sc2data-actors-visuals

name

sc2data-actors-visuals

description

SC2 Data Editor — Actors, visual effects, animations, sounds, and the actor event system in XML. Use when creating or modifying CActorUnit, CActorModel, CActorAction, CActorSound, CActorBeam, CActorSite, or any <On Terms="..." Send="..."/> event wiring. Covers actor creation, parent types, aliases, macros, death arrays, sound arrays, and all common actor messages. Do not use for game logic/damage (use sc2data-effects-weapons) or unit/ability data (use sc2data-units-abilities). Actors are client-side only — they cannot affect gameplay.

SC2 Data Editor – Actors & Visuals

Actors are the visual and audio layer of StarCraft II data. They respond to game events and play animations, spawn VFX models, and play sounds. Actors run locally on each client and are not network-synchronized — they have zero effect on gameplay state.

Key References

Resource	URL
Actors guide	https://s2editor-guides.readthedocs.io/New_Tutorials/04_Data_Editor/060_Actors/
Actor Messages Rundown	https://s2editor-guides.readthedocs.io/New_Tutorials/04_Data_Editor/061_Actor_Messages_Rundown/
SC2Mapster wiki	https://sc2mapster.wiki.gg/
Actors (wiki)	https://sc2mapster.wiki.gg/wiki/Data/Actors
Actor Events (wiki)	https://sc2mapster.wiki.gg/wiki/Data/Actors/Events
Actor Terms (wiki)	https://sc2mapster.wiki.gg/wiki/Data/Actors/Terms
Blizzard Tutorials – Actors.md	https://github.com/SC2Mapster/blizzard-tutorials/blob/master/docs/New_Tutorials/04_Data_Editor/060_Actors.md
ShadowDragon Base.SC2Data (real GameData XML reference)	https://github.com/ShadowDragonSC2/Base.SC2Data/tree/main/GameData

---

File placement: When creating actors for a new unit, put them in the unit's own self-contained XML file (GameData/Faction/UnitName/UnitName.xml), not in a monolithic ActorData.xml. Register the file via <Catalog path="..."/> in GameData.xml. See the sc2data-units-abilities skill for the full file template.

Actor File

File: Base.SC2Data/GameData/ActorData.xml

All actor entries are children of <Catalog>:

<?xml version="1.0" encoding="utf-8"?>
<Catalog>
    <CActorUnit id="MyUnitActor" parent="GenericUnitStandard" unitName="MyUnit">
        ...
    </CActorUnit>
</Catalog>

---

Actor Types

XML Type	Purpose
CActorUnit	Main visual wrapper for a unit — links model, sounds, animations
CActorModel	A standalone or attached 3D model
CActorAction	Powers a weapon's attack animation sequence
CActorSite	Attachment point / positional anchor
CActorBeam	Laser/beam line between two points
CActorRange	Range indicator circle drawn under a unit
CActorSound	Plays a sound as an actor event
CActorModelMaterial	Modifies material/shader parameters on a model
CActorTerrain	Applies terrain effects (squibs, burn marks)

---

Event System — <On Terms="..." Send="..."/>

Actors are event-driven and reversed: the actor itself declares when it activates, not the thing that triggers it.

<On Terms="EventName.DataId.SubEvent; AnotherTerm; !NegatedTerm" Send="MessageName [Arg1] [Arg2]"/>

Terms syntax

Syntax	Meaning
ActorCreation	Actor has been created
ActorOrphan	Actor's host unit died
UnitBirth.UnitId	Unit of this type was born
UnitDeath.UnitId	Unit of this type died
UnitDeathCustomize	Unit death triggered (more flexible)
WeaponStart.WeaponId.AttackStart	Weapon attack began
WeaponStop.WeaponId.AttackStop	Weapon attack ended
Abil.AbilId.SourcePrepStart	Ability cast started
Abil.AbilId.SourceFinish	Ability finished casting
Abil.AbilId.SourceStop	Ability interrupted
AbilMorph.*.Finish	Any morph ability completed
Upgrade.UpgradeId.Add	Player researched this upgrade
Upgrade.UpgradeId.Remove	Upgrade removed/lost
ValidateUnit UpgradeId	Test if upgrade is researched
IsStatus DeathSuicide 0	Negate: unit did NOT suicide
MorphTo UnitId	Unit morphed into this type
MorphFrom UnitId	Unit morphed away from this type

Semicolons ; are AND — all terms must be true.
! prefix negates a term.
* is a wildcard for a single segment.

