EventLocationSaver

###############################################################################
#                   Event Location Saver
#                       By: Ixfuru
#                      August 18, 2013
################################################################################
#
# This script saves the location of an event and holds this place even after
# transfers to different maps.  To use the script, utilize the following
# script calls:
#
# To save the position of an event, use:
#-------------------------------------------------------------------------------
#  $game_map.save_ev_loc(event_id, x, y)
#
#   event_id: the event you wish to lock into a position
#   x: the x position where you want the event to stay
#   y: the y position where you want the event to stay
#-------------------------------------------------------------------------------
#
# To free a locked event, use:
#-------------------------------------------------------------------------------
# $game_map.free_ev_loc(event_id)
#
# event_id: the id of the event you wish to free from its saved position
#-------------------------------------------------------------------------------
################################################################################
#                       Give credit to Ixfuru
################################################################################

################################################################################
#  CLASS GAME EVENT
################################################################################
class Game_Event < Game_Character

  #-----------------------------------------------------------------------------
  # Move to Saved Location
  #-----------------------------------------------------------------------------
  def moveto_saved_location
    loc = $game_map.evlocsaves[@map_id][@id]
    moveto(loc[0], loc[1])
  end

end

################################################################################
# CLASS GAME MAP
################################################################################
class Game_Map

  attr_accessor :evlocsaves

  #-----------------------------------------------------------------------------
  # Initialize (Aliased)
  #-----------------------------------------------------------------------------
  alias ixgmapinit initialize unless $@
  def initialize
    ixgmapinit
    @evlocsaves = {}
  end

  alias ixgmapsetup setup unless $@
  def setup(map_id)
    ixgmapsetup(map_id)
    @events.each_key { |event|
    if @evlocsaves.has_key?(map_id) && @evlocsaves[map_id].has_key?(event)
      $game_map.events[event].moveto_saved_location
    end
    }
  end

  #-----------------------------------------------------------------------------
  # Save Ev Loc (Save Event Location)
  # event_id: id of the event you wish to save
  # x: map x corresponding to where you want the event to be
  # y: map y corresponding to where you want the event to be
  #------------------------------------------------------------------------------
  def save_ev_loc(event_id, x, y)
    @evlocsaves[@map_id] = Hash[event_id, [x,  y]]
  end

  #-----------------------------------------------------------------------------
  # Free Ev Loc
  # called to free the event from its saved location
  # event_id: the id of the event you wish to free
  #-----------------------------------------------------------------------------
  def free_ev_loc(event_id)
    if @evlocsaves[@map_id].has_key?(event_id)
      @evlocsaves[@map_id].delete(event_id)
    end
  end

end