Zenith Tactical Battle System problem (resolved. Sorta.)

[CursedBlackWolf 0]

Hey guys, I'm not good at scripting, but I've been learning how to, albeit very slowly. I recently switched to the Zenith Tactical Battle System (ZTBS)

in my current project, and the setup of everything went great, the script works with all my others, but for some reason I can't fathom, the battle maps don't work.

Every time I load up the game to test a map, I get this error message:

 

 

And here is the code section the error effects

 

  #--------------------------------------------------------------------------
 # ● State Animation refer to Database ID
 #--------------------------------------------------------------------------
 def state_animation_id
   if self.is_a?(Game_Player) or !$game_system.in_tactics or
      (!$game_system.tactics_actors.keys.include?(self.id) and
      !$game_system.tactics_enemies.keys.include?(self.id))
     return 0
   end
   # Actor uses applied animation as there battler would
   if $game_system.tactics_actors.keys.include?(self.id)
     battler = $game_system.tactics_actors[self.id]
   else
     battler = $game_system.tactics_enemies[self.id]
   end
   # If battler size is 0 then return with 0
   if battler.states.size == 0
     return 0
   end
   # Applies animation state id to battler
   return $data_states[battler.states[0]].animation_id
 end

 

Any help at all would be greatly appreciated!

Edited May 7, 2011 by CursedBlackWolf

[kellessdee 48]

Hmmm. I can't really tell... I do know that there is some issue with either the $game_system.tactics_actors or the $game_system.tactics_enemies...the error says there is no "keys" method defined for nil class. Thus it appears either tactics_actors or tactics_enemies has not been initialized at that time.

 

I would be able to help you more if I could see the full scripts or at least which line exactly is 302?

 

Also, are you using any other scripts outside that battle system script? There could be a conflict.

[CursedBlackWolf 0]

Hmmm. I can't really tell... I do know that there is some issue with either the $game_system.tactics_actors or the $game_system.tactics_enemies...the error says there is no "keys" method defined for nil class. Thus it appears either tactics_actors or tactics_enemies has not been initialized at that time.

 

I would be able to help you more if I could see the full scripts or at least which line exactly is 302?

 

Also, are you using any other scripts outside that battle system script? There could be a conflict.

 

Well, I'm fairly certain that it isn't any of the other scripts I'm using. Here's the full script. If needed, I'll just upload a demo game with the full thing.

I've also marked line 302.

 

#==============================================================================
# Zenith Tactical Battle System 
# Created By Zenith    (http://zenith.ifdef.jp/)
# Translated By Mac
# Battle AI
#------------------------------------------------------------------------------
# Battle set up and AI
#==============================================================================

class Game_System
 #--------------------------------------------------------------------------
 # ● Game System defines tactics
 #--------------------------------------------------------------------------
 attr_accessor :in_tactics            # Tactics Battle
 attr_accessor :tactics_turn          # Turns
 attr_accessor :tactics_phase         # Phases
 attr_accessor :tactics_step          # Step Movement
 attr_accessor :tactics_setup         # Battle Setup
 attr_accessor :tactics_actors        # Actor Setup
 attr_accessor :tactics_dead_actors   # Dead Actors
 attr_accessor :tactics_enemies       # Enemy Set Up
 #--------------------------------------------------------------------------
 # ● Tactical Battle Initialize
 #--------------------------------------------------------------------------
 alias ztbs_initialize initialize
 def initialize
   # Initialise tactic battle not activated
   ztbs_initialize
   @in_tactics = false
   @tactics_turn = 0
   @tactics_phase = 0
   @tactics_step = 0
   @tactics_setup = false
   @tactics_actors = {}
   @tactics_dead_actors = {}
   @tactics_enemies = {}
 end
end

class Game_Party
 #--------------------------------------------------------------------------
 # ● Game Party
 #--------------------------------------------------------------------------
 alias ztbs_item_can_use? item_can_use?
 def item_can_use?(item_id)
   if $game_system.in_tactics
     # If items number is equal to 0
     if item_number(item_id) == 0
       # Then return as unuseable
       return false
     end
     # If no actors are dead, revival items shall not be useable
     if [5, 6].include?($data_items[item_id].scope) and
        $game_system.tactics_dead_actors.size == 0
       return false
     end      
     return true
   else
     # But if actor is dead item becomes useable
     ztbs_item_can_use?(item_id)
   end
 end
end

