Minetest Lua Modding API Reference
==================================
+
* More information at <http://www.minetest.net/>
* Developer Wiki: <http://dev.minetest.net/>
Introduction
------------
+
Content and functionality can be added to Minetest using Lua scripting
in run-time loaded mods.
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 server 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>`
+ * `$path_user`: `<build directory>`
+ * `$path_share`: `<build directory>`
* `RUN_IN_PLACE=0`: (Linux release)
- * `$path_share`
+ * `$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)
+
+
+
Games
------
+=====
+
Games are looked up from:
-* `$path_share/games/gameid/`
-* `$path_user/games/gameid/`
+* `$path_share/games/<gameid>/`
+* `$path_user/games/<gameid>/`
-Where `gameid` is unique to each game.
+Where `<gameid>` is unique to each game.
The game directory can contain the following files:
-* `game.conf`, which contains:
- * `name = <Human-readable full name of the game>` e.g. `name = Minetest`
- * Optionally, game.conf can also contain
- `disallowed_mapgens = <comma-separated mapgens>`
+* `game.conf`, with the following keys:
+ * `name`: Required, human readable name e.g. `name = Minetest`
+ * `description`: Short description to be shown in the content tab
+ * `disallowed_mapgens = <comma-separated mapgens>`
e.g. `disallowed_mapgens = v5,v6,flat`
These mapgens are removed from the list of mapgens for the game.
* `minetest.conf`:
texturepack, overriding mod textures.
Any server texturepack will override mod textures and the game texturepack.
-### Menu images
+Menu images
+-----------
Games can provide custom main menu images. They are put inside a `menu`
directory inside the game directory.
images named like `$identifier.$n.png`, with an ascending number $n starting
with 1, and a random image will be chosen from the provided ones.
-Mod load path
--------------
-Generic:
-* `$path_share/games/gameid/mods/`
-* `$path_share/mods/`
-* `$path_user/games/gameid/mods/`
-* `$path_user/mods/` (User-installed mods)
-* `$worldpath/worldmods/`
-In a run-in-place version (e.g. the distributed windows version):
-* `minetest-0.4.x/games/gameid/mods/`
-* `minetest-0.4.x/mods/` (User-installed mods)
-* `minetest-0.4.x/worlds/worldname/worldmods/`
+Mods
+====
-On an installed version on Linux:
+Mod load path
+-------------
-* `/usr/share/minetest/games/gameid/mods/`
-* `$HOME/.minetest/mods/` (User-installed mods)
-* `$HOME/.minetest/worlds/worldname/worldmods`
+Paths are relative to the directories listed in the [Paths] section above.
+
+* `games/<gameid>/mods/`
+* `mods/`
+* `worlds/<worldname>/worldmods/`
+
+World-specific games
+--------------------
-Mod load path for world-specific games
---------------------------------------
It is possible to include a game in a world; in this case, no mods or
games are loaded or checked from anywhere else.
-This is useful for e.g. adventure worlds.
+This is useful for e.g. adventure worlds and happens if the `<worldname>/game/`
+directory exists.
-This happens if the following directory exists:
+Mods should then be placed in `<worldname>/game/mods/`.
- $world/game/
+Modpacks
+--------
-Mods should be then be placed in:
+Mods can be put in a subdirectory, if the parent directory, which otherwise
+should be a mod, contains a file named `modpack.conf`.
+The file is a key-value store of modpack details.
- $world/game/mods/
+* `name`: The modpack name.
+* `description`: Description of mod to be shown in the Mods tab of the main
+ menu.
-Modpack support
-----------------
-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.
+Note: to support 0.4.x, please also create an empty modpack.txt file.
Mod directory structure
-------------------------
+-----------------------
mods
- |-- modname
- | |-- mod.conf
- | |-- screenshot.png
- | |-- settingtypes.txt
- | |-- init.lua
- | |-- models
- | |-- textures
- | | |-- modname_stuff.png
- | | `-- modname_something_else.png
- | |-- sounds
- | |-- media
- | |-- locale
- | `-- <custom data>
- `-- another
+ ├── modname
+ │ ├── mod.conf
+ │ ├── screenshot.png
+ │ ├── settingtypes.txt
+ │ ├── init.lua
+ │ ├── models
+ │ ├── textures
+ │ │ ├── modname_stuff.png
+ │ │ └── modname_something_else.png
+ │ ├── sounds
+ │ ├── media
+ │ ├── locale
+ │ └── <custom data>
+ └── another
### modname
+
The location of this directory can be fetched by using
`minetest.get_modpath(modname)`.
### mod.conf
+
A key-value store of mod details.
-* `name` - the mod name. Allows Minetest to determine the mod name even if the
- folder is wrongly named.
-* `description` - Description of mod to be shown in the Mods tab of the mainmenu.
-* `depends` - A comma separated list of dependencies. These are mods that must
- be loaded before this mod.
-* `optional_depends` - A comma separated list of optional dependencies.
- Like a dependency, but no error if the mod doesn't exist.
+* `name`: The mod name. Allows Minetest to determine the mod name even if the
+ folder is wrongly named.
+* `description`: Description of mod to be shown in the Mods tab of the main
+ menu.
+* `depends`: A comma separated list of dependencies. These are mods that must be
+ loaded before this mod.
+* `optional_depends`: A comma separated list of optional dependencies.
+ Like a dependency, but no error if the mod doesn't exist.
Note: to support 0.4.x, please also provide depends.txt.
### `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.
### `depends.txt`
+
**Deprecated:** you should use mod.conf instead.
This file is used if there are no dependencies in mod.conf.
is missing, it does not prevent this mod from being loaded.
### `description.txt`
+
**Deprecated:** you should use mod.conf instead.
This file is used if there is no description in mod.conf.
-A file containing a description to be shown in the Mods tab of the mainmenu.
+A file containing a description to be shown in the Mods tab of the main menu.
### `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`
+
The main Lua script. Running this script should register everything it
wants to register. Subsequent execution depends on minetest calling the
registered callbacks.
`minetest.settings` can be used to read custom or existing settings at load
-time, if necessary. (See `Settings`)
+time, if necessary. (See [`Settings`])
### `models`
+
Models for entities or meshnodes.
### `textures`, `sounds`, `media`
+
Media files (textures, sounds, whatever) that will be transferred to the
client and will be available for use by the mod.
### `locale`
-Translation files for the clients. (See `Translations`)
-Naming convention for registered textual names
-----------------------------------------------
+Translation files for the clients. (See [Translations])
+
+Naming conventions
+------------------
+
Registered names should generally be in this format:
- `modname:<whatever>`
+ modname:<whatever>
`<whatever>` can have these characters:
This is to prevent conflicting names from corrupting maps and is
enforced by the mod loader.
+Registered names can be overridden by prefixing the name with `:`. This can
+be used for overriding the registrations of some other mod.
+
+The `:` prefix can also be used for maintaining backwards compatibility.
+
### 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
+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)
+when registering it. That mod is required to have `experimental` as a
+dependency.
+
+
-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 converts anything called `name` to `convert_to`.
+Aliases of itemnames can be added by using
+`minetest.register_alias(alias, original_name)` or
+`minetest.register_alias_force(alias, original_name)`.
+
+This adds an alias `alias` for the item called `original_name`.
+From now on, you can use `alias` to refer to the item `original_name`.
The only difference between `minetest.register_alias` and
-`minetest.register_alias_force` is that if an item called `name` exists,
+`minetest.register_alias_force` is that if an item named `alias` already exists,
`minetest.register_alias` will do nothing while
`minetest.register_alias_force` will unregister it.
Mapgen aliases
--------------
+
In a game, a certain number of these must be set to tell core mapgens which
of the game's nodes are to be used by the core mapgens. For example:
minetest.register_alias("mapgen_stone", "default:stone")
-### Aliases needed for all mapgens except Mapgen v6
+### Aliases needed for all mapgens except Mapgen V6
+
+#### Base terrain
+
+* mapgen_stone
+* mapgen_water_source
+* mapgen_river_water_source
+
+#### Caves
+
+Not required if cave liquid nodes are set in biome definitions.
+
+* mapgen_lava_source
+
+#### Dungeons
-Base terrain:
+Not required if dungeon nodes are set in biome definitions.
-"mapgen_stone"
-"mapgen_water_source"
-"mapgen_river_water_source"
+* mapgen_cobble
+* mapgen_stair_cobble
+* mapgen_mossycobble
+* mapgen_desert_stone
+* mapgen_stair_desert_stone
+* mapgen_sandstone
+* mapgen_sandstonebrick
+* mapgen_stair_sandstone_block
-Caves:
+### Aliases needed for Mapgen V6
-"mapgen_lava_source"
+#### Terrain and biomes
-Dungeons:
+* mapgen_stone
+* mapgen_water_source
+* mapgen_lava_source
+* mapgen_dirt
+* mapgen_dirt_with_grass
+* mapgen_sand
+* mapgen_gravel
+* mapgen_desert_stone
+* mapgen_desert_sand
+* mapgen_dirt_with_snow
+* mapgen_snowblock
+* mapgen_snow
+* mapgen_ice
-Only needed for registered biomes where 'node_stone' is stone:
-"mapgen_cobble"
-"mapgen_stair_cobble"
-"mapgen_mossycobble"
-Only needed for registered biomes where 'node_stone' is desert stone:
-"mapgen_desert_stone"
-"mapgen_stair_desert_stone"
-Only needed for registered biomes where 'node_stone' is sandstone:
-"mapgen_sandstone"
-"mapgen_sandstonebrick"
-"mapgen_stair_sandstone_block"
+#### Flora
-### Aliases needed for Mapgen v6
+* mapgen_tree
+* mapgen_leaves
+* mapgen_apple
+* mapgen_jungletree
+* mapgen_jungleleaves
+* mapgen_junglegrass
+* mapgen_pine_tree
+* mapgen_pine_needles
-Terrain and biomes:
+#### Dungeons
-"mapgen_stone"
-"mapgen_water_source"
-"mapgen_lava_source"
-"mapgen_dirt"
-"mapgen_dirt_with_grass"
-"mapgen_sand"
-"mapgen_gravel"
-"mapgen_desert_stone"
-"mapgen_desert_sand"
-"mapgen_dirt_with_snow"
-"mapgen_snowblock"
-"mapgen_snow"
-"mapgen_ice"
+* mapgen_cobble
+* mapgen_stair_cobble
+* mapgen_mossycobble
+* mapgen_stair_desert_stone
-Flora:
+### Setting the node used in Mapgen Singlenode
+
+By default the world is filled with air nodes. To set a different node use, for
+example:
+
+ minetest.register_alias("mapgen_singlenode", "default:stone")
-"mapgen_tree"
-"mapgen_leaves"
-"mapgen_apple"
-"mapgen_jungletree"
-"mapgen_jungleleaves"
-"mapgen_junglegrass"
-"mapgen_pine_tree"
-"mapgen_pine_needles"
-Dungeons:
-"mapgen_cobble"
-"mapgen_stair_cobble"
-"mapgen_mossycobble"
-"mapgen_stair_desert_stone"
Textures
---------
+========
+
Mods should generally prefix their textures with `modname_`, e.g. given
the mod name `foomod`, a texture could be called:
Texture modifiers
-----------------
+
There are various texture modifiers that can be used
to generate textures on-the-fly.
### Texture overlaying
+
Textures can be overlaid by putting a `^` between them.
Example:
the higher resolution texture.
### Texture grouping
+
Textures can be grouped together by enclosing them in `(` and `)`.
Example: `cobble.png^(thing1.png^thing2.png)`
texture is overlaid on top of `cobble.png`.
### Escaping
+
Modifiers that accept texture names (e.g. `[combine`) accept escaping to allow
passing complex texture names as arguments. Escaping is done with backslash and
is required for `^` and `:`.
### Advanced texture modifiers
#### Crack
+
* `[crack:<n>:<p>`
* `[cracko:<n>:<p>`
* `[crack:<t>:<n>:<p>`
* `[cracko:<t>:<n>:<p>`
Parameters:
-* `<t>` = tile count (in each direction)
-* `<n>` = animation frame count
-* `<p>` = current animation frame
+
+* `<t>`: tile count (in each direction)
+* `<n>`: animation frame count
+* `<p>`: current animation frame
Draw a step of the crack animation on the texture.
`crack` draws it normally, while `cracko` lays it over, keeping transparent
default_cobble.png^[crack:10:1
#### `[combine:<w>x<h>:<x1>,<y1>=<file1>:<x2>,<y2>=<file2>:...`
-* `<w>` = width
-* `<h>` = height
-* `<x>` = x position
-* `<y>` = y position
-* `<file>` = texture to combine
+
+* `<w>`: width
+* `<h>`: height
+* `<x>`: x position
+* `<y>`: y position
+* `<file>`: texture to combine
Creates a texture of size `<w>` times `<h>` and blits the listed files to their
specified coordinates.
[combine:16x32:0,0=default_cobble.png:0,16=default_wood.png
#### `[resize:<w>x<h>`
+
Resizes the texture to the given dimensions.
Example:
default_sandstone.png^[resize:16x16
#### `[opacity:<r>`
+
Makes the base image transparent according to the given ratio.
-`r` must be between 0 and 255.
-0 means totally transparent. 255 means totally opaque.
+`r` must be between 0 (transparent) and 255 (opaque).
Example:
default_sandstone.png^[opacity:127
#### `[invert:<mode>`
+
Inverts the given channels of the base image.
Mode may contain the characters "r", "g", "b", "a".
Only the channels that are mentioned in the mode string will be inverted.
default_apple.png^[invert:rgb
#### `[brighten`
+
Brightens the texture.
Example:
tnt_tnt_side.png^[brighten
#### `[noalpha`
+
Makes the texture completely opaque.
Example:
default_leaves.png^[noalpha
#### `[makealpha:<r>,<g>,<b>`
+
Convert one color to transparency.
Example:
default_cobble.png^[makealpha:128,128,128
#### `[transform<t>`
-* `<t>` = transformation(s) to apply
+
+* `<t>`: transformation(s) to apply
Rotates and/or flips the image.
default_stone.png^[transformFXR90
#### `[inventorycube{<top>{<left>{<right>`
+
Escaping does not apply here and `^` is replaced by `&` in texture names
instead.
`dirt.png^grass_side.png` textures
#### `[lowpart:<percent>:<file>`
+
Blit the lower `<percent>`% part of `<file>` on the texture.
Example:
base.png^[lowpart:25:overlay.png
#### `[verticalframe:<t>:<n>`
-* `<t>` = animation frame count
-* `<n>` = current animation frame
+
+* `<t>`: animation frame count
+* `<n>`: current animation frame
Crops the texture to a frame of a vertical animation.
default_torch_animated.png^[verticalframe:16:8
#### `[mask:<file>`
+
Apply a mask to the base image.
The mask is applied using binary AND.
#### `[sheet:<w>x<h>:<x>,<y>`
+
Retrieves a tile at position x,y from the base image
which it assumes to be a tilesheet with dimensions w,h.
-
#### `[colorize:<color>:<ratio>`
+
Colorize the textures with the given color.
`<color>` is specified as a `ColorString`.
`<ratio>` is an int ranging from 0 to 255 or the word "`alpha`". If
texture pixel.
#### `[multiply:<color>`
+
Multiplies texture colors with the given color.
`<color>` is specified as a `ColorString`.
Result is more like what you'd expect if you put a color on top of another
-color. Meaning white surfaces get a lot of your new color while black parts
+color, meaning white surfaces get a lot of your new color while black parts
don't change very much.
Hardware coloring
-----------------
+
The goal of hardware coloring is to simplify the creation of
colorful nodes. If your textures use the same pattern, and they only
differ in their color (like colored wool blocks), you can use hardware
with red coloring will result in red-black color).
### Static coloring
+
This method is useful if you wish to create nodes/items with
the same texture, in different colors, each in a new node/item definition.
#### Global color
+
When you register an item or node, set its `color` field (which accepts a
`ColorSpec`) to the desired color.
-An `ItemStack`s static color can be overwritten by the `color` metadata
+An `ItemStack`'s static color can be overwritten by the `color` metadata
field. If you set that field to a `ColorString`, that color will be used.
#### Tile color
+
Each tile may have an individual static color, which overwrites every
-other coloring methods. To disable the coloring of a face,
+other coloring method. To disable the coloring of a face,
set its color to white (because multiplying with white does nothing).
You can set the `color` property of the tiles in the node's definition
if the tile is in table format.
### Palettes
+
For nodes and items which can have many colors, a palette is more
suitable. A palette is a texture, which can contain up to 256 pixels.
Each pixel is one possible color for the node/item.
You can register one node/item, which can have up to 256 colors.
#### Palette indexing
+
When using palettes, you always provide a pixel index for the given
node or `ItemStack`. The palette is read from left to right and from
top to bottom. If the palette has less than 256 pixels, then it is
* 16x16 palette, index = 4: the fifth pixel in the first row
* 16x16 palette, index = 16: the pixel below the top left corner
* 16x16 palette, index = 255: the bottom right corner
-* 2 (width)x4 (height) palette, index=31: the top left corner.
+* 2 (width) x 4 (height) palette, index = 31: the top left corner.
The palette has 8 pixels, so each pixel is stretched to 32 pixels,
to ensure the total 256 pixels.
-* 2x4 palette, index=32: the top right corner
-* 2x4 palette, index=63: the top right corner
-* 2x4 palette, index=64: the pixel below the top left corner
+* 2x4 palette, index = 32: the top right corner
+* 2x4 palette, index = 63: the top right corner
+* 2x4 palette, index = 64: the pixel below the top left corner
#### Using palettes with items
+
When registering an item, set the item definition's `palette` field to
a texture. You can also use texture modifiers.
index of the pixel to use.
#### Linking palettes with nodes
+
When registering a node, set the item definition's `palette` field to
a texture. You can also use texture modifiers.
The node's color depends on its `param2`, so you also must set an
To colorize a node on the map, set its `param2` value (according
to the node's paramtype2).
-### Conversion between nodes in the inventory and the on the map
+### Conversion between nodes in the inventory and on the map
+
Static coloring is the same for both cases, there is no need
for conversion.
})
### Colored items in craft recipes
+
Craft recipes only support item strings, but fortunately item strings
can also contain metadata. Example craft recipe registration:
Soft texture overlay
--------------------
+
Sometimes hardware coloring is not enough, because it affects the
whole tile. Soft texture overlays were added to Minetest to allow
the dynamic coloring of only specific parts of the node's texture.
palette = "default_foilage.png",
})
+
+
+
Sounds
-------
+======
+
Only Ogg Vorbis files are supported.
For positional playing of sounds, only single-channel (mono) files are
-- Play locationless on all clients
{
- gain = 1.0, -- default
- fade = 0.0, -- default, change to a value > 0 to fade the sound in
- pitch = 1.0, -- default
+ gain = 1.0, -- default
+ fade = 0.0, -- default, change to a value > 0 to fade the sound in
+ pitch = 1.0, -- default
}
-- Play locationless to one player
{
to_player = name,
- gain = 1.0, -- default
- fade = 0.0, -- default, change to a value > 0 to fade the sound in
- pitch = 1.0, -- default
+ gain = 1.0, -- default
+ fade = 0.0, -- default, change to a value > 0 to fade the sound in
+ pitch = 1.0, -- default
}
-- Play locationless to one player, looped
{
to_player = name,
- gain = 1.0, -- default
+ 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
+ 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
+ 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 to
-one player using `to_player = name,`
+one player using `to_player = name,`.
+
+A positional sound will only be heard by players that are within
+`max_hear_distance` of the sound position, at the start of the sound.
+
+`SimpleSoundSpec`
+-----------------
-### `SimpleSoundSpec`
* e.g. `""`
* e.g. `"default_place_node"`
* e.g. `{}`
* e.g. `{name = "default_place_node", gain = 1.0}`
* e.g. `{name = "default_place_node", gain = 1.0, pitch = 1.0}`
-Registered definitions of stuff
--------------------------------
-Anything added using certain `minetest.register_*` functions get added to
-the global `minetest.registered_*` tables.
-
-* `minetest.register_entity(name, prototype table)`
- * added to `minetest.registered_entities[name]`
-
-* `minetest.register_node(name, node definition)`
- * added to `minetest.registered_items[name]`
- * added to `minetest.registered_nodes[name]`
-
-* `minetest.register_tool(name, item definition)`
- * added to `minetest.registered_items[name]`
-
-* `minetest.register_craftitem(name, item definition)`
- * added to `minetest.registered_items[name]`
-
-* `minetest.unregister_item(name)`
- * Unregisters the item name from engine, and deletes the entry with key
- * `name` from `minetest.registered_items` and from the associated item
- * table according to its nature: `minetest.registered_nodes[]` etc
-
-* `minetest.register_biome(biome definition)`
- * returns an integer uniquely identifying the registered biome
- * added to `minetest.registered_biome` with the key of `biome.name`
- * if `biome.name` is nil, the key is the returned ID
-
-* `minetest.unregister_biome(name)`
- * Unregisters the biome name from engine, and deletes the entry with key
- * `name` from `minetest.registered_biome`
-
-* `minetest.register_ore(ore definition)`
- * returns an integer uniquely identifying the registered ore
- * added to `minetest.registered_ores` with the key of `ore.name`
- * if `ore.name` is nil, the key is the returned ID
-
-* `minetest.register_decoration(decoration definition)`
- * returns an integer uniquely identifying the registered decoration
- * added to `minetest.registered_decorations` with the key of
- `decoration.name`.
- * if `decoration.name` is nil, the key is the returned ID
-
-* `minetest.register_schematic(schematic definition)`
- * returns an integer uniquely identifying the registered schematic
- * added to `minetest.registered_schematic` with the key of `schematic.name`
- * if `schematic.name` is nil, the key is the returned ID
- * if the schematic is loaded from a file, schematic.name is set to the
- filename.
- * if the function is called when loading the mod, and schematic.name is a
- relative path, then the current mod path will be prepended to the
- schematic filename.
-* `minetest.clear_registered_biomes()`
- * clears all biomes currently registered
-* `minetest.clear_registered_ores()`
- * clears all ores currently registered
-* `minetest.clear_registered_decorations()`
- * clears all decorations currently registered
+Registered definitions
+======================
-* `minetest.clear_registered_schematics()`
- * clears all schematics currently registered
+Anything added using certain [Registration functions] gets added to one or more
+of the global [Registered definition tables].
Note that in some cases you will stumble upon things that are not contained
in these tables (e.g. when a mod has been removed). Always check for
existence before trying to access the fields.
-Example: If you want to check the drawtype of a node, you could do:
+Example:
+
+All nodes register with `minetest.register_node` get added to the table
+`minetest.registered_nodes`.
+
+If you want to check the drawtype of a node, you could do:
local function get_nodedef_field(nodename, fieldname)
if not minetest.registered_nodes[nodename] then
end
local drawtype = get_nodedef_field(nodename, "drawtype")
-Example: `minetest.get_item_group(name, group)` has been implemented as:
- function minetest.get_item_group(name, group)
- if not minetest.registered_items[name] or not
- minetest.registered_items[name].groups[group] then
- return 0
- end
- return minetest.registered_items[name].groups[group]
- end
+
Nodes
------
+=====
+
Nodes are the bulk data of the world: cubes and other things that take the
space of a cube. Huge amounts of them are handled efficiently, but they
are quite static.
-The definition of a node is stored and can be accessed by name in
+The definition of a node is stored and can be accessed by using
minetest.registered_nodes[node.name]
-See "Registered definitions of stuff".
+See [Registered definitions].
Nodes are passed by value between Lua and the engine.
They are represented by a table:
them for certain automated functions. If you don't use these functions, you can
use them to store arbitrary values.
+Node paramtypes
+---------------
+
The functions of `param1` and `param2` are determined by certain fields in the
-node definition:
+node definition.
`param1` is reserved for the engine when `paramtype != "none"`:
- paramtype = "light"
- ^ The value stores light with and without sun in its upper and lower 4 bits
- respectively. Allows light to propagate from or through the node with
- light value falling by 1 per node. This is essential for a light source
- node to spread its light.
+* `paramtype = "light"`
+ * The value stores light with and without sun in its upper and lower 4 bits
+ respectively.
+ * Required by a light source node to enable spreading its light.
+ * Required by the following drawtypes as they determine their visual
+ brightness from their internal light value:
+ * torchlike
+ * signlike
+ * firelike
+ * fencelike
+ * raillike
+ * nodebox
+ * mesh
+ * plantlike
+ * plantlike_rooted
`param2` is reserved for the engine when any of these are used:
- liquidtype == "flowing"
- ^ The level and some flags of the liquid is stored in param2
- drawtype == "flowingliquid"
- ^ The drawn liquid level is read from param2
- drawtype == "torchlike"
- drawtype == "signlike"
- paramtype2 == "wallmounted"
- ^ The rotation of the node is stored in param2. You can make this value
- by using minetest.dir_to_wallmounted().
- paramtype2 == "facedir"
- ^ The rotation of the node is stored in param2. Furnaces and chests are
- rotated this way. Can be made by using minetest.dir_to_facedir().
- Values range 0 - 23
- facedir / 4 = axis direction:
- 0 = y+ 1 = z+ 2 = z- 3 = x+ 4 = x- 5 = y-
- facedir modulo 4 = rotation around that axis
- paramtype2 == "leveled"
- ^ Only valid for "nodebox" with 'type = "leveled"', and "plantlike_rooted".
- Leveled nodebox:
- The level of the top face of the nodebox is stored in param2.
- The other faces are defined by 'fixed = {}' like 'type = "fixed"'
- nodeboxes.
- The nodebox height is (param2 / 64) nodes.
- The maximum accepted value of param2 is 127.
- Rooted plantlike:
- The height of the 'plantlike' section is stored in param2.
- The height is (param2 / 16) nodes.
- paramtype2 == "degrotate"
- ^ Only valid for "plantlike". The rotation of the node is stored in param2.
- Values range 0 - 179. The value stored in param2 is multiplied by two to
+* `liquidtype = "flowing"`
+ * The level and some flags of the liquid is stored in `param2`
+* `drawtype = "flowingliquid"`
+ * The drawn liquid level is read from `param2`
+* `drawtype = "torchlike"`
+* `drawtype = "signlike"`
+* `paramtype2 = "wallmounted"`
+ * The rotation of the node is stored in `param2`. You can make this value
+ by using `minetest.dir_to_wallmounted()`.
+* `paramtype2 = "facedir"`
+ * The rotation of the node is stored in `param2`. Furnaces and chests are
+ rotated this way. Can be made by using `minetest.dir_to_facedir()`.
+ * Values range 0 - 23
+ * facedir / 4 = axis direction:
+ 0 = y+, 1 = z+, 2 = z-, 3 = x+, 4 = x-, 5 = y-
+ * facedir modulo 4 = rotation around that axis
+* `paramtype2 = "leveled"`
+ * Only valid for "nodebox" with 'type = "leveled"', and "plantlike_rooted".
+ * Leveled nodebox:
+ * The level of the top face of the nodebox is stored in `param2`.
+ * The other faces are defined by 'fixed = {}' like 'type = "fixed"'
+ nodeboxes.
+ * The nodebox height is (`param2` / 64) nodes.
+ * The maximum accepted value of `param2` is 127.
+ * Rooted plantlike:
+ * The height of the 'plantlike' section is stored in `param2`.
+ * The height is (`param2` / 16) nodes.
+* `paramtype2 = "degrotate"`
+ * Only valid for "plantlike". The rotation of the node is stored in
+ `param2`.
+ * Values range 0 - 179. The value stored in `param2` is multiplied by two to
get the actual rotation in degrees of the node.
- paramtype2 == "meshoptions"
- ^ Only valid for "plantlike". The value of param2 becomes a bitfield which
+* `paramtype2 = "meshoptions"`
+ * Only valid for "plantlike". The value of `param2` becomes a bitfield which
can be used to change how the client draws plantlike nodes.
- Bits 0, 1 and 2 form a mesh selector.
+ * Bits 0, 1 and 2 form a mesh selector.
Currently the following meshes are choosable:
- 0 = a "x" shaped plant (ordinary plant)
- 1 = a "+" shaped plant (just rotated 45 degrees)
- 2 = a "*" shaped plant with 3 faces instead of 2
- 3 = a "#" shaped plant with 4 faces instead of 2
- 4 = a "#" shaped plant with 4 faces that lean outwards
- 5-7 are unused and reserved for future meshes.
- Bits 3 through 7 are optional flags that can be combined and give these
+ * 0 = a "x" shaped plant (ordinary plant)
+ * 1 = a "+" shaped plant (just rotated 45 degrees)
+ * 2 = a "*" shaped plant with 3 faces instead of 2
+ * 3 = a "#" shaped plant with 4 faces instead of 2
+ * 4 = a "#" shaped plant with 4 faces that lean outwards
+ * 5-7 are unused and reserved for future meshes.
+ * Bits 3 through 7 are optional flags that can be combined and give these
effects:
- bit 3 (0x08) - Makes the plant slightly vary placement horizontally
- bit 4 (0x10) - Makes the plant mesh 1.4x larger
- bit 5 (0x20) - Moves each face randomly a small bit down (1/8 max)
- bits 6-7 are reserved for future use.
- paramtype2 == "color"
- ^ `param2` tells which color is picked from the palette.
+ * bit 3 (0x08) - Makes the plant slightly vary placement horizontally
+ * bit 4 (0x10) - Makes the plant mesh 1.4x larger
+ * bit 5 (0x20) - Moves each face randomly a small bit down (1/8 max)
+ * bits 6-7 are reserved for future use.
+* `paramtype2 = "color"`
+ * `param2` tells which color is picked from the palette.
The palette should have 256 pixels.
- paramtype2 == "colorfacedir"
- ^ Same as `facedir`, but with colors.
- The first three bits of `param2` tells which color
- is picked from the palette.
- The palette should have 8 pixels.
- paramtype2 == "colorwallmounted"
- ^ Same as `wallmounted`, but with colors.
- The first five bits of `param2` tells which color
- is picked from the palette.
- The palette should have 32 pixels.
- paramtype2 == "glasslikeliquidlevel"
- ^ Only valid for "glasslike_framed" or "glasslike_framed_optional"
+* `paramtype2 = "colorfacedir"`
+ * Same as `facedir`, but with colors.
+ * The first three bits of `param2` tells which color is picked from the
+ palette. The palette should have 8 pixels.
+* `paramtype2 = "colorwallmounted"`
+ * Same as `wallmounted`, but with colors.
+ * The first five bits of `param2` tells which color is picked from the
+ palette. The palette should have 32 pixels.
+* `paramtype2 = "glasslikeliquidlevel"`
+ * Only valid for "glasslike_framed" or "glasslike_framed_optional"
drawtypes.
- param2 values 0-63 define 64 levels of internal liquid, 0 being empty and
- 63 being full.
- Liquid texture is defined using `special_tiles = {"modname_tilename.png"},`
+ * `param2` values 0-63 define 64 levels of internal liquid, 0 being empty
+ and 63 being full.
+ * Liquid texture is defined using `special_tiles = {"modname_tilename.png"}`
-Nodes can also contain extra data. See "Node Metadata".
+Nodes can also contain extra data. See [Node Metadata].
Node drawtypes
--------------
+
There are a bunch of different looking node types.
Look for examples in `games/minimal` or `games/minetest_game`.
* `glasslike_framed`
* All face-connected nodes are drawn as one volume within a surrounding
frame.
- * The frame appearence is generated from the edges of the first texture
+ * The frame appearance is generated from the edges of the first texture
specified in `tiles`. The width of the edges used are 1/16th of texture
size: 1 pixel for 16x16, 2 pixels for 32x32 etc.
* The glass 'shine' (or other desired detail) on each node face is supplied
side of a node.
* `plantlike`
* Two vertical and diagonal textures at right-angles to each other.
- * See `paramtype2 == "meshoptions"` above for other options.
+ * See `paramtype2 = "meshoptions"` above for other options.
* `firelike`
* When above a flat surface, appears as 6 textures, the central 2 as
`plantlike` plus 4 more surrounding those.
* `nodebox`
* Often used for stairs and slabs.
* Allows defining nodes consisting of an arbitrary number of boxes.
- * See 'Node boxes' below for more information.
+ * See [Node boxes] below for more information.
* `mesh`
* Uses models for nodes.
* Tiles should hold model materials textures.
Node boxes
----------
+
Node selection boxes are defined using "node boxes".
A nodebox is defined as any of:
disconnected_right = box OR {box1, box2, ...}
disconnected = box OR {box1, box2, ...} -- when there is *no* neighbour
disconnected_sides = box OR {box1, box2, ...} -- when there are *no*
- neighbours to the sides
+ -- neighbours to the sides
}
A `box` is defined as:
{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
-Perlin noise
-------------
-Perlin noise creates a continuously-varying value depending on the input values.
-Usually in Minetest the input values are either 2D or 3D co-ordinates in nodes.
-The result is used during map generation to create the terrain shape, vary heat
-and humidity to distribute biomes, vary the density of decorations or vary the
-structure of ores.
-### Structure of perlin noise
-An 'octave' is a simple noise generator that outputs a value between -1 and 1.
-The smooth wavy noise it generates has a single characteristic scale, almost
-like a 'wavelength', so on its own does not create fine detail.
-Due to this perlin noise combines several octaves to create variation on
-multiple scales. Each additional octave has a smaller 'wavelength' than the
-previous.
-This combination results in noise varying very roughly between -2.0 and 2.0 and
-with an average value of 0.0, so `scale` and `offset` are then used to multiply
-and offset the noise variation.
-The final perlin noise variation is created as follows:
+Map terminology and coordinates
+===============================
-noise = offset + scale * (octave1 +
- octave2 * persistence +
- octave3 * persistence ^ 2 +
- octave4 * persistence ^ 3 +
- ...)
+Nodes, mapblocks, mapchunks
+---------------------------
-Noise Parameters
-----------------
-Noise Parameters are commonly called `NoiseParams`.
+A 'node' is the fundamental cubic unit of a world and appears to a player as
+roughly 1x1x1 meters in size.
-### `offset`
-After the multiplication by `scale` this is added to the result and is the final
-step in creating the noise value.
-Can be positive or negative.
+A 'mapblock' (often abbreviated to 'block') is 16x16x16 nodes and is the
+fundamental region of a world that is stored in the world database, sent to
+clients and handled by many parts of the engine.
+'mapblock' is preferred terminology to 'block' to help avoid confusion with
+'node', however 'block' often appears in the API.
-### `scale`
-Once all octaves have been combined, the result is multiplied by this.
-Can be positive or negative.
+A 'mapchunk' (sometimes abbreviated to 'chunk') is usually 5x5x5 mapblocks
+(80x80x80 nodes) and is the volume of world generated in one operation by
+the map generator.
+The size in mapblocks has been chosen to optimise map generation.
-### `spread`
-For octave1, this is roughly the change of input value needed for a very large
-variation in the noise value generated by octave1. It is almost like a
-'wavelength' for the wavy noise variation.
-Each additional octave has a 'wavelength' that is smaller than the previous
-octave, to create finer detail. `spread` will therefore roughly be the typical
-size of the largest structures in the final noise variation.
+Coordinates
+-----------
-`spread` is a vector with values for x, y, z to allow the noise variation to be
-stretched or compressed in the desired axes.
-Values are positive numbers.
+### Orientation of axes
-### `seed`
-This is a whole number that determines the entire pattern of the noise
-variation. Altering it enables different noise patterns to be created.
-With other parameters equal, different seeds produce different noise patterns
-and identical seeds produce identical noise patterns.
+For node and mapblock coordinates, +X is East, +Y is up, +Z is North.
-For this parameter you can randomly choose any whole number. Usually it is
-preferable for this to be different from other seeds, but sometimes it is useful
-to be able to create identical noise patterns.
+### Node coordinates
-When used in mapgen this is actually a 'seed offset', it is added to the
-'world seed' to create the seed used by the noise, to ensure the noise has a
-different pattern in different worlds.
+Almost all positions used in the API use node coordinates.
-### `octaves`
-The number of simple noise generators that are combined.
-A whole number, 1 or more.