---

Common Actor Messages (Send)

Message	Effect
Create	Create this actor (or a referenced actor)
Destroy	Destroy this actor
DestroyFinal	Destroy immediately, no death animation
AnimPlay Attack	Play animation named "Attack" once
AnimBracketStart Attack Attack	Start looping anim: Opening/Content/Closing tokens
AnimBracketStop Attack	Stop the bracketed animation
AnimClear Attack	Clear a running animation
AnimGroupApply Superior	Apply animation group (variation set)
SetTintColor {255 128 0 255}	Tint colour (R G B A 0–255)
SetOpacity 0.5 0	Set opacity (0.0=opaque, 1.0=transparent); 0=no blend
ModelSwap NewModelId	Swap the model at runtime
GlowStart	Start pulsing glow
GlowStop	Stop pulsing glow
HaloStart	Start outline halo
HaloStop	Stop outline halo
HaloSetColor {R G B}	Set halo colour
StatusSet Status 1	Set status flag (e.g. Cloak)
SetWalkAnimMoveSpeed 3	Adjust walk animation playback rate
TerrainSquibActivateGroup MyGroup	Activate a terrain squib group
SendToRef ::Target Create	Tell the target actor to Create

---

CActorUnit — Full Example

<CActorUnit id="MyUnitActor" parent="GenericUnitStandard" unitName="MyUnit">
    <!-- Cross-actor messaging alias (e.g. _UnitMedium for medium-sized units) -->
    <Aliases value="_UnitMedium"/>

    <!-- Reusable event macro (defined elsewhere, expands into multiple On entries) -->
    <Macros value="StandardDeathMacro"/>

    <!-- Primary model -->
    <Model value="MyUnitModel"/>
    <AnimBlendTime value="0.300000"/>

    <!-- Construction model shown while building -->
    <BuildModel value="MyUnitBuildModel"/>

    <!-- Portrait model for unit info panel -->
    <PortraitModel value="MyUnitPortrait"/>

    <!-- Placement ghost model -->
    <PlacementModel value="MyUnitPlacement"/>

    <!-- Death variations -->
    <DeathArray index="Normal" ModelLink="MyDeathModel" SoundLink="MyDeathSound" VoiceLink=""/>
    <DeathArray index="Blast" ModelLink="MyBlastDeathModel"/>

    <!-- Unit sounds -->
    <SoundArray index="Ready" value="MyUnit_Ready"/>
    <SoundArray index="What" value="MyUnit_What"/>
    <SoundArray index="Yes" value="MyUnit_Yes"/>
    <SoundArray index="Attack" value="MyUnit_Attack"/>
    <SoundArray index="Pissed" value="MyUnit_Pissed"/>

    <!-- UI icons -->
    <GroupIcon><Image value="Assets\Textures\wireframe-myunit.dds"/></GroupIcon>
    <UnitIcon value="Assets\Textures\btn-unit-myunit.dds"/>
    <HighlightTooltip value="Unit/Tooltip/MyUnit"/>

    <!-- Health bar positioning -->
    <BarOffset value="25"/>
    <BarWidth value="90"/>

