Template onetime setup

config.lua

@@ -1,4 +1,8 @@
 
 -- Setting a configuration, switch the order in which the settings shall take precedence. First valid one taken.
 
-yl_template.external_value = "mod_default" or minetest.settings:get("external_value") or "default"
+yl_template.external_value = "mod_default" or minetest.settings:get("yl_template.external_value") or "default"
+
+yl_template.save_path = "yl_template" or minetest.settings:get("yl_template.save_path") or "default"
+
+yl_template.admin_priv = "admin_priv" or minetest.settings:get("yl_template.admin_priv") or "server"

init.lua

@@ -21,6 +21,7 @@ yl_template.information.name = "yl_template"
 yl_template.information.additional = "Additional information"
 
 dofile(yl_template.modpath .. "config.lua")
+dofile(yl_template.modpath .. "setup.lua")
 dofile(yl_template.modpath .. "privs.lua")
 dofile(yl_template.modpath .. "internal.lua")
 dofile(yl_template.modpath .. "api.lua")

setup.lua

@@ -0,0 +1,16 @@
+local function run_once()
+    local dl = minetest.get_dir_list(yl_template.worldpath, true)
+    local create = true
+
+    for _, v in ipairs(dl) do
+        if v == yl_template.save_path then
+            create = false
+        end
+    end
+
+    if create then
+        minetest.mkdir(yl_template.worldpath .. DIR_DELIM .. yl_template.save_path)
+    end
+end
+
+run_once()