-Each additional octave adds finer detail to the noise but also increases the
-noise calculation load.
-3 is a typical minimum for a high quality, complex and natural-looking noise
-variation. 1 octave has a slight 'gridlike' appearence.
+### Mapblock coordinates
-Choose the number of octaves according to the `spread` and `lacunarity`, and the
-size of the finest detail you require. For example:
-if `spread` is 512 nodes, `lacunarity` is 2.0 and finest detail required is 16
-nodes, octaves will be 6 because the 'wavelengths' of the octaves will be
-512, 256, 128, 64, 32, 16 nodes.
+Occasionally the API uses 'blockpos' which refers to mapblock coordinates that
+specify a particular mapblock.
+For example blockpos (0,0,0) specifies the mapblock that extends from
+node position (0,0,0) to node position (15,15,15).
-### `persistence`
-Each additional octave has an amplitude that is the amplitude of the previous
-octave multiplied by `persistence`, to reduce the amplitude of finer details,
-as is often helpful and natural to do so.
-Since this controls the balance of fine detail to large-scale detail
-`persistence` can be thought of as the 'roughness' of the noise.
+#### Converting node position to the containing blockpos
-A positive or negative non-zero number, often between 0.3 and 1.0.
-A common medium value is 0.5, such that each octave has half the amplitude of
-the previous octave.
-This may need to be tuned when altering `lacunarity`; when doing so consider
-that a common medium value is 1 / lacunarity.
+To calculate the blockpos of the mapblock that contains the node at 'nodepos',
+for each axis:
-### `lacunarity`
-Each additional octave has a 'wavelength' that is the 'wavelength' of the
-previous octave multiplied by 1 / lacunarity, to create finer detail.
-'lacunarity' is often 2.0 so 'wavelength' often halves per octave.
+* blockpos = math.floor(nodepos / 16)
-A positive number no smaller than 1.0.
-Values below 2.0 create higher quality noise at the expense of requiring more
-octaves to cover a paticular range of 'wavelengths'.
+#### Converting blockpos to min/max node positions
-### `flags`
-Leave this field unset for no special handling.
-Currently supported are `defaults`, `eased` and `absvalue`:
+To calculate the min/max node positions contained in the mapblock at 'blockpos',
+for each axis:
-#### `defaults`
-Specify this if you would like to keep auto-selection of eased/not-eased while
-specifying some other flags.
+* Minimum:
+ nodepos = blockpos * 16
+* Maximum:
+ nodepos = blockpos * 16 + 15
-#### `eased`
-Maps noise gradient values onto a quintic S-curve before performing
-interpolation. This results in smooth, rolling noise.
-Disable this (`noeased`) for sharp-looking noise with a slightly gridded
-appearence.
-If no flags are specified (or defaults is), 2D noise is eased and 3D noise is
-not eased.
-Easing a 3D noise significantly increases the noise calculation load, so use
-with restraint.
-#### `absvalue`
-The absolute value of each octave's noise variation is used when combining the
-octaves. The final perlin noise variation is created as follows:
-noise = offset + scale * (abs(octave1) +
- abs(octave2) * persistence +
- abs(octave3) * persistence ^ 2 +
- abs(octave4) * persistence ^ 3 +
- ...)
-
-###Format example
-For 2D or 3D perlin noise or perlin noise maps:
-
- np_terrain = {
- offset = 0,
- scale = 1,
- spread = {x = 500, y = 500, z = 500},
- seed = 571347,
- octaves = 5,
- persist = 0.63,
- lacunarity = 2.0,
- flags = "defaults, absvalue",
- }
-
-For 2D noise the Z component of `spread` is still defined but is ignored.
-A single noise parameter table can be used for 2D or 3D noise.
-
-Ore types
----------
-These tell in what manner the ore is generated.
-
-All default ores are of the uniformly-distributed scatter type.
-
-### `scatter`
-Randomly chooses a location and generates a cluster of ore.
-
-If `noise_params` is specified, the ore will be placed if the 3D perlin noise
-at that point is greater than the `noise_threshold`, giving the ability to
-create a non-equal distribution of ore.
-
-### `sheet`
-Creates a sheet of ore in a blob shape according to the 2D perlin noise
-described by `noise_params` and `noise_threshold`. This is essentially an
-improved version of the so-called "stratus" ore seen in some unofficial mods.
-
-This sheet consists of vertical columns of uniform randomly distributed height,
-varying between the inclusive range `column_height_min` and `column_height_max`.
-If `column_height_min` is not specified, this parameter defaults to 1.
-If `column_height_max` is not specified, this parameter defaults to `clust_size`
-for reverse compatibility. New code should prefer `column_height_max`.
-
-The `column_midpoint_factor` parameter controls the position of the column at
-which ore emanates from.
-If 1, columns grow upward. If 0, columns grow downward. If 0.5, columns grow
-equally starting from each direction.
-`column_midpoint_factor` is a decimal number ranging in value from 0 to 1. If
-this parameter is not specified, the default is 0.5.
-
-The ore parameters `clust_scarcity` and `clust_num_ores` are ignored for this
-ore type.
-
-### `puff`
-Creates a sheet of ore in a cloud-like puff shape.
-
-As with the `sheet` ore type, the size and shape of puffs are described by
-`noise_params` and `noise_threshold` and are placed at random vertical
-positions within the currently generated chunk.
-
-The vertical top and bottom displacement of each puff are determined by the
-noise parameters `np_puff_top` and `np_puff_bottom`, respectively.
-
-### `blob`
-Creates a deformed sphere of ore according to 3d perlin noise described by
-`noise_params`. The maximum size of the blob is `clust_size`, and
-`clust_scarcity` has the same meaning as with the `scatter` type.
-
-### `vein`
-Creates veins of ore varying in density by according to the intersection of two
-instances of 3d perlin noise with different seeds, both described by
-`noise_params`.
-
-`random_factor` varies the influence random chance has on placement of an ore
-inside the vein, which is `1` by default. Note that modifying this parameter
-may require adjusting `noise_threshold`.
-
-The parameters `clust_scarcity`, `clust_num_ores`, and `clust_size` are ignored
-by this ore type.
-
-This ore type is difficult to control since it is sensitive to small changes.
-The following is a decent set of parameters to work from:
-
- noise_params = {
- offset = 0,
- scale = 3,
- spread = {x=200, y=200, z=200},
- seed = 5390,
- octaves = 4,
- persist = 0.5,
- lacunarity = 2.0,
- flags = "eased",
- },
- noise_threshold = 1.6
-
-**WARNING**: Use this ore type *very* sparingly since it is ~200x more
-computationally expensive than any other ore.
-
-### `stratum`
-Creates a single undulating ore stratum that is continuous across mapchunk
-borders and horizontally spans the world.
-
-The 2D perlin noise described by `noise_params` defines the Y co-ordinate of
-the stratum midpoint. The 2D perlin noise described by `np_stratum_thickness`
-defines the stratum's vertical thickness (in units of nodes). Due to being
-continuous across mapchunk borders the stratum's vertical thickness is
-unlimited.
-
-If the noise parameter `noise_params` is omitted the ore will occur from y_min
-to y_max in a simple horizontal stratum.
-
-A parameter `stratum_thickness` can be provided instead of the noise parameter
-`np_stratum_thickness`, to create a constant thickness.
-
-Leaving out one or both noise parameters makes the ore generation less
-intensive, useful when adding multiple strata.
-
-`y_min` and `y_max` define the limits of the ore generation and for performance
-reasons should be set as close together as possible but without clipping the
-stratum's Y variation.
-
-Each node in the stratum has a 1-in-`clust_scarcity` chance of being ore, so a
-solid-ore stratum would require a `clust_scarcity` of 1.
-
-The parameters `clust_num_ores`, `clust_size`, `noise_threshold` and
-`random_factor` are ignored by this ore type.
-
-Ore attributes
---------------
-See section "Flag Specifier Format".
-
-Currently supported flags:
-`puff_cliffs`, `puff_additive_composition`.
-
-### `puff_cliffs`
-If set, puff ore generation will not taper down large differences in
-displacement when approaching the edge of a puff. This flag has no effect for
-ore types other than `puff`.
-
-### `puff_additive_composition`
-By default, when noise described by `np_puff_top` or `np_puff_bottom` results
-in a negative displacement, the sub-column at that point is not generated. With
-this attribute set, puff ore generation will instead generate the absolute
-difference in noise displacement values. This flag has no effect for ore types
-other than `puff`.
-
-Decoration types
-----------------
-The varying types of decorations that can be placed.
-
-### `simple`
-Creates a 1 times `H` times 1 column of a specified node (or a random node from
-a list, if a decoration list is specified). Can specify a certain node it must
-spawn next to, such as water or lava, for example. Can also generate a
-decoration of random height between a specified lower and upper bound.
-This type of decoration is intended for placement of grass, flowers, cacti,
-papyri, waterlilies and so on.
-
-### `schematic`
-Copies a box of `MapNodes` from a specified schematic file (or raw description).
-Can specify a probability of a node randomly appearing when placed.
-This decoration type is intended to be used for multi-node sized discrete
-structures, such as trees, cave spikes, rocks, and so on.
-
-
-Schematic specifier
---------------------
-A schematic specifier identifies a schematic by either a filename to a
-Minetest Schematic file (`.mts`) or through raw data supplied through Lua,
-in the form of a table. This table specifies the following fields:
-
-* The `size` field is a 3D vector containing the dimensions of the provided
- schematic. (required)
-* The `yslice_prob` field is a table of {ypos, prob} which sets the `ypos`th
- vertical slice of the schematic to have a `prob / 256 * 100` chance of
- occurring. (default: 255)
-* The `data` field is a flat table of MapNode tables making up the schematic,
- in the order of `[z [y [x]]]`. (required)
- Each MapNode table contains:
- * `name`: the name of the map node to place (required)
- * `prob` (alias `param1`): the probability of this node being placed
- (default: 255)
- * `param2`: the raw param2 value of the node being placed onto the map
- (default: 0)
- * `force_place`: boolean representing if the node should forcibly overwrite
- any previous contents (default: false)
-
-About probability values:
-
-* A probability value of `0` or `1` means that node will never appear
- (0% chance).
-* A probability value of `254` or `255` means the node will always appear
- (100% chance).
-* If the probability value `p` is greater than `1`, then there is a
- `(p / 256 * 100)` percent chance that node will appear when the schematic is
- placed on the map.
-
-
-Schematic attributes
---------------------
-See section "Flag Specifier Format".
-
-Currently supported flags: `place_center_x`, `place_center_y`, `place_center_z`,
- `force_placement`.
-
-* `place_center_x`: Placement of this decoration is centered along the X axis.
-* `place_center_y`: Placement of this decoration is centered along the Y axis.
-* `place_center_z`: Placement of this decoration is centered along the Z axis.
-* `force_placement`: Schematic nodes other than "ignore" will replace existing
- nodes.
+HUD
+===
HUD element types
-----------------
+
The position field is used for all element types.
To account for differing resolutions, the position coordinates are the
`0` draws from left to right, `1` draws from right to left, `2` draws from
top to bottom, and `3` draws from bottom to top.
-The `alignment` field specifies how the item will be aligned. It ranges from
-`-1` to `1`, with `0` being the center. `-1` is moved to the left/up, and `1`
-is to the right/down. Fractional values can be used.
+The `alignment` field specifies how the item will be aligned. It is a table
+where `x` and `y` range from `-1` to `1`, with `0` being central. `-1` is
+moved to the left/up, and `1` is to the right/down. Fractional values can be
+used.
The `offset` field specifies a pixel offset from the position. Contrary to
position, the offset is not scaled to screen size. This allows for some
Below are the specific uses for fields in each type; fields not listed for that
type are ignored.
-**Note**: Future revisions to the HUD API may be incompatible; the HUD API is
-still in the experimental stages.
-
### `image`
+
Displays an image on the HUD.
* `scale`: The scale of the image, with 1 being the original texture size.
* `offset`: offset in pixels from position.
### `text`
+
Displays text on the HUD.
* `scale`: Defines the bounding rectangle of the text.
* `offset`: offset in pixels from position.
### `statbar`
+
Displays a horizontal bar made up of half-images.
* `text`: The name of the texture that is used.
pack image size)
### `inventory`
+
* `text`: The name of the inventory list to be displayed.
* `number`: Number of items in the inventory to be displayed.
* `item`: Position of item that is selected.
* `offset`: offset in pixels from position.
### `waypoint`
+
Displays distance to selected world position.
* `name`: The name of the waypoint.
text.
* `world_pos`: World position of the waypoint.
+
+
+
Representations of simple things
---------------------------------
+================================
-### Position/vector
+Position/vector
+---------------
{x=num, y=num, z=num}
-For helper functions see "Vector helpers".
+For helper functions see [Spatial Vectors].
+
+`pointed_thing`
+---------------
-### `pointed_thing`
* `{type="nothing"}`
* `{type="node", under=pos, above=pos}`
* `{type="object", ref=ObjectRef}`
+Exact pointing location (currently only `Raycast` supports these fields):
+
+* `pointed_thing.intersection_point`: The absolute world coordinates of the
+ point on the selection box which is pointed at. May be in the selection box
+ if the pointer is in the box too.
+* `pointed_thing.box_id`: The ID of the pointed selection box (counting starts
+ from 1).
+* `pointed_thing.intersection_normal`: Unit vector, points outwards of the
+ selected selection box. This specifies which face is pointed at.
+ Is a null vector `{x = 0, y = 0, z = 0}` when the pointer is inside the
+ selection box.
+
+
+
+
Flag Specifier Format
----------------------
+=====================
+
Flags using the standardized flag specifier format can be specified in either
of two ways, by string or table.
since, by default, no schematic attributes are set.
+
+
+
Items
------
+=====
+
+Item types
+----------
-### Item types
There are three kinds of items: nodes, tools and craftitems.
-* Node (`register_node`): A node from the world.
-* Tool (`register_tool`): A tool/weapon that can dig and damage
- things according to `tool_capabilities`.
-* Craftitem (`register_craftitem`): A miscellaneous item.
+* Node: Can be placed in the world's voxel grid
+* Tool: Has a wear property but cannot be stacked. The default use action is to
+ dig nodes or hit objects according to its tool capabilities.
+* Craftitem: Cannot dig nodes or be placed
+
+Amount and wear
+---------------
-### Amount and wear
-All item stacks have an amount between 0 to 65535. It is 1 by
+All item stacks have an amount between 0 and 65535. It is 1 by
default. Tool item stacks can not have an amount greater than 1.
-Tools use a wear (=damage) value ranging from 0 to 65535. The
-value 0 is the default and used is for unworn tools. The values
+Tools use a wear (damage) value ranging from 0 to 65535. The
+value 0 is the default and is used for unworn tools. The values
1 to 65535 are used for worn tools, where a higher value stands for
a higher wear. Non-tools always have a wear value of 0.
-### Item formats
+Item formats
+------------
+
Items and item stacks can exist in three formats: Serializes, table format
and `ItemStack`.
-#### Serialized
+When an item must be passed to a function, it can usually be in any of
+these formats.
+
+### Serialized
+
This is called "stackstring" or "itemstring". It is a simple string with
1-3 components: the full item identifier, an optional amount and an optional
wear value. Syntax:
* `'default:pick_stone'`: a new stone pickaxe
* `'default:pick_wood 1 21323'`: a wooden pickaxe, ca. 1/3 worn out
-#### Table format
+### Table format
+
Examples:
5 dirt nodes:
{name="default:apple", count=1, wear=0, metadata=""}
-#### `ItemStack`
+### `ItemStack`
+
A native C++ format with many helper methods. Useful for converting
-between formats. See the Class reference section for details.
+between formats. See the [Class reference] section for details.
+
-When an item must be passed to a function, it can usually be in any of
-these formats.
Groups
-------
+======
+
In a number of places, there is a group table. Groups define the
properties of a thing (item, node, armor of entity, capabilities of
tool) in such a way that the engine and other mods can can interact with
the thing without actually knowing what the thing is.
-### Usage
+Usage
+-----
+
Groups are stored in a table, having the group names with keys and the
group ratings as values. For example:
+ -- Default dirt
groups = {crumbly=3, soil=1}
- -- ^ Default dirt
+ -- A more special dirt-kind of thing
groups = {crumbly=2, soil=1, level=2, outerspace=1}
- -- ^ A more special dirt-kind of thing
Groups always have a rating associated with them. If there is no
useful meaning for a rating for an enabled group, it shall be `1`.
minetest.get_item_group(itemname, groupname)
-### Groups of items
+Groups of items
+---------------
+
Groups of items can define what kind of an item it is (e.g. wool).
-### Groups of nodes
+Groups of nodes
+---------------
+
In addition to the general item things, groups are used to define whether
a node is destroyable and how long it takes to destroy by a tool.
-### Groups of entities
+Groups of entities
+------------------
+
For entities, groups are, as of now, used only for calculating damage.
The rating is the percentage of damage caused by tools with this damage group.
-See "Entity damage mechanism".
+See [Entity damage mechanism].
object.get_armor_groups() --> a group-rating table (e.g. {fleshy=100})
object.set_armor_groups({fleshy=30, cracky=80})
-### Groups of tools
+Groups of tools
+---------------
+
Groups in tools define which groups of nodes and entities they are
effective towards.
-### Groups in crafting recipes
+Groups in crafting recipes
+--------------------------
+
An example: Make meat soup from any meat, any water and any bowl:
{
recipe = {'wool:white', 'group:dye,basecolor_red'},
}
-### Special groups
+Special groups
+--------------
+
* `immortal`: Disables the group damage system for an entity
* `punch_operable`: For entities; disables the regular damage mechanism for
players punching it by hand or a non-tool item, so that it can do something
from destroyed nodes.
* `0` is something that is directly accessible at the start of gameplay
* There is no upper limit
-* `dig_immediate`: (player can always pick up node without reducing tool wear)
+* `dig_immediate`: Player can always pick up node without reducing tool wear
* `2`: the node always gets the digging time 0.5 seconds (rail, sign)
* `3`: the node always gets the digging time 0 seconds (torch)
* `disable_jump`: Player (and possibly other things) cannot jump from node
* `fall_damage_add_percent`: damage speed = `speed * (1 + value/100)`
* `bouncy`: value is bounce speed in percent
* `falling_node`: if there is no walkable block under the node it will fall
+* `float`: the node will not fall through liquids
* `attached_node`: if the node under it is not a walkable block the node will be
dropped as an item. If the node is wallmounted the wallmounted direction is
checked.
-* `soil`: saplings will grow on nodes in this group
* `connect_to_raillike`: makes nodes of raillike drawtype with same group value
connect to each other
* `slippery`: Players and items will slide on the node.
Slipperiness rises steadily with `slippery` value, starting at 1.
+* `disable_repair`: If set to 1 for a tool, it cannot be repaired using the
+ `"toolrepair"` crafting recipe
+Known damage and digging time defining groups
+---------------------------------------------
-### Known damage and digging time defining groups
* `crumbly`: dirt, sand
* `cracky`: tough but crackable stuff like stone.
* `snappy`: something that can be cut using fine tools; e.g. leaves, small
speed of a tool if the tool can dig at a faster speed than this
suggests for the hand.
-### Examples of custom groups
+Examples of custom groups
+-------------------------
+
Item groups are often used for defining, well, _groups of items_.
* `meat`: any meat-kind of a thing (rating might define the size or healing
* `weapon`: any weapon
* `heavy`: anything considerably heavy
-### Digging time calculation specifics
+Digging time calculation specifics
+----------------------------------
+
Groups such as `crumbly`, `cracky` and `snappy` are used for this
purpose. Rating is `1`, `2` or `3`. A higher rating for such a group implies
faster digging time.
cannot dig other groups; thus it is important to use a standard bunch of
groups to enable interaction with tools.
-#### Tools definition
+
+
+
+Tools
+=====
+
+Tools definition
+----------------
+
Tools define:
* Full punch interval
* Digging times
* Damage groups
-#### Full punch interval
+### Full punch interval
+
When used as a weapon, the tool will do full damage if this time is spent
between punches. If e.g. half the time is spent, the tool will do half
damage.
-#### Maximum drop level
+### Maximum drop level
+
Suggests the maximum level of node, when dug with the tool, that will drop
it's useful item. (e.g. iron ore to drop a lump of iron).
This is not automated; it is the responsibility of the node definition
to implement this.
-#### Uses
+### Uses
+
Determines how many uses the tool has when it is used for digging a node,
of this group, of the maximum level. For lower leveled nodes, the use count
is multiplied by `3^leveldiff`.
* `uses=10, leveldiff=1`: actual uses: 30
* `uses=10, leveldiff=2`: actual uses: 90
-#### Maximum level
+### Maximum level
+
Tells what is the maximum level of a node of this group that the tool will
be able to dig.
-#### Digging times
+### Digging times
+
List of digging times for different ratings of the group, for nodes of the
maximum level.
digging nodes; If the player releases LMB after digging, this delay is set to 0,
i.e. players can more quickly click the nodes away instead of holding LMB.
-#### Damage groups
-List of damage for groups of entities. See "Entity damage mechanism".
+### Damage groups
+
+List of damage for groups of entities. See [Entity damage mechanism].
-#### Example definition of the capabilities of a tool
+Example definition of the capabilities of a tool
+------------------------------------------------
tool_capabilities = {
full_punch_interval=1.5,
easy nodes to be quickly breakable.
* At `level > 2`, the node is not diggable, because it's `level > maxlevel`
+
+
+
Entity damage mechanism
------------------------
+=======================
+
Damage calculation:
damage = 0
foreach group in cap.damage_groups:
- damage += cap.damage_groups[group] * limit(actual_interval /
- cap.full_punch_interval, 0.0, 1.0)
+ damage += cap.damage_groups[group]
+ * limit(actual_interval / cap.full_punch_interval, 0.0, 1.0)
* (object.armor_groups[group] / 100.0)
-- Where object.armor_groups[group] is 0 for inexistent values
return damage
On the Lua side, every punch calls:
- entity:on_punch(puncher, time_from_last_punch, tool_capabilities, direction, damage)
+ entity:on_punch(puncher, time_from_last_punch, tool_capabilities, direction,
+ damage)
This should never be called directly, because damage is usually not handled by
the entity itself.
* If `direction` equals `nil` and `puncher` does not equal `nil`, `direction`
will be automatically filled in based on the location of `puncher`.
+
+
+
+Metadata
+========
+
Node Metadata
-------------
+
The instance of a node in the world normally only contains the three values
-mentioned in "Nodes". However, it is possible to insert extra data into a
-node. It is called "node metadata"; See `NodeMetaRef`.
+mentioned in [Nodes]. However, it is possible to insert extra data into a node.
+It is called "node metadata"; See `NodeMetaRef`.
Node metadata contains two things:
Some of the values in the key-value store are handled specially:
-* `formspec`: Defines a right-click inventory menu. See "Formspec".
+* `formspec`: Defines a right-click inventory menu. See [Formspec].
* `infotext`: Text shown on the screen when the node is pointed at
-Example stuff:
+Example:
local meta = minetest.get_meta(pos)
meta:set_string("formspec",
Item Metadata
-------------
-Item stacks can store metadata too. See `ItemStackMetaRef`.
+
+Item stacks can store metadata too. See [`ItemStackMetaRef`].
Item metadata only contains a key-value store.
* `palette_index`: If the item has a palette, this is used to get the
current color from the palette.
-Example stuff:
+Example:
local meta = stack:get_meta()
meta:set_string("key", "value")
print(dump(meta:to_table()))
+
+
+
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. This supports inventories and some of the
+typical widgets like buttons, checkboxes, text input fields, etc.
+It is a string, with a somewhat strange format.
+
+A formspec is made out of formspec elements, which includes widgets
+like buttons but also can be used to set stuff like background color.
+
+Many formspec elements have a `name`, which is a unique identifier which
+is used when the server receives user input. You must not use the name
+"quit" for formspec elements.
Spaces and newlines can be inserted between the blocks, as is used in the
examples.
+Position and size units are inventory slots, `X` and `Y` position the formspec
+element relative to the top left of the menu or container. `W` and `H` are its
+width and height values.
+Inventories with a `player:<name>` inventory location are only sent to the
+player named `<name>`.
+
+When displaying text which can contain formspec code, e.g. text set by a player,
+use `minetest.formspec_escape`.
+For coloured text you can use `minetest.colorize`.
+
WARNING: Minetest allows you to add elements to every single formspec instance
-using player:set_formspec_prepend(), which may be the reason backgrounds are
-appearing when you don't expect them to. See `no_prepend[]`
+using `player:set_formspec_prepend()`, which may be the reason backgrounds are
+appearing when you don't expect them to. See [`no_prepend[]`].
-### Examples
+Examples
+--------
-#### Chest
+### Chest
size[8,9]
list[context;main;0,0;8,4;]
list[current_player;main;0,5;8,4;]
-#### Furnace
+### Furnace
size[8,9]
list[context;fuel;2,3;1,1;]
list[context;dst;5,1;2,2;]
list[current_player;main;0,5;8,4;]
-#### Minecraft-like player inventory
+### Minecraft-like player inventory
size[8,7.5]
image[1,0.6;1,2;player.png]
list[current_player;craft;3,0;3,3;]
list[current_player;craftpreview;7,1;1,1;]
-### Elements
+Elements
+--------
+
+### `size[<W>,<H>,<fixed_size>]`
-#### `size[<W>,<H>,<fixed_size>]`
* Define the size of the menu in inventory slots
* `fixed_size`: `true`/`false` (optional)
* deprecated: `invsize[<W>,<H>;]`
-#### `position[<X>,<Y>]`
+### `position[<X>,<Y>]`
+
* Must be used after `size` element.
* Defines the position on the game window of the formspec's `anchor` point.
* For X and Y, 0.0 and 1.0 represent opposite edges of the game window,
* [1.0, 1.0] sets the position to the bottom right of the game window.
* Defaults to the center of the game window [0.5, 0.5].
-#### `anchor[<X>,<Y>]`
+### `anchor[<X>,<Y>]`
+
* Must be used after both `size` and `position` (if present) elements.
* Defines the location of the anchor point within the formspec.
* For X and Y, 0.0 and 1.0 represent opposite edges of the formspec,
* `position` and `anchor` elements need suitable values to avoid a formspec
extending off the game window due to particular game window sizes.
-#### `no_prepend[]`
+### `no_prepend[]`
+
* Must be used after the `size`, `position`, and `anchor` elements (if present).
* Disables player:set_formspec_prepend() from applying to this formspec.
-#### `container[<X>,<Y>]`
+### `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[]`
+### `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>;]`
-#### `list[<inventory location>;<list name>;<X>,<Y>;<W>,<H>;<starting item index>]`
-* Show an inventory list
+* Show an inventory list if it has been sent to the client. Nothing will
+ be shown if the inventory list is of size 0.
+
+### `list[<inventory location>;<list name>;<X>,<Y>;<W>,<H>;<starting item index>]`
+
+* Show an inventory list if it has been sent to the client. Nothing will
+ be shown if the inventory list is of size 0.
+
+### `listring[<inventory location>;<list name>]`
-#### `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[]`
+### `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>]`
+### `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>]`
+### `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>]`
+### `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>]`
+### `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>]`
+### `tooltip[<X>,<Y>;<W>,<H>;<tooltip_text>;<bgcolor>;<fontcolor>]`
+
+* Adds tooltip for an area. Other tooltips will take priority when present.
+* `<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>]`
+### `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>]`
+### `bgcolor[<color>;<fullscreen>]`
+
* Sets background color of formspec as `ColorString`
-* If `true`, the background color is drawn fullscreen (does not effect the size
+* If `true`, the background color is drawn fullscreen (does not affect the size
of the formspec).
-#### `background[<X>,<Y>;<W>,<H>;<texture name>]`
+### `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>]`
+### `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
+* If `auto_clip` is `true`, the background is clipped to the formspec size
(`x` and `y` are used as offset values, `w` and `h` are ignored)
-#### `pwdfield[<X>,<Y>;<W>,<H>;<name>;<label>]`
+### `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
+* Fields are a set height, but will be vertically centred on `H`
* `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
+* See `field_close_on_enter` to stop enter closing the formspec
+
+### `field[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]`
-#### `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
+* Fields are a set height, but will be vertically centred on `H`
* `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
+ * `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>]`
+### `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.
* 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>]`
+### `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>]`
+### `textarea[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]`
+
* Same as fields above, but with multi-line input
-* if the text overflows a vertical scrollbar is added
-* if the name is empty the textarea is readonly, the label is not displayed.
+* If the text overflows, a vertical scrollbar is added.
+* If the name is empty, the textarea is read-only and
+ the background is not shown, which corresponds to a multi-line label.
-#### `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
+### `label[<X>,<Y>;<label>]`
+
+* The label formspec element displays the text set in `label`
+ at the specified position.
+* The text is displayed directly without automatic line breaking,
+ so label should not be used for big text chunks.
+
+### `vertlabel[<X>,<Y>;<label>]`
-#### `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>]`
+### `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
-* Fixed button height. It will be vertically centred on `h`
+* Fixed button height. It will be vertically centred on `H`
* `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
+### `image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>]`
+
* `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
+### `image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>;<noclip>;<drawborder>;<pressed texture name>]`
+
* `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
+### `item_image_button[<X>,<Y>;<W>,<H>;<item name>;<name>;<label>]`
+
+* `item name` is the registered name of an item/node
+* The item description will be used as the tooltip. This can be overridden with
+ a tooltip element.
+
+### `button_exit[<X>,<Y>;<W>,<H>;<name>;<label>]`
-#### `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>]`
+### `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>]`
+### `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>]`
+### `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
* Index to be selected within textlist
* `true`/`false`: draw transparent background
* See also `minetest.explode_textlist_event`
- (main menu: `engine.explode_textlist_event`).
+ (main menu: `core.explode_textlist_event`).
+
+### `tabheader[<X>,<Y>;<name>;<caption 1>,<caption 2>,...,<caption n>;<current_tab>;<transparent>;<draw_border>]`
-#### `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`
+### `box[<X>,<Y>;<W>,<H>;<color>]`
+
+* Simple colored box
+* `color` is color specified as a `ColorString`.
+ If the alpha component is left blank, the box will be semitransparent.
+
+### `dropdown[<X>,<Y>;<W>;<name>;<item 1>,<item 2>, ...,<item n>;<selected idx>]`
-#### `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)
* Items to be shown in dropdown
* Index of currently selected dropdown item
-#### `checkbox[<X>,<Y>;<name>;<label>;<selected>]`
+### `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>]`
+### `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`).
+ (main menu: `core.explode_scrollbar_event`).
+
+### `table[<X>,<Y>;<W>,<H>;<name>;<cell 1>,<cell 2>,...,<cell n>;<selected idx>]`
-#### `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`).
+ (main menu: `core.explode_table_event`).
+
+### `tableoptions[<opt 1>;<opt 2>;...]`
-#### `tableoptions[<opt 1>;<opt 2>;...]`
* Sets options for `table[]`
* `color=#RRGGBB`
* default text color (`ColorString`), defaults to `#FFFFFF`
* 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>;...]`
+### `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
**Note**: do _not_ use a element name starting with `key_`; those names are
reserved to pass key press events to formspec!
+
+
+
+Inventory
+=========
+
Inventory locations
-------------------
+
* `"context"`: Selected node metadata (deprecated: `"current_name"`)
* `"current_player"`: Player to whom the menu is shown
* `"player:<name>"`: Any player
Player Inventory lists
----------------------
+
* `main`: list containing the default inventory
* `craft`: list containing the craft input
-* `craftpreview`: list containing the craft output
+* `craftpreview`: list containing the craft prediction
+* `craftresult`: list containing the crafted output
* `hand`: list containing an override for the empty hand
+ * Is not created automatically, use `InvRef:set_size`
+
+
+
+
+Colors
+======
`ColorString`
-------------
+
`#RGB` defines a color in hexadecimal format.
`#RGBA` defines a color in hexadecimal format and alpha channel.
`ColorSpec`
-----------
-A ColorSpec specifies a 32-bit color. It can be written in either:
-table form, each element ranging from 0..255 (a, if absent, defaults to 255):
- `colorspec = {a=255, r=0, g=255, b=0}`
-numerical form, the raw integer value of an ARGB8 quad:
- `colorspec = 0xFF00FF00`
-or string form, a ColorString (defined above):
- `colorspec = "green"`
+
+A ColorSpec specifies a 32-bit color. It can be written in any of the following
+forms:
+
+* table form: Each element ranging from 0..255 (a, if absent, defaults to 255):
+ * `colorspec = {a=255, r=0, g=255, b=0}`
+* numerical form: The raw integer value of an ARGB8 quad:
+ * `colorspec = 0xFF00FF00`
+* string form: A ColorString (defined above):
+ * `colorspec = "green"`
+
+
+
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:
* `minetest.strip_colors(str)`
* Removes all color escape sequences.
+
+
+
Spatial Vectors
----------------
+===============
+A spatial vector is similar to a position, but instead using
+absolute world coordinates, it uses *relative* coordinates, relative to
+no particular point.
+
+Internally, it is implemented as a table with the 3 fields
+`x`, `y` and `z`. Example: `{x = 0, y = 1, z = 0}`.
+
For the following functions, `v`, `v1`, `v2` are vectors,
`p1`, `p2` are positions:
* Returns a boolean, `true` if the vectors are identical.
* `vector.sort(v1, v2)`:
* Returns in order minp, maxp vectors of the cuboid defined by `v1`, `v2`.
+* `vector.angle(v1, v2)`:
+ * Returns the angle between `v1` and `v2` in radians.
For the following functions `x` can be either a vector or a number:
* `vector.add(v, x)`:
* Returns a vector.
+ * If `x` is a vector: Returns the sum of `v` and `x`.
+ * If `x` is a number: Adds `x` to each component of `v`.
* `vector.subtract(v, x)`:
* Returns a vector.
+ * If `x` is a vector: Returns the difference of `v` subtracted by `x`.
+ * If `x` is a number: Subtracts `x` from each component of `v`.
* `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)`: returns a string which makes `obj`
human-readable, handles reference loops.
* `obj`: arbitrary variable
* tolerance: number, default: `0.0`
* If the absolute value of `x` is within the `tolerance` or `x` is NaN,
`0` is returned.
+* `math.factorial(x)`: returns the factorial of `x`
* `string.split(str, separator, include_empty, max_splits, sep_is_pattern)`
* `separator`: string, default: `","`
* `include_empty`: boolean, default: `false`
- * `max_splits`: number, if it's positive, splits aren't limited,
+ * `max_splits`: number, if it's negative, splits aren't limited,
default: `-1`
* `sep_is_pattern`: boolean, it specifies whether separator is a plain
string or a pattern (regex), default: `false`
in formspecs.
* `minetest.is_yes(arg)`
* returns true if passed 'y', 'yes', 'true' or a number that isn't zero.
+* `minetest.is_nan(arg)`
+ * returns true when the passed number represents NaN.
* `minetest.get_us_time()`
* returns time with microsecond precision. May not return wall time.
* `table.copy(table)`: returns a table
* returns a deep copy of `table`
+* `table.indexof(list, val)`: returns the smallest numerical index containing
+ the value `val` in the table `list`. Non-numerical indices are ignored.
+ If `val` could not be found, `-1` is returned. `list` must not have
+ negative indices.
+* `table.insert_all(table, other_table)`:
+ * Appends all values in `other_table` to `table` - uses `#table + 1` to
+ find new indices.
* `minetest.pointed_thing_to_face_pos(placer, pointed_thing)`: returns a
position.
* returns the exact position on the surface of a pointed node
+* `minetest.get_dig_params(groups, tool_capabilities)`: Simulates a tool
+ that digs a node.
+ Returns a table with the following fields:
+ * `diggable`: `true` if node can be dug, `false` otherwise.
+ * `time`: Time it would take to dig the node.
+ * `wear`: How much wear would be added to the tool.
+ `time` and `wear` are meaningless if node's not diggable
+ Parameters:
+ * `groups`: Table of the node groups of the node that would be dug
+ * `tool_capabilities`: Tool capabilities table of the tool
+* `minetest.get_hit_params(groups, tool_capabilities [, time_from_last_punch])`:
+ Simulates an item that punches an object.
