Calculate nonability monster stat

[Dark_Ansem]

let's say I have an undead monster with these stats

Size/Type:    Medium Undead (Extraplanar)
Hit Dice:    9d12 (58 hp)
Initiative:    +6
Speed:    20 ft. (4 squares)
Armor Class:    20 (+2 Dex, +8 natural), touch 12, flat-footed 18
Base Attack/Grapple:    +4/+5
Attack:    Slam +6 melee (1d8+1)
Full Attack:    Slam +6 melee (1d8+1)
Space/Reach:    5 ft./5 ft.
Special Attacks:    Death gaze
Special Qualities:    Damage reduction 10/cold iron, darkvision 60 ft., immunity to electricity, resistance to acid 10 and fire 10, undead traits, vulnerability to sunlight
Saves:    Fort +3, Ref +5, Will +7
Abilities:    Str 13, Dex 15, Con Ø, Int 6, Wis 12, Cha 12
Skills:    Listen +11, Move Silently +10, Spot +11
Feats:    Alertness, Dodge, Improved Initiative, Weapon Focus (slam)
Environment:    A chaotic evil-aligned plane
Organization:    Solitary or gang (2-4)
Challenge Rating:    8
Treasure:    None
Alignment:    Always chaotic evil
Advancement:    10-13 HD (Medium); 14-27 HD (Large)
Level Adjustment:    —

how would you calculate the missing Ability score? since in Aurora-engine games nonabilities have to be emulated?

[xwarren]

let's say I have an undead monster with these stats

Size/Type:    Medium Undead (Extraplanar)
Hit Dice:    9d12 (58 hp)
Initiative:    +6
Speed:    20 ft. (4 squares)
Armor Class:    20 (+2 Dex, +8 natural), touch 12, flat-footed 18
Base Attack/Grapple:    +4/+5
Attack:    Slam +6 melee (1d8+1)
Full Attack:    Slam +6 melee (1d8+1)
Space/Reach:    5 ft./5 ft.
Special Attacks:    Death gaze
Special Qualities:    Damage reduction 10/cold iron, darkvision 60 ft., immunity to electricity, resistance to acid 10 and fire 10, undead traits, vulnerability to sunlight
Saves:    Fort +3, Ref +5, Will +7
Abilities:    Str 13, Dex 15, Con Ø, Int 6, Wis 12, Cha 12
Skills:    Listen +11, Move Silently +10, Spot +11
Feats:    Alertness, Dodge, Improved Initiative, Weapon Focus (slam)
Environment:    A chaotic evil-aligned plane
Organization:    Solitary or gang (2-4)
Challenge Rating:    8
Treasure:    None
Alignment:    Always chaotic evil
Advancement:    10-13 HD (Medium); 14-27 HD (Large)
Level Adjustment:    —

how would you calculate the missing Ability score? since in Aurora-engine games nonabilities have to be emulated?

I've checked bodaks blueprint in toolset - it has Constitution = 10. I would leave it that way.

[Dark_Ansem]

a nonability is 10 then? due to the +0 thing. thanks
after all, saves can be adjusted manually, that is true. I wondered if there was a more precise way tho.

how can I make an incorporeal creature, then, like a Dread Wraith?

[xwarren]

a nonability is 10 then? due to the +0 thing. thanks
after all, saves can be adjusted manually, that is true. I wondered if there was a more precise way tho.

how can I make an incorporeal creature, then, like a Dread Wraith?

NPC? I suggest using bioware blueprints as templates.

[Dark_Ansem]

what about incorporeal PCs, like with a template?

[xwarren]

what about incorporeal PCs, like with a template?

From SRD:

Nonabilities

Some creatures lack certain ability scores. These creatures do not have an ability score of 0—they lack the ability altogether. The modifier for a nonability is +0. Other effects of nonabilities are detailed in the ability's description.

In NWN character gets +0 modifier with ability score = 10.

Any creature that can physically manipulate other objects has at least 1 point of Strength. A creature with no Strength score can’t exert force, usually because it has no physical body or because it doesn’t move. The creature automatically fails Strength checks. If the creature can attack, it applies its Dexterity modifier to its base attack bonus instead of a Strength modifier.

You would have to modify all scripts that make Strength check and add auto-fail for incorporeal creatures. You could also add 'No Combat Damage' to any weapon equipped (although incorporeal creatures should have no items in inventory, but that will not work in NWN) and use Dexterity modifier for every other attack that creature has.

[Dark_Ansem]

thanks xwarren, that is true for strength. I hoped there was a workaraound like the one you use for constitution...
what about making a property (like those added to weapons) that acts as a script workaround, to attach to creature hide?

[DM Heatstroke]

a nonability is 10 then? due to the +0 thing. thanks
after all, saves can be adjusted manually, that is true. I wondered if there was a more precise way tho.

how can I make an incorporeal creature, then, like a Dread Wraith?

I've made the Dread Wraith for Athas Reborn.  Give it Self Concealment V & use the X2_L_IS_INCORPOREAL integer variable so it can pass thru other creatures.  For more realism give it DR +1/100 since they are completely immune to non-magical weapons.  The strength drain is completely scriptable using the tag-based unique power OnHit method.

Also, make sure you modify their Concentration by their CHA modifier, since that's what undead use for that skill.

I can send you mine if you want to examine it, but you'll need a CEP2 module to import it into since it uses the CEP2 creature scaling (since they are ogre-sized).

[DM Heatstroke]

a nonability is 10 then? due to the +0 thing. thanks
after all, saves can be adjusted manually, that is true. I wondered if there was a more precise way tho.

how can I make an incorporeal creature, then, like a Dread Wraith?

NPC? I suggest using bioware blueprints as templates.

I wouldn't.  They are nowhere near as lethal as they should be in PnP.

[Dark_Ansem]

thanks DM

on a bit of a sidenote, how do you emulate the various types of DR (epic, cold iron etc) with the +X value?

[DM Heatstroke]

thanks DM

on a bit of a sidenote, how do you emulate the various types of DR (epic, cold iron etc) with the +X value?

Epic = +5 or better.  The rest of them aren't so easy.  If you were a really good scripter I suppose you could work it into the PRC's combat system using the (CEPs?) material.2da

[Dark_Ansem]

but I'm not to improve that +5 bonus I can simply edit the 2da file or I need to script that as well?

[DM Heatstroke]

but I'm not to improve that +5 bonus I can simply edit the 2da file or I need to script that as well?

Not sure what you are asking here.

[Dark_Ansem]

to allow the toolset more choice in the "item properties" tab (adding other numerical values to the standard ones), one has only to edit the .2da that corresponds to those values or there is a script to be changed as well?

[xwarren]

to allow the toolset more choice in the "item properties" tab (adding other numerical values to the standard ones), one has only to edit the .2da that corresponds to those values or there is a script to be changed as well?

Depends which item property you want to change. In most cases (probably all bioware ips, but I'm not sure) it's just 2da edit.