// by daemonicky
if (grab_can)
...
	// handle slopes
	nudge_up = '0 0 0';
	while (nudge_up_z < 5)
	{
		if (PlayerCanGrabAround(self.origin + nudge_up, _radius/*hack*/,  4 * 4))
		{
			setorigin(self, self.origin+nudge_up);
			grab_z += nudge_up_z;
			break;
		}
		nudge_up_z += 0.6;//0.5;
	}
	bprint(vtos(nudge_up));
	bprint("\n");

	if (PlayerCanGrab(_radius/*hack*/))
...