add compatibility for games other than minetest_game

API.txt

@@ -588,3 +588,43 @@ And this particular one is mapped slightly differently from the others:
 
 (Note the +150 and +50 offsets)
 
+
+==================
+Default game nodes
+==================
+
+Although this project was intended to be used with minetest_game, it can be
+configured to work with something else instead.  All you need to do is provide
+the names of the nodes in your game you want biome_lib's internals to use.
+
+Put these settings in your game's minetest.conf (or your client's own config,
+if desired).  You'll need to set all of them.
+
+biome_lib_default_grow_through_nodes
+	Comma-separated list of things that a spawned node is allowed to grow
+	through.  Air is always added to whatever you specify.
+	Default:  air, default:snow
+
+biome_lib_default_water_nodes
+	Comma-separated list of nodes that should be treated as water for the sake
+	of looking for neighboring "wet" ground.
+	Default: default:water_source, default:water_flowing,
+		default:river_water_source, default:river_water_flowing
+
+biome_lib_default_wet_surfaces
+	Comma-separated list of nodes that should be considered "wet" if one of
+	the aforementioned water nodes is nearby.
+	Default: default:dirt, default:dirt_with_grass, default:sand
+
+biome_lib_default_grow_nodes
+	Comma-separated list of nodes that something must be sitting on to be
+	able to actively change from one thing to another (such as a sapling
+	growing into a tree), to be used for ALL growable nodes, if the calling
+	mod doesn't provide its own lists.
+	Default: "default:dirt_with_grass"
+
+biome_lib_default_ground_nodes
+	Comma-separated list of nodes to use as the "root" of something that can
+	gradually climb up a wall, to be used for ALL such nodes, if the calling
+	mod doesn't provide its own lists.
+	Default: "default:dirt_with_grass"