+ Returns a table with the following fields:
+ * `hp`: How much damage the punch would cause.
+ * `wear`: How much wear would be added to the tool.
+ Parameters:
+ * `groups`: Damage groups of the object
+ * `tool_capabilities`: Tool capabilities table of the item
+ * `time_from_last_punch`: time in seconds since last punch action
+
+
+
Translations
-------------
+============
Texts can be translated client-side with the help of `minetest.translate` and
translation files.
-### Translating a string
+Translating a string
+--------------------
+
Two functions are provided to translate strings: `minetest.translate` and
`minetest.get_translator`.
It is intended to be used in the following way, so that it avoids verbose
repetitions of `minetest.translate`:
- local S = minetest.get_translator(textdomain)
- S(str, ...)
+ local S = minetest.get_translator(textdomain)
+ S(str, ...)
As an extra commodity, if `textdomain` is nil, it is assumed to be "" instead.
For instance, suppose we want to translate "@1 Wool" with "@1" being replaced
by the translation of "Red". We can do the following:
- local S = minetest.get_translator()
- S("@1 Wool", S("Red"))
+ local S = minetest.get_translator()
+ S("@1 Wool", S("Red"))
This will be displayed as "Red Wool" on old clients and on clients that do
not have localization enabled. However, if we have for instance a translation
file named `wool.fr.tr` containing the following:
- @1 Wool=Laine @1
- Red=Rouge
+ @1 Wool=Laine @1
+ Red=Rouge
this will be displayed as "Laine Rouge" on clients with a French locale.
-### Operations on translated strings
+Operations on translated strings
+--------------------------------
The output of `minetest.translate` is a string, with escape sequences adding
additional information to that string so that it can be translated on the
sentences by breaking them into parts; arguments should be used instead), and
operations such as `minetest.colorize` which are also concatenation.
-### Translation file format
+Translation file format
+-----------------------
+
A translation file has the suffix `.[lang].tr`, where `[lang]` is the language
-it corresponds to.
+it corresponds to. It must be put into the `locale` subdirectory of the mod.
The file should be a text file, with the following format:
* Lines beginning with `# textdomain:` (the space is significant) can be used
* All other empty lines or lines beginning with `#` are ignored.
* Other lines should be in the format `original=translated`. Both `original`
and `translated` can contain escape sequences beginning with `@` to insert
- arguments, literal `@`, `=` or newline (See ### Escapes below).
+ arguments, literal `@`, `=` or newline (See [Escapes] below).
There must be no extraneous whitespace around the `=` or at the beginning or
the end of the line.
-### Escapes
+Escapes
+-------
+
Strings that need to be translated can contain several escapes, preceded by `@`.
* `@@` acts as a literal `@`.
* `@n`, where `n` is a digit between 1 and 9, is an argument for the translated
- string that will be inlined when translation. Due to how translations are
+ string that will be inlined when translated. Due to how translations are
implemented, the original translation string **must** have its arguments in
increasing order, without gaps or repetitions, starting from 1.
* `@=` acts as a literal `=`. It is not required in strings given to
`minetest.translate`, but is in translation files.
* `@n` acts as a literal newline as well.
-`minetest` namespace reference
-------------------------------
-### Utilities
-* `minetest.get_current_modname()`: returns the currently loading mod's name,
- when loading a mod.
-* `minetest.get_modpath(modname)`: returns e.g.
- `"/home/user/.minetest/usermods/modname"`.
- * Useful for loading additional `.lua` modules or static data from mod
-* `minetest.get_modnames()`: returns a list of installed mods
- * Return a list of installed mods, sorted alphabetically
-* `minetest.get_worldpath()`: returns e.g. `"/home/user/.minetest/world"`
- * Useful for storing custom data
-* `minetest.is_singleplayer()`
-* `minetest.features`: Table containing API feature flags
- {
- glasslike_framed = true,
- nodebox_as_selectionbox = true,
- chat_send_player_param3 = true,
- get_all_craft_recipes_works = true,
- use_texture_alpha = true,
- -- ^ The transparency channel of textures can optionally be used on nodes
- no_legacy_abms = true,
- -- ^ Tree and grass ABMs are no longer done from C++
- texture_names_parens = true,
- -- ^ Texture grouping is possible using parentheses
- area_store_custom_ids = true,
- -- ^ Unique Area ID for AreaStore:insert_area
- add_entity_with_staticdata = true,
- -- ^ add_entity supports passing initial staticdata to on_activate
- no_chat_message_prediction = true,
- -- ^ Chat messages are no longer predicted
- object_use_texture_alpha = true
- -- ^ The transparency channel of textures can optionally be used on
- -- objects (ie: players and lua entities)
- }
-* `minetest.has_feature(arg)`: returns `boolean, missing_features`
- * `arg`: string or table in format `{foo=true, bar=true}`
- * `missing_features`: `{foo=true, bar=true}`
-* `minetest.get_player_information(player_name)`:
- * Returns a table containing information about a player.
- Example return value:
-
- {
- address = "127.0.0.1", -- IP address of client
- ip_version = 4, -- IPv4 / IPv6
- min_rtt = 0.01, -- minimum round trip time
- max_rtt = 0.2, -- maximum round trip time
- avg_rtt = 0.02, -- average round trip time
- min_jitter = 0.01, -- minimum packet time jitter
- max_jitter = 0.5, -- maximum packet time jitter
- avg_jitter = 0.03, -- average packet time jitter
- connection_uptime = 200, -- seconds since client connected
- protocol_version = 32, -- protocol version used by client
- -- following information is available on debug build only!!!
- -- DO NOT USE IN MODS
- --ser_vers = 26, -- serialization version used by client
- --major = 0, -- major version number
- --minor = 4, -- minor version number
- --patch = 10, -- patch version number
- --vers_string = "0.4.9-git", -- full version string
- --state = "Active" -- current client state
- }
-* `minetest.mkdir(path)`: returns success.
- * Creates a directory specified by `path`, creating parent directories
- if they don't exist.
-* `minetest.get_dir_list(path, [is_dir])`: returns list of entry names
- * is_dir is one of:
- * nil: return all entries,
- * true: return only subdirectory names, or
- * false: return only file names.
-* `minetest.safe_file_write(path, content)`: returns boolean indicating success
- * Replaces contents of file at path with new contents in a safe (atomic)
- way. Use this instead of below code when writing e.g. database files:
- `local f = io.open(path, "wb"); f:write(content); f:close()`
-* `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 verifiable. 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.check_for_falling then ... end`.
-* `minetest.sha1(data, [raw])`: returns the sha1 hash of data
- * `data`: string of data to hash
- * `raw`: return raw bytes instead of hex digits, default: false
+Perlin noise
+============
-### 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"`.
+Perlin noise creates a continuously-varying value depending on the input values.
+Usually in Minetest the input values are either 2D or 3D co-ordinates in nodes.
+The result is used during map generation to create the terrain shape, vary heat
+and humidity to distribute biomes, vary the density of decorations or vary the
+structure of ores.
-### Registration functions
-Call these functions only at load time!
+Structure of perlin noise
+-------------------------
-* `minetest.register_entity(name, prototype table)`
-* `minetest.register_abm(abm definition)`
-* `minetest.register_lbm(lbm definition)`
-* `minetest.register_node(name, node definition)`
-* `minetest.register_tool(name, item definition)`
-* `minetest.register_craftitem(name, item definition)`
-* `minetest.unregister_item(name)`
-* `minetest.register_alias(name, convert_to)`
- * Also use this to set the 'mapgen aliases' needed in a game for the core
- * mapgens. See 'Mapgen aliases' section above.
-* `minetest.register_alias_force(name, convert_to)`
-* `minetest.register_craft(recipe)`
- * Check recipe table syntax for different types below.
-* `minetest.clear_craft(recipe)`
- * Will erase existing craft based either on output item or on input recipe.
- * Specify either output or input only. If you specify both, input will be
- ignored. For input use the same recipe table syntax as for
- `minetest.register_craft(recipe)`. For output specify only the item,
- without a quantity.
- * If no erase candidate could be found, Lua exception will be thrown.
- * **Warning**! The type field ("shaped","cooking" or any other) will be
- ignored if the recipe contains output. Erasing is then done independently
- from the crafting method.
-* `minetest.register_ore(ore definition)`
-* `minetest.register_biome(biome definition)`
-* `minetest.register_decoration(decoration definition)`
-* `minetest.override_item(name, redefinition)`
- * Overrides fields of an item registered with register_node/tool/craftitem.
- * Note: Item must already be defined, (opt)depend on the mod defining it.
- * Example: `minetest.override_item("default:mese", {light_source=LIGHT_MAX})`
-* `minetest.clear_registered_ores()`
-* `minetest.clear_registered_biomes()`
-* `minetest.clear_registered_decorations()`
+An 'octave' is a simple noise generator that outputs a value between -1 and 1.
+The smooth wavy noise it generates has a single characteristic scale, almost
+like a 'wavelength', so on its own does not create fine detail.
+Due to this perlin noise combines several octaves to create variation on
+multiple scales. Each additional octave has a smaller 'wavelength' than the
+previous.
-### Global callback registration functions
-Call these functions only at load time!
+This combination results in noise varying very roughly between -2.0 and 2.0 and
+with an average value of 0.0, so `scale` and `offset` are then used to multiply
+and offset the noise variation.
-* `minetest.register_globalstep(func(dtime))`
- * Called every server step, usually interval of 0.1s
-* `minetest.register_on_shutdown(func())`
- * Called before server shutdown
- * **Warning**: If the server 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_placenode(func(pos, newnode, placer, oldnode, itemstack, pointed_thing))`
- * Called when a node has been placed
- * If return `true` no item is taken from `itemstack`
- * `placer` may be any valid ObjectRef or nil.
- * **Not recommended**; use `on_construct` or `after_place_node` in node
- definition whenever possible.
-* `minetest.register_on_dignode(func(pos, oldnode, digger))`
- * Called when a node has been dug.
- * **Not recommended**; Use `on_destruct` or `after_dig_node` in node
- definition whenever possible.
-* `minetest.register_on_punchnode(func(pos, node, puncher, pointed_thing))`
- * Called when a node is punched
-* `minetest.register_on_generated(func(minp, maxp, blockseed))`
- * Called after generating a piece of world. Modifying nodes inside the area
- is a bit faster than usually.
-* `minetest.register_on_newplayer(func(ObjectRef))`
- * Called after a new player has been created
-* `minetest.register_on_punchplayer(func(player, hitter, time_from_last_punch, tool_capabilities, dir, damage))`
- * Called when a player is punched
- * `player` - ObjectRef - Player that was punched
- * `hitter` - ObjectRef - Player that hit
- * `time_from_last_punch`: Meant for disallowing spamming of clicks
- (can be nil).
- * `tool_capabilities`: capability table of used tool (can be nil)
- * `dir`: unit vector of direction of punch. Always defined. Points from
- the puncher to the punched.
- * `damage` - number that represents the damage calculated by the engine
- * should return `true` to prevent the default damage mechanism
-* `minetest.register_on_player_hpchange(func(player, hp_change, reason), modifier)`
- * Called when the player gets damaged or healed
- * `player`: ObjectRef of the player
- * `hp_change`: the amount of change. Negative when it is damage.
- * `reason`: a PlayerHPChangeReason table.
- * The `type` field will have one of the following values:
- * `set_hp` - A mod or the engine called `set_hp` without
- giving a type - use this for custom damage types.
- * `punch` - Was punched. `reason.object` will hold the puncher, or nil if none.
- * `fall`
- * `node_damage` - damage_per_second from a neighbouring node.
- * `drown`
- * `respawn`
- * Any of the above types may have additional fields from mods.
- * `reason.from` will be `mod` or `engine`.
- * `modifier`: when true, the function should return the actual `hp_change`.
- Note: modifiers only get a temporary hp_change that can be modified by later modifiers.
- modifiers can return true as a second argument to stop the execution of further functions.
- Non-modifiers receive the final hp change calculated by the modifiers.
-* `minetest.register_on_dieplayer(func(ObjectRef, reason))`
- * Called when a player dies
- * `reason`: a PlayerHPChangeReason table, see register_on_player_hpchange
-* `minetest.register_on_respawnplayer(func(ObjectRef))`
- * Called when player is to be respawned
- * Called _before_ repositioning of player occurs
- * return true in func to disable regular player placement
-* `minetest.register_on_prejoinplayer(func(name, ip))`
- * Called before a player joins the game
- * If it returns a string, the player is disconnected with that string as
- reason.
-* `minetest.register_on_joinplayer(func(ObjectRef))`
- * Called when a player joins the game
-* `minetest.register_on_leaveplayer(func(ObjectRef, timed_out))`
- * Called when a player leaves the game
- * `timed_out`: True for timeout, false for other reasons.
-* `minetest.register_on_auth_fail(func(name, ip))`
- * Called when a client attempts to log into an account but supplies the
- wrong password.
- * `ip`: The IP address of the client.
- * `name`: The account the client attempted to log into.
-* `minetest.register_on_cheat(func(ObjectRef, cheat))`
- * Called when a player cheats
- * `cheat`: `{type=<cheat_type>}`, where `<cheat_type>` is one of:
+The final perlin noise variation is created as follows:
+
+noise = offset + scale * (octave1 +
+ octave2 * persistence +
+ octave3 * persistence ^ 2 +
+ octave4 * persistence ^ 3 +
+ ...)
+
+Noise Parameters
+----------------
+
+Noise Parameters are commonly called `NoiseParams`.
+
+### `offset`
+
+After the multiplication by `scale` this is added to the result and is the final
+step in creating the noise value.
+Can be positive or negative.
+
+### `scale`
+
+Once all octaves have been combined, the result is multiplied by this.
+Can be positive or negative.
+
+### `spread`
+
+For octave1, this is roughly the change of input value needed for a very large
+variation in the noise value generated by octave1. It is almost like a
+'wavelength' for the wavy noise variation.
+Each additional octave has a 'wavelength' that is smaller than the previous
+octave, to create finer detail. `spread` will therefore roughly be the typical
+size of the largest structures in the final noise variation.
+
+`spread` is a vector with values for x, y, z to allow the noise variation to be
+stretched or compressed in the desired axes.
+Values are positive numbers.
+
+### `seed`
+
+This is a whole number that determines the entire pattern of the noise
+variation. Altering it enables different noise patterns to be created.
+With other parameters equal, different seeds produce different noise patterns
+and identical seeds produce identical noise patterns.
+
+For this parameter you can randomly choose any whole number. Usually it is
+preferable for this to be different from other seeds, but sometimes it is useful
+to be able to create identical noise patterns.
+
+When used in mapgen this is actually a 'seed offset', it is added to the
+'world seed' to create the seed used by the noise, to ensure the noise has a
+different pattern in different worlds.
+
+### `octaves`
+
+The number of simple noise generators that are combined.
+A whole number, 1 or more.
+Each additional octave adds finer detail to the noise but also increases the
+noise calculation load.
+3 is a typical minimum for a high quality, complex and natural-looking noise
+variation. 1 octave has a slight 'gridlike' appearence.
+
+Choose the number of octaves according to the `spread` and `lacunarity`, and the
+size of the finest detail you require. For example:
+if `spread` is 512 nodes, `lacunarity` is 2.0 and finest detail required is 16
+nodes, octaves will be 6 because the 'wavelengths' of the octaves will be
+512, 256, 128, 64, 32, 16 nodes.
+Warning: If the 'wavelength' of any octave falls below 1 an error will occur.
+
+### `persistence`
+
+Each additional octave has an amplitude that is the amplitude of the previous
+octave multiplied by `persistence`, to reduce the amplitude of finer details,
+as is often helpful and natural to do so.
+Since this controls the balance of fine detail to large-scale detail
+`persistence` can be thought of as the 'roughness' of the noise.
+
+A positive or negative non-zero number, often between 0.3 and 1.0.
+A common medium value is 0.5, such that each octave has half the amplitude of
+the previous octave.
+This may need to be tuned when altering `lacunarity`; when doing so consider
+that a common medium value is 1 / lacunarity.
+
+### `lacunarity`
+
+Each additional octave has a 'wavelength' that is the 'wavelength' of the
+previous octave multiplied by 1 / lacunarity, to create finer detail.
+'lacunarity' is often 2.0 so 'wavelength' often halves per octave.
+
+A positive number no smaller than 1.0.
+Values below 2.0 create higher quality noise at the expense of requiring more
+octaves to cover a paticular range of 'wavelengths'.
+
+### `flags`
+
+Leave this field unset for no special handling.
+Currently supported are `defaults`, `eased` and `absvalue`:
+
+#### `defaults`
+
+Specify this if you would like to keep auto-selection of eased/not-eased while
+specifying some other flags.
+
+#### `eased`
+
+Maps noise gradient values onto a quintic S-curve before performing
+interpolation. This results in smooth, rolling noise.
+Disable this (`noeased`) for sharp-looking noise with a slightly gridded
+appearence.
+If no flags are specified (or defaults is), 2D noise is eased and 3D noise is
+not eased.
+Easing a 3D noise significantly increases the noise calculation load, so use
+with restraint.
+
+#### `absvalue`
+
+The absolute value of each octave's noise variation is used when combining the
+octaves. The final perlin noise variation is created as follows:
+
+noise = offset + scale * (abs(octave1) +
+ abs(octave2) * persistence +
+ abs(octave3) * persistence ^ 2 +
+ abs(octave4) * persistence ^ 3 +
+ ...)
+
+### Format example
+
+For 2D or 3D perlin noise or perlin noise maps:
+
+ np_terrain = {
+ offset = 0,
+ scale = 1,
+ spread = {x = 500, y = 500, z = 500},
+ seed = 571347,
+ octaves = 5,
+ persist = 0.63,
+ lacunarity = 2.0,
+ flags = "defaults, absvalue",
+ }
+
+For 2D noise the Z component of `spread` is still defined but is ignored.
+A single noise parameter table can be used for 2D or 3D noise.
+
+
+
+
+Ores
+====
+
+Ore types
+---------
+
+These tell in what manner the ore is generated.
+
+All default ores are of the uniformly-distributed scatter type.
+
+### `scatter`
+
+Randomly chooses a location and generates a cluster of ore.
+
+If `noise_params` is specified, the ore will be placed if the 3D perlin noise
+at that point is greater than the `noise_threshold`, giving the ability to
+create a non-equal distribution of ore.
+
+### `sheet`
+
+Creates a sheet of ore in a blob shape according to the 2D perlin noise
+described by `noise_params` and `noise_threshold`. This is essentially an
+improved version of the so-called "stratus" ore seen in some unofficial mods.
+
+This sheet consists of vertical columns of uniform randomly distributed height,
+varying between the inclusive range `column_height_min` and `column_height_max`.
+If `column_height_min` is not specified, this parameter defaults to 1.
+If `column_height_max` is not specified, this parameter defaults to `clust_size`
+for reverse compatibility. New code should prefer `column_height_max`.
+
+The `column_midpoint_factor` parameter controls the position of the column at
+which ore emanates from.
+If 1, columns grow upward. If 0, columns grow downward. If 0.5, columns grow
+equally starting from each direction.
+`column_midpoint_factor` is a decimal number ranging in value from 0 to 1. If
+this parameter is not specified, the default is 0.5.
+
+The ore parameters `clust_scarcity` and `clust_num_ores` are ignored for this
+ore type.
+
+### `puff`
+
+Creates a sheet of ore in a cloud-like puff shape.
+
+As with the `sheet` ore type, the size and shape of puffs are described by
+`noise_params` and `noise_threshold` and are placed at random vertical
+positions within the currently generated chunk.
+
+The vertical top and bottom displacement of each puff are determined by the
+noise parameters `np_puff_top` and `np_puff_bottom`, respectively.
+
+### `blob`
+
+Creates a deformed sphere of ore according to 3d perlin noise described by
+`noise_params`. The maximum size of the blob is `clust_size`, and
+`clust_scarcity` has the same meaning as with the `scatter` type.
+
+### `vein`
+
+Creates veins of ore varying in density by according to the intersection of two
+instances of 3d perlin noise with different seeds, both described by
+`noise_params`.
+
+`random_factor` varies the influence random chance has on placement of an ore
+inside the vein, which is `1` by default. Note that modifying this parameter
+may require adjusting `noise_threshold`.
+
+The parameters `clust_scarcity`, `clust_num_ores`, and `clust_size` are ignored
+by this ore type.
+
+This ore type is difficult to control since it is sensitive to small changes.
+The following is a decent set of parameters to work from:
+
+ noise_params = {
+ offset = 0,
+ scale = 3,
+ spread = {x=200, y=200, z=200},
+ seed = 5390,
+ octaves = 4,
+ persist = 0.5,
+ lacunarity = 2.0,
+ flags = "eased",
+ },
+ noise_threshold = 1.6
+
+**WARNING**: Use this ore type *very* sparingly since it is ~200x more
+computationally expensive than any other ore.
+
+### `stratum`
+
+Creates a single undulating ore stratum that is continuous across mapchunk
+borders and horizontally spans the world.
+
+The 2D perlin noise described by `noise_params` defines the Y co-ordinate of
+the stratum midpoint. The 2D perlin noise described by `np_stratum_thickness`
+defines the stratum's vertical thickness (in units of nodes). Due to being
+continuous across mapchunk borders the stratum's vertical thickness is
+unlimited.
+
+If the noise parameter `noise_params` is omitted the ore will occur from y_min
+to y_max in a simple horizontal stratum.
+
+A parameter `stratum_thickness` can be provided instead of the noise parameter
+`np_stratum_thickness`, to create a constant thickness.
+
+Leaving out one or both noise parameters makes the ore generation less
+intensive, useful when adding multiple strata.
+
+`y_min` and `y_max` define the limits of the ore generation and for performance
+reasons should be set as close together as possible but without clipping the
+stratum's Y variation.
+
+Each node in the stratum has a 1-in-`clust_scarcity` chance of being ore, so a
+solid-ore stratum would require a `clust_scarcity` of 1.
+
+The parameters `clust_num_ores`, `clust_size`, `noise_threshold` and
+`random_factor` are ignored by this ore type.
+
+Ore attributes
+--------------
+
+See section [Flag Specifier Format].
+
+Currently supported flags:
+`puff_cliffs`, `puff_additive_composition`.
+
+### `puff_cliffs`
+
+If set, puff ore generation will not taper down large differences in
+displacement when approaching the edge of a puff. This flag has no effect for
+ore types other than `puff`.
+
+### `puff_additive_composition`
+
+By default, when noise described by `np_puff_top` or `np_puff_bottom` results
+in a negative displacement, the sub-column at that point is not generated. With
+this attribute set, puff ore generation will instead generate the absolute
+difference in noise displacement values. This flag has no effect for ore types
+other than `puff`.
+
+
+
+
+Decoration types
+================
+
+The varying types of decorations that can be placed.
+
+`simple`
+--------
+
+Creates a 1 times `H` times 1 column of a specified node (or a random node from
+a list, if a decoration list is specified). Can specify a certain node it must
+spawn next to, such as water or lava, for example. Can also generate a
+decoration of random height between a specified lower and upper bound.
+This type of decoration is intended for placement of grass, flowers, cacti,
+papyri, waterlilies and so on.
+
+`schematic`
+-----------
+
+Copies a box of `MapNodes` from a specified schematic file (or raw description).
+Can specify a probability of a node randomly appearing when placed.
+This decoration type is intended to be used for multi-node sized discrete
+structures, such as trees, cave spikes, rocks, and so on.
+
+
+
+
+Schematics
+==========
+
+Schematic specifier
+--------------------
+
+A schematic specifier identifies a schematic by either a filename to a
+Minetest Schematic file (`.mts`) or through raw data supplied through Lua,
+in the form of a table. This table specifies the following fields:
+
+* The `size` field is a 3D vector containing the dimensions of the provided
+ schematic. (required field)
+* The `yslice_prob` field is a table of {ypos, prob} slice tables. A slice table
+ sets the probability of a particular horizontal slice of the schematic being
+ placed. (optional field)
+ `ypos` = 0 for the lowest horizontal slice of a schematic.
+ The default of `prob` is 255.
+* The `data` field is a flat table of MapNode tables making up the schematic,
+ in the order of `[z [y [x]]]`. (required field)
+ Each MapNode table contains:
+ * `name`: the name of the map node to place (required)
+ * `prob` (alias `param1`): the probability of this node being placed
+ (default: 255)
+ * `param2`: the raw param2 value of the node being placed onto the map
+ (default: 0)
+ * `force_place`: boolean representing if the node should forcibly overwrite
+ any previous contents (default: false)
+
+About probability values:
+
+* A probability value of `0` or `1` means that node will never appear
+ (0% chance).
+* A probability value of `254` or `255` means the node will always appear
+ (100% chance).
+* If the probability value `p` is greater than `1`, then there is a
+ `(p / 256 * 100)` percent chance that node will appear when the schematic is
+ placed on the map.
+
+Schematic attributes
+--------------------
+
+See section [Flag Specifier Format].
+
+Currently supported flags: `place_center_x`, `place_center_y`, `place_center_z`,
+ `force_placement`.
+
+* `place_center_x`: Placement of this decoration is centered along the X axis.
+* `place_center_y`: Placement of this decoration is centered along the Y axis.
+* `place_center_z`: Placement of this decoration is centered along the Z axis.
+* `force_placement`: Schematic nodes other than "ignore" will replace existing
+ nodes.
+
+
+
+
+Lua Voxel Manipulator
+=====================
+
+About VoxelManip
+----------------
+
+VoxelManip is a scripting interface to the internal 'Map Voxel Manipulator'
+facility. The purpose of this object is for fast, low-level, bulk access to
+reading and writing Map content. As such, setting map nodes through VoxelManip
+will lack many of the higher level features and concepts you may be used to
+with other methods of setting nodes. For example, nodes will not have their
+construction and destruction callbacks run, and no rollback information is
+logged.
+
+It is important to note that VoxelManip is designed for speed, and *not* ease
+of use or flexibility. If your mod requires a map manipulation facility that
+will handle 100% of all edge cases, or the use of high level node placement
+features, perhaps `minetest.set_node()` is better suited for the job.
+
+In addition, VoxelManip might not be faster, or could even be slower, for your
+specific use case. VoxelManip is most effective when setting large areas of map
+at once - for example, if only setting a 3x3x3 node area, a
+`minetest.set_node()` loop may be more optimal. Always profile code using both
+methods of map manipulation to determine which is most appropriate for your
+usage.
+
+A recent simple test of setting cubic areas showed that `minetest.set_node()`
+is faster than a VoxelManip for a 3x3x3 node cube or smaller.
+
+Using VoxelManip
+----------------
+
+A VoxelManip object can be created any time using either:
+`VoxelManip([p1, p2])`, or `minetest.get_voxel_manip([p1, p2])`.
+
+If the optional position parameters are present for either of these routines,
+the specified region will be pre-loaded into the VoxelManip object on creation.
+Otherwise, the area of map you wish to manipulate must first be loaded into the
+VoxelManip object using `VoxelManip:read_from_map()`.
+
+Note that `VoxelManip:read_from_map()` returns two position vectors. The region
+formed by these positions indicate the minimum and maximum (respectively)
+positions of the area actually loaded in the VoxelManip, which may be larger
+than the area requested. For convenience, the loaded area coordinates can also
+be queried any time after loading map data with `VoxelManip:get_emerged_area()`.
+
+Now that the VoxelManip object is populated with map data, your mod can fetch a
+copy of this data using either of two methods. `VoxelManip:get_node_at()`,
+which retrieves an individual node in a MapNode formatted table at the position
+requested is the simplest method to use, but also the slowest.
+
+Nodes in a VoxelManip object may also be read in bulk to a flat array table
+using:
+
+* `VoxelManip:get_data()` for node content (in Content ID form, see section
+ [Content IDs]),
+* `VoxelManip:get_light_data()` for node light levels, and
+* `VoxelManip:get_param2_data()` for the node type-dependent "param2" values.
+
+See section [Flat array format] for more details.
+
+It is very important to understand that the tables returned by any of the above
+three functions represent a snapshot of the VoxelManip's internal state at the
+time of the call. This copy of the data will not magically update itself if
+another function modifies the internal VoxelManip state.
+Any functions that modify a VoxelManip's contents work on the VoxelManip's
+internal state unless otherwise explicitly stated.
+
+Once the bulk data has been edited to your liking, the internal VoxelManip
+state can be set using:
+
+* `VoxelManip:set_data()` for node content (in Content ID form, see section
+ [Content IDs]),
+* `VoxelManip:set_light_data()` for node light levels, and
+* `VoxelManip:set_param2_data()` for the node type-dependent `param2` values.
+
+The parameter to each of the above three functions can use any table at all in
+the same flat array format as produced by `get_data()` etc. and is not required
+to be a table retrieved from `get_data()`.
+
+Once the internal VoxelManip state has been modified to your liking, the
+changes can be committed back to the map by calling `VoxelManip:write_to_map()`
+
+### Flat array format
+
+Let
+ `Nx = p2.X - p1.X + 1`,
+ `Ny = p2.Y - p1.Y + 1`, and
+ `Nz = p2.Z - p1.Z + 1`.
+
+Then, for a loaded region of p1..p2, this array ranges from `1` up to and
+including the value of the expression `Nx * Ny * Nz`.
+
+Positions offset from p1 are present in the array with the format of:
+
+ [
+ (0, 0, 0), (1, 0, 0), (2, 0, 0), ... (Nx, 0, 0),
+ (0, 1, 0), (1, 1, 0), (2, 1, 0), ... (Nx, 1, 0),
+ ...
+ (0, Ny, 0), (1, Ny, 0), (2, Ny, 0), ... (Nx, Ny, 0),
+ (0, 0, 1), (1, 0, 1), (2, 0, 1), ... (Nx, 0, 1),
+ ...
+ (0, Ny, 2), (1, Ny, 2), (2, Ny, 2), ... (Nx, Ny, 2),
+ ...
+ (0, Ny, Nz), (1, Ny, Nz), (2, Ny, Nz), ... (Nx, Ny, Nz)
+ ]
+
+and the array index for a position p contained completely in p1..p2 is:
+
+`(p.Z - p1.Z) * Ny * Nx + (p.Y - p1.Y) * Nx + (p.X - p1.X) + 1`
+
+Note that this is the same "flat 3D array" format as
+`PerlinNoiseMap:get3dMap_flat()`.
+VoxelArea objects (see section [`VoxelArea`]) can be used to simplify calculation
+of the index for a single point in a flat VoxelManip array.
+
+### Content IDs
+
+A Content ID is a unique integer identifier for a specific node type.
+These IDs are used by VoxelManip in place of the node name string for
+`VoxelManip:get_data()` and `VoxelManip:set_data()`. You can use
+`minetest.get_content_id()` to look up the Content ID for the specified node
+name, and `minetest.get_name_from_content_id()` to look up the node name string
+for a given Content ID.
+After registration of a node, its Content ID will remain the same throughout
+execution of the mod.
+Note that the node being queried needs to have already been been registered.
+
+The following builtin node types have their Content IDs defined as constants:
+
+* `minetest.CONTENT_UNKNOWN`: ID for "unknown" nodes
+* `minetest.CONTENT_AIR`: ID for "air" nodes
+* `minetest.CONTENT_IGNORE`: ID for "ignore" nodes
+
+### Mapgen VoxelManip objects
+
+Inside of `on_generated()` callbacks, it is possible to retrieve the same
+VoxelManip object used by the core's Map Generator (commonly abbreviated
+Mapgen). Most of the rules previously described still apply but with a few
+differences:
+
+* The Mapgen VoxelManip object is retrieved using:
+ `minetest.get_mapgen_object("voxelmanip")`
+* This VoxelManip object already has the region of map just generated loaded
+ into it; it's not necessary to call `VoxelManip:read_from_map()` before using
+ a Mapgen VoxelManip.
+* The `on_generated()` callbacks of some mods may place individual nodes in the
+ generated area using non-VoxelManip map modification methods. Because the
+ same Mapgen VoxelManip object is passed through each `on_generated()`
+ callback, it becomes necessary for the Mapgen VoxelManip object to maintain
+ consistency with the current map state. For this reason, calling any of the
+ following functions:
+ `minetest.add_node()`, `minetest.set_node()`, or `minetest.swap_node()`
+ will also update the Mapgen VoxelManip object's internal state active on the
+ current thread.
+* After modifying the Mapgen VoxelManip object's internal buffer, it may be
+ necessary to update lighting information using either:
+ `VoxelManip:calc_lighting()` or `VoxelManip:set_lighting()`.
+
+### Other API functions operating on a VoxelManip
+
+If any VoxelManip contents were set to a liquid node,
+`VoxelManip:update_liquids()` must be called for these liquid nodes to begin
+flowing. It is recommended to call this function only after having written all
+buffered data back to the VoxelManip object, save for special situations where
+the modder desires to only have certain liquid nodes begin flowing.
+
+The functions `minetest.generate_ores()` and `minetest.generate_decorations()`
+will generate all registered decorations and ores throughout the full area
+inside of the specified VoxelManip object.
+
+`minetest.place_schematic_on_vmanip()` is otherwise identical to
+`minetest.place_schematic()`, except instead of placing the specified schematic
+directly on the map at the specified position, it will place the schematic
+inside the VoxelManip.
+
+### Notes
+
+* Attempting to read data from a VoxelManip object before map is read will
+ result in a zero-length array table for `VoxelManip:get_data()`, and an
+ "ignore" node at any position for `VoxelManip:get_node_at()`.
+* If either a region of map has not yet been generated or is out-of-bounds of
+ the map, that region is filled with "ignore" nodes.
+* Other mods, or the core itself, could possibly modify the area of map
+ currently loaded into a VoxelManip object. With the exception of Mapgen
+ VoxelManips (see above section), the internal buffers are not updated. For
+ this reason, it is strongly encouraged to complete the usage of a particular
+ VoxelManip object in the same callback it had been created.
+* If a VoxelManip object will be used often, such as in an `on_generated()`
+ callback, consider passing a file-scoped table as the optional parameter to
+ `VoxelManip:get_data()`, which serves as a static buffer the function can use
+ to write map data to instead of returning a new table each call. This greatly
+ enhances performance by avoiding unnecessary memory allocations.
+
+Methods
+-------
+
+* `read_from_map(p1, p2)`: Loads a chunk of map into the VoxelManip object
+ containing the region formed by `p1` and `p2`.
+ * returns actual emerged `pmin`, actual emerged `pmax`
+* `write_to_map([light])`: Writes the data loaded from the `VoxelManip` back to
+ the map.
+ * **important**: data must be set using `VoxelManip:set_data()` before
+ calling this.
+ * if `light` is true, then lighting is automatically recalculated.
+ The default value is true.
+ If `light` is false, no light calculations happen, and you should correct
+ all modified blocks with `minetest.fix_light()` as soon as possible.
+ Keep in mind that modifying the map where light is incorrect can cause
+ more lighting bugs.
+* `get_node_at(pos)`: Returns a `MapNode` table of the node currently loaded in
+ the `VoxelManip` at that position
+* `set_node_at(pos, node)`: Sets a specific `MapNode` in the `VoxelManip` at
+ that position.
+* `get_data([buffer])`: Retrieves the node content data loaded into the
+ `VoxelManip` object.
+ * returns raw node data in the form of an array of node content IDs
+ * if the param `buffer` is present, this table will be used to store the
+ result instead.
+* `set_data(data)`: Sets the data contents of the `VoxelManip` object
+* `update_map()`: Does nothing, kept for compatibility.
+* `set_lighting(light, [p1, p2])`: Set the lighting within the `VoxelManip` to
+ a uniform value.
+ * `light` is a table, `{day=<0...15>, night=<0...15>}`
+ * To be used only by a `VoxelManip` object from
+ `minetest.get_mapgen_object`.
+ * (`p1`, `p2`) is the area in which lighting is set, defaults to the whole
+ area if left out.
+* `get_light_data()`: Gets the light data read into the `VoxelManip` object
+ * Returns an array (indices 1 to volume) of integers ranging from `0` to
+ `255`.
