INDEXIN / ENGINE LABS

IX-108 · Evidence · INTERACTIVE LAW STUDY

Fixed-step replay

Change the display rate. Keep the tick. Change a variable, run the law, and inspect the result.

LAW / CONSTRAINTclock.advance(frame time) → fixed 1/120 s steps
Change the display rate. Keep the tick.Loading the pinned engine…

WHY THIS RESULT?

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WHAT THIS DEMONSTRATES

Scope and evidence

Replays compare equal completed simulation ticks. The source clamps frame deltas to 50 ms and caps catch-up work. Fixed stepping alone is not a cross-platform floating-point lockstep guarantee.

Source: engine:crates/wgame/src/clock.rs

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