public static void keyDown(long delta, int key) {
		switch (key) {
		case Keyboard.KEY_UP:
			Game.player.jump(delta);
			break;
		case Keyboard.KEY_LEFT:
			Game.player.move(delta, "left");
			break;
		case Keyboard.KEY_RIGHT:
			Game.player.move(delta, "right");
			break;
		default:
			System.err.println(Keyboard.getKeyName(key) + " is not supported");
		}
	}