RPG Mob Leveling System

Supported platforms: Minecraft 1.20.1 (Fabric, Forge) · Minecraft 1.21.1 (Fabric, NeoForge)

New features

• Unified leveling architecture — mob levels are calculated once on spawn through LevelCalculationService, with attribute scaling, classification, and storage handled by dedicated services.
• RPG Attribute System integration — optional player-based scaling (nearest, highest_nearby, average_nearby) and combat rebalance when rpg_attribute_system 4.1+ is installed.
• Public API (RmlApi) — other mods can read mob levels, force recalculation, and inspect level breakdowns.
• Debug commands — /rml inspect, /rml recalculate, /rml config, /rml distance (op level 2).
• Percentage attribute scaling — per-rule additive or percent modes in attributes_settings.json.
• Gson JSON config — all settings live under config/rpgmoblevelingsystem/ (replaces Jauml on 1.20.1).
• Namespace bans — exclude entire mods (e.g. cobblemon) via banned_namespaces.
• Hostile-only scaling — optional global or per-rule hostile filter.
• Structure & boss level locks — structureMinLevels and bossLevelLocks in config.
• Custom loot by level — optional loot_by_level.json for level-band drops.
• Configurable name format — %mob_name% [Lv. %level%] in global_settings.json.
• Ascendant elites — ported to common code on all loaders (buffs, boss bar, death loot).
• Documentation — usage guide, API reference, and community feedback resolution report in docs/.

Bug fixes

• Distance scaling — now uses Euclidean block distance divided by scaleDistance (was incorrectly using squared distance).
• Day scaling — uses total elapsed world time (gameTime / 24000) instead of wrap-sensitive day time alone.
• Movement speed corruption — attributes applied via idempotent named modifiers instead of mutating base values; speed skipped for non-hostiles by default.
• Locked mob HP — locked/boss mobs no longer keep incorrect stacked HP forever.
• Zero XP in modded dimensions — XP scaling works on Fabric (mixin) and NeoForge/Forge (event).
• Ender Dragon / boss scaling — dedicated boss lock defaults and locked-level path.
• Overlay console spam — removed periodic debug logging; optional overlayDebug flag.
• Jade / name display — overlay no longer overwrites mob custom names with Lv.N.
• Performance — levels applied once on spawn, never every tick; early exit for banned namespaces.
• Low-level mobs vs high RAS players — optional playerBalanceEnabled scales mob power relative to nearby player combat snapshot.

Config changes

New / updated files in config/rpgmoblevelingsystem/:

File	What's new
scale_settings.json	rounding_mode, playerScaleMode, playerScaleRadius, playerScaleFactor, balance ratios
attributes_settings.json	mode (additive / percent), hostileOnly per rule
mobs_list_settings.json	banned_namespaces, hostileOnly, bossLevelLocks, structureMinLevels
global_settings.json	nameFormat, jadeEnabled, overlayDebug
loot_by_level.json	Level-band custom drops (disabled by default)

Legacy configs with scaleDistance >= 100000 and near-zero progression auto-migrate on first launch.

Breaking changes

• Config format — JSON only in 2.0; Jauml string configs on 1.20.1 are no longer read.
• Attribute application — uses Minecraft attribute modifiers instead of permanent setBaseValue mutations. Existing worlds keep stored level tags; use /rml recalculate to refresh mobs if needed.

For mod developers

import tn.nightbeam.rpgmoblevelingsystem.api.RmlApi;

int level = RmlApi.getLevel(entity);
RmlApi.recalculate(entity);
LevelDebugBreakdown breakdown = RmlApi.getDebugBreakdown(entity);

See docs/API.md for full reference.