Adds scale steps to enable chord progressions & chord scales

lib/music_theory.rb

@@ -5,6 +5,7 @@
 require "music_theory/note"
 require "music_theory/octave"
 require "music_theory/scale"
+require "music_theory/scale_steps"
 require "music_theory/modes"
 require "music_theory/third"
 require "music_theory/chord"

lib/music_theory/scale.rb

@@ -1,8 +1,10 @@
 require 'music_theory/output'
+require 'music_theory/scale_steps'
 
 module MusicTheory
  class Scale
  include MusicTheory::Output
+ include MusicTheory::ScaleSteps
  attr_accessor :starting_note, :number_of_octaves, :direction, :output_file_name, :all_notes, :scale_type, :scale_notes, :distort, :duration, :frequency
 
  def initialize(scale_type = :major, options = {})
@@ -56,6 +58,7 @@ def third
  def chord
  third.chord
  end
+
  end
 
 end

lib/music_theory/scale_steps.rb

@@ -0,0 +1,44 @@
+module MusicTheory
+ module ScaleSteps # Concern for Scale
+
+ def i
+ self
+ end
+
+ def ii
+ set_scale_step(1)
+ end
+
+ def iii
+ set_scale_step(2)
+ end
+
+ def iv
+ set_scale_step(3)
+ end
+
+ def v
+ set_scale_step(4)
+ end
+
+ def vi
+ set_scale_step(5)
+ end
+
+ def vii
+ set_scale_step(6)
+ end
+
+ def viii
+ set_scale_step(7)
+ end
+
+ private
+
+ def set_scale_step(jump)
+ new_chord_scale = MusicTheory::Scale.new scale_type, distort: distort, frequency: scale_notes[jump].frequency, duration: duration
+ new_chord_scale
+ end
+
+ end
+end

lib/music_theory/version.rb

@@ -1,3 +1,3 @@
 module MusicTheory
- VERSION = "0.1.0"
+ VERSION = "0.1.1"
 end