+ * Each value is the bitwise combination of day and night light values
+ (`0` to `15` each).
+ * `light = day + (night * 16)`
+* `set_light_data(light_data)`: Sets the `param1` (light) contents of each node
+ in the `VoxelManip`.
+ * expects lighting data in the same format that `get_light_data()` returns
+* `get_param2_data([buffer])`: Gets the raw `param2` data read into the
+ `VoxelManip` object.
+ * Returns an array (indices 1 to volume) of integers ranging from `0` to
+ `255`.
+ * If the param `buffer` is present, this table will be used to store the
+ result instead.
+* `set_param2_data(param2_data)`: Sets the `param2` contents of each node in
+ the `VoxelManip`.
+* `calc_lighting([p1, p2], [propagate_shadow])`: Calculate lighting within the
+ `VoxelManip`.
+ * To be used only by a `VoxelManip` object from
+ `minetest.get_mapgen_object`.
+ * (`p1`, `p2`) is the area in which lighting is set, defaults to the whole
+ area if left out or nil. For almost all uses these should be left out
+ or nil to use the default.
+ * `propagate_shadow` is an optional boolean deciding whether shadows in a
+ generated mapchunk above are propagated down into the mapchunk, defaults
+ to `true` if left out.
+* `update_liquids()`: Update liquid flow
+* `was_modified()`: Returns `true` or `false` if the data in the voxel
+ manipulator had been modified since the last read from map, due to a call to
+ `minetest.set_data()` on the loaded area elsewhere.
+* `get_emerged_area()`: Returns actual emerged minimum and maximum positions.
+
+`VoxelArea`
+-----------
+
+A helper class for voxel areas.
+It can be created via `VoxelArea:new{MinEdge=pmin, MaxEdge=pmax}`.
+The coordinates are *inclusive*, like most other things in Minetest.
+
+### Methods
+
+* `getExtent()`: returns a 3D vector containing the size of the area formed by
+ `MinEdge` and `MaxEdge`.
+* `getVolume()`: returns the volume of the area formed by `MinEdge` and
+ `MaxEdge`.
+* `index(x, y, z)`: returns the index of an absolute position in a flat array
+ starting at `1`.
+ * `x`, `y` and `z` must be integers to avoid an incorrect index result.
+ * The position (x, y, z) is not checked for being inside the area volume,
+ being outside can cause an incorrect index result.
+ * Useful for things like `VoxelManip`, raw Schematic specifiers,
+ `PerlinNoiseMap:get2d`/`3dMap`, and so on.
+* `indexp(p)`: same functionality as `index(x, y, z)` but takes a vector.
+ * As with `index(x, y, z)`, the components of `p` must be integers, and `p`
+ is not checked for being inside the area volume.
+* `position(i)`: returns the absolute position vector corresponding to index
+ `i`.
+* `contains(x, y, z)`: check if (`x`,`y`,`z`) is inside area formed by
+ `MinEdge` and `MaxEdge`.
+* `containsp(p)`: same as above, except takes a vector
+* `containsi(i)`: same as above, except takes an index `i`
+* `iter(minx, miny, minz, maxx, maxy, maxz)`: returns an iterator that returns
+ indices.
+ * from (`minx`,`miny`,`minz`) to (`maxx`,`maxy`,`maxz`) in the order of
+ `[z [y [x]]]`.
+* `iterp(minp, maxp)`: same as above, except takes a vector
+
+
+
+
+Mapgen objects
+==============
+
+A mapgen object is a construct used in map generation. Mapgen objects can be
+used by an `on_generate` callback to speed up operations by avoiding
+unnecessary recalculations, these can be retrieved using the
+`minetest.get_mapgen_object()` function. If the requested Mapgen object is
+unavailable, or `get_mapgen_object()` was called outside of an `on_generate()`
+callback, `nil` is returned.
+
+The following Mapgen objects are currently available:
+
+### `voxelmanip`
+
+This returns three values; the `VoxelManip` object to be used, minimum and
+maximum emerged position, in that order. All mapgens support this object.
+
+### `heightmap`
+
+Returns an array containing the y coordinates of the ground levels of nodes in
+the most recently generated chunk by the current mapgen.
+
+### `biomemap`
+
+Returns an array containing the biome IDs of nodes in the most recently
+generated chunk by the current mapgen.
+
+### `heatmap`
+
+Returns an array containing the temperature values of nodes in the most
+recently generated chunk by the current mapgen.
+
+### `humiditymap`
+
+Returns an array containing the humidity values of nodes in the most recently
+generated chunk by the current mapgen.
+
+### `gennotify`
+
+Returns a table mapping requested generation notification types to arrays of
+positions at which the corresponding generated structures are located within
+the current chunk. To set the capture of positions of interest to be recorded
+on generate, use `minetest.set_gen_notify()`.
+For decorations, the returned positions are the ground surface 'place_on'
+nodes, not the decorations themselves. A 'simple' type decoration is often 1
+node above the returned position and possibly displaced by 'place_offset_y'.
+
+Possible fields of the table returned are:
+
+* `dungeon`
+* `temple`
+* `cave_begin`
+* `cave_end`
+* `large_cave_begin`
+* `large_cave_end`
+* `decoration`
+
+Decorations have a key in the format of `"decoration#id"`, where `id` is the
+numeric unique decoration ID.
+
+
+
+
+Registered entities
+===================
+
+Functions receive a "luaentity" as `self`:
+
+* It has the member `.name`, which is the registered name `("mod:thing")`
+* It has the member `.object`, which is an `ObjectRef` pointing to the object
+* The original prototype stuff is visible directly via a metatable
+
+Callbacks:
+
+* `on_activate(self, staticdata, dtime_s)`
+ * Called when the object is instantiated.
+ * `dtime_s` is the time passed since the object was unloaded, which can be
+ used for updating the entity state.
+* `on_step(self, dtime)`
+ * Called on every server tick, after movement and collision processing.
+ `dtime` is usually 0.1 seconds, as per the `dedicated_server_step` setting
+ in `minetest.conf`.
+* `on_punch(self, puncher, time_from_last_punch, tool_capabilities, dir, damage)`
+ * Called when somebody punches the object.
+ * Note that you probably want to handle most punches using the automatic
+ armor group system.
+ * `puncher`: an `ObjectRef` (can be `nil`)
+ * `time_from_last_punch`: Meant for disallowing spamming of clicks
+ (can be `nil`).
+ * `tool_capabilities`: capability table of used tool (can be `nil`)
+ * `dir`: unit vector of direction of punch. Always defined. Points from the
+ puncher to the punched.
+ * `damage`: damage that will be done to entity.
+* `on_death(self, killer)`
+ * Called when the object dies.
+ * `killer`: an `ObjectRef` (can be `nil`)
+* `on_rightclick(self, clicker)`
+* `on_attach_child(self, child)`
+ * `child`: an `ObjectRef` of the child that attaches
+* `on_detach_child(self, child)`
+ * `child`: an `ObjectRef` of the child that detaches
+* `on_detach(self, parent)`
+ * `parent`: an `ObjectRef` (can be `nil`) from where it got detached
+ * This happens before the parent object is removed from the world
+* `get_staticdata(self)`
+ * Should return a string that will be passed to `on_activate` when the
+ object is instantiated the next time.
+
+
+
+
+L-system trees
+==============
+
+Tree definition
+---------------
+
+ treedef={
+ axiom, --string initial tree axiom
+ rules_a, --string rules set A
+ rules_b, --string rules set B
+ rules_c, --string rules set C
+ rules_d, --string rules set D
+ trunk, --string trunk node name
+ leaves, --string leaves node name
+ leaves2, --string secondary leaves node name
+ leaves2_chance,--num chance (0-100) to replace leaves with leaves2
+ angle, --num angle in deg
+ iterations, --num max # of iterations, usually 2 -5
+ random_level, --num factor to lower nr of iterations, usually 0 - 3
+ trunk_type, --string single/double/crossed) type of trunk: 1 node,
+ -- 2x2 nodes or 3x3 in cross shape
+ thin_branches, --boolean true -> use thin (1 node) branches
+ fruit, --string fruit node name
+ fruit_chance, --num chance (0-100) to replace leaves with fruit node
+ seed, --num random seed, if no seed is provided, the engine
+ will create one.
+ }
+
+Key for special L-System symbols used in axioms
+-----------------------------------------------
+
+* `G`: move forward one unit with the pen up
+* `F`: move forward one unit with the pen down drawing trunks and branches
+* `f`: move forward one unit with the pen down drawing leaves (100% chance)
+* `T`: move forward one unit with the pen down drawing trunks only
+* `R`: move forward one unit with the pen down placing fruit
+* `A`: replace with rules set A
+* `B`: replace with rules set B
+* `C`: replace with rules set C
+* `D`: replace with rules set D
+* `a`: replace with rules set A, chance 90%
+* `b`: replace with rules set B, chance 80%
+* `c`: replace with rules set C, chance 70%
+* `d`: replace with rules set D, chance 60%
+* `+`: yaw the turtle right by `angle` parameter
+* `-`: yaw the turtle left by `angle` parameter
+* `&`: pitch the turtle down by `angle` parameter
+* `^`: pitch the turtle up by `angle` parameter
+* `/`: roll the turtle to the right by `angle` parameter
+* `*`: roll the turtle to the left by `angle` parameter
+* `[`: save in stack current state info
+* `]`: recover from stack state info
+
+Example
+-------
+
+Spawn a small apple tree:
+
+ pos = {x=230,y=20,z=4}
+ apple_tree={
+ axiom="FFFFFAFFBF",
+ rules_a="[&&&FFFFF&&FFFF][&&&++++FFFFF&&FFFF][&&&----FFFFF&&FFFF]",
+ rules_b="[&&&++FFFFF&&FFFF][&&&--FFFFF&&FFFF][&&&------FFFFF&&FFFF]",
+ trunk="default:tree",
+ leaves="default:leaves",
+ angle=30,
+ iterations=2,
+ random_level=0,
+ trunk_type="single",
+ thin_branches=true,
+ fruit_chance=10,
+ fruit="default:apple"
+ }
+ minetest.spawn_tree(pos,apple_tree)
+
+
+
+
+'minetest' namespace reference
+==============================
+
+Utilities
+---------
+
+* `minetest.get_current_modname()`: returns the currently loading mod's name,
+ when loading a mod.
+* `minetest.get_modpath(modname)`: returns e.g.
+ `"/home/user/.minetest/usermods/modname"`.
+ * Useful for loading additional `.lua` modules or static data from mod
+* `minetest.get_modnames()`: returns a list of installed mods
+ * Return a list of installed mods, sorted alphabetically
+* `minetest.get_worldpath()`: returns e.g. `"/home/user/.minetest/world"`
+ * Useful for storing custom data
+* `minetest.is_singleplayer()`
+* `minetest.features`: Table containing API feature flags
+
+ {
+ glasslike_framed = true, -- 0.4.7
+ nodebox_as_selectionbox = true, -- 0.4.7
+ get_all_craft_recipes_works = true, -- 0.4.7
+ -- The transparency channel of textures can optionally be used on
+ -- nodes (0.4.7)
+ use_texture_alpha = true,
+ -- Tree and grass ABMs are no longer done from C++ (0.4.8)
+ no_legacy_abms = true,
+ -- Texture grouping is possible using parentheses (0.4.11)
+ texture_names_parens = true,
+ -- Unique Area ID for AreaStore:insert_area (0.4.14)
+ area_store_custom_ids = true,
+ -- add_entity supports passing initial staticdata to on_activate
+ -- (0.4.16)
+ add_entity_with_staticdata = true,
+ -- Chat messages are no longer predicted (0.4.16)
+ no_chat_message_prediction = true,
+ -- The transparency channel of textures can optionally be used on
+ -- objects (ie: players and lua entities) (5.0.0)
+ object_use_texture_alpha = true,
+ -- Object selectionbox is settable independently from collisionbox
+ -- (5.0.0)
+ object_independent_selectionbox = true,
+ -- Specifies whether binary data can be uploaded or downloaded using
+ -- the HTTP API (5.1.0)
+ httpfetch_binary_data = true,
+ }
+
+* `minetest.has_feature(arg)`: returns `boolean, missing_features`
+ * `arg`: string or table in format `{foo=true, bar=true}`
+ * `missing_features`: `{foo=true, bar=true}`
+* `minetest.get_player_information(player_name)`: Table containing information
+ about a player. Example return value:
+
+ {
+ address = "127.0.0.1", -- IP address of client
+ ip_version = 4, -- IPv4 / IPv6
+ min_rtt = 0.01, -- minimum round trip time
+ max_rtt = 0.2, -- maximum round trip time
+ avg_rtt = 0.02, -- average round trip time
+ min_jitter = 0.01, -- minimum packet time jitter
+ max_jitter = 0.5, -- maximum packet time jitter
+ avg_jitter = 0.03, -- average packet time jitter
+ connection_uptime = 200, -- seconds since client connected
+ protocol_version = 32, -- protocol version used by client
+ -- following information is available on debug build only!!!
+ -- DO NOT USE IN MODS
+ --ser_vers = 26, -- serialization version used by client
+ --major = 0, -- major version number
+ --minor = 4, -- minor version number
+ --patch = 10, -- patch version number
+ --vers_string = "0.4.9-git", -- full version string
+ --state = "Active" -- current client state
+ }
+
+* `minetest.mkdir(path)`: returns success.
+ * Creates a directory specified by `path`, creating parent directories
+ if they don't exist.
+* `minetest.get_dir_list(path, [is_dir])`: returns list of entry names
+ * is_dir is one of:
+ * nil: return all entries,
+ * true: return only subdirectory names, or
+ * false: return only file names.
+* `minetest.safe_file_write(path, content)`: returns boolean indicating success
+ * Replaces contents of file at path with new contents in a safe (atomic)
+ way. Use this instead of below code when writing e.g. database files:
+ `local f = io.open(path, "wb"); f:write(content); f:close()`
+* `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 verifiable. 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.check_for_falling then ... end`.
+* `minetest.sha1(data, [raw])`: returns the sha1 hash of data
+ * `data`: string of data to hash
+ * `raw`: return raw bytes instead of hex digits, default: false
+
+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"`.
+
+Registration functions
+----------------------
+
+Call these functions only at load time!
+
+### Environment
+
+* `minetest.register_node(name, node definition)`
+* `minetest.register_craftitem(name, item definition)`
+* `minetest.register_tool(name, item definition)`
+* `minetest.override_item(name, redefinition)`
+ * Overrides fields of an item registered with register_node/tool/craftitem.
+ * Note: Item must already be defined, (opt)depend on the mod defining it.
+ * Example: `minetest.override_item("default:mese",
+ {light_source=minetest.LIGHT_MAX})`
+* `minetest.unregister_item(name)`
+ * Unregisters the item from the engine, and deletes the entry with key
+ `name` from `minetest.registered_items` and from the associated item table
+ according to its nature: `minetest.registered_nodes`, etc.
+* `minetest.register_entity(name, entity definition)`
+* `minetest.register_abm(abm definition)`
+* `minetest.register_lbm(lbm definition)`
+* `minetest.register_alias(alias, original_name)`
+ * Also use this to set the 'mapgen aliases' needed in a game for the core
+ mapgens. See [Mapgen aliases] section above.
+* `minetest.register_alias_force(alias, original_name)`
+* `minetest.register_ore(ore definition)`
+ * Returns an integer uniquely identifying the registered ore on success.
+ * The order of ore registrations determines the order of ore generation.
+* `minetest.register_biome(biome definition)`
+ * Returns an integer uniquely identifying the registered biome on success.
+* `minetest.unregister_biome(name)`
+ * Unregisters the biome from the engine, and deletes the entry with key
+ `name` from `minetest.registered_biomes`.
+* `minetest.register_decoration(decoration definition)`
+ * Returns an integer uniquely identifying the registered decoration on
+ success.
+ * The order of decoration registrations determines the order of decoration
+ generation.
+* `minetest.register_schematic(schematic definition)`
+ * Returns an integer uniquely identifying the registered schematic on
+ success.
+ * If the schematic is loaded from a file, the `name` field is set to the
+ filename.
+ * If the function is called when loading the mod, and `name` is a relative
+ path, then the current mod path will be prepended to the schematic
+ filename.
+* `minetest.clear_registered_ores()`
+ * Clears all ores currently registered.
+* `minetest.clear_registered_biomes()`
+ * Clears all biomes currently registered.
+* `minetest.clear_registered_decorations()`
+ * Clears all decorations currently registered.
+* `minetest.clear_registered_schematics()`
+ * Clears all schematics currently registered.
+
+### Gameplay
+
+* `minetest.register_craft(recipe)`
+ * Check recipe table syntax for different types below.
+* `minetest.clear_craft(recipe)`
+ * Will erase existing craft based either on output item or on input recipe.
+ * Specify either output or input only. If you specify both, input will be
+ ignored. For input use the same recipe table syntax as for
+ `minetest.register_craft(recipe)`. For output specify only the item,
+ without a quantity.
+ * Returns false if no erase candidate could be found, otherwise returns true.
+ * **Warning**! The type field ("shaped", "cooking" or any other) will be
+ ignored if the recipe contains output. Erasing is then done independently
+ from the crafting method.
+* `minetest.register_chatcommand(cmd, chatcommand definition)`
+* `minetest.override_chatcommand(name, redefinition)`
+ * Overrides fields of a chatcommand registered with `register_chatcommand`.
+* `minetest.unregister_chatcommand(name)`
+ * Unregisters a chatcommands registered with `register_chatcommand`.
+* `minetest.register_privilege(name, definition)`
+ * `definition` can be a description or a definition table (see [Privilege
+ definition]).
+ * If it is a description, the priv will be granted to singleplayer and admin
+ by default.
+ * To allow players with `basic_privs` to grant, see the `basic_privs`
+ minetest.conf setting.
+* `minetest.register_authentication_handler(authentication handler definition)`
+ * Registers an auth handler that overrides the builtin one.
+ * This function can be called by a single mod once only.
+
+Global callback registration functions
+--------------------------------------
+
+Call these functions only at load time!
+
+* `minetest.register_globalstep(function(dtime))`
+ * Called every server step, usually interval of 0.1s
+* `minetest.register_on_mods_loaded(function())`
+ * Called after mods have finished loading and before the media is cached or the
+ aliases handled.
+* `minetest.register_on_shutdown(function())`
+ * Called before server shutdown
+ * **Warning**: If the server 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_placenode(function(pos, newnode, placer, oldnode, itemstack, pointed_thing))`
+ * Called when a node has been placed
+ * If return `true` no item is taken from `itemstack`
+ * `placer` may be any valid ObjectRef or nil.
+ * **Not recommended**; use `on_construct` or `after_place_node` in node
+ definition whenever possible.
+* `minetest.register_on_dignode(function(pos, oldnode, digger))`
+ * Called when a node has been dug.
+ * **Not recommended**; Use `on_destruct` or `after_dig_node` in node
+ definition whenever possible.
+* `minetest.register_on_punchnode(function(pos, node, puncher, pointed_thing))`
+ * Called when a node is punched
+* `minetest.register_on_generated(function(minp, maxp, blockseed))`
+ * Called after generating a piece of world. Modifying nodes inside the area
+ is a bit faster than usually.
+* `minetest.register_on_newplayer(function(ObjectRef))`
+ * Called after a new player has been created
+* `minetest.register_on_punchplayer(function(player, hitter, time_from_last_punch, tool_capabilities, dir, damage))`
+ * Called when a player is punched
+ * Note: This callback is invoked even if the punched player is dead.
+ * `player`: ObjectRef - Player that was punched
+ * `hitter`: ObjectRef - Player that hit
+ * `time_from_last_punch`: Meant for disallowing spamming of clicks
+ (can be nil).
+ * `tool_capabilities`: Capability table of used tool (can be nil)
+ * `dir`: Unit vector of direction of punch. Always defined. Points from
+ the puncher to the punched.
+ * `damage`: Number that represents the damage calculated by the engine
+ * should return `true` to prevent the default damage mechanism
+* `minetest.register_on_player_hpchange(function(player, hp_change, reason), modifier)`
+ * Called when the player gets damaged or healed
+ * `player`: ObjectRef of the player
+ * `hp_change`: the amount of change. Negative when it is damage.
+ * `reason`: a PlayerHPChangeReason table.
+ * The `type` field will have one of the following values:
+ * `set_hp`: A mod or the engine called `set_hp` without
+ giving a type - use this for custom damage types.
+ * `punch`: Was punched. `reason.object` will hold the puncher, or nil if none.
+ * `fall`
+ * `node_damage`: `damage_per_second` from a neighbouring node.
+ `reason.node` will hold the node name or nil.
+ * `drown`
+ * `respawn`
+ * Any of the above types may have additional fields from mods.
+ * `reason.from` will be `mod` or `engine`.
+ * `modifier`: when true, the function should return the actual `hp_change`.
+ Note: modifiers only get a temporary `hp_change` that can be modified by later modifiers.
+ Modifiers can return true as a second argument to stop the execution of further functions.
+ Non-modifiers receive the final HP change calculated by the modifiers.
+* `minetest.register_on_dieplayer(function(ObjectRef, reason))`
+ * Called when a player dies
+ * `reason`: a PlayerHPChangeReason table, see register_on_player_hpchange
+* `minetest.register_on_respawnplayer(function(ObjectRef))`
+ * Called when player is to be respawned
+ * Called _before_ repositioning of player occurs
+ * return true in func to disable regular player placement
+* `minetest.register_on_prejoinplayer(function(name, ip))`
+ * Called before a player joins the game
+ * If it returns a string, the player is disconnected with that string as
+ reason.
+* `minetest.register_on_joinplayer(function(ObjectRef))`
+ * Called when a player joins the game
+* `minetest.register_on_leaveplayer(function(ObjectRef, timed_out))`
+ * Called when a player leaves the game
+ * `timed_out`: True for timeout, false for other reasons.
+* `minetest.register_on_auth_fail(function(name, ip))`
+ * Called when a client attempts to log into an account but supplies the
+ wrong password.
+ * `ip`: The IP address of the client.
+ * `name`: The account the client attempted to log into.
+* `minetest.register_on_cheat(function(ObjectRef, cheat))`
+ * Called when a player cheats
+ * `cheat`: `{type=<cheat_type>}`, where `<cheat_type>` is one of:
* `moved_too_fast`
* `interacted_too_far`
* `interacted_while_dead`
* `finished_unknown_dig`
* `dug_unbreakable`
* `dug_too_fast`
-* `minetest.register_on_chat_message(func(name, message))`
+* `minetest.register_on_chat_message(function(name, message))`
* Called always when a player says something
* Return `true` to mark the message as handled, which means that it will
not be sent to other players.
-* `minetest.register_on_player_receive_fields(func(player, formname, fields))`
- * Called when a button is pressed in player's inventory form
+* `minetest.register_on_player_receive_fields(function(player, formname, fields))`
+ * Called when the server received input from `player` in a formspec with
+ the given `formname`. Specifically, this is called on any of the
+ following events:
+ * a button was pressed,
+ * Enter was pressed while the focus was on a text field
+ * a checkbox was toggled,
+ * something was selecteed in a drop-down list,
+ * a different tab was selected,
+ * selection was changed in a textlist or table,
+ * an entry was double-clicked in a textlist or table,
+ * a scrollbar was moved, or
+ * the form was actively closed by the player.
+ * Fields are sent for formspec elements which define a field. `fields`
+ is a table containing each formspecs element value (as string), with
+ the `name` parameter as index for each. The value depends on the
+ formspec element type:
+ * `button` and variants: If pressed, contains the user-facing button
+ text as value. If not pressed, is `nil`
+ * `field`, `textarea` and variants: Text in the field
+ * `dropdown`: Text of selected item
+ * `tabheader`: Tab index, starting with `"1"` (only if tab changed)
+ * `checkbox`: `"true"` if checked, `"false"` if unchecked
+ * `textlist`: See `minetest.explode_textlist_event`
+ * `table`: See `minetest.explode_table_event`
+ * `scrollbar`: See `minetest.explode_scrollbar_event`
+ * Special case: `["quit"]="true"` is sent when the user actively
+ closed the form by mouse click, keypress or through a button_exit[]
+ element.
+ * Special case: `["key_enter"]="true"` is sent when the user pressed
+ the Enter key and the focus was either nowhere (causing the formspec
+ to be closed) or on a button. If the focus was on a text field,
+ additionally, the index `key_enter_field` contains the name of the
+ text field. See also: `field_close_on_enter`.
* Newest functions are called first
* If function returns `true`, remaining functions are not called
-* `minetest.register_on_craft(func(itemstack, player, old_craft_grid, craft_inv))`
+* `minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv))`
* Called when `player` crafts something
* `itemstack` is the output
* `old_craft_grid` contains the recipe (Note: the one in the inventory is
* `craft_inv` is the inventory with the crafting grid
* Return either an `ItemStack`, to replace the output, or `nil`, to not
modify it.
-* `minetest.register_craft_predict(func(itemstack, player, old_craft_grid, craft_inv))`
+* `minetest.register_craft_predict(function(itemstack, player, old_craft_grid, craft_inv))`
* The same as before, except that it is called before the player crafts, to
make craft prediction, and it should not change anything.
-* `minetest.register_allow_player_inventory_action(func(player, inventory, action, inventory_info))`
+* `minetest.register_allow_player_inventory_action(function(player, action, inventory, inventory_info))`
* Determinates how much of a stack may be taken, put or moved to a
player inventory.
* `player` (type `ObjectRef`) is the player who modified the inventory
* `take`: Same as `put`
* Return a numeric value to limit the amount of items to be taken, put or
moved. A value of `-1` for `take` will make the source stack infinite.
-* `minetest.register_on_player_inventory_action(func(player, inventory, action, inventory_info))`
+* `minetest.register_on_player_inventory_action(function(player, action, inventory, inventory_info))`
* Called after a take, put or move event from/to/in a player inventory
* Function arguments: see `minetest.register_allow_player_inventory_action`
* Does not accept or handle any return value.
-* `minetest.register_on_protection_violation(func(pos, name))`
+* `minetest.register_on_protection_violation(function(pos, name))`
* Called by `builtin` and mods when a player violates protection at a
position (eg, digs a node or punches a protected entity).
* The registered functions can be called using
* The provided function should check that the position is protected by the
mod calling this function before it prints a message, if it does, to
allow for multiple protection mods.
-* `minetest.register_on_item_eat(func(hp_change, replace_with_item, itemstack, user, pointed_thing))`
+* `minetest.register_on_item_eat(function(hp_change, replace_with_item, itemstack, user, pointed_thing))`
* Called when an item is eaten, by `minetest.item_eat`
* Return `true` or `itemstack` to cancel the default item eat response
(i.e.: hp increase).
* `minetest.register_can_bypass_userlimit(function(name, ip))`
* Called when `name` user connects with `ip`.
* Return `true` to by pass the player limit
-* `minetest.register_on_modchannel_message(func(channel_name, sender, message))`
+* `minetest.register_on_modchannel_message(function(channel_name, sender, message))`
* Called when an incoming mod channel message is received
- * You should have joined some channels to receive events.
+ * You should have joined some channels to receive events.
* If message comes from a server mod, `sender` field is an empty string.
-### Other registration functions
-* `minetest.register_chatcommand(cmd, chatcommand definition)`
- * Adds definition to `minetest.registered_chatcommands`
-* `minetest.override_chatcommand(name, redefinition)`
- * Overrides fields of a chatcommand registered with `register_chatcommand`.
-* `minetest.unregister_chatcommand(name)`
- * Unregisters a chatcommands registered with `register_chatcommand`.
-* `minetest.register_privilege(name, definition)`
- * `definition`: `"description text"`
- * `definition`:
- `{description = "description text", give_to_singleplayer = boolean}`
- the default of `give_to_singleplayer` is true.
- * To allow players with `basic_privs` to grant, see `basic_privs`
- minetest.conf setting.
- * `on_grant(name, granter_name)`: Called when given to player `name` by
- `granter_name`.
- `granter_name` will be nil if the priv was granted by a mod.
- * `on_revoke(name, revoker_name)`: Called when taken from player `name` by
- `revoker_name`.
- `revoker_name` will be nil if the priv was revoked by a mod
- * Note that the above two callbacks will be called twice if a player is
- responsible, once with the player name, and then with a nil player name.
- * Return true in the above callbacks to stop register_on_priv_grant or
- revoke being called.
-* `minetest.register_authentication_handler(authentication handler definition)`
- * Registers an auth handler that overrides the builtin one
- * This function can be called by a single mod once only.
+Setting-related
+---------------
-### Setting-related
* `minetest.settings`: Settings object containing all of the settings from the
main config file (`minetest.conf`).
* `minetest.setting_get_pos(name)`: Loads a setting from the main settings and
parses it as a position (in the format `(1,2,3)`). Returns a position or nil.
-### Authentication
+Authentication
+--------------
+
* `minetest.string_to_privs(str)`: returns `{priv1=true,...}`
* `minetest.privs_to_string(privs)`: returns `"priv1,priv2,..."`
* Convert between two privilege representations
* The player needs to be online for this to be successful.
* `minetest.get_auth_handler()`: Return the currently active auth handler
- * See the `Authentication handler definition`
+ * See the [Authentication handler definition]
* Use this to e.g. get the authentication data for a player:
`local auth_data = minetest.get_auth_handler().get_auth(playername)`
* `minetest.notify_authentication_modified(name)`
`minetest_get_player_privs` and `minetest.auth_reload` call the authentication
handler.
-### Chat
+Chat
+----
+
* `minetest.chat_send_all(text)`
* `minetest.chat_send_player(name, text)`
-### Environment access
+Environment access
+------------------
+
* `minetest.set_node(pos, node)`
-* `minetest.add_node(pos, node): alias to `minetest.set_node`
+* `minetest.add_node(pos, node)`: alias to `minetest.set_node`
* Set node at position `pos`
* `node`: table `{name=string, param1=number, param2=number}`
* If param1 or param2 is omitted, it's set to `0`.
* Return value: Table with all node positions with a node air above
* Area volume is limited to 4,096,000 nodes
* `minetest.get_perlin(noiseparams)`
-* `minetest.get_perlin(seeddiff, octaves, persistence, scale)`
+* `minetest.get_perlin(seeddiff, octaves, persistence, spread)`
* Return world-specific perlin noise (`int(worldseed)+seeddiff`)
* `minetest.get_voxel_manip([pos1, pos2])`
* Return voxel manipulator object.
* large_cave_begin
* large_cave_end
* decoration
- * The second parameter is a list of IDS of decorations which notification
+ * The second parameter is a list of IDs of decorations which notification
is requested for.
* `minetest.get_gen_notify()`
* Returns a flagstring and a table with the `deco_id`s.
-* `minetest.get_decoration_id(decoration_name)
+* `minetest.get_decoration_id(decoration_name)`
* Returns the decoration ID number for the provided decoration name string,
or `nil` on failure.
* `minetest.get_mapgen_object(objectname)`
- * Return requested mapgen object if available (see "Mapgen objects")
+ * Return requested mapgen object if available (see [Mapgen objects])
* `minetest.get_heat(pos)`
* Returns the heat at the position, or `nil` on failure.
* `minetest.get_humidity(pos)`
* mode = `"quick"`: Clear objects immediately in loaded mapblocks,
clear objects in unloaded mapblocks only when the
mapblocks are next activated.
+* `minetest.load_area(pos1[, pos2])`
+ * Load the mapblocks containing the area from `pos1` to `pos2`.
+ `pos2` defaults to `pos1` if not specified.
+ * This function does not trigger map generation.
* `minetest.emerge_area(pos1, pos2, [callback], [param])`
* Queue all blocks in the area from `pos1` to `pos2`, inclusive, to be
asynchronously fetched from memory, loaded from disk, or if inexistent,
* If `callback` is a valid Lua function, this will be called for each block
emerged.
* The function signature of callback is:
- * `function EmergeAreaCallback(blockpos, action, calls_remaining, param)`
- * `blockpos` is the *block* coordinates of the block that had been
- emerged.
- * `action` could be one of the following constant values:
- * `minetest.EMERGE_CANCELLED`
- * `minetest.EMERGE_ERRORED`
- * `minetest.EMERGE_FROM_MEMORY`
- * `minetest.EMERGE_FROM_DISK`
- * `minetest.EMERGE_GENERATED`
- * `calls_remaining` is the number of callbacks to be expected after
- this one.
- * `param` is the user-defined parameter passed to emerge_area (or
- nil if the parameter was absent).
+ `function EmergeAreaCallback(blockpos, action, calls_remaining, param)`
+ * `blockpos` is the *block* coordinates of the block that had been
+ emerged.
+ * `action` could be one of the following constant values:
+ * `minetest.EMERGE_CANCELLED`
+ * `minetest.EMERGE_ERRORED`
+ * `minetest.EMERGE_FROM_MEMORY`
+ * `minetest.EMERGE_FROM_DISK`
+ * `minetest.EMERGE_GENERATED`
+ * `calls_remaining` is the number of callbacks to be expected after
+ this one.
+ * `param` is the user-defined parameter passed to emerge_area (or
+ nil if the parameter was absent).
* `minetest.delete_area(pos1, pos2)`
* delete all mapblocks in the area from pos1 to pos2, inclusive
* `minetest.line_of_sight(pos1, pos2)`: returns `boolean, pos`
* Creates a `Raycast` object.
* `pos1`: start of the ray
* `pos2`: end of the ray
- * `objects` : if false, only nodes will be returned. Default is `true`.
- * `liquids' : if false, liquid nodes won't be returned. Default is `false`.
+ * `objects`: if false, only nodes will be returned. Default is `true`.
+ * `liquids`: if false, liquid nodes won't be returned. Default is `false`.
* `minetest.find_path(pos1,pos2,searchdistance,max_jump,max_drop,algorithm)`
* returns table containing path
* returns a table of 3D points representing a path from `pos1` to `pos2` or
* The spawn level is intentionally above terrain level to cope with
full-node biome 'dust' nodes.
-### Mod channels
-You can find mod channels communication scheme in `docs/mod_channels.png`.
+Mod channels
+------------
+
+You can find mod channels communication scheme in `doc/mod_channels.png`.
* `minetest.mod_channel_join(channel_name)`
* Server joins channel `channel_name`, and creates it if necessary. You
- should listen from incoming messages with
- `minetest.register_on_modchannel_message` call to receive incoming
- messages.
+ should listen for incoming messages with
+ `minetest.register_on_modchannel_message`
+
+Inventory
+---------
-### Inventory
`minetest.get_inventory(location)`: returns an `InvRef`
* `location` = e.g.
* `{type="detached", name="creative"}`
* `minetest.create_detached_inventory(name, callbacks, [player_name])`: returns
an `InvRef`.
- * callbacks: See "Detached inventory callbacks"
+ * `callbacks`: See [Detached inventory callbacks]
* `player_name`: Make detached inventory available to one player
exclusively, by default they will be sent to every player (even if not
used).
Note that this parameter is mostly just a workaround and will be removed
in future releases.
* Creates a detached inventory. If it already exists, it is cleared.
+* `minetest.remove_detached_inventory(name)`
+ * Returns a `boolean` indicating whether the removal succeeded.
* `minetest.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)`:
returns left over ItemStack.
* See `minetest.item_eat` and `minetest.register_on_item_eat`
-### Formspec
+Formspec
+--------
+
* `minetest.show_formspec(playername, formname, formspec)`
* `playername`: name of player to show formspec
* `formname`: name passed to `on_player_receive_fields` callbacks.
