extern crate piston_window;
use piston_window::*;

mod engine;
use engine::Tile;

fn main() {
    let mut window: PistonWindow =
        WindowSettings::new("Rustenstein", [640, 480])
        .exit_on_esc(true)
        .resizable(false)
        .build()
        .unwrap_or_else(|e| { panic!("Failed to build PistonWindow: {}", e) });

    let mut engine = engine::Engine::new(window.size());

    let tiles = vec![
        Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall,
        Tile::Wall, Tile::Empty, Tile::Empty, Tile::Empty, Tile::Wall,
        Tile::Wall, Tile::Empty, Tile::Empty, Tile::Empty, Tile::Wall,
        Tile::Wall, Tile::Empty, Tile::Empty, Tile::Empty, Tile::Wall,
        Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall, Tile::Wall,
    ];
    let level = engine::Level {
        width:5,
        height: 5,
        tiles
    };
    engine.load_level(level);

    while let Some(event) = window.next() {
        if let Some(Button::Keyboard(key)) = event.press_args() {
            match key {
                Key::W => engine.add_movement(engine::Movement::Forward),
                Key::S => engine.add_movement(engine::Movement::Backward),
                Key::A => engine.add_movement(engine::Movement::TurnLeft),
                Key::D => engine.add_movement(engine::Movement::TurnRight),
                _ => (),
            };
        };

        window.draw_2d(&event, |context, graphics, _device| {
            engine.render(context, graphics);
        });

        if let Some(args) = event.update_args() {
            engine.update(args.dt);
        }

    }
}