Lines with hardcoded effects, although there may be ruleset.2da entries you cannot change what lines these are applied to. If you want to replicate these features you have to reuse the line. NWN:EE has removed some of these limitations so they are not listed here but will be in the 2da documentation further down.

NOTE: Scripts that run (eg; Turn Undead or Lay on Hands) for feats are not considered hardcoded!

Classes with Alignment Restrictions

The alignment restrictions should be un-hardcoded now but certain classes recommended option (ie the "default") seem hardcoded (and has a default for non-standard class lines). Still needs investigating fully.

Animation Cheer Hardcoding

As noted below 6 class lines (Cleric, Druid, Paladin, Sorcerer, Wizard and Rogue) have their "cheer" animation emote set to "Victory, Thief" (Rogue) or "Victory, Mage" (the casters) while everyone else gets the default "Victory, Fighter". Weird. Also Bard isn't a Wizard apparently!

Note that the animations can be played separately with PlayAnimation, as Victory 1, 2 and 3 (Fighter, Mage and Thief versions respectively).

Class Hardcoding

0 - Barbarian

Barbarians (very likely - need to confirm) get Movement Speed Bonuses applied, which is tied to the class line not feat - the feat just is a nice UI bonus for players. Not sure how this affects NPCs.

307BARBARIAN_ENDURANCE_BONUS0.1f

FEAT_BARBARIAN_ENDURANCE provides this amount of % EffectMovementSpeedIncrease. So 0.1f is 10% bonus. It is probably specially hardcoded to CLASS_TYPE_BARBARIAN as well.

Uncanny dodge II grants immunity to sneak attacks from a flanking attacker unless the attacker has at least four more combined class levels of rogue, assassin, and barbarian than the defender. (Shadowdancer and blackguard levels are not counted.) For example, a level 10 rogue would have this immunity when attacked by a level 13 rogue, but not when attacked by a level 14 rogue. This immunity does not apply when the defender is flat-footed.

Appears Barbarian Rage may have some hardcoded items; see https://nwn.fandom.com/wiki/Barbarian_rage

1 - Bard

In NWN:EE it has unhardcoded spellcasting tied to an Arcane spellbook and Charisma.

Bard Song is scripted.

Bardic Knowledge feat is tied to Bard and Harper class levels combined.

2 - Cleric

The "Cheer" emote animation is hardcoded to "Victory, Mage".

In NWN:EE it has unhardcoded Domains choice and spellcasting ability tied to Divine spellbook and Wisdom.

Turn Undead is scripted.

3 - Druid

The "Cheer" emote animation is hardcoded to "Victory, Mage".

In NWN:EE it has unhardcoded Animal Companions (the option to combine class levels for the Animal Companion level is a ruleset.2da entry) and spellcasting ability tied to Divine spellbook and Wisdom.

4 - Fighter

There are no known limitation in general reusing this line.

However this is used as the default classes.2da line when "Recommend" is pressed in character generation. If the line is blanked or unavailable (through some prerequisite being needed) it will crash the client.

If you do not disable the Recommend button in ruleset.2da then make sure this line is filled in and available to players.

5 - Monk

Monks get a wide array of "Monk Bonuses". These equally apply to the missing "Shou Disciple" line below. These include a different Base Attack Bonus progression, Unarmed Strike damage and ability to use "Monk abilities" in armour (just giving the feat doesn't seem to work in many cases).

The "Monk Glowing Eyes" appears to be hardcoded (although the vfx it uses could be blanked out).

Monk feats - like Ki Strike, Quivering Palm etc. may be tied to having a particular class level, or that the DC includes monk class levels, or sometimes they just fail altogether. Need to document all of these limitations (so you don't go adding Ki Strike to a monster NPC and expect it to work properly).

