extern crate tcod;

use tcod::{Console, RootConsole, BackgroundFlag};
use tcod::input::Key;
use tcod::input::KeyCode::{Up, Down, Left, Right, Escape};

fn main() {
    let mut con = RootConsole::initializer()
        .size(80, 50)
        .title("libtcod Rust tutorial")
        .init();

    let mut x = 40;
    let mut y = 25;
    while !con.window_closed() {
        con.clear();
        con.put_char(x, y, '@', BackgroundFlag::Set);
        con.flush();
        let keypress = con.wait_for_keypress(true);
        // libtcod 1.5.1 has a bug where `wait_for_keypress` emits two events:
        // one for key down and one for key up. So we ignore the "key up" ones.
        if keypress.pressed {
            match keypress {
                Key { code: Escape, .. } => break,
                Key { code: Up, .. } => y -= 1,
                Key { code: Down, .. } => y += 1,
                Key { code: Left, .. } => x -= 1,
                Key { code: Right, .. } => x += 1,
                _ => {}
            }
        }
    }
}