int function ( ) { return y + d [ 1 ] ; }
computes the y coordinate of neighboring adjacent cell for internal walls . if the wall is a border wall to the outside , then the resulting value is out of range as the cell does not exist . concode_field_sep int[] d concode_elem_sep int x concode_elem_sep int y concode_field_sep int getX concode_elem_sep int getY concode_elem_sep CardinalDirection getDirection concode_elem_sep int getNeighborX concode_elem_sep void setWall concode_elem_sep void setRandomly