111KI_STRIKE_LEVEL_55FEAT_EPIC_IMPROVED_KI_STRIKE_5 if possessed provides this amount of damage penetration, as if equivalent to a +X weapon.
112KI_STRIKE_LEVEL_44FEAT_EPIC_IMPROVED_KI_STRIKE_4 if possessed provides this amount of damage penetration, as if equivalent to a +X weapon.
113KI_STRIKE_LEVEL_33FEAT_KI_STRIKE if possessed and CLASS_TYPE_MONK level is level 16 it provides this amount of damage penetration, as if equivalent to a +X weapon.
114KI_STRIKE_LEVEL_22FEAT_KI_STRIKE if possessed and CLASS_TYPE_MONK level is level 13 it provides this amount of damage penetration, as if equivalent to a +X weapon.
115KI_STRIKE_LEVEL_11FEAT_KI_STRIKE if possessed and CLASS_TYPE_MONK level is level 10 it provides this amount of damage penetration, as if equivalent to a +X weapon.
138DIAMOND_SOUL_SPELL_RESISTANCE_BASE10FEAT_DIAMOND_SOUL provides this base + Monk Class Levels in spell resistance. See NWN Wiki for details.
161QUIVERING_PALM_BASE_DC10FEAT_QUIVERING_PALM base DC. Default DC is 10 + half the monk's character level + the monk's wisdom modifier.
322FLURRY_OF_BLOWS_TO_HIT_MODIFIER-2FEAT_FLURRY_OF_BLOWS modifier to hit. It adds +1 attack per round with monk weapons/fits, at a default of -2 to hit.
367MONK_DAMAGE_TIER_ONE_THRESHHOLD4Monks get bonus damage using their fists controlled by these values. Presumably tier 1 threshold means CLASS_TYPE_MONK at level 4 gets MONK_DAMAGE_TIER_ONE_SDAMAGE_DIE (6) if small or MONK_DAMAGE_TIER_ONE_DAMAGE_DIE (8) multiplied by SDAMAGE_DICE (1) if small or MONK_DAMAGE_TIER_DICE (1) otherwise. This gives a final amount of 1d6 for small or below and 1d8 for medium or above.
368MONK_DAMAGE_TIER_TWO_THRESHHOLD8Monks get bonus damage using their fists controlled by these values. See above for example.
369MONK_DAMAGE_TIER_THREE_THRESHHOLD12Monks get bonus damage using their fists controlled by these values. See above for example.
370MONK_DAMAGE_TIER_FOUR_THRESHHOLD16Monks get bonus damage using their fists controlled by these values. See above for example.
371MONK_DAMAGE_TIER_ZERO_SDAMAGE_DIE4Monks get bonus damage using their fists controlled by these values. See above for example - this is tier 0 or by default < level 4.
372MONK_DAMAGE_TIER_ONE_SDAMAGE_DIE6Monks get bonus damage using their fists controlled by these values. See above for example.
373MONK_DAMAGE_TIER_TWO_SDAMAGE_DIE8Monks get bonus damage using their fists controlled by these values. See above for example.
374MONK_DAMAGE_TIER_THREE_SDAMAGE_DIE10Monks get bonus damage using their fists controlled by these values. See above for example.
375MONK_DAMAGE_TIER_FOUR_SDAMAGE_DIE6Monks get bonus damage using their fists controlled by these values. See above for example.
376MONK_DAMAGE_TIER_ZERO_SDAMAGE_DICE1Monks get bonus damage using their fists controlled by these values. See above for example - this is tier 0 or by default < level 4.
377MONK_DAMAGE_TIER_ONE_SDAMAGE_DICE1Monks get bonus damage using their fists controlled by these values. See above for example.
378MONK_DAMAGE_TIER_TWO_SDAMAGE_DICE1Monks get bonus damage using their fists controlled by these values. See above for example.
379MONK_DAMAGE_TIER_THREE_SDAMAGE_DICE1Monks get bonus damage using their fists controlled by these values. See above for example.
380MONK_DAMAGE_TIER_FOUR_SDAMAGE_DICE2Monks get bonus damage using their fists controlled by these values. See above for example.
381MONK_DAMAGE_TIER_ZERO_DAMAGE_DIE6Monks get bonus damage using their fists controlled by these values. See above for example - this is tier 0 or by default < level 4.
382MONK_DAMAGE_TIER_ONE_DAMAGE_DIE8Monks get bonus damage using their fists controlled by these values. See above for example.
383MONK_DAMAGE_TIER_TWO_DAMAGE_DIE10Monks get bonus damage using their fists controlled by these values. See above for example.
384MONK_DAMAGE_TIER_THREE_DAMAGE_DIE12Monks get bonus damage using their fists controlled by these values. See above for example.
385MONK_DAMAGE_TIER_FOUR_DAMAGE_DIE20Monks get bonus damage using their fists controlled by these values. See above for example.
386MONK_DAMAGE_TIER_DICE1Monks get bonus damage using their fists controlled by these values. See above for example. This applies to all "normal" sized creatures. Default normal: 1d6 - 1d20 instead of small 1d4 - 2d6.