* `minetest.explode_table_event(string)`: returns a table
* returns e.g. `{type="CHG", row=1, column=2}`
* `type` is one of:
- * `"INV"`: no row selected)
- * `"CHG"`: selected)
+ * `"INV"`: no row selected
+ * `"CHG"`: selected
* `"DCL"`: double-click
* `minetest.explode_textlist_event(string)`: returns a table
* returns e.g. `{type="CHG", index=1}`
* `type` is one of:
- * `"INV"`: no row selected)
- * `"CHG"`: selected)
+ * `"INV"`: no row selected
+ * `"CHG"`: selected
* `"DCL"`: double-click
* `minetest.explode_scrollbar_event(string)`: returns a table
* returns e.g. `{type="CHG", value=500}`
* `"CHG"`: has been changed
* `"VAL"`: not changed
-### Item handling
+Item handling
+-------------
+
* `minetest.inventorycube(img1, img2, img3)`
* Returns a string for making an image of a cube (useful as an item image)
* `minetest.get_pointed_thing_position(pointed_thing, above)`
* returns indexed table with all registered recipes for query item (node)
or `nil` if no recipe was found.
* recipe entry table:
-
- {
- method = 'normal' or 'cooking' or 'fuel'
- width = 0-3, 0 means shapeless recipe
- items = indexed [1-9] table with recipe items
- output = string with item name and quantity
- }
+ * `method`: 'normal' or 'cooking' or 'fuel'
+ * `width`: 0-3, 0 means shapeless recipe
+ * `items`: indexed [1-9] table with recipe items
+ * `output`: string with item name and quantity
* Example query for `"default:gold_ingot"` will return table:
{
table and native form.
* `colorstring`: the new color of the item stack
-### Rollback
+Rollback
+--------
+
* `minetest.rollback_get_node_actions(pos, range, seconds, limit)`:
returns `{{actor, pos, time, oldnode, newnode}, ...}`
* Find who has done something to a node, or near a node
* Revert latest actions of someone
* `actor`: `"player:<name>"`, also `"liquid"`.
-### Defaults for the `on_*` item definition functions
+Defaults for the `on_*` item definition functions
+-------------------------------------------------
+
These functions return the leftover itemstack.
* `minetest.item_place_node(itemstack, placer, pointed_thing[, param2, prevent_after_place])`
different spot. Can be `nil`
* See `minetest.do_item_eat`
-### Defaults for the `on_punch` and `on_dig` node definition callbacks
+Defaults for the `on_punch` and `on_dig` node definition callbacks
+------------------------------------------------------------------
+
* `minetest.node_punch(pos, node, puncher, pointed_thing)`
* Calls functions registered by `minetest.register_on_punchnode()`
* `minetest.node_dig(pos, node, digger)`
* Checks if node can be dug, puts item into inventory, removes node
* Calls functions registered by `minetest.registered_on_dignodes()`
-### Sounds
+Sounds
+------
+
* `minetest.sound_play(spec, parameters)`: returns a handle
* `spec` is a `SimpleSoundSpec`
* `parameters` is a sound parameter table
the sound volume.
* `gain` the target gain for the fade.
-### Timing
+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`
-### Server
+Server
+------
+
* `minetest.request_shutdown([message],[reconnect],[delay])`: request for
server shutdown. Will display `message` to clients.
* `reconnect` == true displays a reconnect button
Negative delay cancels the current active shutdown.
Zero delay triggers an immediate shutdown.
* `minetest.cancel_shutdown_requests()`: cancel current delayed shutdown
-* `minetest.get_server_status()`: returns server status string
+* `minetest.get_server_status(name, joined)`
+ * Returns the server status string when a player joins or when the command
+ `/status` is called. Returns `nil` or an empty string when the message is
+ disabled.
+ * `joined`: Boolean value, indicates whether the function was called when
+ a player joined.
+ * This function may be overwritten by mods to customize the status message.
* `minetest.get_server_uptime()`: returns the server uptime in seconds
* `minetest.remove_player(name)`: remove player from database (if they are not
connected).
* `minetest.remove_player_auth(name)`: remove player authentication data
* Returns boolean indicating success (false if player nonexistant)
-### Bans
+Bans
+----
+
* `minetest.get_ban_list()`: returns the ban list
(same as `minetest.get_ban_description("")`).
* `minetest.get_ban_description(ip_or_name)`: returns ban description (string)
* `minetest.kick_player(name, [reason])`: disconnect a player with a optional
reason.
-### Particles
+Particles
+---------
+
* `minetest.add_particle(particle definition)`
* Deprecated: `minetest.add_particle(pos, velocity, acceleration,
expirationtime, size, collisiondetection, texture, playername)`
* Add a `ParticleSpawner`, an object that spawns an amount of particles
over `time` seconds.
* Returns an `id`, and -1 if adding didn't succeed
- * `Deprecated: minetest.add_particlespawner(amount, time,
+ * Deprecated: `minetest.add_particlespawner(amount, time,
minpos, maxpos,
minvel, maxvel,
minacc, maxacc,
* If playername is specified, only deletes on the player's client,
otherwise on all clients.
-### Schematics
+Schematics
+----------
+
* `minetest.create_schematic(p1, p2, probability_list, filename, slice_prob_list)`
* Create a schematic from the volume of map specified by the box formed by
p1 and p2.
* Saves schematic in the Minetest Schematic format to filename.
* `minetest.place_schematic(pos, schematic, rotation, replacements, force_placement, flags)`
- * Place the schematic specified by schematic (see: Schematic specifier) at
+ * Place the schematic specified by schematic (see [Schematic specifier]) at
`pos`.
* `rotation` can equal `"0"`, `"90"`, `"180"`, `"270"`, or `"random"`.
* If the `rotation` parameter is omitted, the schematic is not rotated.
* `minetest.serialize_schematic(schematic, format, options)`
* Return the serialized schematic specified by schematic
- (see: Schematic specifier)
+ (see [Schematic specifier])
* in the `format` of either "mts" or "lua".
* "mts" - a string containing the binary MTS data used in the MTS file
format.
the Lua code generated will use that number of spaces as indentation
instead of a tab character.
-### HTTP Requests:
+HTTP Requests
+-------------
+
* `minetest.request_http_api()`:
* returns `HTTPApiTable` containing http functions if the calling mod has
been granted access by being listed in the `secure.http_mods` or
* `HTTPApiTable.fetch_async_get(handle)`: returns HTTPRequestResult
* Return response data for given asynchronous HTTP request
-### Storage API:
+Storage API
+-----------
+
* `minetest.get_mod_storage()`:
* returns reference to mod private `StorageRef`
* must be called during mod load time
-### Misc.
+Misc.
+-----
+
* `minetest.get_connected_players()`: returns list of `ObjectRefs`
-* `minetest.is_player(o)`: boolean, whether `o` is a player
+* `minetest.is_player(obj)`: boolean, whether `obj` is a player
* `minetest.player_exists(name)`: boolean, whether player exists
(regardless of online status)
* `minetest.hud_replace_builtin(name, hud_definition)`
not protected by the mod.
* Example:
- local old_is_protected = minetest.is_protected
- function minetest.is_protected(pos, name)
- if mymod:position_protected_from(pos, name) then
- return true
- end
- return old_is_protected(pos, name)
- end
+ local old_is_protected = minetest.is_protected
+ function minetest.is_protected(pos, name)
+ if mymod:position_protected_from(pos, name) then
+ return true
+ end
+ return old_is_protected(pos, name)
+ end
* `minetest.record_protection_violation(pos, name)`
* This function calls functions registered with
`minetest.register_on_protection_violation`.
-* `minetest.is_area_protected(pos1, pos2, player_name, interval)
+* `minetest.is_area_protected(pos1, pos2, player_name, interval)`
* Returns the position of the first node that `player_name` may not modify
in the specified cuboid between `pos1` and `pos2`.
* Returns `false` if no protections were found.
overwritten by mods to provide a faster implementation to check the
cuboid for intersections.
* `minetest.rotate_and_place(itemstack, placer, pointed_thing[, infinitestacks,
- orient_flags, prevent_after_place])`
+ orient_flags, prevent_after_place])`
* Attempt to predict the desired orientation of the facedir-capable node
defined by `itemstack`, and place it accordingly (on-wall, on the floor,
or hanging from the ceiling).
of the creative mode setting, checks for "sneak" to set the `invert_wall`
parameter and `prevent_after_place` set to `true`.
-* `minetest.forceload_block(pos[, transient])`
- * forceloads the position `pos`.
- * returns `true` if area could be forceloaded
- * If `transient` is `false` or absent, the forceload will be persistent
- (saved between server runs). If `true`, the forceload will be transient
- (not saved between server runs).
+* `minetest.forceload_block(pos[, transient])`
+ * forceloads the position `pos`.
+ * returns `true` if area could be forceloaded
+ * If `transient` is `false` or absent, the forceload will be persistent
+ (saved between server runs). If `true`, the forceload will be transient
+ (not saved between server runs).
+
+* `minetest.forceload_free_block(pos[, transient])`
+ * stops forceloading the position `pos`
+ * If `transient` is `false` or absent, frees a persistent forceload.
+ If `true`, frees a transient forceload.
+
+* `minetest.request_insecure_environment()`: returns an environment containing
+ insecure functions if the calling mod has been listed as trusted in the
+ `secure.trusted_mods` setting or security is disabled, otherwise returns
+ `nil`.
+ * Only works at init time and must be called from the mod's main scope (not
+ from a function).
+ * **DO NOT ALLOW ANY OTHER MODS TO ACCESS THE RETURNED ENVIRONMENT, STORE
+ IT IN A LOCAL VARIABLE!**
+
+* `minetest.global_exists(name)`
+ * Checks if a global variable has been set, without triggering a warning.
+
+Global objects
+--------------
+
+* `minetest.env`: `EnvRef` of the server environment and world.
+ * Any function in the minetest namespace can be called using the syntax
+ `minetest.env:somefunction(somearguments)`
+ instead of `minetest.somefunction(somearguments)`
+ * Deprecated, but support is not to be dropped soon
+
+Global tables
+-------------
+
+### Registered definition tables
+
+* `minetest.registered_items`
+ * Map of registered items, indexed by name
+* `minetest.registered_nodes`
+ * Map of registered node definitions, indexed by name
+* `minetest.registered_craftitems`
+ * Map of registered craft item definitions, indexed by name
+* `minetest.registered_tools`
+ * Map of registered tool definitions, indexed by name
+* `minetest.registered_entities`
+ * Map of registered entity prototypes, indexed by name
+* `minetest.object_refs`
+ * Map of object references, indexed by active object id
+* `minetest.luaentities`
+ * Map of Lua entities, indexed by active object id
+* `minetest.registered_abms`
+ * List of ABM definitions
+* `minetest.registered_lbms`
+ * List of LBM definitions
+* `minetest.registered_aliases`
+ * Map of registered aliases, indexed by name
+* `minetest.registered_ores`
+ * Map of registered ore definitions, indexed by the `name` field.
+ * If `name` is nil, the key is the ID returned by `minetest.register_ore`.
+* `minetest.registered_biomes`
+ * Map of registered biome definitions, indexed by the `name` field.
+ * If `name` is nil, the key is the ID returned by `minetest.register_biome`.
+* `minetest.registered_decorations`
+ * Map of registered decoration definitions, indexed by the `name` field.
+ * If `name` is nil, the key is the ID returned by
+ `minetest.register_decoration`.
+* `minetest.registered_schematics`
+ * Map of registered schematic definitions, indexed by the `name` field.
+ * If `name` is nil, the key is the ID returned by
+ `minetest.register_schematic`.
+* `minetest.registered_chatcommands`
+ * Map of registered chat command definitions, indexed by name
+* `minetest.registered_privileges`
+ * Map of registered privilege definitions, indexed by name
+
+### Registered callback tables
+
+All callbacks registered with [Global callback registration functions] are added
+to corresponding `minetest.registered_*` tables.
+
+
+
+
+Class reference
+===============
+
+Sorted alphabetically.
+
+`AreaStore`
+-----------
+
+A fast access data structure to store areas, and find areas near a given
+position or area.
+Every area has a `data` string attribute to store additional information.
+You can create an empty `AreaStore` by calling `AreaStore()`, or
+`AreaStore(type_name)`.
+If you chose the parameter-less constructor, a fast implementation will be
+automatically chosen for you.
+
+### Methods
+
+* `get_area(id, include_borders, include_data)`: returns the area with the id
+ `id`.
+ (optional) Boolean values `include_borders` and `include_data` control what's
+ copied.
+ Returns nil if specified area id does not exist.
+* `get_areas_for_pos(pos, include_borders, include_data)`: returns all areas
+ that contain the position `pos`.
+ (optional) Boolean values `include_borders` and `include_data` control what's
+ copied.
+* `get_areas_in_area(edge1, edge2, accept_overlap, include_borders, include_data)`:
+ returns all areas that contain all nodes inside the area specified by `edge1`
+ and `edge2` (inclusive).
+ If `accept_overlap` is true, also areas are returned that have nodes in
+ common with the specified area.
+ (optional) Boolean values `include_borders` and `include_data` control what's
+ copied.
+* `insert_area(edge1, edge2, data, [id])`: inserts an area into the store.
+ Returns the new area's ID, or nil if the insertion failed.
+ The (inclusive) positions `edge1` and `edge2` describe the area.
+ `data` is a string stored with the area. If passed, `id` will be used as the
+ internal area ID, it must be a unique number between 0 and 2^32-2. If you use
+ the `id` parameter you must always use it, or insertions are likely to fail
+ due to conflicts.
+* `reserve(count)`: reserves resources for at most `count` many contained
+ areas.
+ Only needed for efficiency, and only some implementations profit.
+* `remove_area(id)`: removes the area with the given id from the store, returns
+ success.
+* `set_cache_params(params)`: sets params for the included prefiltering cache.
+ Calling invalidates the cache, so that its elements have to be newly
+ generated.
+ * `params` is a table with the following fields:
+
+ enabled = boolean, -- Whether to enable, default true
+ block_radius = int, -- The radius (in nodes) of the areas the cache
+ -- generates prefiltered lists for, minimum 16,
+ -- default 64
+ limit = int, -- The cache size, minimum 20, default 1000
+* `to_string()`: Experimental. Returns area store serialized as a (binary)
+ string.
+* `to_file(filename)`: Experimental. Like `to_string()`, but writes the data to
+ a file.
+* `from_string(str)`: Experimental. Deserializes string and loads it into the
+ AreaStore.
+ Returns success and, optionally, an error message.
+* `from_file(filename)`: Experimental. Like `from_string()`, but reads the data
+ from a file.
+
+`InvRef`
+--------
+
+An `InvRef` is a reference to an inventory.
+
+### Methods
+
+* `is_empty(listname)`: return `true` if list is empty
+* `get_size(listname)`: get size of a list
+* `set_size(listname, size)`: set size of a list
+ * returns `false` on error (e.g. invalid `listname` or `size`)
+* `get_width(listname)`: get width of a list
+* `set_width(listname, width)`: set width of list; currently used for crafting
+* `get_stack(listname, i)`: get a copy of stack index `i` in list
+* `set_stack(listname, i, stack)`: copy `stack` to index `i` in list
+* `get_list(listname)`: return full list
+* `set_list(listname, list)`: set full list (size will not change)
+* `get_lists()`: returns list of inventory lists
+* `set_lists(lists)`: sets inventory lists (size will not change)
+* `add_item(listname, stack)`: add item somewhere in list, returns leftover
+ `ItemStack`.
+* `room_for_item(listname, stack):` returns `true` if the stack of items
+ can be fully added to the list
+* `contains_item(listname, stack, [match_meta])`: returns `true` if
+ the stack of items can be fully taken from the list.
+ If `match_meta` is false, only the items' names are compared
+ (default: `false`).
+* `remove_item(listname, stack)`: take as many items as specified from the
+ list, returns the items that were actually removed (as an `ItemStack`)
+ -- note that any item metadata is ignored, so attempting to remove a specific
+ unique item this way will likely remove the wrong one -- to do that use
+ `set_stack` with an empty `ItemStack`.
+* `get_location()`: returns a location compatible to
+ `minetest.get_inventory(location)`.
+ * returns `{type="undefined"}` in case location is not known
+
+`ItemStack`
+-----------
+
+An `ItemStack` is a stack of items.
+
+It can be created via `ItemStack(x)`, where x is an `ItemStack`,
+an itemstring, a table or `nil`.
+
+### Methods
+
+* `is_empty()`: returns `true` if stack is empty.
+* `get_name()`: returns item name (e.g. `"default:stone"`).
+* `set_name(item_name)`: returns a boolean indicating whether the item was
+ cleared.
+* `get_count()`: Returns number of items on the stack.
+* `set_count(count)`: returns a boolean indicating whether the item was cleared
+ * `count`: number, unsigned 16 bit integer
+* `get_wear()`: returns tool wear (`0`-`65535`), `0` for non-tools.
+* `set_wear(wear)`: returns boolean indicating whether item was cleared
+ * `wear`: number, unsigned 16 bit integer
+* `get_meta()`: returns ItemStackMetaRef. See section for more details
+* `get_metadata()`: (DEPRECATED) Returns metadata (a string attached to an item
+ stack).
+* `set_metadata(metadata)`: (DEPRECATED) Returns true.
+* `clear()`: removes all items from the stack, making it empty.
+* `replace(item)`: replace the contents of this stack.
+ * `item` can also be an itemstring or table.
+* `to_string()`: returns the stack in itemstring form.
+* `to_table()`: returns the stack in Lua table form.
+* `get_stack_max()`: returns the maximum size of the stack (depends on the
+ item).
+* `get_free_space()`: returns `get_stack_max() - get_count()`.
+* `is_known()`: returns `true` if the item name refers to a defined item type.
+* `get_definition()`: returns the item definition table.
+* `get_tool_capabilities()`: returns the digging properties of the item,
+ or those of the hand if none are defined for this item type
+* `add_wear(amount)`
+ * Increases wear by `amount` if the item is a tool
+ * `amount`: number, integer
+* `add_item(item)`: returns leftover `ItemStack`
+ * Put some item or stack onto this stack
+* `item_fits(item)`: returns `true` if item or stack can be fully added to
+ this one.
+* `take_item(n)`: returns taken `ItemStack`
+ * Take (and remove) up to `n` items from this stack
+ * `n`: number, default: `1`
+* `peek_item(n)`: returns taken `ItemStack`
+ * Copy (don't remove) up to `n` items from this stack
+ * `n`: number, default: `1`
+
+`ItemStackMetaRef`
+------------------
-* `minetest.forceload_free_block(pos[, transient])`
- * stops forceloading the position `pos`
- * If `transient` is `false` or absent, frees a persistent forceload.
- If `true`, frees a transient forceload.
+ItemStack metadata: reference extra data and functionality stored in a stack.
+Can be obtained via `item:get_meta()`.
-* `minetest.request_insecure_environment()`: returns an environment containing
- insecure functions if the calling mod has been listed as trusted in the
- `secure.trusted_mods` setting or security is disabled, otherwise returns
- `nil`.
- * Only works at init time and must be called from the mod's main scope (not
- from a function).
- * **DO NOT ALLOW ANY OTHER MODS TO ACCESS THE RETURNED ENVIRONMENT, STORE
- IT IN A LOCAL VARIABLE!**
+### Methods
-* `minetest.global_exists(name)`
- * Checks if a global variable has been set, without triggering a warning.
+* All methods in MetaDataRef
+* `set_tool_capabilities([tool_capabilities])`
+ * Overrides the item's tool capabilities
+ * A nil value will clear the override data and restore the original
+ behavior.
-### Global objects
-* `minetest.env`: `EnvRef` of the server environment and world.
- * Any function in the minetest namespace can be called using the syntax
- `minetest.env:somefunction(somearguments)`
- instead of `minetest.somefunction(somearguments)`
- * Deprecated, but support is not to be dropped soon
+`MetaDataRef`
+-------------
-### Global tables
-* `minetest.registered_items`
- * Map of registered items, indexed by name
-* `minetest.registered_nodes`
- * Map of registered node definitions, indexed by name
-* `minetest.registered_craftitems`
- * Map of registered craft item definitions, indexed by name
-* `minetest.registered_tools`
- * Map of registered tool definitions, indexed by name
-* `minetest.registered_entities`
- * Map of registered entity prototypes, indexed by name
-* `minetest.object_refs`
- * Map of object references, indexed by active object id
-* `minetest.luaentities`
- * Map of Lua entities, indexed by active object id
-* `minetest.registered_chatcommands`
- * Map of registered chat command definitions, indexed by name
-* `minetest.registered_ores`
- * List of registered ore definitions.
-* `minetest.registered_biomes`
- * List of registered biome definitions.
-* `minetest.registered_decorations`
- * List of registered decoration definitions.
+See [`StorageRef`], [`NodeMetaRef`], [`ItemStackMetaRef`], and [`PlayerMetaRef`].
-Class reference
----------------
+### Methods
+
+* `contains(key)`: Returns true if key present, otherwise false.
+ * Returns `nil` when the MetaData is inexistent.
+* `get(key)`: Returns `nil` if key not present, else the stored string.
+* `set_string(key, value)`: Value of `""` will delete the key.
+* `get_string(key)`: Returns `""` if key not present.
+* `set_int(key, value)`
+* `get_int(key)`: Returns `0` if key not present.
+* `set_float(key, value)`
+* `get_float(key)`: Returns `0` if key not present.
+* `to_table()`: returns `nil` or a table with keys:
+ * `fields`: key-value storage
+ * `inventory`: `{list1 = {}, ...}}` (NodeMetaRef only)
+* `from_table(nil or {})`
+ * Any non-table value will clear the metadata
+ * See [Node Metadata] for an example
+ * returns `true` on success
+* `equals(other)`
+ * returns `true` if this metadata has the same key-value pairs as `other`
-### ModChannel
+`ModChannel`
+------------
An interface to use mod channels on client and server
-#### Methods
+### Methods
+
* `leave()`: leave the mod channel.
* Server leaves channel `channel_name`.
* No more incoming or outgoing messages can be sent to this channel from
server mods.
* This invalidate all future object usage.
- * Ensure your set mod_channel to nil after that to free Lua resources.
+ * Ensure you set mod_channel to nil after that to free Lua resources.
* `is_writeable()`: returns true if channel is writeable and mod can send over
it.
* `send_all(message)`: Send `message` though the mod channel.
* If mod channel is not writeable or invalid, message will be dropped.
* Message size is limited to 65535 characters by protocol.
-### `MetaDataRef`
-See `StorageRef`, `NodeMetaRef` and `ItemStackMetaRef`.
-
-#### Methods
-* `set_string(name, value)`
-* `get_string(name)`
-* `set_int(name, value)`
-* `get_int(name)`
-* `set_float(name, value)`
-* `get_float(name)`
-* `to_table()`: returns `nil` or a table with keys:
- * `fields`: key-value storage
- * `inventory`: `{list1 = {}, ...}}` (NodeMetaRef only)
-* `from_table(nil or {})`
- * Any non-table value will clear the metadata
- * See "Node Metadata" for an example
- * returns `true` on success
-* `equals(other)`
- * returns `true` if this metadata has the same key-value pairs as `other`
+`NodeMetaRef`
+-------------
-### `NodeMetaRef`
Node metadata: reference extra data and functionality stored in a node.
Can be obtained via `minetest.get_meta(pos)`.
-#### Methods
+### Methods
+
* All methods in MetaDataRef
* `get_inventory()`: returns `InvRef`
* `mark_as_private(name or {name1, name2, ...})`: Mark specific vars as private
meaning it's best to call this when initializing all other meta (e.g.
`on_construct`).
-### `ItemStackMetaRef`
-ItemStack metadata: reference extra data and functionality stored in a stack.
-Can be obtained via `item:get_meta()`.
-
-#### Methods
-* All methods in MetaDataRef
-* `set_tool_capabilities([tool_capabilities])`
- * Overrides the item's tool capabilities
- * A nil value will clear the override data and restore the original
- behavior.
-
-### `StorageRef`
-Mod metadata: per mod metadata, saved automatically.
-Can be obtained via `minetest.get_mod_storage()` during load time.
-
-#### Methods
-* All methods in MetaDataRef
+`NodeTimerRef`
+--------------
-### `NodeTimerRef`
Node Timers: a high resolution persistent per-node timer.
Can be gotten via `minetest.get_node_timer(pos)`.
-#### Methods
+### Methods
+
* `set(timeout,elapsed)`
* set a timer's state
* `timeout` is in seconds, and supports fractional values (0.1 etc)
* `is_started()`: returns boolean state of timer
* returns `true` if timer is started, otherwise `false`
-### `ObjectRef`
+`ObjectRef`
+-----------
+
Moving things in the game are generally these.
This is basically a reference to a C++ `ServerActiveObject`
-#### Methods
+### Methods
+
* `remove()`: remove object (after returning from Lua)
* Note: Doesn't work on players, use `minetest.kick_player` instead
* `get_pos()`: returns `{x=num, y=num, z=num}`
-* `set_pos(pos)`; `pos`=`{x=num, y=num, z=num}`
+* `set_pos(pos)`: `pos`=`{x=num, y=num, z=num}`
* `move_to(pos, continuous=false)`: interpolated move
* `punch(puncher, time_from_last_punch, tool_capabilities, direction)`
* `puncher` = another `ObjectRef`,
text = "My Nametag",
}
-##### LuaEntitySAO-only (no-op for other objects)
+#### LuaEntitySAO-only (no-op for other objects)
+
* `set_velocity(vel)`
* `vel` is a vector, e.g. `{x=0.0, y=2.3, z=1.0}`
* `add_velocity(vel)`
* `set_acceleration(acc)`
* `acc` is a vector
* `get_acceleration()`: returns the acceleration, a vector
-* `set_yaw(radians)`
+* `set_rotation(rot)`
+ * `rot` is a vector (radians). X is pitch (elevation), Y is yaw (heading)
+ and Z is roll (bank).
+* `get_rotation()`: returns the rotation, a vector (radians)
+* `set_yaw(radians)`: sets the yaw (heading).
* `get_yaw()`: returns number in radians
* `set_texture_mod(mod)`
* `get_texture_mod()` returns current texture modifier
* `get_entity_name()` (**Deprecated**: Will be removed in a future version)
* `get_luaentity()`
-##### Player-only (no-op for other objects)
+#### Player-only (no-op for other objects)
+
* `get_player_name()`: returns `""` if is not a player
* `get_player_velocity()`: returns `nil` if is not a player, otherwise a
table {x, y, z} representing the player's instantaneous velocity in nodes/s
* `get_look_horizontal()`: yaw in radians
* Angle is counter-clockwise from the +z direction.
* `set_look_vertical(radians)`: sets look pitch
- * radians - Angle from looking forward, where positive is downwards.
+ * radians: Angle from looking forward, where positive is downwards.
* `set_look_horizontal(radians)`: sets look yaw
- * radians - Angle from the +z direction, where positive is
- counter-clockwise.
+ * radians: Angle from the +z direction, where positive is counter-clockwise.
* `get_look_pitch()`: pitch in radians - Deprecated as broken. Use
`get_look_vertical`.
* Angle ranges between -pi/2 and pi/2, which are straight down and up
* values:
* `0`: player is drowning
* max: bubbles bar is not shown
- * See Object Properties for more information
-* `set_attribute(attribute, value)`:
+ * See [Object properties] for more information
+* `set_attribute(attribute, value)`: DEPRECATED, use get_meta() instead
* Sets an extra attribute with value on player.
* `value` must be a string, or a number which will be converted to a
string.
* If `value` is `nil`, remove attribute from player.
-* `get_attribute(attribute)`:
+* `get_attribute(attribute)`: DEPRECATED, use get_meta() instead
* Returns value (a string) for extra attribute.
* Returns `nil` if no attribute found.
+* `get_meta()`: Returns a PlayerMetaRef.
* `set_inventory_formspec(formspec)`
* Redefine player's inventory form
* Should usually be called in `on_joinplayer`
* element `stat` values:
`position`, `name`, `scale`, `text`, `number`, `item`, `dir`
* `hud_get(id)`: gets the HUD element definition structure of the specified ID
-* `hud_set_flags(flags)`: sets specified HUD flags to `true`/`false`
- * `flags`: (is visible) `hotbar`, `healthbar`, `crosshair`, `wielditem`,
- `breathbar`, `minimap`, `minimap_radar`
- * pass a table containing a `true`/`false` value of each flag to be set or
- unset.
- * if a flag equals `nil`, the flag is not modified
- * note that setting `minimap` modifies the client's permission to view the
- minimap - the client may locally elect to not view the minimap.
- * minimap `radar` is only usable when `minimap` is true
-* `hud_get_flags()`: returns a table containing status of hud flags
- * returns `{hotbar=true, healthbar=true, crosshair=true, wielditem=true,
- breathbar=true, minimap=true, minimap_radar=true}`
+* `hud_set_flags(flags)`: sets specified HUD flags of player.
+ * `flags`: A table with the following fields set to boolean values
+ * hotbar
+ * healthbar
+ * crosshair
+ * wielditem
+ * breathbar
+ * minimap
+ * minimap_radar
+ * If a flag equals `nil`, the flag is not modified
+ * `minimap`: Modifies the client's permission to view the minimap.
+ The client may locally elect to not view the minimap.
+ * `minimap_radar` is only usable when `minimap` is true
+* `hud_get_flags()`: returns a table of player HUD flags with boolean values.
+ * See `hud_set_flags` for a list of flags that can be toggled.
* `hud_set_hotbar_itemcount(count)`: sets number of items in builtin hotbar
- * `count`: number of items, must be between `1` and `23`
+ * `count`: number of items, must be between `1` and `32`
* `hud_get_hotbar_itemcount`: returns number of visible items
* `hud_set_hotbar_image(texturename)`
* sets background image for hotbar
`set_clouds`.
* `override_day_night_ratio(ratio or nil)`
* `0`...`1`: Overrides day-night ratio, controlling sunlight to a specific
- amount.
- * `nil`: Disables override, defaulting to sunlight based on day-night cycle
-* `get_day_night_ratio()`: returns the ratio or nil if it isn't overridden
-* `set_local_animation(stand/idle, walk, dig, walk+dig, frame_speed=frame_speed)`:
- set animation for player model in third person view
-
- set_local_animation({x=0, y=79}, -- < stand/idle animation key frames
- {x=168, y=187}, -- < walk animation key frames
- {x=189, y=198}, -- < dig animation key frames
- {x=200, y=219}, -- < walk+dig animation key frames
- frame_speed=30): -- < animation frame speed
-* `get_local_animation()`: returns stand, walk, dig, dig+walk tables and
- `frame_speed`.
-* `set_eye_offset({x=0,y=0,z=0},{x=0,y=0,z=0})`: defines offset value for
- camera per player.
- * in first person view
- * in third person view (max. values `{x=-10/10,y=-10,15,z=-5/5}`)
-* `get_eye_offset()`: returns `offset_first` and `offset_third`
-
-### `InvRef`
-An `InvRef` is a reference to an inventory.
-
-#### Methods
-* `is_empty(listname)`: return `true` if list is empty
-* `get_size(listname)`: get size of a list
-* `set_size(listname, size)`: set size of a list
- * returns `false` on error (e.g. invalid `listname` or `size`)
-* `get_width(listname)`: get width of a list
-* `set_width(listname, width)`: set width of list; currently used for crafting
-* `get_stack(listname, i)`: get a copy of stack index `i` in list
-* `set_stack(listname, i, stack)`: copy `stack` to index `i` in list
-* `get_list(listname)`: return full list
-* `set_list(listname, list)`: set full list (size will not change)
-* `get_lists()`: returns list of inventory lists
-* `set_lists(lists)`: sets inventory lists (size will not change)
-* `add_item(listname, stack)`: add item somewhere in list, returns leftover
- `ItemStack`.
-* `room_for_item(listname, stack):` returns `true` if the stack of items
- can be fully added to the list
-* `contains_item(listname, stack, [match_meta])`: returns `true` if
- the stack of items can be fully taken from the list.
- If `match_meta` is false, only the items' names are compared
- (default: `false`).
-* `remove_item(listname, stack)`: take as many items as specified from the
- list, returns the items that were actually removed (as an `ItemStack`)
- -- note that any item metadata is ignored, so attempting to remove a specific
- unique item this way will likely remove the wrong one -- to do that use
- `set_stack` with an empty `ItemStack`.
-* `get_location()`: returns a location compatible to
- `minetest.get_inventory(location)`.
- * returns `{type="undefined"}` in case location is not known
-
-### `AreaStore`
-A fast access data structure to store areas, and find areas near a given
-position or area.
-Every area has a `data` string attribute to store additional information.
-You can create an empty `AreaStore` by calling `AreaStore()`, or
-`AreaStore(type_name)`.
-If you chose the parameter-less constructor, a fast implementation will be
-automatically chosen for you.
-
-#### Methods
-* `get_area(id, include_borders, include_data)`: returns the area with the id
- `id`.
- (optional) Boolean values `include_borders` and `include_data` control what's
- copied.
- Returns nil if specified area id does not exist.
-* `get_areas_for_pos(pos, include_borders, include_data)`: returns all areas
- that contain the position `pos`.
- (optional) Boolean values `include_borders` and `include_data` control what's
- copied.
-* `get_areas_in_area(edge1, edge2, accept_overlap, include_borders, include_data)`:
- returns all areas that contain all nodes inside the area specified by `edge1`
- and `edge2` (inclusive).
- If `accept_overlap` is true, also areas are returned that have nodes in
- common with the specified area.
- (optional) Boolean values `include_borders` and `include_data` control what's
- copied.
-* `insert_area(edge1, edge2, data, [id])`: inserts an area into the store.
- Returns the new area's ID, or nil if the insertion failed.
- The (inclusive) positions `edge1` and `edge2` describe the area.
- `data` is a string stored with the area. If passed, `id` will be used as the
- internal area ID, it must be a unique number between 0 and 2^32-2. If you use
- the `id` parameter you must always use it, or insertions are likely to fail
- due to conflicts.
-* `reserve(count)`: reserves resources for at most `count` many contained
- areas.
- Only needed for efficiency, and only some implementations profit.
-* `remove_area(id)`: removes the area with the given id from the store, returns
- success.
-* `set_cache_params(params)`: sets params for the included prefiltering cache.
- Calling invalidates the cache, so that its elements have to be newly
- generated.
- * `params`:
- {
- enabled = boolean, -- whether to enable, default true
- block_radius = number, -- the radius (in nodes) of the areas the cache
- generates prefiltered lists for, minimum 16,
- default 64.
- limit = number, -- the cache's size, minimum 20, default 1000
- }
-* `to_string()`: Experimental. Returns area store serialized as a (binary)
- string.
-* `to_file(filename)`: Experimental. Like `to_string()`, but writes the data to
- a file.
-* `from_string(str)`: Experimental. Deserializes string and loads it into the
- AreaStore.
- Returns success and, optionally, an error message.
-* `from_file(filename)`: Experimental. Like `from_string()`, but reads the data
- from a file.
-
-### `ItemStack`
-An `ItemStack` is a stack of items.
-
-It can be created via `ItemStack(x)`, where x is an `ItemStack`,
-an itemstring, a table or `nil`.
-
-#### Methods
-* `is_empty()`: returns `true` if stack is empty.
-* `get_name()`: returns item name (e.g. `"default:stone"`).
-* `set_name(item_name)`: returns a boolean indicating whether the item was
- cleared.
-* `get_count()`: Returns number of items on the stack.
-* `set_count(count)`: returns a boolean indicating whether the item was cleared
- * `count`: number, unsigned 16 bit integer
-* `get_wear()`: returns tool wear (`0`-`65535`), `0` for non-tools.
-* `set_wear(wear)`: returns boolean indicating whether item was cleared
- * `wear`: number, unsigned 16 bit integer
-* `get_meta()`: returns ItemStackMetaRef. See section for more details
-* `get_metadata()`: (DEPRECATED) Returns metadata (a string attached to an item
- stack).
-* `set_metadata(metadata)`: (DEPRECATED) Returns true.
-* `clear()`: removes all items from the stack, making it empty.
-* `replace(item)`: replace the contents of this stack.
- * `item` can also be an itemstring or table.
-* `to_string()`: returns the stack in itemstring form.
-* `to_table()`: returns the stack in Lua table form.
-* `get_stack_max()`: returns the maximum size of the stack (depends on the
- item).
-* `get_free_space()`: returns `get_stack_max() - get_count()`.
-* `is_known()`: returns `true` if the item name refers to a defined item type.
-* `get_definition()`: returns the item definition table.
