Semi-procedural map generator for Minetest 5.x. It aims to create realistic and nice-looking landscapes for the game, focused on river networks. It is based on algorithms modelling water flow and river erosion at a broad scale, similar to some used by researchers in Earth Sciences. It is taking some inspiration from Fastscape.
Its main particularity compared to conventional Minetest mapgens is that rivers flow strictly downhill, and combine together to form wider rivers, until they reach the sea. Another notable feature is the possibility of large lakes above sea level.
It is recommended to use it only in new worlds, with
singlenode mapgen. On first start, it runs pre-generation to produce a grid, from which the map will be generated. This usually takes a few seconds, but depending on custom settings this can grow considerably longer.
biomegen mod is recommended to add biomes. It is also possible to add biome-registering mods like Ethereal NG.
By default, it only generates a 15k x 15k map, centered around the origin. To obtain a bigger map, you can increase grid size and/or block size in settings, but this can be more ressource-intensive (as the map has to be loaded in full at pre-generation).
Settings can be found in Minetest in the
All settings ->
Most settings are world-specific and a copy is made in
mapgen_rivers.conf in the world folder, during world first use, which means that further modification of global settings will not alter existing worlds.
The Python script
view_map.py can display the full map. You need to have Python 3 installed, as well as the libraries
matplotlib, and optionally
conda users, an
environment.yml file is provided.
It can be run from command line by passing the world folder. Example: