forked from Mirrorlandia_minetest/minetest
263 lines
9.0 KiB
Plaintext
263 lines
9.0 KiB
Plaintext
Minetest Lua Mainmenu API Reference 5.3.0
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=========================================
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Introduction
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-------------
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The main menu is defined as a formspec by Lua in builtin/mainmenu/
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Description of formspec language to show your menu is in lua_api.txt
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Callbacks
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---------
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core.buttonhandler(fields): called when a button is pressed.
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^ fields = {name1 = value1, name2 = value2, ...}
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core.event_handler(event)
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^ event: "MenuQuit", "KeyEnter", "ExitButton" or "EditBoxEnter"
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Gamedata
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--------
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The "gamedata" table is read when calling core.start(). It should contain:
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{
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playername = <name>,
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password = <password>,
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address = <IP/adress>,
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port = <port>,
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selected_world = <index>, -- 0 for client mode
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singleplayer = <true/false>,
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}
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Functions
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---------
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core.start()
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core.close()
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Filesystem:
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core.get_builtin_path()
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^ returns path to builtin root
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core.create_dir(absolute_path) (possible in async calls)
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^ absolute_path to directory to create (needs to be absolute)
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^ returns true/false
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core.delete_dir(absolute_path) (possible in async calls)
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^ absolute_path to directory to delete (needs to be absolute)
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^ returns true/false
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core.copy_dir(source,destination,keep_soure) (possible in async calls)
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^ source folder
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^ destination folder
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^ keep_source DEFAULT true --> if set to false source is deleted after copying
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^ returns true/false
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core.extract_zip(zipfile,destination) [unzip within path required]
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^ zipfile to extract
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^ destination folder to extract to
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^ returns true/false
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core.download_file(url,target) (possible in async calls)
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^ url to download
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^ target to store to
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^ returns true/false
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core.get_version() (possible in async calls)
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^ returns current core version
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core.sound_play(spec, looped) -> handle
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^ spec = SimpleSoundSpec (see lua-api.txt)
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^ looped = bool
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core.sound_stop(handle)
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core.get_video_drivers()
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^ get list of video drivers supported by engine (not all modes are guaranteed to work)
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^ returns list of available video drivers' settings name and 'friendly' display name
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^ e.g. { {name="opengl", friendly_name="OpenGL"}, {name="software", friendly_name="Software Renderer"} }
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^ first element of returned list is guaranteed to be the NULL driver
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core.get_mapgen_names([include_hidden=false]) -> table of map generator algorithms
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registered in the core (possible in async calls)
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core.get_cache_path() -> path of cache
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Formspec:
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core.update_formspec(formspec)
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core.get_table_index(tablename) -> index
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^ can also handle textlists
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core.formspec_escape(string) -> string
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^ escapes characters [ ] \ , ; that can not be used in formspecs
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core.explode_table_event(string) -> table
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^ returns e.g. {type="CHG", row=1, column=2}
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^ type: "INV" (no row selected), "CHG" (selected) or "DCL" (double-click)
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core.explode_textlist_event(string) -> table
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^ returns e.g. {type="CHG", index=1}
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^ type: "INV" (no row selected), "CHG" (selected) or "DCL" (double-click)
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core.set_formspec_prepend(formspec)
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^ string to be added to every mainmenu formspec, to be used for theming.
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GUI:
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core.set_background(type, texturepath,[tile],[minsize])
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^ type: "background", "overlay", "header" or "footer"
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^ tile: tile the image instead of scaling (background only)
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^ minsize: minimum tile size, images are scaled to at least this size prior
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^ doing tiling (background only)
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core.set_clouds(<true/false>)
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core.set_topleft_text(text)
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core.show_keys_menu()
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core.show_path_select_dialog(formname, caption, is_file_select)
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^ shows a path select dialog
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^ formname is base name of dialog response returned in fields
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^ -if dialog was accepted "_accepted"
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^ will be added to fieldname containing the path
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^ -if dialog was canceled "_cancelled"
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^ will be added to fieldname value is set to formname itself
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^ if `is_file_select` is `true`, a file and not a folder will be selected
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^ returns nil or selected file/folder
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core.get_screen_info()
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^ returns {
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density = <screen density 0.75,1.0,2.0,3.0 ... (dpi)>,
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display_width = <width of display>,
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display_height = <height of display>,
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window_width = <current window width>,
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window_height = <current window height>
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}
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### Content and Packages
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Content - an installed mod, modpack, game, or texture pack (txt)
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Package - content which is downloadable from the content db, may or may not be installed.
