# RPG Damage Overhaul 2.0.0 Covers everything between the April 29, 2026 build (1.2.2-forge, Minecraft 1.20.1) and the 2.0.0 rewrite. The 2.0.0 branch is a mid-flight rewrite, so wired-up changes and unfinished work are listed separately. ## Platform - Ported to Minecraft 1.21.1. - Rebuilt as a multi-loader mod. There is now a shared `common` module plus separate `neoforge` (NeoForge 21.1.x) and `fabric` (loader 0.16.9) builds. The old single Forge project layout is gone, replaced by `buildSrc` and per-loader subprojects sharing one `gradle.properties`. Please note that the fabric build is not yet working. - The Forge 1.20.1 line (1.2.2) stays as its own branch. 2.0.0 targets NeoForge and Fabric on 1.21.1. ## New damage classes - **Water.** A child of frost. Marks the target wet on hit, hits harder in water or rain (x1.5), and briefly raises the frost and lightning damage the target takes afterward. Pulls from water spell power attributes (Aces' Spell Utils hydro, Spell Power water). It only inherits part of frost's defenses (parent defense effectiveness 1.75, parent damage defense effectiveness 0.5). - **Lava.** A child of elemental. Ignites on hit, stacks up to 4 times over 3 seconds, and is weaker in water (x0.75). Shares damage scaling with fire. - **Fire** is now defined as a child of lava. It ignites for a shorter time, stacks up to 3, and is much weaker in water (x0.5). - English and Portuguese names added for both water and lava (damage, resistance, absorption, armor). ## Damage class definitions - Each class is now its own file under `data/rpgdamageoverhaul/rpgdamageoverhaul/damage_class/<name>.json`. A datapack can add or replace one class without redefining all of them. (The old combined `damage_classes.json` still loads for now.) - The old nested `subClasses` structure is replaced by a `parent` field. A class names its parent and inherits behavior up the chain. The tree is `physical > {sharp > {slashing, piercing}, blunt}` and `elemental > {fire > lava, frost > water, poison, holy, soul, wither, blood, lightning}`, plus `arcane` and `true`. - New `parent_defense_effectiveness` and `parent_damage_defense_effectiveness` fields control how much of a parent class's resistance and armor carry down to a child. - Class behavior is now a registrable property system. Other mods can register their own class properties and on-hit effects through `RPGDamageOverhaulAPI.registerPropertyBuilder` and `registerPropertyAlias`. - All field names moved to snake_case (`on_water`, `armor_effectiveness`, `damage_types`, `attribute_modifier`, and so on). ## Behavior changes - Fire and frost use plain `ignite` and `freeze` duration numbers instead of on-hit effect lists. - New `modify_damage` property. A time-limited multiplier on the target's outgoing damage, with either an exception list or a whitelist. Holy uses it (+5% per point of damage, at least +50%, for 2 seconds, not stacking with holy). Water uses it to boost follow-up frost and lightning. - New `modify_heal` property. Cuts healing the target receives for a short time based on the hit. Poison uses this instead of the old anti-heal block. - New `set_wet` property. Marks the target wet for a duration. Used by water. - New `rename_attributes` property. Lets a class treat another mod's attribute as one of its own slots (damage, armor, absorption, resistance). This is how Iron's Spellbooks magic resist and spell power attributes fold into the matching classes. - Chain lightning is now the generic `chain_damage` property with `range`, `max_targets`, and `damage_modifier`, and the modifier accepts a formula using `dmg` and `n` (target number). - `apply_potion` now takes explicit `duration` and `amplifier`, and the amplifier can be a formula. Poison reaches level 2 at 4 or more damage. - `attribute_modifier` is now a list and uses the 1.21 operation names. Frost's slow was retuned (attack speed down 8% per damage, capped at 60%; movement down 4.5% per damage). Wither now shreds armor and armor toughness on hit instead of blocking healing. - Soul keeps its max-health shred and gains a damage enchantment hook (Luminous Nether soul cleave). - The standalone `physical.json` sets the vanilla Resistance effect to cut physical damage by 20% per level (was 5%). - The formula evaluator now exposes more variables to class JSON (`armor` for armor effectiveness, `heal` for heal modifiers, `n` for chain targets). ## Rebalanced damage and resistance overrides - Water, drowning, and aquatic mob