npc_alyx

From Valve Developer Community

Alyx Vance is arguably Half-Life 2's lead character besides Gordon. She has no known special abilities, though there are orphaned dive/roll animations in her model, and she can wield the 'alyxgun'.

Note:Some keyvalues, flags, inputs, or outputs might not affect an NPC based on the functionality and coding of the NPC.

Keyvalues

Weapons <choices>

Alyx is the only NPC with a unique held weapon.

World model <string>: Model to appear as
Prevent picking up weapons? <bool>: Prevent Alyx from picking up weapons she finds on the ground

Parentname:

Parent <targetname>: Specifies the targetname of this entity's movement parent. Entities with parents move with their parent.

PlayerCompanion:

Always transition <bool>: This NPC will always teleport to a Player Squad Transition Point if they're not within the trigger_transition.
Prevent picking up weapons? <bool>: This NPC will NOT be allowed to pick up weapons they find on the ground.
Is this a vital ally? <bool>: This NPC will cause the game to end if killed.

TalkNPC:

Use Sentence <string>: Sentence spoken when the NPC gets used by a player
Un-Use Sentence <string>: Sentence spoken NPC gets used again
Don't Use Speech Semaphore <bool>: If set, friendly NPCs are not allowed to speak if another friendly NPC is speaking. In some cases we don't want speaking NPCs to prevent other NPCs from speaking (for instance, if there is a friendly NPC speaking for a long time on a monitor). To make this NPC not prevent other NPCs from talking, make it not grab the semaphore when it speaks.

BaseNPC:

Target Path Corner <targetname>

The path_corner that this NPC will move to after spawning.

Squad Name <string>

NPCs that are in the same squad (i.e. have matching squad names) will share information about enemies, and will take turns attacking and covering each other.

Hint Group <string>

Hint groups are used by NPCs to restrict their hint-node searching to a subset of the map's hint nodes. Only hint nodes with matching hint group names will be considered by this NPC.

Hint Limit Nav <bool>

Limits NPC to using specified hint group for navigation requests, but does not limit local navigation.

Sleep State <choices>

Holds the NPC in stasis until specified condition. See also 'Wake Radius' and 'Wake Squad'.

0: None
1: Waiting for threat
2: Waiting for PVS
3: Waiting for input, ignore PVS
4: Auto PVS
5: Auto PVS after PVS

Wake Radius <float>: Auto-wake if player within this distance
Wake Squad <bool>: Wake all of the NPCs squadmates if the NPC is woken
Enemy Filter <targetname>: Filter entity to test targets against
Ignore unseen enemies <bool>
Physics Impact Damage Scale <float>: Scales damage energy when this character is hit by a physics object. With a value of 0 the NPC will take no damage from physics.

DamageFilter:

Damage Filter <targetname>: Name of the filter_damage_type that controls what damages this entity.

ResponseContext:

Response Contexts <string>: Pre-defined response system contexts for this entity. Format is key:value,key:value,...

Shadow:

Disable shadows <bool>: Prevent the entity from creating cheap render-to-texture shadows. Does not affect shadow mapping.

RenderFields:

Render Mode <choices>: Set a non-standard rendering mode on this entity. See Render Modes for details.
FX Amount (0 - 255) <int>: Intensity of the selected render mode.
FX Color (R G B) <color255>: Color used by the selected render mode (if applicable).
Disable Receiving Shadows <bool>: Prevents the entity from receiving shadows. To do: RTT and/or shadow map?

RenderFXChoices:

Render FX <choices>: Several GoldSrc-era visibility modes which change the way the entity is rendered, typically by fading it in and out.

Angles:

Pitch Yaw Roll (Y Z X) <angle>: This entity's angular orientation in the world.

Targetname:

Name <string>: The targetname other entities refer to this entity by.