6 - Paladin

The "Cheer" emote animation is hardcoded to "Victory, Mage".

In NWN:EE it has unhardcoded Divine spellbook based on Wisdom.

Champion of Torm and paladin levels are added together to determine the bonus damage to Smite Evil.

Other abilities such as Lay on Hands and Turn Undead are scripted.

7 - Ranger

In NWN:EE it has unhardcoded Animal Companions (the option to combine class levels for the Animal Companion level is a ruleset.2da entry) and spellcasting ability tied to Divine spellbook and Wisdom.

Note according to nwn.fandom.com the class choosing a Favoured Enemy determines the class level associated with it.

Also Dual-Wield feat is tied to the ranger class not the feat itself, which is there just for information purposes apparently - it fakes adding Two Weapon Fighting and Ambidexterity only if the armor they are wearing is less than 4.

8 - Rogue

The "Cheer" emote animation is hardcoded to "Victory, Rogue".

Having a single rogue class level unlocks these two "high DC" for disarming and detecting traps.

Note that Flagging, Examining and even Recovering are still possible actions if the trap is found from some means (commonly Find Traps being altered to not disable traps, only detect them).

40MAX_NON_ROGUE_DISARM_LEVEL35The maximum DC of a trap that can be disabled by a non-Rogue class using SKILL_DISARM_TRAP.
41MAX_NON_ROGUE_DETECT_LEVEL35The maximum DC of a trap that can be detected by a non-Rogue class using SKILL_SEARCH.

Uncanny dodge II grants immunity to sneak attacks from a flanking attacker unless the attacker has at least four more combined class levels of rogue, assassin, and barbarian than the defender. (Shadowdancer and blackguard levels are not counted.) For example, a level 10 rogue would have this immunity when attacked by a level 13 rogue, but not when attacked by a level 14 rogue. This immunity does not apply when the defender is flat-footed.

9 - Sorcerer

The "Cheer" emote animation is hardcoded to "Victory, Mage".

In NWN:EE it has unhardcoded Familiar availability (and they stack with other Familiar compatible classes) and spellcasting ability tied to Arcane spellbook and Charisma.

10 - Wizard

The "Cheer" emote animation is hardcoded to "Victory, Mage".

In NWN:EE it has unhardcoded Familiar availability (and they stack with other Familiar compatible classes) and spellcasting ability tied to Arcane spellbook and Intelligence.

11 - 26 - NPC Classes

Aberration, Animal, Construct, Humanoid, Monstrous, Elemental, Fey, Dragon, Undead, Commoner, Beast, Giant, MagicBeast, Outsider, Shapechanger, Vermin have no special qualities at all.

27 - Shadowdancer

No known hardcoded things, go mad adding Hide in Plain Sight feat to things.

28 - Harper

Worth noting: NWN:EE now allows this class to have a proper spellbook.

Bardic Knowledge feat is tied to Bard and Harper class levels combined.

29 - Arcane Archer

No known hardcoded things.

30 - Assassin

Uncanny dodge II grants immunity to sneak attacks from a flanking attacker unless the attacker has at least four more combined class levels of rogue, assassin, and barbarian than the defender. (Shadowdancer and blackguard levels are not counted.) For example, a level 10 rogue would have this immunity when attacked by a level 13 rogue, but not when attacked by a level 14 rogue. This immunity does not apply when the defender is flat-footed.

