Wikis / Unreal Wiki / Legacy:AI Scripting Reference

Commands for Unreal 2's AI Scripting system.

Commands

addammo

ammostring amount [maxclip] gives N units of specified ammo to NPC, if maxclip=1 makes sure clip is as full as possible

agentbind

inputname valuename sets and locks an agent input to a given value, for characters with agent-driven meshes

agentcall

actionname [wait] calls an agent action of the given name, for characters with agent-driven meshes

agentexecute

actiontext [wait] compiles and executes a GAL string on-the-fly as if were inside an action, and calls it

agentunbind

inputname unlocks an agent input previously locked and set with AgentBind

animloop

name [rate tweentime [wait]] loops specified anim on channel 0

animloopex

channel name [rate tweentime [wait]] loops specified anim on arbitrary channel

animplay

name [rate tweentime [wait]] plays specified anim on channel 0

animplayex

channel name [rate tweentime [wait]] plays specified anim on arbitrary channel

animrelease

allow NPC to control anims (currently idle only)

animtween

name [tweentime [wait]] tweens specified anim on channel 0

animtweenex

channel name [tweentime [wait]] tweens specified anim on arbitrary channel

call

label pushes line after current one and jumps to given label

callscript

scriptname pushes current script state and switches to specified file

callend

aborts any previously pushed call (can no longer return)

clearevents

clears any current onevents

cleartimers

clears any current general timers

cleartriggers

clears any current ontriggers

consolecommand

command executes given console command

debugai

0/1 enables/disables debug AI mode in controlled NPC

debugaievents

0/1 enables/disables debug events mode in controlled NPC

debugaiflags

### explicitely sets debug AI flags in controlled NPC

debugmode

flags enables/disables various debug modes for the script controller

decproperty

name property value [#] decrements (integer) property in named actor by 1 or by #

deployinventory

S [1] deploy given inventory item [alt deploy it]

destroy

destroy controlled NPC (and controller)

dialogdisable

topicname disable this dialog node

dialogenable

topicname enable this dialog node

dialogfar

topicname speaker1 [speaker2] starts dialog b/w 2 npcs regardless of distance

dialogfarwait

topicname speaker1 [speaker2] waits for dialog b/w 2 npcs to finish

dialoginitiate

speaker topicname tries to initiate given dialog with given target

dialogterminate

speaker tries to remove NPC from dialog

directionalpatrol

0/1 whether NPC faces in direction of patrol destination

dormant

0/1 [1] toggle whether NPC (Pawn and Controller) is dormant (bStasis=true and Physics=PHYS_None) [1] means stay dormant even if script removed?

dropinventory

S drop given inventory item

enableprobeevent

probename 0|1 enables/disables NPC probe event (for performance) e.g. enableprobeevent seeplayer 0 -> no more seeplayer events

enablexmphandling

0/1 enables/disables NPC reacting to XMP items (inert 0/1 sets this to 1/0 use enablexmphandling 0/1 to override this).

error

used internally

eventdisable

event disables event

eventenable

event enables event

eventwait

event waits until event occurs

findactor

[name Min Max Type Vis Num gotolabel targetlabel] searches for actors in level (all args optional)

fire

[duration] fire (weapon / animation-based) for given duration

firealt

[duration] alt fire (weapon / animation-based) for given duration

gib

[bDestroy] [gorelevel] gib controlled NPC. If gib fails, bDestroy determines if npc is killed or destroyed. Gore level overrides the gibset's default gore level

giball

targetclass [bDestroy] [gorelevel] gib all actors of the given class. . If gib fails, bDestroy determines if npc is killed or destroyed. Gore level overrides the gibset's default gore level

giveinventory

inventorystring gives the specified inventory item to the NPC

giveitemtoplayer

inventorystring [ammocount] give item to player, if ammocount treats as ammo and adds this much ammo to player's inventory

givetosseditem

inventorystring add item to tossed items list

gotoactor

targetname [dist [face]] sends NPC to specifed actor at specified dist (error if target not found), face=1 ==> try to face target (e.g. for initiating dialog)

gotoactorsafe

targetname [dist [face]] sends NPC to specifed actor at specified dist (not an error if target not found), face=1 ==> try to face target (e.g. for initiating dialog)

gotolabel

label jumps to given label

incproperty

name property value [#] increments (integer) property in named actor by 1 or by #

inert

0/1 toggles NPC reacting to sensory input – shorthand for toggling bump, hearnoise, seeplayer, tookdamage

handlergroup

denotes start of a new handler groups (can't be in one currently?)

