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VXACEDoubleX RMVXA Unison Addon to Yanfly Engine Ace - Ace Battle Engine

BMM Archive · July 15, 2026

Preserved forum archive. This topic stores the original first post and locally mirrored RPG Maker Web attachments when available. It is posted by the BMMPlay archive account, not by the original creator.

Original Source

  • Original title: DoubleX RMVXA Unison Addon to Yanfly Engine Ace - Ace Battle Engine
  • Original author: DoubleX
  • Original date: July 22, 2015
  • Source thread: https://forums.rpgmakerweb.com/threads/doublex-rmvxa-unison-addon-to-yanfly-engine-ace-ace-battle-engine.42669/
  • Source forum path: Game Development Engines > Ruby Game System (RGSS) Scripts > RGSS3 Scripts (RMVX Ace)

Summary

Purpose Lets users make actor unison skills/items needing multiple actors to use Notetags Spoiler

Archived First Post

Purpose


Lets users make actor unison skills/items needing multiple actors to use


Notetags

Spoiler


Code:
#  * Skill/Item Notetags:                                                      |
#    1. <unison actors: ids>                                                   |
#       - Sets the list of id of actors needed for the skill/item as ids.      |
#         For example:                                                         |
#         <unison actors: 1> means actor with id 1 is required to use it       |
#         <unison actors: 4, 2> means actors with id 4 and 2 are needed        |
#       - All actors in list ids needs to be in the battle, inputable, able to |
#         use it and pay its cost. They'll all pay the cost after using it.    |
#         Only actors in list x can select it.                                 |
#    2. <unison def rule: rule                                                 |
#       - Sets the rule of setting user's def in the skill/item's damage       |
#         formula as rule, whose symbol is one of those in UNISON_RULES.       |
#       - The symbol of def must be included in UNISON_DEFS                    |
#       - This notetag needs to be written below <unison item: ids> to work.   |
#    3. <unison def actors: ids>                                               |
#       - Sets user's method def in the skill/item's damage formula to use its |
#         unison rule to combine those of actors with id includedin the list   |
#         ids. def needs to be able to take no arguments and return a Numeric  |
#         to work.                                                             |
#         For example:                                                         |
#         <unison atk actors: 1> means the user's atk in its damage formula    |
#         uses thatof actor with id 1                                          |
#         <unison mat actors: 4, 2> means the user's mat in its damage formula |
#         uses mat of actors with id 4 and 2 under the skill/item's unison rule|
#       - The symbol of def must be included in UNISON_DEFS                    |
#       - This notetag needs to be written below <unison item: ids> to work.   |



Configurations

Spoiler


Code:
    # Sets if the battlelog will show all actors involved in the unison skills
    # or items instead of only the one invoking them
    # If SHOW_UNISON_ACTOR_SWITCH_ID is a natural number, the state of switch
    # with id SHOW_UNISON_ACTOR_SWITCH_ID will be used instead
    SHOW_UNISON_ACTOR = true
    SHOW_UNISON_ACTOR_SWITCH_ID = 0

    # Sets the symbol of the rule used for setting the user's methods in the
    # damage formula by using those of the included unison actors
    # or items instead of only the one invoking them
    # It must return a symbol included in UNISON_RULES
    # If UNISON_DEF_RULE_VAR_ID is a natural number, the value of variable
    # with id UNISON_DEF_RULE_VAR_ID will be used instead
    UNISON_DEF_RULE = :avg
    UNISON_DEF_RULE_VAR_ID = 0

    # Implements the unison method rules
    # The unison method value of all unison battlers can be referneced by vals
    # The unison method rule symbol can be referenced by rule
    # It's a method under Game_BattlerBase
    # It must return a real number 
    UNISON_RULES = %Q(
  def unison_rules(vals, rule) # This line shalln't be changed
    if rule == :min
      vals.min
    elsif rule == :avg
      vals.inject(:+) / vals.size
    elsif rule == :max
      vals.max
    else
      0
    end
  end
    )

