core::line3df a1 = dev->GetIrrlichtDevice()->getSceneManager()->getSceneCollisionManager()->getRayFromScreenCoordinates(
		core::position2d<s32>(p1.Width - 128,p1.Height - 128),dev->GetIrrlichtDevice()->getSceneManager()->getActiveCamera());

	core::vector3df p = ((a1.end - a1.start).normalize()) * 12.0f * p1.Width / 800.0f;