player = new Player();
player.gun = new Gun();
hp = new HPBar();
monster = new MonsterHandler(); //not a single monster, but a class controlling randomly generated monsters
monster_controller = new MonsterWaveController();
dispenser = new Dispenser();
elements = new Elements();
border = new Rectangle(-5,-5,Game.app_x+5,ground_level+47); //Bullet rectangle border
background = new Background();
scene_handler = new SceneHandler();
sound_handler = new Sound();