[RGSS/2/3] Missing Audio Replacer

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# Missing Audio Replacer
# Version: 1.00
# Author : LiTTleDRAgo
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($imported ||= {})[:drg_missing_audio_replacer] = 1.00
#==============================================================================
# ** Audio
#------------------------------------------------------------------------------
#  This class handles audio. Background music, etc. is managed here
#==============================================================================
class << Audio
  #--------------------------------------------------------------------------
  # * CONFIGURATION
  #--------------------------------------------------------------------------
  BGM_REPLACE = {
    'Title_Music'    => ['064-Slow07'],
    }

  BGS_REPLACE = {
    'Rain'           => ['005-Rain01', '006-Rain02'],
    }

  ME_REPLACE = {
    'Battle_Victory' => ['001-Victory01'],
    }

  SE_REPLACE = {
    'Cat'            => ['067-Animal02'],
    'Horse'          => ['071-Animal06'],
    }
  #--------------------------------------------------------------------------
  # * CONFIGURATION END
  #--------------------------------------------------------------------------
  @@sound_check = {}
  #--------------------------------------------------------------------------
  # * Play Background Music
  #     bgm : background music to be played
  #--------------------------------------------------------------------------
  [:bgm,:bgs,:me,:se].each do |method|
    $@ || alias_method(:"#{method}_exist_play", :"#{method}_play")
    define_method(:"#{method}_play") do |*bgm|
      bgm[0] = sound_exist?(File.basename(bgm[0]), method) || ''
      send(:"#{method}_exist_play",*bgm) rescue send(:"#{method}_stop")
    end
  end
  #--------------------------------------------------------------------------
  # * Determine if Audio Exist
  #--------------------------------------------------------------------------
  def sound_exist?(sound,type)
    key = [sound,type]
    return @@sound_check[key] if @@sound_check[key] != nil
    all_sound = [sound] + (eval("#{type.to_s.upcase}_REPLACE")[sound] || [])
    @@sound_check[key] = all_sound.map {|s| "Audio/#{type}/#{s}"}.find do |s|
      [se_exist_play(s, 0, 0), se_stop] rescue false
    end || false
  end
end