    # Sets the battler methods to use the unison method rules
    # Its keys must be the battler method name symbols
    # Methods with name method_name will be aliased to method_name_unison
    UNISON_DEFS = {

      # General Form:
      # [:method_class, :super_class] => [
      #   :method_name
      # ]

      [:Game_BattlerBase] => [
        :hp,
        :mp,
        :tp,
        :mhp,
        :mmp,
        :atk,
        :def,
        :mat,
        :mdf,
        :agi
        # Adds new methods here
        
      ],

      [:Game_Actor, :Game_Battler] => [
        :level
        # Adds new methods here
        
      ]

      # Adds new classes here
      

    }



Info

 





New Terms


Unison skill/item - Skill/item needing more than 1 battler to be used


Unison actors - All actors needed for the same unison skill/item


Unison invoker - The unison actor actually selecting and executing the unison skill/item


Unison invokee - Unison actor that's not the unison invoker


Empty action slot - An action slot without a skill/item but can be inputted with a skill/item


Inputted action slot - An action slot with a skill/item inputted


Reserved action slot - An action slot that can't be inputted with a skill/item


Actor inputable check


An actor's inputable if and only if that actor has at least 1 empty action slot. Only empty and inputted action slots can be selected.


Unison skill/item usability check


1. The actor trying to select an unison skill/item must be an unison actor of that skill/item


2. That actor must pass all the ordinary skill/item usability checks


3. For skills, all unison invokees must be movable, without autobattle nor confusion, meet the ordinary skill conditions, have learned that skill, and have at least 1 empty action slot or reserved action slot that is reserved by the currently inputted unison skill in the currently selected action slot


4. For items, all unison invokees must be movable and without autobattle nor confusion





Video










Games Using This Script


None so far


Prerequisites


Scripts:


1. Yanfly Engine Ace - Ace Battle Engine


2. DoubleX RMVXA Clear Addon to Yanfly Engine Ace - Ace Battle Engine


Abilities:


1. Little RGSS3 scripting proficiency to fully utilize this script


Terms Of Use


You shall:


1. Follow the terms of use of Yanfly Engine Ace - Ace Battle Engine


2. Keep this script's Script Info part's contents intact


You shalln't claim that this script's written by anyone other than DoubleX, his aliases, Yanfly, or his/her aliases


None of the above applies to Yanfly or his/her aliases


Instructions


1. Open the script editor and put this script into an open slot between DoubleX RMVXA Clear Addon to Yanfly Engine Ace - Ace Battle Engine and Main, save to take effect.


Authors


DoubleX:


1. This script


Yanfly:


1. Yanfly Engine Ace - Ace Battle Engine


Changelog

Spoiler


Code:
#    v1.00c(GMT 0000 25-2-2016):                                               |
#    1. Fixed nil actor in unison_item_usable? due to missing code bug         |
#    2. Fixed not restroing the unison usable lock for the currently selected  |
#       unison skill/item right before processing the prior command            |
#    3. Fixed not clearing the unison usable lock for the currently selected   |
#       unison skill/item right after processing the next command              |
#    4. Fixed not clearing unison inputable/usable locks upon clearing unison  |
#       action slot                                                            |
#    v1.00b(GMT 1100 26-7-2015):                                               |
#    1. Fixed reserving nonempty action slots and selecting reserved ones bug  |
#    v1.00a(GMT 1200 22-7-2015):                                               |
#    1. 1st version of this script finished                                    |



View attachment (DoubleX)YEA-BattleEngine Unison v1.00c.rar

Downloads / Referenced Files

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License / Terms Note

Terms Of Use You shall: 1. Follow the terms of use of Yanfly Engine Ace - Ace Battle Engine 2. Keep this script's Script Info part's contents intact

Creator Claims / Removal

If you are the original creator and want this listing reassigned, edited, or removed, join BMMPlay and contact the moderators with proof that matches the original RPG Maker Web profile, linked GitHub, itch.io page, or another public creator identity.

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