WorldGen Editor

# WorldGen Editor !(https://cdn.modrinth.com/data/cached_images/ec0e84b65a73836f10ba68ada87314b511ff067b.png) (https://img.shields.io/badge/GitHub-Source-black?logo=github)](https://github.com/waterflane/WorldGen-Editor) (https://img.shields.io/badge/Patreon-Support-orange?logo=patreon)](https://patreon.com/waterflane_dev) WorldGen Editor is a Minecraft world generation mod for creating island worlds from simple JSON preset files. It is made for players, server owners, and modpack developers who want configurable archipelago-style worlds without rebuilding a full custom datapack by hand. The mod keeps Minecraft's normal noise generation as the base, then routes the Overworld through island-aware biome and density logic. ## What It Does - Adds datapack-style world presets for island generation. - Adds three bundled world types: - `WGE: Islands` - `WGE: Archipelago` - `WGE: Small Island` - Adds configurable preset files in `config/worldgen_editor/presets/`. - Adds a main config file: `config/worldgen_editor/worldgen_editor.json`. - Supports `island`, `ocean`, and `archipelago` entry types. - Supports normal islands, ocean-carved straits/bays, and generated archipelago clusters. - Supports custom position, radius, stretch, rotation, base shape, coastline roughness, temperature, biome patch size, and noise settings. - Supports per-entry biome exclusions using exact biome ids and biome tags. - Supports climate-aware land and ocean fallback biome selection. - Supports configurable outer ocean biome, defaulting to `minecraft:deep_ocean`. - Keeps terrain generation soft, so islands still use vanilla-style terrain instead of flat forced shapes. - Keeps caves, ores, structures, vanilla surface logic, and terrain features as close to normal Minecraft generation as possible. - Includes a separate developer previewer for checking island layouts before generating a Minecraft world. ## Main Config The main file is: ```text config/worldgen_editor/worldgen_editor.json ``` ```json { "enabled": true, "active_preset": "archipelago" } ``` Preset files are stored here: ```text config/worldgen_editor/presets/default.json config/worldgen_editor/presets/archipelago.json config/worldgen_editor/presets/small_island.json ``` The bundled presets are: - `default`: a mixed example with a spawn island, an ocean cut, a larger island, and a warm archipelago. - `archipelago`: a spawn archipelago with many smaller islands plus extra islands around it. - `small_island`: one compact island for simple survival starts or testing. Preset priority is: ```text world type preset > config active_preset > legacy continents.json ``` That means a world created with `WGE: Archipelago` uses `presets/archipelago.json`, even if the global config fallback says `"active_preset": "default"`. Basic example: in previewer: !(https://cdn.modrinth.com/data/cached_images/0606a0d4fd85787cacc53c21a2298cbd74fc1fc8.png) in game: !(https://cdn.modrinth.com/data/cached_images/421e901c59249586c8d3ff0d71d9ab9b28ca3cb4.jpeg) For a full explanation of all fields, see wiki in the GitHub. ## How To Use 1. Install the correct mod jar for your loader. 2. Start Minecraft once so the config files can be created. 3. Edit one of the files in `config/worldgen_editor/presets/`. 4. Create a new world and select WGE world types, where you edited: ```text WGE: Islands WGE: Archipelago WGE: Small Island ``` If you edit the config while a world is already open, run: ```text /worldgen_editor reload ``` Reload affects only newly generated chunks. Existing chunks are not rebuilt. ## Previewer WorldGen Editor also has a separate previewer tool for development. It helps tune island positions, sizes, coastlines, roughness, ocean cuts, and archipelago layouts before opening Minecraft and generating a new test world. (https://github.com/waterflane/WorldGen-Editor-Preview) The previewer is intended as a helper for planning layouts. Minecraft's final terrain still depends on vanilla world generation, the selected seed, and the active world preset. ## Commands ```text /worldgen_editor enable /worldgen_editor disable /worldgen_editor status /worldgen_editor preset <name> /worldgen_editor reload ``` `status` shows the effective state, global config flag, per-world flag, selected world type preset, active preset, entry count, active config path, and world-state path. `preset <name>` changes the config fallback preset. If the world was created with a WGE world type, that world type remains the main source of truth for newly generated chunks. ## Notes - The mod is intended for new worlds. - Existing chunks are not automatically regenerated. - For clean results after major config changes, create a new world or delete the affected region files carefully. - `continents.json` is only a legacy fallback for old configs. New configs use `worldgen_editor.json` and `presets/*.jso