Class: CityObject

Inherits:
Object
  • Object
show all
Defined in:
lib/ttr/objects/city.rb

Overview

Copyright © 2011 Jesse Sielaff

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name) ⇒ CityObject

Returns a new instance of CityObject.



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# File 'lib/ttr/objects/city.rb', line 7

def initialize (name)
  @name = name
  @route_objs = []
  @connected_city_objs = []
end

Instance Attribute Details

#connected_city_objs ⇒ Object (readonly)

Returns the value of attribute connected_city_objs.



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# File 'lib/ttr/objects/city.rb', line 13

def connected_city_objs
  @connected_city_objs
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/ttr/objects/city.rb', line 13

def name
  @name
end

#route_objs ⇒ Object (readonly)

Returns the value of attribute route_objs.



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# File 'lib/ttr/objects/city.rb', line 13

def route_objs
  @route_objs
end

Instance Method Details

#add_route_obj(route_obj) ⇒ Object

Adds the given Route to the City’s Routes.



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# File 'lib/ttr/objects/city.rb', line 17

def add_route_obj (route_obj)
  @route_objs << route_obj
  @connected_city_objs |= (route_obj.city_objs - [self])
end

#connected?(city_obj) ⇒ Boolean

Returns true if the two Cities are connected by a single direct Route, false otherwise.

Returns:

  • (Boolean) 


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# File 'lib/ttr/objects/city.rb', line 25

def connected? (city_obj)
  @connected_city_objs.include?(city_obj)
end

#connected_using?(city_obj, route_objs) ⇒ Boolean

Returns true if the two Cities are connected using any combination of the given Routes.

Returns:

  • (Boolean) 


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# File 'lib/ttr/objects/city.rb', line 32

def connected_using? (city_obj, route_objs)
  valid_routes = route_objs & @route_objs
  return false if valid_routes.empty?
  
  valid_routes.any? do |obj|
    return true if obj.connects?(self, city_obj)
    
    obj.city_objs.any? do |c_obj|
      next if c_obj == self
      c_obj.connected_using?(city_obj, route_objs - valid_routes)
    end
  end
end

#routes_to(city_obj) ⇒ Object

Returns an Array of the Routes directly connecting the two Cities.



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# File 'lib/ttr/objects/city.rb', line 48

def routes_to (city_obj)
  @route_objs.select {|obj| obj.connects?(self, city_obj) }
end