This would only be for 1.1+ and may be part of a larger world generation API if such an API arises. This API would allow for the creation of world types alongside Default, Superflat, Large Biomes and AMPLIFIED and allow for custom chunk generators and biome generators to be associated with them. The implementation would be very simple as world types are referenced by string IDs and numeric IDs are only used for ordering in the world creation screen. There is a limit of 16 world types but this list can easily be expanded with the use of a dynamic array/list.
This would only be for 1.1+ and may be part of a larger world generation API if such an API arises. This API would allow for the creation of world types alongside Default, Superflat, Large Biomes and AMPLIFIED and allow for custom chunk generators and biome generators to be associated with them. The implementation would be very simple as world types are referenced by string IDs and numeric IDs are only used for ordering in the world creation screen. There is a limit of 16 world types but this list can easily be expanded with the use of a dynamic array/list.