Translated using Weblate (Indonesian) - minetest.git - modified minetest for gpcfs purposes

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author	Muhammad Rifqi Priyo Susanto <muhammadrifqipriyosusanto@gmail.com>	2015-09-06 08:59:35 +0200
committer	est31 <MTest31@outlook.com>	2015-09-12 23:18:40 +0200
commit	1d9eb5a4d5ce0125a1aa0ed6ef50ffc5347b307c (patch)
tree	709e21e4038b83a8c30de317cd5e24a470410551 /src/voxelalgorithms.cpp
parent	d5591b65d68379de526a77dc2d79f8dc73e740bf (diff)
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Minetest Lua Client Modding API Reference 0.4.15 ================================================ * More information at <http://www.minetest.net/> * Developer Wiki: <http://dev.minetest.net/> Introduction ------------ **WARNING: The client API is currently unstable, and may break/change without warning.** Content and functionality can be added to Minetest 0.4.15-dev+ by using Lua scripting in run-time loaded mods. A mod is a self-contained bunch of scripts, textures and other related things that is loaded by and interfaces with Minetest. Transfering client-sided mods form the server to the client is planned, but not implemented yet. If you see a deficiency in the API, feel free to attempt to add the functionality in the engine and API. You can send such improvements as source code patches on GitHub (https://github.com/minetest/minetest). Programming in Lua ------------------ If you have any difficulty in understanding this, please read [Programming in Lua](http://www.lua.org/pil/). Startup ------- Mods are loaded during client startup from the mod load paths by running the `init.lua` scripts in a shared environment. Paths ----- * `RUN_IN_PLACE=1` (Windows release, local build) * `$path_user`: * Linux: `<build directory>` * Windows: `<build directory>` * `$path_share` * Linux: `<build directory>` * Windows: `<build directory>` * `RUN_IN_PLACE=0`: (Linux release) * `$path_share` * Linux: `/usr/share/minetest` * Windows: `<install directory>/minetest-0.4.x` * `$path_user`: * Linux: `$HOME/.minetest` * Windows: `C:/users/<user>/AppData/minetest` (maybe) Mod load path ------------- Generic: * `$path_share/clientmods/` * `$path_user/clientmods/` (User-installed mods) In a run-in-place version (e.g. the distributed windows version): * `minetest-0.4.x/clientmods/` (User-installed mods) On an installed version on Linux: * `/usr/share/minetest/clientmods/` * `$HOME/.minetest/clientmods/` (User-installed mods) Modpack support ---------------- **NOTE: Not implemented yet.** Mods can be put in a subdirectory, if the parent directory, which otherwise should be a mod, contains a file named `modpack.txt`. This file shall be empty, except for lines starting with `#`, which are comments. Mod directory structure ------------------------ clientmods ├── modname | ├── depends.txt | ├── init.lua └── another ### modname The location of this directory. ### depends.txt List of mods that have to be loaded before loading this mod. A single line contains a single modname. Optional dependencies can be defined by appending a question mark to a single modname. Their meaning is that if the specified mod is missing, that does not prevent this mod from being loaded. ### init.lua The main Lua script. Running this script should register everything it wants to register. Subsequent execution depends on minetest calling the registered callbacks. `minetest.setting_get(name)` and `minetest.setting_getbool(name)` can be used to read custom or existing settings at load time, if necessary. ### `sounds` Media files (sounds) that will be transferred to the client and will be available for use by the mod. Naming convention for registered textual names ---------------------------------------------- Registered names should generally be in this format: "modname:<whatever>" (<whatever> can have characters a-zA-Z0-9_) This is to prevent conflicting names from corrupting maps and is enforced by the mod loader. ### Example In the mod `experimental`, there is the ideal item/node/entity name `tnt`. So the name should be `experimental:tnt`. Enforcement can be overridden by prefixing the name with `:`. This can be used for overriding the registrations of some other mod. Example: Any mod can redefine `experimental:tnt` by using the name :experimental:tnt when registering it. (also that mod is required to have `experimental` as a dependency) The `:` prefix can also be used for maintaining backwards compatibility. Sounds ------ **NOTE: max_hear_distance and connecting to objects is not implemented.