#determinism

When the world is deterministically generated from a spec, a save is {version, spec, edits[]} — never a geometry snapshot. Load = validate → regenerate → replay edits. Same format works for save, co-op edit sync, and late-join replay.

Two proven architectures on top of the engine networking primitives: replicate the generator spec (not the geometry) for deterministic worlds, and retrofit local-only gameplay systems to host-authority without breaking single-player.

bpy.ops.wm.obj_export can reorder face lines across runs on the same mesh — diff the manifest, not the raw OBJ bytes.