1 Minetest Lua Modding API Reference
2 ==================================
4 * More information at <http://www.minetest.net/>
5 * Developer Wiki: <http://dev.minetest.net/>
6 * (Unofficial) Minetest Modding Book by rubenwardy: <https://rubenwardy.com/minetest_modding_book/>
11 Content and functionality can be added to Minetest using Lua scripting
12 in run-time loaded mods.
14 A mod is a self-contained bunch of scripts, textures and other related
15 things, which is loaded by and interfaces with Minetest.
17 Mods are contained and ran solely on the server side. Definitions and media
18 files are automatically transferred to the client.
20 If you see a deficiency in the API, feel free to attempt to add the
21 functionality in the engine and API, and to document it here.
26 If you have any difficulty in understanding this, please read
27 [Programming in Lua](http://www.lua.org/pil/).
32 Mods are loaded during server startup from the mod load paths by running
33 the `init.lua` scripts in a shared environment.
38 * `RUN_IN_PLACE=1` (Windows release, local build)
39 * `$path_user`: `<build directory>`
40 * `$path_share`: `<build directory>`
41 * `RUN_IN_PLACE=0`: (Linux release)
43 * Linux: `/usr/share/minetest`
44 * Windows: `<install directory>/minetest-0.4.x`
46 * Linux: `$HOME/.minetest`
47 * Windows: `C:/users/<user>/AppData/minetest` (maybe)
55 Games are looked up from:
57 * `$path_share/games/<gameid>/`
58 * `$path_user/games/<gameid>/`
60 Where `<gameid>` is unique to each game.
62 The game directory can contain the following files:
64 * `game.conf`, with the following keys:
65 * `name`: Required, human readable name e.g. `name = Minetest`
66 * `description`: Short description to be shown in the content tab
67 * `disallowed_mapgens = <comma-separated mapgens>`
68 e.g. `disallowed_mapgens = v5,v6,flat`
69 These mapgens are removed from the list of mapgens for the game.
71 Used to set default settings when running this game.
73 In the same format as the one in builtin.
74 This settingtypes.txt will be parsed by the menu and the settings will be
75 displayed in the "Games" category in the advanced settings tab.
76 * If the game contains a folder called `textures` the server will load it as a
77 texturepack, overriding mod textures.
78 Any server texturepack will override mod textures and the game texturepack.
83 Games can provide custom main menu images. They are put inside a `menu`
84 directory inside the game directory.
86 The images are named `$identifier.png`, where `$identifier` is one of
87 `overlay`, `background`, `footer`, `header`.
88 If you want to specify multiple images for one identifier, add additional
89 images named like `$identifier.$n.png`, with an ascending number $n starting
90 with 1, and a random image will be chosen from the provided ones.
101 Paths are relative to the directories listed in the [Paths] section above.
103 * `games/<gameid>/mods/`
105 * `worlds/<worldname>/worldmods/`
110 It is possible to include a game in a world; in this case, no mods or
111 games are loaded or checked from anywhere else.
113 This is useful for e.g. adventure worlds and happens if the `<worldname>/game/`
116 Mods should then be placed in `<worldname>/game/mods/`.
121 Mods can be put in a subdirectory, if the parent directory, which otherwise
122 should be a mod, contains a file named `modpack.conf`.
123 The file is a key-value store of modpack details.
125 * `name`: The modpack name.
126 * `description`: Description of mod to be shown in the Mods tab of the main
129 Note: to support 0.4.x, please also create an empty modpack.txt file.
131 Mod directory structure
132 -----------------------
138 │ ├── settingtypes.txt
142 │ │ ├── modname_stuff.png
143 │ │ └── modname_something_else.png
152 The location of this directory can be fetched by using
153 `minetest.get_modpath(modname)`.
157 A `Settings` file that provides meta information about the mod.
159 * `name`: The mod name. Allows Minetest to determine the mod name even if the
160 folder is wrongly named.
161 * `description`: Description of mod to be shown in the Mods tab of the main
163 * `depends`: A comma separated list of dependencies. These are mods that must be
164 loaded before this mod.
165 * `optional_depends`: A comma separated list of optional dependencies.
166 Like a dependency, but no error if the mod doesn't exist.
168 Note: to support 0.4.x, please also provide depends.txt.
172 A screenshot shown in the mod manager within the main menu. It should
173 have an aspect ratio of 3:2 and a minimum size of 300×200 pixels.
177 **Deprecated:** you should use mod.conf instead.
179 This file is used if there are no dependencies in mod.conf.
181 List of mods that have to be loaded before loading this mod.
183 A single line contains a single modname.
185 Optional dependencies can be defined by appending a question mark
186 to a single modname. This means that if the specified mod
187 is missing, it does not prevent this mod from being loaded.
189 ### `description.txt`
191 **Deprecated:** you should use mod.conf instead.
193 This file is used if there is no description in mod.conf.
195 A file containing a description to be shown in the Mods tab of the main menu.
197 ### `settingtypes.txt`
199 The format is documented in `builtin/settingtypes.txt`.
200 It is parsed by the main menu settings dialogue to list mod-specific
201 settings in the "Mods" category.
205 The main Lua script. Running this script should register everything it
206 wants to register. Subsequent execution depends on minetest calling the
207 registered callbacks.
209 `minetest.settings` can be used to read custom or existing settings at load
210 time, if necessary. (See [`Settings`])
214 Models for entities or meshnodes.
216 ### `textures`, `sounds`, `media`
218 Media files (textures, sounds, whatever) that will be transferred to the
219 client and will be available for use by the mod.
223 Translation files for the clients. (See [Translations])
228 Registered names should generally be in this format:
232 `<whatever>` can have these characters:
236 This is to prevent conflicting names from corrupting maps and is
237 enforced by the mod loader.
239 Registered names can be overridden by prefixing the name with `:`. This can
240 be used for overriding the registrations of some other mod.
242 The `:` prefix can also be used for maintaining backwards compatibility.
246 In the mod `experimental`, there is the ideal item/node/entity name `tnt`.
247 So the name should be `experimental:tnt`.
249 Any mod can redefine `experimental:tnt` by using the name
253 when registering it. That mod is required to have `experimental` as a
262 Aliases of itemnames can be added by using
263 `minetest.register_alias(alias, original_name)` or
264 `minetest.register_alias_force(alias, original_name)`.
266 This adds an alias `alias` for the item called `original_name`.
267 From now on, you can use `alias` to refer to the item `original_name`.
269 The only difference between `minetest.register_alias` and
270 `minetest.register_alias_force` is that if an item named `alias` already exists,
271 `minetest.register_alias` will do nothing while
272 `minetest.register_alias_force` will unregister it.
274 This can be used for maintaining backwards compatibility.
276 This can also set quick access names for things, e.g. if
277 you have an item called `epiclylongmodname:stuff`, you could do
279 minetest.register_alias("stuff", "epiclylongmodname:stuff")
281 and be able to use `/giveme stuff`.
286 In a game, a certain number of these must be set to tell core mapgens which
287 of the game's nodes are to be used for core mapgen generation. For example:
289 minetest.register_alias("mapgen_stone", "default:stone")
291 ### Aliases for non-V6 mapgens
293 #### Essential aliases
296 * mapgen_water_source
297 * mapgen_river_water_source
299 `mapgen_river_water_source` is required for mapgens with sloping rivers where
300 it is necessary to have a river liquid node with a short `liquid_range` and
301 `liquid_renewable = false` to avoid flooding.
303 #### Optional aliases
307 Fallback lava node used if cave liquids are not defined in biome definitions.
308 Deprecated for non-V6 mapgens, define cave liquids in biome definitions instead.
312 Fallback node used if dungeon nodes are not defined in biome definitions.
313 Deprecated for non-V6 mapgens, define dungeon nodes in biome definitions instead.
315 ### Aliases needed for Mapgen V6
318 * mapgen_water_source
321 * mapgen_dirt_with_grass
324 * mapgen_desert_stone
326 * mapgen_dirt_with_snow
335 * mapgen_jungleleaves
338 * mapgen_pine_needles
341 * mapgen_stair_cobble
343 * mapgen_stair_desert_stone
345 ### Setting the node used in Mapgen Singlenode
347 By default the world is filled with air nodes. To set a different node use, for
350 minetest.register_alias("mapgen_singlenode", "default:stone")
358 Mods should generally prefix their textures with `modname_`, e.g. given
359 the mod name `foomod`, a texture could be called:
363 Textures are referred to by their complete name, or alternatively by
364 stripping out the file extension:
366 * e.g. `foomod_foothing.png`
367 * e.g. `foomod_foothing`
372 There are various texture modifiers that can be used
373 to generate textures on-the-fly.
375 ### Texture overlaying
377 Textures can be overlaid by putting a `^` between them.
381 default_dirt.png^default_grass_side.png
383 `default_grass_side.png` is overlaid over `default_dirt.png`.
384 The texture with the lower resolution will be automatically upscaled to
385 the higher resolution texture.
389 Textures can be grouped together by enclosing them in `(` and `)`.
391 Example: `cobble.png^(thing1.png^thing2.png)`
393 A texture for `thing1.png^thing2.png` is created and the resulting
394 texture is overlaid on top of `cobble.png`.
398 Modifiers that accept texture names (e.g. `[combine`) accept escaping to allow
399 passing complex texture names as arguments. Escaping is done with backslash and
400 is required for `^` and `:`.
402 Example: `cobble.png^[lowpart:50:color.png\^[mask\:trans.png`
404 The lower 50 percent of `color.png^[mask:trans.png` are overlaid
405 on top of `cobble.png`.
407 ### Advanced texture modifiers
413 * `[crack:<t>:<n>:<p>`
414 * `[cracko:<t>:<n>:<p>`
418 * `<t>`: tile count (in each direction)
419 * `<n>`: animation frame count
420 * `<p>`: current animation frame
422 Draw a step of the crack animation on the texture.
423 `crack` draws it normally, while `cracko` lays it over, keeping transparent
428 default_cobble.png^[crack:10:1
430 #### `[combine:<w>x<h>:<x1>,<y1>=<file1>:<x2>,<y2>=<file2>:...`
436 * `<file>`: texture to combine
438 Creates a texture of size `<w>` times `<h>` and blits the listed files to their
439 specified coordinates.
443 [combine:16x32:0,0=default_cobble.png:0,16=default_wood.png
445 #### `[resize:<w>x<h>`
447 Resizes the texture to the given dimensions.
451 default_sandstone.png^[resize:16x16
455 Makes the base image transparent according to the given ratio.
457 `r` must be between 0 (transparent) and 255 (opaque).
461 default_sandstone.png^[opacity:127
463 #### `[invert:<mode>`
465 Inverts the given channels of the base image.
466 Mode may contain the characters "r", "g", "b", "a".
467 Only the channels that are mentioned in the mode string will be inverted.
471 default_apple.png^[invert:rgb
475 Brightens the texture.
479 tnt_tnt_side.png^[brighten
483 Makes the texture completely opaque.
487 default_leaves.png^[noalpha
489 #### `[makealpha:<r>,<g>,<b>`
491 Convert one color to transparency.
495 default_cobble.png^[makealpha:128,128,128
499 * `<t>`: transformation(s) to apply
501 Rotates and/or flips the image.
503 `<t>` can be a number (between 0 and 7) or a transform name.
504 Rotations are counter-clockwise.
507 1 R90 rotate by 90 degrees
508 2 R180 rotate by 180 degrees
509 3 R270 rotate by 270 degrees
511 5 FXR90 flip X then rotate by 90 degrees
513 7 FYR90 flip Y then rotate by 90 degrees
517 default_stone.png^[transformFXR90
519 #### `[inventorycube{<top>{<left>{<right>`
521 Escaping does not apply here and `^` is replaced by `&` in texture names
524 Create an inventory cube texture using the side textures.
528 [inventorycube{grass.png{dirt.png&grass_side.png{dirt.png&grass_side.png
530 Creates an inventorycube with `grass.png`, `dirt.png^grass_side.png` and
531 `dirt.png^grass_side.png` textures
533 #### `[lowpart:<percent>:<file>`
535 Blit the lower `<percent>`% part of `<file>` on the texture.
539 base.png^[lowpart:25:overlay.png
541 #### `[verticalframe:<t>:<n>`
543 * `<t>`: animation frame count
544 * `<n>`: current animation frame
546 Crops the texture to a frame of a vertical animation.
550 default_torch_animated.png^[verticalframe:16:8
554 Apply a mask to the base image.
556 The mask is applied using binary AND.
558 #### `[sheet:<w>x<h>:<x>,<y>`
560 Retrieves a tile at position x,y from the base image
561 which it assumes to be a tilesheet with dimensions w,h.
563 #### `[colorize:<color>:<ratio>`
565 Colorize the textures with the given color.
566 `<color>` is specified as a `ColorString`.
567 `<ratio>` is an int ranging from 0 to 255 or the word "`alpha`". If
568 it is an int, then it specifies how far to interpolate between the
569 colors where 0 is only the texture color and 255 is only `<color>`. If
570 omitted, the alpha of `<color>` will be used as the ratio. If it is
571 the word "`alpha`", then each texture pixel will contain the RGB of
572 `<color>` and the alpha of `<color>` multiplied by the alpha of the
575 #### `[multiply:<color>`
577 Multiplies texture colors with the given color.
578 `<color>` is specified as a `ColorString`.
579 Result is more like what you'd expect if you put a color on top of another
580 color, meaning white surfaces get a lot of your new color while black parts
581 don't change very much.
586 The goal of hardware coloring is to simplify the creation of
587 colorful nodes. If your textures use the same pattern, and they only
588 differ in their color (like colored wool blocks), you can use hardware
589 coloring instead of creating and managing many texture files.
590 All of these methods use color multiplication (so a white-black texture
591 with red coloring will result in red-black color).
595 This method is useful if you wish to create nodes/items with
596 the same texture, in different colors, each in a new node/item definition.
600 When you register an item or node, set its `color` field (which accepts a
601 `ColorSpec`) to the desired color.
603 An `ItemStack`'s static color can be overwritten by the `color` metadata
604 field. If you set that field to a `ColorString`, that color will be used.
608 Each tile may have an individual static color, which overwrites every
609 other coloring method. To disable the coloring of a face,
610 set its color to white (because multiplying with white does nothing).
611 You can set the `color` property of the tiles in the node's definition
612 if the tile is in table format.
616 For nodes and items which can have many colors, a palette is more
617 suitable. A palette is a texture, which can contain up to 256 pixels.
618 Each pixel is one possible color for the node/item.
619 You can register one node/item, which can have up to 256 colors.
621 #### Palette indexing
623 When using palettes, you always provide a pixel index for the given
624 node or `ItemStack`. The palette is read from left to right and from
625 top to bottom. If the palette has less than 256 pixels, then it is
626 stretched to contain exactly 256 pixels (after arranging the pixels
627 to one line). The indexing starts from 0.
631 * 16x16 palette, index = 0: the top left corner
632 * 16x16 palette, index = 4: the fifth pixel in the first row
633 * 16x16 palette, index = 16: the pixel below the top left corner
634 * 16x16 palette, index = 255: the bottom right corner
635 * 2 (width) x 4 (height) palette, index = 31: the top left corner.
636 The palette has 8 pixels, so each pixel is stretched to 32 pixels,
637 to ensure the total 256 pixels.
638 * 2x4 palette, index = 32: the top right corner
639 * 2x4 palette, index = 63: the top right corner
640 * 2x4 palette, index = 64: the pixel below the top left corner
642 #### Using palettes with items
644 When registering an item, set the item definition's `palette` field to
645 a texture. You can also use texture modifiers.
647 The `ItemStack`'s color depends on the `palette_index` field of the
648 stack's metadata. `palette_index` is an integer, which specifies the
649 index of the pixel to use.