    <!-- Actor events -->
    <On Terms="ActorCreation" Send="AnimPlay Birth"/>
    <On Terms="UnitBirth.MyUnit" Send="Create MyBirthEffectActor"/>
    <On Terms="WeaponStart.MyWeapon.AttackStart" Send="AnimBracketStart Attack Attack"/>
    <On Terms="WeaponStop.MyWeapon.AttackStop" Send="AnimBracketStop Attack"/>
    <On Terms="Abil.MyAbility.SourcePrepStart" Send="AnimPlay Spell"/>
    <On Terms="Upgrade.MyUpgrade.Add" Send="AnimGroupApply Superior"/>
    <On Terms="UnitDeathCustomize; IsStatus DeathSuicide 0" Send="Create MyDeathSound"/>
    <On Terms="ActorOrphan" Send="Destroy"/>
</CActorUnit>

---

CActorAction — Weapon Attack Sequence

Used with the GenericAttack parent. The three tokens are Attack, Launch, and Impact:

<CActorAction id="MyWeaponAction" parent="GenericAttack">
    <!-- Attack: play windup animation on the unit actor -->
    <On Terms="ActionStart" Send="AnimPlay Attack ::Creator"/>

    <!-- Launch: spawn projectile model at weapon launch point -->
    <On Terms="ActionLaunch" Send="Create MyProjectileModel ::Creator"/>

    <!-- Impact: spawn explosion model at target -->
    <On Terms="ActionImpact" Send="Create MyImpactModel ::Target"/>
</CActorAction>

---

Actor Parents Reference

Parent	What it provides
GenericUnitStandard	Default unit actor — selection circle, health bar, standard events
GenericAttack	Weapon action actor — Attack/Launch/Impact event tokens
ModelAddition	Attaches a model to another actor (buff visuals, attachments)
ModelAnimationStyleContinuous	Looping model (persistent AoE like Psi Storm)
ModelAnimationStyleOneShot	One-shot model (explosions, birth effects)
BehaviorGlaze	Applies glaze (overlay) while a behavior is active; uses buff token
SoundOneShot	Plays sound once then auto-destroys
SoundContinuous	Plays sound until destroyed
Range Abil	Range indicator for an ability
Range Behavior	Range indicator for a behavior/aura
Range Weapon	Range indicator for a weapon
Cursor Splat	AoE targeting cursor shown during ability targeting

Warning: When using Range * or Cursor Splat parents via the editor UI, the editor generates default <On events. After creation, Reset To Parent Value on the Events field, or manually delete the generated <On lines in XML view to avoid duplicate/broken event wiring.

---

Aliases

Aliases let other actors address this actor by a shorthand type name:

<Aliases value="_UnitMedium"/>

Common system aliases used in Terms:

• ::Creator — the actor that created this actor
• ::Host — the unit this actor is attached to
• ::Target — the target of an action
• ::Main — the main actor of the host unit
• _Unit — any unit actor (generic)
• _Structure — any structure actor
• _UnitSmall / _UnitMedium / _UnitLarge — by size class

---

Macros

Macros expand into a set of <On> entries at runtime. Defined in a CActorMacro entry, referenced by name:

<Macros value="ZergBurrowStandardAnimMacro"/>

Blizzard provides many reusable macros for common patterns (burrow/unburrow, death, cloak, etc.). Check existing units of the same race/type for applicable macros before writing manual <On> events.

---

CActorModel — Standalone or Attached Model

<!-- Birth VFX: one-shot model, auto-destroys after animation plays -->
<CActorModel id="MyBirthEffectActor" parent="ModelAnimationStyleOneShot">
    <Model value="MyBirthModel"/>
    <On Terms="ActorCreation" Send="AnimPlay Birth"/>
    <On Terms="AnimDone" Send="Destroy"/>
</CActorModel>

<!-- Persistent looping area model -->
<CActorModel id="MyAuraModel" parent="ModelAnimationStyleContinuous">
    <Model value="MyAuraModel"/>
</CActorModel>

---

CActorSound

<CActorSound id="MyReadySound" parent="SoundOneShot">
    <Sound value="MyUnit_Ready"/>
    <On Terms="ActorCreation" Send="AnimPlay"/>
    <On Terms="ActorOrphan" Send="Destroy"/>
</CActorSound>

