NoMethodError, help on fixing it

[gRaViJa 4]

I have a script that mimics psn/xbl Achievements. When trying to implement it to my game, i get a NoMethodError:

 

 

The method that causes this error is the part that will show an alert when the player gets a new achievement. (Here's that part of the code that produces the error, exact line of error: if $game_system.queue.size > 0 && @frame < 1)

 

#===============================================================================
# Graphics
#-------------------------------------------------------------------------------
# **added method to control and draw all queued achievements.
#===============================================================================
module Graphics
 class << self
   alias gg_upd_awards_queue_lat update
 end
 def self.update
   @frame = 0 if @frame == nil
if $game_system.queue.size > 0 && @frame < 1
     award = Awards::Award[$game_system.queue[0]]
     if award != nil
       @sprite = Sprite_Award.new(award)
       @frame = Awards::Popup_Time
       Audio.se_play("Audio/SE/#{Awards::Popup_Sound[0]}", 
         Awards::Popup_Sound[1], Awards::Popup_Sound[2])
     end
   end
   if @frame > 0
     @frame -= 1 
     if @frame < 1
       @sprite.dispose
       $game_system.queue.shift
     end
   end
   gg_upd_awards_queue_lat
 end
end

 

If i understand it right, this adds a method to module graphics to let it draw achievements. I have other scripts that possibly make edits to Graphics Module as well, so i think that causes the error? If so, is it possible to edit this script to fix the error without changing other scripts? Because then a tidal wave of other errors might occure.

 

Full script here:

 

http://www.text-upload.com/read.php?id=102621&c=7454606

 

Help is appreciated!

Edited July 11, 2011 by gRaViJa

[kellessdee 48]

Based on what I can see, I *think* the issue is that the Graphics module (specifically the update method) is called before the Game_System object is created; therefore when checking if $game_system.queue.size > 0, you get a nil class error (as $game_system hasn't been initialized, and thus is nil and there is no method called queue)

 

try replacing the script section you posted here with this: (it should stop that error at least; I guess we'll find out if it fixes everything too haha)

 

#===============================================================================
# Graphics
#-------------------------------------------------------------------------------
# **added method to control and draw all queued achievements.
#===============================================================================
module Graphics
 class << self
   alias gg_upd_awards_queue_lat update
 end
 def self.update
   unless $game_system == nil
     @frame = 0 if @frame == nil
     if $game_system.queue.size > 0 && @frame < 1
       award = Awards::Award[$game_system.queue[0]]
       if award != nil
         @sprite = Sprite_Award.new(award)
         @frame = Awards::Popup_Time
         Audio.se_play("Audio/SE/#{Awards::Popup_Sound[0]}", 
           Awards::Popup_Sound[1], Awards::Popup_Sound[2])
       end
     end
     if @frame > 0
       @frame -= 1 
       if @frame < 1
         @sprite.dispose
         $game_system.queue.shift
       end
     end
   end
   gg_upd_awards_queue_lat
 end
end

 

All i did, was put all the code that dealt with the game_system class inside an unless statement, so that the code ONLY executes when $game_system is not nil.

 

:o randomly i just realized something as well: the issue is probably within a script you have that uses the graphics module prior to the title screen opening... (as one of the first things the default title screen script does, is create the $game_system object...)

 

So this error is probably caused by some kind of graphical scene that occurs prior to the Scene_Title; perhaps a splash screen or a title skipping script? (not sure) Eitherway, this fix *SHOULD* fix this error. Lemme know how it works.

[gRaViJa 4]

1 try, 1 fix! Awesome job once again Kellesdee :) And i have a splashscreen script indeed. Your info also made sense, i understand what the error was. I've said it before and i'll say it again: if i needed a (paid) scripter for my project you would be the first person i'd ask ^^ But 99% of the scripting is done expect for a small error like this once in a while :)

 

Aaanyway, thanks!