if place_meeting (x,y,o_ladder)
{
	if (keyboard_check(vk_up))
	{
		x = other.x+16;
		y -= 6;
		gravity = 0;
	}
	if (keyboard_check(vk_down))
	{
		x = other.x+16;
		y -= -6;
		gravity = 0;
	}
}