NeoOrigins v2.1.0 - Patch Notes

Built for Minecraft 26.1 / 26.1.1 / 26.1.2 and 1.21.1 with NeoForge.

---

In-Game Origin Creator

A fresh tabbed GUI for authoring player origins without hand-writing JSON. Identity / Powers / Appearance / JSON tabs. The form renderer covers every native power type - a structured schema branch where one exists, falling back to codec reflection for the rest, so there are no gaps. Output writes a real datapack at <world>/datapacks/neoorigins_custom/; saved origins flow through the normal datapack reload, and the GUI has an explicit Apply button so authors control the reload hitch.

• Item picker for the icon field - registry-backed and searchable, so modded items appear free. Optional SNBT components.

• Per-field hover tooltips sourced from the schema and docs/schema/field_docs.json so every form field has at least a short hint.

• Raw-JSON escape hatch - per-power "raw" toggle for authors who want to drop straight to JSON for a single power.

• Live JSON preview mirrors the draft as it would land on disk; a built-in problems panel runs the same validation the server applies on save.

• Server-authoritative writes - open / save / apply gate on permission level 2 or creative (integrated server only), so non-OP clients can't drive the creator on a dedicated server.

Opened via /neoorigins editor or the "Open Origin Creator" keybind (unbound by default).

---

Mob Origin System

Origins for mobs. Pack authors and ops can attach a bundle of powers plus custom drops to any non-player LivingEntity. Origins live at data/<namespace>/origins/mob_origins/<id>.json.

• Weighted spawn rules - per-origin filters for entity type / entity tag, biome, biome tag, structure, structure tag, dimension, Y range, light range, time-of-day, and the spawn-reason set; mutex groups so two origins can't both attach to the same spawn; optional replace flag for overriding another origin mid-spawn.

• neoorigins:mob_behavior power - configurable per-origin aggression. Modes: neutral / hostile / conditional (triggered by an entity-condition list with throttled re-evaluation). Wires the vanilla NearestAttackableGoal / HurtByTargetGoal automatically.

• Per-origin drops - additive or replace; either independent-chance per entry or weighted-pool sampling. Layered onto vanilla loot via a global loot modifier. Carrier files live in the world datapack for portability - copy neoorigins_custom/ to another NeoOrigins instance and drops keep working.

• Spawn-egg minting - /neoorigins mob egg <origin> [entity_type] [count] mints a vanilla spawn egg pre-attached to the origin. Right-clicking the egg on a vanilla spawner reconfigures the spawner's next-spawn so every subsequent spawn inherits the origin too.

---

In-Game Mob Origin Creator

Same Creator framework as the player side, one package over. Identity / Powers / Spawn Rules / Drops / JSON Preview tabs. Open with /neoorigins mob editor or the "Open Mob Origin Creator" keybind (unbound by default).

---

Cross-Mod Status-Effect Reactions

neoorigins:action_on_event gains a new effect_applied event so pack authors can react to (and probabilistically cancel) any mob effect landing on the player - including effects from other mods. Pre-dispatch filters by exact id (effect) or tag (effect_tag); the usual condition block runs after the filter for things like a random_chance resistance roll. Cancel the effect with the existing neoorigins:cancel_event action.

• Post-cleanse grace window - optional immunity_ticks field grants N ticks of full immunity to the same effect id after a successful cancel, so probabilistic resistance feels like a real cleanse: a 90% roll holds for ~2 seconds rather than re-rolling on every individual bite.

• Use case - drop-in compat with infection-style mods (e.g. Fungal Infection: SPORE's spore:mycelium_ef) without a bespoke power type per mod. Same hook covers debuff-pruning antidotes, "resist this potion" talents, particle reactions to incoming buffs, and so on.

---

Bug Fixes

• Mob-origin spawn egg crashed the server on world save when held in inventory. The egg's NBT was missing a required id field that vanilla's ENTITY_DATA codec validates at encode time.

• Mob-origin spawn eggs didn't attach the origin in survival. Vanilla's spawn-egg NBT-injection is gated to creative plus permission 2; the minted egg now spawns the mob through a custom path that bypasses the gate and applies the origin directly on the returned entity.

• Mob-origin spawn eggs didn't propagate the origin to vanilla spawners. The spawner's next-spawn block didn't copy the egg's ENTITY_DATA; the egg now reconfigures the spawner with the origin marker so every subsequent spawn inherits it.

