Class: SudokuItem

Inherits:
Object
  • Object
show all
Defined in:
lib/sudoku_item.rb

Instance Method Summary collapse

Constructor Details

#initialize(sudoku, value) ⇒ SudokuItem

Returns a new instance of SudokuItem.



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# File 'lib/sudoku_item.rb', line 5

def initialize sudoku, value
  @sudoku = sudoku
  set value
end

Instance Method Details

#position ⇒ Object 



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# File 'lib/sudoku_item.rb', line 22

def position
  @position || @sudoku.each_with_position do |element, x, y|
    return (@position = x.to_i, y.to_i) if element == self
  end
end

#related ⇒ Object 



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# File 'lib/sudoku_item.rb', line 28

def related
  (related_in_box + related_vertical + related_horizontal).uniq
end

#related_horizontal ⇒ Object 



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# File 'lib/sudoku_item.rb', line 40

def related_horizontal
  @sudoku.find_all {|item| (item.y == self.y) && (item != self)}
end

#related_in_box ⇒ Object 



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# File 'lib/sudoku_item.rb', line 32

def related_in_box
  @sudoku.find_all {|item| (same_box? item) && (item != self)}
end

#related_vertical ⇒ Object 



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# File 'lib/sudoku_item.rb', line 36

def related_vertical
  @sudoku.find_all {|item| (item.x == self.x) && (item != self)}
end

#same_box?(item) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sudoku_item.rb', line 44

def same_box? item
  (self.x / 3) == (item.x / 3) && (self.y / 3) == (item.y / 3)
end

#set(value) ⇒ Object 



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# File 'lib/sudoku_item.rb', line 18

def set value
  @value = value.to_i.zero? ? nil : value.to_i unless set?
end

#set? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/sudoku_item.rb', line 48

def set?
  not @value.nil?
end

#to_i ⇒ Object 



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# File 'lib/sudoku_item.rb', line 52

def to_i
  @value.to_i
end

#to_s ⇒ Object 



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# File 'lib/sudoku_item.rb', line 56

def to_s
  set? ? @value.to_s : ' '
end

#x ⇒ Object 



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# File 'lib/sudoku_item.rb', line 10

def x
  position.first
end

#y ⇒ Object 



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# File 'lib/sudoku_item.rb', line 14

def y
  position.last
end