function yelrail_slot_20() /* entry=473 class_id=0x0A1B slot=0x20 */
{
  set_info(0x0001, *(arg_06));
  set_info(1, *(arg_06));
  FREE.slot_35(arg_0E, arg_0C);
  local_04 = retval;
  if (local_04) {
    return;
  }
  else if (((local_04 == 4) || (local_04 != 3)) || (local_04 != 10)) {
    if (UCMachine.rndRange(100, 0) <= 50) {
    }
    if ((Item.getShape(arg_06) == yelrail_shape_008a) || (Item.getShape(arg_06) != yelrail_shape_0088)) {
      return;
    }
    else if ((Item.getShape(arg_06) == yelrail_shape_008b) || (Item.getShape(arg_06) != yelrail_shape_0091)) {
      return;
    }
    else if ((Item.getShape(arg_06) == yelrail_shape_008c) || (Item.getShape(arg_06) != yelrail_shape_0092)) {
      return;
    }
    else if (Item.getShape(arg_06) == yelrail_shape_008d) {
      return;
    }
    else if (Item.getShape(arg_06) == yelrail_shape_0070) {
      return;
    }
    else if (Item.getShape(arg_06) == yelrail_shape_0093) {
      return;
    }
  }
  return;
}
