extern crate tcod;

use tcod::{Console, RootConsole, Color, BackgroundFlag};
use tcod::colors;


fn main() {
    let mut con = RootConsole::initializer()
        .size(80, 50)
        .title("Using colours with libtcod")
        .init();
    con.set_default_background(colors::DARKEST_GREEN);
    con.set_default_foreground(colors::LIGHTER_AZURE);

    con.clear();
    // Uses the default foreground and background:
    con.put_char(40, 25, '@', BackgroundFlag::Set);
    // Custom foreground and background:
    con.put_char_ex(42, 25, '!', Color{r: 240, g: 13, b: 20}, Color{r: 0, g: 0, b: 0});

    let black = Color::new(0, 0, 0);
    let red = Color::new(200, 0, 0);

    con.put_char_ex(30, 30, '.', black, red);
    con.put_char_ex(32, 30, '.', black, red * Color::new(200, 0, 0));
    con.put_char_ex(34, 30, '.', black, red * 0.3);
    con.put_char_ex(36, 30, '.', black, red + Color::new(25, 60, 0));
    con.put_char_ex(36, 30, '.', black, red - Color::new(25, 60, 0));
    con.put_char_ex(38, 30, '.', black, colors::lerp(red, black, 0.8));

    let (h, s, v) = red.hsv();
    println!("Red colour's hue: {}, saturation: {}, value: {}", h, s, v);

    con.flush();

    // Press any key to exit:
    con.wait_for_keypress(true);
}