Method update

src/main.rs:42–62

(&mut self, ctx: &mut Context)

impl State for GameState {
    fn update(&mut self, ctx: &mut Context) -> tetra::Result {
        if input::is_key_pressed(ctx, Key::F5) {
            *self = GameState::new(ctx)?;
        }

        self.resources.input.up =
            input::is_key_down(ctx, Key::Up) || input::is_key_down(ctx, Key::W);
        self.resources.input.down =
            input::is_key_down(ctx, Key::Down) || input::is_key_down(ctx, Key::S);
        self.resources.input.left =
            input::is_key_down(ctx, Key::Left) || input::is_key_down(ctx, Key::A);
        self.resources.input.right =
            input::is_key_down(ctx, Key::Right) || input::is_key_down(ctx, Key::D);

        systems::grant_energy(&mut self.world, &mut self.resources);
        systems::player_movement(&mut self.world, &mut self.resources);
        systems::basic_enemy_movement(&mut self.world, &mut self.resources);
        systems::process_movement(&mut self.world, &mut self.resources);

        Ok(())
    }

    fn draw(&mut self, ctx: &mut Context) -> tetra::Result {
        graphics::clear(ctx, Color::BLACK);