class Game_Battler
 #--------------------------------------------------------------------------
 # ● Movability in battle defined by agility
 #--------------------------------------------------------------------------
 def movable
   n = agi / ZTBS::C_MOVABLE
   n = [[integer(n), 1].max, ZTBS::MOVABLE_MAX].min
   return n
 end
 #--------------------------------------------------------------------------
 # ● Skill usage
 #--------------------------------------------------------------------------
 alias ztbs_skill_can_use? skill_can_use?
 def skill_can_use?(skill_id)
   if $game_system.in_tactics
     # If skills haven't been marked for tactics
     if !$data_skills[skill_id].tactical?
       return false
     end
     # If skills cost more than own SP
     if $data_skills[skill_id].sp_cost > self.sp
       return false
     end
     # If the skill isn't for the right scope
     if [5, 6].include?($data_skills[skill_id].scope)
       if self.is_a?(Game_Actor)
         return false if $game_system.tactics_dead_actors.size == 0
       else
         return false
       end
     end
     # If character dead
     if dead?
       return false
     end
     # If the skills attack is equal to 0 and restricted
     if $data_skills[skill_id].atk_f == 0 and self.restriction == 1
       return false
     end
     return true
   else
     # If not then the skill is useable
     ztbs_skill_can_use?(skill_id)
   end
 end
 #--------------------------------------------------------------------------
 # ● Skills effects
 #--------------------------------------------------------------------------
 alias ztbs_skill_effect skill_effect
 def skill_effect(user, skill)
   if $game_system.in_tactics
     # Skill available in tactic battle
     $game_temp.in_battle = true
     # Effectiveness based upon actor and skill
     effective = ztbs_skill_effect(user, skill)
     # In normal battle the same does not apply
     $game_temp.in_battle = false
   else
     effective = ztbs_skill_effect(user, skill)
   end
   # Return to effective
   return effective
 end
 #--------------------------------------------------------------------------
 # ● Item effect
 #--------------------------------------------------------------------------
 alias ztbs_item_effect item_effect
 def item_effect(item)
   if $game_system.in_tactics
     # Item available in tactic battle
     $game_temp.in_battle = true
     # Defined by tactics effect
     effective = ztbs_item_effect(item)
     # In normal battle the same does not apply
     $game_temp.in_battle = false
   else
     effective = ztbs_item_effect(item)
   end
   # Return to effective
   return effective
 end
end

class Game_Enemy < Game_Battler
 #--------------------------------------------------------------------------
 # ● Game Enemy 
 #--------------------------------------------------------------------------
 alias ztbs_initialize initialize
 def initialize(troop_id, member_index)
   if troop_id == 0
     super()
     @enemy_id = member_index
     enemy = $data_enemies[@enemy_id]
     @hp = maxhp
     @sp = maxsp
   else
     ztbs_initialize(troop_id, member_index)
   end
 end
 #--------------------------------------------------------------------------
 # ● Tactical Action
 #--------------------------------------------------------------------------
 def make_tactical_action
   # Define tactical action with current action
   self.current_action.clear
   # Available actions for use (set in database, the rating affects how much 
   # they use that skill)
   available_actions = []
   rating_max = 0
   for action in self.actions
     # Upon turn appropiate action is chosen
     n = $game_system.tactics_turn
     a = action.condition_turn_a
     b = action.condition_turn_b
     if (b == 0 and n != a) or
        (b > 0 and (n < 1 or n < a or n % b != a % b))
       next
     end
     # If hp is bigger than action condition hp move on
     if self.hp * 100.0 / self.maxhp > action.condition_hp
       next
     end
     # If level is smaller then action condition level move on
     if $game_party.max_level < action.condition_level
       next
     end
     # If the switch id is that of the action condition id move on
     switch_id = action.condition_switch_id
     if switch_id > 0 and $game_switches[switch_id] == false
       next
     end
     # If action kind is equal to 1 and skill cant be used move on
     if action.kind == 1
       skill = $data_skills[action.skill_id]
       if !self.skill_can_use?(skill.id)
         next
       end
     end
     # If action rating gets bigger then action max then redefine action rating
     # to become action max
     available_actions.push(action)
     if action.rating > rating_max
       rating_max = action.rating
     end
   end
   # Restores that action rating
   ratings_total = 0
   for action in available_actions
     if action.rating > rating_max - 3
       ratings_total += action.rating - (rating_max - 3)
     end
   end
   # When the ratings total gets bigger then 0
   if ratings_total > 0
     # Randomise ratings total
     value = rand(ratings_total)
     # For actions available
     for action in available_actions
       if action.rating > rating_max - 3
         if value < action.rating - (rating_max - 3)
           self.current_action.kind = action.kind
           self.current_action.basic = action.basic
           self.current_action.skill_id = action.skill_id
           return
         else
           value -= action.rating - (rating_max - 3)
         end
       end
     end
   end
 end
end

