Entry Point

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Perk Entry Points (also known as Code Entry Points) are specific places in the code that are pre-defined. When you create a Perk Entry that refers to an Entry Point, you select from a list of these pre-defined Entry Points. Each one will also have a number of arguments that are relevant to that entry point.

An example entry point might be something like Calculate Weapon Damage, which occurs in the code when the perk owner is attacking an opponent, just before the damage is to be applied. Arguments for this particular entry point are the Attacker (the perk owner), the Target, and the Weapon being used (if any). These arguments can be used to filter the effect of the entry point against a set of conditions.

For example, a perk could modify weapon damage only when the weapon is an energy weapon. In that case, the conditions for the Weapon argument would include a pseudo-IsEnergyWeapon condition check, which could be achieved using GetWeaponSkill by checking if the weapon uses the EnergyWeapons Actor Value (#32) as its skill:

Once the entry point and the conditions are specified, the function call for that entry point can be selected from a drop down box. When selected, dialog options specific to that function will be enabled. An example function is the Add Value function. When selected, it will enable a box into which either a positive or negative number can be entered to modify the the current value. In the case of the Calculate Weapon Damage entry point, the value is the damage that has been currently calculated.

A full example is a perk entry that causes all Energy Weapon attacks made by the Perk Owner to do +5 damage against animals. The Calculate Weapon Damage entry point would be selected. In the condition filter for Weapon, GetWeaponSkill condition function would be checked, and it would check if the returned value is 32 (the EnergyWeapons AV code). In the condition filter for target, the GetIsCreatureType condition filter would be checked, and the first argument for that function would be supplied the value of 0 (the Animal code). The function chosen would be the Add Value function, and 5 would be input into the data box for Add Value.

