V22 — Mapgen

MapGen v2.2 is a community-developed tool primarily used for modding the grand strategy game Hearts of Iron IV (HOI4) . It serves as an accessible entry point for creators to design custom world maps without the need for manual, pixel-by-pixel editing of game files. The Role of MapGen v2.2 in Modding

1. Heightmap raster – 2D noise pass for base terrain.
2. 3D density fill – cave and aquifer carving.
3. Biome assignment – temperature/humidity lookup.
4. Ore placement – stratified deposit generation.
5. Feature decoration – trees, grass, mushrooms, etc.

• Mapgen v22 Approach: Rivers are calculated as distinct erosion channels after the initial continental noise is established. This creates more linear, realistic river courses that actually flow from high elevations to sea level, serving as biome borders.

Architecture and Design Principles

If you want, I can expand any section (algorithms, example code snippets for integration, or a step-by-step tutorial for using v22 in a specific engine). mapgen v22

Province Generation:

The tool can automatically generate province boundaries or accept a custom provinces.bmp . MapGen v2