-* `get_tool_capabilities()`: returns the digging properties of the item,
- or those of the hand if none are defined for this item type
-* `add_wear(amount)`
- * Increases wear by `amount` if the item is a tool
- * `amount`: number, integer
-* `add_item(item)`: returns leftover `ItemStack`
- * Put some item or stack onto this stack
-* `item_fits(item)`: returns `true` if item or stack can be fully added to
- this one.
-* `take_item(n)`: returns taken `ItemStack`
- * Take (and remove) up to `n` items from this stack
- * `n`: number, default: `1`
-* `peek_item(n)`: returns taken `ItemStack`
- * Copy (don't remove) up to `n` items from this stack
- * `n`: number, default: `1`
-
-### `PseudoRandom`
-A 16-bit pseudorandom number generator.
-Uses a well-known LCG algorithm introduced by K&R.
+ amount.
+ * `nil`: Disables override, defaulting to sunlight based on day-night cycle
+* `get_day_night_ratio()`: returns the ratio or nil if it isn't overridden
+* `set_local_animation(stand/idle, walk, dig, walk+dig, frame_speed=frame_speed)`:
+ set animation for player model in third person view
-It can be created via `PseudoRandom(seed)`.
+ set_local_animation({x=0, y=79}, -- stand/idle animation key frames
+ {x=168, y=187}, -- walk animation key frames
+ {x=189, y=198}, -- dig animation key frames
+ {x=200, y=219}, -- walk+dig animation key frames
+ frame_speed=30) -- animation frame speed
+* `get_local_animation()`: returns stand, walk, dig, dig+walk tables and
+ `frame_speed`.
+* `set_eye_offset({x=0,y=0,z=0},{x=0,y=0,z=0})`: defines offset value for
+ camera per player.
+ * in first person view
+ * in third person view (max. values `{x=-10/10,y=-10,15,z=-5/5}`)
+* `get_eye_offset()`: returns `offset_first` and `offset_third`
+* `send_mapblock(blockpos)`:
+ * Sends a server-side loaded mapblock to the player.
+ * Returns `false` if failed.
+ * Resource intensive - use sparsely
+ * To get blockpos, integer divide pos by 16
-#### Methods
-* `next()`: return next integer random number [`0`...`32767`]
-* `next(min, max)`: return next integer random number [`min`...`max`]
- * `((max - min) == 32767) or ((max-min) <= 6553))` must be true
- due to the simple implementation making bad distribution otherwise.
+`PcgRandom`
+-----------
-### `PcgRandom`
A 32-bit pseudorandom number generator.
Uses PCG32, an algorithm of the permuted congruential generator family,
offering very strong randomness.
It can be created via `PcgRandom(seed)` or `PcgRandom(seed, sequence)`.
-#### Methods
+### Methods
+
* `next()`: return next integer random number [`-2147483648`...`2147483647`]
* `next(min, max)`: return next integer random number [`min`...`max`]
* `rand_normal_dist(min, max, num_trials=6)`: return normally distributed
* `variance = (((max - min + 1) ^ 2) - 1) / (12 * num_trials)`
* Increasing `num_trials` improves accuracy of the approximation
-### `SecureRandom`
-Interface for the operating system's crypto-secure PRNG.
-
-It can be created via `SecureRandom()`. The constructor returns nil if a
-secure random device cannot be found on the system.
-
-#### Methods
-* `next_bytes([count])`: return next `count` (default 1, capped at 2048) many
- random bytes, as a string.
+`PerlinNoise`
+-------------
-### `PerlinNoise`
A perlin noise generator.
-It can be created via `PerlinNoise(seed, octaves, persistence, scale)`
+It can be created via `PerlinNoise(seed, octaves, persistence, spread)`
or `PerlinNoise(noiseparams)`.
-Alternatively with `minetest.get_perlin(seeddiff, octaves, persistence, scale)`
+Alternatively with `minetest.get_perlin(seeddiff, octaves, persistence, spread)`
or `minetest.get_perlin(noiseparams)`.
-#### Methods
+### Methods
+
* `get_2d(pos)`: returns 2D noise value at `pos={x=,y=}`
* `get_3d(pos)`: returns 3D noise value at `pos={x=,y=,z=}`
-### `PerlinNoiseMap`
+`PerlinNoiseMap`
+----------------
+
A fast, bulk perlin noise generator.
It can be created via `PerlinNoiseMap(noiseparams, size)` or
not nil, this table will be used to store the result instead of creating a new
table.
-#### Methods
+### Methods
+
* `get_2d_map(pos)`: returns a `<size.x>` times `<size.y>` 2D array of 2D noise
with values starting at `pos={x=,y=}`
* `get_3d_map(pos)`: returns a `<size.x>` times `<size.y>` times `<size.z>`
`noise:calc_3d_map({x=1000, y=1000, z=1000})`
`noisevals = noise:get_map_slice({x=24, z=1}, {x=1, z=1})`
-### `VoxelManip`
-
-#### About VoxelManip
-VoxelManip is a scripting interface to the internal 'Map Voxel Manipulator'
-facility. The purpose of this object is for fast, low-level, bulk access to
-reading and writing Map content. As such, setting map nodes through VoxelManip
-will lack many of the higher level features and concepts you may be used to
-with other methods of setting nodes. For example, nodes will not have their
-construction and destruction callbacks run, and no rollback information is
-logged.
-
-It is important to note that VoxelManip is designed for speed, and *not* ease
-of use or flexibility. If your mod requires a map manipulation facility that
-will handle 100% of all edge cases, or the use of high level node placement
-features, perhaps `minetest.set_node()` is better suited for the job.
-
-In addition, VoxelManip might not be faster, or could even be slower, for your
-specific use case. VoxelManip is most effective when setting large areas of map
-at once - for example, if only setting a 3x3x3 node area, a
-`minetest.set_node()` loop may be more optimal. Always profile code using both
-methods of map manipulation to determine which is most appropriate for your
-usage.
-
-A recent simple test of setting cubic areas showed that `minetest.set_node()`
-is faster than a VoxelManip for a 3x3x3 node cube or smaller.
-
-#### Using VoxelManip
-A VoxelManip object can be created any time using either:
-`VoxelManip([p1, p2])`, or `minetest.get_voxel_manip([p1, p2])`.
-
-If the optional position parameters are present for either of these routines,
-the specified region will be pre-loaded into the VoxelManip object on creation.
-Otherwise, the area of map you wish to manipulate must first be loaded into the
-VoxelManip object using `VoxelManip:read_from_map()`.
-
-Note that `VoxelManip:read_from_map()` returns two position vectors. The region
-formed by these positions indicate the minimum and maximum (respectively)
-positions of the area actually loaded in the VoxelManip, which may be larger
-than the area requested. For convenience, the loaded area coordinates can also
-be queried any time after loading map data with `VoxelManip:get_emerged_area()`.
-
-Now that the VoxelManip object is populated with map data, your mod can fetch a
-copy of this data using either of two methods. `VoxelManip:get_node_at()`,
-which retrieves an individual node in a MapNode formatted table at the position
-requested is the simplest method to use, but also the slowest.
-
-Nodes in a VoxelManip object may also be read in bulk to a flat array table
-using:
-
-* `VoxelManip:get_data()` for node content (in Content ID form, see section
- 'Content IDs'),
-* `VoxelManip:get_light_data()` for node light levels, and
-* `VoxelManip:get_param2_data()` for the node type-dependent "param2" values.
-
-See section 'Flat array format' for more details.
-
-It is very important to understand that the tables returned by any of the above
-three functions represent a snapshot of the VoxelManip's internal state at the
-time of the call. This copy of the data will not magically update itself if
-another function modifies the internal VoxelManip state.
-Any functions that modify a VoxelManip's contents work on the VoxelManip's
-internal state unless otherwise explicitly stated.
-
-Once the bulk data has been edited to your liking, the internal VoxelManip
-state can be set using:
-
-* `VoxelManip:set_data()` for node content (in Content ID form, see section
- 'Content IDs'),
-* `VoxelManip:set_light_data()` for node light levels, and
-* `VoxelManip:set_param2_data()` for the node type-dependent `param2` values.
-
-The parameter to each of the above three functions can use any table at all in
-the same flat array format as produced by `get_data()` etc. and is not required
-to be a table retrieved from `get_data()`.
+`PlayerMetaRef`
+---------------
-Once the internal VoxelManip state has been modified to your liking, the
-changes can be committed back to the map by calling `VoxelManip:write_to_map()`
+Player metadata.
+Uses the same method of storage as the deprecated player attribute API, so
+data there will also be in player meta.
+Can be obtained using `player:get_meta()`.
+### Methods
-##### Flat array format
-Let
- `Nx = p2.X - p1.X + 1`,
- `Ny = p2.Y - p1.Y + 1`, and
- `Nz = p2.Z - p1.Z + 1`.
+* All methods in MetaDataRef
-Then, for a loaded region of p1..p2, this array ranges from `1` up to and
-including the value of the expression `Nx * Ny * Nz`.
+`PseudoRandom`
+--------------
-Positions offset from p1 are present in the array with the format of:
+A 16-bit pseudorandom number generator.
+Uses a well-known LCG algorithm introduced by K&R.
-```
-[
- (0, 0, 0), (1, 0, 0), (2, 0, 0), ... (Nx, 0, 0),
- (0, 1, 0), (1, 1, 0), (2, 1, 0), ... (Nx, 1, 0),
- ...
- (0, Ny, 0), (1, Ny, 0), (2, Ny, 0), ... (Nx, Ny, 0),
- (0, 0, 1), (1, 0, 1), (2, 0, 1), ... (Nx, 0, 1),
- ...
- (0, Ny, 2), (1, Ny, 2), (2, Ny, 2), ... (Nx, Ny, 2),
- ...
- (0, Ny, Nz), (1, Ny, Nz), (2, Ny, Nz), ... (Nx, Ny, Nz)
-]
-```
+It can be created via `PseudoRandom(seed)`.
-and the array index for a position p contained completely in p1..p2 is:
+### Methods
-`(p.Z - p1.Z) * Ny * Nx + (p.Y - p1.Y) * Nx + (p.X - p1.X) + 1`
+* `next()`: return next integer random number [`0`...`32767`]
+* `next(min, max)`: return next integer random number [`min`...`max`]
+ * `((max - min) == 32767) or ((max-min) <= 6553))` must be true
+ due to the simple implementation making bad distribution otherwise.
-Note that this is the same "flat 3D array" format as
-`PerlinNoiseMap:get3dMap_flat()`.
-VoxelArea objects (see section 'VoxelArea') can be used to simplify calculation
-of the index for a single point in a flat VoxelManip array.
+`Raycast`
+---------
-##### Content IDs
-A Content ID is a unique integer identifier for a specific node type.
-These IDs are used by VoxelManip in place of the node name string for
-`VoxelManip:get_data()` and `VoxelManip:set_data()`. You can use
-`minetest.get_content_id()` to look up the Content ID for the specified node
-name, and `minetest.get_name_from_content_id()` to look up the node name string
-for a given Content ID.
-After registration of a node, its Content ID will remain the same throughout
-execution of the mod.
-Note that the node being queried needs to have already been been registered.
+A raycast on the map. It works with selection boxes.
+Can be used as an iterator in a for loop as:
-The following builtin node types have their Content IDs defined as constants:
+ local ray = Raycast(...)
+ for pointed_thing in ray do
+ ...
+ end
-* `minetest.CONTENT_UNKNOWN`: ID for "unknown" nodes
-* `minetest.CONTENT_AIR`: ID for "air" nodes
-* `minetest.CONTENT_IGNORE`: ID for "ignore" nodes
+The map is loaded as the ray advances. If the map is modified after the
+`Raycast` is created, the changes may or may not have an effect on the object.
-##### Mapgen VoxelManip objects
-Inside of `on_generated()` callbacks, it is possible to retrieve the same
-VoxelManip object used by the core's Map Generator (commonly abbreviated
-Mapgen). Most of the rules previously described still apply but with a few
-differences:
+It can be created via `Raycast(pos1, pos2, objects, liquids)` or
+`minetest.raycast(pos1, pos2, objects, liquids)` where:
-* The Mapgen VoxelManip object is retrieved using:
- `minetest.get_mapgen_object("voxelmanip")`
-* This VoxelManip object already has the region of map just generated loaded
- into it; it's not necessary to call `VoxelManip:read_from_map()` before using
- a Mapgen VoxelManip.
-* The `on_generated()` callbacks of some mods may place individual nodes in the
- generated area using non-VoxelManip map modification methods. Because the
- same Mapgen VoxelManip object is passed through each `on_generated()`
- callback, it becomes necessary for the Mapgen VoxelManip object to maintain
- consistency with the current map state. For this reason, calling any of the
- following functions:
- `minetest.add_node()`, `minetest.set_node()`, or `minetest.swap_node()`
- will also update the Mapgen VoxelManip object's internal state active on the
- current thread.
-* After modifying the Mapgen VoxelManip object's internal buffer, it may be
- necessary to update lighting information using either:
- `VoxelManip:calc_lighting()` or `VoxelManip:set_lighting()`.
+* `pos1`: start of the ray
+* `pos2`: end of the ray
+* `objects`: if false, only nodes will be returned. Default is true.
+* `liquids`: if false, liquid nodes won't be returned. Default is false.
-##### Other API functions operating on a VoxelManip
-If any VoxelManip contents were set to a liquid node,
-`VoxelManip:update_liquids()` must be called for these liquid nodes to begin
-flowing. It is recommended to call this function only after having written all
-buffered data back to the VoxelManip object, save for special situations where
-the modder desires to only have certain liquid nodes begin flowing.
+### Methods
-The functions `minetest.generate_ores()` and `minetest.generate_decorations()`
-will generate all registered decorations and ores throughout the full area
-inside of the specified VoxelManip object.
+* `next()`: returns a `pointed_thing` with exact pointing location
+ * Returns the next thing pointed by the ray or nil.
-`minetest.place_schematic_on_vmanip()` is otherwise identical to
-`minetest.place_schematic()`, except instead of placing the specified schematic
-directly on the map at the specified position, it will place the schematic
-inside the VoxelManip.
+`SecureRandom`
+--------------
-##### Notes
-* Attempting to read data from a VoxelManip object before map is read will
- result in a zero-length array table for `VoxelManip:get_data()`, and an
- "ignore" node at any position for `VoxelManip:get_node_at()`.
-* If either a region of map has not yet been generated or is out-of-bounds of
- the map, that region is filled with "ignore" nodes.
-* Other mods, or the core itself, could possibly modify the area of map
- currently loaded into a VoxelManip object. With the exception of Mapgen
- VoxelManips (see above section), the internal buffers are not updated. For
- this reason, it is strongly encouraged to complete the usage of a particular
- VoxelManip object in the same callback it had been created.
-* If a VoxelManip object will be used often, such as in an `on_generated()`
- callback, consider passing a file-scoped table as the optional parameter to
- `VoxelManip:get_data()`, which serves as a static buffer the function can use
- to write map data to instead of returning a new table each call. This greatly
- enhances performance by avoiding unnecessary memory allocations.
+Interface for the operating system's crypto-secure PRNG.
-#### Methods
-* `read_from_map(p1, p2)`: Loads a chunk of map into the VoxelManip object
- containing the region formed by `p1` and `p2`.
- * returns actual emerged `pmin`, actual emerged `pmax`
-* `write_to_map([light])`: Writes the data loaded from the `VoxelManip` back to
- the map.
- * **important**: data must be set using `VoxelManip:set_data()` before
- calling this.
- * if `light` is true, then lighting is automatically recalculated.
- The default value is true.
- If `light` is false, no light calculations happen, and you should correct
- all modified blocks with `minetest.fix_light()` as soon as possible.
- Keep in mind that modifying the map where light is incorrect can cause
- more lighting bugs.
-* `get_node_at(pos)`: Returns a `MapNode` table of the node currently loaded in
- the `VoxelManip` at that position
-* `set_node_at(pos, node)`: Sets a specific `MapNode` in the `VoxelManip` at
- that position.
-* `get_data([buffer])`: Retrieves the node content data loaded into the
- `VoxelManip` object.
- * returns raw node data in the form of an array of node content IDs
- * if the param `buffer` is present, this table will be used to store the
- result instead.
-* `set_data(data)`: Sets the data contents of the `VoxelManip` object
-* `update_map()`: Does nothing, kept for compatibility.
-* `set_lighting(light, [p1, p2])`: Set the lighting within the `VoxelManip` to
- a uniform value.
- * `light` is a table, `{day=<0...15>, night=<0...15>}`
- * To be used only by a `VoxelManip` object from
- `minetest.get_mapgen_object`.
- * (`p1`, `p2`) is the area in which lighting is set, defaults to the whole
- area if left out.
-* `get_light_data()`: Gets the light data read into the `VoxelManip` object
- * Returns an array (indices 1 to volume) of integers ranging from `0` to
- `255`.
- * Each value is the bitwise combination of day and night light values
- (`0` to `15` each).
- * `light = day + (night * 16)`
-* `set_light_data(light_data)`: Sets the `param1` (light) contents of each node
- in the `VoxelManip`.
- * expects lighting data in the same format that `get_light_data()` returns
-* `get_param2_data([buffer])`: Gets the raw `param2` data read into the
- `VoxelManip` object.
- * Returns an array (indices 1 to volume) of integers ranging from `0` to
- `255`.
- * If the param `buffer` is present, this table will be used to store the
- result instead.
-* `set_param2_data(param2_data)`: Sets the `param2` contents of each node in
- the `VoxelManip`.
-* `calc_lighting([p1, p2], [propagate_shadow])`: Calculate lighting within the
- `VoxelManip`.
- * To be used only by a `VoxelManip` object from
- `minetest.get_mapgen_object`.
- * (`p1`, `p2`) is the area in which lighting is set, defaults to the whole
- area if left out or nil.
- * `propagate_shadow` is an optional boolean deciding whether shadows in a
- generated mapchunk above are propagated down into the mapchunk, defaults
- to `true` if left out.
-* `update_liquids()`: Update liquid flow
-* `was_modified()`: Returns `true` or `false` if the data in the voxel
- manipulator had been modified since the last read from map, due to a call to
- `minetest.set_data()` on the loaded area elsewhere.
-* `get_emerged_area()`: Returns actual emerged minimum and maximum positions.
+It can be created via `SecureRandom()`. The constructor returns nil if a
+secure random device cannot be found on the system.
-### `VoxelArea`
-A helper class for voxel areas.
-It can be created via `VoxelArea:new{MinEdge=pmin, MaxEdge=pmax}`.
-The coordinates are *inclusive*, like most other things in Minetest.
+### Methods
-#### Methods
-* `getExtent()`: returns a 3D vector containing the size of the area formed by
- `MinEdge` and `MaxEdge`.
-* `getVolume()`: returns the volume of the area formed by `MinEdge` and
- `MaxEdge`.
-* `index(x, y, z)`: returns the index of an absolute position in a flat array
- starting at `1`.
- * useful for things like `VoxelManip`, raw Schematic specifiers,
- `PerlinNoiseMap:get2d`/`3dMap`, and so on.
-* `indexp(p)`: same as above, except takes a vector
-* `position(i)`: returns the absolute position vector corresponding to index
- `i`.
-* `contains(x, y, z)`: check if (`x`,`y`,`z`) is inside area formed by
- `MinEdge` and `MaxEdge`.
-* `containsp(p)`: same as above, except takes a vector
-* `containsi(i)`: same as above, except takes an index `i`
-* `iter(minx, miny, minz, maxx, maxy, maxz)`: returns an iterator that returns
- indices.
- * from (`minx`,`miny`,`minz`) to (`maxx`,`maxy`,`maxz`) in the order of
- `[z [y [x]]]`.
-* `iterp(minp, maxp)`: same as above, except takes a vector
+* `next_bytes([count])`: return next `count` (default 1, capped at 2048) many
+ random bytes, as a string.
+
+`Settings`
+----------
-### `Settings`
An interface to read config files in the format of `minetest.conf`.
It can be created via `Settings(filename)`.
-#### Methods
+### Methods
+
* `get(key)`: returns a value
* `get_bool(key, [default])`: returns a boolean
* `default` is the value returned if `key` is not found.
* Writes changes to file.
* `to_table()`: returns `{[key1]=value1,...}`
-### `Raycast`
-A raycast on the map. It works with selection boxes.
-Can be used as an iterator in a for loop.
-
-The map is loaded as the ray advances. If the
-map is modified after the `Raycast` is created,
-the changes may or may not have an effect on
-the object.
-
-It can be created via `Raycast(pos1, pos2, objects, liquids)` or
-`minetest.raycast(pos1, pos2, objects, liquids)` where:
-* `pos1`: start of the ray
-* `pos2`: end of the ray
-* `objects` : if false, only nodes will be returned. Default is true.
-* `liquids' : if false, liquid nodes won't be returned. Default is false.
-
-#### Methods
-* `next()`: returns a `pointed_thing`
- * Returns the next thing pointed by the ray or nil.
-
-Mapgen objects
---------------
-A mapgen object is a construct used in map generation. Mapgen objects can be
-used by an `on_generate` callback to speed up operations by avoiding
-unnecessary recalculations, these can be retrieved using the
-`minetest.get_mapgen_object()` function. If the requested Mapgen object is
-unavailable, or `get_mapgen_object()` was called outside of an `on_generate()`
-callback, `nil` is returned.
-
-The following Mapgen objects are currently available:
-
-### `voxelmanip`
-This returns three values; the `VoxelManip` object to be used, minimum and
-maximum emerged position, in that order. All mapgens support this object.
-
-### `heightmap`
-Returns an array containing the y coordinates of the ground levels of nodes in
-the most recently generated chunk by the current mapgen.
-
-### `biomemap`
-Returns an array containing the biome IDs of nodes in the most recently
-generated chunk by the current mapgen.
-
-### `heatmap`
-Returns an array containing the temperature values of nodes in the most
-recently generated chunk by the current mapgen.
-
-### `humiditymap`
-Returns an array containing the humidity values of nodes in the most recently
-generated chunk by the current mapgen.
-
-### `gennotify`
-Returns a table mapping requested generation notification types to arrays of
-positions at which the corresponding generated structures are located within
-the current chunk. To set the capture of positions of interest to be recorded
-on generate, use `minetest.set_gen_notify()`.
-For decorations, the returned positions are the ground surface 'place_on'
-nodes, not the decorations themselves. A 'simple' type decoration is often 1
-node above the returned position and possibly displaced by 'place_offset_y'.
-
-Possible fields of the table returned are:
-
-* `dungeon`
-* `temple`
-* `cave_begin`
-* `cave_end`
-* `large_cave_begin`
-* `large_cave_end`
-* `decoration`
-
-Decorations have a key in the format of `"decoration#id"`, where `id` is the
-numeric unique decoration ID.
-
-Registered entities
--------------------
-* Functions receive a "luaentity" as `self`:
- * It has the member `.name`, which is the registered name `("mod:thing")`
- * It has the member `.object`, which is an `ObjectRef` pointing to the
- object.
- * The original prototype stuff is visible directly via a metatable
-* Callbacks:
- * `on_activate(self, staticdata, dtime_s)`
- * Called when the object is instantiated.
- * `dtime_s` is the time passed since the object was unloaded, which can
- be used for updating the entity state.
- * `on_step(self, dtime)`
- * Called on every server tick, after movement and collision processing.
- `dtime` is usually 0.1 seconds, as per the `dedicated_server_step`
- setting `in minetest.conf`.
- * `on_punch(self, puncher, time_from_last_punch, tool_capabilities, dir)`
- * Called when somebody punches the object.
- * Note that you probably want to handle most punches using the
- automatic armor group system.
- * `puncher`: an `ObjectRef` (can be `nil`)
- * `time_from_last_punch`: Meant for disallowing spamming of clicks
- (can be `nil`).
- * `tool_capabilities`: capability table of used tool (can be `nil`)
- * `dir`: unit vector of direction of punch. Always defined. Points from
- the puncher to the punched.
- * `on_death(self, killer)`
- * Called when the object dies.
- * `killer`: an `ObjectRef` (can be `nil`)
- * `on_rightclick(self, clicker)`
- * `get_staticdata(self)`
- * Should return a string that will be passed to `on_activate` when
- the object is instantiated the next time.
-
-L-system trees
---------------
+`StorageRef`
+------------
-### Tree definition
+Mod metadata: per mod metadata, saved automatically.
+Can be obtained via `minetest.get_mod_storage()` during load time.
- treedef={
- axiom, --string initial tree axiom
- rules_a, --string rules set A
- rules_b, --string rules set B
- rules_c, --string rules set C
- rules_d, --string rules set D
- trunk, --string trunk node name
- leaves, --string leaves node name
- leaves2, --string secondary leaves node name
- leaves2_chance,--num chance (0-100) to replace leaves with leaves2
- angle, --num angle in deg
- iterations, --num max # of iterations, usually 2 -5
- random_level, --num factor to lower nr of iterations, usually 0 - 3
- trunk_type, --string single/double/crossed) type of trunk: 1 node,
- -- 2x2 nodes or 3x3 in cross shape
- thin_branches, --boolean true -> use thin (1 node) branches
- fruit, --string fruit node name
- fruit_chance, --num chance (0-100) to replace leaves with fruit node
- seed, --num random seed, if no seed is provided, the engine
- will create one.
- }
+### Methods
-### Key for Special L-System Symbols used in Axioms
+* All methods in MetaDataRef
-* `G`: move forward one unit with the pen up
-* `F`: move forward one unit with the pen down drawing trunks and branches
-* `f`: move forward one unit with the pen down drawing leaves (100% chance)
-* `T`: move forward one unit with the pen down drawing trunks only
-* `R`: move forward one unit with the pen down placing fruit
-* `A`: replace with rules set A
-* `B`: replace with rules set B
-* `C`: replace with rules set C
-* `D`: replace with rules set D
-* `a`: replace with rules set A, chance 90%
-* `b`: replace with rules set B, chance 80%
-* `c`: replace with rules set C, chance 70%
-* `d`: replace with rules set D, chance 60%
-* `+`: yaw the turtle right by `angle` parameter
-* `-`: yaw the turtle left by `angle` parameter
-* `&`: pitch the turtle down by `angle` parameter
-* `^`: pitch the turtle up by `angle` parameter
-* `/`: roll the turtle to the right by `angle` parameter
-* `*`: roll the turtle to the left by `angle` parameter
-* `[`: save in stack current state info
-* `]`: recover from stack state info
-### Example
-Spawn a small apple tree:
- pos = {x=230,y=20,z=4}
- apple_tree={
- axiom="FFFFFAFFBF",
- rules_a="[&&&FFFFF&&FFFF][&&&++++FFFFF&&FFFF][&&&----FFFFF&&FFFF]",
- rules_b="[&&&++FFFFF&&FFFF][&&&--FFFFF&&FFFF][&&&------FFFFF&&FFFF]",
- trunk="default:tree",
- leaves="default:leaves",
- angle=30,
- iterations=2,
- random_level=0,
- trunk_type="single",
- thin_branches=true,
- fruit_chance=10,
- fruit="default:apple"
- }
- minetest.spawn_tree(pos,apple_tree)
Definition tables
+=================
+
+Object properties
-----------------
-### Object Properties
+Used by `ObjectRef` methods. Part of an Entity definition.
{
hp_max = 1,
- -- ^ For players: Defaults to `minetest.PLAYER_MAX_HP_DEFAULT`
+ -- For players only. Defaults to `minetest.PLAYER_MAX_HP_DEFAULT`.
+
breath_max = 0,
- -- ^ For players only. Defaults to `minetest.PLAYER_MAX_BREATH_DEFAULT`
+ -- For players only. Defaults to `minetest.PLAYER_MAX_BREATH_DEFAULT`.
+
zoom_fov = 0.0,
- -- ^ For players only. Zoom FOV in degrees.
- -- Note that zoom loads and/or generates world beyond the server's
- -- maximum send and generate distances, so acts like a telescope.
- -- Smaller zoomFOV values increase the distance loaded and/or generated.
- -- Defaults to 15 in creative mode, 0 in survival mode.
- -- zoom_fov = 0 disables zooming for the player.
+ -- For players only. Zoom FOV in degrees.
+ -- Note that zoom loads and/or generates world beyond the server's
+ -- maximum send and generate distances, so acts like a telescope.
+ -- Smaller zoom_fov values increase the distance loaded/generated.
+ -- Defaults to 15 in creative mode, 0 in survival mode.
+ -- zoom_fov = 0 disables zooming for the player.
+
eye_height = 1.625,
- -- ^ For players only. Camera height above feet position in nodes.
- -- Defaults to 1.625.
+ -- For players only. Camera height above feet position in nodes.
+ -- Defaults to 1.625.
+
physical = true,
+
collide_with_objects = true,
- -- ^ Collide with other objects if physical = true.
+ -- Collide with other objects if physical = true
+
weight = 5,
- collisionbox = {-0.5, 0.0, -0.5, 0.5, 1.0, 0.5},
+
+ collisionbox = {-0.5, 0.0, -0.5, 0.5, 1.0, 0.5}, -- Default
selectionbox = {-0.5, 0.0, -0.5, 0.5, 1.0, 0.5},
- -- ^ Default, uses collision box dimensions when not set.
- -- ^ For both boxes: {xmin, ymin, zmin, xmax, ymax, zmax} in nodes from
- -- object position.
+ -- Selection box uses collision box dimensions when not set.
+ -- For both boxes: {xmin, ymin, zmin, xmax, ymax, zmax} in nodes from
+ -- object position.
+
pointable = true,
- -- ^ Overrides selection box when false.
- visual = "cube" / "sprite" / "upright_sprite" / "mesh" / "wielditem",
- -- ^ "cube" is a node-sized cube.
- -- ^ "sprite" is a flat texture always facing the player.
- -- ^ "upright_sprite" is a vertical flat texture.
- -- ^ "mesh" uses the defined mesh model.
- -- ^ "wielditem" is used for dropped items
- -- (see builtin/game/item_entity.lua).
- -- For this use 'textures = {itemname}'.
- -- If the item has a 'wield_image' the object will be an extrusion of
- -- that, otherwise:
- -- If 'itemname' is a cubic node or nodebox the object will appear
- -- identical to 'itemname'.
- -- If 'itemname' is a plantlike node the object will be an extrusion of
- -- its texture.
- -- Otherwise for non-node items, the object will be an extrusion of
- -- 'inventory_image'.
- visual_size = {x = 1, y = 1},
- -- ^ `x` multiplies horizontal (X and Z) visual size.
- -- ^ `y` multiplies vertical (Y) visual size.
+ -- Overrides selection box when false
+
+ visual = "cube" / "sprite" / "upright_sprite" / "mesh" / "wielditem" / "item",
+ -- "cube" is a node-sized cube.
+ -- "sprite" is a flat texture always facing the player.
+ -- "upright_sprite" is a vertical flat texture.
+ -- "mesh" uses the defined mesh model.
+ -- "wielditem" is used for dropped items.
+ -- (see builtin/game/item_entity.lua).
+ -- For this use 'textures = {itemname}'.
+ -- If the item has a 'wield_image' the object will be an extrusion of
+ -- that, otherwise:
+ -- If 'itemname' is a cubic node or nodebox the object will appear
+ -- identical to 'itemname'.
+ -- If 'itemname' is a plantlike node the object will be an extrusion
+ -- of its texture.
+ -- Otherwise for non-node items, the object will be an extrusion of
+ -- 'inventory_image'.
+ -- "item" is similar to "wielditem" but ignores the 'wield_image' parameter.
+
+ visual_size = {x = 1, y = 1, z = 1},
+ -- Multipliers for the visual size. If `z` is not specified, `x` will be used
+ -- to scale the entity along both horizontal axes.
+
mesh = "model",
+
textures = {},
- -- ^ Number of required textures depends on visual.
- -- ^ "cube" uses 6 textures in the way a node does.
- -- ^ "sprite" uses 1 texture.
- -- ^ "upright_sprite" uses 2 textures: {front, back}.
- -- ^ "wielditem" expects 'textures = {itemname}' (see 'visual' above).
+ -- Number of required textures depends on visual.
+ -- "cube" uses 6 textures just like a node, but all 6 must be defined.
+ -- "sprite" uses 1 texture.
+ -- "upright_sprite" uses 2 textures: {front, back}.
+ -- "wielditem" expects 'textures = {itemname}' (see 'visual' above).
+
colors = {},
- -- ^ Number of required colors depends on visual.
+ -- Number of required colors depends on visual
+
use_texture_alpha = false,
- -- ^ Use texture's alpha channel, excludes "upright_sprite" and "wielditem"
- -- ^ Note: currently causes visual issues when viewed through other
- -- ^ semi-transparent materials such as water.
+ -- Use texture's alpha channel.
+ -- Excludes "upright_sprite" and "wielditem".
+ -- Note: currently causes visual issues when viewed through other
+ -- semi-transparent materials such as water.
+
spritediv = {x = 1, y = 1},
- -- ^ Used with spritesheet textures for animation and/or frame selection
- -- according to position relative to player.
- -- ^ Defines the number of columns and rows in the spritesheet:
- -- {columns, rows}.
+ -- Used with spritesheet textures for animation and/or frame selection
+ -- according to position relative to player.
+ -- Defines the number of columns and rows in the spritesheet:
+ -- {columns, rows}.
+
initial_sprite_basepos = {x = 0, y = 0},
- -- ^ Used with spritesheet textures.
- -- ^ Defines the {column, row} position of the initially used frame in the
- -- spritesheet.
+ -- Used with spritesheet textures.
+ -- Defines the {column, row} position of the initially used frame in the
+ -- spritesheet.
+
is_visible = true,
+
makes_footstep_sound = false,
+
automatic_rotate = 0,
- -- ^ Set constant rotation in radians per second, positive or negative.
- -- ^ Set to 0 to disable constant rotation.
+ -- Set constant rotation in radians per second, positive or negative.
+ -- Set to 0 to disable constant rotation.
+
stepheight = 0,
+
automatic_face_movement_dir = 0.0,
- -- ^ Automatically set yaw to movement direction, offset in degrees,
- -- 'false' to disable.
+ -- Automatically set yaw to movement direction, offset in degrees.
+ -- 'false' to disable.
+
automatic_face_movement_max_rotation_per_sec = -1,
- -- ^ Limit automatic rotation to this value in degrees per second,
- -- value < 0 no limit.
+ -- Limit automatic rotation to this value in degrees per second.
+ -- No limit if value <= 0.
+
backface_culling = true,
- -- ^ Set to false to disable backface_culling for model.
+ -- Set to false to disable backface_culling for model
+
glow = 0,
- -- ^ Add this much extra lighting when calculating texture color.
- -- Value < 0 disables light's effect on texture color.
- -- For faking self-lighting, UI style entities, or programmatic coloring
- -- in mods.
+ -- Add this much extra lighting when calculating texture color.
+ -- Value < 0 disables light's effect on texture color.
+ -- For faking self-lighting, UI style entities, or programmatic coloring
+ -- in mods.
+
nametag = "",
- -- ^ By default empty, for players their name is shown if empty.
- nametag_color = <color>,
- -- ^ Sets color of nametag as ColorSpec.
+ -- By default empty, for players their name is shown if empty
+
+ nametag_color = <ColorSpec>,
+ -- Sets color of nametag
+
infotext = "",
- -- ^ By default empty, text to be shown when pointed at object.
+ -- By default empty, text to be shown when pointed at object
+
static_save = true,
- -- ^ If false, never save this object statically. It will simply be
- -- deleted when the block gets unloaded.
- -- The get_staticdata() callback is never called then.
- -- Defaults to 'true'
+ -- If false, never save this object statically. It will simply be
+ -- deleted when the block gets unloaded.
+ -- The get_staticdata() callback is never called then.
+ -- Defaults to 'true'.
}
-### Entity definition (`register_entity`)
+Entity definition
+-----------------
- {
- -- Deprecated: Everything in object properties is read directly from here
+Used by `minetest.register_entity`.
- initial_properties = --[[<initial object properties>]],
+ {
+ initial_properties = {
+ visual = "mesh",
+ mesh = "boats_boat.obj",
+ ...,
+ },
+ -- A table of object properties, see the `Object properties` section.