** Only Ogg Vorbis files are supported. For positional playing of sounds, only single-channel (mono) files are supported. Otherwise OpenAL will play them non-positionally. Mods should generally prefix their sounds with `modname_`, e.g. given the mod name "`foomod`", a sound could be called: foomod_foosound.ogg Sounds are referred to by their name with a dot, a single digit and the file extension stripped out. When a sound is played, the actual sound file is chosen randomly from the matching sounds. When playing the sound `foomod_foosound`, the sound is chosen randomly from the available ones of the following files: * `foomod_foosound.ogg` * `foomod_foosound.0.ogg` * `foomod_foosound.1.ogg` * (...) * `foomod_foosound.9.ogg` Examples of sound parameter tables: -- Play locationless { gain = 1.0, -- default } -- Play locationless, looped { gain = 1.0, -- default loop = true, } -- Play in a location { pos = {x = 1, y = 2, z = 3}, gain = 1.0, -- default max_hear_distance = 32, -- default, uses an euclidean metric } -- Play connected to an object, looped { object = <an ObjectRef>, gain = 1.0, -- default max_hear_distance = 32, -- default, uses an euclidean metric loop = true, } Looped sounds must either be connected to an object or played locationless. ### SimpleSoundSpec * e.g. `""` * e.g. `"default_place_node"` * e.g. `{}` * e.g. `{name = "default_place_node"}` * e.g. `{name = "default_place_node", gain = 1.0}` Representations of simple things -------------------------------- ### Position/vector {x=num, y=num, z=num} For helper functions see "Vector helpers". ### pointed_thing * `{type="nothing"}` * `{type="node", under=pos, above=pos}` * `{type="object", id=ObjectID}` Flag Specifier Format --------------------- Flags using the standardized flag specifier format can be specified in either of two ways, by string or table. The string format is a comma-delimited set of flag names; whitespace and unrecognized flag fields are ignored. Specifying a flag in the string sets the flag, and specifying a flag prefixed by the string `"no"` explicitly clears the flag from whatever the default may be. In addition to the standard string flag format, the schematic flags field can also be a table of flag names to boolean values representing whether or not the flag is set. Additionally, if a field with the flag name prefixed with `"no"` is present, mapped to a boolean of any value, the specified flag is unset. E.g. A flag field of value {place_center_x = true, place_center_y=false, place_center_z=true} is equivalent to {place_center_x = true, noplace_center_y=true, place_center_z=true} which is equivalent to "place_center_x, noplace_center_y, place_center_z" or even "place_center_x, place_center_z" since, by default, no schematic attributes are set. Formspec -------- Formspec defines a menu. It is a string, with a somewhat strange format. Spaces and newlines can be inserted between the blocks, as is used in the examples. ### Examples #### Chest size[8,9] list[context;main;0,0;8,4;] list[current_player;main;0,5;8,4;] #### Furnace size[8,9] list[context;fuel;2,3;1,1;] list[context;src;2,1;1,1;] list[context;dst;5,1;2,2;] list[current_player;main;0,5;8,4;] #### Minecraft-like player inventory size[8,7.5] image[1,0.6;1,2;player.png] list[current_player;main;0,3.5;8,4;] list[current_player;craft;3,0;3,3;] list[current_player;craftpreview;7,1;1,1;] ### Elements #### `size[<W>,<H>,<fixed_size>]` * Define the size of the menu in inventory slots * `fixed_size`: `true`/`false` (optional) * deprecated: `invsize[<W>,<H>;]` #### `container[<X>,<Y>]` * Start of a container block, moves all physical elements in the container by (X, Y) * Must have matching container_end * Containers can be nested, in which case the offsets are added (child containers are relative to parent containers) #### `container_end[]` * End of a container, following elements are no longer relative to this container #### `list[<inventory location>;<list name>;<X>,<Y>;<W>,<H>;]` * Show an inventory list #### `list[<inventory location>;<list name>;<X>,<Y>;<W>,<H>;<starting item index>]` * Show