npc_turret_ground
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Note:In the Nexus building (the d3_c17_10b map) these were seen entrenched within the floor, and could only be killed by blast damage, like lobbing a hand grenade inside its lift. That lift, and the ability to destroy the turret, is not part of this entity. (The lift was a func_door brush rig, and the player really killed an invisible npc_bullseye, filtered to be killed by blast damage only by a filter_damage_type, that signalled the turret to descend and lock.
Note:This entity may be neutral to the player by default! In such cases, an ai_relationship will be required.
Important:This entity operates in a very particular way. On spawn, it remembers its origin position as the "closed" position. It considers itself "closed" unless its Z coordinate is more than 1 unit away from that remembered position. If it is "closed", it will not produce the scanning beam effect and sounds (but will still attack things it hates).
As such, to make it work the same way as in Half-Life 2, it must be parented to another entity that can move up and down, and thus be moved up or down for more than 1 unit of distance. Once it moves, it'll start scanning. The Enable input will then make the turret fully active.
Bug:Rotating the turret after it activated causes the laser effect to dislocate from the gun.
Note:Some keyvalues, spawnflags, effect flags, inputs, or outputs might not affect an NPC, based on the functionality and coding of the NPC.
npc_turret_ground is a point entity available in 
Half-Life 2, 
Half-Life 2: Episode One, 
Half-Life 2: Episode Two, and 
Half-Life 2: Deathmatch. It creates a Combine ground turret.
Note:In the Nexus building (the d3_c17_10b map) these were seen entrenched within the floor, and could only be killed by blast damage, like lobbing a hand grenade inside its lift. That lift, and the ability to destroy the turret, is not part of this entity. (The lift was a func_door brush rig, and the player really killed an invisible npc_bullseye, filtered to be killed by blast damage only by a filter_damage_type, that signalled the turret to descend and lock.Note:This entity may be neutral to the player by default! In such cases, an ai_relationship will be required.Important:This entity operates in a very particular way. On spawn, it remembers its origin position as the "closed" position. It considers itself "closed" unless its Z coordinate is more than 1 unit away from that remembered position. If it is "closed", it will not produce the scanning beam effect and sounds (but will still attack things it hates).As such, to make it work the same way as in Half-Life 2, it must be parented to another entity that can move up and down, and thus be moved up or down for more than 1 unit of distance. Once it moves, it'll start scanning. The Enable input will then make the turret fully active.
Bug:Rotating the turret after it activated causes the laser effect to dislocate from the gun.Note:Some keyvalues, spawnflags, effect flags, inputs, or outputs might not affect an NPC, based on the functionality and coding of the NPC.Keyvalues
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CBaseCombatCharacter:
CAI_BaseNPC:
DamageFilter:
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Parentname:
- Parent (parentname) <targetname>
- Specifies a movement parent. An entity will maintain its initial offset from its parent. An attachment point can be added to the end of the name, separated by a comma.
Flags
BaseNPC flags
- Wait Till Seen : [1]
- Prevents this NPC from seeing (or being seen) until it enters a player's viewcone.
- Gag : [2]
- Won't make IDLE sounds until it's angry.
- Fall to ground (unchecked means teleport to ground) : [4]
- Drop Healthkit : [8]
- Causes this NPC to drop an item_healthvial upon dying.
- Efficient : [16]
- Don't acquire enemies or avoid obstacles
- Wait For Script : [128]
- Forces this NPC to "wait" in an idle state until it finishes playing a scripted_sequence.
- Long Visibility/Shoot : [256]
- By default, increases a NPC's sight range to
6,000units and allows it to attack from anywhere within that distance.
- Fade Corpse : [512]
- Think outside PVS : [1024]
- Allows this NPC to run its regular AI outside of any player's PVS.
- Template NPC : [2048]
- Marks this NPC as a template for entities like npc_template_maker. The NPC will not spawn on its own. This is not needed for point_template.
- Do Alternate collision for this NPC (player avoidance) : [4096]Note:This flag is disabled in episodic for player companions, because the
StartScriptinginput does this.
- Don't drop weapons : [8192]
- Ignore player push : [16384] (in all games since
) - Entity won't give way to player.
Inputs
BaseNPC inputs
CAI_BaseNPC:
- ActivateSpeedModifier !FGD
- DisableSpeedModifier !FGD
- Break
- Smash into pieces. If this is not possible, disappear.
- BecomeRagdoll (in all games since )
- Remove itself and instantly become a ragdoll with zero force (just go limp). OnDeath, etc. outputs will NOT be fired.
- ForceInteractionWithNPC <string> <string> (in all games since )
- Force the NPC to use a dynamic interaction with another NPC. Syntax is <targetname> <dynamic interaction>.
- ForgetEntity <targetname>
- Clears out the NPC's knowledge of a named entity.
- UpdateEnemyMemory (in all games since )
- Update (or create) this NPC's memory of of the given entity.
- GagEnable
- GagDisable
- Gagged NPCs won't speak (or moan, caw, etc.) unless made to be a choreographed scene.
- HolsterWeapon (in all games since )
- UnholsterWeapon (in all games since )
- Force the NPC to holster or unholster their weapon. Ignored if the NPC is scripting or if the NPC doesn't use weapons.
- HolsterAndDestroyWeapon (in all games since )
- Same as
HolsterWeapon, except the weapon is destroyed once it has been concealed.
- IgnoreDangerSounds <float>
- Ignore danger sounds for the specified number of seconds.
- InsideTransition !FGD
- OutsideTransition !FGD
- SetBodyGroup <integer>
- HACK: Sets this NPC's body group (from 0–n).
- SetEnemyFilter <string>
- SetHealth <integer>
- Set the NPC's health.
- SetMaxLookDistance <float> (only in
) - Sets the maximum look distance for the NPC. Defaults are 2048 and 6000 for long range NPCs.
- 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
dispositionare:D_HT: HateD_FR: FearD_LI: LikeD_NU: Neutral
- SetSquad <string>
- Change the name of this NPC's squad. Leaving the parameter blank will remove the NPC from any existing squad.
- 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 NPCs' idle speech, and so on.
- Wake
- Wakes up the NPC if it is sleeping.
CBaseCombatCharacter:
- KilledNPC !FGD
- Tells the entity it killed something. Despite the name, this can include a player. This input will be automatically sent by the victim when they die.
- physdamagescale <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:
Parentname:
- SetParent <string>
- Move with this entity. See Entity Hierarchy (parenting).
- SetParentAttachment <string>
- Change this entity to attach to a specific attachment point on its parent. The entity will teleport so that the position of its root bone matches that of the attachment. Entities must be parented before being sent this input.
- 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 the the movement hierarchy, leaving it free to move independently.
Outputs
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See also
Categories:
- TODO rewrite lang to LanguageBar
- Non-internal Half-Life 2 entities
- Half-Life 2 entities
- Half-Life 2 point entities
- Non-internal Half-Life 2: Episode One entities
- Half-Life 2: Episode One entities
- Half-Life 2: Episode One point entities
- Non-internal Half-Life 2: Episode Two entities
- Half-Life 2: Episode Two entities
- Half-Life 2: Episode Two point entities
- Non-internal Half-Life 2: Deathmatch entities
- Half-Life 2: Deathmatch entities
- Half-Life 2: Deathmatch point entities
- Immobile NPCs
- Pages with uncategorized bugs
- NPC entities
- Half-Life 2 NPCs