Showing only specific skills in a window

[DerVVulfman]

The trick is to make them not load in the window at all.

Code:

#===============================================================================
# ** Skill Equipment System : Specified Skills Add-on
#------------------------------------------------------------------------------
#    by DerVVulfman
#    based on work by game guy
#    version 1.0
#    01-11-2016 (mm/dd/yyyy)
#    RGSS / RPGMaker XP
#
#==============================================================================
#
#  INTRODUCTION:
#
#  This script allows you to specify which skills may be shown in the
#  Skill Equipment system by game guy.
#
#
#------------------------------------------------------------------------------
#
#  INSTRUCTIONS:
#
#  Paste this add-on below game guy's original script,  and fill the
#  array in this script's GameGuy module with the IDs of skills that
#  are to be shown.
#
#
#==============================================================================
#
#  TERMS AND CONDITIONS:
#
#  Free for use, even in commercial games.
#
#==============================================================================

module GameGuy
  SKILLS_DISPLAYED = [57]   # Only adds these skills
                            # (currently just set to Crosscut)
end


#==============================================================================
# ** Window_GGAPSkillEquip
#------------------------------------------------------------------------------
#  This window displays equipable skills on the Skill Equip menu.
#==============================================================================

class Window_GGAPSkillEquip < Window_Selectable
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
    # Clear all contents
    if self.contents != nil
      self.contents.dispose
      self.contents = nil
    end
    # Erase data, start new
    @data = []
    # Cycle through player E-Skills
    for i in 0...@actor.eskills.size
      # Skip if it is not in our special array
      next unless GameGuy::SKILLS_DISPLAYED.include?(@actor.eskills[i])
      # Get the skill
      skill = $data_skills[@actor.eskills[i]]
      # Push into the array as long as it is not nil
      @data.push(skill) unless skill.nil?
    end
    # Get the number of data records
    @item_max = @data.size
    # Exit if no items
    return unless @item_max > 0
    # Make contents
    self.contents = Bitmap.new(width - 32, row_max * 32)
    # Cycle through item count
    for i in 0...@item_max
      # Draw each item by ID
      draw_item(i)
    end
  end
end