Class: Archaeopteryx::Drum

Inherits:

Object

• Object
• Archaeopteryx::Drum

show all

Defined in:

lib/drum.rb

Instance Attribute Summary (collapse)

• - (Object) next

  Returns the value of attribute next.

• - (Object) note

  Returns the value of attribute note.

• - (Object) number_generator

  Returns the value of attribute number_generator.

• - (Object) probabilities

  Returns the value of attribute probabilities.

• - (Object) when

  Returns the value of attribute when.

Instance Method Summary (collapse)

• - (Object) generate (also: #mutate)
• - (Drum) initialize(attributes) constructor

  A new instance of Drum.

• - (Boolean) play?(beat)

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# File 'lib/drum.rb', line 4

def initialize(attributes)
  %w{note probabilities when next number_generator}.each do |attribute|
    eval("@#{attribute} = attributes[:#{attribute}]")
  end
  @queue = [attributes[:when]]
  generate
end

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# File 'lib/drum.rb', line 3

def next
  @next
end

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# File 'lib/drum.rb', line 3

def note
  @note
end

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# File 'lib/drum.rb', line 3

def number_generator
  @number_generator
end

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# File 'lib/drum.rb', line 3

def probabilities
  @probabilities
end

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# File 'lib/drum.rb', line 3

def when
  @when
end

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

def generate
  beats_on_which_to_play = []
  @probabilities.each_with_index do |probability, index|
    beats_on_which_to_play << index if @number_generator[] <= probability
  end
  @queue << L{|beat| beats_on_which_to_play.include? beat}
  @when = @next[@queue]
end

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# File 'lib/drum.rb', line 11

def play?(beat)
  @when[beat]
end