handlergroupend

denotes end of a new handler groups (must be in one currently)

headtracking

0/1

jump

X Y Z launch NPC in given direction

kill

kill controlled NPC (goes into dying state)

killall

targetclass kill all actors of the given class

lockstep

name [f] maintain given or current distance from named actor (for keeping squads in formation)

message

string [0|1|2] displays the given message in-game (surround with "" for multiple words) 0: onscreen 1: log 2: onscreen and log

onevent

xxx [gotolabel ### [clear]] when event xxx occurs, jumps to given label (or disables previous onevent)

ontimer

index [delay repeat gotolabel ###] adds a general-purpose timer

ontrigger

name [gotolabel ###] when trigger with given event name occurs, jumps to given label (or disables previous ontrigger)

playsound

name sound [slot [volume [bNoOverride [Radius [Pitch]]]]] plays sound through named actor (or self=controlled NPC)

playsoundwait

name sound [slot [volume [bNoOverride [Radius [Pitch]]]]] plays sound through named actor (or self=controlled NPC) and script waits for sound to finish

playsoundtableslot

name slot play sound belonging to the specified group from named pawn's sound table

playsoundtableslotwait

name slot play sound belonging to the specified group from named pawn's sound table and script waits for sound to finish

removeinventory

[string] removes all [or the specified] inventory from the NPC

removeinventoryfromplayer

[string] removes all [or the specified] inventory from the player

removeitemfromplayer

inventorystring add item to player's inventory

removetosseditem

inventorystring remove item from tossed items list

resumepatrol

startlabel endlabel finds the "best" destination at which the resume patrolling and jumps to that line

return

returns to most recently pushed line or script state (error if no applicable)

rotate

#.# rotate #.# degrees clockwise (right) relative to forward

savedestination

copies GotoActorTarget into SavedDestination for later use with resumepatrol

sendevent

EventName [triggerpawns] triggers all Actors with tag that matches given Event, or all NPCs

setactorrangetest

target distance sets the InRangeActor and InRangeDistance for ActorInRange/ActorOutOfRange events

setaimodds

odds sets odds of hitting target when firing weapon under script control

setalert

0/1 controls whether NPC uses "alert" animations

setammo

ammostring amount [maxclip] makes sure NPC has exactly specified amount of given type of ammo, if maxclip=1 makes sure clip is as full as possible

setfocus

[name] set scripted focus to given actor or clear focus

sethealth

x.x sets controlled NPC's health to x.x

setinventory

targetname inventorystring sets target's selected inventory to x.x

setlocation

locationname [allowfail] move pawn to location of locationame

setlocationnamed

targetname locationname [allowfail] move actor matching targetname to location of locationame

setlocationvector

targetname X Y Z move targetname to given coordinates

setmovespeed

speed [stance] 0.01 to MaxDesiredSpeed (usually 1.0) – set speed used for scripted movement

setmovespeedauto

speed 0.01 to MaxDesiredSpeed (usually 1.0) – set speed used for autonomous movement

setorders

orders [OrdersObject [fparam [ordergiver]]] sets/clears orders

setphysics

physics

setproperty

targetname property value sets property in named actor to value

setproperties

classname property value sets given property in all actors which are a classname

setsatellite

satellitename [targetname] binds a mesh satellite node of the given name to the given target, for dynamic animations

setscript

filename [startlabel] switches over to the given script [at the given label]

setskill

skill set NPC's skill to given value (0.0..1.0)

setstance

stand / crouch / prone specifies stance that NPC should use while patrolling

setstationary

1/0 [1] makes NPC immobile/mobile, optionally forever

settacticalmovetype

0/1/2 sets tactical move type to use during scripted movement (0: none 1: basic 2: serpentine)

setweapon

weaponstring set NPC's weapon to specified one, spawning it if necessary

shutdown

1/0 makes NPC as inert as possible without actually making it dormant or removing its controller

sleep

[x.x] puts controller to sleep for x.x seconds (defaults to "forever")

sleeprand

[x.x] puts controller to sleep for random time in 0..x.x seconds (x.x defaults to 1.0)