an inventory list #### `listring[<inventory location>;<list name>]` * Allows to create a ring of inventory lists * Shift-clicking on items in one element of the ring will send them to the next inventory list inside the ring * The first occurrence of an element inside the ring will determine the inventory where items will be sent to #### `listring[]` * Shorthand for doing `listring[<inventory location>;<list name>]` for the last two inventory lists added by list[...] #### `listcolors[<slot_bg_normal>;<slot_bg_hover>]` * Sets background color of slots as `ColorString` * Sets background color of slots on mouse hovering #### `listcolors[<slot_bg_normal>;<slot_bg_hover>;<slot_border>]` * Sets background color of slots as `ColorString` * Sets background color of slots on mouse hovering * Sets color of slots border #### `listcolors[<slot_bg_normal>;<slot_bg_hover>;<slot_border>;<tooltip_bgcolor>;<tooltip_fontcolor>]` * Sets background color of slots as `ColorString` * Sets background color of slots on mouse hovering * Sets color of slots border * Sets default background color of tooltips * Sets default font color of tooltips #### `tooltip[<gui_element_name>;<tooltip_text>;<bgcolor>,<fontcolor>]` * Adds tooltip for an element * `<bgcolor>` tooltip background color as `ColorString` (optional) * `<fontcolor>` tooltip font color as `ColorString` (optional) #### `image[<X>,<Y>;<W>,<H>;<texture name>]` * Show an image * Position and size units are inventory slots #### `item_image[<X>,<Y>;<W>,<H>;<item name>]` * Show an inventory image of registered item/node * Position and size units are inventory slots #### `bgcolor[<color>;<fullscreen>]` * Sets background color of formspec as `ColorString` * If `true`, the background color is drawn fullscreen (does not effect the size of the formspec) #### `background[<X>,<Y>;<W>,<H>;<texture name>]` * Use a background. Inventory rectangles are not drawn then. * Position and size units are inventory slots * Example for formspec 8x4 in 16x resolution: image shall be sized 8 times 16px times 4 times 16px. #### `background[<X>,<Y>;<W>,<H>;<texture name>;<auto_clip>]` * Use a background. Inventory rectangles are not drawn then. * Position and size units are inventory slots * Example for formspec 8x4 in 16x resolution: image shall be sized 8 times 16px times 4 times 16px * If `true` the background is clipped to formspec size (`x` and `y` are used as offset values, `w` and `h` are ignored) #### `pwdfield[<X>,<Y>;<W>,<H>;<name>;<label>]` * Textual password style field; will be sent to server when a button is clicked * When enter is pressed in field, fields.key_enter_field will be sent with the name of this field. * `x` and `y` position the field relative to the top left of the menu * `w` and `h` are the size of the field * Fields are a set height, but will be vertically centred on `h` * Position and size units are inventory slots * `name` is the name of the field as returned in fields to `on_receive_fields` * `label`, if not blank, will be text printed on the top left above the field * See field_close_on_enter to stop enter closing the formspec #### `field[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]` * Textual field; will be sent to server when a button is clicked * When enter is pressed in field, fields.key_enter_field will be sent with the name of this field. * `x` and `y` position the field relative to the top left of the menu * `w` and `h` are the size of the field * Fields are a set height, but will be vertically centred on `h` * Position and size units are inventory slots * `name` is the name of the field as returned in fields to `on_receive_fields` * `label`, if not blank, will be text printed on the top left above the field * `default` is the default value of the field * `default` may contain variable references such as `${text}'` which will fill the value from the metadata value `text` * **Note**: no extra text or more than a single variable is supported ATM. * See field_close_on_enter to stop enter closing the formspec #### `field[<name>;<label>;<default>]` * As above, but without position/size units * When enter is pressed in field, fields.key_enter_field will be sent with the name of this field. * Special field for creating simple forms, such as sign text input * Must be used without a `size[]` element * A "Proceed" button will be added automatically * See field_close_on_enter to stop enter closing the formspec #### `field_close_on_enter[<name>;<close_on_enter>]` * <name> is the name of the field * if <close_on_enter> is false, pressing enter in the field will submit the form but not close it * defaults to true when not specified (ie: no tag for a field) #### `textarea[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]` * Same as fields above, but with multi-line input #### `label[<X>,<Y>;<label>]` * `x` and `y` work as per field * `label` is the text on the label * Position and size units are inventory slots #### `vertlabel[<X>,<Y>;<label>]` * Textual label drawn vertically * `x` and `y` work as per field * `label` is the text on the label * Position and size units are inventory slots #### `button[<X>,<Y>;<W>,<H>;<name>;<label>]` * Clickable button. When clicked, fields will be sent. * `x`, `y` and `name` work as per field * `w` and `h` are the size of the button * `label` is the text on the button * Position and size units are inventory slots #### `image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>]` * `x`, `y`, `w`, `h`, and `name` work as per button * `texture name` is the filename of an image * Position and size units are inventory slots #### `image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>;<noclip>;<drawborder>;<pressed texture name>]` * `x`, `y`, `w`, `h`, and `name` work as per button * `texture name` is the filename of an image * Position and size units are inventory slots * `noclip=true` means the image button doesn't need to be within specified formsize * `drawborder`: draw button border or not * `pressed texture name` is the filename of an image on pressed state #### `item_image_button[<X>,<Y>;<W>,<H>;<item name>;<name>;<label>]` * `x`, `y`, `w`, `h`, `name` and `label` work as per button * `item name` is the registered name of an item/node, tooltip will be made out of its description to override it use tooltip element * Position and size units are inventory slots #### `button_exit[<X>,<Y>;<W>,<H>;<name>;<label>]` * When clicked, fields will be sent and the form will quit. #### `image_button_exit[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>]` * When clicked, fields will be sent and the form will quit. #### `textlist[<X>,<Y>;<W>,<H>;<name>;<listelem 1>,<listelem 2>,...,<listelem n>]` * Scrollable item list showing arbitrary text elements * `x` and `y` position the itemlist relative to the top left of the menu * `w` and `h` are the size of the itemlist * `name` fieldname sent to server on doubleclick value is current selected element * `listelements` can be prepended by #color in hexadecimal format RRGGBB (only), * if you want a listelement to start with "#" write "##". #### `textlist[<X>,<Y>;<W>,<H>;<name>;<listelem 1>,<listelem 2>,...,<listelem n>;<selected idx>;<transparent>]` * Scrollable itemlist showing arbitrary text elements * `x` and `y` position the item list relative to the top left of the menu * `w` and `h` are the size of the item list * `name` fieldname sent to server on doubleclick value is current selected element * `listelements` can be prepended by #RRGGBB (only) in hexadecimal format * if you want a listelement to start with "#" write "##" * Index to be selected within textlist * `true`/`false`: draw transparent background * See also `minetest.explode_textlist_event` (main menu: `engine.explode_textlist_event`) #### `tabheader[<X>,<Y>;<name>;<caption 1>,<caption 2>,...,<caption n>;<current_tab>;<transparent>;<draw_border>]` * Show a tab**header** at specific position (ignores formsize) * `x` and `y` position the itemlist relative to the top left of the menu * `name` fieldname data is transferred to Lua * `caption 1`...: name shown on top of tab * `current_tab`: index of selected tab 1... * `transparent` (optional): show transparent * `draw_border` (optional): draw border #### `box[<X>,<Y>;<W>,<H>;<color>]` * Simple colored semitransparent box * `x` and `y` position the box relative to the top left of the menu * `w` and `h` are the size of box * `color` is color specified as a `ColorString` #### `dropdown[<X>,<Y>;<W>;<name>;<item 1>,<item 2>, ...,<item n>;<selected idx>]` * Show a dropdown field * **Important note**: There are two different operation modes: 1. handle directly on