attacks moved off frost onto the new water class. `minecraft:drown` is now water. Drowned, Cataclysm deeplings, leviathan and Scylla, Alex's Caves deep ones and hullbreaker, Aquamirae fish, Ice and Fire sea serpents and sirens, Sea Dwellers mermorphs, and many others now resist water instead of frost, and several of those values went up. - Lava, magma, and volcanic attacks moved off fire onto lava: `minecraft:lava`, Create fan lava, Cataclysm Ignis and flame strike, Alex's Caves nuke, tephra and Luxtructosaurus, Souls Weapons flame pillar, Fryc lava slime, Mowzie's solar beam and sunstrike, and more. - Added a `neoforge:poison` mapping to the poison class. - Cataclysm pass: Scylla now also deals water damage, `lightning_spear` and `lightning_storm` map to lightning, the Ignis abyss fireball is lava plus water, and coral golem and deepling resistances were retuned. - Small tuning to Frostmaw, Hydra, and a few others. ## Compatibility - **Iron's Spellbooks** (new optional dependency). Fire, frost, lightning, blood, holy, ender, eldritch, and nature spell power and magic resist attributes are mapped into the matching RPGDO classes, and spell power copies into class damage. - **Spell Power and Aces' Spell Utils.** Fire, frost, water, arcane, holy, and soul spell power attributes feed the matching classes. - **Rotten Creatures** (new). Resistances for burned, frostbitten, swampy, mummy, glacial hunter, scarab, dead beard, the zombie and skeleton lackeys, and immortal (which takes extra holy damage). Magma and frozen rotten flesh give fire or frost resistance when eaten, if Food Attributes is present. - **Food Attributes** (new, first pass). A curated food to class mapping in `attributesetter/item_type/foodattributescompat.json`: strider slice and minced strider give fire armor and resistance, bullet pepper and pepper powder give fire damage, chili and buffalo wings give fire damage, gumbo gives fire armor and keeps its blast resistance, magma cream gives lava resistance, strider egg gives lava armor, melon gives piercing resistance, chorus fruit gives arcane armor, several fish give water resistance, pufferfish gives poison resistance, ghasta gives soul resistance, and beetroot gives blood damage. The full design is in `docs/design/foodattributes-compat.md`. - Better Combat, Simply Swords, Simplymore, Jade, and Curios compat carried forward to 1.21.1. ## Networking - New payload-based sync for 1.21.1: `RPGDODatapackSyncPayload`, `DamageClassSyncStartPayload`, `DamageClassAddConfigPayload`, `DamageClassSyncFinishedPayload`. Damage class configuration streams to clients on join and on reload. - On NeoForge the sync runs before Forge's own registry sync to avoid an ordering crash. ## Other - Attribute modifier data dropped the old UUID fields to match 1.21's ResourceLocation-based modifiers. - New `AttributeUtils` helper that resolves an attribute value through all modifier operations, used by the class damage and resistance math. ## Not finished in this build - Better Mob Combat, Apotheosis, Dungeons and Combat, and some Simply Swords ability compat from 1.20.1 is not ported yet. - Legacy `damage_classes.json`, `damage_overrides.json`, `entity_overrides.json`, `item_overrides.json`, and `bettercombat.json` still ship alongside the new per-class files, this is because if I screw something up I want to be able to look at the old files.

- Fixed wither roses and some mobs having no IFrames - Fixed crit damage not working for item overrides - Fixed incompatibility with some mods that might change attack damage dynamically - Fixed Born In Chaos nightmare stalker and spider mother not having the correct resistances

- Added death chat messages - Fixed stuff with player damage and player attributes

Fixed a crash

- Fixed custom damage types not critting properly - Fixed crashes, a lot of crashes, so many god damn crashes, this mod was VERY buggy - Fixed that specific crash with the dummy mod - Fixed tooltips - Fixed misplaced compat configs - Water and rain now affects lightning(+50%), fire(-25%) and frost(+20%) damage - Generic armor is now 20% less effective - Compat for new Cataclysm update - Compat for Dungeons and Combat - Compat for Deeper Darker - Compat for Darker Depths - Compat for Companions - Compat for Artifacts - Compat for ClangingHowl - Compat for Relics - Compat for Ice and Fire - Compat for Undead Unleashed - Compat for Fathomless Crimson

Fixed crashes Added better SimplyMore compat

Fixed a couple crashes and java version