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* core.get_modpath() (possible in async calls)
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* returns path to global modpath
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* core.get_clientmodpath() (possible in async calls)
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* returns path to global client-side modpath
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* core.get_gamepath() (possible in async calls)
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* returns path to global gamepath
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* core.get_texturepath() (possible in async calls)
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* returns path to default textures
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* core.get_game(index)
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* returns:
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{
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id = <id>,
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path = <full path to game>,
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gamemods_path = <path>,
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name = <name of game>,
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menuicon_path = <full path to menuicon>,
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author = "author",
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DEPRECATED:
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addon_mods_paths = {[1] = <path>,},
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}
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* core.get_games() -> table of all games in upper format (possible in async calls)
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* core.get_content_info(path)
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* returns
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{
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name = "name of content",
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type = "mod" or "modpack" or "game" or "txp",
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description = "description",
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author = "author",
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path = "path/to/content",
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depends = {"mod", "names"}, -- mods only
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optional_depends = {"mod", "names"}, -- mods only
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}
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Favorites:
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core.get_favorites(location) -> list of favorites (possible in async calls)
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^ location: "local" or "online"
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^ returns {
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[1] = {
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clients = <number of clients/nil>,
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clients_max = <maximum number of clients/nil>,
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version = <server version/nil>,
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password = <true/nil>,
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creative = <true/nil>,
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damage = <true/nil>,
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pvp = <true/nil>,
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description = <server description/nil>,
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name = <server name/nil>,
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address = <address of server/nil>,
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port = <port>
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clients_list = <array of clients/nil>
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mods = <array of mods/nil>
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},
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...
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}
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core.delete_favorite(id, location) -> success
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Logging:
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core.debug(line) (possible in async calls)
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^ Always printed to stderr and logfile (print() is redirected here)
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core.log(line) (possible in async calls)
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core.log(loglevel, line) (possible in async calls)
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^ loglevel one of "error", "action", "info", "verbose"
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Settings:
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core.settings:set(name, value)
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core.settings:get(name) -> string or nil (possible in async calls)
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core.settings:set_bool(name, value)
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core.settings:get_bool(name) -> bool or nil (possible in async calls)
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core.settings:save() -> nil, save all settings to config file
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For a complete list of methods of the Settings object see
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[lua_api.txt](https://github.com/minetest/minetest/blob/master/doc/lua_api.txt)
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Worlds:
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core.get_worlds() -> list of worlds (possible in async calls)
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^ returns {
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[1] = {
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path = <full path to world>,
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name = <name of world>,
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gameid = <gameid of world>,
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},
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}
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core.create_world(worldname, gameid)
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core.delete_world(index)
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Helpers:
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core.get_us_time()
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^ returns time with microsecond precision
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core.gettext(string) -> string
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^ look up the translation of a string in the gettext message catalog
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fgettext_ne(string, ...)
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^ call core.gettext(string), replace "$1"..."$9" with the given
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^ extra arguments and return the result
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fgettext(string, ...) -> string
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^ same as fgettext_ne(), but calls core.formspec_escape before returning result
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core.parse_json(string[, nullvalue]) -> something (possible in async calls)
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^ see core.parse_json (lua_api.txt)
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dump(obj, dumped={})
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^ Return object serialized as a string
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string:split(separator)
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^ eg. string:split("a,b", ",") == {"a","b"}
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string:trim()
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^ eg. string.trim("\n \t\tfoo bar\t ") == "foo bar"
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core.is_yes(arg) (possible in async calls)
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^ returns whether arg can be interpreted as yes
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minetest.encode_base64(string) (possible in async calls)
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^ Encodes a string in base64.
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minetest.decode_base64(string) (possible in async calls)
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^ Decodes a string encoded in base64.
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Version compat:
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core.get_min_supp_proto()
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^ returns the minimum supported network protocol version
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core.get_max_supp_proto()
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^ returns the maximum supported network protocol version
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Other:
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core.open_url(url)
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^ opens the URL in a web browser, returns false on failure.
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^ Must begin with http:// or https://
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Async:
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core.handle_async(async_job,parameters,finished)
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^ execute a function asynchronously
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^ async_job is a function receiving one parameter and returning one parameter
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^ parameters parameter table passed to async_job
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^ finished function to be called once async_job has finished
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^ the result of async_job is passed to this function
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Limitations of Async operations
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-No access to global lua variables, don't even try
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-Limited set of available functions
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e.g. No access to functions modifying menu like core.start,core.close,
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core.show_path_select_dialog
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Background music
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----------------
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The main menu supports background music.
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It looks for a `main_menu` sound in `$USER_PATH/sounds`. The same naming
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conventions as for normal sounds apply.
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This means the player can add a custom sound.
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It will be played in the main menu (gain = 1.0), looped.
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