+ -- Object properties being read directly from the entity definition
+ -- table is deprecated. Define object properties in this
+ -- `initial_properties` table instead.
on_activate = function(self, staticdata, dtime_s),
+
on_step = function(self, dtime),
+
on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir),
+
on_rightclick = function(self, clicker),
+
get_staticdata = function(self),
- -- ^ Called sometimes; the string returned is passed to on_activate when
- -- the entity is re-activated from static state
+ -- Called sometimes; the string returned is passed to on_activate when
+ -- the entity is re-activated from static state
+
+ _custom_field = whatever,
+ -- You can define arbitrary member variables here (see Item definition
+ -- for more info) by using a '_' prefix
+ }
+
+ABM (ActiveBlockModifier) definition
+------------------------------------
+
+Used by `minetest.register_abm`.
+
+ {
+ label = "Lava cooling",
+ -- Descriptive label for profiling purposes (optional).
+ -- Definitions with identical labels will be listed as one.
+
+ nodenames = {"default:lava_source"},
+ -- Apply `action` function to these nodes.
+ -- `group:groupname` can also be used here.
+
+ neighbors = {"default:water_source", "default:water_flowing"},
+ -- Only apply `action` to nodes that have one of, or any
+ -- combination of, these neighbors.
+ -- If left out or empty, any neighbor will do.
+ -- `group:groupname` can also be used here.
+
+ interval = 1.0,
+ -- Operation interval in seconds
+
+ chance = 1,
+ -- Chance of triggering `action` per-node per-interval is 1.0 / this
+ -- value
+
+ catch_up = true,
+ -- If true, catch-up behaviour is enabled: The `chance` value is
+ -- temporarily reduced when returning to an area to simulate time lost
+ -- by the area being unattended. Note that the `chance` value can often
+ -- be reduced to 1.
+
+ action = function(pos, node, active_object_count, active_object_count_wider),
+ -- Function triggered for each qualifying node.
+ -- `active_object_count` is number of active objects in the node's
+ -- mapblock.
+ -- `active_object_count_wider` is number of active objects in the node's
+ -- mapblock plus all 26 neighboring mapblocks. If any neighboring
+ -- mapblocks are unloaded an estmate is calculated for them based on
+ -- loaded mapblocks.
+ }
+
+LBM (LoadingBlockModifier) definition
+-------------------------------------
+
+Used by `minetest.register_lbm`.
+
+ {
+ label = "Upgrade legacy doors",
+ -- Descriptive label for profiling purposes (optional).
+ -- Definitions with identical labels will be listed as one.
+
+ name = "modname:replace_legacy_door",
+
+ nodenames = {"default:lava_source"},
+ -- List of node names to trigger the LBM on.
+ -- Also non-registered nodes will work.
+ -- Groups (as of group:groupname) will work as well.
+
+ run_at_every_load = false,
+ -- Whether to run the LBM's action every time a block gets loaded,
+ -- and not just for blocks that were saved last time before LBMs were
+ -- introduced to the world.
+
+ action = function(pos, node),
+ }
+
+Tile definition
+---------------
+
+* `"image.png"`
+* `{name="image.png", animation={Tile Animation definition}}`
+* `{name="image.png", backface_culling=bool, tileable_vertical=bool,
+ tileable_horizontal=bool, align_style="node"/"world"/"user", scale=int}`
+ * backface culling enabled by default for most nodes
+ * tileable flags are info for shaders, how they should treat texture
+ when displacement mapping is used.
+ Directions are from the point of view of the tile texture,
+ not the node it's on.
+ * align style determines whether the texture will be rotated with the node
+ or kept aligned with its surroundings. "user" means that client
+ setting will be used, similar to `glasslike_framed_optional`.
+ Note: supported by solid nodes and nodeboxes only.
+ * scale is used to make texture span several (exactly `scale`) nodes,
+ instead of just one, in each direction. Works for world-aligned
+ textures only.
+ Note that as the effect is applied on per-mapblock basis, `16` should
+ be equally divisible by `scale` or you may get wrong results.
+* `{name="image.png", color=ColorSpec}`
+ * the texture's color will be multiplied with this color.
+ * the tile's color overrides the owning node's color in all cases.
+* deprecated, yet still supported field names:
+ * `image` (name)
+
+Tile animation definition
+-------------------------
+
+ {
+ type = "vertical_frames",
+
+ aspect_w = 16,
+ -- Width of a frame in pixels
- _custom_field = whatever,
- -- ^ You can define arbitrary member variables here (see item definition
- -- for more info) by using a '_' prefix.
- }
+ aspect_h = 16,
+ -- Height of a frame in pixels
-### ABM (ActiveBlockModifier) definition (`register_abm`)
+ length = 3.0,
+ -- Full loop length
+ }
{
- label = "Lava cooling",
- ^ Descriptive label for profiling purposes (optional).
- Definitions with identical labels will be listed as one.
- nodenames = {"default:lava_source"},
- ^ Apply `action` function to these nodes.
- ^ `group:groupname` can also be used here.
- neighbors = {"default:water_source", "default:water_flowing"},
- ^ Only apply `action` to nodes that have one of, or any
- combination of, these neighbors.
- ^ If left out or empty, any neighbor will do.
- ^ `group:groupname` can also be used here.
- interval = 1.0,
- ^ Operation interval in seconds.
- chance = 1,
- ^ Chance of triggering `action` per-node per-interval is 1.0 / this
- value.
- catch_up = true,
- ^ If true, catch-up behaviour is enabled: The `chance` value is
- temporarily reduced when returning to an area to simulate time lost
- by the area being unattended. Note that the `chance` value can often
- be reduced to 1.
- action = function(pos, node, active_object_count, active_object_count_wider),
- ^ Function triggered for each qualifying node.
- ^ `active_object_count` is number of active objects in the node's
- mapblock.
- ^ `active_object_count_wider` is number of active objects in the node's
- mapblock plus all 26 neighboring mapblocks. If any neighboring
- mapblocks are unloaded an estmate is calculated for them based on
- loaded mapblocks.
- }
+ type = "sheet_2d",
+
+ frames_w = 5,
+ -- Width in number of frames
-### LBM (LoadingBlockModifier) definition (`register_lbm`)
+ frames_h = 3,
+ -- Height in number of frames
- {
- label = "Upgrade legacy doors",
- -- ^ Descriptive label for profiling purposes (optional).
- -- Definitions with identical labels will be listed as one.
- name = "modname:replace_legacy_door",
- nodenames = {"default:lava_source"},
- -- ^ List of node names to trigger the LBM on.
- -- Also non-registered nodes will work.
- -- Groups (as of group:groupname) will work as well.
- run_at_every_load = false,
- -- ^ Whether to run the LBM's action every time a block gets loaded,
- -- and not just for blocks that were saved last time before LBMs were
- -- introduced to the world.
- action = func(pos, node),
+ frame_length = 0.5,
+ -- Length of a single frame
}
-### Item definition (`register_node`, `register_craftitem`, `register_tool`)
+Item definition
+---------------
+
+Used by `minetest.register_node`, `minetest.register_craftitem`, and
+`minetest.register_tool`.
{
description = "Steel Axe",
- groups = {}, -- key = name, value = rating; rating = 1..3.
- if rating not applicable, use 1.
- e.g. {wool = 1, fluffy = 3}
- {soil = 2, outerspace = 1, crumbly = 1}
- {bendy = 2, snappy = 1},
- {hard = 1, metal = 1, spikes = 1}
+
+ groups = {},
+ -- key = name, value = rating; rating = 1..3.
+ -- If rating not applicable, use 1.
+ -- e.g. {wool = 1, fluffy = 3}
+ -- {soil = 2, outerspace = 1, crumbly = 1}
+ -- {bendy = 2, snappy = 1},
+ -- {hard = 1, metal = 1, spikes = 1}
+
inventory_image = "default_tool_steelaxe.png",
+
inventory_overlay = "overlay.png",
- ^ An overlay which does not get colorized.
+ -- An overlay which does not get colorized
+
wield_image = "",
+
wield_overlay = "",
+
palette = "",
- --[[
- ^ An image file containing the palette of a node.
- ^ You can set the currently used color as the
- ^ "palette_index" field of the item stack metadata.
- ^ The palette is always stretched to fit indices
- ^ between 0 and 255, to ensure compatibility with
- ^ "colorfacedir" and "colorwallmounted" nodes.
- ]]
+ -- An image file containing the palette of a node.
+ -- You can set the currently used color as the "palette_index" field of
+ -- the item stack metadata.
+ -- The palette is always stretched to fit indices between 0 and 255, to
+ -- ensure compatibility with "colorfacedir" and "colorwallmounted" nodes.
+
color = "0xFFFFFFFF",
- ^ The color of the item. The palette overrides this.
+ -- The color of the item. The palette overrides this.
+
wield_scale = {x = 1, y = 1, z = 1},
+
stack_max = 99,
+
range = 4.0,
+
liquids_pointable = false,
+
+ -- See "Tools" section
tool_capabilities = {
full_punch_interval = 1.0,
max_drop_level = 0,
},
damage_groups = {groupname = damage},
},
+
node_placement_prediction = nil,
- --[[
- ^ If nil and item is node, prediction is made automatically
- ^ If nil and item is not a node, no prediction is made
- ^ If "" and item is anything, no prediction is made
- ^ Otherwise should be name of node which the client immediately places
- on ground when the player places the item. Server will always update
- actual result to client in a short moment.
- ]]
+ -- If nil and item is node, prediction is made automatically.
+ -- If nil and item is not a node, no prediction is made.
+ -- If "" and item is anything, no prediction is made.
+ -- Otherwise should be name of node which the client immediately places
+ -- on ground when the player places the item. Server will always update
+ -- actual result to client in a short moment.
+
node_dig_prediction = "air",
- --[[
- ^ if "", no prediction is made
- ^ if "air", node is removed
- ^ Otherwise should be name of node which the client immediately places
- upon digging. Server will always update actual result shortly.
- ]]
+ -- if "", no prediction is made.
+ -- if "air", node is removed.
+ -- Otherwise should be name of node which the client immediately places
+ -- upon digging. Server will always update actual result shortly.
+
sound = {
- breaks = "default_tool_break", -- tools only
- place = --[[<SimpleSoundSpec>]],
+ breaks = "default_tool_break", -- tools only
+ place = <SimpleSoundSpec>,
+ eat = <SimpleSoundSpec>,
},
- on_place = func(itemstack, placer, pointed_thing),
- --[[
- ^ Shall place item and return the leftover itemstack
- ^ The placer may be any ObjectRef or nil.
- ^ default: minetest.item_place ]]
- on_secondary_use = func(itemstack, user, pointed_thing),
- --[[
- ^ Same as on_place but called when pointing at nothing.
- ^ The user may be any ObjectRef or nil.
- ^ pointed_thing : always { type = "nothing" }
- ]]
- on_drop = func(itemstack, dropper, pos),
- --[[
- ^ Shall drop item and return the leftover itemstack
- ^ The dropper may be any ObjectRef or nil.
- ^ default: minetest.item_drop ]]
- on_use = func(itemstack, user, pointed_thing),
- --[[
- ^ default: nil
- ^ Function must return either nil if no item shall be removed from
- inventory, or an itemstack to replace the original itemstack.
- e.g. itemstack:take_item(); return itemstack
- ^ Otherwise, the function is free to do what it wants.
- ^ The user may be any ObjectRef or nil.
- ^ The default functions handle regular use cases.
- ]]
- after_use = func(itemstack, user, node, digparams),
- --[[
- ^ default: nil
- ^ If defined, should return an itemstack and will be called instead of
- wearing out the tool. If returns nil, does nothing.
- If after_use doesn't exist, it is the same as:
- function(itemstack, user, node, digparams)
- itemstack:add_wear(digparams.wear)
- return itemstack
- end
- ^ The user may be any ObjectRef or nil.
- ]]
+ on_place = function(itemstack, placer, pointed_thing),
+ -- Shall place item and return the leftover itemstack.
+ -- The placer may be any ObjectRef or nil.
+ -- default: minetest.item_place
+
+ on_secondary_use = function(itemstack, user, pointed_thing),
+ -- Same as on_place but called when pointing at nothing.
+ -- The user may be any ObjectRef or nil.
+ -- pointed_thing: always { type = "nothing" }
+
+ on_drop = function(itemstack, dropper, pos),
+ -- Shall drop item and return the leftover itemstack.
+ -- The dropper may be any ObjectRef or nil.
+ -- default: minetest.item_drop
+
+ on_use = function(itemstack, user, pointed_thing),
+ -- default: nil
+ -- Function must return either nil if no item shall be removed from
+ -- inventory, or an itemstack to replace the original itemstack.
+ -- e.g. itemstack:take_item(); return itemstack
+ -- Otherwise, the function is free to do what it wants.
+ -- The user may be any ObjectRef or nil.
+ -- The default functions handle regular use cases.
+
+ after_use = function(itemstack, user, node, digparams),
+ -- default: nil
+ -- If defined, should return an itemstack and will be called instead of
+ -- wearing out the tool. If returns nil, does nothing.
+ -- If after_use doesn't exist, it is the same as:
+ -- function(itemstack, user, node, digparams)
+ -- itemstack:add_wear(digparams.wear)
+ -- return itemstack
+ -- end
+ -- The user may be any ObjectRef or nil.
+
_custom_field = whatever,
- --[[
- ^ Add your own custom fields. By convention, all custom field names
- should start with `_` to avoid naming collisions with future engine
- usage.
- ]]
+ -- Add your own custom fields. By convention, all custom field names
+ -- should start with `_` to avoid naming collisions with future engine
+ -- usage.
}
-### Tile definition
-* `"image.png"`
-* `{name="image.png", animation={Tile Animation definition}}`
-* `{name="image.png", backface_culling=bool, tileable_vertical=bool,
- tileable_horizontal=bool, align_style="node"/"world"/"user", scale=int}`
- * backface culling enabled by default for most nodes
- * tileable flags are info for shaders, how they should treat texture
- when displacement mapping is used
- Directions are from the point of view of the tile texture,
- not the node it's on
- * align style determines whether the texture will be rotated with the node
- or kept aligned with its surroundings. "user" means that client
- setting will be used, similar to `glasslike_framed_optional`.
- Note: supported by solid nodes and nodeboxes only.
- * scale is used to make texture span several (exactly `scale`) nodes,
- instead of just one, in each direction. Works for world-aligned
- textures only.
- Note that as the effect is applied on per-mapblock basis, `16` should
- be equally divisible by `scale` or you may get wrong results.
-* `{name="image.png", color=ColorSpec}`
- * the texture's color will be multiplied with this color.
- * the tile's color overrides the owning node's color in all cases.
-* deprecated, yet still supported field names:
- * `image` (name)
+Node definition
+---------------
-### Tile animation definition
+Used by `minetest.register_node`.
{
- type = "vertical_frames",
- aspect_w = 16,
- -- ^ specify width of a frame in pixels
- aspect_h = 16,
- -- ^ specify height of a frame in pixels
- length = 3.0,
- -- ^ specify full loop length
- }
+ -- <all fields allowed in item definitions>,
- {
- type = "sheet_2d",
- frames_w = 5,
- -- ^ specify width in number of frames
- frames_h = 3,
- -- ^ specify height in number of frames
- frame_length = 0.5,
- -- ^ specify length of a single frame
- }
+ drawtype = "normal", -- See "Node drawtypes"
-### Node definition (`register_node`)
+ visual_scale = 1.0,
+ -- Supported for drawtypes "plantlike", "signlike", "torchlike",
+ -- "firelike", "mesh".
+ -- For plantlike and firelike, the image will start at the bottom of the
+ -- node, for the other drawtypes the image will be centered on the node.
+ -- Note that positioning for "torchlike" may still change.
- {
- -- <all fields allowed in item definitions>,
+ tiles = {tile definition 1, def2, def3, def4, def5, def6},
+ -- Textures of node; +Y, -Y, +X, -X, +Z, -Z
+ -- Old field name was 'tile_images'.
+ -- List can be shortened to needed length.
+
+ overlay_tiles = {tile definition 1, def2, def3, def4, def5, def6},
+ -- Same as `tiles`, but these textures are drawn on top of the base
+ -- tiles. You can use this to colorize only specific parts of your
+ -- texture. If the texture name is an empty string, that overlay is not
+ -- drawn. Since such tiles are drawn twice, it is not recommended to use
+ -- overlays on very common nodes.
+
+ special_tiles = {tile definition 1, Tile definition 2},
+ -- Special textures of node; used rarely.
+ -- Old field name was 'special_materials'.
+ -- List can be shortened to needed length.
+
+ color = ColorSpec,
+ -- The node's original color will be multiplied with this color.
+ -- If the node has a palette, then this setting only has an effect in
+ -- the inventory and on the wield item.
- drawtype = "normal", -- See "Node drawtypes"
- visual_scale = 1.0, --[[
- ^ Supported for drawtypes "plantlike", "signlike", "torchlike",
- ^ "firelike", "mesh".
- ^ For plantlike and firelike, the image will start at the bottom of the
- ^ node, for the other drawtypes the image will be centered on the node.
- ^ Note that positioning for "torchlike" may still change. ]]
- tiles = {tile definition 1, def2, def3, def4, def5, def6}, --[[
- ^ Textures of node; +Y, -Y, +X, -X, +Z, -Z
- ^ Old field name was 'tile_images'.
- ^ List can be shortened to needed length ]]
- overlay_tiles = {tile definition 1, def2, def3, def4, def5, def6}, --[[
- ^ Same as `tiles`, but these textures are drawn on top of the
- ^ base tiles. You can use this to colorize only specific parts of
- ^ your texture. If the texture name is an empty string, that
- ^ overlay is not drawn. Since such tiles are drawn twice, it
- ^ is not recommended to use overlays on very common nodes. ]]
- special_tiles = {tile definition 1, Tile definition 2}, --[[
- ^ Special textures of node; used rarely
- ^ Old field name was 'special_materials'.
- ^ List can be shortened to needed length ]]
- color = ColorSpec, --[[
- ^ The node's original color will be multiplied with this color.
- ^ If the node has a palette, then this setting only has an effect
- ^ in the inventory and on the wield item. ]]
use_texture_alpha = false,
- ^ Use texture's alpha channel.
- palette = "palette.png", --[[
- ^ The node's `param2` is used to select a pixel from the image
- ^ (pixels are arranged from left to right and from top to bottom).
- ^ The node's color will be multiplied with the selected pixel's
- ^ color. Tiles can override this behavior.
- ^ Only when `paramtype2` supports palettes. ]]
+ -- Use texture's alpha channel
+
+ palette = "palette.png",
+ -- The node's `param2` is used to select a pixel from the image.
+ -- Pixels are arranged from left to right and from top to bottom.
+ -- The node's color will be multiplied with the selected pixel's color.
+ -- Tiles can override this behavior.
+ -- Only when `paramtype2` supports palettes.
+
post_effect_color = "green#0F",
- ^ Screen tint if player is inside node, see "ColorSpec".
- paramtype = "none", --[[
- ^ See "Nodes".
- ^ paramtype = "light" allows light to propagate from or through the
- ^ node with light value falling by 1 per node. This line is essential
- ^ for a light source node to spread its light. ]]
- paramtype2 = "none", -- See "Nodes"
- place_param2 = nil, -- Force value for param2 when player places node
+ -- Screen tint if player is inside node, see "ColorSpec"
+
+ paramtype = "none", -- See "Nodes"
+
+ paramtype2 = "none", -- See "Nodes"
+
+ place_param2 = nil, -- Force value for param2 when player places node
+
is_ground_content = true,
- ^ If false, the cave generator will not carve through this node.
+ -- If false, the cave generator and dungeon generator will not carve
+ -- through this node.
+ -- Specifically, this stops mod-added nodes being removed by caves and
+ -- dungeons when those generate in a neighbor mapchunk and extend out
+ -- beyond the edge of that mapchunk.
+
sunlight_propagates = false,
- ^ If true, sunlight will go infinitely through this.
- walkable = true, -- If true, objects collide with node
- pointable = true, -- If true, can be pointed at
- diggable = true, -- If false, can never be dug
- climbable = false, -- If true, can be climbed on (ladder)
- buildable_to = false, -- If true, placed nodes can replace this node
- floodable = false, --[[
- ^ If true, liquids flow into and replace this node.
- ^ Warning: making a liquid node 'floodable' will cause problems. ]]
- liquidtype = "none", -- "none"/"source"/"flowing"
- liquid_alternative_flowing = "", -- Flowing version of source liquid
- liquid_alternative_source = "", -- Source version of flowing liquid
- liquid_viscosity = 0, -- Higher viscosity = slower flow (max. 7)
- liquid_renewable = true, --[[
- ^ If true, a new liquid source can be created by placing two or more
- sources nearby. ]]
- leveled = 16, --[[
- ^ Only valid for "nodebox" drawtype with 'type = "leveled"'.
- ^ Allows defining the nodebox height without using param2.
- ^ The nodebox height is 'leveled' / 64 nodes.
- ^ The maximum value of 'leveled' is 127. ]]
- liquid_range = 8, -- number of flowing nodes around source (max. 8)
+ -- If true, sunlight will go infinitely through this node
+
+ walkable = true, -- If true, objects collide with node
+
+ pointable = true, -- If true, can be pointed at
+
+ diggable = true, -- If false, can never be dug
+
+ climbable = false, -- If true, can be climbed on (ladder)
+
+ buildable_to = false, -- If true, placed nodes can replace this node
+
+ floodable = false,
+ -- If true, liquids flow into and replace this node.
+ -- Warning: making a liquid node 'floodable' will cause problems.
+
+ liquidtype = "none", -- "none" / "source" / "flowing"
+
+ liquid_alternative_flowing = "", -- Flowing version of source liquid
+
+ liquid_alternative_source = "", -- Source version of flowing liquid
+
+ liquid_viscosity = 0, -- Higher viscosity = slower flow (max. 7)
+
+ liquid_renewable = true,
+ -- If true, a new liquid source can be created by placing two or more
+ -- sources nearby
+
+ leveled = 16,
+ -- Only valid for "nodebox" drawtype with 'type = "leveled"'.
+ -- Allows defining the nodebox height without using param2.
+ -- The nodebox height is 'leveled' / 64 nodes.
+ -- The maximum value of 'leveled' is 127.
+
+ liquid_range = 8, -- Number of flowing nodes around source (max. 8)
+
drowning = 0,
- ^ Player will take this amount of damage if no bubbles are left.
- light_source = 0, --[[
- ^ Amount of light emitted by node.
- ^ To set the maximum (currently 14), use the value
- ^ 'minetest.LIGHT_MAX'.
- ^ A value outside the range 0 to minetest.LIGHT_MAX causes undefined
- ^ behavior.]]
+ -- Player will take this amount of damage if no bubbles are left
+
+ light_source = 0,
+ -- Amount of light emitted by node.
+ -- To set the maximum (14), use the value 'minetest.LIGHT_MAX'.
+ -- A value outside the range 0 to minetest.LIGHT_MAX causes undefined
+ -- behavior.
+
damage_per_second = 0,
- ^ If player is inside node, this damage is caused.
- node_box = {type="regular"}, -- See "Node boxes"
- connects_to = nodenames, --[[
- ^ Used for nodebox nodes with the type == "connected"
- ^ Specifies to what neighboring nodes connections will be drawn
- ^ e.g. `{"group:fence", "default:wood"}` or `"default:stone"` ]]
+ -- If player is inside node, this damage is caused
+
+ node_box = {type="regular"}, -- See "Node boxes"
+
+ connects_to = nodenames,
+ -- Used for nodebox nodes with the type == "connected".
+ -- Specifies to what neighboring nodes connections will be drawn.
+ -- e.g. `{"group:fence", "default:wood"}` or `"default:stone"`
+
connect_sides = { "top", "bottom", "front", "left", "back", "right" },
- -- [[
- ^ Tells connected nodebox nodes to connect only to these sides of this
- ^ node. ]]
+ -- Tells connected nodebox nodes to connect only to these sides of this
+ -- node
+
mesh = "model",
- selection_box = {type="regular"}, --[[
- ^ See "Node boxes".
- ^ If drawtype "nodebox" is used and selection_box is nil, then node_box
- ^ is used. ]]
+
+ selection_box = {
+ type = "fixed",
+ fixed = {
+ {-2 / 16, -0.5, -2 / 16, 2 / 16, 3 / 16, 2 / 16},
+ },
+ },
+ -- Custom selection box definition. Multiple boxes can be defined.
+ -- If "nodebox" drawtype is used and selection_box is nil, then node_box
+ -- definition is used for the selection box.
+
+ collision_box = {
+ type = "fixed",
+ fixed = {
+ {-2 / 16, -0.5, -2 / 16, 2 / 16, 3 / 16, 2 / 16},
+ },
+ },
+ -- Custom collision box definition. Multiple boxes can be defined.
+ -- If "nodebox" drawtype is used and collision_box is nil, then node_box
+ -- definition is used for the collision box.
+ -- Both of the boxes above are defined as:
+ -- {xmin, ymin, zmin, xmax, ymax, zmax} in nodes from node center.
+
+ -- Support maps made in and before January 2012
legacy_facedir_simple = false,
- ^ Support maps made in and before January 2012.
legacy_wallmounted = false,
- ^ Support maps made in and before January 2012.
- waving = 0, --[[
- ^ Valid for mesh, nodebox, plantlike, allfaces_optional nodes.
- ^ 1 - wave node like plants (top of node moves, bottom is fixed)
- ^ 2 - wave node like leaves (whole node moves side-to-side)
- ^ caveats: not all models will properly wave.
- ^ plantlike drawtype nodes can only wave like plants.
- ^ allfaces_optional drawtype nodes can only wave like leaves. --]]
+
+ waving = 0,
+ -- Valid for drawtypes:
+ -- mesh, nodebox, plantlike, allfaces_optional, liquid, flowingliquid.
+ -- 1 - wave node like plants (node top moves side-to-side, bottom is fixed)
+ -- 2 - wave node like leaves (whole node moves side-to-side)
+ -- 3 - wave node like liquids (whole node moves up and down)
+ -- Not all models will properly wave.
+ -- plantlike drawtype can only wave like plants.
+ -- allfaces_optional drawtype can only wave like leaves.
+ -- liquid, flowingliquid drawtypes can only wave like liquids.
+
sounds = {
footstep = <SimpleSoundSpec>,
- dig = <SimpleSoundSpec>, -- "__group" = group-based sound (default)
+ dig = <SimpleSoundSpec>, -- "__group" = group-based sound (default)
dug = <SimpleSoundSpec>,
place = <SimpleSoundSpec>,
place_failed = <SimpleSoundSpec>,
+ fall = <SimpleSoundSpec>,
},
+
drop = "",
- ^ Name of dropped node when dug. Default is the node itself.
- ^ Alternatively:
+ -- Name of dropped item when dug.
+ -- Default dropped item is the node itself.
+ -- Using a table allows multiple items, drop chances and tool filtering:
drop = {
- max_items = 1, -- Maximum number of items to drop.
- items = { -- Choose max_items randomly from this list.
+ max_items = 1,
+ -- Maximum number of item lists to drop.
+ -- The entries in 'items' are processed in order. For each:
+ -- Tool filtering is applied, chance of drop is applied, if both are
+ -- successful the entire item list is dropped.
+ -- Entry processing continues until the number of dropped item lists
+ -- equals 'max_items'.
+ -- Therefore, entries should progress from low to high drop chance.
+ items = {
+ -- Entry examples.
{
- items = {"foo:bar", "baz:frob"}, -- Items to drop.
- rarity = 1, -- Probability of dropping is 1 / rarity.
- inherit_color = true, -- To inherit palette color from the
- node.
+ -- 1 in 1000 chance of dropping a diamond.
+ -- Default rarity is '1'.
+ rarity = 1000,
+ items = {"default:diamond"},
+ },
+ {
+ -- Only drop if using a tool whose name is identical to one
+ -- of these.
+ tools = {"default:shovel_mese", "default:shovel_diamond"},
+ rarity = 5,
+ items = {"default:dirt"},
+ -- Whether all items in the dropped item list inherit the
+ -- hardware coloring palette color from the dug node.
+ -- Default is 'false'.
+ inherit_color = true,
+ },
+ {
+ -- Only drop if using a tool whose name contains
+ -- "default:shovel_".
+ tools = {"~default:shovel_"},
+ rarity = 2,
+ -- The item list dropped.
+ items = {"default:sand", "default:desert_sand"},
},
},
},
- on_construct = func(pos), --[[
- ^ Node constructor; called after adding node
- ^ Can set up metadata and stuff like that
- ^ Not called for bulk node placement (i.e. schematics and VoxelManip)
- ^ default: nil ]]
-
- on_destruct = func(pos), --[[
- ^ Node destructor; called before removing node
- ^ Not called for bulk node placement (i.e. schematics and VoxelManip)
- ^ default: nil ]]
-
- after_destruct = func(pos, oldnode), --[[
- ^ Node destructor; called after removing node
- ^ Not called for bulk node placement (i.e. schematics and VoxelManip)
- ^ default: nil ]]
-
- on_flood = func(pos, oldnode, newnode), --[[
- ^ Called when a liquid (newnode) is about to flood oldnode, if
- ^ it has `floodable = true` in the nodedef. Not called for bulk
- ^ node placement (i.e. schematics and VoxelManip) or air nodes. If
- ^ return true the node is not flooded, but on_flood callback will
- ^ most likely be called over and over again every liquid update
- ^ interval. Default: nil.
- ^ Warning: making a liquid node 'floodable' will cause problems. ]]
-
- preserve_metadata = func(pos, oldnode, oldmeta, drops) --[[
- ^ Called when oldnode is about be converted to an item, but before the
- ^ node is deleted from the world or the drops are added. This is
- ^ generally the result of either the node being dug or an attached node
- ^ becoming detached.
- ^ drops is a table of ItemStacks, so any metadata to be preserved can
- ^ be added directly to one or more of the dropped items. See
- ^ "ItemStackMetaRef".
- ^ default: nil ]]
-
- after_place_node = func(pos, placer, itemstack, pointed_thing) --[[
- ^ Called after constructing node when node was placed using
- ^ minetest.item_place_node / minetest.place_node
- ^ If return true no item is taken from itemstack
- ^ `placer` may be any valid ObjectRef or nil
- ^ default: nil ]]
-
- after_dig_node = func(pos, oldnode, oldmetadata, digger), --[[
- ^ oldmetadata is in table format
- ^ Called after destructing node when node was dug using
- ^ minetest.node_dig / minetest.dig_node
- ^ default: nil ]]
-
- can_dig = function(pos, [player]) --[[
- ^ returns true if node can be dug, or false if not
- ^ default: nil ]]
-
- on_punch = func(pos, node, puncher, pointed_thing), --[[
- ^ default: minetest.node_punch
- ^ By default: Calls minetest.register_on_punchnode callbacks ]]
-
- on_rightclick = func(pos, node, clicker, itemstack, pointed_thing),
- --[[
- ^ default: nil
- ^ itemstack will hold clicker's wielded item
- ^ Shall return the leftover itemstack
- ^ Note: pointed_thing can be nil, if a mod calls this function
- ^ This function does not get triggered by clients <=0.4.16 if the
- ^ "formspec" node metadata field is set ]]
-
- on_dig = func(pos, node, digger), --[[
- ^ default: minetest.node_dig
- ^ By default: checks privileges, wears out tool and removes node ]]
-
- on_timer = function(pos,elapsed), --[[
- ^ default: nil
- ^ called by NodeTimers, see minetest.get_node_timer and NodeTimerRef
- ^ elapsed is the total time passed since the timer was started
- ^ return true to run the timer for another cycle with the same timeout
- ^ value. ]]
-
- on_receive_fields = func(pos, formname, fields, sender), --[[
- ^ fields = {name1 = value1, name2 = value2, ...}
- ^ Called when an UI form (e.g. sign text input) returns data
- ^ default: nil ]]
-
- allow_metadata_inventory_move = func(pos, from_list, from_index, to_list, to_index, count, player),
- --[[
- ^ Called when a player wants to move items inside the inventory
- ^ Return value: number of items allowed to move ]]
-
- allow_metadata_inventory_put = func(pos, listname, index, stack, player),
- --[[
- ^ Called when a player wants to put something into the inventory
- ^ Return value: number of items allowed to put
- ^ Return value: -1: Allow and don't modify item count in inventory ]]
-
- allow_metadata_inventory_take = func(pos, listname, index, stack, player),
- --[[
- ^ Called when a player wants to take something out of the inventory
- ^ Return value: number of items allowed to take
- ^ Return value: -1: Allow and don't modify item count in inventory ]]
-
- on_metadata_inventory_move = func(pos, from_list, from_index, to_list, to_index, count, player),
- on_metadata_inventory_put = func(pos, listname, index, stack, player),
- on_metadata_inventory_take = func(pos, listname, index, stack, player),
- --[[
- ^ Called after the actual action has happened, according to what was
- ^ allowed.
- ^ No return value ]]
-
- on_blast = func(pos, intensity), --[[
- ^ intensity: 1.0 = mid range of regular TNT
- ^ If defined, called when an explosion touches the node, instead of
- removing the node ]]
+ on_construct = function(pos),
+ -- Node constructor; called after adding node.
+ -- Can set up metadata and stuff like that.
+ -- Not called for bulk node placement (i.e. schematics and VoxelManip).
+ -- default: nil
+
+ on_destruct = function(pos),
+ -- Node destructor; called before removing node.
+ -- Not called for bulk node placement.
+ -- default: nil
+
+ after_destruct = function(pos, oldnode),
+ -- Node destructor; called after removing node.
+ -- Not called for bulk node placement.
+ -- default: nil
+
+ on_flood = function(pos, oldnode, newnode),
+ -- Called when a liquid (newnode) is about to flood oldnode, if it has
+ -- `floodable = true` in the nodedef. Not called for bulk node placement
+ -- (i.e. schematics and VoxelManip) or air nodes. If return true the
+ -- node is not flooded, but on_flood callback will most likely be called
+ -- over and over again every liquid update interval.
+ -- Default: nil
+ -- Warning: making a liquid node 'floodable' will cause problems.
+
+ preserve_metadata = function(pos, oldnode, oldmeta, drops),
+ -- Called when oldnode is about be converted to an item, but before the
+ -- node is deleted from the world or the drops are added. This is
+ -- generally the result of either the node being dug or an attached node
+ -- becoming detached.
+ -- drops is a table of ItemStacks, so any metadata to be preserved can
+ -- be added directly to one or more of the dropped items. See
+ -- "ItemStackMetaRef".
+ -- default: nil
+
+ after_place_node = function(pos, placer, itemstack, pointed_thing),
+ -- Called after constructing node when node was placed using
+ -- minetest.item_place_node / minetest.place_node.
+ -- If return true no item is taken from itemstack.
+ -- `placer` may be any valid ObjectRef or nil.
+ -- default: nil
+
+ after_dig_node = function(pos, oldnode, oldmetadata, digger),
+ -- oldmetadata is in table format.
+ -- Called after destructing node when node was dug using
+ -- minetest.node_dig / minetest.dig_node.
+ -- default: nil
+
+ can_dig = function(pos, [player]),
+
+ on_punch = function(pos, node, puncher, pointed_thing),
+ -- Returns true if node can be dug, or false if not.
+ -- default: nil
+ -- default: minetest.node_punch
+ -- By default calls minetest.register_on_punchnode callbacks.
+
+ on_rightclick = function(pos, node, clicker, itemstack, pointed_thing),
+ -- default: nil
+ -- itemstack will hold clicker's wielded item.
+ -- Shall return the leftover itemstack.
+ -- Note: pointed_thing can be nil, if a mod calls this function.
+ -- This function does not get triggered by clients <=0.4.16 if the
+ -- "formspec" node metadata field is set.
+
+ on_dig = function(pos, node, digger),
+ -- default: minetest.node_dig
+ -- By default checks privileges, wears out tool and removes node.
+
+ on_timer = function(pos, elapsed),
+ -- default: nil
+ -- called by NodeTimers, see minetest.get_node_timer and NodeTimerRef.
