Default World Type Mod — Guide

Supported World Type IDs

To successfully configure the mod, the correct ID string must be used. Below is a list of standard Minecraft world type IDs and common modded IDs compatible with version 1.20.1.

Vanilla World Types

World Type Name	ID String	Generation Style
Default	`minecraft:normal`	Standard Minecraft terrain.
Superflat	`minecraft:flat`	A flat world with no natural elevation.
Large Biomes	`minecraft:large_biomes`	Standard terrain with biomes scaled up by 16x.
Amplified	`minecraft:amplified`	Extreme height variations and floating islands.
Single Biome	`minecraft:single_biome_surface`	The entire world consists of one chosen biome.

Modded World Types

If you have world-generation mods installed, you can use their specific IDs. Common examples include: * Biomes O' Plenty: biomesoplenty:biomesoplenty * Skyblock Mods: skyblock:skyblock (ID varies by mod) * Terraforged: terraforged:terraforged

Example of a modded world type being selected automatically

Mechanics and Behavior

The mod operates by injecting a check into the GUI initialization of the "Create New World" screen.

Client-Side vs. Server-Side

Client-Side: When installed on a client, the mod changes the default selection in the user interface. This is ideal for single-player modpacks.
Server-Side: When installed on a dedicated server, the mod ensures that if the server.properties file does not specify a level-type, the mod's configured default will take precedence during the initial world generation.

Interaction with Existing Worlds

This mod only affects the creation of new worlds. It does not alter the generation of existing chunks in a world that has already been created. If the configuration is changed after a world is generated, the new setting will only apply if a brand-new world is started.

Mod Compatibility

Default World Type is designed to be highly compatible with other mods. It does not modify the actual generation algorithms; it simply changes the pointer that tells Minecraft which algorithm to use. As long as the target world type is correctly registered in the game's registry, this mod can call it.

Items, Blocks, and Mobs

As a technical utility mod, Default World Type does not add any of the following: * Items: No new items or tools are added to the creative or survival inventories. * Blocks: No new blocks or decorative elements are introduced. * Mobs: No new creatures, entities, or NPCs are added to the game. * Structures: No new structures are generated by this mod itself.

The mod's footprint is entirely code-based, focusing on the logic of world initialization rather than content addition.