Deterministic simulation and state modeling

Repeatable outcome

A simulation whose state is somewhere specific, advances for a stated reason, and can be reloaded after the code that produced it has changed.

Three separations do the work. Authoritative state is held apart from anything that draws it, so the display can be rebuilt without touching the world. Time advances through explicit transitions rather than as a side effect of rendering, which is what makes a run reproducible from the same inputs. And saved state is versioned with a migration path, so an old world is readable by new code instead of being abandoned.

Determinism is what makes the behaviour testable at all: a simulation that cannot be replayed can only be observed, never checked.

Scope and boundaries

Marked emerging. One published system demonstrates this, and one instance is a demonstrated approach rather than a repeated one.

The evidence system is a non-commercial fan project referencing third-party intellectual property. It is not sold, not licensed as a product, and not affiliated with any rights holder; its repository holds mixed rights and use terms require inspection.

This does not imply:

• Game development as a service, or any engagement to build one.
• Physical, engineering, or scientific simulation. The state model here is a game world. It is not a physical model and carries no claim of physical fidelity.
• Performance characteristics. No frame rate, scale, or throughput figure is claimed.