World Generation
Note: this documentation will assume a working knowledge of how both data packs, and custom world generation works in vanilla Minecraft. If you are unfamiliar with those topics, the wiki provides a good starting point to learn about Data Packs, Custom World Generation, and Custom Dimensions.
TFC exposes the “TFC World Generation” level-type (for servers), and preset (for clients). When you create a new world using this generation, it creates a default chunk generator and biome source. In order to modify these, you will need to override the overworld dimension (data/minecraft/dimension/overworld.json), and use the TFC chunk generator and biome source. More information can be found in the dimension article.
All other world generation, including biomes, configured features, decorators, carvers, and surface builders can be customized to various extents by replacing the specific files.
Finally, all of TFC’s world generation is already done using JSON, and every existing file can be found in the world generation folder in the TFC repository.