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Adding Perks


Xylozi

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I've been looking into the game files and it seems that it is possible to add perks fairly easily, and to add new effects for the perks.

 

All the perk effects are controlled in buff.xml. Each perk has a buff that is linked to said perk via perk_buff.xml.

 

1. To start you want to create a new perk in perk.xml. To do this add a new row.

<row icon_id="mule" level="1" metaperk_id="" parent_id="" perk_id="83a8b86b-9ff1-4e2f-a4ba-fc6530dce122" perk_name="test_mod_perk" perk_ui_desc="test_mod_perk_desc" perk_ui_name="test_mod_perk_name" skill_selector="" stat_selector="2" ui_priority="0" visibility="2" />

perk_id must be unique.

level controls when the perk can be taken.

skill_selector controls which skill the perk belongs to.

stat_selector controls which stat the perk belongs to.

 

stat_selector values:

stat_selector ids:
"" - None
0 - Strength
1 - Agility
2 - Vitality
3 - Speech

skill_selector values:

"" - None
0 - Stealth
1 - Horsemanship
2 - Fencing
3 - Bard
4 - Lockpicking
5 - Pickpocketing
6 - Alchemy
7 - Cooking
8 - Repairing
9 - Smithing
10 - Fishing
11 - Mining
12 - First Aid
13 - Drinking
14 - Hunting
15 - Defence
16 - Sword
17 - Axe
18 - Bow
19 - Crossbow
20 - Shield
21 - Mace
22 - Dagger
23 - Polearm
24 - Unarmed
25 - Herbalism
26 - Reading
27 - Tailoring
28 - Armourer
29 - Weaponsmithing
30 - Shoemaking

2. You then need to create your new buff in buff.xml. To do this add a new row.

<row buff_ai_tag_id="" buff_class_id="4" buff_desc="perk_test_mod_buff_desc" buff_exclusivity_id="1" buff_id="ffabf5f5-0ce4-4c25-aeb6-7c10466221dd" buff_lifetime_id="1" buff_name="perk_test_mod_buff" buff_ui_name="perk_test_mod_buff_name" buff_ui_order="" buff_ui_type_id="4" buff_ui_visibility_id="" duration="-1" icon_id="0" implementation="Cpp:Constant" is_persistent="True" params="cap+100" slot_buff_ui_name="" slot_icon_id="" visual_effect="" />

buff_id must be unique.

buff_class_id controls which class of buff the buff belongs to. Found in buff_class.xml

implementation determines when the buff is applied.

params determines what the buff applies as an effect.

 

Implementation points to an internal C++ function that is checked before the params are applied. For example: using Cpp:Bleeding in the implementation field will restrict the buff to only when Henry is bleeding.

 

Params applies modifiers to various pre-defined values. For example, if you wanted the perk to grant +2 Vitality, you'd add vit+2 in the params field. Multiple effects can be added by adding a comma between them.

 

You can use +, -, *, / and = in the params field. For example, wat*1.2 increases Weapon Damage by 20%

 

Implementation values:

