Method getDY

src/Engine/Screen.cpp:575–578

* Gets the Vertical offset from the mid-point of the screen, in pixels. * @return the vertical offset. */

 * @return the vertical offset.
 */
int Screen::getDY()
{
	return (_baseHeight - ORIGINAL_HEIGHT) / 2;
}

/**
* Changes a given scale, and if necessary, switch the current base resolution.