Slimefun Legacy 4.1.41 — Maintenance & Compatibility

Slimefun Legacy 4.1.41 builds on the stable 4.1.40 release with targeted performance improvements, Paper 26.2 compatibility updates, machine optimizations, and additional runtime validation.

⚡ Performance & Stability

• Optimized Enhanced Auto Crafter recipe matching and inventory processing.
• Reduced repeated inventory snapshots and recipe predicate work during machine ticks.
• Reduced Electric Smeltery idle ticker overhead.
• Improved EnergyNet lookups and Energy Regulator processing.
• Added faster network lookup by regulator location instead of repeatedly scanning registered networks.
• Staggered Energy Regulator validation work to reduce periodic tick spikes.
• Optimized Resonance Beacon player-effect processing on Paper-family servers.
• Removed unnecessary storage lookups from Auto Crafter processing.
• Fixed incorrect negative-Y coordinates reported by /sf tick top.

Performance changes were validated using live server profiling, with regressions rejected and rolled back rather than included in the release.

🔮 Resonance Beacon Improvements

• Normal right-click now reliably opens the Resonance Beacon menu.
• Sneak + right-click continues to toggle the yellow beam visualization.
• Off-hand interactions are handled correctly so vanilla Beacon behavior cannot override the Slimefun interface.
• Resonance Beacons must now be placed more than three chunks apart in the same world.
• Placement validation occurs before Slimefun block data is created.
• Existing activator, upgrade, effect, and Gravity Well behavior remains intact.
• Added automated CI tests for Beacon interaction and placement spacing.

🛠 Paper 26.2 Compatibility

Updated Vanilla Auto Crafter recipe handling for changes introduced in Paper 26.2 build #120, including support for the newer RecipeChoice.PredicateChoice recipe implementation.

Recipe previews, shaped recipe handling, and ingredient matching remain compatible without assuming every recipe choice is a standard MaterialChoice.

The final build was successfully boot-tested against Paper 26.2 build #120 with Java 25.

🧪 Expanded Platform Testing

Slimefun Legacy 4.1.41 is tested against:

• Paper 26.2 — Primary platform
• Purpur 26.2 — Supported
• Leaf 26.2 — Runtime tested
• Folia 26.2 — Experimental support
• Paper/Purpur 1.21.11 — Legacy compatibility tested
• Java 21+
• Java 25 build and runtime validated

Leaf has also been added to the regular Paper-family runtime testing matrix.

🔔 Update Notifications

Added the new permission:

slimefun.update-notifications

This defaults to OP and allows permitted administrators to receive notifications when a newer Slimefun Legacy GitHub release is available.

🧩 Compatibility

4.1.41 remains a maintenance-focused release.

Existing:

• Slimefun item IDs
• recipes
• world data
• machine storage
• addon-facing APIs and behavior
• established gameplay mechanics

are intentionally preserved.

No world migration or broad gameplay rewrite is required when upgrading from 4.1.40.

Recommended Update

4.1.41 is recommended for servers running Slimefun Legacy 4.1.x, particularly servers using Paper 26.2 or running larger Slimefun machine networks.

This release focuses on keeping Slimefun fast, stable, addon-compatible, and maintainable on modern Minecraft server software.