sipherxyz/ue-anim-notify-patterns
skills/ue-anim-notify-patterns/SKILL.md
Animation notify and montage tool patterns for UE5
tools
Updated Apr 20, 2026
$ install --global
skillsauthnpx skillsauth add sipherxyz/universal-ue-skills ue-anim-notify-patternsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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Last scanned: Apr 20, 2026, 9:18 AM5.9s1 file scanned
SKILL.md
- name:
- ue-anim-notify-patterns
- description:
- Animation notify and montage tool patterns for UE5
UE5 AnimNotify & Montage Tool Patterns
Role: Animation Tool Engineer Scope: Creating/modifying FAnimNotifyEvent in editor tools Engine: UE 5.5+
Critical Pattern: FAnimNotifyEvent Creation
When programmatically creating FAnimNotifyEvent entries for montages, you MUST follow the engine's expected initialization pattern. Missing any step causes editor bugs (selection issues, visual glitches, notify state backgrounds not rendering).
Required Steps
#include "Animation/AnimTypes.h" // For GetTriggerTimeOffsetForType()
FAnimNotifyEvent NewEvent;
// 1. CRITICAL: Unique GUID for selection handling
NewEvent.Guid = FGuid::NewGuid();
// 2. Set the notify object (choose ONE)
// For instant notifies:
NewEvent.Notify = NewObject<UAnimNotify>(Montage, NotifyClass, NAME_None, RF_Transactional);
// OR for notify states:
NewEvent.NotifyStateClass = NewObject<UAnimNotifyState>(Montage, NotifyStateClass, NAME_None, RF_Transactional);
NewEvent.SetDuration(Duration);
// 3. Link to montage timeline
NewEvent.Link(Montage, StartTime);
NewEvent.TriggerTimeOffset = GetTriggerTimeOffsetForType(Montage->CalculateOffsetForNotify(StartTime));
NewEvent.TrackIndex = TrackIndex;
// 4. FOR NOTIFY STATES ONLY: Link the end time
if (NewEvent.NotifyStateClass)
{
float EndTime = StartTime + Duration;
NewEvent.EndLink.Link(Montage, EndTime);
NewEvent.EndTriggerTimeOffset = GetTriggerTimeOffsetForType(Montage->CalculateOffsetForNotify(EndTime));
}
// 5. Add to montage
Montage->Notifies.Add(NewEvent);
// 6. Refresh after all notifies added
Montage->RefreshCacheData();
What Breaks Without Each Step
| Missing Step | Bug |
|--------------|-----|
| Guid = FGuid::NewGuid() | All notifies select together, positions jump when moving one |
| EndLink.Link() | NotifyState duration handle doesn't work, can't resize |
| EndTriggerTimeOffset | End time snapping broken |
| NotifyStateClass with base UAnimNotifyState | No background color renders (need concrete subclass) |
NotifyState Visual Rendering
Base UAnimNotifyState has no visual representation. For editor-visible notify states, create a concrete subclass:
UCLASS()
class UAnimNotifyState_MyCustom : public UAnimNotifyState
{
GENERATED_BODY()
public:
UAnimNotifyState_MyCustom()
{
#if WITH_EDITORONLY_DATA
NotifyColor = FColor(255, 216, 0, 255); // Yellow
#endif
}
virtual FLinearColor GetEditorColor() override
{
return FLinearColor(1.0f, 0.85f, 0.0f, 1.0f);
}
};
Engine Reference
See Engine/Source/Editor/Persona/Private/SAnimNotifyPanel.cpp lines 2510-2579 for the canonical implementation.
Common Mistakes
- Not setting unique GUIDs - Causes multi-selection bugs
- Using base UAnimNotifyState - No background color in timeline
- Forgetting EndLink for states - Duration handles don't work
- Missing RefreshCacheData() - Notifies don't appear until save/reload
- Wrong object outer - Use
Montageas outer for notify objects
Legacy Metadata
skill: ue-anim-notify-patterns
invoke: /editor-tools:ue-anim-notify-patterns
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