1 Minetest Lua Mainmenu API Reference 5.6.0
2 =========================================
7 The main menu is defined as a formspec by Lua in builtin/mainmenu/
8 Description of formspec language to show your menu is in lua_api.txt
14 core.button_handler(fields): called when a button is pressed.
15 ^ fields = {name1 = value1, name2 = value2, ...}
16 core.event_handler(event)
17 ^ event: "MenuQuit", "KeyEnter", "ExitButton" or "EditBoxEnter"
23 The "gamedata" table is read when calling core.start(). It should contain:
26 password = <password>,
27 address = <IP/adress>,
29 selected_world = <index>, -- 0 for client mode
30 singleplayer = <true/false>,
39 core.get_min_supp_proto()
40 ^ returns the minimum supported network protocol version
41 core.get_max_supp_proto()
42 ^ returns the maximum supported network protocol version
44 ^ opens the URL in a web browser, returns false on failure.
45 ^ Must begin with http:// or https://
47 ^ opens the path in the system file browser/explorer, returns false on failure.
48 ^ Must be an existing directory.
49 core.get_version() (possible in async calls)
50 ^ returns current core version
57 core.get_builtin_path()
58 ^ returns path to builtin root
59 core.create_dir(absolute_path) (possible in async calls)
60 ^ absolute_path to directory to create (needs to be absolute)
62 core.delete_dir(absolute_path) (possible in async calls)
63 ^ absolute_path to directory to delete (needs to be absolute)
65 core.copy_dir(source,destination,keep_soure) (possible in async calls)
68 ^ keep_source DEFAULT true --> if set to false source is deleted after copying
70 core.is_dir(path) (possible in async calls)
71 ^ returns true if path is a valid dir
72 core.extract_zip(zipfile,destination) [unzip within path required]
74 ^ destination folder to extract to
76 core.sound_play(spec, looped) -> handle
77 ^ spec = SimpleSoundSpec (see lua-api.txt)
79 core.sound_stop(handle)
80 core.get_video_drivers()
81 ^ get list of video drivers supported by engine (not all modes are guaranteed to work)
82 ^ returns list of available video drivers' settings name and 'friendly' display name
83 ^ e.g. { {name="opengl", friendly_name="OpenGL"}, {name="software", friendly_name="Software Renderer"} }
84 ^ first element of returned list is guaranteed to be the NULL driver
85 core.get_mapgen_names([include_hidden=false]) -> table of map generator algorithms
86 registered in the core (possible in async calls)
87 core.get_cache_path() -> path of cache
88 core.get_temp_path([param]) (possible in async calls)
89 ^ param=true: returns path to a temporary file
90 ^ otherwise: returns path to the temporary folder
96 * core.download_file(url, target) (possible in async calls)
97 * url to download, and target to store to
99 * `minetest.get_http_api()` (possible in async calls)
100 * returns `HTTPApiTable` containing http functions.
101 * The returned table contains the functions `fetch_sync`, `fetch_async` and
102 `fetch_async_get` described below.
103 * Function only exists if minetest server was built with cURL support.
104 * `HTTPApiTable.fetch_sync(HTTPRequest req)`: returns HTTPRequestResult
105 * Performs given request synchronously
106 * `HTTPApiTable.fetch_async(HTTPRequest req)`: returns handle
107 * Performs given request asynchronously and returns handle for
108 `HTTPApiTable.fetch_async_get`
109 * `HTTPApiTable.fetch_async_get(handle)`: returns HTTPRequestResult
110 * Return response data for given asynchronous HTTP request
112 ### `HTTPRequest` definition
114 Used by `HTTPApiTable.fetch` and `HTTPApiTable.fetch_async`.
117 url = "http://example.org",
120 -- Timeout for connection in seconds. Default is 3 seconds.
122 post_data = "Raw POST request data string" OR {field1 = "data1", field2 = "data2"},
123 -- Optional, if specified a POST request with post_data is performed.
124 -- Accepts both a string and a table. If a table is specified, encodes
125 -- table as x-www-form-urlencoded key-value pairs.
126 -- If post_data is not specified, a GET request is performed instead.
128 user_agent = "ExampleUserAgent",
129 -- Optional, if specified replaces the default minetest user agent with
132 extra_headers = { "Accept-Language: en-us", "Accept-Charset: utf-8" },
133 -- Optional, if specified adds additional headers to the HTTP request.
134 -- You must make sure that the header strings follow HTTP specification
138 -- Optional, if true performs a multipart HTTP request.
142 ### `HTTPRequestResult` definition
144 Passed to `HTTPApiTable.fetch` callback. Returned by
145 `HTTPApiTable.fetch_async_get`.
149 -- If true, the request has finished (either succeeded, failed or timed
153 -- If true, the request was successful
156 -- If true, the request timed out
168 core.update_formspec(formspec)
169 core.get_table_index(tablename) -> index
170 ^ can also handle textlists
171 core.formspec_escape(string) -> string
172 ^ escapes characters [ ] \ , ; that can not be used in formspecs
173 core.explode_table_event(string) -> table
174 ^ returns e.g. {type="CHG", row=1, column=2}
175 ^ type: "INV" (no row selected), "CHG" (selected) or "DCL" (double-click)
176 core.explode_textlist_event(string) -> table
177 ^ returns e.g. {type="CHG", index=1}
178 ^ type: "INV" (no row selected), "CHG" (selected) or "DCL" (double-click)
179 core.set_formspec_prepend(formspec)
180 ^ string to be added to every mainmenu formspec, to be used for theming.
