def METHOD_NAME(self):
    """
    Render the screen.
    """
    try:
        # This command has to happen before we start drawing
        self.clear()
        # Draw all the sprites.
        self.player_list.draw()
        self.wall_list.draw()
        self.enemy_list.draw()
        for enemy in self.enemy_list:
            if arcade.has_line_of_sight(self.player.position,
                                        enemy.position,
                                        self.wall_list):
                color = arcade.color.RED
            else:
                color = arcade.color.WHITE
            arcade.draw_line(self.player.center_x,
                             self.player.center_y,
                             enemy.center_x,
                             enemy.center_y,
                             color,
                             2)
    except Exception as e:
        print(e)