returns the location one unit ahead of this location . concode_field_sep int yCoOrdinate concode_elem_sep int xCoOrdinate concode_field_sep XYLocation south concode_elem_sep int getXCoOrdinate concode_elem_sep XYLocation right concode_elem_sep int getYCoOrdinate concode_elem_sep XYLocation down concode_elem_sep XYLocation locationAt concode_elem_sep XYLocation east concode_elem_sep XYLocation left concode_elem_sep int hashCode concode_elem_sep boolean equals concode_elem_sep XYLocation west concode_elem_sep String toString concode_elem_sep XYLocation up
XYLocation function ( ) { return new XYLocation ( xCoOrdinate , yCoOrdinate - 1 ) ; }