Difference between revisions of "Critical Hit Chance Formula"

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===Variables===
Critical Hit Chance = PerkModifiers(ConditionPenalty * CritChanceActorValue * WeaponMultiplier) + VATSBonus
;[[fVATSCriticalChanceBonus]] = V
:This value is 0 when outside of VATS mode regardless of the value of the game setting


;[[fWeaponConditionCriticalChanceMult]] = CM
'''PerkModifiers''' is a function that modifies the input value using any perks active on the actor that have a "Calculate My Critical Hit Chance" [[Entry Point]] and returns the result.


;Weapon condition = C
'''ConditionPenalty''' = fWeaponConditionCriticalChanceMult * ''WeaponCondition''
:This value is 10 when your weapon is at 100% condition, 9 at 90%, and etc


;Actor luck value = L
'''CritChanceActorValue''' is an [[ActorValue]]. The base value = fAVDCritLuckBase + fAVDCritLuckMult * ''ActorLuckValue''
:The value of the CritChance actor value can be increased or decreased by certain abilities, effects, perks, enchanted armors, and consumables. For example, the Finesse perk is implemented by granting the player an ability which increases critical chance by 5. With this perk, the base value calculated from luck is further increased by 5 when calculating the CritChance actor value.


;[[fAVDCritLuckBase]] = LB
'''WeaponMultiplier''' is the "Crit % Mult" specified on the [[Weapons|weapon form]]. For automatic weapons, this value is divided by the "Fire Rate", also specified on the weapon form. For example, an Assault Rifle has a "Crit % Mult" of 1.0, and a "Fire Rate" of 8, so the WeaponMultiplier will be 0.125.


;[[fAVDCritLuckMult]] = LM
'''VATSBonus''' = fVATSCriticalChanceBonus * ''IsUsingVATS''


;Weapon crit multipler specified on the [[Weapons|weapon form]] = WM
:Automatic weapons use this value divided by the Fire Rate. For example, an Assault Rifle has a crit multiplier of 1.0, and a Fire Rate of 8. Therefore each bullet has a 0.125 multiplier to the critical percent chance.


;Perks that have a "Calculate My Critical Hit Chance" entry point = PerkModifiers(x)=> y
''ActorLuckValue'' is the actor's luck value.
:This "variable" is treated as a function that applies all perk modifiers and returns the new critical hit chance


;Any effects active on the actor which modify the "Critical Chance" (aka CritChance) actor value = CCB
''WeaponCondition'' is 10 at 100% condition, 5 at 50% condition, and etc.
:For example, the Finesse perk is implemented as an ability which applies the "Increase Critical Chance" effect with a magnitute of 5, resulting in a value of 5 for this variable.


===Formula===
''IsUsingVATS'' is 1 if the attack is being made with VATS, 0 otherwise.
Critical Hit Chance = V + PerkModifiers(C * CM * (LB + L * LM + CCB) * WM)
 
=== Game settings used by this formula ===
 
{{SettingGroupHeader}}
{{SettingGroupSetting
|Name = fWeaponConditionCriticalChanceMult
|Default = 0.1
|Description = Used when calculating ''ConditionPenalty''
}}
{{SettingGroupSetting
|Name = fAVDCritLuckBase
|Default = 0
|Description = Used when calculating the ''CritChanceActorValue''
}}
{{SettingGroupSetting
|Name = fAVDCritLuckMult
|Default = 1
|Description = Used when calculating the ''CritChanceActorValue''
}}
{{SettingGroupSetting
|Name = fVATSCriticalChanceBonus
|Default = 15
|Description = Applied as a bonus chance to critically hit when attacking with VATS. A value of 100 adds 100% chance to crit, 15 is 15% chance to crit, etc.
}}
{{SettingGroupFooter}}

Latest revision as of 23:04, 14 January 2009

Critical Hit Chance = PerkModifiers(ConditionPenalty * CritChanceActorValue * WeaponMultiplier) + VATSBonus

PerkModifiers is a function that modifies the input value using any perks active on the actor that have a "Calculate My Critical Hit Chance" Entry Point and returns the result.

ConditionPenalty = fWeaponConditionCriticalChanceMult * WeaponCondition

CritChanceActorValue is an ActorValue. The base value = fAVDCritLuckBase + fAVDCritLuckMult * ActorLuckValue

The value of the CritChance actor value can be increased or decreased by certain abilities, effects, perks, enchanted armors, and consumables. For example, the Finesse perk is implemented by granting the player an ability which increases critical chance by 5. With this perk, the base value calculated from luck is further increased by 5 when calculating the CritChance actor value.

WeaponMultiplier is the "Crit % Mult" specified on the weapon form. For automatic weapons, this value is divided by the "Fire Rate", also specified on the weapon form. For example, an Assault Rifle has a "Crit % Mult" of 1.0, and a "Fire Rate" of 8, so the WeaponMultiplier will be 0.125.

VATSBonus = fVATSCriticalChanceBonus * IsUsingVATS


ActorLuckValue is the actor's luck value.

WeaponCondition is 10 at 100% condition, 5 at 50% condition, and etc.

IsUsingVATS is 1 if the attack is being made with VATS, 0 otherwise.

Game settings used by this formula[edit | edit source]

Setting Default Description
fWeaponConditionCriticalChanceMult 0.1 Used when calculating ConditionPenalty
fAVDCritLuckBase 0 Used when calculating the CritChanceActorValue
fAVDCritLuckMult 1 Used when calculating the CritChanceActorValue
fVATSCriticalChanceBonus 15 Applied as a bonus chance to critically hit when attacking with VATS. A value of 100 adds 100% chance to crit, 15 is 15% chance to crit, etc.


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