Assassins Death Attack is tied to Assassin levels.

31 - Blackguard

Class levels of Blackguard are tied to the Feat: Smite Evil.

32 - Champion of Torm

Champion of Torm and paladin levels are added together to determine the bonus damage to Smite Evil.

Sacred Defence seems to be tied to Champion of Torm levels since there is no ruleset.2da entry.

33 - Weapon Master

Epic Superior Weapon Focus bonus is tied to Weapon Master Levels. The AB bonus is (WM levels - 10) / 3, which can be 0 or negative if the creature has low or no WM levels.

Ki Damage uses/day are tied to Weapon Master.

34 - Pale Master

The start changes should be unhardcoded in NWN:EE. See cls_stat_palema.2da

Deathless Vigor is tied to Pale Master levels, and has some ruleset.2da alterations for the values:

342FEAT_DEATHLESS_VIGOR_HP_BONUS3FEAT_DEATHLESS_VIGOR amount of HP to add at levels 5, 6, 7, 8, 9 and 10 when taking CLASS_PALE_MASTER.
343FEAT_EPIC_DEATHLESS_VIGOR_HP_BONUS5FEAT_EPIC_DEATHLESS_VIGOR amount of HP to add at levels 15, 20, 25 and 30 when taking CLASS_PALE_MASTER.

Undead Graft may also be tied to this class line - the uses/day part that is.

35 - Shifter

No known specific hardcoded things. All abilities are scripted or not tied to the class lines.

36 - Dwarven Defender

The Defensive Stance uses and the level tied to the feat is this class line. Some of the amounts can be altered using

132DWARVEN_DEFENDER_DAMAGE_REDUCTION3FEAT_DAMAGE_REDUCTION_6 appears to be the CLASS_TYPE_DWARVEN_DEFENDER feat this applies to. It increases by 3 as levels increase, see NWN wiki
345FEAT_DEFENSIVES_STANCE_STR_BONUS2FEAT_DWARVEN_DEFENDER_DEFENSIVE_STANCE bonus to strength when used.
346FEAT_DEFENSIVES_STANCE_CON_BONUS4FEAT_DWARVEN_DEFENDER_DEFENSIVE_STANCE bonus to constitution when used.
347FEAT_DEFENSIVES_STANCE_SAVE_BONUS2FEAT_DWARVEN_DEFENDER_DEFENSIVE_STANCE bonus to saving throws when used.
348FEAT_DEFENSIVES_STANCE_DODGE_BONUS4FEAT_DWARVEN_DEFENDER_DEFENSIVE_STANCE bonus to dodge AC when used.

37 - Dragon Disciple

The stat increases of this class should be now be unhardcoded to more or less degrees; see cls_stat_dradis.2da

The Hit Die increase feature of this class still appears to be hard coded - the feats for hit die increase are used but only if the class is ID 37. This is an important limit to understand if you want to implement color variants like Black/Blue/White Dragon Disciple.

Wings are added automatically at level 9 of this class.

Note that interestingly FEAT_IMMUNITY_TO_FIRE is not tied to the class. Also amusingly it sets the immunity to 100% and cannot be reduced which is weird.

38 - Ooze

Nothing hardcoded: NPC class not used specially (note the racial type doesn't even have a favoured enemy type!).

39 - Eye of Gruumsh

Book Information: https://www.realmshelps.net/charbuild/classes/prestige/general/eyeofgruumsh.shtml

Not included in the base game - unknown why. Basically a Barbarian prestige class for Half-Orcs only, so very narrow focus (possibly better if it was made more generic? although there are some specific bonuses for other Half-Orcs too!). Some slight Rage bonuses, and Blindsight 5 and 10 feet distances, and some other bits and bobs.

The game engine has hardcoded +1 AC per 3 levels of Eye of Gruumsh, added as natural AC. While this is technically replaced by cls_stats_ files, this will apply regardless to this class line.

See feat.2da for info on the removed feats (which have TLK references and some in-game functionality leftover).

