Class: TicTacToe::Cursor

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

Constant Summary collapse

OutOfBounds = 
Class.new(StandardError)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(field = nil, board) ⇒ Cursor

Returns a new instance of Cursor.

Raises:



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# File 'lib/tic_tac_toe/cursor.rb', line 7

def initialize(field = nil, board)
  @field  = field || board.fields.first
  @board  = board

  raise OutOfBounds unless @board.fields.include?(@field)
end

Instance Attribute Details

#field ⇒ Object (readonly)

Returns the value of attribute field.



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# File 'lib/tic_tac_toe/cursor.rb', line 5

def field
  @field
end

Instance Method Details

#move(direction) ⇒ Object 



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# File 'lib/tic_tac_toe/cursor.rb', line 14

def move(direction)
  send(direction)
rescue TicTacToe::Cursor::OutOfBounds
  self
end