---

CActorBeam — Laser Beam

<CActorBeam id="MyLaserBeam">
    <Model value="MyBeamModel"/>
    <!-- Beam connects ::Creator (source) to ::Target -->
</CActorBeam>

---

Advanced Event Patterns

Timer Pattern — per-actor delays and loops

A timer lives entirely on the actor. Set it on creation and respond to its expiry:

<!-- Start a 3-second timer (with up to 1 second random variance) on creation -->
<On Terms="ActorCreation" Send="TimerSet MyTimer 3 1"/>

<!-- Respond when that timer fires, identified by the TimerName term -->
<On Terms="TimerExpired; TimerName MyTimer" Send="AnimPlay Attack"/>

TimerSet <Name> <BaseDuration> <RandomRange> — adds a random 0–RandomRange seconds on top. Use TimerStop MyTimer to cancel before expiry.

Signal Pattern — cross-actor events

Signals send an artificial event from one actor to another via a reference alias:

<!-- From a buff actor: tell the host unit actor to play a flash -->
<On Terms="ActorCreation" Send="Signal AbilityFlash ::Host"/>

<!-- In the main unit CActorUnit: listen for that signal -->
<On Terms="Signal AbilityFlash" Send="AnimPlay Flash"/>

Signals bypass the normal game event system and go directly from sender to receiver.

Status Set — actor state machine

Use StatusSet + IsStatus to track internal actor state without needing external data:

<!-- Track burrow state -->
<On Terms="Abil.BurrowDown.SourceFinish" Send="StatusSet Burrowed 1"/>
<On Terms="Abil.BurrowUp.SourceFinish"   Send="StatusSet Burrowed 0"/>

<!-- Conditionally act only when burrowed -->
<On Terms="WeaponStart.MyWeapon.AttackStart; IsStatus Burrowed 1" Send="AnimPlay BurrowedAttack"/>

Cap — limit event to fire N times per actor lifetime

The Cap N term prevents an event from triggering more than N times over the actor's life:

<!-- Play birth anim only once even if creation somehow fires again -->
<On Terms="ActorCreation; Cap 1" Send="AnimPlay Birth"/>

From Effect Tree Descendant — isolate per-effect-instance actors

When multiple instances of the same effect run simultaneously (e.g. multiple persistent effects), use FromEffectTreeDescendant to restrict each actor's response to its own effect tree only:

<On Terms="Effect.TentacleHit; FromEffectTreeDescendant TentacleEffect" Send="AnimPlay Hit"/>

Without this term, every active instance of that actor type would respond to every matching event.

Upgrade Event — Affected Unit Array requirement

The Upgrade.UpgradeId.Add actor event only fires if the unit type is in the upgrade's Affected Unit Array in the Data Editor. If the event never fires in playtesting, add the unit to that array:

<CUpgrade id="MyUpgrade">
    <AffectedUnitArray value="MyUnit"/>   <!-- required for Upgrade actor event to fire on MyUnit -->
</CUpgrade>

Ability Charge/Cooldown Actor Events

Charge and cooldown actor events only fire if the corresponding flags are set on the ability:

Ability flag (Shared Flags)	Enables actor events
Register Charge Event	Abil.MyAbility.ChargeStart, .ChargeUse, .ChargeExpire
Register Cooldown Event	Abil.MyAbility.CooldownStart, .CooldownExpire

---

Best Practices

• Actors do not affect gameplay — never use actors to track game state.
• Prefer macros over manual <On> events when the unit race/type has matching macros.
• Keep actor ids consistent with unit ids: unit MyUnit → actor MyUnitActor.
• Use parent="ModelAnimationStyleOneShot" for all one-time VFX (explosions, birth effects).
• Always add <On Terms="ActorOrphan" Send="Destroy"/> to orphan non-unit actors that should clean up.
• Test animations in the editor with the Actor Viewer (F7 in the editor).