class Game_Map
 #--------------------------------------------------------------------------
 # ● Game Map
 #--------------------------------------------------------------------------
 attr_reader :tactics_end_map           # End Of Tactics Map
 #--------------------------------------------------------------------------
 # ● TBS Setup
 #--------------------------------------------------------------------------
 alias ztbs_setup setup
 def setup(map_id)
   # Set Up Map ID
   ztbs_setup(map_id)
   # Load map info data from Data Folder
   $data_mapinfos = load_data("Data/MapInfos.rxdata") if $data_mapinfos.nil?
   map_name = $data_mapinfos[@map_id].name
   # Get tactic map end ID
   @tactics_end_map = get_tactics_end_map(@map_id)
   # If tactical battle map must include [T]
   $game_system.in_tactics = map_name.include?("[T]")
 end
end

class Game_Character
 #--------------------------------------------------------------------------
 # ● Battle Animation
 #--------------------------------------------------------------------------
 attr_accessor :appear                   # 出現
 attr_accessor :damage_pop               # ダメージ表示フラグ
 attr_accessor :damage                   # ダメージ値
 attr_accessor :critical                 # クリティカルフラグ
 attr_accessor :animation_id             # アニメーション ID
 attr_accessor :animation_hit            # アニメーション ヒットフラグ
 attr_accessor :white_flash              # 白フラッシュフラグ
 attr_accessor :blink                    # 明滅フラグ
 attr_accessor :collapse                 # コラプス
 attr_accessor :acted                    # 行動済み
 attr_accessor :effect                   # エフェクト中
 attr_accessor :invisible                # 不可視状態
 attr_accessor :not_update               # 更新禁止
 #--------------------------------------------------------------------------
 # ● TBS Anitialize
 #--------------------------------------------------------------------------
 alias ztbs_initialize initialize
 def initialize
   # When initialized the following statements are true
   ztbs_initialize
   @damage_pop = false
   @damage = nil
   @critical = false
   @animation_id = 0
   @animation_hit = false
   @white_flash = false
   @blink = false
   @collapse = 0
   @acted = false
   @effect = false
   @invisible = false
   @not_update = false
 end
 #--------------------------------------------------------------------------
 # ● State Animation refer to Database ID
 #--------------------------------------------------------------------------
 def state_animation_id
   if self.is_a?(Game_Player) or !$game_system.in_tactics or
      (!$game_system.tactics_actors.keys.include?(self.id) and   <---Line 302
      !$game_system.tactics_enemies.keys.include?(self.id))
     return 0
   end
   # Actor uses applied animation as there battler would
   if $game_system.tactics_actors.keys.include?(self.id)
     battler = $game_system.tactics_actors[self.id]
   else
     battler = $game_system.tactics_enemies[self.id]
   end
   # If battler size is 0 then return with 0
   if battler.states.size == 0
     return 0
   end
   # Applies animation state id to battler
   return $data_states[battler.states[0]].animation_id
 end
 #--------------------------------------------------------------------------
 # ● TBS Update
 #--------------------------------------------------------------------------
 alias ztbs_update update
 def update
   return if @not_update
   ztbs_update
   # If battle define on screen and in tactics battle
   if defined? $onscreen and $game_system.in_tactics
     # Make the on id true
     $onscreen[@id] = true
   end
 end
end

class Game_Event < Game_Character
 #--------------------------------------------------------------------------
 # ● Game Event < Game Character --- NameId referencing
 #--------------------------------------------------------------------------
 attr_reader     :name                  # 名前
 attr_reader     :move_frequency        # 移動頻度
 attr_reader     :erased                # 消去済み
 #--------------------------------------------------------------------------
 # ● This refers the event and mp id to the scripts which then refers to the
 # the database in which all events and maps shall be defined
 #--------------------------------------------------------------------------
 alias ztbs_e_initialize initialize
 def initialize(map_id, event)
   ztbs_e_initialize(map_id, event)
   @name = event.name
 end
 #--------------------------------------------------------------------------
 # ● Cancel Erase
 #--------------------------------------------------------------------------
 def cancel_erase
   @erased = false
   @appear = true
   @effect = true
 end
end

