Method toggleShowAllLayers

src/Battlescape/Camera.cpp:555–559

* Toggles showing all map layers. * @return New layer setting. */

 * @return New layer setting.
 */
int Camera::toggleShowAllLayers()
{
	_showAllLayers = !_showAllLayers;
	return _showAllLayers?2:1;
}

/**
 * Checks if the camera is showing all map layers.