feat(worldgen): v4.1 - latitude zones via density function + Lithosphere
- Replace custom LatitudeBiomeSource/BiomeBand system with LatitudeSignalDensityFunction + LatitudeZonePlacement (mixin-based) - Add mandatory Lithosphere (mr_lithosphere) dependency + mixin config - Override overworld/large_biomes noise_settings for ultra-wide terrain - Rename remove_vanilla_ores -> z_remove_vanilla_ores (load order) - Merge cold/hot/tempered biome tags into latitude_*_surface tags - Rework OresCommand, OreBiomeFinderItem, ModConfigs for new system - Remove obsolete latitude classes, tests & world preset overrides - Bump mod_version 3.2 -> 4.1
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feldenr
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# Custom Ore Gen — 4.0 Changelog
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**Custom Ore Gen 4.0** is a full rewrite, rebuilt from the ground up for **NeoForge 1.21.1**. It drops KubeJS entirely, introduces a brand-new **latitude-based ore system**, ships custom **ultra-wide terrain** via the Lithosphere companion, and turns the **Deep Dark into a legendary northern feature**.
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This is the biggest update in the mod's history. Existing worlds from 2.x are **not** compatible — create a new world.
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---
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## 🆕 New Features
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* **Latitude-based ore generation** — Ores are now distributed by your **Z coordinate** instead of biome categories. The world is split into three bands:
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* ❄️ **Cold** (Z < −8000, north): Lapis, Deepslate Diamond
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* 🔥 **Hot** (Z > 8000, south): Pure Gold, Redstone, Copper
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* 🌳 **Temperate** (middle): Iron, Concentrated Coal
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* Works with **any biome mod** out of the box — no per-biome classification needed.
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* **Legendary Deep Dark** — The Deep Dark now only generates in cold northern latitudes, making it a true endgame destination rather than a random underground encounter. (Implemented via a safe, targeted mixin.)
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* **Custom ultra-wide terrain** — Ships a handcrafted world generation through the new **Lithosphere** companion mod (now a required dependency).
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* **Config-gated feature toggles** — A custom `ConfigGatedFeaturesModifier` makes the config feature toggles (`concentratedOres`, `impureOres`, `vanillaOreVariants`, etc.) actually gate world generation at runtime.
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* **Global Loot Modifier for drops** — Replaced fragile event-based drops with a proper data-driven loot modifier (also fixed a crash with the Create drill).
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* **Color-coded `/ores` command & Ore Biome Finder** — Output is now color-coded per zone (cold = aqua, hot = gold, temperate = green, shard ores = light purple) and clearly explains that the **Z coordinate** determines your zone.
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* **Configurable zone thresholds** — The cold/hot thresholds (default Z = ±8000) are now adjustable in `custom-ore-gen-common.toml`.
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* **Create & Mekanism compat** — Standalone-safe recipes for crushing, milling, mixing and enriching shard diamonds.
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---
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## ⚙️ Changes
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* **Migrated from Forge 1.20.1 → NeoForge 1.21.1.**
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* **Removed KubeJS dependency entirely.** Vanilla ores are now removed via NeoForge **biome modifiers** (`z_remove_vanilla_ores.json`) — no startup scripts, nothing to run.
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* **New required dependency: Lithosphere 1.7+** — provides the custom terrain the mod is balanced for.
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* Tool & armor stats are now **linked to config** — durability, speed, damage and armor values can all be tuned.
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* Emeralds remain **biome-based** (mountain and rare-biome tags), since they're tied to terrain, not latitude.
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* Rebalanced ore drop counts and XP to align with vanilla 1.21.
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* Iron and Gold ores now **ignore Fortune** like vanilla.
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* Paxel now affects every block mineable by pickaxe/shovel/axe tags.
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* Rebalanced Diamond Shard tier as a clear bridge between iron and diamond.
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---
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## 🐛 Bug Fixes
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* **Vanilla diamond leaked everywhere** — All **4** vanilla diamond placed features are now removed (`ore_diamond`, `ore_diamond_buried`, `ore_diamond_large`, `ore_diamond_medium`). Previously only 2 were removed, so buried/medium diamonds spawned in every biome.
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* **Copper showed the wrong texture in deepslate** — Custom copper now uses the vanilla two-target approach (stone → `copper_ore`, deepslate → `deepslate_copper_ore`) instead of forcing `copper_ore` everywhere.
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* **`/ores` always reported temperate** — `zoneName()` was reading static fields instead of the config getters; it now reads the live thresholds.
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* **Garbage `6a9` prefix in ore listings** — Removed a broken color-code remnant that appeared in front of every ore name.
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* **Diamond rate was way too high in cold zones** — Reduced the custom Deepslate Diamond `count` from 6 → 3 (combined with the vanilla leak fix, diamonds are now properly rare).
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* **Server hung on startup** — Removed the `SpawnRelocator` and `OreAuditHandler` entirely. They forced synchronous chunk generation on the main server thread (a known cause of deadlocks and world corruption) and the audit handler shipped a `System.exit(0)` hard-kill. Both were dev-only diagnostics that never belonged in a release.
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* **Badlands gold leaked into non-hot zones** — Added `ore_gold_extra` to the vanilla removal list.
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* **Cross-climate tag leaks** — Removed copper/gold appearing in temperate spawns due to overlapping surface tags.
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* **Caves piercing the surface** — Reverted the stretched terrain that caused cave openings to break the surface.
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* **Create processing recipes** — Repaired and made them standalone-safe (no leftover references to removed ores).
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* Various startup crashes, build errors and config-load race conditions resolved.
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---
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## 🗑️ Removals
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* **KubeJS** — no longer used or required.
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* Auto-generated `kubejs/startup_scripts/custom_ore_gen_remove_vanilla_ores.js` — replaced by biome modifiers.
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* Dead config categories, unused `EnchantabilityFix` class, and redundant `tectonic`/custom noise settings.
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* Legacy biome-tag surface files (`latitude_cold_surface`, `latitude_hot_surface`, `latitude_temperate_surface`, `cold_biomes`, `hot_biomes`, `tempered_biomes`, etc.) — superseded by the Z-based system.
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---
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## 🧪 Technical / Internal
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* Mixed-in `MultiNoiseBiomeSource` to intercept Deep Dark biome resolution safely (Mojmap, no refmap needed on production).
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* Custom `LatitudeZonePlacement` placement modifier filters ore placement by Z at the placed-feature level.
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* Comprehensive test suite added: `OresCommandTest`, `ModConfigsTest`, `ConfigurableOreDropsProcedureTest`, `OreDropMathTest`, plus an automated GameTest server for latitude validation.
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* Cleaned up block/item classes and migrated the entire test suite to NeoForge.
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---
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## 📦 Requirements
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* Minecraft 1.21.1
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* NeoForge 21.1.x
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* **Lithosphere 1.7+** (required)
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* Biomes O' Plenty, Create, Mekanism (optional, recommended)
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---
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> ⚠️ **Create a NEW world after updating.** Chunks generated before 4.0 keep their old ore distribution.
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**Happy mining!** 🌍⛏️✨
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