**WARNING: The client API is currently unstable, and may break/change without warning.**
-Content and functionality can be added to Minetest 0.4 by using Lua
+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.
-Mods are contained and ran solely on the server side. Definitions and media
-files are automatically transferred to the client.
+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
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
------------------------
- mods
- |-- modname
- | |-- depends.txt
- | |-- screenshot.png
- | |-- description.txt
- | |-- settingtypes.txt
- | |-- init.lua
- | |-- models
- | |-- textures
- | | |-- modname_stuff.png
- | | `-- modname_something_else.png
- | |-- sounds
- | |-- media
- | `-- <custom data>
- `-- another
-
+ clientmods
+ ├── modname
+ | ├── depends.txt
+ | ├── init.lua
+ └── another
### modname
-The location of this directory can be fetched by using
-`minetest.get_modpath(modname)`.
+The location of this directory.
-### `depends.txt`
+### depends.txt
List of mods that have to be loaded before loading this mod.
A single line contains a single modname.
to a single modname. Their meaning is that if the specified mod
is missing, that does not prevent this mod from being loaded.
-### `screenshot.png`
-A screenshot shown in the mod manager within the main menu. It should
-have an aspect ratio of 3:2 and a minimum size of 300×200 pixels.
-
-### `description.txt`
-A File containing description to be shown within mainmenu.
-
-### `settingtypes.txt`
-A file in the same format as the one in builtin. It will be parsed by the
-settings menu and the settings will be displayed in the "Mods" category.
-
-### `init.lua`
+### 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.
The `:` prefix can also be used for maintaining backwards compatibility.
-### Aliases
-Aliases can be added by using `minetest.register_alias(name, convert_to)` or
-`minetest.register_alias_force(name, convert_to).
-
-This will make Minetest to convert things called name to things called
-`convert_to`.
-
-The only difference between `minetest.register_alias` and
-`minetest.register_alias_force` is that if an item called `name` exists,
-`minetest.register_alias` will do nothing while
-`minetest.register_alias_force` will unregister it.
-
-This can be used for maintaining backwards compatibility.
-
-This can be also used for setting quick access names for things, e.g. if
-you have an item called `epiclylongmodname:stuff`, you could do
-
- minetest.register_alias("stuff", "epiclylongmodname:stuff")
-
-and be able to use `/giveme stuff`.
-
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
Examples of sound parameter tables:
- -- Play locationless on all clients
+ -- Play locationless
{
gain = 1.0, -- default
}
- -- Play locationless to one player
+ -- Play locationless, looped
{
- to_player = name,
- gain = 1.0, -- default
- }
- -- Play locationless to one player, looped
- {
- to_player = name,
gain = 1.0, -- default
loop = true,
}
loop = true,
}
-Looped sounds must either be connected to an object or played locationless to
-one player using `to_player = name,`
+Looped sounds must either be connected to an object or played locationless.
-### `SimpleSoundSpec`
+### SimpleSoundSpec
* e.g. `""`
* e.g. `"default_place_node"`
* e.g. `{}`
For helper functions see "Vector helpers".
-### `pointed_thing`
+### pointed_thing
* `{type="nothing"}`
* `{type="node", under=pos, above=pos}`
* `{type="object", ref=ObjectRef}`
Formspec
--------
-Formspec defines a menu. Currently not much else than inventories are
-supported. It is a string, with a somewhat strange format.
+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.
* `table.copy(table)`: returns a table
* returns a deep copy of `table`
-`minetest` namespace reference
+Minetest namespace reference
------------------------------
### Utilities
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 core.nodeupdate then ... end`.
+ `if minetest.nodeupdate then ... end`.
### Logging
* `minetest.debug(...)`
* **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
* 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
### Sounds
* `minetest.sound_play(spec, parameters)`: returns a handle
* `spec` is a `SimpleSoundSpec`
for unloaded areas.
* `minetest.get_node_or_nil(pos)`
* Same as `get_node` but returns `nil` for unloaded areas.
+* `minetest.get_meta(pos)`
+ * Get a `NodeMetaRef` at that position
### Player
* `minetest.get_wielded_item()`
* Returns the itemstack the local player is holding
+* `minetest.localplayer`
+ * Reference to the LocalPlayer object. See `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).
### Misc.
* `minetest.parse_json(string[, nullvalue])`: returns something
* Encodes a string in base64.
* `minetest.decode_base64(string)`: returns string
* Decodes a string encoded in base64.
-* `core.gettext(string) : returns string
+* `minetest.gettext(string) : returns string
* look up the translation of a string in the gettext message catalog
* `fgettext_ne(string, ...)`
- * call core.gettext(string), replace "$1"..."$9" with the given
+ * 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 core.formspec_escape before returning result
+ * 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
### UI
* `minetest.ui.minimap`
* Reference to the minimap object. See `Minimap` class reference for methods.
-* `show_formspec(formname, formspec)` : returns true on success
+* `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`
+### Minimap
An interface to manipulate minimap on client UI
* `show()`: shows the minimap (if not disabled by server)
* `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
-* `toggle_shape()`: toggles minimap shape to round or square.
+* `set_shape(shape)`: Sets the minimap shape. (0 = square, 1 = round)
+* `get_shape()`: Gets the minimap shape. (0 = square, 1 = round)
+
+### LocalPlayer
+An interface to retrieve information about the player. The player is
+not accessible until the client is fully done loading and therefore
+not at module init time.
