Class: Woyo::Attributes::AttributesHash

Inherits:
Hash
  • Object
show all
Defined in:
lib/woyo/world/attributes.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ AttributesHash

Returns a new instance of AttributesHash.



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# File 'lib/woyo/world/attributes.rb', line 18

def initialize
  @listeners = {}
end

Instance Attribute Details

#listeners ⇒ Object (readonly)

Returns the value of attribute listeners.



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# File 'lib/woyo/world/attributes.rb', line 16

def listeners
  @listeners
end

Instance Method Details

#[]=(attr, value) ⇒ Object 



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# File 'lib/woyo/world/attributes.rb', line 27

def []= attr, value
  old_value = self[attr]
  super
  if value != old_value
    @listeners[attr].each { |listener| listener.notify attr, value } if @listeners[attr]  # attribute listeners (groups, etc..)
    @listeners[:*].each   { |listener| listener.notify attr, value } if @listeners[:*]    # wildcard listeners (trackers)
  end
end

#add_listener(attr, listener) ⇒ Object 



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# File 'lib/woyo/world/attributes.rb', line 22

def add_listener attr, listener
  @listeners[attr] ||= []
  @listeners[attr] << listener
end

#set ⇒ Object 



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# File 'lib/woyo/world/attributes.rb', line 14

alias_method :set, :[]=