Class: Robot

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

Constant Summary collapse

UNPLACED_NOTICE = 
"Robot should be placed first."

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(grid) ⇒ Robot

Returns a new instance of Robot.



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# File 'lib/robot.rb', line 9

def initialize(grid)
  @grid     = grid
  @position = Position.new(nil, nil, nil)
end

Instance Attribute Details

#position ⇒ Object (readonly)

Returns the value of attribute position.



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

def position
  @position
end

Instance Method Details

#move ⇒ Object 



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

def move
  update_position @position.advance
end

#place(position) ⇒ Object 



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

def place(position)
  update_position position
end

#placed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/robot.rb', line 35

def placed?
  @position.valid? @grid
end

#report ⇒ Object 



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# File 'lib/robot.rb', line 30

def report
  return UNPLACED_NOTICE unless placed?
  @position.to_s
end

#rotate_left ⇒ Object 



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

def rotate_left
  update_position @position.left
end

#rotate_right ⇒ Object 



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# File 'lib/robot.rb', line 26

def rotate_right
  update_position @position.right
end