+
+To get the localplayer handle correctly, use `on_connect()` as follows:
+
+```lua
+local localplayer
+minetest.register_on_connect(function()
+ localplayer = minetest.localplayer
+end)
+```
+
+Methods:
+
+* `get_pos()`
+ * returns current player current position
+* `get_velocity()`
+ * returns player speed vector
+* `get_hp()`
+ * returns player HP
+* `get_name()`
+ * returns player name
+* `is_attached()`
+ * returns true if player is attached
+* `is_touching_ground()`
+ * returns true if player touching ground
+* `is_in_liquid()`
+ * returns true if player is in a liquid (This oscillates so that the player jumps a bit above the surface)
+* `is_in_liquid_stable()`
+ * returns true if player is in a stable liquid (This is more stable and defines the maximum speed of the player)
+* `get_liquid_viscosity()`
+ * returns liquid viscosity (Gets the viscosity of liquid to calculate friction)
+* `is_climbing()`
+ * returns true if player is climbing
+* `swimming_vertical()`
+ * returns true if player is swimming in vertical
+* `get_physics_override()`
+ * returns:
+
+```lua
+ {
+ speed = float,
+ jump = float,
+ gravity = float,
+ sneak = boolean,
+ sneak_glitch = boolean
+ }
+```
+
+* `get_override_pos()`
+ * returns override position
+* `get_last_pos()`
+ * returns last player position before the current client step
+* `get_last_velocity()`
+ * returns last player speed
+* `get_breath()`
+ * returns the player's breath
+* `get_look_dir()`
+ * returns look direction vector
+* `get_look_horizontal()`
+ * returns look horizontal angle
+* `get_look_vertical()`
+ * returns look vertical angle
+* `get_eye_pos()`
+ * returns the player's eye position
+* `get_eye_offset()`
+ * returns the player's eye shift vector
+* `get_movement_acceleration()`
+ * returns acceleration of the player in different environments:
+
+```lua
+ {
+ fast = float,
+ air = float,
+ default = float,
+ }
+```
+
+* `get_movement_speed()`
+ * returns player's speed in different environments:
+
+```lua
+ {
+ walk = float,
+ jump = float,
+ crouch = float,
+ fast = float,
+ climb = float,
+ }
+```
+
+* `get_movement()`
+ * returns player's movement in different environments:
-### `Settings`
+```lua
+ {
+ liquid_fluidity = float,
+ liquid_sink = float,
+ liquid_fluidity_smooth = float,
+ gravity = float,
+ }
+```
+
+* `get_last_look_horizontal()`:
+ * returns last look horizontal angle
+* `get_last_look_vertical()`:
+ * returns last look vertical angle
+* `get_key_pressed()`:
+ * returns last key typed by the player
+
+### Settings
An interface to read config files in the format of `minetest.conf`.
It can be created via `Settings(filename)`.
* write changes to file
* `to_table()`: returns `{[key1]=value1,...}`
-Definition tables
+### NodeMetaRef
+Node metadata: reference extra data and functionality stored in a node.
+Can be obtained via `minetest.get_meta(pos)`.
+
+#### Methods
+* `get_string(name)`
+* `get_int(name)`
+* `get_float(name)`
+* `to_table()`: returns `nil` or a table with keys:
+ * `fields`: key-value storage
+ * `inventory`: `{list1 = {}, ...}}`
+
-----------------
### Chat command definition (`register_chatcommand`)
{
params = "<name> <privilege>", -- Short parameter description
description = "Remove privilege from player", -- Full description
- privs = {privs=true}, -- Require the "privs" privilege to run
- func = function(name, param), -- Called when command is run.
- -- Returns boolean success and text output.
+ func = function(param), -- Called when command is run.
+ -- Returns boolean success and text output.
}
+### Server info
+```lua
+{
+ address = "minetest.example.org", -- The domain name/IP address of a remote server or "" for a local server.
+ ip = "203.0.113.156", -- The IP address of the server.
+ port = 30000, -- The port the client is connected to.
+ protocol_version = 30 -- Will not be accurate at start up as the client might not be connected to the server yet, in that case it will be 0.
+}
+```
Escape sequences
----------------
Most text can contain escape sequences, that can for example color the text.
There are a few exceptions: tab headers, dropdowns and vertical labels can't.
The following functions provide escape sequences:
-* `core.get_color_escape_sequence(color)`:
+* `minetest.get_color_escape_sequence(color)`:
* `color` is a ColorString
* The escape sequence sets the text color to `color`
-* `core.colorize(color, message)`:
+* `minetest.colorize(color, message)`:
* Equivalent to:
- `core.get_color_escape_sequence(color) ..
+ `minetest.get_color_escape_sequence(color) ..
message ..
- core.get_color_escape_sequence("#ffffff")`
+ minetest.get_color_escape_sequence("#ffffff")`
* `color.get_background_escape_sequence(color)`
* `color` is a ColorString
* The escape sequence sets the background of the whole text element to
`color`. Only defined for item descriptions and tooltips.
-
+* `color.strip_foreground_colors(str)`
+ * Removes foreground colors added by `get_color_escape_sequence`.
+* `color.strip_background_colors(str)`
+ * Removes background colors added by `get_background_escape_sequence`.
+* `color.strip_colors(str)`
+ * Removes all color escape sequences.
+
`ColorString`
-------------
`#RGB` defines a color in hexadecimal format.
[CSS Color Module Level 4](http://dev.w3.org/csswg/css-color/#named-colors).
To specify the value of the alpha channel, append `#AA` to the end of the color name
(e.g. `colorname#08`). For named colors the hexadecimal string representing the alpha
-value must (always) be two hexadecima
+value must (always) be two hexadecimal digits.
projects / minetest.git / blobdiff