class Game_Player < Game_Character
 #--------------------------------------------------------------------------
 # ● Game Player < Game Character --- Defines the events animation action
 #--------------------------------------------------------------------------
 attr_accessor :through                  # Phasing Change
 attr_accessor :move_speed               # Movement Speed
 attr_accessor :through_original         # Phasing Original
 attr_accessor :speed_original           # Speed Defined
 #--------------------------------------------------------------------------
 # ● Initialises phasing and movement speed
 #--------------------------------------------------------------------------
 def initialize()
   super()
   @through_original = @through
   @speed_original = @move_speed
 end
 #--------------------------------------------------------------------------
 # ● Define increase in steps
 #--------------------------------------------------------------------------
 alias ztbs_increase_steps increase_steps
 def increase_steps
   super
   return if $game_system.in_tactics
   # Increase steps
   ztbs_increase_steps
 end
end

class Sprite_Character < RPG::Sprite
 #--------------------------------------------------------------------------
 # ● Update character sprite
 #--------------------------------------------------------------------------
 alias ztbs_update update
 def update
   if $game_system.in_tactics
     super
     # Changes old tile id, characer name or character hue to new
     if @tile_id != @character.tile_id or
        @character_name != @character.character_name or
        @character_hue != @character.character_hue
       # Changes old tile id, characer name and character hue to new
       @tile_id = @character.tile_id
       @character_name = @character.character_name
       @character_hue = @character.character_hue
    # If tile id is bigger than orequal to 384 create tile ID and Character Hue
       if @tile_id >= 384
         self.bitmap = RPG::Cache.tile($game_map.tileset_name,
           @tile_id, @character.character_hue)
         self.src_rect.set(0, 0, 32, 32)
         self.ox = 16
         self.oy = 32
       # Or in else cases create character
       else
         self.bitmap = RPG::Cache.character(@character.character_name,
           @character.character_hue)
         @cw = bitmap.width / 4
         @ch = bitmap.height / 4
         self.ox = @cw / 2
         self.oy = @ch
       end
     end
     # Visible when character in not transparent
     self.visible = (not @character.transparent)
     # Is tile ID is equal to 0
     if @tile_id == 0
       sx = @character.pattern * @cw
       sy = (@character.direction - 2) / 2 * @ch
       self.src_rect.set(sx, sy, @cw, @ch)
     end
     # Define x, y and z character screen
     self.x = @character.screen_x
     self.y = @character.screen_y
     self.z = @character.screen_z(@ch)
     # If set opacity is equal to 0 the character is defined as invisible
     if self.opacity == 0
       @character.invisible = true
     end
     unless @character.effect
       if @character.acted
         self.opacity = @character.opacity - 100
       elsif @character.invisible
         self.opacity = 0
       else
         self.opacity = @character.opacity
       end
       self.blend_type = @character.blend_type
       self.bush_depth = @character.bush_depth
     end
     @character.effect = effect?
     if @character.is_a?(Game_Player)
       return
     end
     # Loops state animation for character inflicited
     if @character.damage == nil and
        @character.state_animation_id != @state_animation_id and
        ($game_system.tactics_step < 6 or $game_system.tactics_step > 9) and
        ZTBS::STATE_ANIMATION
       @state_animation_id = @character.state_animation_id
       loop_animation($data_animations[@state_animation_id])
     end
     # When character animation ID is 0 use default hit animation
     if @character.animation_id != 0
       animation = $data_animations[@character.animation_id]
       animation(animation, @character.animation_hit)
       @character.animation_id = 0
     end
     # When characters turn the characters opacity returns to normal
     if @character.appear and
        ($game_system.tactics_step < 6 or $game_system.tactics_step > 8)
       @character.refresh
       @character.invisible = false
       self.opacity = @character.opacity
       appear
       @character.appear = false
     end
     # If character blink is on defined to character if not blink is off
     if @character.blink
       blink_on
     else
       blink_off
     end
     # Character white flash cannot happen if already whitened
     if @character.white_flash
       whiten
       @character.white_flash = false
     end
     # Display character damage as normal if not critcial
     if @character.damage_pop
       damage(@character.damage, @character.critical)
       @character.damage = nil
       @character.critical = false
       @character.damage_pop = false
     end
     # If character dies play actor die sound effect
     # If enemy dies play enemy die sound effect
     if @character.damage == nil and @character.collapse > 0
       case @character.collapse
       when 1
         $game_system.se_play($data_system.actor_collapse_se)
       when 2
         $game_system.se_play($data_system.enemy_collapse_se)
       end
       collapse
       @character.collapse = 0
       @character.effect = true
     end
   else
     # TBS Update
     ztbs_update
   end
 end
end