+ -- elapsed is the total time passed since the timer was started.
+ -- return true to run the timer for another cycle with the same timeout
+ -- value.
+
+ on_receive_fields = function(pos, formname, fields, sender),
+ -- fields = {name1 = value1, name2 = value2, ...}
+ -- Called when an UI form (e.g. sign text input) returns data.
+ -- See minetest.register_on_player_receive_fields for more info.
+ -- default: nil
+
+ allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player),
+ -- Called when a player wants to move items inside the inventory.
+ -- Return value: number of items allowed to move.
+
+ allow_metadata_inventory_put = function(pos, listname, index, stack, player),
+ -- Called when a player wants to put something into the inventory.
+ -- Return value: number of items allowed to put.
+ -- Return value -1: Allow and don't modify item count in inventory.
+
+ allow_metadata_inventory_take = function(pos, listname, index, stack, player),
+ -- Called when a player wants to take something out of the inventory.
+ -- Return value: number of items allowed to take.
+ -- Return value -1: Allow and don't modify item count in inventory.
+
+ on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player),
+ on_metadata_inventory_put = function(pos, listname, index, stack, player),
+ on_metadata_inventory_take = function(pos, listname, index, stack, player),
+ -- Called after the actual action has happened, according to what was
+ -- allowed.
+ -- No return value.
+
+ on_blast = function(pos, intensity),
+ -- intensity: 1.0 = mid range of regular TNT.
+ -- If defined, called when an explosion touches the node, instead of
+ -- removing the node.
}
-### Recipe for `register_craft` (shaped)
+Crafting recipes
+----------------
+
+Used by `minetest.register_craft`.
+
+### Shaped
{
output = 'default:pick_stone',
recipe = {
{'default:cobble', 'default:cobble', 'default:cobble'},
{'', 'default:stick', ''},
- {'', 'default:stick', ''}, -- Also groups; e.g. 'group:crumbly'
+ {'', 'default:stick', ''}, -- Also groups; e.g. 'group:crumbly'
},
- replacements = --[[<optional list of item pairs,
- replace one input item with another item on crafting>]]
+ replacements = <list of item pairs>,
+ -- replacements: replace one input item with another item on crafting
+ -- (optional).
}
-### Recipe for `register_craft` (shapeless)
+### Shapeless
{
- type = "shapeless",
- output = 'mushrooms:mushroom_stew',
- recipe = {
- "mushrooms:bowl",
- "mushrooms:mushroom_brown",
- "mushrooms:mushroom_red",
- },
- replacements = --[[<optional list of item pairs,
- replace one input item with another item on crafting>]]
- }
-
-### Recipe for `register_craft` (tool repair)
+ type = "shapeless",
+ output = 'mushrooms:mushroom_stew',
+ recipe = {
+ "mushrooms:bowl",
+ "mushrooms:mushroom_brown",
+ "mushrooms:mushroom_red",
+ },
+ replacements = <list of item pairs>,
+ }
+
+### Tool repair
{
type = "toolrepair",
additional_wear = -0.02,
}
-### Recipe for `register_craft` (cooking)
+Note: Tools with group `disable_repair=1` will not repairable by this recipe.
+
+### Cooking
{
type = "cooking",
cooktime = 3,
}
-### Recipe for `register_craft` (furnace fuel)
+### Furnace fuel
{
type = "fuel",
- recipe = "default:leaves",
- burntime = 1,
+ recipe = "bucket:bucket_lava",
+ burntime = 60,
+ replacements = {{"bucket:bucket_lava", "bucket:bucket_empty"}},
}
-### Ore definition (`register_ore`)
+Ore definition
+--------------
+
+Used by `minetest.register_ore`.
- See 'Ore types' section above for essential information.
+See [Ores] section above for essential information.
{
ore_type = "scatter",
+
ore = "default:stone_with_coal",
+
ore_param2 = 3,
- -- ^ Facedir rotation. Default is 0 (unchanged rotation)
+ -- Facedir rotation. Default is 0 (unchanged rotation)
+
wherein = "default:stone",
- -- ^ a list of nodenames is supported too
+ -- A list of nodenames is supported too
+
clust_scarcity = 8 * 8 * 8,
- -- ^ Ore has a 1 out of clust_scarcity chance of spawning in a node
- -- ^ If the desired average distance between ores is 'd', set this to
- -- ^ d * d * d.
+ -- Ore has a 1 out of clust_scarcity chance of spawning in a node.
+ -- If the desired average distance between ores is 'd', set this to
+ -- d * d * d.
+
clust_num_ores = 8,
- -- ^ Number of ores in a cluster
+ -- Number of ores in a cluster
+
clust_size = 3,
- -- ^ Size of the bounding box of the cluster
- -- ^ In this example, there is a 3 * 3 * 3 cluster where 8 out of the 27
- -- ^ nodes are coal ore.
+ -- Size of the bounding box of the cluster.
+ -- In this example, there is a 3 * 3 * 3 cluster where 8 out of the 27
+ -- nodes are coal ore.
+
y_min = -31000,
y_max = 64,
- -- ^ Lower and upper limits for ore.
+ -- Lower and upper limits for ore
+
flags = "",
- -- ^ Attributes for this ore generation, see 'Ore attributes' section
- -- ^ above.
+ -- Attributes for the ore generation, see 'Ore attributes' section above
+
noise_threshold = 0.5,
- -- ^ If noise is above this threshold, ore is placed. Not needed for a
- -- ^ uniform distribution.
+ -- If noise is above this threshold, ore is placed. Not needed for a
+ -- uniform distribution.
+
noise_params = {
offset = 0,
scale = 1,
octaves = 3,
persist = 0.7
},
- -- ^ NoiseParams structure describing one of the perlin noises used for
- -- ^ ore distribution.
- -- ^ Needed by "sheet", "puff", "blob" and "vein" ores.
- -- ^ Omit from "scatter" ore for a uniform ore distribution.
- -- ^ Omit from "stratum ore for a simple horizontal strata from y_min to
- -- ^ y_max.
- biomes = {"desert", "rainforest"}
- -- ^ List of biomes in which this decoration occurs.
- -- ^ Occurs in all biomes if this is omitted, and ignored if the Mapgen
- -- ^ being used does not support biomes.
- -- ^ Can be a list of (or a single) biome names, IDs, or definitions.
+ -- NoiseParams structure describing one of the perlin noises used for
+ -- ore distribution.
+ -- Needed by "sheet", "puff", "blob" and "vein" ores.
+ -- Omit from "scatter" ore for a uniform ore distribution.
+ -- Omit from "stratum" ore for a simple horizontal strata from y_min to
+ -- y_max.
+
+ biomes = {"desert", "rainforest"},
+ -- List of biomes in which this ore occurs.
+ -- Occurs in all biomes if this is omitted, and ignored if the Mapgen
+ -- being used does not support biomes.
+ -- Can be a list of (or a single) biome names, IDs, or definitions.
+
+ -- Type-specific parameters
+
+ -- sheet
column_height_min = 1,
column_height_max = 16,
column_midpoint_factor = 0.5,
- -- ^ See 'Ore types' section above.
- -- ^ The above 3 parameters are only valid for "sheet" ore.
+
+ -- puff
np_puff_top = {
offset = 4,
scale = 2,
octaves = 3,
persist = 0.7
},
- -- ^ See 'Ore types' section above.
- -- ^ The above 2 parameters are only valid for "puff" ore.
+
+ -- vein
random_factor = 1.0,
- -- ^ See 'Ore types' section above.
- -- ^ Only valid for "vein" ore.
+
+ -- stratum
np_stratum_thickness = {
offset = 8,
scale = 4,
persist = 0.7
},
stratum_thickness = 8,
- -- ^ See 'Ore types' section above.
- -- ^ The above 2 parameters are only valid for "stratum" ore.
}
-### Biome definition (`register_biome`)
+Biome definition
+----------------
+
+Used by `minetest.register_biome`.
{
name = "tundra",
+
node_dust = "default:snow",
- -- ^ Node dropped onto upper surface after all else is generated.
+ -- Node dropped onto upper surface after all else is generated
+
node_top = "default:dirt_with_snow",
depth_top = 1,
- -- ^ Node forming surface layer of biome and thickness of this layer.
+ -- Node forming surface layer of biome and thickness of this layer
+
node_filler = "default:permafrost",
depth_filler = 3,
- -- ^ Node forming lower layer of biome and thickness of this layer.
+ -- Node forming lower layer of biome and thickness of this layer
+
node_stone = "default:bluestone",
- -- ^ Node that replaces all stone nodes between roughly y_min and y_max.
+ -- Node that replaces all stone nodes between roughly y_min and y_max.
+
node_water_top = "default:ice",
depth_water_top = 10,
- -- ^ Node forming a surface layer in seawater with the defined thickness.
+ -- Node forming a surface layer in seawater with the defined thickness
+
node_water = "",
- -- ^ Node that replaces all seawater nodes not in the defined surface
- -- ^ layer.
+ -- Node that replaces all seawater nodes not in the surface layer
+
node_river_water = "default:ice",
- -- ^ Node that replaces river water in mapgens that use
- -- ^ default:river_water.
+ -- Node that replaces river water in mapgens that use
+ -- default:river_water
+
node_riverbed = "default:gravel",
depth_riverbed = 2,
- -- ^ Node placed under river water and thickness of this layer.
+ -- Node placed under river water and thickness of this layer
+
+ node_cave_liquid = "default:lava_source",
+ node_cave_liquid = {"default:water_source", "default:lava_source"},
+ -- Nodes placed inside 50% of the medium size caves.
+ -- Multiple nodes can be specified, each cave will use a randomly
+ -- chosen node from the list.
+ -- If this field is left out or 'nil', cave liquids fall back to
+ -- classic behaviour of lava and water distributed using 3D noise.
+ -- For no cave liquid, specify "air".
+
+ node_dungeon = "default:cobble",
+ -- Node used for primary dungeon structure.
+ -- If absent, dungeon materials fall back to classic behaviour.
+ -- If present, the following two nodes are also used.
+
+ node_dungeon_alt = "default:mossycobble",
+ -- Node used for randomly-distributed alternative structure nodes.
+ -- If alternative structure nodes are not wanted leave this absent for
+ -- performance reasons.
+
+ node_dungeon_stair = "stairs:stair_cobble",
+ -- Node used for dungeon stairs.
+ -- If absent, stairs fall back to 'node_dungeon'.
+
y_max = 31000,
y_min = 1,
- -- ^ Upper and lower limits for biome.
- -- ^ Alternatively you can use xyz limits as shown below.
+ -- Upper and lower limits for biome.
+ -- Alternatively you can use xyz limits as shown below.
+
max_pos = {x = 31000, y = 128, z = 31000},
min_pos = {x = -31000, y = 9, z = -31000},
- -- ^ xyz limits for biome, an alternative to using 'y_min' and 'y_max'.
- -- ^ Biome is limited to a cuboid defined by these positions.
- -- ^ Any x, y or z field left undefined defaults to -31000 in 'min_pos' or
- -- ^ 31000 in 'max_pos'.
+ -- xyz limits for biome, an alternative to using 'y_min' and 'y_max'.
+ -- Biome is limited to a cuboid defined by these positions.
+ -- Any x, y or z field left undefined defaults to -31000 in 'min_pos' or
+ -- 31000 in 'max_pos'.
+
vertical_blend = 8,
- -- ^ Vertical distance in nodes above 'y_max' over which the biome will
- -- ^ blend with the biome above.
- -- ^ Set to 0 for no vertical blend. Defaults to 0.
+ -- Vertical distance in nodes above 'y_max' over which the biome will
+ -- blend with the biome above.
+ -- Set to 0 for no vertical blend. Defaults to 0.
+
heat_point = 0,
humidity_point = 50,
- -- ^ Characteristic temperature and humidity for the biome.
- -- ^ These values create 'biome points' on a voronoi diagram with heat and
- -- ^ humidity as axes. The resulting voronoi cells determine the
- -- ^ distribution of the biomes.
- -- ^ Heat and humidity have average values of 50, vary mostly between
- -- ^ 0 and 100 but can exceed these values.
+ -- Characteristic temperature and humidity for the biome.
+ -- These values create 'biome points' on a voronoi diagram with heat and
+ -- humidity as axes. The resulting voronoi cells determine the
+ -- distribution of the biomes.
+ -- Heat and humidity have average values of 50, vary mostly between
+ -- 0 and 100 but can exceed these values.
}
-### Decoration definition (`register_decoration`)
+Decoration definition
+---------------------
+
+See [Decoration types]. Used by `minetest.register_decoration`.
{
- deco_type = "simple", -- See "Decoration types"
+ deco_type = "simple",
+
place_on = "default:dirt_with_grass",
- -- ^ Node (or list of nodes) that the decoration can be placed on
+ -- Node (or list of nodes) that the decoration can be placed on
+
sidelen = 8,
- -- ^ Size of the square divisions of the mapchunk being generated.
- -- ^ Determines the resolution of noise variation if used.
- -- ^ If the chunk size is not evenly divisible by sidelen, sidelen is made
- -- ^ equal to the chunk size.
+ -- Size of the square divisions of the mapchunk being generated.
+ -- Determines the resolution of noise variation if used.
+ -- If the chunk size is not evenly divisible by sidelen, sidelen is made
+ -- equal to the chunk size.
+
fill_ratio = 0.02,
- -- ^ The value determines 'decorations per surface node'.
- -- ^ Used only if noise_params is not specified.
+ -- The value determines 'decorations per surface node'.
+ -- Used only if noise_params is not specified.
+ -- If >= 10.0 complete coverage is enabled and decoration placement uses
+ -- a different and much faster method.
+
noise_params = {
offset = 0,
scale = 0.45,
lacunarity = 2.0,
flags = "absvalue"
},
- -- ^ NoiseParams structure describing the perlin noise used for decoration
- -- ^ distribution.
- -- ^ A noise value is calculated for each square division and determines
- -- ^ 'decorations per surface node' within each division.
+ -- NoiseParams structure describing the perlin noise used for decoration
+ -- distribution.
+ -- A noise value is calculated for each square division and determines
+ -- 'decorations per surface node' within each division.
+ -- If the noise value >= 10.0 complete coverage is enabled and
+ -- decoration placement uses a different and much faster method.
+
biomes = {"Oceanside", "Hills", "Plains"},
- -- ^ List of biomes in which this decoration occurs. Occurs in all biomes
- -- ^ if this is omitted, and ignored if the Mapgen being used does not
- -- ^ support biomes.
- -- ^ Can be a list of (or a single) biome names, IDs, or definitions.
- y_min = -31000
- y_max = 31000
- -- ^ Lower and upper limits for decoration.
- -- ^ These parameters refer to the Y co-ordinate of the 'place_on' node.
+ -- List of biomes in which this decoration occurs. Occurs in all biomes
+ -- if this is omitted, and ignored if the Mapgen being used does not
+ -- support biomes.
+ -- Can be a list of (or a single) biome names, IDs, or definitions.
+
+ y_min = -31000,
+ y_max = 31000,
+ -- Lower and upper limits for decoration.
+ -- These parameters refer to the Y co-ordinate of the 'place_on' node.
+
spawn_by = "default:water",
- -- ^ Node (or list of nodes) that the decoration only spawns next to.
- -- ^ Checks two horizontal planes of 8 neighbouring nodes (including
- -- ^ diagonal neighbours), one plane level with the 'place_on' node and a
- -- ^ plane one node above that.
+ -- Node (or list of nodes) that the decoration only spawns next to.
+ -- Checks two horizontal planes of 8 neighbouring nodes (including
+ -- diagonal neighbours), one plane level with the 'place_on' node and a
+ -- plane one node above that.
+
num_spawn_by = 1,
- -- ^ Number of spawn_by nodes that must be surrounding the decoration
- -- ^ position to occur.
- -- ^ If absent or -1, decorations occur next to any nodes.
+ -- Number of spawn_by nodes that must be surrounding the decoration
+ -- position to occur.
+ -- If absent or -1, decorations occur next to any nodes.
+
flags = "liquid_surface, force_placement, all_floors, all_ceilings",
- -- ^ Flags for all decoration types.
- -- ^ "liquid_surface": Instead of placement on the highest solid surface
- -- ^ in a mapchunk column, placement is on the highest liquid surface.
- -- ^ Placement is disabled if solid nodes are found above the liquid
- -- ^ surface.
- -- ^ "force_placement": Nodes other than "air" and "ignore" are replaced
- -- ^ by the decoration.
- -- ^ "all_floors", "all_ceilings": Instead of placement on the highest
- -- ^ surface in a mapchunk the decoration is placed on all floor and/or
- -- ^ ceiling surfaces, for example in caves.
- -- ^ Ceiling decorations act as an inversion of floor decorations so the
- -- ^ effect of 'place_offset_y' is inverted.
- -- ^ If a single decoration registration has both flags the floor and
- -- ^ ceiling decorations will be aligned vertically and may sometimes
- -- ^ meet to form a column.
+ -- Flags for all decoration types.
+ -- "liquid_surface": Instead of placement on the highest solid surface
+ -- in a mapchunk column, placement is on the highest liquid surface.
+ -- Placement is disabled if solid nodes are found above the liquid
+ -- surface.
+ -- "force_placement": Nodes other than "air" and "ignore" are replaced
+ -- by the decoration.
+ -- "all_floors", "all_ceilings": Instead of placement on the highest
+ -- surface in a mapchunk the decoration is placed on all floor and/or
+ -- ceiling surfaces, for example in caves and dungeons.
+ -- Ceiling decorations act as an inversion of floor decorations so the
+ -- effect of 'place_offset_y' is inverted.
+ -- Y-slice probabilities do not function correctly for ceiling
+ -- schematic decorations as the behaviour is unchanged.
+ -- If a single decoration registration has both flags the floor and
+ -- ceiling decorations will be aligned vertically.
----- Simple-type parameters
+
decoration = "default:grass",
- -- ^ The node name used as the decoration.
- -- ^ If instead a list of strings, a randomly selected node from the list
- -- ^ is placed as the decoration.
+ -- The node name used as the decoration.
+ -- If instead a list of strings, a randomly selected node from the list
+ -- is placed as the decoration.
+
height = 1,
- -- ^ Decoration height in nodes.
- -- ^ If height_max is not 0, this is the lower limit of a randomly
- -- ^ selected height.
+ -- Decoration height in nodes.
+ -- If height_max is not 0, this is the lower limit of a randomly
+ -- selected height.
+
height_max = 0,
- -- ^ Upper limit of the randomly selected height.
- -- ^ If absent, the parameter 'height' is used as a constant.
+ -- Upper limit of the randomly selected height.
+ -- If absent, the parameter 'height' is used as a constant.
+
param2 = 0,
- -- ^ Param2 value of decoration nodes.
- -- ^ If param2_max is not 0, this is the lower limit of a randomly
- -- ^ selected param2.
+ -- Param2 value of decoration nodes.
+ -- If param2_max is not 0, this is the lower limit of a randomly
+ -- selected param2.
+
param2_max = 0,
- -- ^ Upper limit of the randomly selected param2.
- -- ^ If absent, the parameter 'param2' is used as a constant.
+ -- Upper limit of the randomly selected param2.
+ -- If absent, the parameter 'param2' is used as a constant.
+
place_offset_y = 0,
- -- ^ Y offset of the decoration base node relative to the standard base
- -- ^ node position.
- -- ^ Can be positive or negative. Default is 0.
- -- ^ Effect is inverted for "all_ceilings" decorations.
- -- ^ Ignored by 'y_min', 'y_max' and 'spawn_by' checks, which always refer
- -- ^ to the 'place_on' node.
+ -- Y offset of the decoration base node relative to the standard base
+ -- node position.
+ -- Can be positive or negative. Default is 0.
+ -- Effect is inverted for "all_ceilings" decorations.
+ -- Ignored by 'y_min', 'y_max' and 'spawn_by' checks, which always refer
+ -- to the 'place_on' node.
----- Schematic-type parameters
+
schematic = "foobar.mts",
- -- ^ If schematic is a string, it is the filepath relative to the current
- -- ^ working directory of the specified Minetest schematic file.
- -- ^ - OR -, could be the ID of a previously registered schematic
- -- ^ - OR -, could instead be a table containing two mandatory fields,
- -- ^ size and data, and an optional table yslice_prob:
+ -- If schematic is a string, it is the filepath relative to the current
+ -- working directory of the specified Minetest schematic file.
+ -- Could also be the ID of a previously registered schematic.
+
schematic = {
size = {x = 4, y = 6, z = 4},
data = {
...
},
},
- -- ^ See 'Schematic specifier' for details.
+ -- Alternative schematic specification by supplying a table. The fields
+ -- size and data are mandatory whereas yslice_prob is optional.
+ -- See 'Schematic specifier' for details.
+
replacements = {["oldname"] = "convert_to", ...},
+
flags = "place_center_x, place_center_y, place_center_z",
- -- ^ Flags for schematic decorations. See 'Schematic attributes'.
+ -- Flags for schematic decorations. See 'Schematic attributes'.
+
rotation = "90",
- -- ^ Rotation can be "0", "90", "180", "270", or "random".
+ -- Rotation can be "0", "90", "180", "270", or "random"
+
place_offset_y = 0,
- -- ^ If the flag 'place_center_y' is set this parameter is ignored.
- -- ^ Y offset of the schematic base node layer relative to the 'place_on'
- -- ^ node.
- -- ^ Can be positive or negative. Default is 0.
- -- ^ Effect is inverted for "all_ceilings" decorations.
- -- ^ Ignored by 'y_min', 'y_max' and 'spawn_by' checks, which always refer
- -- ^ to the 'place_on' node.
+ -- If the flag 'place_center_y' is set this parameter is ignored.
+ -- Y offset of the schematic base node layer relative to the 'place_on'
+ -- node.
+ -- Can be positive or negative. Default is 0.
+ -- Effect is inverted for "all_ceilings" decorations.
+ -- Ignored by 'y_min', 'y_max' and 'spawn_by' checks, which always refer
+ -- to the 'place_on' node.
}
-### Chat command definition (`register_chatcommand`)
+Chat command definition
+-----------------------
+
+Used by `minetest.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.
+ 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.
}
Note that in params, use of symbols is as follows:
* `()` signifies grouping. For example, when param1 and param2 are both
required, or only param3 is required: `(<param1> <param2>) | <param3>`
-### Detached inventory callbacks
+Privilege definition
+--------------------
+
+Used by `minetest.register_privilege`.
+
+ {
+ description = "Can teleport", -- Privilege description
+
+ give_to_singleplayer = false,
+ -- Whether to grant the privilege to singleplayer (default true).
+
+ give_to_admin = true,
+ -- Whether to grant the privilege to the server admin.
+ -- Uses value of 'give_to_singleplayer' by default.
+
+ on_grant = function(name, granter_name),
+ -- Called when given to player 'name' by 'granter_name'.
+ -- 'granter_name' will be nil if the priv was granted by a mod.
+
+ on_revoke = function(name, revoker_name),
+ -- Called when taken from player 'name' by 'revoker_name'.
+ -- 'revoker_name' will be nil if the priv was revoked by a mod.
+
+ -- Note that the above two callbacks will be called twice if a player is
+ -- responsible, once with the player name, and then with a nil player
+ -- name.
+ -- Return true in the above callbacks to stop register_on_priv_grant or
+ -- revoke being called.
+ }
+
+Detached inventory callbacks
+----------------------------
+
+Used by `minetest.create_detached_inventory`.
{
- allow_move = func(inv, from_list, from_index, to_list, to_index, count, player),
- -- ^ Called when a player wants to move items inside the inventory
- -- ^ Return value: number of items allowed to move
-
- allow_put = func(inv, listname, index, stack, player),
- -- ^ Called when a player wants to put something into the inventory
- -- ^ Return value: number of items allowed to put
- -- ^ Return value: -1: Allow and don't modify item count in inventory
-
- allow_take = func(inv, listname, index, stack, player),
- -- ^ Called when a player wants to take something out of the inventory
- -- ^ Return value: number of items allowed to take
- -- ^ Return value: -1: Allow and don't modify item count in inventory
-
- on_move = func(inv, from_list, from_index, to_list, to_index, count, player),
- on_put = func(inv, listname, index, stack, player),
- on_take = func(inv, listname, index, stack, player),
- -- ^ Called after the actual action has happened, according to what was
- -- ^ allowed.
- -- ^ No return value
+ allow_move = function(inv, from_list, from_index, to_list, to_index, count, player),
+ -- Called when a player wants to move items inside the inventory.
+ -- Return value: number of items allowed to move.
+
+ allow_put = function(inv, listname, index, stack, player),
+ -- Called when a player wants to put something into the inventory.
+ -- Return value: number of items allowed to put.
+ -- Return value -1: Allow and don't modify item count in inventory.
+
+ allow_take = function(inv, listname, index, stack, player),
+ -- Called when a player wants to take something out of the inventory.
+ -- Return value: number of items allowed to take.
+ -- Return value -1: Allow and don't modify item count in inventory.
+
+ on_move = function(inv, from_list, from_index, to_list, to_index, count, player),
+ on_put = function(inv, listname, index, stack, player),
+ on_take = function(inv, listname, index, stack, player),
+ -- Called after the actual action has happened, according to what was
+ -- allowed.
+ -- No return value.
}
-### HUD Definition (`hud_add`, `hud_get`)
+HUD Definition
+--------------
+
+See [HUD] section.
+
+Used by `Player:hud_add`. Returned by `Player:hud_get`.
{
- hud_elem_type = "image", -- see HUD element types
- -- ^ type of HUD element, can be either of "image", "text", "statbar",
- "inventory".
+ hud_elem_type = "image", -- See HUD element types
+ -- Type of element, can be "image", "text", "statbar", or "inventory"
+
position = {x=0.5, y=0.5},
- -- ^ Left corner position of element
+ -- Left corner position of element
+
name = "<name>",
+
scale = {x = 2, y = 2},
+
text = "<text>",
+
number = 2,
+
item = 3,
- -- ^ Selected item in inventory. 0 for no item selected.
+ -- Selected item in inventory. 0 for no item selected.
+
direction = 0,
- -- ^ Direction: 0: left-right, 1: right-left, 2: top-bottom, 3: bottom-top
+ -- Direction: 0: left-right, 1: right-left, 2: top-bottom, 3: bottom-top
+
alignment = {x=0, y=0},
- -- ^ See "HUD Element Types"
+
offset = {x=0, y=0},
- -- ^ See "HUD Element Types"
+
size = { x=100, y=100 },
- -- ^ Size of element in pixels
+ -- Size of element in pixels
}
-### Particle definition (`add_particle`)
+Particle definition
+-------------------
+
+Used by `minetest.add_particle`.
{
pos = {x=0, y=0, z=0},
velocity = {x=0, y=0, z=0},
acceleration = {x=0, y=0, z=0},
- -- ^ Spawn particle at pos with velocity and acceleration
+ -- Spawn particle at pos with velocity and acceleration
+
expirationtime = 1,
- -- ^ Disappears after expirationtime seconds
+ -- Disappears after expirationtime seconds
+
size = 1,
+ -- Scales the visual size of the particle texture.
+
collisiondetection = false,
- -- ^ collisiondetection: if true collides with physical objects
+ -- If true collides with `walkable` nodes and, depending on the
+ -- `object_collision` field, objects too.
+
collision_removal = false,
- -- ^ collision_removal: if true then particle is removed when it collides,
- -- ^ requires collisiondetection = true to have any effect
+ -- If true particle is removed when it collides.
+ -- Requires collisiondetection = true to have any effect.
+
+ object_collision = false,
+ -- If true particle collides with objects that are defined as
+ -- `physical = true,` and `collide_with_objects = true,`.
+ -- Requires collisiondetection = true to have any effect.
+
vertical = false,
- -- ^ vertical: if true faces player using y axis only
+ -- If true faces player using y axis only
+
texture = "image.png",
- -- ^ Uses texture (string)
+
playername = "singleplayer",
- -- ^ optional, if specified spawns particle only on the player's client
+ -- Optional, if specified spawns particle only on the player's client
+
animation = {Tile Animation definition},
- -- ^ optional, specifies how to animate the particle texture
+ -- Optional, specifies how to animate the particle texture
+
glow = 0
- -- ^ optional, specify particle self-luminescence in darkness
+ -- Optional, specify particle self-luminescence in darkness.
+ -- Values 0-14.
}
-### `ParticleSpawner` definition (`add_particlespawner`)
+`ParticleSpawner` definition
+----------------------------
+
+Used by `minetest.add_particlespawner`.
{
amount = 1,
+ -- Number of particles spawned over the time period `time`.
+
time = 1,
- -- ^ If time is 0 has infinite lifespan and spawns the amount on a
- -- ^ per-second basis.
+ -- Lifespan of spawner in seconds.
+ -- If time is 0 spawner has infinite lifespan and spawns the `amount` on
+ -- a per-second basis.
+
minpos = {x=0, y=0, z=0},
maxpos = {x=0, y=0, z=0},
minvel = {x=0, y=0, z=0},
maxexptime = 1,
minsize = 1,
maxsize = 1,
- -- ^ The particle's properties are random values in between the bounds:
- -- ^ minpos/maxpos, minvel/maxvel (velocity),
- -- ^ minacc/maxacc (acceleration), minsize/maxsize,
- -- ^ minexptime/maxexptime (expirationtime).
+ -- The particles' properties are random values between the min and max
+ -- values.
+ -- pos, velocity, acceleration, expirationtime, size
+
collisiondetection = false,
- -- ^ collisiondetection: if true uses collision detection
+ -- If true collide with `walkable` nodes and, depending on the
+ -- `object_collision` field, objects too.
+
collision_removal = false,
- -- ^ collision_removal: if true then particle is removed when it collides,
- -- ^ requires collisiondetection = true to have any effect
+ -- If true particles are removed when they collide.
+ -- Requires collisiondetection = true to have any effect.
+
+ object_collision = false,
+ -- If true particles collide with objects that are defined as
+ -- `physical = true,` and `collide_with_objects = true,`.
+ -- Requires collisiondetection = true to have any effect.
+
attached = ObjectRef,
- -- ^ attached: if defined, particle positions, velocities and
- -- ^ accelerations are relative to this object's position and yaw.
+ -- If defined, particle positions, velocities and accelerations are
+ -- relative to this object's position and yaw
+
vertical = false,
- -- ^ vertical: if true faces player using y axis only
+ -- If true face player using y axis only
+
texture = "image.png",
- -- ^ Uses texture (string)
- playername = "singleplayer"
- -- ^ Playername is optional, if specified spawns particle only on the
- -- ^ player's client.
+
+ playername = "singleplayer",
+ -- Optional, if specified spawns particles only on the player's client
+
animation = {Tile Animation definition},
- -- ^ optional, specifies how to animate the particle texture
+ -- Optional, specifies how to animate the particles' texture
+
glow = 0
- -- ^ optional, specify particle self-luminescence in darkness
+ -- Optional, specify particle self-luminescence in darkness.
+ -- Values 0-14.
}
-### `HTTPRequest` definition (`HTTPApiTable.fetch_async`, `HTTPApiTable.fetch_async`)
+`HTTPRequest` definition
+------------------------
+
+Used by `HTTPApiTable.fetch` and `HTTPApiTable.fetch_async`.
{
url = "http://example.org",
+
timeout = 10,
- -- ^ Timeout for connection in seconds. Default is 3 seconds.
+ -- Timeout for connection in seconds. Default is 3 seconds.
+
post_data = "Raw POST request data string" OR {field1 = "data1", field2 = "data2"},
- -- ^ Optional, if specified a POST request with post_data is performed.
- -- ^ Accepts both a string and a table. If a table is specified, encodes
- -- ^ table as x-www-form-urlencoded key-value pairs.
- -- ^ If post_data ist not specified, a GET request is performed instead.
+ -- Optional, if specified a POST request with post_data is performed.
+ -- Accepts both a string and a table. If a table is specified, encodes
+ -- table as x-www-form-urlencoded key-value pairs.
+ -- If post_data is not specified, a GET request is performed instead.
+
user_agent = "ExampleUserAgent",
- -- ^ Optional, if specified replaces the default minetest user agent with
- -- ^ given string.
+ -- Optional, if specified replaces the default minetest user agent with
+ -- given string
+
extra_headers = { "Accept-Language: en-us", "Accept-Charset: utf-8" },
- -- ^ Optional, if specified adds additional headers to the HTTP request.
- -- ^ You must make sure that the header strings follow HTTP specification
- -- ^ ("Key: Value").
+ -- Optional, if specified adds additional headers to the HTTP request.
+ -- You must make sure that the header strings follow HTTP specification
+ -- ("Key: Value").
+
multipart = boolean
- -- ^ Optional, if true performs a multipart HTTP request.
- -- ^ Default is false.
+ -- Optional, if true performs a multipart HTTP request.
+ -- Default is false.
}
-### `HTTPRequestResult` definition (`HTTPApiTable.fetch` callback, `HTTPApiTable.fetch_async_get`)
+`HTTPRequestResult` definition
+------------------------------
+
+Passed to `HTTPApiTable.fetch` callback. Returned by
+`HTTPApiTable.fetch_async_get`.
{
completed = true,
- -- ^ If true, the request has finished (either succeeded, failed or timed
- out).
+ -- If true, the request has finished (either succeeded, failed or timed
+ -- out)
+
succeeded = true,
- -- ^ If true, the request was successful
+ -- If true, the request was successful
+
timeout = false,
- -- ^ If true, the request timed out
+ -- If true, the request timed out
+
code = 200,
- -- ^ HTTP status code
+ -- HTTP status code
+
data = "response"
}
-### Authentication handler definition
+Authentication handler definition
+---------------------------------
+
+Used by `minetest.register_authentication_handler`.
{
- get_auth = func(name),
- -- ^ Get authentication data for existing player `name` (`nil` if player
- doesn't exist).
- -- ^ returns following structure:
- -- ^ `{password=<string>, privileges=<table>, last_login=<number or nil>}`
- create_auth = func(name, password),
- -- ^ Create new auth data for player `name`
- -- ^ Note that `password` is not plain-text but an arbitrary
- -- ^ representation decided by the engine
- delete_auth = func(name),
- -- ^ Delete auth data of player `name`, returns boolean indicating success
- -- ^ (false if player nonexistant).
- set_password = func(name, password),
- -- ^ Set password of player `name` to `password`
- Auth data should be created if not present
- set_privileges = func(name, privileges),
- -- ^ Set privileges of player `name`
- -- ^ `privileges` is in table form, auth data should be created if not
- -- ^ present.
- reload = func(),
- -- ^ Reload authentication data from the storage location
- -- ^ Returns boolean indicating success
- record_login = func(name),
- -- ^ Called when player joins, used for keeping track of last_login
- iterate = func(),
- -- ^ Returns an iterator (use with `for` loops) for all player names
- -- ^ currently in the auth database.
+ get_auth = function(name),
+ -- Get authentication data for existing player `name` (`nil` if player
+ -- doesn't exist).
+ -- Returns following structure:
+ -- `{password=<string>, privileges=<table>, last_login=<number or nil>}`
+
+ create_auth = function(name, password),
+ -- Create new auth data for player `name`.
+ -- Note that `password` is not plain-text but an arbitrary
+ -- representation decided by the engine.
+
+ delete_auth = function(name),
+ -- Delete auth data of player `name`.
+ -- Returns boolean indicating success (false if player is nonexistent).
+
+ set_password = function(name, password),
+ -- Set password of player `name` to `password`.
+ -- Auth data should be created if not present.
+
+ set_privileges = function(name, privileges),
+ -- Set privileges of player `name`.
+ -- `privileges` is in table form, auth data should be created if not
+ -- present.
+
+ reload = function(),
+ -- Reload authentication data from the storage location.
+ -- Returns boolean indicating success.
+
+ record_login = function(name),
+ -- Called when player joins, used for keeping track of last_login
+
+ iterate = function(),
+ -- Returns an iterator (use with `for` loops) for all player names
+ -- currently in the auth database
}
projects / oweals / minetest.git / blobdiff