Class: Rhythmmml::Scene::Main

Inherits:
Object
  • Object
show all
Includes:
Base
Defined in:
lib/rhythmmml/scene.rb

Instance Method Summary collapse

Constructor Details

#initialize(window) ⇒ Main

Returns a new instance of Main.



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# File 'lib/rhythmmml/scene.rb', line 83

def initialize(window)
  super
  @rhythms = []
  @sampling_rate = @window.options[:sampling_rate] || 22050
  rhythm_infos = Parser.new(@window.mml, @sampling_rate, @window.options).parse
  y = 0
  rhythm_infos.each do |rhythm_info|
    scale = rhythm_info[0]
    x_space = @window.width / 8
    case scale
    when /r/i
      y -= rhythm_info[1] * 60
      next
    when /c/i
      x = x_space * 1
    when /d/i
      x = x_space * 2
    when /e/i
      x = x_space * 3
    when /f/i
      x = x_space * 4
    when /g/i
      x = x_space * 5
    when /a/i
      x = x_space * 6
    when /b/i
      x = x_space * 7
    end
    rhythm = Object::Rhythm.new(@window, x, y, rhythm_info)
    @rhythms << rhythm
    @objects << rhythm
    y -= rhythm_info[1] * 60
  end

  @info = Object::Info.new(@window, @window.width * 0.7, 0)
  @objects << @info

  @bar_y = @window.height * 0.8
  @bar = Figure::Bar.new(@window,
                         0, @bar_y,
                         @window.width, @bar_y)
  @figures << @bar
  @format = WaveFile::Format.new(:mono, :pcm_8, @sampling_rate)
  @buffer_format = WaveFile::Format.new(:mono, :float, @sampling_rate)

  @guide = Gosu::Image.from_text(@window,
                                 "press space key",
                                 @font_path,
                                 20,
                                 4,
                                 @window.width,
                                 :center)
end

Instance Method Details

#button_down(id) ⇒ Object 



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# File 'lib/rhythmmml/scene.rb', line 146

def button_down(id)
  case id
  when Gosu::KbQ
    @window.scenes.shift
  when Gosu::KbSpace
    @rhythms.each do |rhythm|
      distance = (@bar_y - rhythm.y).abs
      if distance < 10
        @info.score += 10 - distance
        Dir.mktmpdir("rhythmmml") do |dir|
          path = File.join(dir, "a.wav")
          WaveFile::Writer.new(path, @format) do |writer|
            samples = sine_wave(*rhythm.info[2])
            buffer = WaveFile::Buffer.new(samples, @buffer_format)
            writer.write(buffer)
          end
          Gosu::Sample.new(@window, path).play
        end
        @objects.delete(rhythm)
        @rhythms.delete(rhythm)
        break
      end
    end
  end
end

#draw ⇒ Object 



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# File 'lib/rhythmmml/scene.rb', line 141

def draw
  super
  @guide.draw(0, @window.height * 0.9, ZOrder::TEXT)
end

#update ⇒ Object 



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# File 'lib/rhythmmml/scene.rb', line 137

def update
  super
end