Script:<script>.lua (in params: {{<var>=<value>}})  # May not work

Cpp:Constant                      # Applies buff constantly.
Cpp:BasicTimed                    # Used for timed buffs (duration contols time)
Cpp:AdditionalAttackerCountFading # Applied when out numbered
Cpp:AgilityWeaponBuff             # Applied if agility weapon is wielded
Cpp:Alerted                       # AI use
Cpp:Bleeding                      # Applies if Henry is Bleeding
Cpp:BloodRush                     # Applied upon killing first enemy in a combat situation
Cpp:Caffeine
Cpp:CarryingBody                  # Applied if carrying body
Cpp:ChainStrike                   # Applied if multiple hits are chained
Cpp:CombatContextBuff             # Applied when in combat
Cpp:CountrysideLocation           # Applied in countryside
Cpp:Curious
Cpp:DeathProtection               # Applies Death Protection
Cpp:DialogSkillCheck              # Applies effect in dialog
Cpp:DocumentItemBuff              # Limits modifier to books
Cpp:Drunk                         # Applies when drunk
Cpp:DrunkChecking                 # Applies if Henry is drunk, and not drunk (<a>,<b>)
Cpp:Educated                        
Cpp:EquippableItemWeighted        # Used for scaling buffs added to item, based on quality of item
Cpp:Exhausted                     # Applied if exhausted
Cpp:Encumbered                    # Applied if encumbered
Cpp:FoodHealth                    # Used for buffs added via food
Cpp:FoodPoisoning                 # Applied if sick with food poisoning
Cpp:ForestLocation                # Applied if in Forest
Cpp:Haggle                        # Applies if Henry is haggling
Cpp:Hangover                      # Applied if hungover
Cpp:HealthFadingFromLimit         # Used for Horse, applies effect when horse health is low
Cpp:HealthinessFading             # Applied when on low health
Cpp:HerbItemBuff                  # Limits modifier to herbs
Cpp:Highborn                      # Applies when talking to high social class souls
Cpp:Horseman                        
Cpp:Infamous                      # Applies if Infamous is met
Cpp:Injured                       # Applies if Henry is injured
Cpp:InjuredTag
Cpp:Instant
Cpp:ItemHealthChecking            # Applies if item was repaired by Henry (used on items)
Cpp:JailRecovery                  # Applied during/after jail term
Cpp:KnightInAShiningArmor         # Applies when wearing plate armour in the day
Cpp:LastGasp                      # Applies effect for duration upon taking fatal blow
Cpp:LocalHero                     # Applies Local Hero
Cpp:LowHealth                     # Applies when at low health
Cpp:ManlyOdourStealth             # Applied on stealth use
Cpp:ManlyOdourWoman               # Applied when in dialog with women
Cpp:Monk
Cpp:MoraleContext
Cpp:Night                         # Applied at night, and then day (<a>,<b>)
Cpp:Overeat                       # Applied if overeat occurs
Cpp:Overread                      # Applied if overread occurs
Cpp:Oversleep                     # Applied if oversleep occurs
Cpp:PerkFlowerPower               # Applied if Flower Power is met 
Cpp:PerkHorsenip                  # Applied if Horsenip is met
Cpp:PotionHealth                  # Used for potions
Cpp:ProperDiet                    # Applied if Proper Diet is followed
Cpp:ReadingCartographer
Cpp:ReadingQuality                # Applied when Henry is in a good study location
Cpp:RiddenHorse                   
Cpp:Sadist                        # Applied upon seeing opponent bleed
Cpp:SettlementLocation            # Applied when in town or village
Cpp:SharpeningPressure            # Applied during sharpening process
Cpp:ShieldAndArmorBuff            # Applies effect only to Shield and Armour (edm)
Cpp:ShortTermFood
Cpp:Sick                          # Applied whilst sick from plague
Cpp:Sleep                         # Applied during sleep
Cpp:SleepImproved
Cpp:Starvation                    # Applied whilst starving
Cpp:Still                         # Applies if Henry is stood still
Cpp:StillAndHidden                # Applied when crouched and not moving
Cpp:StomachPain
Cpp:StrengthWeaponBuff            # Applied only with strength weapons
Cpp:TestRealSpeed
Cpp:Thunderstorm( true, false )   # Applies first arg when thundering, second arg when not thundering
Cpp:TipplerPotion                 # Applied when taking Hair o' the Dog
Cpp:Unconscious
Cpp:VersusAnimal                  # Applies when in combat against animals
Cpp:VersusCuman                   # Applies when in combat against cumans
Cpp:VersusDog                     # Applies when in combat against dogs
Cpp:VersusEnemy                   # Applies when in combat against enemies
Cpp:VersusSoldier                 # Applies when in combat against soldiers
Cpp:VersusWoman                   # Applies when in combat against women
Cpp:VersusWomanDialogSkillCheck   # Applies when in dialog against women
Cpp:Void
Cpp:Wanted                        # Applies if Henry is wanted for crimes
Cpp:WeaponHealthIntensity         # Increases chance of effect occuring depending on weapon condition
Cpp:WellWorn                      # Applies 0.33 factor to armour weight inworld (not inventory)
Cpp:WithPlatingArmor              # Applied when wearing Plate armour
Cpp:WithoutPlatingArmor           # Applied when not wearing Plate armour
Cpp:WorldTimeTimed                # Used for timed buffs (duration contols time)

Params values:

# ------ Stats ------
agi : Agility
spc : Speech
str : Strength
vit : Vitality

cha : Charisma
cap : Carrying Capacity
con : Conspicuousness
evi : Visibility
hea : Hearing
noi : Noise
vis : Vision
ble : Bleeding

mst : Total Stamina
dig : Total Hunger
exh : Total Energy
hunger : Current Hunger
exhaust : Current Energy
health : Current Health

rst : Maximum Stamina
sra : Stamina Regeneration
src : Stamina ???
srg : Stamina Regeneration

arr : Armour Effectiveness in Speech
cbi : Charisma Bonus from Equipment
nbi : Noise Reduction for Armour

