Class: PathElement

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/polaris.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(location = nil, parent = nil) ⇒ PathElement

Returns a new instance of PathElement.



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# File 'lib/polaris.rb', line 71

def initialize(location=nil,parent=nil)
  @location = location
  @parent = parent
  @cost_to = 0
  @dist_from = 0
  @rating = 99_999
end

Instance Attribute Details

#cost_to ⇒ Object

Returns the value of attribute cost_to.



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# File 'lib/polaris.rb', line 70

def cost_to
  @cost_to
end

#dist_from ⇒ Object

Returns the value of attribute dist_from.



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# File 'lib/polaris.rb', line 70

def dist_from
  @dist_from
end

#location ⇒ Object

Returns the value of attribute location.



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# File 'lib/polaris.rb', line 69

def location
  @location
end

#parent ⇒ Object

Returns the value of attribute parent.



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# File 'lib/polaris.rb', line 69

def parent
  @parent
end

#rating ⇒ Object (readonly)

Returns the value of attribute rating.



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# File 'lib/polaris.rb', line 70

def rating
  @rating
end

Instance Method Details

#<=>(b) ⇒ Object 



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# File 'lib/polaris.rb', line 97

def <=>(b)
  a = self
  if a.rating < b.rating
    return -1
  elsif a.rating > b.rating
    return 1
  else
    0
  end
end

#==(other) ⇒ Object 



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# File 'lib/polaris.rb', line 108

def ==(other)
  return false if other.nil?
  @location == other.location
end

#reset_rating ⇒ Object 



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# File 'lib/polaris.rb', line 89

def reset_rating
  @rating = @cost_to + @dist_from
end

#to_s ⇒ Object 



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# File 'lib/polaris.rb', line 93

def to_s
  "#{@location} at cost of #{@cost_to} and rating of #{@rating}"
end