0; i < game->field_size_y; i++) {
            for (size_t j = 0; j < game->field_size_x; j++) {
                mvprintw(i * space_between_cells_y, j * space_between_cells_x, "%d", game->field[i][j]);
            }
        }

        char input = getch();
        Direction dir = NoDirection;
        // these are not magic numbers
        // these are just codes for arrows,
        // numpad and Vim bindings
        switch (input) {
            case 3:
            case 107:
            case 56:
                dir = Up;
                break;
            case 2:
            case 106:
            case 50:
                dir = Down;
                break;
            case 4:
            case 104:
            case 52:
                dir = Left;
                break;
            case 5:
            case 108:
            case 54:
                dir = Right;
                break;
        }
        game_move(game, dir);
    }
}