change (only changed dropdown is submitted) 2. read the value on pressing a button (all dropdown values are available) * `x` and `y` position of dropdown * Width of dropdown * Fieldname data is transferred to Lua * Items to be shown in dropdown * Index of currently selected dropdown item #### `checkbox[<X>,<Y>;<name>;<label>;<selected>]` * Show a checkbox * `x` and `y`: position of checkbox * `name` fieldname data is transferred to Lua * `label` to be shown left of checkbox * `selected` (optional): `true`/`false` #### `scrollbar[<X>,<Y>;<W>,<H>;<orientation>;<name>;<value>]` * Show a scrollbar * There are two ways to use it: 1. handle the changed event (only changed scrollbar is available) 2. read the value on pressing a button (all scrollbars are available) * `x` and `y`: position of trackbar * `w` and `h`: width and height * `orientation`: `vertical`/`horizontal` * Fieldname data is transferred to Lua * Value this trackbar is set to (`0`-`1000`) * See also `minetest.explode_scrollbar_event` (main menu: `engine.explode_scrollbar_event`) #### `table[<X>,<Y>;<W>,<H>;<name>;<cell 1>,<cell 2>,...,<cell n>;<selected idx>]` * Show scrollable table using options defined by the previous `tableoptions[]` * Displays cells as defined by the previous `tablecolumns[]` * `x` and `y`: position the itemlist relative to the top left of the menu * `w` and `h` are the size of the itemlist * `name`: fieldname sent to server on row select or doubleclick * `cell 1`...`cell n`: cell contents given in row-major order * `selected idx`: index of row to be selected within table (first row = `1`) * See also `minetest.explode_table_event` (main menu: `engine.explode_table_event`) #### `tableoptions[<opt 1>;<opt 2>;...]` * Sets options for `table[]` * `color=#RRGGBB` * default text color (`ColorString`), defaults to `#FFFFFF` * `background=#RRGGBB` * table background color (`ColorString`), defaults to `#000000` * `border=<true/false>` * should the table be drawn with a border? (default: `true`) * `highlight=#RRGGBB` * highlight background color (`ColorString`), defaults to `#466432` * `highlight_text=#RRGGBB` * highlight text color (`ColorString`), defaults to `#FFFFFF` * `opendepth=<value>` * all subtrees up to `depth < value` are open (default value = `0`) * only useful when there is a column of type "tree" #### `tablecolumns[<type 1>,<opt 1a>,<opt 1b>,...;<type 2>,<opt 2a>,<opt 2b>;...]` * Sets columns for `table[]` * Types: `text`, `image`, `color`, `indent`, `tree` * `text`: show cell contents as text * `image`: cell contents are an image index, use column options to define images * `color`: cell contents are a ColorString and define color of following cell * `indent`: cell contents are a number and define indentation of following cell * `tree`: same as indent, but user can open and close subtrees (treeview-like) * Column options: * `align=<value>` * for `text` and `image`: content alignment within cells. Available values: `left` (default), `center`, `right`, `inline` * `width=<value>` * for `text` and `image`: minimum width in em (default: `0`) * for `indent` and `tree`: indent width in em (default: `1.5`) * `padding=<value>`: padding left of the column, in em (default `0.5`). Exception: defaults to 0 for indent columns * `tooltip=<value>`: tooltip text (default: empty) * `image` column options: * `0=<value>` sets image for image index 0 * `1=<value>` sets image for image index 1 * `2=<value>` sets image for image index 2 * and so on; defined indices need not be contiguous empty or non-numeric cells are treated as `0`. * `color` column options: * `span=<value>`: number of following columns to affect (default: infinite) **Note**: do _not_ use a element name starting with `key_`; those names are reserved to pass key press events to formspec! Spatial Vectors --------------- * `vector.new(a[, b, c])`: returns a vector: * A copy of `a` if `a` is a vector. * `{x = a, y = b, z = c}`, if all `a, b, c` are defined * `vector.direction(p1, p2)`: returns a vector * `vector.distance(p1, p2)`: returns a number * `vector.length(v)`: returns a number * `vector.normalize(v)`: returns a vector * `vector.floor(v)`: returns a vector, each dimension rounded down * `vector.round(v)`: returns a vector, each dimension rounded to nearest int * `vector.apply(v, func)`: returns a vector * `vector.equals(v1, v2)`: returns a boolean For the following functions `x` can be either a vector or a number: * `vector.add(v, x)`: returns a vector * `vector.subtract(v, x)`: returns a vector * `vector.multiply(v, x)`: returns a scaled vector or Schur product * `vector.divide(v, x)`: returns a scaled vector or Schur quotient Helper functions ---------------- * `dump2(obj, name="_", dumped={})` * Return object serialized as a string, handles reference loops * `dump(obj, dumped={})` * Return object serialized as a string * `math.hypot(x, y)` * Get the hypotenuse of a triangle with legs x and y. Useful for distance calculation. * `math.sign(x, tolerance)` * Get the sign of a number. Optional: Also returns `0` when the absolute value is within the tolerance (default: `0`) * `string.split(str, separator=",", include_empty=false, max_splits=-1, sep_is_pattern=false)` * If `max_splits` is negative, do not limit splits. * `sep_is_pattern` specifies if separator is a plain string or a pattern (regex). * e.g. `string:split("a,b", ",") == {"a","b"}` * `string:trim()` * e.g. `string.trim("\n \t\tfoo bar\t ") == "foo bar"` * `minetest.wrap_text(str, limit)`: returns a string * Adds new lines to the string to keep it within the specified character limit * limit: Maximal amount of characters in one line * `minetest.pos_to_string({x=X,y=Y,z=Z}, decimal_places))`: returns string `"(X,Y,Z)"` * Convert position to a printable string Optional: 'decimal_places' will round the x, y and z of the pos to the given decimal place. * `minetest.string_to_pos(string)`: returns a position * Same but in reverse. Returns `nil` if the string can't be parsed to a position. * `minetest.string_to_area("(X1, Y1, Z1) (X2, Y2, Z2)")`: returns two positions * Converts a string representing an area box into two positions * `minetest.is_yes(arg)` * returns whether `arg` can be interpreted as yes * `table.copy(table)`: returns a table * returns a deep copy of `table` Minetest namespace reference ------------------------------ ### Utilities * `minetest.get_current_modname()`: returns the currently loading mod's name, when we are loading a mod * `minetest.get_version()`: returns a table containing components of the engine version. Components: * `project`: Name of the project, eg, "Minetest" * `string`: Simple version, eg, "1.2.3-dev" * `hash`: Full git version (only set if available), eg, "1.2.3-dev-01234567-dirty" Use this for informational purposes only. The information in the returned table does not represent the capabilities of the engine, nor is it reliable or verifyable. Compatible forks will have a different name and version entirely. To check for the presence of engine features, test whether the functions exported by the wanted features exist. For example: `if minetest.nodeupdate then ... end`. ### Logging * `minetest.debug(...)` * Equivalent to `minetest.log(table.concat({...}, "\t"))` * `minetest.log([level,] text)` * `level` is one of `"none"`, `"error"`, `"warning"`, `"action"`, `"info"`, or `"verbose"`. Default is `"none"`. ### Global callback registration functions Call these functions only at load time! * `minetest.register_globalstep(func(dtime))` * Called every client environment step, usually interval of 0.1s * `minetest.register_on_shutdown(func())` * Called before client shutdown * **Warning**: If the client terminates abnormally (i.e. crashes), the registered callbacks **will likely not be run**. Data should be saved at semi-frequent intervals as well as on server shutdown. * `minetest.register_on_connect(func())` * Called at the end of client connection (when player is loaded onto map) * `minetest.register_on_receiving_chat_message(func(name, message))` * Called always when a client receive a message * Return `true` to mark the message as handled, which means that it will not be shown to chat * `minetest.register_on_sending_chat_message(func(name, message))` * Called always when a client send a message from chat * Return `true` to mark the message as handled, which means that it will not be sent to server * `minetest.register_chatcommand(cmd, chatcommand definition)` * Adds definition to minetest.registered_chatcommands * `minetest.unregister_chatcommand(name)` * Unregisters a chatcommands registered with register_chatcommand. * `minetest.register_on_death(func())` * Called