mcl_structures.registered_structures = {} --[[] structure def: { 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 = filenames = {} OR place_func = function(pos,filename) after_place = function(pos) } ]]-- function mcl_structures.place_structure(pos, def, pr) if not def then return end if type(def.y_offset) == "function" then y_offset = def.y_offset(pr) elseif def.y_offset then y_offset = def.y_offset end if def.filenames then local file = def.filenames[pr:next(1,#def.filenames)] local pp = vector.offset(pos,0,y_offset,0) mcl_structures.place_schematic(pp, file, "random", nil, true, "place_center_x,place_center_z",def.after_place,pr,{pos,def}) elseif def.place_func and def.place_func(pos,def,pr) then def.after_place(pos,def,pr) end end function mcl_structures.register_structure(name,def,nospawn) --nospawn means it will be placed by another (non-nospawn) structure that contains it's structblock i.e. it will not be placed by mapgen directly local structblock = "mcl_structures:structblock_"..name local flags = "place_center_x, place_center_z, force_placement" local y_offset = 0 local sbgroups = { structblock = 1, not_in_creative_inventory=1 } if def.flags then flags = def.flags end def.name = name if nospawn then sbgroups.structblock = nil sbgroups.structblock_lbm = 1 else def.deco = minetest.register_decoration({ name = "mcl_structures:deco_"..name, decoration = structblock, deco_type = "simple", place_on = def.place_on, spawn_by = def.spawn_by, num_spawn_by = def.num_spawn_by, sidelen = 80, fill_ratio = def.fill_ratio, noise = def.noise, flags = flags, biomes = def.biomes, y_max = def.y_max, y_min = def.y_min }) local deco_id = minetest.get_decoration_id("mcl_structures:deco_"..name) minetest.set_gen_notify({decoration=true}, { deco_id }) minetest.register_on_generated(function(minp, maxp, blockseed) local gennotify = minetest.get_mapgen_object("gennotify") local pr = PseudoRandom(blockseed + 42) for _, pos in pairs(gennotify["decoration#"..deco_id] or {}) do local realpos = vector.offset(pos,0,-1,0) minetest.remove_node(realpos) mcl_structures.place_structure(realpos,def,pr) end end) end minetest.register_node(":"..structblock, {drawtype="airlike", walkable = false, pointable = false,groups = sbgroups}) mcl_structures.registered_structures[name] = def end --lbm for secondary structures (structblock included in base structure) minetest.register_lbm({ name = "mcl_structures:struct_lbm", run_at_every_load = true, nodenames = {"group:structblock_lbm"}, action = function(pos, node) local name = node.name:gsub("mcl_structures:structblock_","") local def = mcl_structures.registered_structures[name] if not def then return end minetest.remove_node(pos) mcl_structures.place_structure(pos) end })