651 #### Linking palettes with nodes
653 When registering a node, set the item definition's `palette` field to
654 a texture. You can also use texture modifiers.
655 The node's color depends on its `param2`, so you also must set an
656 appropriate `paramtype2`:
658 * `paramtype2 = "color"` for nodes which use their full `param2` for
659 palette indexing. These nodes can have 256 different colors.
660 The palette should contain 256 pixels.
661 * `paramtype2 = "colorwallmounted"` for nodes which use the first
662 five bits (most significant) of `param2` for palette indexing.
663 The remaining three bits are describing rotation, as in `wallmounted`
664 paramtype2. Division by 8 yields the palette index (without stretching the
665 palette). These nodes can have 32 different colors, and the palette
666 should contain 32 pixels.
668 * `param2 = 17` is 2 * 8 + 1, so the rotation is 1 and the third (= 2 + 1)
669 pixel will be picked from the palette.
670 * `param2 = 35` is 4 * 8 + 3, so the rotation is 3 and the fifth (= 4 + 1)
671 pixel will be picked from the palette.
672 * `paramtype2 = "colorfacedir"` for nodes which use the first
673 three bits of `param2` for palette indexing. The remaining
674 five bits are describing rotation, as in `facedir` paramtype2.
675 Division by 32 yields the palette index (without stretching the
676 palette). These nodes can have 8 different colors, and the
677 palette should contain 8 pixels.
679 * `param2 = 17` is 0 * 32 + 17, so the rotation is 17 and the
680 first (= 0 + 1) pixel will be picked from the palette.
681 * `param2 = 35` is 1 * 32 + 3, so the rotation is 3 and the
682 second (= 1 + 1) pixel will be picked from the palette.
684 To colorize a node on the map, set its `param2` value (according
685 to the node's paramtype2).
687 ### Conversion between nodes in the inventory and on the map
689 Static coloring is the same for both cases, there is no need
692 If the `ItemStack`'s metadata contains the `color` field, it will be
693 lost on placement, because nodes on the map can only use palettes.
695 If the `ItemStack`'s metadata contains the `palette_index` field, it is
696 automatically transferred between node and item forms by the engine,
697 when a player digs or places a colored node.
698 You can disable this feature by setting the `drop` field of the node
699 to itself (without metadata).
700 To transfer the color to a special drop, you need a drop table.
704 minetest.register_node("mod:stone", {
705 description = "Stone",
706 tiles = {"default_stone.png"},
707 paramtype2 = "color",
708 palette = "palette.png",
711 -- assume that mod:cobblestone also has the same palette
712 {items = {"mod:cobblestone"}, inherit_color = true },
717 ### Colored items in craft recipes
719 Craft recipes only support item strings, but fortunately item strings
720 can also contain metadata. Example craft recipe registration:
722 minetest.register_craft({
723 output = minetest.itemstring_with_palette("wool:block", 3),
731 To set the `color` field, you can use `minetest.itemstring_with_color`.
733 Metadata field filtering in the `recipe` field are not supported yet,
734 so the craft output is independent of the color of the ingredients.
739 Sometimes hardware coloring is not enough, because it affects the
740 whole tile. Soft texture overlays were added to Minetest to allow
741 the dynamic coloring of only specific parts of the node's texture.
742 For example a grass block may have colored grass, while keeping the
745 These overlays are 'soft', because unlike texture modifiers, the layers
746 are not merged in the memory, but they are simply drawn on top of each
747 other. This allows different hardware coloring, but also means that
748 tiles with overlays are drawn slower. Using too much overlays might
751 For inventory and wield images you can specify overlays which
752 hardware coloring does not modify. You have to set `inventory_overlay`
753 and `wield_overlay` fields to an image name.
755 To define a node overlay, simply set the `overlay_tiles` field of the node
756 definition. These tiles are defined in the same way as plain tiles:
757 they can have a texture name, color etc.
758 To skip one face, set that overlay tile to an empty string.
760 Example (colored grass block):
762 minetest.register_node("default:dirt_with_grass", {
763 description = "Dirt with Grass",
764 -- Regular tiles, as usual
765 -- The dirt tile disables palette coloring
766 tiles = {{name = "default_grass.png"},
767 {name = "default_dirt.png", color = "white"}},
768 -- Overlay tiles: define them in the same style
769 -- The top and bottom tile does not have overlay
770 overlay_tiles = {"", "",
771 {name = "default_grass_side.png", tileable_vertical = false}},
772 -- Global color, used in inventory
774 -- Palette in the world
775 paramtype2 = "color",
776 palette = "default_foilage.png",
785 Only Ogg Vorbis files are supported.
787 For positional playing of sounds, only single-channel (mono) files are
788 supported. Otherwise OpenAL will play them non-positionally.
790 Mods should generally prefix their sounds with `modname_`, e.g. given
791 the mod name "`foomod`", a sound could be called:
795 Sounds are referred to by their name with a dot, a single digit and the
796 file extension stripped out. When a sound is played, the actual sound file
797 is chosen randomly from the matching sounds.
799 When playing the sound `foomod_foosound`, the sound is chosen randomly
800 from the available ones of the following files:
802 * `foomod_foosound.ogg`
803 * `foomod_foosound.0.ogg`
804 * `foomod_foosound.1.ogg`
806 * `foomod_foosound.9.ogg`
808 Examples of sound parameter tables:
810 -- Play locationless on all clients
812 gain = 1.0, -- default
813 fade = 0.0, -- default, change to a value > 0 to fade the sound in
814 pitch = 1.0, -- default
816 -- Play locationless to one player
819 gain = 1.0, -- default
820 fade = 0.0, -- default, change to a value > 0 to fade the sound in
821 pitch = 1.0, -- default
823 -- Play locationless to one player, looped
826 gain = 1.0, -- default
829 -- Play in a location
831 pos = {x = 1, y = 2, z = 3},
832 gain = 1.0, -- default
833 max_hear_distance = 32, -- default, uses an euclidean metric
835 -- Play connected to an object, looped
837 object = <an ObjectRef>,
838 gain = 1.0, -- default
839 max_hear_distance = 32, -- default, uses an euclidean metric
843 Looped sounds must either be connected to an object or played locationless to
844 one player using `to_player = name,`.
846 A positional sound will only be heard by players that are within
847 `max_hear_distance` of the sound position, at the start of the sound.
853 * e.g. `"default_place_node"`
855 * e.g. `{name = "default_place_node"}`
856 * e.g. `{name = "default_place_node", gain = 1.0}`
857 * e.g. `{name = "default_place_node", gain = 1.0, pitch = 1.0}`
863 These sound files are played back by the engine if provided.
865 * `main_menu`: Looped sound in the main menu (gain = 1.0)
866 * `player_damage`: Played when the local player takes damage (gain = 0.5)
867 * `player_falling_damage`: Played when the local player takes
868 damage by falling (gain = 0.5)
871 Registered definitions
872 ======================
874 Anything added using certain [Registration functions] gets added to one or more
875 of the global [Registered definition tables].
877 Note that in some cases you will stumble upon things that are not contained
878 in these tables (e.g. when a mod has been removed). Always check for
879 existence before trying to access the fields.
883 All nodes register with `minetest.register_node` get added to the table
884 `minetest.registered_nodes`.
886 If you want to check the drawtype of a node, you could do:
888 local function get_nodedef_field(nodename, fieldname)
889 if not minetest.registered_nodes[nodename] then
892 return minetest.registered_nodes[nodename][fieldname]
894 local drawtype = get_nodedef_field(nodename, "drawtype")
902 Nodes are the bulk data of the world: cubes and other things that take the
903 space of a cube. Huge amounts of them are handled efficiently, but they
906 The definition of a node is stored and can be accessed by using
908 minetest.registered_nodes[node.name]
910 See [Registered definitions].
912 Nodes are passed by value between Lua and the engine.
913 They are represented by a table:
915 {name="name", param1=num, param2=num}
917 `param1` and `param2` are 8-bit integers ranging from 0 to 255. The engine uses
918 them for certain automated functions. If you don't use these functions, you can
919 use them to store arbitrary values.
924 The functions of `param1` and `param2` are determined by certain fields in the
927 `param1` is reserved for the engine when `paramtype != "none"`:
929 * `paramtype = "light"`
930 * The value stores light with and without sun in its upper and lower 4 bits
932 * Required by a light source node to enable spreading its light.
933 * Required by the following drawtypes as they determine their visual
934 brightness from their internal light value:
945 `param2` is reserved for the engine when any of these are used:
947 * `liquidtype = "flowing"`
948 * The level and some flags of the liquid is stored in `param2`
949 * `drawtype = "flowingliquid"`
950 * The drawn liquid level is read from `param2`
951 * `drawtype = "torchlike"`
952 * `drawtype = "signlike"`
953 * `paramtype2 = "wallmounted"`
954 * The rotation of the node is stored in `param2`. You can make this value
955 by using `minetest.dir_to_wallmounted()`.
956 * `paramtype2 = "facedir"`
957 * The rotation of the node is stored in `param2`. Furnaces and chests are
958 rotated this way. Can be made by using `minetest.dir_to_facedir()`.
959 * Values range 0 - 23
960 * facedir / 4 = axis direction:
961 0 = y+, 1 = z+, 2 = z-, 3 = x+, 4 = x-, 5 = y-
962 * facedir modulo 4 = rotation around that axis
963 * `paramtype2 = "leveled"`
964 * Only valid for "nodebox" with 'type = "leveled"', and "plantlike_rooted".
966 * The level of the top face of the nodebox is stored in `param2`.
967 * The other faces are defined by 'fixed = {}' like 'type = "fixed"'
969 * The nodebox height is (`param2` / 64) nodes.
970 * The maximum accepted value of `param2` is 127.
972 * The height of the 'plantlike' section is stored in `param2`.
973 * The height is (`param2` / 16) nodes.
974 * `paramtype2 = "degrotate"`
975 * Only valid for "plantlike". The rotation of the node is stored in
977 * Values range 0 - 179. The value stored in `param2` is multiplied by two to
978 get the actual rotation in degrees of the node.
979 * `paramtype2 = "meshoptions"`
980 * Only valid for "plantlike". The value of `param2` becomes a bitfield which
981 can be used to change how the client draws plantlike nodes.
982 * Bits 0, 1 and 2 form a mesh selector.
983 Currently the following meshes are choosable:
984 * 0 = a "x" shaped plant (ordinary plant)
985 * 1 = a "+" shaped plant (just rotated 45 degrees)
986 * 2 = a "*" shaped plant with 3 faces instead of 2
987 * 3 = a "#" shaped plant with 4 faces instead of 2
988 * 4 = a "#" shaped plant with 4 faces that lean outwards
989 * 5-7 are unused and reserved for future meshes.
990 * Bits 3 through 7 are optional flags that can be combined and give these
992 * bit 3 (0x08) - Makes the plant slightly vary placement horizontally
993 * bit 4 (0x10) - Makes the plant mesh 1.4x larger
994 * bit 5 (0x20) - Moves each face randomly a small bit down (1/8 max)
995 * bits 6-7 are reserved for future use.
996 * `paramtype2 = "color"`
997 * `param2` tells which color is picked from the palette.
998 The palette should have 256 pixels.
999 * `paramtype2 = "colorfacedir"`
1000 * Same as `facedir`, but with colors.
1001 * The first three bits of `param2` tells which color is picked from the
1002 palette. The palette should have 8 pixels.
1003 * `paramtype2 = "colorwallmounted"`
1004 * Same as `wallmounted`, but with colors.
1005 * The first five bits of `param2` tells which color is picked from the
1006 palette. The palette should have 32 pixels.
1007 * `paramtype2 = "glasslikeliquidlevel"`
1008 * Only valid for "glasslike_framed" or "glasslike_framed_optional"
1010 * `param2` values 0-63 define 64 levels of internal liquid, 0 being empty
1012 * Liquid texture is defined using `special_tiles = {"modname_tilename.png"}`
1014 Nodes can also contain extra data. See [Node Metadata].
1019 There are a bunch of different looking node types.
1021 Look for examples in `games/minimal` or `games/minetest_game`.
1024 * A node-sized cube.
1026 * Invisible, uses no texture.
1028 * The cubic source node for a liquid.
1030 * The flowing version of a liquid, appears with various heights and slopes.
1032 * Often used for partially-transparent nodes.
1033 * Only external sides of textures are visible.
1034 * `glasslike_framed`
1035 * All face-connected nodes are drawn as one volume within a surrounding
1037 * The frame appearance is generated from the edges of the first texture
1038 specified in `tiles`. The width of the edges used are 1/16th of texture
1039 size: 1 pixel for 16x16, 2 pixels for 32x32 etc.
1040 * The glass 'shine' (or other desired detail) on each node face is supplied
1041 by the second texture specified in `tiles`.
1042 * `glasslike_framed_optional`
1043 * This switches between the above 2 drawtypes according to the menu setting
1046 * Often used for partially-transparent nodes.
1047 * External and internal sides of textures are visible.
1048 * `allfaces_optional`
1049 * Often used for leaves nodes.
1050 * This switches between `normal`, `glasslike` and `allfaces` according to
1051 the menu setting: Opaque Leaves / Simple Leaves / Fancy Leaves.
1052 * With 'Simple Leaves' selected, the texture specified in `special_tiles`
1053 is used instead, if present. This allows a visually thicker texture to be
1054 used to compensate for how `glasslike` reduces visual thickness.
1056 * A single vertical texture.
1057 * If placed on top of a node, uses the first texture specified in `tiles`.
1058 * If placed against the underside of a node, uses the second texture
1059 specified in `tiles`.
1060 * If placed on the side of a node, uses the third texture specified in
1061 `tiles` and is perpendicular to that node.
1063 * A single texture parallel to, and mounted against, the top, underside or
1066 * Two vertical and diagonal textures at right-angles to each other.
1067 * See `paramtype2 = "meshoptions"` above for other options.
1069 * When above a flat surface, appears as 6 textures, the central 2 as
1070 `plantlike` plus 4 more surrounding those.
1071 * If not above a surface the central 2 do not appear, but the texture
1072 appears against the faces of surrounding nodes if they are present.
1074 * A 3D model suitable for a wooden fence.
1075 * One placed node appears as a single vertical post.
1076 * Adjacently-placed nodes cause horizontal bars to appear between them.
1078 * Often used for tracks for mining carts.
1079 * Requires 4 textures to be specified in `tiles`, in order: Straight,
1080 curved, t-junction, crossing.
1081 * Each placed node automatically switches to a suitable rotated texture
1082 determined by the adjacent `raillike` nodes, in order to create a
1083 continuous track network.
1084 * Becomes a sloping node if placed against stepped nodes.
1086 * Often used for stairs and slabs.
1087 * Allows defining nodes consisting of an arbitrary number of boxes.
1088 * See [Node boxes] below for more information.
1090 * Uses models for nodes.
1091 * Tiles should hold model materials textures.
1092 * Only static meshes are implemented.
1093 * For supported model formats see Irrlicht engine documentation.
1094 * `plantlike_rooted`
1095 * Enables underwater `plantlike` without air bubbles around the nodes.
1096 * Consists of a base cube at the co-ordinates of the node plus a
1097 `plantlike` extension above with a height of `param2 / 16` nodes.
1098 * The `plantlike` extension visually passes through any nodes above the
1099 base cube without affecting them.
1100 * The base cube texture tiles are defined as normal, the `plantlike`
1101 extension uses the defined special tile, for example:
1102 `special_tiles = {{name = "default_papyrus.png", tileable_vertical = true}},`
1104 `*_optional` drawtypes need less rendering time if deactivated
1105 (always client-side).
