Box Stack Stability
Stable stack under repeated runs with consistent contact resolution.
CoreBuyer-critical
CoreBuyer-critical
engine captureadaptive proof playback · event-aware · no synthetic interpolationpublic proof
Box Stack Stability
stable resting contact
64 bodies~0.28 ms refmatch
What you are seeing
Scene
A layered box stack staged on a readable slab so resting contact, grounding, and solver damping stay visually obvious instead of floaty.
Why it matters
Verify stable resting contact, stacking behavior, and absence of explosive jitter under repeated stepping.
Pass condition
The stack should settle onto the visible slab without runaway energy gain or a falling-through-floor read.
Proof views
Use Public proof for the clean buyer-facing read, Event focus for adaptive slowdowns around the key moment, and Debug proof for contact cues, overlays, frame numbers, and proof-lane instrumentation.
Metrics strip
ref step time~0.28 ms ref
body count64 bodies
constraint count192 constraints
dt1/60 s
iterations24 solver iters
proof statusmatch
platformWindows x64 / MSVC
benchmark notebaseline-aware
Technical drawer
Command / source path
build\bin\examples\collision_demo.exe
Systems exercised
- rigid body dynamics
- contact manifold handling
- PGS solver
- sleep / settle behavior
Known limitations
- This scene is a core sanity check, not a full stress benchmark.
- Cross-platform bit-exact identity is not implied by this page alone.
Recommended context
Use this first when a buyer wants a quick visual confidence check in under a minute.
Determinism status
- same build: expected within configured deterministic mode
- cross-run: hash-matched in repeated-run proof lane
- cross-platform: validate per target platform
- snapshot / restore: not the primary claim of this scene