Flags

1 : Wait Till Seen
2 : Gag :No IDLE sounds until angry
4 : Fall to ground :Unchecked means *teleport* to ground
8 : Drop Healthkit
16 : Efficient - Don't acquire enemies or avoid obstacles
128 : Wait For Script
256 : Long Visibility/Shoot
512 : Fade Corpse
1024 : Think outside PVS
2048 : Template NPC: This entity is a template for the npc_template_maker. It will not spawn automatically and cannot be used with point_template.
4096 : Do Alternate collision for this NPC (player avoidance)
8192 : Don't drop weapons
16384 : Ignore player push : Dont give way to player

Inputs

AllowInteraction: Allow Alyx's 'hacking' AI to run.
DisallowInteraction: Disallow Alyx's 'hacking' AI.
AllowDarknessSpeech <bool>: Enables or disables Alyx's darkness speech ('where are you', etc).
EnterVehicle <targetname>: Make Alyx enter the vehicle specified by name.
ExitVehicle: Make Alyx exit the vehicle she's in.
SetReadinessLow: Set readiness to calmest state (Bored)
SetReadinessMedium: Set readiness to moderate (Alert)
SetReadinessHigh: Set readiness to highest. (Combat imminent)
SetReadinessPanic: Set readiness to panic state (Special)
LockReadiness <float>: Lock readiness at current setting for x seconds -1 = forever, 0 = unlock now

Parentname:

SetParent <targetname>: Move with this entity. See Entity Hierarchy (parenting).
SetParentAttachment <string>: Attach to a named attachment on the current parent. The entity will teleport so that the position of its root bone matches that of the attachment.
SetParentAttachmentMaintainOffset <string>: As above, but without teleporting. The entity retains its position relative to the attachment at the time of the input being received.
ClearParent: Removes this entity from its current movement hierarchy.

PlayerCompanion:

OutsideTransition: Use this input to teleport the NPC to a hint node with the "Player Squad Transition Point" hint type
EnableAlwaysTransition
DisableAlwaysTransition: This NPC will (or will not) always teleport to a Player Squad Transition Point even if they're not within the trigger_transition
MakeGameEndAlly
MakeRegularAlly: Decide whether the game should end if this character dies
EnableWeaponPickup
DisableWeaponPickup: Enable/disable weapon pickup
GiveWeapon <classname>: Gives the NPC a weapon immediately

TalkNPC:

SpeakResponseConcept <string>: Speak the specified response concept immediately.

BaseNPC:

SetRelationship <string|targetname or classname> <string|disposition> <int|rank>

Changes whether this NPC likes or dislikes certain others. Used like the ai_relationship entity, with this NPC as the subject.

Values for disposition are:

D_HT: Hate
D_FR: Fear
D_LI: Like
D_NU: Neutral

SetHealth <int>: Set the NPC's health.
AddHealth <int> (New with Orange Box)
RemoveHealth <int> (New with Orange Box): Add to or remove from the NPC's health.
SetBodyGroup <int>: HACK: Sets this NPC's body group (from 0 - n). You'd better know what you are doing!
physdamagescale <float>: Scales the damage taken when this character is hit by a physics object. 0 means this feature is disabled for backwards compatibility.
Ignite: Burst into flames.
IgniteLifetime <float>: Ignite for the given number of seconds.
IgniteNumHitboxFires <int>: Ignite with the given number of hitbox fires.
IgniteHitboxFireScale <float>: Ignite with the given hitbox fire scale.
Break: Smash into pieces. If this is not possible, disappear.
BecomeRagdoll (New with Orange Box): Become a ragdoll without removing yourself?
StartScripting
StopScripting: Enter/exit scripting state, where NPCs ignore a variety of stimulus that would make them break out of their scripts. They ignore danger sounds, ignore +USE, don't idle speak or respond to other NPC's idle speech, and so on.
Assault <targetname>: Start an assault at the given rally point.
SetSquad <string>: Change the name of this NPC's squad. Leaving the parameter blank will remove the NPC from any existing squad.
Wake: Wakes up the NPC if it is sleeping.
ForgetEntity <targetname>: Clears out the NPC's knowledge of a named entity.
GagEnable
GagDisable: Gagged NPCs won't speak (or moan, caw, etc.) unless made to be a choreographed scene.
IgnoreDangerSounds <float>: Ignore danger sounds for the specified number of seconds.
HolsterWeapon
UnholsterWeapon: Force the NPC to holster or unholster their weapon. Ignored if the NPC is scripting or if the NPC doesn't use weapons.
HolsterAndDestroyWeapon: As HolsterWeapon, except the weapon is destroyed once it has been concealed.
ForceInteractionWithNPC <string>: Force the NPC to use a dynamic interaction with another NPC. Syntax is <targetname> <dynamic interaction>.
UpdateEnemyMemory <targetname>: Update (or create) this NPC's memory of of the given entity.

