npc_osprey

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npc_osprey is a point entity available in Black Mesa.

They are the  Bell Boeing V-22 Osprey helicopters used by the HECU. They are seen in open outdoor areas, especially in Surface Tension and "Forget About Freeman!". Soldiers can also rappel out of the back of the osprey, acting as reinforcements. The player usually uses a RPG to destroy them.

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

Keyvalues

Name of Template NPC (1-8) (NPCTemplate(1-8))

BaseNPC keyvalues

CBaseCombatCharacter: Relationship (Relationship) <string> !FGD <string|targetname or classname> <string|disposition> <int|rank> Changes whether this entity likes or dislikes certain other things. Used like the ai_relationship entity, with this entity as the subject. Values for disposition are: D_HT: Hate D_FR: Fear D_LI: Like D_NU: Neutral Physics Impact Damage Scale (physdamagescale) <float> Multiplier for damage amount when this entity is hit by a physics object. With a value of 0 the entity will take no damage from physics. CAI_BaseNPC: Target Path Corner (target) <targetname> The path_corner that this NPC will move to after spawning. Squad Name (squadname) <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 (hintgroup) <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 (hintlimiting) <boolean> Limits NPC to using specified hint group for navigation requests. Does not limit local navigation. Sleep State (sleepstate) <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 (wakeradius) <float> Auto-wake if player comes within this distance. Wake Squad (wakesquad) <boolean> Wake all of the NPCs squadmates if the NPC is woken. Enemy Filter (enemyfilter) <targetname> Filter entity to test targets against. Ignore unseen enemies (ignoreunseenenemies) <boolean> Prefers visible enemies, regardless of distance or relationship priority. DamageFilter: Damage Filter (damagefilter) <targetname> Name of the filter_damage_type entity that controls which entities can damage us.

Inputs

BeginRappellingGrunts

The Osprey should rappel grunts at the current path node

RemoveGrunts

Removes all grunts on the map that belong to the osprey

WaitHereTillReady

The Osprey will wait at this path node until it is ready to deploy new grunts

RappelToTarget <string>

Grunts rappeled from osprey will rappel down within range of the target

KillRappelingGrunts

Kills the grunts which are currently rappeling down

BMBaseHelicopter

MoveTopSpeed The helicopter will immediately move at top speed toward its current goal, or in its current orientation if it's on top of its goal. MoveSpecifiedSpeed <float> The helicopter will immediately move at the specified speed (you provide this as parameter override in units per second) towards its current goal. ChangePathCorner <targetname> Tell the helicopter to move to a path corner on a new path. SelfDestruct Self Destruct. Activate Activate. Use to wake up a helicopter that spawned with the 'Await Input' spawnflag on. SetTrack <targetname> Set a track for the helicopter to adhere to. The helicopter will do nothing if it's on the same path, and will move to the closest point on the specified track if it's on a different path. FlyToSpecificTrackViaPath <targetname> The helicopter will first fly to the closest point on the path if it's on a different path. Then it'll fly along the path to the specified track point. FlyToPathTrack <targetname> The helicopter will fly to the given path_track. StartPatrol Start patrolling back and forth along the current track. StopPatrol Stop patrolling back and forth along the track. This will cause the helicopter to come to rest at the track which he's currently flying toward. ChooseFarthestPathPoint When tracking an enemy, choose the point on the path furthest from the enemy, but still in firing range. ChooseNearestPathPoint When tracking an enemy, choose the point on the path nearest from the enemy. StartBreakableMovement The helicopter is now allowed to disobey direct commands to go to particular points if it senses an enemy. It will move to the closest point (or farthest point, if ChooseFarthestPathPoint is used), on the path if it senses an enemy. StopBreakableMovement The helicopter can no longer disobey direct commands. It will continue to fly along it's patrol path or to it's specified target even if it senses an enemy. EnableRotorSound Starts the chopper's rotors making noise (normal behaviour) DisableRotorSound Stops the noise made by the rotors EnableRotorWash Makes the chopper exert a force on physics objects underneath its rotor, and produce a wind pattern on any water (normal behaviour) DisableRotorWash Turns off the forces and wind pattern SetAngles  !FGD InputStartLeading  !FGD InputStopLeading  !FGD

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 disposition are:

• D_HT: Hate
• D_FR: Fear
• D_LI: Like
• D_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:

SetDamageFilter <string>

Sets the entity to use as damage filter. Pass in an empty string (no parameter) to clear the damage filter.

Outputs

OnReadyToMoveDeployZone

The Osprey has enough grunts to deploy therefore should move on to the next path node

OnReadyToRetreat

The Osprey has finished deploying grunts therefore should move on to the next path node

BaseNPC Outputs

OnDamaged Fired when this NPC takes damage (!activator is the damage inflictor). 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]). OnDeath Fired when this NPC is killed (!activator is the killer). OnDenyCommanderUse Fired when this NPC has refused to join the player's squad. OnForcedInteractionAborted Fired when the NPC aborts a forced interaction for some reason (target NPC died, couldn't be pathed to, etc.). OnForcedInteractionStarted Fired when the NPC starts a forced interaction. OnForcedInteractionFinished "NPCs in actbusies can no longer perform dynamic interactions." Todo: What does this mean? OnHalfHealth Fired when this NPC reaches half of its maximum health. OnHearCombat Fired when this NPC hears combat sounds. OnHearPlayer Fired when this NPC hears the player. OnHearWorld Fired when this NPC hears a sound (other than combat or the player). OnFoundEnemy <targetname> Fired when this NPC establishes 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. OnLostEnemyLOS Fired when this NPC loses line of sight to its enemy. OnFoundPlayer <targetname> Fired when this NPC establishes 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. OnLostPlayerLOS Fired when this NPC loses line of sight to its enemy, and that enemy is a player. OnSleep Fired when this NPC enters a sleep state. OnWake Fired when this NPC comes out of a sleep state.

Also see: npc_apache