• All origins silently failed to load on world startup (26.1 only) - the icon codec read item components that weren't bound yet during the early datapack reload, NPE'd, and aborted parsing for the entire origin. All origins fell out silently with a 0 origins loaded log line. Origins now load with empty icons during the early reload and re-resolve their icons on ServerStarting once components are bound.

• Elytrian-style flight powers triggered the vanilla elytra wind sound even when the player wasn't wearing an elytra. The fall-fly sound is now suppressed unless the chest slot actually contains minecraft:elytra.

• Piglin "Fire Ward" was redundant - base Piglin already had blanket fire/lava immunity, so the tier-3 evolution overlay added nothing. Base immunity removed; the apex overlay actually grants new resistance now.

• Hiveling "Liftoff" and Elytrian "Fragile Frame" had no display names. Lang keys added.

• Origin re-selection bypass - non-OP players could reset their chosen origin for free via /origin gui or a crafted ChooseOrigin packet, skipping the Orb of Origin XP cost and orb consumption. Re-selection now requires an Orb commit, an OP-granted re-selection, or sender-OP.

• Creator validation false-rejected modded ids - origins referencing modded items / attributes / entities or dynamic registry contents (biomes, dimensions) were incorrectly flagged as invalid on save. Validation now consults the live RegistryAccess.

• Blacksmith / Cook crafted equipment lost its base stats. Quality Equipment Power was seeding from the raw ATTRIBUTE_MODIFIERS data component, which is usually empty on freshly-crafted vanilla items (their base stats come from the item's default modifiers, not a component patch). The subsequent component-set wiped the base armor toughness, mining speed, or attack damage and left only the Blacksmith bonus on top - so a crafted iron chestplate would show toughness 1 with no armor value. Now seeds from ItemStack#getAttributeModifiers() (the resolved effective modifiers), so base stats are preserved and the quality bonus stacks on top.

• /attribute commands targeting vanilla attribute ids returned "Can't find element" when this mod was loaded. The legacy-command rewriter (which fixes 1.20-era Origins++ mcfunction syntax to 1.21+) was running on every command, including modern ones, and silently corrupting attribute references in the process. Now gates on whether the original command already parses cleanly - if vanilla can resolve it, the rewriter leaves it alone and only intervenes on commands vanilla rejects.

• Size-scaling powers left the player permanently rescaled after an origin change. The clear-on-revoke step was using a per-power id derived at dispatch time, which doesn't always resolve to the same value during a revoke triggered by an origin swap or orb reroll - the modifier we added and the one we tried to remove didn't match, so the scale stuck. Now clears any neoorigins:size_* modifier by prefix sweep across the scale and interaction-range attributes, regardless of which power originally set it.

• neoorigins:crop_harvest_bonus duplicated logs from world-gen trees, stripped logs, and player-placed log walls. The bonus is intended for chopping naturally-grown wood. It now skips stripped logs entirely (registry-id prefix check on stripped_) and tracks logs placed by hand in a per-chunk attachment so breaking your own log walls back down doesn't dupe the materials. Naturally-generated trees and player-grown trees from saplings still earn the bonus - tree generation places logs via the feature system, not the player place path.

---

Commands & Config

• Canonical NeoOrigins command surface is now /neoorigins. The /origin command-tree alias is no longer registered (it claimed the Origins mod's namespace, which isn't ours). Tab-complete and /help will only suggest /neoorigins .... Existing mcfunctions or chat habits that still use /origin set @p ..., /origin mob apply ..., etc. continue to work via the compat layer - LegacyCommandRewriter transparently rewrites the leading verb so dispatch succeeds. The real Origins-mod-compat commands (/resource, /power) are untouched.

• New /neoorigins mob subtree - apply, clear, get, editor, egg. Permission level 2 required.

• In-game origin creator gated - open / save / apply requires permission level 2 or creative (integrated server only); rate-limited per player to prevent payload spam against the reload pipeline.

• Custom-pack file paths hardened - the writer enforces a strict id grammar and verifies all output stays inside the neoorigins_custom/ folder before writing anything.

---

Documentation

• New docs/MOB_ORIGINS.md - pack-author reference for the mob origin format (every field of MobOrigin, EntityTargetSpec, SpawnRules, DropRules documented with type, default, example).

• New effect_applied event entry in docs/EVENTS.md, with its filters and grace-window semantics.

• docs/POWER_TYPES.md - extended the neoorigins:action_on_event field table with block_condition, effect, effect_tag, immunity_ticks; added EFFECT_APPLIED to the event categories; new example showing 90% mycelium resistance with a 2-second grace window.

• Schema (docs/schema/power.schema.json, field_docs.json) extended for the new fields.