1110 Node selection boxes are defined using "node boxes".
1112 A nodebox is defined as any of:
1115 -- A normal cube; the default in most things
1119 -- A fixed box (or boxes) (facedir param2 is used, if applicable)
1121 fixed = box OR {box1, box2, ...}
1124 -- A variable height box (or boxes) with the top face position defined
1125 -- by the node parameter 'leveled = ', or if 'paramtype2 == "leveled"'
1127 -- Other faces are defined by 'fixed = {}' as with 'type = "fixed"'.
1129 fixed = box OR {box1, box2, ...}
1132 -- A box like the selection box for torches
1133 -- (wallmounted param2 is used, if applicable)
1134 type = "wallmounted",
1140 -- A node that has optional boxes depending on neighbouring nodes'
1141 -- presence and type. See also `connects_to`.
1143 fixed = box OR {box1, box2, ...}
1144 connect_top = box OR {box1, box2, ...}
1145 connect_bottom = box OR {box1, box2, ...}
1146 connect_front = box OR {box1, box2, ...}
1147 connect_left = box OR {box1, box2, ...}
1148 connect_back = box OR {box1, box2, ...}
1149 connect_right = box OR {box1, box2, ...}
1150 -- The following `disconnected_*` boxes are the opposites of the
1151 -- `connect_*` ones above, i.e. when a node has no suitable neighbour
1152 -- on the respective side, the corresponding disconnected box is drawn.
1153 disconnected_top = box OR {box1, box2, ...}
1154 disconnected_bottom = box OR {box1, box2, ...}
1155 disconnected_front = box OR {box1, box2, ...}
1156 disconnected_left = box OR {box1, box2, ...}
1157 disconnected_back = box OR {box1, box2, ...}
1158 disconnected_right = box OR {box1, box2, ...}
1159 disconnected = box OR {box1, box2, ...} -- when there is *no* neighbour
1160 disconnected_sides = box OR {box1, box2, ...} -- when there are *no*
1161 -- neighbours to the sides
1164 A `box` is defined as:
1166 {x1, y1, z1, x2, y2, z2}
1168 A box of a regular node would look like:
1170 {-0.5, -0.5, -0.5, 0.5, 0.5, 0.5},
1175 Map terminology and coordinates
1176 ===============================
1178 Nodes, mapblocks, mapchunks
1179 ---------------------------
1181 A 'node' is the fundamental cubic unit of a world and appears to a player as
1182 roughly 1x1x1 meters in size.
1184 A 'mapblock' (often abbreviated to 'block') is 16x16x16 nodes and is the
1185 fundamental region of a world that is stored in the world database, sent to
1186 clients and handled by many parts of the engine.
1187 'mapblock' is preferred terminology to 'block' to help avoid confusion with
1188 'node', however 'block' often appears in the API.
1190 A 'mapchunk' (sometimes abbreviated to 'chunk') is usually 5x5x5 mapblocks
1191 (80x80x80 nodes) and is the volume of world generated in one operation by
1193 The size in mapblocks has been chosen to optimise map generation.
1198 ### Orientation of axes
1200 For node and mapblock coordinates, +X is East, +Y is up, +Z is North.
1202 ### Node coordinates
1204 Almost all positions used in the API use node coordinates.
1206 ### Mapblock coordinates
1208 Occasionally the API uses 'blockpos' which refers to mapblock coordinates that
1209 specify a particular mapblock.
1210 For example blockpos (0,0,0) specifies the mapblock that extends from
1211 node position (0,0,0) to node position (15,15,15).
1213 #### Converting node position to the containing blockpos
1215 To calculate the blockpos of the mapblock that contains the node at 'nodepos',
1218 * blockpos = math.floor(nodepos / 16)
1220 #### Converting blockpos to min/max node positions
1222 To calculate the min/max node positions contained in the mapblock at 'blockpos',
1226 nodepos = blockpos * 16
1228 nodepos = blockpos * 16 + 15
1239 The position field is used for all element types.
1241 To account for differing resolutions, the position coordinates are the
1242 percentage of the screen, ranging in value from `0` to `1`.
1244 The name field is not yet used, but should contain a description of what the
1245 HUD element represents. The direction field is the direction in which something
1248 `0` draws from left to right, `1` draws from right to left, `2` draws from
1249 top to bottom, and `3` draws from bottom to top.
1251 The `alignment` field specifies how the item will be aligned. It is a table
1252 where `x` and `y` range from `-1` to `1`, with `0` being central. `-1` is
1253 moved to the left/up, and `1` is to the right/down. Fractional values can be
1256 The `offset` field specifies a pixel offset from the position. Contrary to
1257 position, the offset is not scaled to screen size. This allows for some
1258 precisely positioned items in the HUD.
1260 **Note**: `offset` _will_ adapt to screen DPI as well as user defined scaling
1263 Below are the specific uses for fields in each type; fields not listed for that
1268 Displays an image on the HUD.
1270 * `scale`: The scale of the image, with 1 being the original texture size.
1271 Only the X coordinate scale is used (positive values).
1272 Negative values represent that percentage of the screen it
1273 should take; e.g. `x=-100` means 100% (width).
1274 * `text`: The name of the texture that is displayed.
1275 * `alignment`: The alignment of the image.
1276 * `offset`: offset in pixels from position.
1280 Displays text on the HUD.
1282 * `scale`: Defines the bounding rectangle of the text.
1283 A value such as `{x=100, y=100}` should work.
1284 * `text`: The text to be displayed in the HUD element.
1285 * `number`: An integer containing the RGB value of the color used to draw the
1286 text. Specify `0xFFFFFF` for white text, `0xFF0000` for red, and so on.
1287 * `alignment`: The alignment of the text.
1288 * `offset`: offset in pixels from position.
1292 Displays a horizontal bar made up of half-images.
1294 * `text`: The name of the texture that is used.
1295 * `number`: The number of half-textures that are displayed.
1296 If odd, will end with a vertically center-split texture.
1298 * `offset`: offset in pixels from position.
1299 * `size`: If used, will force full-image size to this value (override texture
1304 * `text`: The name of the inventory list to be displayed.
1305 * `number`: Number of items in the inventory to be displayed.
1306 * `item`: Position of item that is selected.
1308 * `offset`: offset in pixels from position.
1312 Displays distance to selected world position.
1314 * `name`: The name of the waypoint.
1315 * `text`: Distance suffix. Can be blank.
1316 * `number:` An integer containing the RGB value of the color used to draw the
1318 * `world_pos`: World position of the waypoint.
1323 Representations of simple things
1324 ================================
1329 {x=num, y=num, z=num}
1331 For helper functions see [Spatial Vectors].
1336 * `{type="nothing"}`
1337 * `{type="node", under=pos, above=pos}`
1338 * Indicates a pointed node selection box.
1339 * `under` refers to the node position behind the pointed face.
1340 * `above` refers to the node position in front of the pointed face.
1341 * `{type="object", ref=ObjectRef}`
1343 Exact pointing location (currently only `Raycast` supports these fields):
1345 * `pointed_thing.intersection_point`: The absolute world coordinates of the
1346 point on the selection box which is pointed at. May be in the selection box
1347 if the pointer is in the box too.
1348 * `pointed_thing.box_id`: The ID of the pointed selection box (counting starts
1350 * `pointed_thing.intersection_normal`: Unit vector, points outwards of the
1351 selected selection box. This specifies which face is pointed at.
1352 Is a null vector `{x = 0, y = 0, z = 0}` when the pointer is inside the
1358 Flag Specifier Format
1359 =====================
1361 Flags using the standardized flag specifier format can be specified in either
1362 of two ways, by string or table.
1364 The string format is a comma-delimited set of flag names; whitespace and
1365 unrecognized flag fields are ignored. Specifying a flag in the string sets the
1366 flag, and specifying a flag prefixed by the string `"no"` explicitly
1367 clears the flag from whatever the default may be.
1369 In addition to the standard string flag format, the schematic flags field can
1370 also be a table of flag names to boolean values representing whether or not the
1371 flag is set. Additionally, if a field with the flag name prefixed with `"no"`
1372 is present, mapped to a boolean of any value, the specified flag is unset.
1374 E.g. A flag field of value
1376 {place_center_x = true, place_center_y=false, place_center_z=true}
1380 {place_center_x = true, noplace_center_y=true, place_center_z=true}
1382 which is equivalent to
1384 "place_center_x, noplace_center_y, place_center_z"
1388 "place_center_x, place_center_z"
1390 since, by default, no schematic attributes are set.
1401 There are three kinds of items: nodes, tools and craftitems.
1403 * Node: Can be placed in the world's voxel grid
1404 * Tool: Has a wear property but cannot be stacked. The default use action is to
1405 dig nodes or hit objects according to its tool capabilities.
1406 * Craftitem: Cannot dig nodes or be placed
1411 All item stacks have an amount between 0 and 65535. It is 1 by
1412 default. Tool item stacks can not have an amount greater than 1.
1414 Tools use a wear (damage) value ranging from 0 to 65535. The
1415 value 0 is the default and is used for unworn tools. The values
1416 1 to 65535 are used for worn tools, where a higher value stands for
1417 a higher wear. Non-tools always have a wear value of 0.
1422 Items and item stacks can exist in three formats: Serializes, table format
1425 When an item must be passed to a function, it can usually be in any of
1430 This is called "stackstring" or "itemstring". It is a simple string with
1431 1-3 components: the full item identifier, an optional amount and an optional
1434 <identifier> [<amount>[ <wear>]]
1438 * `'default:apple'`: 1 apple
1439 * `'default:dirt 5'`: 5 dirt
1440 * `'default:pick_stone'`: a new stone pickaxe
1441 * `'default:pick_wood 1 21323'`: a wooden pickaxe, ca. 1/3 worn out
1449 {name="default:dirt", count=5, wear=0, metadata=""}
1451 A wooden pick about 1/3 worn out:
1453 {name="default:pick_wood", count=1, wear=21323, metadata=""}
1457 {name="default:apple", count=1, wear=0, metadata=""}
1461 A native C++ format with many helper methods. Useful for converting
1462 between formats. See the [Class reference] section for details.
1470 In a number of places, there is a group table. Groups define the
1471 properties of a thing (item, node, armor of entity, capabilities of
1472 tool) in such a way that the engine and other mods can can interact with
1473 the thing without actually knowing what the thing is.
1478 Groups are stored in a table, having the group names with keys and the
1479 group ratings as values. For example:
1482 groups = {crumbly=3, soil=1}
1484 -- A more special dirt-kind of thing
1485 groups = {crumbly=2, soil=1, level=2, outerspace=1}
1487 Groups always have a rating associated with them. If there is no
1488 useful meaning for a rating for an enabled group, it shall be `1`.
1490 When not defined, the rating of a group defaults to `0`. Thus when you
1491 read groups, you must interpret `nil` and `0` as the same value, `0`.
1493 You can read the rating of a group for an item or a node by using
1495 minetest.get_item_group(itemname, groupname)
1500 Groups of items can define what kind of an item it is (e.g. wool).
1505 In addition to the general item things, groups are used to define whether
1506 a node is destroyable and how long it takes to destroy by a tool.
1511 For entities, groups are, as of now, used only for calculating damage.
1512 The rating is the percentage of damage caused by tools with this damage group.
1513 See [Entity damage mechanism].
1515 object.get_armor_groups() --> a group-rating table (e.g. {fleshy=100})
1516 object.set_armor_groups({fleshy=30, cracky=80})
1521 Groups in tools define which groups of nodes and entities they are
1524 Groups in crafting recipes
1525 --------------------------
1527 An example: Make meat soup from any meat, any water and any bowl:
1530 output = 'food:meat_soup_raw',
1536 -- preserve = {'group:bowl'}, -- Not implemented yet (TODO)
1539 Another example: Make red wool from white wool and red dye:
1543 output = 'wool:red',
1544 recipe = {'wool:white', 'group:dye,basecolor_red'},
1550 The asterisk `(*)` after a group name describes that there is no engine
1551 functionality bound to it, and implementation is left up as a suggestion
1554 ### Node, item and tool groups
1556 * `not_in_creative_inventory`: (*) Special group for inventory mods to indicate
1557 that the item should be hidden in item lists.
1560 ### Node-only groups
1562 * `attached_node`: if the node under it is not a walkable block the node will be
1563 dropped as an item. If the node is wallmounted the wallmounted direction is
1565 * `bouncy`: value is bounce speed in percent
1566 * `connect_to_raillike`: makes nodes of raillike drawtype with same group value
1567 connect to each other
1568 * `dig_immediate`: Player can always pick up node without reducing tool wear
1569 * `2`: the node always gets the digging time 0.5 seconds (rail, sign)
1570 * `3`: the node always gets the digging time 0 seconds (torch)
1571 * `disable_jump`: Player (and possibly other things) cannot jump from node
1572 * `fall_damage_add_percent`: damage speed = `speed * (1 + value/100)`
1573 * `falling_node`: if there is no walkable block under the node it will fall
1574 * `float`: the node will not fall through liquids
1575 * `level`: Can be used to give an additional sense of progression in the game.
1576 * A larger level will cause e.g. a weapon of a lower level make much less
1577 damage, and get worn out much faster, or not be able to get drops
1578 from destroyed nodes.
1579 * `0` is something that is directly accessible at the start of gameplay
1580 * There is no upper limit
1581 * See also: `leveldiff` in [Tools]
1582 * `slippery`: Players and items will slide on the node.
1583 Slipperiness rises steadily with `slippery` value, starting at 1.
1586 ### Tool-only groups
1588 * `disable_repair`: If set to 1 for a tool, it cannot be repaired using the
1589 `"toolrepair"` crafting recipe
1592 ### `ObjectRef` groups
1594 * `immortal`: Skips all damage and breath handling for an object. This group
1595 will also hide the integrated HUD status bars for players, and is
1596 automatically set to all players when damage is disabled on the server.
1597 * `punch_operable`: For entities; disables the regular damage mechanism for
1598 players punching it by hand or a non-tool item, so that it can do something
1599 else than take damage.
1603 Known damage and digging time defining groups
1604 ---------------------------------------------
1606 * `crumbly`: dirt, sand
1607 * `cracky`: tough but crackable stuff like stone.
1608 * `snappy`: something that can be cut using fine tools; e.g. leaves, small
1609 plants, wire, sheets of metal
1610 * `choppy`: something that can be cut using force; e.g. trees, wooden planks
1611 * `fleshy`: Living things like animals and the player. This could imply
1612 some blood effects when hitting.
1613 * `explody`: Especially prone to explosions
1614 * `oddly_breakable_by_hand`:
1615 Can be added to nodes that shouldn't logically be breakable by the
1616 hand but are. Somewhat similar to `dig_immediate`, but times are more
1617 like `{[1]=3.50,[2]=2.00,[3]=0.70}` and this does not override the
1618 speed of a tool if the tool can dig at a faster speed than this
1619 suggests for the hand.
1621 Examples of custom groups
1622 -------------------------
1624 Item groups are often used for defining, well, _groups of items_.
1626 * `meat`: any meat-kind of a thing (rating might define the size or healing
1627 ability or be irrelevant -- it is not defined as of yet)
1628 * `eatable`: anything that can be eaten. Rating might define HP gain in half
1630 * `flammable`: can be set on fire. Rating might define the intensity of the
1631 fire, affecting e.g. the speed of the spreading of an open fire.
1632 * `wool`: any wool (any origin, any color)
1633 * `metal`: any metal
1634 * `weapon`: any weapon
1635 * `heavy`: anything considerably heavy
1637 Digging time calculation specifics
1638 ----------------------------------
1640 Groups such as `crumbly`, `cracky` and `snappy` are used for this
1641 purpose. Rating is `1`, `2` or `3`. A higher rating for such a group implies
1642 faster digging time.
1644 The `level` group is used to limit the toughness of nodes a tool can dig
1645 and to scale the digging times / damage to a greater extent.