RenderFields:

Color <color255>: Set the rendercolor.
Alpha <byte>: Set the renderamt.

DamageFilter:

SetDamageFilter <targetname>: Sets the entity to use as damage filter. Pass an empty string ("") to clear.

ResponseContext:

AddContext <string>: Adds to the entity's list of response contexts. Format is <key>:<value>.
RemoveContext <string>: Remove a context from this entity's list. The name should match the key of an existing context.
ClearContext: Removes all contexts from this entity's list.

Shadow:

EnableShadow
DisableShadow: Control the entity's cheap render-to-texture shadow. Does not affect shadow mapping.

Targetname:

Kill: Removes this entity from the world.
KillHierarchy: Removes this entity and all its children from the world.
AddOutput <string>: Evaluates a keyvalue/output on this entity. It can be potentially very dangerous, use with care.; Format: <key> <value>; Format: <output name> <targetname>:<inputname>:<parameter>:<delay>:<max times to fire, -1 means infinite>
FireUser1 to FireUser4: Fire the OnUser outputs; see User Inputs and Outputs.

Outputs

OnFinishInteractWithObject: Fires when Alyx finishes interacting with an object (usually hacking it).
OnPlayerUse: Fires when a player +USEs Alyx.

BaseNPC:

OnDamaged: Fired when this NPC takes damage (activator is the damage inflictor)
OnDeath: Fired when this NPC is killed (activator is the killer)
OnHalfHealth: Fired when this NPC reaches half of its maximum health
OnHearWorld: Fired when this NPC hears a sound (other than combat or the player)
OnHearPlayer: Fired when this NPC hears the player
OnHearCombat: Fired when this NPC hears combat sounds
OnFoundEnemy <targetname>: Fired when this NPC establishes line of sight to its enemy
OnLostEnemyLOS: Fired when this NPC loses line of sight to its enemy
OnLostEnemy: Fired when this NPC loses its enemy. Usually due to the enemy being killed/removed, or because this NPC has selected a newer, more dangerous enemy
OnFoundPlayer <targetname>: Fired when this NPC establishes line of sight to its enemy, and that enemy is a player
OnLostPlayerLOS: Fired when this NPC loses line of sight to its enemy, and that enemy is a player
OnLostPlayer: Fired when this NPC loses its enemy, and that enemy was a player. Usually due to the enemy being killed/removed, or because this NPC has selected a newer, more dangerous enemy
OnDamagedByPlayer: Fired when this NPC is hurt by a player (activator is the attacker or vehicle driver (if friendly fire))
OnDamagedByPlayerSquad: Fired when this NPC is hurt by a player OR by one of the player's squadmates (activator is the attacker or vehicle driver (if friendly fire))
OnDenyCommanderUse: Fired when this NPC has refused to join the player's squad
OnWake: Fired when this NPC comes out of a sleep state

Targetname:

OnUser1 to OnUser4: Fired in response to the FireUser inputs; see User Inputs and Outputs.
OnKilled (New with Left 4 Dead): Fired when the entity is killed and removed from the game.

npc_alyx

From Valve Developer Community

Contents

Keyvalues

Flags

Inputs

Outputs

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