List of Perk Entry Points

Entry Point	Description	Effect	Example
Activate	Run when the player activates something	Presents a choice list to the player that can trigger a script
Add Leveled List On Death	Adds a leveled list to the target's inventory when the player kills someone	Adds to the inventory of the target without causing OnAdd blocks to run
Adjust Book Skill Points	Run when the actor reads a book	Modifies the skill points gained	Comprehension
Adjust Drinking Radiation	Run then the player drinks from a placed water source	Modifies the radiation from placed water sources
Adjust Experience Points	Run when the player gains any experience	Modifies the experience gained	SwiftLearner
Adjust Gained Skill Points	Run when the player gains a level	Modifies the skill rate of the player	Educated
Adjust Limb Damage	Run when the actor's limbs are damaged by something	Modifies limb damage to actor	AdamantiumSkeleton
Adjust Range Penalty	Not Implemented	N/A
Calculate Buy Price	Run when the player tries to barter for items	Modifies the default price for an item when it is being purchased by the player. No matter how low the Buy Price modifier, an item cannot be bought for less than its base price, to prevent abuse.
Calculate Gun Spread	Run when the actor's gun spread is calculated	Modifies the actor's spread. See Also: Gun Spread Settings Has no effect on a Weapon's Min Spread in New Vegas
Calculate Inventory AP Cost	Not Implemented	N/A
Calculate Mine Explode Chance	Run when the actor comes within proximity of an armed mine	Modifies the chance of an armed mine detonating
Calculate My Critical Hit Chance	Run when calculating the actor's critical hit chance	Modifies the chance of a critical hit
Calculate My Critical Hit Damage	Run when calculating the actor's critical hit damage	Modifies critical damage
Calculate To Hit Chance	Run when the player queues a shot in VATS	Modifies the default to hit chance for the shot Broken as of 1.1.0035 patch(?)
Calculate Weapon Attack AP Cost	Run when the player attacks outside of VATS	Modifies the AP cost for attacking Broken
Calculate Weapon Damage	Run when calculating the actor's weapon damage to any target	Modifies weapon damage. No effect on critical damage Runs BEFORE the OnHit and SetOnHitEventHandler events.	CenterOfMass
Calculate Weapon Range	Not Implemented	N/A
Get Bad Karma	Not Implemented	N/A
Get Disposition	Run when an actor is calculating their disposition to the player	Modifies the normally calculated disposition
Get Good Karma	Not Implemented	N/A
Get Max Carry Weight	Run when the actor's max carry weight is calculated	Modifies max carry weight. Multiply affects Actor Effects. Set supercedes Actor Effects and other Perk Entries.
Get Should Assist	Not Implemented	N/A
Get Should Attack	Not Implemented	N/A
Hacking Science Bonus	Run when the player attempts to hack a terminal	Modifies the player's science skill for that hack attempt
Has Concentrated Fire	Run when the player enters VATS	If the value is modified to be non-zero, the player will be able to use concentrated fire
Has Paralyzing Palm	Run when the player enters VATS	If the value is modified to be non-zero, the player may use the paralyzing palm
Ignore Broken Lock	Run when the player attempts to open a broken lock	If the value is modified to be non-zero, another chance will be granted	Infiltrator
Ignore Locked Terminal	Run when the player attempts to activate a locked terminal	If the value is modified to be non-zero, another chance will be granted	ComputerWhiz
Ignore Running During Detection	Run when the player is being detected by another actor	If the value is modified to be non-zero, running will be ignored	SilentRunning
Modify Addiction Chance	Run when the actor takes a drug	Modifies the chance that the actor will become addicted
Modify Addiction Duration	Run when the actor becomes addicted to a drug	Modifies the duration of the addiction
Modify Enemy Critical Hit Chance	Run when calculating the an enemy's critical hit chance against the actor that has the perk	Modifies the chance
Modify Positive Chem Duration (Fallout 3)	Run when the actor takes a chem	Modifies the duration of the chem Does NOT behave the same in Vegas; see (Vegas) version.
Modify Recovered Health	Run when the player's natural healing rate is calculated	Modifies a bonus to the natural healing rate	BetterHealing
Mysterious Stranger	Run when the player enters VATS	If the value is modified to be non-zero, the VATS Helper Mysterious Stranger may appear	MysteriousStranger
Player Kill AP Reward	Run when VATS finishes if the player killed at least one enemy	Modifies the AP reward from 0 to another value	GrimReaperSprint
Fallout: New Vegas
Entry Point	Description	Effect
Action Point Cost		Modifies Action Point Cost of Weapons in VATS
Action Point Regen		Modifies fActionPointsRestoreRate, the passive regeneration of Action Points	DLC03NervesOfSteel
Adjust Heavy Weapon Weight	Run when calculating item weight.	Modifies the weight of a Weapon which weighs 10.0 lbs or more (after the DecreaseWeight Weapon Mod effect is applied). Note that this effect is only applied if the Player has the perk entry point, and affects the weight of the item no matter what container it's in.	NVDLC01HeavyWeight
Chance for Item on Fire	Not Implemented	N/A
Equip Speed		Modifies equip and holster animation speed	QuickDraw
Has Fast Travel Always		Access Fast Travel even when overencumbered	LongHaul
Has Improved Detection		Max compass range and VATS targeting of cloaked enemies Associated with EDE's companion perk	EnhancedSensors
Has Improved Item Detection		Item highlighting Associated with Rex's companion perk Visual controlled by fxSearchAndMark	SearchAndMark
Has Improved Spotting		Enemy highlighting Associated with Boones's companion perk Visual controlled by fxSpotterShader	Spotting
Has Jury Rigging		Access alternate and predefined - but far more inclusive - repair lists	JuryRigging
Has Meltdown		Enemies killed with Energy Weapons explode	Meltdown
Has Pip Hacker	Not Implemented	N/A
Has Unarmed Back Power Attack			RangerTakedown
Has Unarmed Counter Attack			ScribeCounter
Has Unarmed Crouched Power Attack
Has Unarmed Forward Power Attack			LegionAssault
Has Unarmed Left Power Attack			KhanTrick
Has Unarmed Right Power Attack			KhanTrick
Knockdown Chance
Miss Fortune	Run when the player enters VATS	If the value is modified to be non-zero, the VATS Helper Miss Fortune may appear.	MissFortunePerk
Modify Aiming Move Speed		Modifies the walking/running spread penalty	Run 'n Gun
Modify Attack Speed		Modifies Attack Speed (or "Fire Rate") of non-automatic weapons
Modify Chance for Ammo Item		Modifies the chance of receiving casings or drained ammunition. Each ammo type has its own chance.
Modify Damage Threshold (defender)	Run when the actor that has the perk is hit	Modifies the DT of the actor that has the perk
Modify Damage Threshold (attacker)	Run when a target is hit by the actor that has the perk Inversely to the (defender) version of this entry point, this entry point is read as "How much DT to subtract from the targeted actor. When using Add Value, positive values will subtract from the targeted actor's DT. Negative values will add to the targeted actor's DT.	Modifies the DT of the actor targeted by the actor that has the perk
Modify Item Damage		Modifies the damage dealt to an equipped item's health
Modify Light Items		If set to a non-zero value, modifies the weight of "Light" Items in the reference's inventory according to FPackRatModifier	PackRat
Modify Radiation Consumed		Modifies the radiation from ingestibles	LeadBelly
Modify Run Speed		Changes the Actor's movement speed. Calculation not always immediately updated. Calling SetSpeedMult with no speedMult argument can remedy this. Does not modify the actor's SpeedMult Actor Value.
Modify Positive Chem Duration (Vegas)	Run when the actor that has the perk takes any ingestible	Modifies the duration of the ingestible Does NOT behave the same in Fallout 3, see the (Fallout 3) version.
Modify Threat	Not Implemented	N/A
Modify Threat Range	Not Implemented	N/A
Modify Throwing Velocity	Run when ANY projectile is created.	Modifies the velocity of ANY projectile spawned by the perk owner (filtered by conditions). Use "GetWeaponAnimType == 9" to restrain the effect to throwing-type weapons.	HeaveHo
Modify Weapon Strength Req		Modifies Strength Requirement of Weapons. Add Value for this entry point is treated as "What value to remove from the Strength requirement." Add Value of 1 means a reduction of 1 point from the requirement. Add Value of -1 will add 1 point to the Strength requirement.	WeaponHandling
Reload Speed		Modifies Reload Speed of Weapons.	RapidReload
See Enemy Health		Enemy Health and DT values are displayed with their health bar.	LivingAnatomy
VATS HelperChance		Modifies the chance of a VATS Helper.	VATSHelperChallengePerk

See Also

• In scripts, the numerical effect of entry points can be accounted for with GetPerkModifier.
• Perk Entry Codes