1647 **Please do understand this**, otherwise you cannot use the system to it's
1650 Tools define their properties by a list of parameters for groups. They
1651 cannot dig other groups; thus it is important to use a standard bunch of
1652 groups to enable interaction with tools.
1665 * Full punch interval
1666 * Maximum drop level
1667 * For an arbitrary list of groups:
1668 * Uses (until the tool breaks)
1669 * Maximum level (usually `0`, `1`, `2` or `3`)
1673 ### Full punch interval
1675 When used as a weapon, the tool will do full damage if this time is spent
1676 between punches. If e.g. half the time is spent, the tool will do half
1679 ### Maximum drop level
1681 Suggests the maximum level of node, when dug with the tool, that will drop
1682 it's useful item. (e.g. iron ore to drop a lump of iron).
1684 This is not automated; it is the responsibility of the node definition
1689 Determines how many uses the tool has when it is used for digging a node,
1690 of this group, of the maximum level. For lower leveled nodes, the use count
1691 is multiplied by `3^leveldiff`.
1692 `leveldiff` is the difference of the tool's `maxlevel` `groupcaps` and the
1693 node's `level` group. The node cannot be dug if `leveldiff` is less than zero.
1695 * `uses=10, leveldiff=0`: actual uses: 10
1696 * `uses=10, leveldiff=1`: actual uses: 30
1697 * `uses=10, leveldiff=2`: actual uses: 90
1701 Tells what is the maximum level of a node of this group that the tool will
1706 List of digging times for different ratings of the group, for nodes of the
1709 For example, as a Lua table, `times={2=2.00, 3=0.70}`. This would
1710 result in the tool to be able to dig nodes that have a rating of `2` or `3`
1711 for this group, and unable to dig the rating `1`, which is the toughest.
1712 Unless there is a matching group that enables digging otherwise.
1714 If the result digging time is 0, a delay of 0.15 seconds is added between
1715 digging nodes; If the player releases LMB after digging, this delay is set to 0,
1716 i.e. players can more quickly click the nodes away instead of holding LMB.
1720 List of damage for groups of entities. See [Entity damage mechanism].
1722 Example definition of the capabilities of a tool
1723 ------------------------------------------------
1725 tool_capabilities = {
1726 full_punch_interval=1.5,
1729 crumbly={maxlevel=2, uses=20, times={[1]=1.60, [2]=1.20, [3]=0.80}}
1731 damage_groups = {fleshy=2},
1734 This makes the tool be able to dig nodes that fulfil both of these:
1736 * Have the `crumbly` group
1737 * Have a `level` group less or equal to `2`
1739 Table of resulting digging times:
1741 crumbly 0 1 2 3 4 <- level
1743 1 0.80 1.60 1.60 - -
1744 2 0.60 1.20 1.20 - -
1745 3 0.40 0.80 0.80 - -
1747 level diff: 2 1 0 -1 -2
1749 Table of resulting tool uses:
1758 * At `crumbly==0`, the node is not diggable.
1759 * At `crumbly==3`, the level difference digging time divider kicks in and makes
1760 easy nodes to be quickly breakable.
1761 * At `level > 2`, the node is not diggable, because it's `level > maxlevel`
1766 Entity damage mechanism
1767 =======================
1772 foreach group in cap.damage_groups:
1773 damage += cap.damage_groups[group]
1774 * limit(actual_interval / cap.full_punch_interval, 0.0, 1.0)
1775 * (object.armor_groups[group] / 100.0)
1776 -- Where object.armor_groups[group] is 0 for inexistent values
1779 Client predicts damage based on damage groups. Because of this, it is able to
1780 give an immediate response when an entity is damaged or dies; the response is
1781 pre-defined somehow (e.g. by defining a sprite animation) (not implemented;
1783 Currently a smoke puff will appear when an entity dies.
1785 The group `immortal` completely disables normal damage.
1787 Entities can define a special armor group, which is `punch_operable`. This
1788 group disables the regular damage mechanism for players punching it by hand or
1789 a non-tool item, so that it can do something else than take damage.
1791 On the Lua side, every punch calls:
1793 entity:on_punch(puncher, time_from_last_punch, tool_capabilities, direction,
1796 This should never be called directly, because damage is usually not handled by
1799 * `puncher` is the object performing the punch. Can be `nil`. Should never be
1800 accessed unless absolutely required, to encourage interoperability.
1801 * `time_from_last_punch` is time from last punch (by `puncher`) or `nil`.
1802 * `tool_capabilities` can be `nil`.
1803 * `direction` is a unit vector, pointing from the source of the punch to
1805 * `damage` damage that will be done to entity
1806 Return value of this function will determine if damage is done by this function
1807 (retval true) or shall be done by engine (retval false)
1809 To punch an entity/object in Lua, call:
1811 object:punch(puncher, time_from_last_punch, tool_capabilities, direction)
1813 * Return value is tool wear.
1814 * Parameters are equal to the above callback.
1815 * If `direction` equals `nil` and `puncher` does not equal `nil`, `direction`
1816 will be automatically filled in based on the location of `puncher`.
1827 The instance of a node in the world normally only contains the three values
1828 mentioned in [Nodes]. However, it is possible to insert extra data into a node.
1829 It is called "node metadata"; See `NodeMetaRef`.
1831 Node metadata contains two things:
1836 Some of the values in the key-value store are handled specially:
1838 * `formspec`: Defines a right-click inventory menu. See [Formspec].
1839 * `infotext`: Text shown on the screen when the node is pointed at
1843 local meta = minetest.get_meta(pos)
1844 meta:set_string("formspec",
1846 "list[context;main;0,0;8,4;]"..
1847 "list[current_player;main;0,5;8,4;]")
1848 meta:set_string("infotext", "Chest");
1849 local inv = meta:get_inventory()
1850 inv:set_size("main", 8*4)
1851 print(dump(meta:to_table()))
1854 main = {[1] = "default:dirt", [2] = "", [3] = "", [4] = "",
1855 [5] = "", [6] = "", [7] = "", [8] = "", [9] = "",
1856 [10] = "", [11] = "", [12] = "", [13] = "",
1857 [14] = "default:cobble", [15] = "", [16] = "", [17] = "",
1858 [18] = "", [19] = "", [20] = "default:cobble", [21] = "",
1859 [22] = "", [23] = "", [24] = "", [25] = "", [26] = "",
1860 [27] = "", [28] = "", [29] = "", [30] = "", [31] = "",
1864 formspec = "size[8,9]list[context;main;0,0;8,4;]list[current_player;main;0,5;8,4;]",
1872 Item stacks can store metadata too. See [`ItemStackMetaRef`].
1874 Item metadata only contains a key-value store.
1876 Some of the values in the key-value store are handled specially:
1878 * `description`: Set the item stack's description. Defaults to
1880 * `color`: A `ColorString`, which sets the stack's color.
1881 * `palette_index`: If the item has a palette, this is used to get the
1882 current color from the palette.
1886 local meta = stack:get_meta()
1887 meta:set_string("key", "value")
1888 print(dump(meta:to_table()))
1896 Formspec defines a menu. This supports inventories and some of the
1897 typical widgets like buttons, checkboxes, text input fields, etc.
1898 It is a string, with a somewhat strange format.
1900 A formspec is made out of formspec elements, which includes widgets
1901 like buttons but also can be used to set stuff like background color.
1903 Many formspec elements have a `name`, which is a unique identifier which
1904 is used when the server receives user input. You must not use the name
1905 "quit" for formspec elements.
1907 Spaces and newlines can be inserted between the blocks, as is used in the
1910 Position and size units are inventory slots unless the new coordinate system
1911 is enabled. `X` and `Y` position the formspec element relative to the top left
1912 of the menu or container. `W` and `H` are its width and height values.
1914 If the new system is enabled, all elements have unified coordinates for all
1915 elements with no padding or spacing in between. This is highly recommended
1916 for new forms. See `real_coordinates[<bool>]` and `Migrating to Real
1919 Inventories with a `player:<name>` inventory location are only sent to the
1920 player named `<name>`.
1922 When displaying text which can contain formspec code, e.g. text set by a player,
1923 use `minetest.formspec_escape`.
1924 For coloured text you can use `minetest.colorize`.
1926 **WARNING**: do _not_ use a element name starting with `key_`; those names are
1927 reserved to pass key press events to formspec!
1929 **WARNING**: Minetest allows you to add elements to every single formspec instance
1930 using `player:set_formspec_prepend()`, which may be the reason backgrounds are
1931 appearing when you don't expect them to, or why things are styled differently
1932 to normal. See [`no_prepend[]`] and [Styling Formspecs].
1940 list[context;main;0,0;8,4;]
1941 list[current_player;main;0,5;8,4;]
1946 list[context;fuel;2,3;1,1;]
1947 list[context;src;2,1;1,1;]
1948 list[context;dst;5,1;2,2;]
1949 list[current_player;main;0,5;8,4;]
1951 ### Minecraft-like player inventory
1954 image[1,0.6;1,2;player.png]
1955 list[current_player;main;0,3.5;8,4;]
1956 list[current_player;craft;3,0;3,3;]
1957 list[current_player;craftpreview;7,1;1,1;]
1962 ### `formspec_version[<version>]`
1964 * Set the formspec version to a certain number. If not specified,
1965 version 1 is assumed.
1966 * Must be specified before `size` element.
1967 * Clients older than this version can neither show newer elements nor display
1968 elements with new arguments correctly.
1969 * Available since feature `formspec_version_element`.
1971 ### `size[<W>,<H>,<fixed_size>]`
1973 * Define the size of the menu in inventory slots
1974 * `fixed_size`: `true`/`false` (optional)
1975 * deprecated: `invsize[<W>,<H>;]`
1977 ### `position[<X>,<Y>]`
1979 * Must be used after `size` element.
1980 * Defines the position on the game window of the formspec's `anchor` point.
1981 * For X and Y, 0.0 and 1.0 represent opposite edges of the game window,
1983 * [0.0, 0.0] sets the position to the top left corner of the game window.
1984 * [1.0, 1.0] sets the position to the bottom right of the game window.
1985 * Defaults to the center of the game window [0.5, 0.5].
1987 ### `anchor[<X>,<Y>]`
1989 * Must be used after both `size` and `position` (if present) elements.
1990 * Defines the location of the anchor point within the formspec.
1991 * For X and Y, 0.0 and 1.0 represent opposite edges of the formspec,
1993 * [0.0, 1.0] sets the anchor to the bottom left corner of the formspec.
1994 * [1.0, 0.0] sets the anchor to the top right of the formspec.
1995 * Defaults to the center of the formspec [0.5, 0.5].
1997 * `position` and `anchor` elements need suitable values to avoid a formspec
1998 extending off the game window due to particular game window sizes.
2002 * Must be used after the `size`, `position`, and `anchor` elements (if present).
2003 * Disables player:set_formspec_prepend() from applying to this formspec.
2005 ### `real_coordinates[<bool>]`
2007 * INFORMATION: Enable it automatically using `formspec_version` version 2 or newer.
2008 * When set to true, all following formspec elements will use the new coordinate system.
2009 * If used immediately after `size`, `position`, `anchor`, and `no_prepend` elements
2010 (if present), the form size will use the new coordinate system.
2011 * **Note**: Formspec prepends are not affected by the coordinates in the main form.
2012 They must enable it explicitly.
2013 * For information on converting forms to the new coordinate system, see `Migrating
2014 to Real Coordinates`.
2016 ### `container[<X>,<Y>]`
2018 * Start of a container block, moves all physical elements in the container by
2020 * Must have matching `container_end`
2021 * Containers can be nested, in which case the offsets are added
2022 (child containers are relative to parent containers)
2024 ### `container_end[]`
2026 * End of a container, following elements are no longer relative to this
2029 ### `list[<inventory location>;<list name>;<X>,<Y>;<W>,<H>;]`
2031 * Show an inventory list if it has been sent to the client. Nothing will
2032 be shown if the inventory list is of size 0.
2033 * **Note**: With the new coordinate system, the spacing between inventory
2034 slots is one-fourth the size of an inventory slot.
2036 ### `list[<inventory location>;<list name>;<X>,<Y>;<W>,<H>;<starting item index>]`
2038 * Show an inventory list if it has been sent to the client. Nothing will
2039 be shown if the inventory list is of size 0.
2040 * **Note**: With the new coordinate system, the spacing between inventory
2041 slots is one-fourth the size of an inventory slot.
2043 ### `listring[<inventory location>;<list name>]`
2045 * Allows to create a ring of inventory lists
2046 * Shift-clicking on items in one element of the ring
2047 will send them to the next inventory list inside the ring
2048 * The first occurrence of an element inside the ring will
2049 determine the inventory where items will be sent to
2053 * Shorthand for doing `listring[<inventory location>;<list name>]`
2054 for the last two inventory lists added by list[...]
2056 ### `listcolors[<slot_bg_normal>;<slot_bg_hover>]`
2058 * Sets background color of slots as `ColorString`
2059 * Sets background color of slots on mouse hovering
2061 ### `listcolors[<slot_bg_normal>;<slot_bg_hover>;<slot_border>]`
2063 * Sets background color of slots as `ColorString`
2064 * Sets background color of slots on mouse hovering
2065 * Sets color of slots border
2067 ### `listcolors[<slot_bg_normal>;<slot_bg_hover>;<slot_border>;<tooltip_bgcolor>;<tooltip_fontcolor>]`
2069 * Sets background color of slots as `ColorString`
2070 * Sets background color of slots on mouse hovering
2071 * Sets color of slots border
2072 * Sets default background color of tooltips
2073 * Sets default font color of tooltips
2075 ### `tooltip[<gui_element_name>;<tooltip_text>;<bgcolor>;<fontcolor>]`
2077 * Adds tooltip for an element
2078 * `<bgcolor>` tooltip background color as `ColorString` (optional)
2079 * `<fontcolor>` tooltip font color as `ColorString` (optional)
2081 ### `tooltip[<X>,<Y>;<W>,<H>;<tooltip_text>;<bgcolor>;<fontcolor>]`
2083 * Adds tooltip for an area. Other tooltips will take priority when present.
2084 * `<bgcolor>` tooltip background color as `ColorString` (optional)
2085 * `<fontcolor>` tooltip font color as `ColorString` (optional)
2087 ### `image[<X>,<Y>;<W>,<H>;<texture name>]`
2091 ### `item_image[<X>,<Y>;<W>,<H>;<item name>]`
2093 * Show an inventory image of registered item/node
2095 ### `bgcolor[<color>;<fullscreen>]`
2097 * Sets background color of formspec as `ColorString`
2098 * If `true`, a fullscreen background is drawn and the color is ignored
2099 (does not affect the size of the formspec)
2101 ### `background[<X>,<Y>;<W>,<H>;<texture name>]`
2103 * Example for formspec 8x4 in 16x resolution: image shall be sized
2104 8 times 16px times 4 times 16px.
2106 ### `background[<X>,<Y>;<W>,<H>;<texture name>;<auto_clip>]`
2108 * Example for formspec 8x4 in 16x resolution:
2109 image shall be sized 8 times 16px times 4 times 16px
2110 * If `auto_clip` is `true`, the background is clipped to the formspec size
2111 (`x` and `y` are used as offset values, `w` and `h` are ignored)
2113 ### `background9[<X>,<Y>;<W>,<H>;<texture name>;<auto_clip>;<middle>]`
2115 * 9-sliced background. See https://en.wikipedia.org/wiki/9-slice_scaling
2116 * Middle is a rect which defines the middle of the 9-slice.
2117 * `x` - The middle will be x pixels from all sides.
2118 * `x,y` - The middle will be x pixels from the horizontal and y from the vertical.
2119 * `x,y,x2,y2` - The middle will start at x,y, and end at x2, y2. Negative x2 and y2 values
2120 will be added to the width and height of the texture, allowing it to be used as the
2121 distance from the far end.