class Spriteset_Map
 #--------------------------------------------------------------------------
 # Map definition
 #--------------------------------------------------------------------------
 attr_reader     :viewport1              # Set map viewed (x, y, width, height)
 attr_accessor   :area_sprites           # Area sprites can move
 attr_accessor   :range_sprites          # Sprite range area
 attr_reader     :character_sprites      # Reads characters ID placement etc
 #--------------------------------------------------------------------------
 # ● オブジェクト初期化
 #--------------------------------------------------------------------------
 alias ztbs_initialize initialize
 def initialize
   if $game_system.in_tactics
     # ビューポートを作成
     @viewport1 = Viewport.new(0, 0, 640, 480)
     @viewport2 = Viewport.new(0, 0, 640, 480)
     @viewport3 = Viewport.new(0, 0, 640, 480)
     @viewport2.z = 200
     @viewport3.z = 5000
     # タイルマップを作成
     @tilemap = Tilemap.new(@viewport1)
     @tilemap.tileset = RPG::Cache.tileset($game_map.tileset_name)
     for i in 0..6
       autotile_name = $game_map.autotile_names[i]
       @tilemap.autotiles[i] = RPG::Cache.autotile(autotile_name)
     end
     @tilemap.map_data = $game_map.data
     @tilemap.priorities = $game_map.priorities
     # パノラマプレーンを作成
     @panorama = Plane.new(@viewport1)
     @panorama.z = -1000
     # フォグプレーンを作成
     @fog = Plane.new(@viewport1)
     @fog.z = 3000
     # エリアスプライトを作成
     @area_sprites = []
     # レンジスプライトを作成
     @range_sprites = []
     # 「簡易版マップ処理軽量化」でのエラー防止
     if defined? $onscreen
       # キャラクタースプライトを作成
       @character_sprites = []
       @party_sprites = []
       for i in $game_map.events.keys.sort
         sprite = Sprite_Character.new(@viewport1, $game_map.events[i])
         @character_sprites[i] = sprite
        $onscreen[i] = true
       end
       @party_sprites.push(Sprite_Cursor.new(@viewport1, $game_player.x, $game_player.y))
     else
       # キャラクタースプライトを作成
       @character_sprites = []
       for i in $game_map.events.keys.sort
         sprite = Sprite_Character.new(@viewport1, $game_map.events[i])
         @character_sprites.push(sprite)
       end
       @character_sprites.push(Sprite_Cursor.new(@viewport1, $game_player.x, $game_player.y))
     end
     # 天候を作成
     @weather = RPG::Weather.new(@viewport1)
     # ピクチャを作成
     @picture_sprites = []
     for i in 1..50
       @picture_sprites.push(Sprite_Picture.new(@viewport2,
         $game_screen.pictures[i]))
     end
     # Create new sprite timer
     @timer_sprite = Sprite_Timer.new
     # Update Sprite Timer
     update
   else
     ztbs_initialize
   end
 end
 #--------------------------------------------------------------------------
 # ● Define Effect
 #--------------------------------------------------------------------------
 def effect?
   # Checks for effects on character sprites
   for sprite in @character_sprites
     if sprite != nil and sprite.effect?
       return true
     end
   end
   return false
 end
 #--------------------------------------------------------------------------
 # ● 解放
 #--------------------------------------------------------------------------
 alias ztbs_dispose dispose
 def dispose
   ztbs_dispose
   return if !defined? @area_sprites
   # Disposes old memory of last sprites range in the area
   for sprite in @area_sprites + @range_sprites
     sprite.dispose
   end
 end
 #--------------------------------------------------------------------------
 # ● Updates The TBS
 #--------------------------------------------------------------------------
 alias ztbs_update update
 def update
   ztbs_update
   return if !defined? @area_sprites
   # Updates sprites range in the area
   for sprite in @area_sprites + @range_sprites
     sprite.update
   end
 end
end