Class Eye of Gruumsh information for reference:

Blinding Spittle
Type of Feat: Class
Prerequisite: Eye of Gruumsh level 4.
Specifics: At 4th level, an Eye of Gruumsh can launch blinding spittle at any opponent within 20 feet. Using a ranged touch attack (at a -4 penalty), he spits his stomach acid into the target's eyes. An opponent who fails a Reflex save (DC 10 + eye of Gruumsh level + eye of Gruumsh's Constitution bonus) is blinded until he or she can rinse away the spittle. This attack has no effect on creatures that don't have eyes or don't depend on vision.  Blinding spittle is usable 2/day at 4th level and 4/day at 7th level.
Use: Combat Mode.
(PRESTIGE CLASS)
Worshipers of the Orc deity Gruumsh that have put out their own right eye in a bloody and painful ritual. These living martyrs to Gruumsh are some of the toughest orcs and half-orcs in the world.
The eye of Gruumsh is a true prestige class in the sense that all orcs respect those who achieve it.
Barbarians gain the most value from this prestige class, since it encourages raging as a fighting style

- Hit Die: d12
- Proficiencies: Simple and Martial Weapons, Light, and Medium Armor Proficiency, Shields
- Skill Points: 2 + Int Modifier.

REQUIREMENTS:

Alignment: Chaotic evil, choatic neutral, or neutral evil.
Race: Half-Orc or Orc
Feats: Exotic Weapon Proficiency (Double Axe), Weapon Focus (Double Axe).
Base Attack Bonus: +6

ABILITIES:

Level
1: Blind-Fight.
 Command the Horde
 Rage 1/day.
2. Swing Blindly - The character's rage's become more powerful granting a +4 strength bonus, while also suffering a -4 armor bonus while raging.
3: Ritual Scarring - Through frequent disfiguration of his own skin, the eye of Gruumsh gains a +1 natural armor bonus.
4: Blinding Spittle - The character can spit their stomach acid into a target's eyes 2/day.
 Rage 2/day.
5: Blindsight - The character gains blindsight in a 5 foot radius.
6: Ritual Scarring - The eye of Gruumsh's natural armor bonus increases to +2.
7: Blinding Spittle 4/day.
8: Blindsight 10 foot radius.
 Rage 3/day.
9: Ritual Scarring - The eye of Gruumsh's natural armor bonus increases to +3.
10: Sight of Gruumsh - The character gains a +2 morale bonus on all saving throws.

40 - Shou Disciple

Book Information: https://www.realmshelps.net/charbuild/classes/prestige/realms/shoudisciple.shtml

Basically a Monk Prestige Class that can use light weapons instead of fists. Has a variety of ruleset.2da entries for the other bonuses it has tied to feats that are dummied out. See the Monk line for further information on hardcoded aspects of this class.

The class has a ton of interactions in the engine regarding the unarmed damage it does, the use of weapons, Shou levels count as Monk levels as well so it's pretty feature complete.

See feat.2da for info on the removed feats (which have TLK references and some in-game functionality leftover).

Class Shou Disciple for reference:

Shou disciples are martial artists who have studied or observed the monks of Kara-Tur and seek to emulate their style. Focusing more on the martial aspects of a monk's training, they sacrifice the enlightenment and supernatural abilities of the true ascetic. Shou disciples fight with martial weapons and often wear armor, instantly marking them as different from monks.

- Hit Die: d10
- Proficiencies: Martial and Monk Weapons, Light Armor Proficiency.
- Skill Points: 2 + Int Modifier.