# ------ Skills ------
fencing : Warfare
horse_riding : Horsemanship
lockpicking : Lockpicking
pickpocketing : Pickpocketing
reading : Reading
stealth : Stealth
weapon_axe : Axe 
weapon_bow : Bow
weapon_crossbow : Crossbow
weapon_dagger : Dagger
weapon_large : Polearm
weapon_mace : Mace
weapon_shield : Shield
weapon_sword : Sword
weapon_unarmed : Unarmed

pds : Lockpick Durability
lpd : Lockpick Difficulty
prc : Lockpick Return Chance
lpn : Lockpick Noise
rdq : Reading Quality
erq : Reading Bonus
hgs : Strength XP on Herb Pickup
lfu : Chance to instantly open lock

# ------ Equipment ------
ade : Total Defence
alo : Armour Load
defense : Defence

# ------ Movement ------
rms : Running Speed
asp : All Movement Speed
fdm : Fall Damage Modifier
Walk : Walk speed
Run : Run speed
Sprint : Sprint Speed
StaminaSprint : Sprint Stamina Cost
LimitRun : Limits Running 
LimitSprint : Limits Sprinting 

fsm : Footstep Sound Modifier

# ------ Combat ------
hlh : Heavy Damage Taken
slh : Light Damage Damage Taken
aco : Charge Stamina Damage
ahm : Mounted Weapon Damage
ain : Bleeding Chance
bad : Enemy Morale Damage
cdw : Clinch Weapon Damage
cli : Clinch Strength
cow : Charge Health Damage
dee : Enemy Equipment Damage
dsl : Dodge Effectiveness
edm : Equipment Damage
eep : Evasion
hko : Head OHK chance
ibi : Bleedout Rate
pac : Poison Chance (from hit)
poi : Poisoned : Boolean
sls : Block Stamina Cost
wac : Weapon Stamina Cost
was : Weapon Aim Swing (bow)
wat : Weapon Damage
wbc : Weapon Poison Application lengh

# ------ Horse ------
cou : Horse Shy Reduction
hcm : Horse Skittishness
hml : Horse May Throw : Boolean
pdp : Horse Throw Resistance
rtm : Horse Shy modiifer 

# ------ Food ------
apa : Alcholism Removal

# ------ Interactions ------
bma : Merchant Buy Price
brm : Bad Reputation Modifier
bso : Stolen Goods Agreeability
grm : Good Reputation Modifier
hac : Haggle Chances : [0,1,+inf]
jrm : Jail Recovery Modiifer : Boolean
pbm : Self-brewed Potion Sell Price
sma : Merchant Sell Price

# ------ Perks ------
fae : First Aid Expert : [1,3]
iex : Item Expert : [0,3]
mkp : Reveal Map : Boolean
pos : Pocket Sight : [0,8]
rml : Extra Money Loot 
skp : Stealth Kills : Boolean

# ------ Soul ------
apr : Attack Protection : Boolean
btw : Animal Perception (against player)
ppr : Steal Proection : Boolean
cag : Combat Aggression : Boolean
coc : Unconsciousness
imm : Immortality : Boolean
mor : Morale : + means enemies are more afraid of you
mut : Mute : Boolean
ors : AI Avoidance
ran : Robbed Aggression
sur : Surrender : Boolean
ufo : Unconsciousness : Boolean
upr : Force Consciousness : Boolean
sle : Sleep : Boolean

# ------ Undocumented ------
bar : Barter
act : UNKNOWN
dbf : Dice
dtf : Dice
lcs : Steady Hand ??
lpb : Lockpicking ???
lsa : Lockpicking ???
osb : Firm Hand ???
pbs : Shield ???
prb : Perk ???
pt5 : Dice
ptl : Dice
vib : ???

3. In the perk_buff.xml, add a new row linking your new perk and new buff.

<row buff_id="ffabf5f5-0ce4-4c25-aeb6-7c10466221dd" perk_id="83a8b86b-9ff1-4e2f-a4ba-fc6530dce122" />
Edited by Xylozi
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I'm pretty sure its possible to create a perk that is hidden (visibility="0"). This lets you create a buff without a visible perk related to it.

 

You can assign the perk automatically to Henry by adding the perk to the soul2perk.xml. Henry's soul_id is 43144483-f3bb-fab8-9ceb-f77e3020598a

Edited by Xylozi
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There are a few rpg params that affect the distribution:

MaxPerkPoints                   # total number of perk points player will gain per stat/skill
MinPerkPoints                   # no leftovers if the number of perk points would be <= than this
MinLeftoverPerks                # preferred number of leftovers
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There are a few rpg params that affect the distribution:

MaxPerkPoints                   # total number of perk points player will gain per stat/skill
MinPerkPoints                   # no leftovers if the number of perk points would be <= than this
MinLeftoverPerks                # preferred number of leftovers

Thanks. I will try playing with them and see the results.

I wander why some skills have some particular distributions.

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