when the local player dies * `minetest.register_on_hp_modification(func(hp))` * Called when server modified player's HP * `minetest.register_on_damage_taken(func(hp))` * Called when the local player take damages * `minetest.register_on_formspec_input(func(formname, fields))` * Called when a button is pressed in the local player's inventory form * Newest functions are called first * If function returns `true`, remaining functions are not called * `minetest.register_on_dignode(func(pos, node))` * Called when the local player digs a node * Newest functions are called first * If any function returns true, the node isn't dug * `minetest.register_on_punchnode(func(pos, node))` * Called when the local player punches a node * Newest functions are called first * If any function returns true, the punch is ignored * `minetest.register_on_placenode(function(pointed_thing, node))` * Called when a node has been placed * `minetest.register_on_item_use(func(item, pointed_thing))` * Called when the local player uses an item. * Newest functions are called first. * If any function returns true, the item use is not sent to server. ### Sounds * `minetest.sound_play(spec, parameters)`: returns a handle * `spec` is a `SimpleSoundSpec` * `parameters` is a sound parameter table * `minetest.sound_stop(handle)` ### Timing * `minetest.after(time, func, ...)` * Call the function `func` after `time` seconds, may be fractional * Optional: Variable number of arguments that are passed to `func` * `minetest.get_us_time()` * Returns time with microsecond precision. May not return wall time. * `minetest.get_day_count()` * Returns number days elapsed since world was created, accounting for time changes. * `minetest.get_timeofday()` * Returns the time of day: `0` for midnight, `0.5` for midday ### Map * `minetest.get_node(pos)` * Returns the node at the given position as table in the format `{name="node_name", param1=0, param2=0}`, returns `{name="ignore", param1=0, param2=0}` for unloaded areas. * `minetest.get_node_or_nil(pos)` * Same as `get_node` but returns `nil` for unloaded areas. * `minetest.find_node_near(pos, radius, nodenames, [search_center])`: returns pos or `nil` * `radius`: using a maximum metric * `nodenames`: e.g. `{"ignore", "group:tree"}` or `"default:dirt"` * `search_center` is an optional boolean (default: `false`) If true `pos` is also checked for the nodes * `minetest.get_meta(pos)` * Get a `NodeMetaRef` at that position * `minetest.get_node_level(pos)` * get level of leveled node (water, snow) * `minetest.get_node_max_level(pos)` * get max available level for leveled node ### Player * `minetest.get_wielded_item()` * Returns the itemstack the local player is holding * `minetest.localplayer` * Reference to the LocalPlayer object. See [`LocalPlayer`](#localplayer) class reference for methods. ### Client Environment * `minetest.get_player_names()` * Returns list of player names on server * `minetest.disconnect()` * Disconnect from the server and exit to main menu. * Returns `false` if the client is already disconnecting otherwise returns `true`. * `minetest.take_screenshot()` * Take a screenshot. * `minetest.get_server_info()` * Returns [server info](#server-info). * `minetest.send_respawn()` * Sends a respawn request to the server. ### Storage API * `minetest.get_mod_storage()`: * returns reference to mod private `StorageRef` * must be called during mod load time ### Misc. * `minetest.parse_json(string[, nullvalue])`: returns something * Convert a string containing JSON data into the Lua equivalent * `nullvalue`: returned in place of the JSON null; defaults to `nil` * On success returns a table, a string, a number, a boolean or `nullvalue` * On failure outputs an error message and returns `nil` * Example: `parse_json("[10, {\"a\":false}]")`, returns `{10, {a = false}}` * `minetest.write_json(data[, styled])`: returns a string or `nil` and an error message * Convert a Lua table into a JSON string * styled: Outputs in a human-readable format if this is set, defaults to false * Unserializable things like functions and userdata are saved as null. * **Warning**: JSON is more strict than the Lua table format. 