Help with NameError, No "pick_item_event" though it's added to Game_Interpreter Options

[Titanhex]

So I'm using [SSS] - Pick Item Event and I'm coming across this error.

It's explained only to call this item through the map. Well, I would like to call this scene through this custom Chat Menu script. I decided I'd give it a whirl, and this is the error I ran into when I tried:

Script 'Scene_Chat' line 96: NameError occurred.

undefined local variable or method 'pick_item_event' for #<Scene_Chat:0x337e168>

I understand this means the script can't see that method. But I don't see why as it's callable by a map and it is written into the game interpreter by the Pick Item Event script. (My understanding of RGSS isn't good though) It seems like this works when you assign a variable by calling the pick item event and returning it's value. Is there any easy fix?

[Show/Hide] Previous Issued SOLVED by Kread-Ex

So, I figured I'd show the class it's in and ask for some help pinpointing the issue. I'm still not familiarized with Ruby syntax, but I'm getting there. I can't detect anything wrong with line 211 and have tried backtracking over it to figure it out but to no avail.

CODE

class Window_Pick_Item_Help < Window_Base
  #--------------------------------------------------------------------------
  # * Initialize
  #--------------------------------------------------------------------------
  def initialize(pick_item_window)
    @pick_item_window = pick_item_window
    y = @pick_item_window.y - 56
    w = [@pick_item_window.width, 200].max
    x = Graphics.width - w
    super(x, y, w, 56)
    self.openness = 0
    refresh
  end
  #--------------------------------------------------------------------------
  # * Update
  #--------------------------------------------------------------------------
  def update
    super
    refresh if @last_item != @pick_item_window.item
  end
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
    self.contents.clear
    item = @last_item = @pick_item_window.item
    draw_icon(item.icon_index, 0, 0) #PROBLEM IS POINTED AT AS BEING HERE
    self.contents.draw_text(24, 0, contents.width - 24, WLH, item.name)
  end
end

This is the entire script:

[Show/Hide] SSS - Pick Item

CODE

#===========================================================================
====
#
# Shanghai Simple Script - Pick Item Event
# Last Date Updated: 2010.05.25
# Level: Easy
#
# This script prompts open a window to allow the player to select an item,
# weapon, or armor from the inventory to give the NPC, show the NPC, or whatever
# floats your boat. Works only on the map.
#===============================================================================
# Instructions
# -----------------------------------------------------------------------------
# To install this script, open up your script editor and copy/paste this script
# to an open slot below ��€“� Materials but above ��€“� Main. Remember to save.
#
# These commands go into the script call event. Use any one of these.
# $game_variables[1] = pick_item_event
# $game_variables[1] = pick_weapon_event
# $game_variables[1] = pick_armor_event
#
# This will return the selected item's item ID, weapon ID, or armor ID to the
# game variable you stored. 0 is returned if the player cancels.
#
# <key item>
# Place this tagin the noteboxes of your items, weapons, or armors to make
# you unable to select those items for the pick item event.
#===============================================================================

$imported = {} if $imported == nil
$imported["PickItemEvent"] = true

module SSS
  # This sets how many items will be shown by rows and columns.
  PICK_ITEM_ROWS = 8
  PICK_ITEM_COLS = 8
end

  #==========================================================================
====
  # RPG::BaseItem
  #==========================================================================
====

class RPG::BaseItem
  #--------------------------------------------------------------------------
  # key_item
  #--------------------------------------------------------------------------
  def key_item
    return @key_item if @key_item != nil
    @key_item = false
    self.note.split(/[\r\n]+/).each { |line|
    case line
    when /<(?:KEY_ITEM|key item)>/i
      @key_item = true
    end
  }
  return @key_item
  end
end

#==============================================================================
# ** Game_Interpreter
#==============================================================================

class Game_Interpreter
  #--------------------------------------------------------------------------
  # * Pick Item Event
  #--------------------------------------------------------------------------
  def pick_item_event
    return 0 unless $scene.is_a?(Scene_Map)
    return $scene.pick_item_event(:item)
  end
  #--------------------------------------------------------------------------
  # * Pick Weapon Event
  #--------------------------------------------------------------------------
  def pick_weapon_event
    return 0 unless $scene.is_a?(Scene_Map)
    return $scene.pick_item_event(:weapon)
  end
  #--------------------------------------------------------------------------
  # * Pick Armor Event
  #--------------------------------------------------------------------------
  def pick_armor_event
    return 0 unless $scene.is_a?(Scene_Map)
    return $scene.pick_item_event(:armor)
  end

end

#==============================================================================
# ** Window_Pick_Item
#==============================================================================