2122 * All numbers in middle are integers.
2123 * Example for formspec 8x4 in 16x resolution:
2124 image shall be sized 8 times 16px times 4 times 16px
2125 * If `auto_clip` is `true`, the background is clipped to the formspec size
2126 (`x` and `y` are used as offset values, `w` and `h` are ignored)
2127 * Available since formspec version 2
2129 ### `pwdfield[<X>,<Y>;<W>,<H>;<name>;<label>]`
2131 * Textual password style field; will be sent to server when a button is clicked
2132 * When enter is pressed in field, fields.key_enter_field will be sent with the
2134 * With the old coordinate system, fields are a set height, but will be vertically
2135 centred on `H`. With the new coordinate system, `H` will modify the height.
2136 * `name` is the name of the field as returned in fields to `on_receive_fields`
2137 * `label`, if not blank, will be text printed on the top left above the field
2138 * See `field_close_on_enter` to stop enter closing the formspec
2140 ### `field[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]`
2142 * Textual field; will be sent to server when a button is clicked
2143 * When enter is pressed in field, `fields.key_enter_field` will be sent with
2144 the name of this field.
2145 * With the old coordinate system, fields are a set height, but will be vertically
2146 centred on `H`. With the new coordinate system, `H` will modify the height.
2147 * `name` is the name of the field as returned in fields to `on_receive_fields`
2148 * `label`, if not blank, will be text printed on the top left above the field
2149 * `default` is the default value of the field
2150 * `default` may contain variable references such as `${text}` which
2151 will fill the value from the metadata value `text`
2152 * **Note**: no extra text or more than a single variable is supported ATM.
2153 * See `field_close_on_enter` to stop enter closing the formspec
2155 ### `field[<name>;<label>;<default>]`
2157 * As above, but without position/size units
2158 * When enter is pressed in field, `fields.key_enter_field` will be sent with
2159 the name of this field.
2160 * Special field for creating simple forms, such as sign text input
2161 * Must be used without a `size[]` element
2162 * A "Proceed" button will be added automatically
2163 * See `field_close_on_enter` to stop enter closing the formspec
2165 ### `field_close_on_enter[<name>;<close_on_enter>]`
2167 * <name> is the name of the field
2168 * if <close_on_enter> is false, pressing enter in the field will submit the
2169 form but not close it.
2170 * defaults to true when not specified (ie: no tag for a field)
2172 ### `textarea[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]`
2174 * Same as fields above, but with multi-line input
2175 * If the text overflows, a vertical scrollbar is added.
2176 * If the name is empty, the textarea is read-only and
2177 the background is not shown, which corresponds to a multi-line label.
2179 ### `label[<X>,<Y>;<label>]`
2181 * The label formspec element displays the text set in `label`
2182 at the specified position.
2183 * **Note**: If the new coordinate system is enabled, labels are
2184 positioned from the center of the text, not the top.
2185 * The text is displayed directly without automatic line breaking,
2186 so label should not be used for big text chunks. Newlines can be
2187 used to make labels multiline.
2188 * **Note**: With the new coordinate system, newlines are spaced with
2189 half a coordinate. With the old system, newlines are spaced 2/5 of
2192 ### `vertlabel[<X>,<Y>;<label>]`
2194 * Textual label drawn vertically
2195 * `label` is the text on the label
2196 * **Note**: If the new coordinate system is enabled, vertlabels are
2197 positioned from the center of the text, not the left.
2199 ### `button[<X>,<Y>;<W>,<H>;<name>;<label>]`
2201 * Clickable button. When clicked, fields will be sent.
2202 * With the old coordinate system, buttons are a set height, but will be vertically
2203 centred on `H`. With the new coordinate system, `H` will modify the height.
2204 * `label` is the text on the button
2206 ### `image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>]`
2208 * `texture name` is the filename of an image
2209 * **Note**: Height is supported on both the old and new coordinate systems
2212 ### `image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>;<noclip>;<drawborder>;<pressed texture name>]`
2214 * `texture name` is the filename of an image
2215 * `noclip=true` means the image button doesn't need to be within specified
2217 * `drawborder`: draw button border or not
2218 * `pressed texture name` is the filename of an image on pressed state
2220 ### `item_image_button[<X>,<Y>;<W>,<H>;<item name>;<name>;<label>]`
2222 * `item name` is the registered name of an item/node
2223 * The item description will be used as the tooltip. This can be overridden with
2226 ### `button_exit[<X>,<Y>;<W>,<H>;<name>;<label>]`
2228 * When clicked, fields will be sent and the form will quit.
2229 * Same as `button` in all other respects.
2231 ### `image_button_exit[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>]`
2233 * When clicked, fields will be sent and the form will quit.
2234 * Same as `image_button` in all other respects.
2236 ### `textlist[<X>,<Y>;<W>,<H>;<name>;<listelem 1>,<listelem 2>,...,<listelem n>]`
2238 * Scrollable item list showing arbitrary text elements
2239 * `name` fieldname sent to server on doubleclick value is current selected
2241 * `listelements` can be prepended by #color in hexadecimal format RRGGBB
2243 * if you want a listelement to start with "#" write "##".
2245 ### `textlist[<X>,<Y>;<W>,<H>;<name>;<listelem 1>,<listelem 2>,...,<listelem n>;<selected idx>;<transparent>]`
2247 * Scrollable itemlist showing arbitrary text elements
2248 * `name` fieldname sent to server on doubleclick value is current selected
2250 * `listelements` can be prepended by #RRGGBB (only) in hexadecimal format
2251 * if you want a listelement to start with "#" write "##"
2252 * Index to be selected within textlist
2253 * `true`/`false`: draw transparent background
2254 * See also `minetest.explode_textlist_event`
2255 (main menu: `core.explode_textlist_event`).
2257 ### `tabheader[<X>,<Y>;<name>;<caption 1>,<caption 2>,...,<caption n>;<current_tab>;<transparent>;<draw_border>]`
2259 * Show a tab**header** at specific position (ignores formsize)
2260 * `X` and `Y`: position of the tabheader
2261 * *Note*: Width and height are automatically chosen with this syntax
2262 * `name` fieldname data is transferred to Lua
2263 * `caption 1`...: name shown on top of tab
2264 * `current_tab`: index of selected tab 1...
2265 * `transparent` (optional): show transparent
2266 * `draw_border` (optional): draw border
2268 ### `tabheader[<X>,<Y>;<H>;<name>;<caption 1>,<caption 2>,...,<caption n>;<current_tab>;<transparent>;<draw_border>]`
2270 * Show a tab**header** at specific position (ignores formsize)
2271 * **Important note**: This syntax for tabheaders can only be used with the
2272 new coordinate system.
2273 * `X` and `Y`: position of the tabheader
2274 * `H`: height of the tabheader. Width is automatically determined with this syntax.
2275 * `name` fieldname data is transferred to Lua
2276 * `caption 1`...: name shown on top of tab
2277 * `current_tab`: index of selected tab 1...
2278 * `transparent` (optional): show transparent
2279 * `draw_border` (optional): draw border
2281 ### `tabheader[<X>,<Y>;<W>,<H>;<name>;<caption 1>,<caption 2>,...,<caption n>;<current_tab>;<transparent>;<draw_border>]`
2283 * Show a tab**header** at specific position (ignores formsize)
2284 * **Important note**: This syntax for tabheaders can only be used with the
2285 new coordinate system.
2286 * `X` and `Y`: position of the tabheader
2287 * `W` and `H`: width and height of the tabheader
2288 * `name` fieldname data is transferred to Lua
2289 * `caption 1`...: name shown on top of tab
2290 * `current_tab`: index of selected tab 1...
2291 * `transparent` (optional): show transparent
2292 * `draw_border` (optional): draw border
2294 ### `box[<X>,<Y>;<W>,<H>;<color>]`
2296 * Simple colored box
2297 * `color` is color specified as a `ColorString`.
2298 If the alpha component is left blank, the box will be semitransparent.
2300 ### `dropdown[<X>,<Y>;<W>;<name>;<item 1>,<item 2>, ...,<item n>;<selected idx>]`
2302 * Show a dropdown field
2303 * **Important note**: There are two different operation modes:
2304 1. handle directly on change (only changed dropdown is submitted)
2305 2. read the value on pressing a button (all dropdown values are available)
2306 * `X` and `Y`: position of the dropdown
2307 * `W`: width of the dropdown. Height is automatically chosen with this syntax.
2308 * Fieldname data is transferred to Lua
2309 * Items to be shown in dropdown
2310 * Index of currently selected dropdown item
2312 ### `dropdown[<X>,<Y>;<W>,<H>;<name>;<item 1>,<item 2>, ...,<item n>;<selected idx>]`
2314 * Show a dropdown field
2315 * **Important note**: This syntax for dropdowns can only be used with the
2316 new coordinate system.
2317 * **Important note**: There are two different operation modes:
2318 1. handle directly on change (only changed dropdown is submitted)
2319 2. read the value on pressing a button (all dropdown values are available)
2320 * `X` and `Y`: position of the dropdown
2321 * `W` and `H`: width and height of the dropdown
2322 * Fieldname data is transferred to Lua
2323 * Items to be shown in dropdown
2324 * Index of currently selected dropdown item
2326 ### `checkbox[<X>,<Y>;<name>;<label>;<selected>]`
2329 * `name` fieldname data is transferred to Lua
2330 * `label` to be shown left of checkbox
2331 * `selected` (optional): `true`/`false`
2332 * **Note**: If the new coordinate system is enabled, checkboxes are
2333 positioned from the center of the checkbox, not the top.
2335 ### `scrollbar[<X>,<Y>;<W>,<H>;<orientation>;<name>;<value>]`
2338 * There are two ways to use it:
2339 1. handle the changed event (only changed scrollbar is available)
2340 2. read the value on pressing a button (all scrollbars are available)
2341 * `orientation`: `vertical`/`horizontal`
2342 * Fieldname data is transferred to Lua
2343 * Value this trackbar is set to (`0`-`1000`)
2344 * See also `minetest.explode_scrollbar_event`
2345 (main menu: `core.explode_scrollbar_event`).
2347 ### `table[<X>,<Y>;<W>,<H>;<name>;<cell 1>,<cell 2>,...,<cell n>;<selected idx>]`
2349 * Show scrollable table using options defined by the previous `tableoptions[]`
2350 * Displays cells as defined by the previous `tablecolumns[]`
2351 * `name`: fieldname sent to server on row select or doubleclick
2352 * `cell 1`...`cell n`: cell contents given in row-major order
2353 * `selected idx`: index of row to be selected within table (first row = `1`)
2354 * See also `minetest.explode_table_event`
2355 (main menu: `core.explode_table_event`).
2357 ### `tableoptions[<opt 1>;<opt 2>;...]`
2359 * Sets options for `table[]`
2361 * default text color (`ColorString`), defaults to `#FFFFFF`
2362 * `background=#RRGGBB`
2363 * table background color (`ColorString`), defaults to `#000000`
2364 * `border=<true/false>`
2365 * should the table be drawn with a border? (default: `true`)
2366 * `highlight=#RRGGBB`
2367 * highlight background color (`ColorString`), defaults to `#466432`
2368 * `highlight_text=#RRGGBB`
2369 * highlight text color (`ColorString`), defaults to `#FFFFFF`
2370 * `opendepth=<value>`
2371 * all subtrees up to `depth < value` are open (default value = `0`)
2372 * only useful when there is a column of type "tree"
2374 ### `tablecolumns[<type 1>,<opt 1a>,<opt 1b>,...;<type 2>,<opt 2a>,<opt 2b>;...]`
2376 * Sets columns for `table[]`
2377 * Types: `text`, `image`, `color`, `indent`, `tree`
2378 * `text`: show cell contents as text
2379 * `image`: cell contents are an image index, use column options to define
2381 * `color`: cell contents are a ColorString and define color of following
2383 * `indent`: cell contents are a number and define indentation of following
2385 * `tree`: same as indent, but user can open and close subtrees
2389 * for `text` and `image`: content alignment within cells.
2390 Available values: `left` (default), `center`, `right`, `inline`
2392 * for `text` and `image`: minimum width in em (default: `0`)
2393 * for `indent` and `tree`: indent width in em (default: `1.5`)
2394 * `padding=<value>`: padding left of the column, in em (default `0.5`).
2395 Exception: defaults to 0 for indent columns
2396 * `tooltip=<value>`: tooltip text (default: empty)
2397 * `image` column options:
2398 * `0=<value>` sets image for image index 0
2399 * `1=<value>` sets image for image index 1
2400 * `2=<value>` sets image for image index 2
2401 * and so on; defined indices need not be contiguous empty or
2402 non-numeric cells are treated as `0`.
2403 * `color` column options:
2404 * `span=<value>`: number of following columns to affect
2405 (default: infinite).
2407 ### `style[<name>;<prop1>;<prop2>;...]`
2409 * Set the style for the named element `name`.
2410 * Note: this **must** be before the element is defined.
2411 * See [Styling Formspecs].
2414 ### `style_type[<type>;<prop1>;<prop2>;...]`
2416 * Sets the style for all elements of type `type` which appear after this element.
2417 * See [Styling Formspecs].
2419 Migrating to Real Coordinates
2420 -----------------------------
2422 In the old system, positions included padding and spacing. Padding is a gap between
2423 the formspec window edges and content, and spacing is the gaps between items. For
2424 example, two `1x1` elements at `0,0` and `1,1` would have a spacing of `5/4` between them,
2425 and a padding of `3/8` from the formspec edge. It may be easiest to recreate old layouts
2426 in the new coordinate system from scratch.
2428 To recreate an old layout with padding, you'll need to pass the positions and sizes
2429 through the following formula to re-introduce padding:
2432 pos = (oldpos + 1)*spacing + padding
2438 You'll need to change the `size[]` tag like this:
2441 size = (oldsize-1)*spacing + padding*2 + 1
2444 A few elements had random offsets in the old system. Here is a table which shows these
2445 offsets when migrating:
2447 | Element | Position | Size | Notes
2448 |---------|------------|---------|-------
2449 | box | +0.3, +0.1 | 0, -0.4 |
2450 | button | | | Buttons now support height, so set h = 2 * 15/13 * 0.35, and reposition if h ~= 15/13 * 0.35 before
2451 | list | | | Spacing is now 0.25 for both directions, meaning lists will be taller in height
2452 | label | 0, +0.3 | | The first line of text is now positioned centered exactly at the position specified
2457 Formspec elements can be themed using the style elements:
2459 style[<name>;<prop1>;<prop2>;...]
2460 style_type[<type>;<prop1>;<prop2>;...]
2464 property_name=property_value
2468 style_type[button;bgcolor=#006699]
2469 style[world_delete;bgcolor=red;textcolor=yellow]
2470 button[4,3.95;2.6,1;world_delete;Delete]
2472 Setting a property to nothing will reset it to the default value. For example:
2474 style_type[button;bgimg=button.png;bgimg_pressed=button_pressed.png;border=false]
2475 style[btn_exit;bgimg=;bgimg_pressed=;border=;bgcolor=red]
2478 ### Supported Element Types
2480 Some types may inherit styles from parent types.
2483 * button_exit, inherits from button
2490 * pwdfield, inherits from field
2493 * vertlabel, inherits from field
2495 * item_image_button, inherits from image_button
2499 ### Valid Properties
2501 * button, button_exit
2502 * alpha - boolean, whether to draw alpha in bgimg. Default true.
2503 * bgcolor - color, sets button tint.
2504 * bgimg - standard image. Defaults to none.
2505 * bgimg_pressed - image when pressed. Defaults to bgimg when not provided.
2506 * border - boolean, draw border. Set to false to hide the bevelled button pane. Default true.
