TFC Desire Paths

The mod adds desire paths to TerraFirmaCraft worlds. Paths form where players and animals walk often, and the new trail blocks replace the grass they cross. Each default grass type turns into the matching dirt type when a path forms, and mud can form when it is raining. Sprinting increases how often a path is created, while sneaking prevents it. The mod requires TerraFirmaCraft.

The mod also adds a grass mechanic for forests and other dark or low-light areas. Grass in too little light gradually decays into bare dirt, and it regrows once there is enough light. The effect is dynamic and produces more transitional undergrowth in forests, which can help expose clay and peat deposits. The behavior is configurable and enabled by default.

The path and grass changes are driven by a simple recipe system that datapacks can customize. Blocks and their conversions can be changed through JSON recipes, with a 1.20.1 example included. The mod is published for Forge and NeoForge, for 1.20.1 only, under the BSD 2-Clause License, and it is not open source. Every player and the server need a copy of the mod.