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fix(viewer): clamp GLB floor animation on slow frames #820

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fix(viewer): clamp GLB floor animation on slow frames #820

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4 changes: 3 additions & 1 deletion packages/viewer/src/components/viewer/glb-scene.tsx
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Original file line number Diff line number Diff line change
Expand Up @@ -599,7 +599,9 @@ export function GlbScene({
const targetY = baseY + (exploded ? index * EXPLODED_GAP : 0)
// Snap (not lerp) in walkthrough so the first-person collider, built from
// these world positions, matches the stacked building immediately.
node.position.y = walkthroughMode ? targetY : lerp(node.position.y, targetY, delta * 12)
node.position.y = walkthroughMode
? targetY
: lerp(node.position.y, targetY, Math.min(1, delta * 12))
// Solo: hidden levels above the soloed one keep casting shadows
// (shadow-caster-only); below-levels can't block the sun, so plain-hide.
const hidden =
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