2507 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2508 * textcolor - color, default white.
2510 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2512 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2514 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2516 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2517 * field, pwdfield, textarea
2518 * border - set to false to hide the textbox background and border. Default true.
2519 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2520 * textcolor - color. Default white.
2522 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2524 * alpha - boolean, whether to draw alpha in bgimg. Default true.
2525 * border - boolean, draw border. Set to false to hide the bevelled button pane. Default false.
2526 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2528 * border - boolean, draw border. Set to false to hide the bevelled button pane. Default false.
2529 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2531 * noclip - boolean, set to true to allow the element to exceed formspec bounds.
2532 * textcolor - color. Default white.
2540 * `"context"`: Selected node metadata (deprecated: `"current_name"`)
2541 * `"current_player"`: Player to whom the menu is shown
2542 * `"player:<name>"`: Any player
2543 * `"nodemeta:<X>,<Y>,<Z>"`: Any node metadata
2544 * `"detached:<name>"`: A detached inventory
2546 Player Inventory lists
2547 ----------------------
2549 * `main`: list containing the default inventory
2550 * `craft`: list containing the craft input
2551 * `craftpreview`: list containing the craft prediction
2552 * `craftresult`: list containing the crafted output
2553 * `hand`: list containing an override for the empty hand
2554 * Is not created automatically, use `InvRef:set_size`
2555 * Is only used to enhance the empty hand's tool capabilities
2564 `#RGB` defines a color in hexadecimal format.
2566 `#RGBA` defines a color in hexadecimal format and alpha channel.
2568 `#RRGGBB` defines a color in hexadecimal format.
2570 `#RRGGBBAA` defines a color in hexadecimal format and alpha channel.
2572 Named colors are also supported and are equivalent to
2573 [CSS Color Module Level 4](http://dev.w3.org/csswg/css-color/#named-colors).
2574 To specify the value of the alpha channel, append `#AA` to the end of the color
2575 name (e.g. `colorname#08`). For named colors the hexadecimal string
2576 representing the alpha value must (always) be two hexadecimal digits.
2581 A ColorSpec specifies a 32-bit color. It can be written in any of the following
2584 * table form: Each element ranging from 0..255 (a, if absent, defaults to 255):
2585 * `colorspec = {a=255, r=0, g=255, b=0}`
2586 * numerical form: The raw integer value of an ARGB8 quad:
2587 * `colorspec = 0xFF00FF00`
2588 * string form: A ColorString (defined above):
2589 * `colorspec = "green"`
2597 Most text can contain escape sequences, that can for example color the text.
2598 There are a few exceptions: tab headers, dropdowns and vertical labels can't.
2599 The following functions provide escape sequences:
2601 * `minetest.get_color_escape_sequence(color)`:
2602 * `color` is a ColorString
2603 * The escape sequence sets the text color to `color`
2604 * `minetest.colorize(color, message)`:
2606 `minetest.get_color_escape_sequence(color) ..
2608 minetest.get_color_escape_sequence("#ffffff")`
2609 * `minetest.get_background_escape_sequence(color)`
2610 * `color` is a ColorString
2611 * The escape sequence sets the background of the whole text element to
2612 `color`. Only defined for item descriptions and tooltips.
2613 * `minetest.strip_foreground_colors(str)`
2614 * Removes foreground colors added by `get_color_escape_sequence`.
2615 * `minetest.strip_background_colors(str)`
2616 * Removes background colors added by `get_background_escape_sequence`.
2617 * `minetest.strip_colors(str)`
2618 * Removes all color escape sequences.
2625 A spatial vector is similar to a position, but instead using
2626 absolute world coordinates, it uses *relative* coordinates, relative to
2627 no particular point.
2629 Internally, it is implemented as a table with the 3 fields
2630 `x`, `y` and `z`. Example: `{x = 0, y = 1, z = 0}`.
2632 For the following functions, `v`, `v1`, `v2` are vectors,
2633 `p1`, `p2` are positions:
2635 * `vector.new(a[, b, c])`:
2637 * A copy of `a` if `a` is a vector.
2638 * `{x = a, y = b, z = c}`, if all of `a`, `b`, `c` are defined numbers.
2639 * `vector.direction(p1, p2)`:
2640 * Returns a vector of length 1 with direction `p1` to `p2`.
2641 * If `p1` and `p2` are identical, returns `{x = 0, y = 0, z = 0}`.
2642 * `vector.distance(p1, p2)`:
2643 * Returns zero or a positive number, the distance between `p1` and `p2`.
2644 * `vector.length(v)`:
2645 * Returns zero or a positive number, the length of vector `v`.
2646 * `vector.normalize(v)`:
2647 * Returns a vector of length 1 with direction of vector `v`.
2648 * If `v` has zero length, returns `{x = 0, y = 0, z = 0}`.
2649 * `vector.floor(v)`:
2650 * Returns a vector, each dimension rounded down.
2651 * `vector.round(v)`:
2652 * Returns a vector, each dimension rounded to nearest integer.
2653 * `vector.apply(v, func)`:
2654 * Returns a vector where the function `func` has been applied to each
2656 * `vector.equals(v1, v2)`:
2657 * Returns a boolean, `true` if the vectors are identical.
2658 * `vector.sort(v1, v2)`:
2659 * Returns in order minp, maxp vectors of the cuboid defined by `v1`, `v2`.
2660 * `vector.angle(v1, v2)`:
2661 * Returns the angle between `v1` and `v2` in radians.
2662 * `vector.dot(v1, v2)`
2663 * Returns the dot product of `v1` and `v2`
2664 * `vector.cross(v1, v2)`
2665 * Returns the cross product of `v1` and `v2`
2667 For the following functions `x` can be either a vector or a number:
2669 * `vector.add(v, x)`:
2671 * If `x` is a vector: Returns the sum of `v` and `x`.
2672 * If `x` is a number: Adds `x` to each component of `v`.
2673 * `vector.subtract(v, x)`:
2675 * If `x` is a vector: Returns the difference of `v` subtracted by `x`.
2676 * If `x` is a number: Subtracts `x` from each component of `v`.
2677 * `vector.multiply(v, x)`:
2678 * Returns a scaled vector or Schur product.
2679 * `vector.divide(v, x)`:
2680 * Returns a scaled vector or Schur quotient.
2688 * `dump2(obj, name, dumped)`: returns a string which makes `obj`
2689 human-readable, handles reference loops.
2690 * `obj`: arbitrary variable
2691 * `name`: string, default: `"_"`
2692 * `dumped`: table, default: `{}`
2693 * `dump(obj, dumped)`: returns a string which makes `obj` human-readable
2694 * `obj`: arbitrary variable
2695 * `dumped`: table, default: `{}`
2696 * `math.hypot(x, y)`
2697 * Get the hypotenuse of a triangle with legs x and y.
2698 Useful for distance calculation.
2699 * `math.sign(x, tolerance)`: returns `-1`, `0` or `1`
2700 * Get the sign of a number.
2701 * tolerance: number, default: `0.0`
2702 * If the absolute value of `x` is within the `tolerance` or `x` is NaN,
2704 * `math.factorial(x)`: returns the factorial of `x`
2705 * `string.split(str, separator, include_empty, max_splits, sep_is_pattern)`
2706 * `separator`: string, default: `","`
2707 * `include_empty`: boolean, default: `false`
2708 * `max_splits`: number, if it's negative, splits aren't limited,
2710 * `sep_is_pattern`: boolean, it specifies whether separator is a plain
2711 string or a pattern (regex), default: `false`
2712 * e.g. `"a,b":split","` returns `{"a","b"}`
2713 * `string:trim()`: returns the string without whitespace pre- and suffixes
2714 * e.g. `"\n \t\tfoo bar\t ":trim()` returns `"foo bar"`
2715 * `minetest.wrap_text(str, limit, as_table)`: returns a string or table
2716 * Adds newlines to the string to keep it within the specified character
2718 * Note that the returned lines may be longer than the limit since it only
2719 splits at word borders.
2720 * `limit`: number, maximal amount of characters in one line
2721 * `as_table`: boolean, if set to true, a table of lines instead of a string
2722 is returned, default: `false`
2723 * `minetest.pos_to_string(pos, decimal_places)`: returns string `"(X,Y,Z)"`
2724 * `pos`: table {x=X, y=Y, z=Z}
2725 * Converts the position `pos` to a human-readable, printable string
2726 * `decimal_places`: number, if specified, the x, y and z values of
2727 the position are rounded to the given decimal place.
2728 * `minetest.string_to_pos(string)`: returns a position or `nil`
2729 * Same but in reverse.
2730 * If the string can't be parsed to a position, nothing is returned.
2731 * `minetest.string_to_area("(X1, Y1, Z1) (X2, Y2, Z2)")`: returns two positions
2732 * Converts a string representing an area box into two positions
2733 * `minetest.formspec_escape(string)`: returns a string
2734 * escapes the characters "[", "]", "\", "," and ";", which can not be used
2736 * `minetest.is_yes(arg)`
2737 * returns true if passed 'y', 'yes', 'true' or a number that isn't zero.
2738 * `minetest.is_nan(arg)`
2739 * returns true when the passed number represents NaN.
2740 * `minetest.get_us_time()`
2741 * returns time with microsecond precision. May not return wall time.
2742 * `table.copy(table)`: returns a table
2743 * returns a deep copy of `table`
2744 * `table.indexof(list, val)`: returns the smallest numerical index containing
2745 the value `val` in the table `list`. Non-numerical indices are ignored.
2746 If `val` could not be found, `-1` is returned. `list` must not have
2748 * `table.insert_all(table, other_table)`:
2749 * Appends all values in `other_table` to `table` - uses `#table + 1` to
2751 * `minetest.pointed_thing_to_face_pos(placer, pointed_thing)`: returns a
2753 * returns the exact position on the surface of a pointed node
2754 * `minetest.get_dig_params(groups, tool_capabilities)`: Simulates a tool
2756 Returns a table with the following fields:
2757 * `diggable`: `true` if node can be dug, `false` otherwise.
2758 * `time`: Time it would take to dig the node.
2759 * `wear`: How much wear would be added to the tool.
2760 `time` and `wear` are meaningless if node's not diggable
2762 * `groups`: Table of the node groups of the node that would be dug
2763 * `tool_capabilities`: Tool capabilities table of the tool
2764 * `minetest.get_hit_params(groups, tool_capabilities [, time_from_last_punch])`:
2765 Simulates an item that punches an object.
2766 Returns a table with the following fields:
2767 * `hp`: How much damage the punch would cause.
2768 * `wear`: How much wear would be added to the tool.
2770 * `groups`: Damage groups of the object
2771 * `tool_capabilities`: Tool capabilities table of the item
2772 * `time_from_last_punch`: time in seconds since last punch action
2780 Texts can be translated client-side with the help of `minetest.translate` and
2783 Translating a string
2784 --------------------
2786 Two functions are provided to translate strings: `minetest.translate` and
2787 `minetest.get_translator`.
2789 * `minetest.get_translator(textdomain)` is a simple wrapper around
2790 `minetest.translate`, and `minetest.get_translator(textdomain)(str, ...)` is
2791 equivalent to `minetest.translate(textdomain, str, ...)`.
2792 It is intended to be used in the following way, so that it avoids verbose
2793 repetitions of `minetest.translate`:
2795 local S = minetest.get_translator(textdomain)
2798 As an extra commodity, if `textdomain` is nil, it is assumed to be "" instead.
2800 * `minetest.translate(textdomain, str, ...)` translates the string `str` with
2801 the given `textdomain` for disambiguation. The textdomain must match the
2802 textdomain specified in the translation file in order to get the string
2803 translated. This can be used so that a string is translated differently in
2805 It is advised to use the name of the mod as textdomain whenever possible, to
2806 avoid clashes with other mods.
2807 This function must be given a number of arguments equal to the number of
2808 arguments the translated string expects.
2809 Arguments are literal strings -- they will not be translated, so if you want
2810 them to be, they need to come as outputs of `minetest.translate` as well.
2812 For instance, suppose we want to translate "@1 Wool" with "@1" being replaced
2813 by the translation of "Red". We can do the following:
2815 local S = minetest.get_translator()
2816 S("@1 Wool", S("Red"))
2818 This will be displayed as "Red Wool" on old clients and on clients that do
2819 not have localization enabled. However, if we have for instance a translation
2820 file named `wool.fr.tr` containing the following:
2825 this will be displayed as "Laine Rouge" on clients with a French locale.
2827 Operations on translated strings
2828 --------------------------------
2830 The output of `minetest.translate` is a string, with escape sequences adding
2831 additional information to that string so that it can be translated on the
2832 different clients. In particular, you can't expect operations like string.length
2833 to work on them like you would expect them to, or string.gsub to work in the
2834 expected manner. However, string concatenation will still work as expected
2835 (note that you should only use this for things like formspecs; do not translate
2836 sentences by breaking them into parts; arguments should be used instead), and
2837 operations such as `minetest.colorize` which are also concatenation.
2839 Translation file format
2840 -----------------------
2842 A translation file has the suffix `.[lang].tr`, where `[lang]` is the language
2843 it corresponds to. It must be put into the `locale` subdirectory of the mod.
2844 The file should be a text file, with the following format:
2846 * Lines beginning with `# textdomain:` (the space is significant) can be used
2847 to specify the text domain of all following translations in the file.
2848 * All other empty lines or lines beginning with `#` are ignored.
2849 * Other lines should be in the format `original=translated`. Both `original`
2850 and `translated` can contain escape sequences beginning with `@` to insert
2851 arguments, literal `@`, `=` or newline (See [Escapes] below).
2852 There must be no extraneous whitespace around the `=` or at the beginning or
2853 the end of the line.
2858 Strings that need to be translated can contain several escapes, preceded by `@`.
2860 * `@@` acts as a literal `@`.
2861 * `@n`, where `n` is a digit between 1 and 9, is an argument for the translated
2862 string that will be inlined when translated. Due to how translations are
2863 implemented, the original translation string **must** have its arguments in
2864 increasing order, without gaps or repetitions, starting from 1.
2865 * `@=` acts as a literal `=`. It is not required in strings given to
2866 `minetest.translate`, but is in translation files to avoid being confused
2867 with the `=` separating the original from the translation.
2868 * `@\n` (where the `\n` is a literal newline) acts as a literal newline.
2869 As with `@=`, this escape is not required in strings given to
2870 `minetest.translate`, but is in translation files.
2871 * `@n` acts as a literal newline as well.
2879 Perlin noise creates a continuously-varying value depending on the input values.
2880 Usually in Minetest the input values are either 2D or 3D co-ordinates in nodes.
2881 The result is used during map generation to create the terrain shape, vary heat
2882 and humidity to distribute biomes, vary the density of decorations or vary the
2885 Structure of perlin noise
2886 -------------------------
2888 An 'octave' is a simple noise generator that outputs a value between -1 and 1.
2889 The smooth wavy noise it generates has a single characteristic scale, almost
2890 like a 'wavelength', so on its own does not create fine detail.
2891 Due to this perlin noise combines several octaves to create variation on
2892 multiple scales. Each additional octave has a smaller 'wavelength' than the
2895 This combination results in noise varying very roughly between -2.0 and 2.0 and
2896 with an average value of 0.0, so `scale` and `offset` are then used to multiply
2897 and offset the noise variation.
2899 The final perlin noise variation is created as follows:
2901 noise = offset + scale * (octave1 +
2902 octave2 * persistence +
2903 octave3 * persistence ^ 2 +
2904 octave4 * persistence ^ 3 +
2910 Noise Parameters are commonly called `NoiseParams`.
2914 After the multiplication by `scale` this is added to the result and is the final
2915 step in creating the noise value.