REQUIREMENTS:

Feats: Dodge, Improved Unarmed Strike, Weapon Focus (Unarmed Strike)
Base Attack Bonus: +3
Skills: Tumble 4 ranks
Base Reflex Save: +2

ABILITIES:

Level
1: Shou Disciple Dodge Bonus +1 (replaces the normal +1 dodge feat bonus).
 Unarmed Strike - The character deals 1d6 of unarmed damage. A Shou disciple with levels in the monk class will use the better of the two damage ranges, or the unarmed damage calculated by combining his Shou disciple and monk levels and using the unarmed damage of a monk of the resulting level if it produces a better result.
 Wearing light armor does not interfere with any of the Shou disciple's class abilities, but shields and medium or heavy armor do.
2: Unarmed Strike - The character deals 1d8 of unarmed damage.
 Shou Disciple Dodge Bonus +2
 Bonus Feat - Chosen from the following list if the prerequisites are met: Deflect Arrows, Expertise, Improved Initiative, Improved Knockdown, Mobility, Power Attack, Spring Attack, Weapon Finesse and Weapon Specialization.
3: Unarmed Strike - The character deals 1d10 of unarmed damage.
 Martial Flurry (light) - The character gains the ability to use any light melee weapon for his flurry of blows.
4: Shou Disciple Dodge Bonus +3
 Bonus Feat - Chosen from the following list if the prerequisites are met: Deflect Arrows, Expertise, Improved Initiative, Improved Knockdown, Mobility, Power Attack, Spring Attack, Weapon Finesse and Weapon Specialization.
5: Unarmed Strike - The character deals 2d6 of unarmed damage.
 Martial Flurry (any) - The character gains the ability to use any melee weapon for his flurry of blows.

Ruleset.2da references:

117SHOU_DISCIPLE_DODGE_AC_BONUS_22Not in the default game but if a feat is added for class CLASS_TYPE_SHOU_DISCIPLE it presumably is 2 dodge AC bonus with the relevant feat.
118SHOU_DISCIPLE_DODGE_AC_BONUS_33Not in the default game but if a feat is added for class CLASS_TYPE_SHOU_DISCIPLE it presumably is 3 dodge AC bonus with the relevant feat.
390SHOU_DISCIPLE_DAMAGE_TIER_ONE_DICE1Not implemented but if SHOU_DISCIPLE is added it does something.
391SHOU_DISCIPLE_DAMAGE_TIER_TWO_DICE2Not implemented but if SHOU_DISCIPLE is added it does something.
392SHOU_DISCIPLE_DAMAGE_TIER_ONE_THRESHHOLD2Not implemented but if SHOU_DISCIPLE is added it does something.
393SHOU_DISCIPLE_DAMAGE_TIER_TWO_THRESHHOLD3Not implemented but if SHOU_DISCIPLE is added it does something.
394SHOU_DISCIPLE_DAMAGE_TIER_THREE_THRESHHOLD5Not implemented but if SHOU_DISCIPLE is added it does something.
395SHOU_DISCIPLE_DAMAGE_TIER_ZERO_DAMAGE_DIE6Not implemented but if SHOU_DISCIPLE is added it does something.
396SHOU_DISCIPLE_DAMAGE_TIER_ONE_DAMAGE_DIE8Not implemented but if SHOU_DISCIPLE is added it does something.
397SHOU_DISCIPLE_DAMAGE_TIER_TWO_DAMAGE_DIE10Not implemented but if SHOU_DISCIPLE is added it does something.
398SHOU_DISCIPLE_DAMAGE_TIER_THREE_DAMAGE_DIE6Not implemented but if SHOU_DISCIPLE is added it does something.
399SHOU_DISCIPLE_DAMAGE_TIER_ZERO_SDAMAGE_DIE4Not implemented but if SHOU_DISCIPLE is added it does something.
400SHOU_DISCIPLE_DAMAGE_TIER_ONE_SDAMAGE_DIE6Not implemented but if SHOU_DISCIPLE is added it does something.
401SHOU_DISCIPLE_DAMAGE_TIER_TWO_SDAMAGE_DIE8Not implemented but if SHOU_DISCIPLE is added it does something.
402SHOU_DISCIPLE_DAMAGE_TIER_THREE_SDAMAGE_DIE10Not implemented but if SHOU_DISCIPLE is added it does something.

41 - Purple Dragon Knight

No hardcoded lines this is essentially a custom content class added in a Bioware patch, coded by the PrC by Stratovarius, and first used in the Wyvern Crown of Corymr Premium Module.