186 core.set_background(type, texturepath,[tile],[minsize])
187 ^ type: "background", "overlay", "header" or "footer"
188 ^ tile: tile the image instead of scaling (background only)
189 ^ minsize: minimum tile size, images are scaled to at least this size prior
190 ^ doing tiling (background only)
191 core.set_clouds(<true/false>)
192 core.set_topleft_text(text)
193 core.show_keys_menu()
194 core.show_path_select_dialog(formname, caption, is_file_select)
195 ^ shows a path select dialog
196 ^ formname is base name of dialog response returned in fields
197 ^ -if dialog was accepted "_accepted"
198 ^ will be added to fieldname containing the path
199 ^ -if dialog was canceled "_cancelled"
200 ^ will be added to fieldname value is set to formname itself
201 ^ if `is_file_select` is `true`, a file and not a folder will be selected
202 ^ returns nil or selected file/folder
203 core.get_screen_info()
205 density = <screen density 0.75,1.0,2.0,3.0 ... (dpi)>,
206 display_width = <width of display>,
207 display_height = <height of display>,
208 window_width = <current window width>,
209 window_height = <current window height>,
210 render_info = <active render information>
217 Content - an installed mod, modpack, game, or texture pack (txt)
218 Package - content which is downloadable from the content db, may or may not be installed.
220 * core.get_user_path() (possible in async calls)
221 * returns path to global user data,
222 the directory that contains user-provided mods, worlds, games, and texture packs.
223 * core.get_modpath() (possible in async calls)
224 * returns path to global modpath in the user path, where mods can be installed
225 * core.get_modpaths() (possible in async calls)
226 * returns table of virtual path to global modpaths, where mods have been installed
227 The difference with "core.get_modpath" is that no mods should be installed in these
228 directories by Minetest -- they might be read-only.
234 mods = "/home/user/.minetest/mods",
235 share = "/usr/share/minetest/mods",
237 -- Custom dirs can be specified by the MINETEST_MOD_DIR env variable
238 ["/path/to/custom/dir"] = "/path/to/custom/dir",
242 * core.get_clientmodpath() (possible in async calls)
243 * returns path to global client-side modpath
244 * core.get_gamepath() (possible in async calls)
245 * returns path to global gamepath
246 * core.get_texturepath() (possible in async calls)
247 * returns path to default textures
248 * core.get_game(index)
249 * `name` in return value is deprecated, use `title` instead.
254 path = <full path to game>,
255 gamemods_path = <path>,
256 title = <title of game>,
257 menuicon_path = <full path to menuicon>,
260 addon_mods_paths = {[1] = <path>,},
263 * core.get_games() -> table of all games in upper format (possible in async calls)
264 * core.get_content_info(path)
268 name = "technical_id",
269 type = "mod" or "modpack" or "game" or "txp",
270 title = "Human readable title",
271 description = "description",
273 path = "path/to/content",
274 depends = {"mod", "names"}, -- mods only
275 optional_depends = {"mod", "names"}, -- mods only
282 core.debug(line) (possible in async calls)
283 ^ Always printed to stderr and logfile (print() is redirected here)
284 core.log(line) (possible in async calls)
285 core.log(loglevel, line) (possible in async calls)
286 ^ loglevel one of "error", "action", "info", "verbose"
292 core.settings:set(name, value)
293 core.settings:get(name) -> string or nil (possible in async calls)
294 core.settings:set_bool(name, value)
295 core.settings:get_bool(name) -> bool or nil (possible in async calls)
296 core.settings:save() -> nil, save all settings to config file
298 For a complete list of methods of the Settings object see
299 [lua_api.txt](https://github.com/minetest/minetest/blob/master/doc/lua_api.txt)
305 core.get_worlds() -> list of worlds (possible in async calls)
308 path = <full path to world>,
309 name = <name of world>,
310 gameid = <gameid of world>,
313 core.create_world(worldname, gameid)
314 core.delete_world(index)
321 ^ returns time with microsecond precision
322 core.gettext(string) -> string
323 ^ look up the translation of a string in the gettext message catalog
324 fgettext_ne(string, ...)
325 ^ call core.gettext(string), replace "$1"..."$9" with the given
326 ^ extra arguments and return the result
327 fgettext(string, ...) -> string
328 ^ same as fgettext_ne(), but calls core.formspec_escape before returning result
329 core.parse_json(string[, nullvalue]) -> something (possible in async calls)
330 ^ see core.parse_json (lua_api.txt)
332 ^ Return object serialized as a string
333 string:split(separator)
334 ^ eg. string:split("a,b", ",") == {"a","b"}
336 ^ eg. string.trim("\n \t\tfoo bar\t ") == "foo bar"
337 core.is_yes(arg) (possible in async calls)
338 ^ returns whether arg can be interpreted as yes
339 minetest.encode_base64(string) (possible in async calls)
340 ^ Encodes a string in base64.
341 minetest.decode_base64(string) (possible in async calls)
342 ^ Decodes a string encoded in base64.
348 core.handle_async(async_job,parameters,finished)
349 ^ execute a function asynchronously
350 ^ async_job is a function receiving one parameter and returning one parameter
351 ^ parameters parameter table passed to async_job
352 ^ finished function to be called once async_job has finished
353 ^ the result of async_job is passed to this function
355 Limitations of Async operations
356 -No access to global lua variables, don't even try
357 -Limited set of available functions
358 e.g. No access to functions modifying menu like core.start,core.close,
359 core.show_path_select_dialog
365 The main menu supports background music.
366 It looks for a `main_menu` sound in `$USER_PATH/sounds`. The same naming
367 conventions as for normal sounds apply.
368 This means the player can add a custom sound.
369 It will be played in the main menu (gain = 1.0), looped.