2916 Can be positive or negative.
2920 Once all octaves have been combined, the result is multiplied by this.
2921 Can be positive or negative.
2925 For octave1, this is roughly the change of input value needed for a very large
2926 variation in the noise value generated by octave1. It is almost like a
2927 'wavelength' for the wavy noise variation.
2928 Each additional octave has a 'wavelength' that is smaller than the previous
2929 octave, to create finer detail. `spread` will therefore roughly be the typical
2930 size of the largest structures in the final noise variation.
2932 `spread` is a vector with values for x, y, z to allow the noise variation to be
2933 stretched or compressed in the desired axes.
2934 Values are positive numbers.
2938 This is a whole number that determines the entire pattern of the noise
2939 variation. Altering it enables different noise patterns to be created.
2940 With other parameters equal, different seeds produce different noise patterns
2941 and identical seeds produce identical noise patterns.
2943 For this parameter you can randomly choose any whole number. Usually it is
2944 preferable for this to be different from other seeds, but sometimes it is useful
2945 to be able to create identical noise patterns.
2947 When used in mapgen this is actually a 'seed offset', it is added to the
2948 'world seed' to create the seed used by the noise, to ensure the noise has a
2949 different pattern in different worlds.
2953 The number of simple noise generators that are combined.
2954 A whole number, 1 or more.
2955 Each additional octave adds finer detail to the noise but also increases the
2956 noise calculation load.
2957 3 is a typical minimum for a high quality, complex and natural-looking noise
2958 variation. 1 octave has a slight 'gridlike' appearence.
2960 Choose the number of octaves according to the `spread` and `lacunarity`, and the
2961 size of the finest detail you require. For example:
2962 if `spread` is 512 nodes, `lacunarity` is 2.0 and finest detail required is 16
2963 nodes, octaves will be 6 because the 'wavelengths' of the octaves will be
2964 512, 256, 128, 64, 32, 16 nodes.
2965 Warning: If the 'wavelength' of any octave falls below 1 an error will occur.
2969 Each additional octave has an amplitude that is the amplitude of the previous
2970 octave multiplied by `persistence`, to reduce the amplitude of finer details,
2971 as is often helpful and natural to do so.
2972 Since this controls the balance of fine detail to large-scale detail
2973 `persistence` can be thought of as the 'roughness' of the noise.
2975 A positive or negative non-zero number, often between 0.3 and 1.0.
2976 A common medium value is 0.5, such that each octave has half the amplitude of
2977 the previous octave.
2978 This may need to be tuned when altering `lacunarity`; when doing so consider
2979 that a common medium value is 1 / lacunarity.
2983 Each additional octave has a 'wavelength' that is the 'wavelength' of the
2984 previous octave multiplied by 1 / lacunarity, to create finer detail.
2985 'lacunarity' is often 2.0 so 'wavelength' often halves per octave.
2987 A positive number no smaller than 1.0.
2988 Values below 2.0 create higher quality noise at the expense of requiring more
2989 octaves to cover a paticular range of 'wavelengths'.
2993 Leave this field unset for no special handling.
2994 Currently supported are `defaults`, `eased` and `absvalue`:
2998 Specify this if you would like to keep auto-selection of eased/not-eased while
2999 specifying some other flags.
3003 Maps noise gradient values onto a quintic S-curve before performing
3004 interpolation. This results in smooth, rolling noise.
3005 Disable this (`noeased`) for sharp-looking noise with a slightly gridded
3007 If no flags are specified (or defaults is), 2D noise is eased and 3D noise is
3009 Easing a 3D noise significantly increases the noise calculation load, so use
3014 The absolute value of each octave's noise variation is used when combining the
3015 octaves. The final perlin noise variation is created as follows:
3017 noise = offset + scale * (abs(octave1) +
3018 abs(octave2) * persistence +
3019 abs(octave3) * persistence ^ 2 +
3020 abs(octave4) * persistence ^ 3 +
3025 For 2D or 3D perlin noise or perlin noise maps:
3030 spread = {x = 500, y = 500, z = 500},
3035 flags = "defaults, absvalue",
3038 For 2D noise the Z component of `spread` is still defined but is ignored.
3039 A single noise parameter table can be used for 2D or 3D noise.
3050 These tell in what manner the ore is generated.
3052 All default ores are of the uniformly-distributed scatter type.
3056 Randomly chooses a location and generates a cluster of ore.
3058 If `noise_params` is specified, the ore will be placed if the 3D perlin noise
3059 at that point is greater than the `noise_threshold`, giving the ability to
3060 create a non-equal distribution of ore.
3064 Creates a sheet of ore in a blob shape according to the 2D perlin noise
3065 described by `noise_params` and `noise_threshold`. This is essentially an
3066 improved version of the so-called "stratus" ore seen in some unofficial mods.
3068 This sheet consists of vertical columns of uniform randomly distributed height,
3069 varying between the inclusive range `column_height_min` and `column_height_max`.
3070 If `column_height_min` is not specified, this parameter defaults to 1.
3071 If `column_height_max` is not specified, this parameter defaults to `clust_size`
3072 for reverse compatibility. New code should prefer `column_height_max`.
3074 The `column_midpoint_factor` parameter controls the position of the column at
3075 which ore emanates from.
3076 If 1, columns grow upward. If 0, columns grow downward. If 0.5, columns grow
3077 equally starting from each direction.
3078 `column_midpoint_factor` is a decimal number ranging in value from 0 to 1. If
3079 this parameter is not specified, the default is 0.5.
3081 The ore parameters `clust_scarcity` and `clust_num_ores` are ignored for this
3086 Creates a sheet of ore in a cloud-like puff shape.
3088 As with the `sheet` ore type, the size and shape of puffs are described by
3089 `noise_params` and `noise_threshold` and are placed at random vertical
3090 positions within the currently generated chunk.
3092 The vertical top and bottom displacement of each puff are determined by the
3093 noise parameters `np_puff_top` and `np_puff_bottom`, respectively.
3097 Creates a deformed sphere of ore according to 3d perlin noise described by
3098 `noise_params`. The maximum size of the blob is `clust_size`, and
3099 `clust_scarcity` has the same meaning as with the `scatter` type.
3103 Creates veins of ore varying in density by according to the intersection of two
3104 instances of 3d perlin noise with different seeds, both described by
3107 `random_factor` varies the influence random chance has on placement of an ore
3108 inside the vein, which is `1` by default. Note that modifying this parameter
3109 may require adjusting `noise_threshold`.
3111 The parameters `clust_scarcity`, `clust_num_ores`, and `clust_size` are ignored
3114 This ore type is difficult to control since it is sensitive to small changes.
3115 The following is a decent set of parameters to work from:
3120 spread = {x=200, y=200, z=200},
3127 noise_threshold = 1.6
3129 **WARNING**: Use this ore type *very* sparingly since it is ~200x more
3130 computationally expensive than any other ore.
3134 Creates a single undulating ore stratum that is continuous across mapchunk
3135 borders and horizontally spans the world.
3137 The 2D perlin noise described by `noise_params` defines the Y co-ordinate of
3138 the stratum midpoint. The 2D perlin noise described by `np_stratum_thickness`
3139 defines the stratum's vertical thickness (in units of nodes). Due to being
3140 continuous across mapchunk borders the stratum's vertical thickness is
3143 If the noise parameter `noise_params` is omitted the ore will occur from y_min
3144 to y_max in a simple horizontal stratum.
3146 A parameter `stratum_thickness` can be provided instead of the noise parameter
3147 `np_stratum_thickness`, to create a constant thickness.
3149 Leaving out one or both noise parameters makes the ore generation less
3150 intensive, useful when adding multiple strata.
3152 `y_min` and `y_max` define the limits of the ore generation and for performance
3153 reasons should be set as close together as possible but without clipping the
3154 stratum's Y variation.
3156 Each node in the stratum has a 1-in-`clust_scarcity` chance of being ore, so a
3157 solid-ore stratum would require a `clust_scarcity` of 1.
3159 The parameters `clust_num_ores`, `clust_size`, `noise_threshold` and
3160 `random_factor` are ignored by this ore type.
3165 See section [Flag Specifier Format].
3167 Currently supported flags:
3168 `puff_cliffs`, `puff_additive_composition`.
3172 If set, puff ore generation will not taper down large differences in
3173 displacement when approaching the edge of a puff. This flag has no effect for
3174 ore types other than `puff`.
3176 ### `puff_additive_composition`
3178 By default, when noise described by `np_puff_top` or `np_puff_bottom` results
3179 in a negative displacement, the sub-column at that point is not generated. With
3180 this attribute set, puff ore generation will instead generate the absolute
3181 difference in noise displacement values. This flag has no effect for ore types
3190 The varying types of decorations that can be placed.
3195 Creates a 1 times `H` times 1 column of a specified node (or a random node from
3196 a list, if a decoration list is specified). Can specify a certain node it must
3197 spawn next to, such as water or lava, for example. Can also generate a
3198 decoration of random height between a specified lower and upper bound.
3199 This type of decoration is intended for placement of grass, flowers, cacti,
3200 papyri, waterlilies and so on.
3205 Copies a box of `MapNodes` from a specified schematic file (or raw description).
3206 Can specify a probability of a node randomly appearing when placed.
3207 This decoration type is intended to be used for multi-node sized discrete
3208 structures, such as trees, cave spikes, rocks, and so on.
3217 --------------------
3219 A schematic specifier identifies a schematic by either a filename to a
3220 Minetest Schematic file (`.mts`) or through raw data supplied through Lua,
3221 in the form of a table. This table specifies the following fields:
3223 * The `size` field is a 3D vector containing the dimensions of the provided
3224 schematic. (required field)
3225 * The `yslice_prob` field is a table of {ypos, prob} slice tables. A slice table
3226 sets the probability of a particular horizontal slice of the schematic being
3227 placed. (optional field)
3228 `ypos` = 0 for the lowest horizontal slice of a schematic.
3229 The default of `prob` is 255.
3230 * The `data` field is a flat table of MapNode tables making up the schematic,
3231 in the order of `[z [y [x]]]`. (required field)
3232 Each MapNode table contains:
3233 * `name`: the name of the map node to place (required)
3234 * `prob` (alias `param1`): the probability of this node being placed
3236 * `param2`: the raw param2 value of the node being placed onto the map
3238 * `force_place`: boolean representing if the node should forcibly overwrite
3239 any previous contents (default: false)
3241 About probability values:
3243 * A probability value of `0` or `1` means that node will never appear
3245 * A probability value of `254` or `255` means the node will always appear
3247 * If the probability value `p` is greater than `1`, then there is a
3248 `(p / 256 * 100)` percent chance that node will appear when the schematic is
3251 Schematic attributes
3252 --------------------
3254 See section [Flag Specifier Format].
3256 Currently supported flags: `place_center_x`, `place_center_y`, `place_center_z`,
3259 * `place_center_x`: Placement of this decoration is centered along the X axis.
3260 * `place_center_y`: Placement of this decoration is centered along the Y axis.
3261 * `place_center_z`: Placement of this decoration is centered along the Z axis.
3262 * `force_placement`: Schematic nodes other than "ignore" will replace existing
3268 Lua Voxel Manipulator
3269 =====================
3274 VoxelManip is a scripting interface to the internal 'Map Voxel Manipulator'
3275 facility. The purpose of this object is for fast, low-level, bulk access to
3276 reading and writing Map content. As such, setting map nodes through VoxelManip
3277 will lack many of the higher level features and concepts you may be used to
3278 with other methods of setting nodes. For example, nodes will not have their
3279 construction and destruction callbacks run, and no rollback information is
3282 It is important to note that VoxelManip is designed for speed, and *not* ease
3283 of use or flexibility. If your mod requires a map manipulation facility that
3284 will handle 100% of all edge cases, or the use of high level node placement
3285 features, perhaps `minetest.set_node()` is better suited for the job.
3287 In addition, VoxelManip might not be faster, or could even be slower, for your
3288 specific use case. VoxelManip is most effective when setting large areas of map
3289 at once - for example, if only setting a 3x3x3 node area, a
3290 `minetest.set_node()` loop may be more optimal. Always profile code using both
3291 methods of map manipulation to determine which is most appropriate for your
3294 A recent simple test of setting cubic areas showed that `minetest.set_node()`
3295 is faster than a VoxelManip for a 3x3x3 node cube or smaller.
3300 A VoxelManip object can be created any time using either:
3301 `VoxelManip([p1, p2])`, or `minetest.get_voxel_manip([p1, p2])`.
3303 If the optional position parameters are present for either of these routines,
3304 the specified region will be pre-loaded into the VoxelManip object on creation.
3305 Otherwise, the area of map you wish to manipulate must first be loaded into the
3306 VoxelManip object using `VoxelManip:read_from_map()`.
3308 Note that `VoxelManip:read_from_map()` returns two position vectors. The region
3309 formed by these positions indicate the minimum and maximum (respectively)
3310 positions of the area actually loaded in the VoxelManip, which may be larger
3311 than the area requested. For convenience, the loaded area coordinates can also
3312 be queried any time after loading map data with `VoxelManip:get_emerged_area()`.
3314 Now that the VoxelManip object is populated with map data, your mod can fetch a
3315 copy of this data using either of two methods. `VoxelManip:get_node_at()`,
3316 which retrieves an individual node in a MapNode formatted table at the position
3317 requested is the simplest method to use, but also the slowest.
3319 Nodes in a VoxelManip object may also be read in bulk to a flat array table
3322 * `VoxelManip:get_data()` for node content (in Content ID form, see section
3324 * `VoxelManip:get_light_data()` for node light levels, and
3325 * `VoxelManip:get_param2_data()` for the node type-dependent "param2" values.
3327 See section [Flat array format] for more details.
3329 It is very important to understand that the tables returned by any of the above
3330 three functions represent a snapshot of the VoxelManip's internal state at the
3331 time of the call. This copy of the data will not magically update itself if
3332 another function modifies the internal VoxelManip state.
3333 Any functions that modify a VoxelManip's contents work on the VoxelManip's
3334 internal state unless otherwise explicitly stated.
3336 Once the bulk data has been edited to your liking, the internal VoxelManip
3337 state can be set using:
3339 * `VoxelManip:set_data()` for node content (in Content ID form, see section
3341 * `VoxelManip:set_light_data()` for node light levels, and
3342 * `VoxelManip:set_param2_data()` for the node type-dependent `param2` values.
3344 The parameter to each of the above three functions can use any table at all in
3345 the same flat array format as produced by `get_data()` etc. and is not required
3346 to be a table retrieved from `get_data()`.
3348 Once the internal VoxelManip state has been modified to your liking, the
3349 changes can be committed back to the map by calling `VoxelManip:write_to_map()`
3351 ### Flat array format
3354 `Nx = p2.X - p1.X + 1`,
3355 `Ny = p2.Y - p1.Y + 1`, and
3356 `Nz = p2.Z - p1.Z + 1`.
3358 Then, for a loaded region of p1..p2, this array ranges from `1` up to and
3359 including the value of the expression `Nx * Ny * Nz`.
3361 Positions offset from p1 are present in the array with the format of:
3364 (0, 0, 0), (1, 0, 0), (2, 0, 0), ... (Nx, 0, 0),
3365 (0, 1, 0), (1, 1, 0), (2, 1, 0), ... (Nx, 1, 0),
3367 (0, Ny, 0), (1, Ny, 0), (2, Ny, 0), ... (Nx, Ny, 0),
3368 (0, 0, 1), (1, 0, 1), (2, 0, 1), ... (Nx, 0, 1),
3370 (0, Ny, 2), (1, Ny, 2), (2, Ny, 2), ... (Nx, Ny, 2),
3372 (0, Ny, Nz), (1, Ny, Nz), (2, Ny, Nz), ... (Nx, Ny, Nz)
3375 and the array index for a position p contained completely in p1..p2 is:
3377 `(p.Z - p1.Z) * Ny * Nx + (p.Y - p1.Y) * Nx + (p.X - p1.X) + 1`
3379 Note that this is the same "flat 3D array" format as
3380 `PerlinNoiseMap:get3dMap_flat()`.
