Method update

src/Interface/FpsCounter.cpp:104–110

* Updates the amount of Frames per Second. */

 * Updates the amount of Frames per Second.
 */
void FpsCounter::update()
{
	int fps = (int)floor((double)_frames / _timer->getTime() * 1000);
	_text->setValue(fps);
	_frames = 0;
	_redraw = true;
}

/**
 * Draws the FPS counter.