Random Optimization

Description

This mod implements the following features to significantly optimize game performance and fix existing bugs. All features can be toggled via the configuration file.

• Fixes MC-249136(1.20.1) / Improve structure location performace(1.21.1): This bug causes severe server lag (hangs) when players attempt to locate Buried Treasure (most notably), or when opening/breaking chests containing maps, or using the /locate command. This mod employs simple checks to drastically reduce the enumeration required during structure searching, thereby optimizing speed.
• (Default Disabled in v1.6+)Deterministic Item Drops: The mod de-randomizes the spawn position of dropped items. This makes designing Redstone contraptions much simpler and easier.
• Optimized Resource/Data Pack Loading: Improves the loading speed of Resource Packs and Data Packs. The mod Builds a compact index for compressed Resource Packs and Data Packs on first access, replacing repeated full-ZIP scans during namespace discovery and recursive resource listing. This reduces reload time and temporary allocations, especially for large packs and modpacks containing many assets.
• Boat Fall Damage Fix: Fixes an issue where boats take fall damage when falling from specific heights. This aligns behavior with the MC-Wiki description and newer Minecraft versions, while also improving performance.
• DFU Optimization: Defers (lazy loads) the DataFixerUpper (DFU) to improve game startup speed.

Compatibility & Replacements

This mod completely or partially replaces the functionality of the following mods:

• MC-249136 Fix: This mod fundamentally optimizes the structure search algorithm. In contrast, other mods often move the task to a separate thread to mask the lag. While technically not conflicting, using this mod usually provides sufficient optimization, making the other mod unnecessary. If you strictly require asynchronous loading, Async Locator is recommended instead, as it supports more structures and has a better implementation.
• Shipwreck/Buried Treasure Fixes: This mod shares the same essential optimization logic for MC-249136. There is no need to use those mods if this one is installed.
• Vertical Fall: This mod completely replaces all functionality of this mod.
• Drizzleproof: Partially replaced. If you only need deterministic item drops, you do not need Drizzleproof. However, if you require granular configuration for entity mechanics, please continue using Drizzleproof.
• Quick Pack: When this mod's compressed-pack index is enabled, Quick Pack's replacement resource-pack implementation is automatically suppressed and this mod's faster index is used instead.
• ModernFix: When this mod's compressed-pack index is enabled, ModernFix's overlapping ZIP resource-pack index is automatically suppressed. Other ModernFix resource-pack optimizations and all unrelated features remain enabled.
• Boat Break Fix: This mod completely replaces the functionality of this mod.
• DFU Loading Optimizations (e.g., LazyDFU): This mod completely replaces the functionality of these mods.

Compatibility & License

This mod has good compatibility with other mods and has no known incompatibilities. It is open-source under the LGPL-3.0 license.

Credits

• The MC-249136 by bytzo, which inspired me to speed up the structure locate.