Ivx Qv Animation

When to Use

"animation", "animate", "DOTween", "tween", "transition", "fade", "slide", "bounce", "motion"

Animation Stack in QuizVerse

DOTween (via Doozy) → Primary animation engine (92+ scripts)
Coroutines         → Sequencing, delays, multi-step flows
schedule.Execute() → UI Toolkit only (OnboardingManagerV2)

No Animator controllers or Timeline in this project

DOTween Patterns

// Fade in
canvasGroup.DOFade(1f, 0.3f).SetEase(Ease.OutQuad);

// Slide from bottom
transform.DOLocalMoveY(0f, 0.4f).SetEase(Ease.OutBack);

// Scale bounce
transform.DOScale(1f, 0.3f).From(0.5f).SetEase(Ease.OutElastic);

// Sequence
var seq = DOTween.Sequence();
seq.Append(canvasGroup.DOFade(1f, 0.3f));
seq.Append(transform.DOLocalMoveY(0f, 0.4f));
seq.Play();

Critical Rules

1. Kill tweens on disable: DOTween.Kill(transform) or _tween?.Kill()
2. Cache sequences — never allocate in Update
3. SetUpdate(true) for timeScale-independent UI animations
4. Use .SetLink(gameObject) to auto-kill on destroy
5. Doozy is read-only (Assets/Doozy/ — NEVER modify)

Coroutine Sequencing (when DOTween is unavailable)

private IEnumerator AnimateSequence() {
    yield return FadeIn(canvasGroup, 0.3f);
    yield return new WaitForSeconds(0.2f);
    yield return SlideUp(transform, 0.4f);
}

// Always stop on disable:
private Coroutine _activeSequence;
void OnDisable() {
    if (_activeSequence != null) StopCoroutine(_activeSequence);
}

Common Presets (from UIAnimationPresets.cs)

Memory Safety

• ❌ Never: DOTween.Sequence() without killing on disable
• ❌ Never: StartCoroutine() in OnEnable without stopping in OnDisable
• ✅ Always: _tween?.Kill(); _tween = null; in OnDisable
• ✅ Always: Cache WaitForSeconds objects: private static readonly WaitForSeconds _wait = new(0.3f);

Context Files (load only if needed)

• Presets: Scripts/UI/Core/UIAnimationPresets.cs
• Flow controller: Scripts/UI/Core/UIFlowController.cs