class Window_Pick_Item < Window_Selectable
  #--------------------------------------------------------------------------
  # * initialize
  #--------------------------------------------------------------------------
  def initialize(type)
  @type = type
  w = SSS::PICK_ITEM_COLS * 24 + 32
  x = Graphics.width - w
  h = [SSS::PICK_ITEM_ROWS * 24 + 32, Graphics.height - 184].min
  y = Graphics.height - h - 128
  super(x, y, w, h)
  self.index = 0
  self.openness = 0
  @column_max = SSS::PICK_ITEM_COLS
  @spacing = 0
  refresh
  end
  #--------------------------------------------------------------------------
  # * Item
  #--------------------------------------------------------------------------
  def item
  return @data[self.index]
  end
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
  @data = []
  case @type
  when :item, :items
  for item in $game_party.items
  next unless item.is_a?(RPG::Item)
  @data.push(item) if include?(item)
  end
  when :weapon, :weapons
  for item in $game_party.items
  next unless item.is_a?(RPG::Weapon)
  @data.push(item) if include?(item)
  end
  when :armor, :armors, :armour, :armours
  for item in $game_party.items
  next unless item.is_a?(RPG::Armor)
  @data.push(item) if include?(item)
  end
  end
  @item_max = @data.size
  create_contents
  for i in 0...@item_max
  draw_item(i)
  end
  end
  #--------------------------------------------------------------------------
  # * Include?
  #--------------------------------------------------------------------------
  def include?(item)
  return false if item.nil?
  return true
  end
  #--------------------------------------------------------------------------
  # * Draw Item
  #--------------------------------------------------------------------------
  def draw_item(index)
  rect = item_rect(index)
  self.contents.clear_rect(rect)
  item = @data[index]
  unless item.nil?
  icon = item.icon_index
  draw_icon(icon, rect.x, rect.y, enabled?(item))
  draw_item_amount(item, rect.clone)
  end
  end
  #--------------------------------------------------------------------------
  # * Enabled?
  #--------------------------------------------------------------------------
  def enabled?(item)
  return false if item.nil?
  return false if item.key_item
  return true
  end
  #--------------------------------------------------------------------------
  # * Draw Item Amount
  #--------------------------------------------------------------------------
  def draw_item_amount(item, rect)
  self.contents.font.size = 12
  number = $game_party.item_number(item)
  self.contents.font.color.alpha = enabled?(item) ? 255 : 128
  self.contents.draw_text(rect.x, rect.y + WLH/3, 24, WLH * 2/3, number, 2)
  end
  end

#==============================================================================
# ** Window_Pick_Item_Help
#==============================================================================

class Window_Pick_Item_Help < Window_Base
  #--------------------------------------------------------------------------
  # * Initialize
  #--------------------------------------------------------------------------
  def initialize(pick_item_window)
    @pick_item_window = pick_item_window
    y = @pick_item_window.y - 56
    w = [@pick_item_window.width, 200].max
    x = Graphics.width - w
    super(x, y, w, 56)
    self.openness = 0
    refresh
  end
  #--------------------------------------------------------------------------
  # * Update
  #--------------------------------------------------------------------------
  def update
    super
    refresh if @last_item != @pick_item_window.item
  end
  #--------------------------------------------------------------------------
  # * Refresh
  #--------------------------------------------------------------------------
  def refresh
    self.contents.clear
    item = @last_item = @pick_item_window.item
    draw_icon(item.icon_index, 0, 0)
    self.contents.draw_text(24, 0, contents.width - 24, WLH, item.name)
  end
end

#==============================================================================
# ** Scene_Map
#==============================================================================

class Scene_Map < Scene_Base
  #--------------------------------------------------------------------------
  # * Termination Processing
  #--------------------------------------------------------------------------
  alias terminate_sss_pick_item_event terminate unless $@

  def terminate
    unless @pick_item_window.nil?
      @pick_item_window.dispose
      @pick_item_window = nil
      @pick_item_help.dispose
      @pick_item_help = nil
    end
  terminate_sss_pick_item_event
  end
  #--------------------------------------------------------------------------
  # * Pick Item Event
  #--------------------------------------------------------------------------
  def pick_item_event(type = :item)
    case type
    when :item, :items, :weapon, :weapons, :armor, :armors, :armour, :armours
      @pick_item_window = Window_Pick_Item.new(type)
      @pick_item_help = Window_Pick_Item_Help.new(@pick_item_window)
    else
      return 0
    end
    value = 0
    @pick_item_window.open
    @pick_item_help.open
    loop do
      update_basic
      @pick_item_window.update
      @pick_item_help.update
      if Input.trigger?(Input::cool.gif)
        Sound.play_cancel
        value = 0
        break
      elsif Input.trigger?(Input::C)
        item = @pick_item_window.item
        if @pick_item_window.enabled?(item)
          Sound.play_decision
          value = item.id
          break
        else
          Sound.play_buzzer
        end
      end
  end
  @pick_item_window.close
  @pick_item_help.close
  loop do
    update_basic
    @pick_item_window.update
    @pick_item_help.update
    break if @pick_item_window.openness == 0
  end
    @pick_item_window.dispose
    @pick_item_window = nil
    @pick_item_help.dispose
    @pick_item_help = nil
    return value
  end
end

#===============================================================================
#
# END OF FILE
#
#===============================================================================

This post has been edited by Titanhex: Jul 13 2011, 06:00 AM

[Kread-EX]

This means the item is nil. I don't see why, though, but you could avoid the issue by placing return if item == nil just below item = @last_item = @pick_item_window.item.

[Titanhex]

Thank you Kread-Ex. That solved the problem perfectly and the script seems to work. (Though it's def. not plug & play) I think I've learned a little bit more (& remembered some scripting solutions) about getting scripts to work.

I have another issue with getting the script to work for my needs and modified the first post to update this and cut down on board clutter.

This post has been edited by Titanhex: Jul 12 2011, 02:43 PM

[Kread-EX]

Let's look at the pick_item_event method:

CODE

  def pick_item_event
    return 0 unless $scene.is_a?(Scene_Map)
    return $scene.pick_item_event(:item)
  end

Basically, if you are using a call script event command, the interpreter will trigger another pick_item_event, defined in the map scene. If you want to call this method from another scene, you need to copy the method from the map in your new scene.

[Titanhex]

I did notice that the $scene.pick_item_event(:item) does seem to be referencing itself, which I imagine isn't the case, so it makes sense now that you mention it's pointing to another method of pick_item_event.

Also, despite the fact that my head hurts, I am beginning to understand what some of this stuff is doing. I got the rest of it to work

This post has been edited by Titanhex: Jul 13 2011, 05:59 AM