spawn

targetname S [1 [filename [startlabel]]] spawn given actor at targetname's location, if 1 is given, failure = error, optionally gives spawned NPCs a script

stop

stops execution, detaches script controller

stopmovement

stops NPC movement

stopsound

slot [bStopNoOverrideSounds] stops any sounds played through the named actor on the specified sound slot

testactorinrange

name distance if given actor is outside given distance of pawn ==> next command skipped

testproperty

name property value property != value ==> next command skipped (string comparison)

testpropertyci

name property value property != value ==> next command skipped (case-insensitive string comparison)

testpropertye

name property value property != value ==> next command skipped (numerical comparison)

testpropertyg

name property value property <= value ==> next command skipped (numerical comparison)

testpropertyge

name property value property < value ==> next command skipped (numerical comparison)

testpropertyl

name property value property >= value ==> next command skipped (numerical comparison)

testpropertyle

name property value property > value ==> next command skipped (numerical comparison)

testrandom

float (if random number in 0.0..1.0 > value ==> next command skipped)

teststate

name name (false ==> next command skipped)

turntoactor

targetname [LOS [Lock]] turn NPC to face named actor, LOS=0 ==> LOS not needed, LOS=1 ==> LOS needed, LOS=2 ==> LOS not needed but turn anyway, Lock means target actor won't be cleared

unuse

name unuse the named actor

use

name use the named actor

usepickups

0/1 if 0, won't go after or pickup pickups

weaponload

load current weapon

WeaponSetAmmoType

ammoname

WeaponSupportsAltFire

weaponname 0/1 disables/enables NPC being able to alt fire weapon

WeaponSupportsFire

weaponname 0/1 disables/enables NPC being able to primary fire weapon

Events

ActorInRange

generated when the InRangeActor comes within the InRangeDistance

ActorOutOfRange

generated once when the InRangeActor comes goes out of the InRangeDistance

AnimEnd

goes to Controller unless Pawn has no Controller (dying state)

AutoBegin

goes to Controller, generated by U2NPCControllerScriptable

AutoEnd

goes to Controller, generated by Controller  : seems to be used for after fighting conditions

BumpEnemy

NotifyBump –> Controller –> BumpEnemy/Friend/Other

BumpFriend

NotifyBump –> Controller –> BumpEnemy/Friend/Other

BumpOther

NotifyBump –> Controller –> BumpEnemy/Friend/Other

BumpPlayer

not an actual event: eventwait BumpPlayer –> BumpEnemy/BumpFriend checked for player

DestinationReached

goes to Controller

DialogBegin

generated by Controller before destroyed

DialogUnPause

generated when dialog unpauses npc's script

Died

generated by Controller before destroyed

EnemyNotVisible

goes to Controller

HearNoiseFriendly

HearNoise –> Controller –> HearNoiseFriendly

HearNoiseOther

HearNoise –> Controller –> HearNoiseOther

HearNoiseThreat

HearNoise –> Controller –> HearNoiseThreat

InheritEnemy

generated when NPC could inherit another NPC's Enemy

ScriptedLanding

generated when NPC in scripted state lands (not passed back to NPC)

SeeAlertFriend

SeeAlertFriend –> Controller

SeeEnemy

SeeEnemy –> Controller

SeeFriend

SeeFriend –> Controller –> SeeFriend

SeeOther

SeeOther –> Controller –> SeeOther

SeePlayer

not an actual event: eventwait SeePlayer –> SeeEnemy/SeeFriend checked for player

TakeDamage

goes to Pawn

TookDamage

eventTakeDamage –> TookDamage generated by U2NPCControllerScriptable

TookDamageEnemy

generated internall from TookDamage for use by scripts only

TookDamageFriend

generated internall from TookDamage for use by scripts only

Trigger

goes to Pawn then Controller

Related Topics

• Artificial Intelligence – A super topic for all AI
• AI Scripting
• ScriptedPawn

Discussion

Unknown: Maybe explain what these are and where to put them?

Unknown: I'll put that stuff in Basic AI Scripting Tutorial when I make it.

SuperApe: This page needs help. Is it purely U2? It should be applicable to all versions. Since, I'm working on the Basic AI Scripting Tutorial, I may revise this.

Category:Legacy Mapping

Category:Legacy To Do – This page needs to be updated and made relevant to all Unreal versions as well as the current wiki structure.