"Turn movement" for VX Ace - events move only when the player moves

gistfile1.rb

module Kal
  module TurnMove
    # Enable or disable turn movement.
    ENABLE = true
    # If you want to use a switch to enable turn movement.
    SWITCH = nil      
    # Only events that have the following comment string as a comment
    # on their first page are affected. Set to nil or false if you don't
    # want to use this option.
    COMMENT = "turn-move"  
  end
end

class Game_Event
  
  alias_method :update_self_movement_turnmove_kal, :update_self_movement
  def update_self_movement
    return if is_turnmove_kal? && !$game_player.moving?
    update_self_movement_turnmove_kal
  end
  
  def is_turnmove_kal?
    return false unless Kal::TurnMove::ENABLE
    switch = Kal::TurnMove::SWITCH
    return false if switch && !$game_switches[switch]
    comment = Kal::TurnMove::COMMENT
    return false if comment && !has_comment_turnmove_kal?
    true
  end
    
  def has_comment_turnmove_kal?
    comments = @event.pages.first.list.select do |command|
      command.code == 108 || command.code == 408
    end
    comments.any? { |c| c.parameters.first.include?(Kal::TurnMove::COMMENT) }
  end
end