Reproduce the v2 .NET seeded ore coordinates exactly #56

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opened 2026-08-06 03:57:44 +00:00 by coilyco-ops · 0 comments

coilyco-ops commented

2026-08-06 03:57:44 +00:00

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Problem

The Rust v2 world preserves the historical seed, counts, bounds, exclusion radius, and collision rules, but it uses a stable Rust-local random generator. It does not reproduce the exact coordinate stream generated by the historical .NET implementation.

This compatibility slice is tracked by #49 but can proceed in parallel with the performance and expansion chain.

Scope

Recover the exact C# random calls, bounds semantics, retry order, and insertion order from git history.
Implement the minimum compatible .NET random stream or check in a source-derived coordinate fixture.
Preserve the 141 iron, 141 copper, 141 coal, and one manifest stone startup contract.
Preserve central-radius exclusion, collision rejection, resource ordering, and stable object identities.
Document whether compatibility is algorithmic or fixture-based.

Acceptance

Seed 4382721 produces the exact historical ordered resource coordinates and kinds.
A compact fixed fixture or digest detects any coordinate, ordering, retry, or resource-kind drift.
All 424 source positions remain unique and valid on the 100x100 grid.
CLI and viewer use the exact compatible layout.
Other seeds retain explicitly documented deterministic behavior.
Parity documentation removes the .NET random-stream caveat only after the proof passes.
The full Ward gate and release Wasm build pass.

## Problem The Rust v2 world preserves the historical seed, counts, bounds, exclusion radius, and collision rules, but it uses a stable Rust-local random generator. It does not reproduce the exact coordinate stream generated by the historical .NET implementation. This compatibility slice is tracked by #49 but can proceed in parallel with the performance and expansion chain. ## Scope * Recover the exact C# random calls, bounds semantics, retry order, and insertion order from git history. * Implement the minimum compatible .NET random stream or check in a source-derived coordinate fixture. * Preserve the 141 iron, 141 copper, 141 coal, and one manifest stone startup contract. * Preserve central-radius exclusion, collision rejection, resource ordering, and stable object identities. * Document whether compatibility is algorithmic or fixture-based. ## Acceptance * Seed 4382721 produces the exact historical ordered resource coordinates and kinds. * A compact fixed fixture or digest detects any coordinate, ordering, retry, or resource-kind drift. * All 424 source positions remain unique and valid on the 100x100 grid. * CLI and viewer use the exact compatible layout. * Other seeds retain explicitly documented deterministic behavior. * Parity documentation removes the .NET random-stream caveat only after the proof passes. * The full Ward gate and release Wasm build pass.

coilyco-ops referenced this issue

2026-08-06 03:58:01 +00:00

Track remaining v2 large-world parity #49

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2026-08-06 03:58:01 +00:00