class Window_Help < Window_Base
 #--------------------------------------------------------------------------
 # ● Window Help displays enemy and actor data in battle
 #--------------------------------------------------------------------------
 #==========================================================================
 #--------------------------------------------------------------------------
 # ● Refreshes the enemies data for the help window
 #--------------------------------------------------------------------------
 def refresh_actor(actor)
   @actor = nil
   set_actor(actor)
 end
 #--------------------------------------------------------------------------
 # ● Refreshes the enemies data for the help window
 #--------------------------------------------------------------------------
 def refresh_enemy(enemy)
   @actor = nil
   set_enemy(enemy)
 end
 #--------------------------------------------------------------------------
 # ● Setup enemy and actor data to be read correctly by help
 #--------------------------------------------------------------------------
 alias ztbs_set_enemy set_enemy
 def set_enemy(enemy)
   if $game_system.in_tactics and ZTBS::ENEMY_HPSP
     set_actor(enemy)
   else
     # 呼び戻す
     ztbs_set_enemy(enemy)
   end
 end
end

#==============================================================================
# ■ Scene_Load
#------------------------------------------------------------------------------
# Loads up the new tactical data aswell, so that if saved in battle previously
# then all shall resume as it was
#==============================================================================
class Scene_Load < Scene_File
 #--------------------------------------------------------------------------
 # ● Scene Load Tactics
 #--------------------------------------------------------------------------
 alias ztbs_read_save_data read_save_data
 def read_save_data(file)
   # Read old Tactics Save Data
   ztbs_read_save_data(file)
   # Load up previous tactics placement, turn, enemies etc.
   if $game_system.tactics_turn == nil
     $game_system.in_tactics = false
     $game_system.tactics_turn = 0
     $game_system.tactics_phase = 0
     $game_system.tactics_step = 0
     $game_system.tactics_setup = false
     $game_system.tactics_actors = {}
     $game_system.tactics_dead_actors = {}
     $game_system.tactics_enemies = {}
   end
 end
end

[kellessdee 48]

Hmm are you using any other scripts that overwrite the Game_System class? In the script you posted Game_System's initialization method is aliased, then overwritten creating a blank hash class "tactics_actors." In rpg maker the Game_System class is created when you start the game, so unless the tactics_actors hash isn't being created you should not get a nil class error. The only thing I can think of is if you have another script that overwrites the game_system class then there could be some compatibility issues, however it shouldn't be too hard to fix...

 

If you don't mind uploading the game demo I could definitely take a look for you.

 

At what point does the error pop-up for you?

[CursedBlackWolf 0]

Hmm are you using any other scripts that overwrite the Game_System class? In the script you posted Game_System's initialization method is aliased, then overwritten creating a blank hash class "tactics_actors." In rpg maker the Game_System class is created when you start the game, so unless the tactics_actors hash isn't being created you should not get a nil class error. The only thing I can think of is if you have another script that overwrites the game_system class then there could be some compatibility issues, however it shouldn't be too hard to fix...

 

If you don't mind uploading the game demo I could definitely take a look for you.

 

At what point does the error pop-up for you?

 

The error comes up during initialization of the battle scripts. Each battle has it's own separate map. Not sure if that helps. It's also not my script. I found it online, but I can't exactly remember where.

 

Here's my project.

Project Demo

[kellessdee 48]

Hmmm. This is indeed an interesting problem, I cannot find any compatibility issues within your scripts. What originally caught my attention was another script that aliased Game_System, but the way it was all written it shouldn't cause any issues.

 

The hashes are created upon starting the game, which could only mean somehow they are being set to nil.

 

Is there any script calls you make when starting a battle? (like through events) as I cannot see any part of the script changing that attribute to nil.

 

I wish I could help more, but I can't find any other issues. I will keep looking and let you know if I find anything

[CursedBlackWolf 0]

Hmmm. This is indeed an interesting problem, I cannot find any compatibility issues within your scripts. What originally caught my attention was another script that aliased Game_System, but the way it was all written it shouldn't cause any issues.

 

The hashes are created upon starting the game, which could only mean somehow they are being set to nil.

 

Is there any script calls you make when starting a battle? (like through events) as I cannot see any part of the script changing that attribute to nil.

 

I wish I could help more, but I can't find any other issues. I will keep looking and let you know if I find anything

 

I'll just have to keep experimenting. Thanks for the help anyway. Much appreciated.