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[Tool] QDMULTI: A Library for Multiclass Kits

AquadrizztAquadrizzt Member Posts: 1,018
edited November 2017 in General Modding
QDMULTI is a library for mods that install multiclass kits in the Enhanced Infinity Engine (v2.0+).

The newest version of this library is available on GitHub.


Beamdog released the Enhanced Infinity Engine (v2.0) with the release of their original game, Siege of Dragonspear. Among numerous other functionality changes, this patch enabled the character creation menus to display multiclass kits. Unfortunately, any kit that would appear in the multiclass menus would not gain any of its unique class bonuses, due to the way that the engine handled multiclass kits.

This library fixes that problem, and enables multiclass kits to both appear properly in character creation and apply the appropriate bonuses during character advancement.


If you would like to tie your mod's multiclass kits into the qdmulti framework, then you first need to download the latest version of qdmulti and include it somewhere in your mod's installation files. After adding this file to your mod structure, you can enable the functionality in your mod's compenents by adding the following code to your mod's installation files (either .tp2 or .tpa).

This line should be included before you use the ADD_KIT function (if you are adding a new kit).
INCLUDE ~your/folders/here/qd_multiclass.tpa~ 
This line should be included after you use the ADD_KIT function (if you are adding a new kit).
LAF qd_multiclass
kit_name = ~kitname~ //the internal name for your kit (e.g. QDMAGUS)
kit_clab = ~kitclab~ //the internal name of your kit's clab file, without the .2da extension
base_class = ~X~ // this can take 6 values: [F]ighter, [P]riest, [D]ruid, [R]anger, [M]age, [T]hief
Of the parameters utilized, the only one that I feel needs further explanation is the "base_class" parameter. This parameter handles which class the kit abilities will be tied to; if you say that a multiclass kit's base class is fighter ("base_class = F"), then it will gain the assigned kit bonuses from increases in its fighter level.


Note that this library is only designed to handle class benefits that are granted through the class' clab file; it will not handle specialist mages' school restrictions, specific kit's item restrictions, or other effects tied to the kit's usability flags.

Furthermore, due to the length restrictions on internal names, the library can only include abilities that have internal names of 7 characters or less. Abilities with internal names of 8 characters (or more) will not be converted during the qd_multiclass function.


This library is very versatile, and can be used in a variety of scenarios. Some of the things it can do include:
- giving a kit to a multiclass character at character creation (e.g. Swashbuckler/Mage).
- allowing a multiclass character to have one kit for each of their classes (e.g. a Berserker/Priest of Talos).
- allowing modders to implement their own multiclass kits that have abilities tied to each of the base classes (e.g. the Bladesinger Fighter/Mage kit).
- allowing a single- or multiclass character to gain the benefits of multiple kits of the same class.

QDMULTI in Action

Mods that make use of QDMULTI include:
- Eldritch Magic by @Abdel_Adrian
- Might and Guile by @subtledoctor

Permissions and Support

I am publishing QDMULTI so that other modders may make multi-class kits more reliably and efficiently. I do not require nor expect modders to contact me requesting permission to use this library. If you encounter errors while using this library, please contact me so that I may provide fixes and updates.

Post edited by Aquadrizzt on


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