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Memento - Natural Renewal

Memento - Natural Renewal

Gradual, runtime world renewal for long-lived Minecraft worlds - renew unused terrain naturally while inhabited areas stay protected.

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413downloads
2followers

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Licensed MIT
Published 9 months ago
Updated 7 months ago
All versions

0.9.11-SNAPSHOT

Beta
Natural Renewal Is Now Active (Backup Recommended)8 months ago 20
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Compatibility

Minecraft: Java Edition
1.21.10
Platform
Fabric
Supported environments
Server-side
Singleplayer

Changes

Description

Natural Renewal is now live.

With this release, /memento renew force performs actual world renewal. This is the first version where Memento modifies region data directly.

What This Means

Memento now supports two renewal paths:

🌍 Region-Based Pruning (Primary Path)

If a full region is conservatively determined to be forgettable, Memento will:

  • Remove the region file
  • Remove the matching entity file
  • Remove the matching POI file

When players later revisit that area, Minecraft regenerates it naturally using current world generation.

This is ideal for remote, long-abandoned terrain.

🧱 Chunk-Based Renewal (Fallback)

If a region is not fully eligible, eligible chunks are scheduled through the existing renewal engine.

This is useful near inhabited areas where selective renewal is required.

How It Works

  • Renewal eligibility is evaluated at command time from a stable projection snapshot.
  • Evaluation is region-first, with chunk fallback only when needed.
  • Spatial checks are bounded and region-aware (no world-wide scans).
  • File operations are staged and guarded to reduce risk.
  • Only one pruning operation runs at a time.

The system is conservative by design: unknown or active evidence blocks region-level pruning.

⚠️ Important — Back Up Your World

This version performs real file removal.

Safeguards are in place, but this is the first active implementation of Natural Renewal.

Back up your world before testing.

Performance Improvements

Projection analysis is now significantly faster due to bounded spatial evaluation. Large worlds benefit the most from this change.

Temporary Operator Message

An operator-facing message tracking eligibility recomputation is intentionally enabled in this release to aid testing. It will be removed in a follow-up version.

How to Test

Recommended test approach:

  1. Back up your world.
  2. Run /memento renew to review eligibility.
  3. Run /memento renew force in remote areas first.
  4. Revisit pruned regions to confirm natural regeneration.
  5. Observe behavior near inhabited areas.

Test across different dimensions if possible.

Reporting Issues

If you encounter problems:

  • Provide logs (latest.log or debug.log)
  • Mention world size and dimension
  • Describe command sequence used
  • State whether region or chunk renewal was selected

Please report issues on GitHub: 👉 https://github.com/olilanz/memento/issues

This release marks the transition from analysis-only to true, automatic world evolution.