[RGSS] MMW H-Mode 7 Compatibility Patch

#============================================================================
# ** HM7::Surface
# V.1.3 : modifications to handle wall events
#============================================================================
# PLACE MMW and MMW - HM7 PATCH BELOW H-MODE 7 SCRIPT

module HM7
  class Surface
    alias drg_mmw_hm7upd update unless method_defined?(:drg_mmw_hm7upd) ||
                                      !method_defined?(:update)
    def update
      drg_mmw_hm7upd
      @character.rev_scr_xy = [screen_x, screen_y]
    end

    def screen_x() (@screen_x1+@screen_x2)/2  end
    def screen_y() (@screen_y1+@screen_y2)/2 + $game_temp.camera_altitude end
  end
end