src/main.rs

   1 pub mod display;
   2 pub mod game;
   3
   4 use crossterm::{cursor, event, execute, queue, style, terminal};
   5 use game::{Board, Dir::*, Pos};
   6 use std::io::Write;
   7
   8 fn main() {
   9     let mut rng = rand::thread_rng();
  10
  11     let mut stdout = std::io::stdout();
  12     queue!(stdout, terminal::EnterAlternateScreen, cursor::Hide).unwrap();
  13
  14     terminal::enable_raw_mode().unwrap();
  15
  16     let board = Board::new(Pos::new(4, 4));
  17     board.spawn(&mut rng);
  18     board.spawn(&mut rng);
  19
  20     let mut score = 0;
  21
  22     loop {
  23         queue!(
  24             stdout,
  25             terminal::Clear(terminal::ClearType::All),
  26             cursor::MoveTo(0, 0),
  27             style::SetAttribute(style::Attribute::Bold),
  28             style::Print("Score: ".to_string()),
  29             style::SetAttribute(style::Attribute::Reset),
  30             style::Print(score.to_string()),
  31             cursor::MoveToNextLine(1),
  32         )
  33         .unwrap();
  34         display::display_board(&mut stdout, &board).unwrap();
  35         stdout.flush().unwrap();
  36
  37         if let Ok(evt) = event::read() {
  38             match evt {
  39                 event::Event::Key(event::KeyEvent { code, .. }) => match code {
  40                     event::KeyCode::Char(ch) => {
  41                         if let Some(sc) = board.step(match ch.to_ascii_lowercase() {
  42                             'w' => Up,
  43                             'a' => Left,
  44                             's' => Down,
  45                             'd' => Right,
  46                             'q' => break,
  47                             _ => continue,
  48                         }) {
  49                             score += sc;
  50                             board.spawn(&mut rng);
  51                         }
  52                     }
  53                     _ => {}
  54                 },
  55                 _ => {}
  56             }
  57         } else {
  58             break;
  59         }
  60     }
  61
  62     terminal::disable_raw_mode().unwrap();
  63     execute!(stdout, cursor::Show, terminal::LeaveAlternateScreen).unwrap();
  64 }