Npc metropolice
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Entity Description
Civil protectors who make up the Combine's brutal, not-so-secret police force. They are usually seen beating civilians or being beaten by civilians. They have many names, but their official title is "Civil Protection".
In combat, individual cops slowly move towards their enemy and usually try to overwhelm them with numbers. They will rarely take cover unless they take critical damage. They can also carry up to two deployable manhacks on their left shoulder, specified via keyvalue. They deploy manhacks individually by grabbing one from their shoulder and throwing it overhead, after which the manhack defies gravity and deploys in mid-air. They usually deploy manhacks the moment they see an enemy, but if other cops in the squad have manhacks, only one of them may deploy their manhack and the other(s) will deploy later. If a cop is killed while holding a manhack in their hand to deploy it, the manhack will rise from their body. If the manhack is still on their shoulder when they die, the manhack will not be deployed at all and will stay on the body's shoulder.
Bug:Standing directly in front of a cop while they are deploying a manhack may provoke them to suddenly return to attacking you before they can deploy the manhack, causing the manhack to stick to the NPC's hand. This is not believed to have any effect on their AI or collision testing, but the manhack will not be deployed until the cop dies. This can be worked around with the "Prevent manhack toss" spawnflag and the "EnableManhackToss" input. [todo tested in ?]If a npc_metropolice is armed with an SMG and the player is in the airboat, the cop can "stitch" by shooting a meandering, closing path of bullets into the water in front of the vehicle. See the "Always stitch" and "No far stitching" spawnflags for more control over usage and range.
The "pre-criminal" AI is used at the beginning of Half-Life 2 before the player becomes a criminal. It works best when the NPC is carrying a stunstick. They will give up to 3 warnings when the player pesters them in any way, which will gradually make the cop more aggressive and more prepared to deal with the player. When the officer hasn't given the player any warnings, they will give a warning and push the player away if they get too close. They may also watch the player diligently. If the officer has already given the player a warning, they will activate their stunstick before pushing the player away again, giving a second warning. On their third warning, they will activate their stunstick if the player gets even remotely close and they will use it against the player to ward them off, sometimes chasing the player for 3-7 seconds. The player normally doesn't take damage from any of this. Throwing a physics object at an officer will cause them to chase the player immediately, regardless of how many warnings they have given the player. If they are not allowed to respond to the player's actions ("Allowed to respond to thrown objects" flag disabled), they will search for another nearby npc_metropolice who can respond and the other officer will chase the player instead. This AI works well with ai_goal_actbusy (acting busy) or ai_goal_police (guarding an area). The pre-criminal AI can be activated with the global "gordon_precriminal", shown in the editor as "Gordon pre-criminal".
Note:Some keyvalues, spawnflags, effect flags, inputs, or outputs might not affect an NPC, based on the functionality and coding of the NPC.Dedicated Console Variables
- sk_metropolice_health <int>
- A metrocop's spawn health.
- sk_metropolice_stitch_reaction <int>
- How close to the airboat should Metrocops begin stitching.
- sk_metropolice_stitch_at_hitcount <int>
- Number of times a stitching Metrocop can hit a nearby player.
- sk_metropolice_stitch_behind_hitcount <int>
- Number of times a stitching Metrocop can hit a player looking at it.
- sk_metropolice_stitch_tight_hitcount <int>
- Number of times a stitching Metrocop can hit a player from behind.
- sk_metropolice_stitch_along_hitcount <int>
- Number of times a stitching Metrocop can hit a player looking left/right.
Keyvalues
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CBaseCombatCharacter:
CAI_BaseNPC:
DamageFilter:
|
RappelNPC:
- Waiting to Rappel? (waitingtorappel) <boolean>
- If yes, this NPC spawns suspended in air and awaits a
BeginRappelinput. It will then spawn a zipline and slide down. When it hits the ground, NPC will cut away the line and try to move forward a few feet to make room for the next NPC. The NPC will not attempt to clear its landing space if it cannot do so by taking a few steps forward.
- Weapons ([todo internal name (i)]) <choices>
- What weapon this Metrocop should spawn with. Choices are:
- Pistol
Tip:Cops have bad aim with the pistol, so they will periodically take a couple steps toward the player if they can path to him. - SMG1
- Stun Stick
- Shotgun Bug:This NPC doesn't have proper animations for this weapon. [todo tested in ?]
- Nothing
- Pistol
- Number of Manhacks ([todo internal name (i)]) <choices>
- Each Metrocop can carry and deploy up to two npc_manhacks.
- Pistol starts drawn ([todo internal name (i)]) <boolean>
- Whether or not the NPC's pistol should start holstered. The pistol cannot be unholstered with the UnholsterWeapon input and can only be unholstered when the NPC spots an enemy. Has no effect on other weapons.Note:When an officer's pistol starts undrawn, it actually starts invisible and becomes visible after they play the unholoster animation. They will still use pistol animations and they are susceptible to the bug below.
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.
- 131072 : Simple cops : Lowers the NPC's health to 26 instead of 40 and uses more dramatic flinch animations for certain hit-boxes. Used in the early canal levels of the game.
- 524288 : Always stitch : This forces the stitching behavior to occur. If the metrocop is armed with an SMG and the player is beneath them, they will shoot a meandering, closing path of bullets.
- 1048576 : No chatter : Automatically gags the NPC and supposedly prevents some metrocop-specific speech that standard gagging doesn't. This is now believed to be non-functional.
- 2097152 : Arrest enemies : Causes the cop to "arrest" its opponents. Demonstration Video
- 4194304 : No far stitching : Stops stitching if the player is over 6000 units away.
- 8388608 : Prevent manhack toss : Prevents the cop from deploying their manhack(s). See the EnableManhackToss input.
- 16777216 : Allowed to respond to thrown objects : Only useful in pre-criminal mode. Allows the officer to chase players who have annoyed them. This does not override the settings of an
ai_goal_police. - 33554432 : Mid-range attacks (halfway between normal + long-range) : Extends the metrocop's preferred attack distance to 3500 units.
Inputs
- EnableManhackToss
- Enables manhack toss (which had been disabled by the spawnflag)
- SetPoliceGoal <targetname>
- Causes the NPC to police the area defined by an ai_goal_police.
- ActivateBaton
- Makes the NPC flick a held weapon_stunstick on.
RappelNPC:
- BeginRappel
- Start rappelling now.
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:
Outputs
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- OnStunnedPlayer
- Fires when the player is hit by a stun stick by this NPC.
- OnCupCopped (in all games since )
- Fired when this NPC is hit by a prop with the targetname "cupcop_can".
RappelNPC:
- OnRappelTouchdown
- Fires when done rappelling.