1. You can only use strings and positive integers of at least one as keys. 2. You can not mix string and integer keys. This is due to the fact that JSON has two distinct array and object values. * Example: `write_json({10, {a = false}})`, returns `"[10, {\"a\": false}]"` * `minetest.serialize(table)`: returns a string * Convert a table containing tables, strings, numbers, booleans and `nil`s into string form readable by `minetest.deserialize` * Example: `serialize({foo='bar'})`, returns `'return { ["foo"] = "bar" }'` * `minetest.deserialize(string)`: returns a table * Convert a string returned by `minetest.deserialize` into a table * `string` is loaded in an empty sandbox environment. * Will load functions, but they cannot access the global environment. * Example: `deserialize('return { ["foo"] = "bar" }')`, returns `{foo='bar'}` * Example: `deserialize('print("foo")')`, returns `nil` (function call fails) * `error:[string "print("foo")"]:1: attempt to call global 'print' (a nil value)` * `minetest.compress(data, method, ...)`: returns `compressed_data` * Compress a string of data. * `method` is a string identifying the compression method to be used. * Supported compression methods: * Deflate (zlib): `"deflate"` * `...` indicates method-specific arguments. Currently defined arguments are: * Deflate: `level` - Compression level, `0`-`9` or `nil`. * `minetest.decompress(compressed_data, method, ...)`: returns data * Decompress a string of data (using ZLib). * See documentation on `minetest.compress()` for supported compression methods. * currently supported. * `...` indicates method-specific arguments. Currently, no methods use this. * `minetest.encode_base64(string)`: returns string encoded in base64 * Encodes a string in base64. * `minetest.decode_base64(string)`: returns string * Decodes a string encoded in base64. * `minetest.gettext(string)` : returns string * look up the translation of a string in the gettext message catalog * `fgettext_ne(string, ...)` * call minetest.gettext(string), replace "$1"..."$9" with the given extra arguments and return the result * `fgettext(string, ...)` : returns string * same as fgettext_ne(), but calls minetest.formspec_escape before returning result * `minetest.pointed_thing_to_face_pos(placer, pointed_thing)`: returns a position * returns the exact position on the surface of a pointed node * `minetest.global_exists(name)` * Checks if a global variable has been set, without triggering a warning. ### UI * `minetest.ui.minimap` * Reference to the minimap object. See [`Minimap`](#minimap) class reference for methods. * If client disabled minimap (using enable_minimap setting) this reference will be nil. * `minetest.camera` * Reference to the camera object. See [`Camera`](#camera) class reference for methods. * `minetest.show_formspec(formname, formspec)` : returns true on success * Shows a formspec to the player * `minetest.display_chat_message(message)` returns true on success * Shows a chat message to the current player. Class reference --------------- ### Minimap An interface to manipulate minimap on client UI * `show()`: shows the minimap (if not disabled by server) * `hide()`: hides the minimap * `set_pos(pos)`: sets the minimap position on screen * `get_pos()`: returns the minimap current position * `set_angle(deg)`: sets the minimap angle in degrees * `get_angle()`: returns the current minimap angle in degrees * `set_mode(mode)`: sets the minimap mode (0 to 6) * `get_mode()`: returns the current minimap mode * `set_shape(shape)`: Sets the minimap shape. (0 = square, 1 = round) * `get_shape()`: Gets the minimap shape. (0 = square, 1 = round) ### Camera An interface to get or set information about the camera and cameranode. Please do not try to access the reference until the camera is initialized, otherwise the reference will be nil. #### Methods * `set_camera_mode(mode)` * Pass `0` for first-person, `1` for third person, and `2` for third person front * `get_camera_mode()` * Returns with same syntax as above * `get_fov()` * Returns: ```lua { x = number, y = number, max = number, actual = number } ``` * `get_pos()` * Returns position of camera with view bobbing * `get_offset()` * Returns eye offset vector * `get_look_dir()` * Returns eye direction unit vector * `get_look_vertical()` * Returns pitch in radians * `get_look_horizontal()` * Returns yaw in radians * `get_aspect_ratio()` * Returns aspect ratio of screen


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