Erinfest/mods/MAPGEN/mcl_structures/API.md

# mcl_structures
Structure placement API for MCL2.

## mcl_structures.register_structure(name,structure definition,nospawn)
If nospawn is truthy the structure will not be placed by mapgen and the decoration parameters can be omitted. This is intended for secondary structures the placement of which gets triggered by the placement of other structures. It can also be used to register testing structures so they can be used with /spawnstruct.

### structure definition
{
	fill_ratio = OR noise = {},
	biomes = {},
	y_min =,
	y_max =,
	place_on = {},
	spawn_by = {},
	num_spawn_by =
	flags = (default: "place_center_x, place_center_z, force_placement")
	(same as decoration def)
	y_offset =, --can be a number or a function returning a number
	filenames = {} OR place_func = function(pos,def,pr)
	-- filenames can be a list of any schematics accepted by mcl_structures.place_schematic / minetest.place_schematic
	after_place = function(pos,def,pr)
}
## mcl_structures.registered_structures
Table of the registered structure defintions indexed by name.

## mcl_structures.place_structure(pos, def, pr)
Places a structure using the mapgen placement function

## mcl_structures.place_schematic(pos, schematic, rotation, replacements, force_placement, flags, after_placement_callback, pr, callback_param)