3381 VoxelArea objects (see section [`VoxelArea`]) can be used to simplify calculation
3382 of the index for a single point in a flat VoxelManip array.
3386 A Content ID is a unique integer identifier for a specific node type.
3387 These IDs are used by VoxelManip in place of the node name string for
3388 `VoxelManip:get_data()` and `VoxelManip:set_data()`. You can use
3389 `minetest.get_content_id()` to look up the Content ID for the specified node
3390 name, and `minetest.get_name_from_content_id()` to look up the node name string
3391 for a given Content ID.
3392 After registration of a node, its Content ID will remain the same throughout
3393 execution of the mod.
3394 Note that the node being queried needs to have already been been registered.
3396 The following builtin node types have their Content IDs defined as constants:
3398 * `minetest.CONTENT_UNKNOWN`: ID for "unknown" nodes
3399 * `minetest.CONTENT_AIR`: ID for "air" nodes
3400 * `minetest.CONTENT_IGNORE`: ID for "ignore" nodes
3402 ### Mapgen VoxelManip objects
3404 Inside of `on_generated()` callbacks, it is possible to retrieve the same
3405 VoxelManip object used by the core's Map Generator (commonly abbreviated
3406 Mapgen). Most of the rules previously described still apply but with a few
3409 * The Mapgen VoxelManip object is retrieved using:
3410 `minetest.get_mapgen_object("voxelmanip")`
3411 * This VoxelManip object already has the region of map just generated loaded
3412 into it; it's not necessary to call `VoxelManip:read_from_map()` before using
3413 a Mapgen VoxelManip.
3414 * The `on_generated()` callbacks of some mods may place individual nodes in the
3415 generated area using non-VoxelManip map modification methods. Because the
3416 same Mapgen VoxelManip object is passed through each `on_generated()`
3417 callback, it becomes necessary for the Mapgen VoxelManip object to maintain
3418 consistency with the current map state. For this reason, calling any of the
3419 following functions:
3420 `minetest.add_node()`, `minetest.set_node()`, or `minetest.swap_node()`
3421 will also update the Mapgen VoxelManip object's internal state active on the
3423 * After modifying the Mapgen VoxelManip object's internal buffer, it may be
3424 necessary to update lighting information using either:
3425 `VoxelManip:calc_lighting()` or `VoxelManip:set_lighting()`.
3427 ### Other API functions operating on a VoxelManip
3429 If any VoxelManip contents were set to a liquid node,
3430 `VoxelManip:update_liquids()` must be called for these liquid nodes to begin
3431 flowing. It is recommended to call this function only after having written all
3432 buffered data back to the VoxelManip object, save for special situations where
3433 the modder desires to only have certain liquid nodes begin flowing.
3435 The functions `minetest.generate_ores()` and `minetest.generate_decorations()`
3436 will generate all registered decorations and ores throughout the full area
3437 inside of the specified VoxelManip object.
3439 `minetest.place_schematic_on_vmanip()` is otherwise identical to
3440 `minetest.place_schematic()`, except instead of placing the specified schematic
3441 directly on the map at the specified position, it will place the schematic
3442 inside the VoxelManip.
3446 * Attempting to read data from a VoxelManip object before map is read will
3447 result in a zero-length array table for `VoxelManip:get_data()`, and an
3448 "ignore" node at any position for `VoxelManip:get_node_at()`.
3449 * If either a region of map has not yet been generated or is out-of-bounds of
3450 the map, that region is filled with "ignore" nodes.
3451 * Other mods, or the core itself, could possibly modify the area of map
3452 currently loaded into a VoxelManip object. With the exception of Mapgen
3453 VoxelManips (see above section), the internal buffers are not updated. For
3454 this reason, it is strongly encouraged to complete the usage of a particular
3455 VoxelManip object in the same callback it had been created.
3456 * If a VoxelManip object will be used often, such as in an `on_generated()`
3457 callback, consider passing a file-scoped table as the optional parameter to
3458 `VoxelManip:get_data()`, which serves as a static buffer the function can use
3459 to write map data to instead of returning a new table each call. This greatly
3460 enhances performance by avoiding unnecessary memory allocations.
3465 * `read_from_map(p1, p2)`: Loads a chunk of map into the VoxelManip object
3466 containing the region formed by `p1` and `p2`.
3467 * returns actual emerged `pmin`, actual emerged `pmax`
3468 * `write_to_map([light])`: Writes the data loaded from the `VoxelManip` back to
3470 * **important**: data must be set using `VoxelManip:set_data()` before
3472 * if `light` is true, then lighting is automatically recalculated.
3473 The default value is true.
3474 If `light` is false, no light calculations happen, and you should correct
3475 all modified blocks with `minetest.fix_light()` as soon as possible.
3476 Keep in mind that modifying the map where light is incorrect can cause
3478 * `get_node_at(pos)`: Returns a `MapNode` table of the node currently loaded in
3479 the `VoxelManip` at that position
3480 * `set_node_at(pos, node)`: Sets a specific `MapNode` in the `VoxelManip` at
3482 * `get_data([buffer])`: Retrieves the node content data loaded into the
3483 `VoxelManip` object.
3484 * returns raw node data in the form of an array of node content IDs
3485 * if the param `buffer` is present, this table will be used to store the
3487 * `set_data(data)`: Sets the data contents of the `VoxelManip` object
3488 * `update_map()`: Does nothing, kept for compatibility.
3489 * `set_lighting(light, [p1, p2])`: Set the lighting within the `VoxelManip` to
3491 * `light` is a table, `{day=<0...15>, night=<0...15>}`
3492 * To be used only by a `VoxelManip` object from
3493 `minetest.get_mapgen_object`.
3494 * (`p1`, `p2`) is the area in which lighting is set, defaults to the whole
3496 * `get_light_data()`: Gets the light data read into the `VoxelManip` object
3497 * Returns an array (indices 1 to volume) of integers ranging from `0` to
3499 * Each value is the bitwise combination of day and night light values
3501 * `light = day + (night * 16)`
3502 * `set_light_data(light_data)`: Sets the `param1` (light) contents of each node
3503 in the `VoxelManip`.
3504 * expects lighting data in the same format that `get_light_data()` returns
3505 * `get_param2_data([buffer])`: Gets the raw `param2` data read into the
3506 `VoxelManip` object.
3507 * Returns an array (indices 1 to volume) of integers ranging from `0` to
3509 * If the param `buffer` is present, this table will be used to store the
3511 * `set_param2_data(param2_data)`: Sets the `param2` contents of each node in
3513 * `calc_lighting([p1, p2], [propagate_shadow])`: Calculate lighting within the
3515 * To be used only by a `VoxelManip` object from
3516 `minetest.get_mapgen_object`.
3517 * (`p1`, `p2`) is the area in which lighting is set, defaults to the whole
3518 area if left out or nil. For almost all uses these should be left out
3519 or nil to use the default.
3520 * `propagate_shadow` is an optional boolean deciding whether shadows in a
3521 generated mapchunk above are propagated down into the mapchunk, defaults
3522 to `true` if left out.
3523 * `update_liquids()`: Update liquid flow
3524 * `was_modified()`: Returns `true` or `false` if the data in the voxel
3525 manipulator had been modified since the last read from map, due to a call to
3526 `minetest.set_data()` on the loaded area elsewhere.
3527 * `get_emerged_area()`: Returns actual emerged minimum and maximum positions.
3532 A helper class for voxel areas.
3533 It can be created via `VoxelArea:new{MinEdge=pmin, MaxEdge=pmax}`.
3534 The coordinates are *inclusive*, like most other things in Minetest.
3538 * `getExtent()`: returns a 3D vector containing the size of the area formed by
3539 `MinEdge` and `MaxEdge`.
3540 * `getVolume()`: returns the volume of the area formed by `MinEdge` and
3542 * `index(x, y, z)`: returns the index of an absolute position in a flat array
3544 * `x`, `y` and `z` must be integers to avoid an incorrect index result.
3545 * The position (x, y, z) is not checked for being inside the area volume,
3546 being outside can cause an incorrect index result.
3547 * Useful for things like `VoxelManip`, raw Schematic specifiers,
3548 `PerlinNoiseMap:get2d`/`3dMap`, and so on.
3549 * `indexp(p)`: same functionality as `index(x, y, z)` but takes a vector.
3550 * As with `index(x, y, z)`, the components of `p` must be integers, and `p`
3551 is not checked for being inside the area volume.
3552 * `position(i)`: returns the absolute position vector corresponding to index
3554 * `contains(x, y, z)`: check if (`x`,`y`,`z`) is inside area formed by
3555 `MinEdge` and `MaxEdge`.
3556 * `containsp(p)`: same as above, except takes a vector
3557 * `containsi(i)`: same as above, except takes an index `i`
3558 * `iter(minx, miny, minz, maxx, maxy, maxz)`: returns an iterator that returns
3560 * from (`minx`,`miny`,`minz`) to (`maxx`,`maxy`,`maxz`) in the order of
3562 * `iterp(minp, maxp)`: same as above, except takes a vector
3570 A mapgen object is a construct used in map generation. Mapgen objects can be
3571 used by an `on_generate` callback to speed up operations by avoiding
3572 unnecessary recalculations, these can be retrieved using the
3573 `minetest.get_mapgen_object()` function. If the requested Mapgen object is
3574 unavailable, or `get_mapgen_object()` was called outside of an `on_generate()`
3575 callback, `nil` is returned.
3577 The following Mapgen objects are currently available:
3581 This returns three values; the `VoxelManip` object to be used, minimum and
3582 maximum emerged position, in that order. All mapgens support this object.
3586 Returns an array containing the y coordinates of the ground levels of nodes in
3587 the most recently generated chunk by the current mapgen.
3591 Returns an array containing the biome IDs of nodes in the most recently
3592 generated chunk by the current mapgen.
3596 Returns an array containing the temperature values of nodes in the most
3597 recently generated chunk by the current mapgen.
3601 Returns an array containing the humidity values of nodes in the most recently
3602 generated chunk by the current mapgen.
3606 Returns a table mapping requested generation notification types to arrays of
3607 positions at which the corresponding generated structures are located within
3608 the current chunk. To set the capture of positions of interest to be recorded
3609 on generate, use `minetest.set_gen_notify()`.
3610 For decorations, the returned positions are the ground surface 'place_on'
3611 nodes, not the decorations themselves. A 'simple' type decoration is often 1
3612 node above the returned position and possibly displaced by 'place_offset_y'.
3614 Possible fields of the table returned are:
3620 * `large_cave_begin`
3624 Decorations have a key in the format of `"decoration#id"`, where `id` is the
3625 numeric unique decoration ID as returned by `minetest.get_decoration_id`.
3633 Functions receive a "luaentity" as `self`:
3635 * It has the member `.name`, which is the registered name `("mod:thing")`
3636 * It has the member `.object`, which is an `ObjectRef` pointing to the object
3637 * The original prototype stuff is visible directly via a metatable
3641 * `on_activate(self, staticdata, dtime_s)`
3642 * Called when the object is instantiated.
3643 * `dtime_s` is the time passed since the object was unloaded, which can be
3644 used for updating the entity state.
3645 * `on_step(self, dtime)`
3646 * Called on every server tick, after movement and collision processing.
3647 `dtime` is usually 0.1 seconds, as per the `dedicated_server_step` setting
3649 * `on_punch(self, puncher, time_from_last_punch, tool_capabilities, dir, damage)`
3650 * Called when somebody punches the object.
3651 * Note that you probably want to handle most punches using the automatic
3653 * `puncher`: an `ObjectRef` (can be `nil`)
3654 * `time_from_last_punch`: Meant for disallowing spamming of clicks
3656 * `tool_capabilities`: capability table of used tool (can be `nil`)
3657 * `dir`: unit vector of direction of punch. Always defined. Points from the
3658 puncher to the punched.
3659 * `damage`: damage that will be done to entity.
3660 * `on_death(self, killer)`
3661 * Called when the object dies.
3662 * `killer`: an `ObjectRef` (can be `nil`)
3663 * `on_rightclick(self, clicker)`
3664 * `on_attach_child(self, child)`
3665 * `child`: an `ObjectRef` of the child that attaches
3666 * `on_detach_child(self, child)`
3667 * `child`: an `ObjectRef` of the child that detaches
3668 * `on_detach(self, parent)`
3669 * `parent`: an `ObjectRef` (can be `nil`) from where it got detached
3670 * This happens before the parent object is removed from the world
3671 * `get_staticdata(self)`
3672 * Should return a string that will be passed to `on_activate` when the
3673 object is instantiated the next time.
3685 axiom, --string initial tree axiom
3686 rules_a, --string rules set A
3687 rules_b, --string rules set B
3688 rules_c, --string rules set C
3689 rules_d, --string rules set D
3690 trunk, --string trunk node name
3691 leaves, --string leaves node name
3692 leaves2, --string secondary leaves node name
3693 leaves2_chance,--num chance (0-100) to replace leaves with leaves2
3694 angle, --num angle in deg
3695 iterations, --num max # of iterations, usually 2 -5
3696 random_level, --num factor to lower nr of iterations, usually 0 - 3
3697 trunk_type, --string single/double/crossed) type of trunk: 1 node,
3698 -- 2x2 nodes or 3x3 in cross shape
3699 thin_branches, --boolean true -> use thin (1 node) branches
3700 fruit, --string fruit node name
3701 fruit_chance, --num chance (0-100) to replace leaves with fruit node
3702 seed, --num random seed, if no seed is provided, the engine
3706 Key for special L-System symbols used in axioms
3707 -----------------------------------------------
3709 * `G`: move forward one unit with the pen up
3710 * `F`: move forward one unit with the pen down drawing trunks and branches
3711 * `f`: move forward one unit with the pen down drawing leaves (100% chance)
3712 * `T`: move forward one unit with the pen down drawing trunks only
3713 * `R`: move forward one unit with the pen down placing fruit
3714 * `A`: replace with rules set A
3715 * `B`: replace with rules set B
3716 * `C`: replace with rules set C
3717 * `D`: replace with rules set D
3718 * `a`: replace with rules set A, chance 90%
3719 * `b`: replace with rules set B, chance 80%
3720 * `c`: replace with rules set C, chance 70%
3721 * `d`: replace with rules set D, chance 60%
3722 * `+`: yaw the turtle right by `angle` parameter
3723 * `-`: yaw the turtle left by `angle` parameter
3724 * `&`: pitch the turtle down by `angle` parameter
3725 * `^`: pitch the turtle up by `angle` parameter
3726 * `/`: roll the turtle to the right by `angle` parameter
3727 * `*`: roll the turtle to the left by `angle` parameter
3728 * `[`: save in stack current state info
3729 * `]`: recover from stack state info
3734 Spawn a small apple tree:
3736 pos = {x=230,y=20,z=4}
3739 rules_a="[&&&FFFFF&&FFFF][&&&++++FFFFF&&FFFF][&&&----FFFFF&&FFFF]",
3740 rules_b="[&&&++FFFFF&&FFFF][&&&--FFFFF&&FFFF][&&&------FFFFF&&FFFF]",
3741 trunk="default:tree",
3742 leaves="default:leaves",
3746 trunk_type="single",
3749 fruit="default:apple"
3751 minetest.spawn_tree(pos,apple_tree)
3756 'minetest' namespace reference
3757 ==============================
3762 * `minetest.get_current_modname()`: returns the currently loading mod's name,
3764 * `minetest.get_modpath(modname)`: returns e.g.
3765 `"/home/user/.minetest/usermods/modname"`.
3766 * Useful for loading additional `.lua` modules or static data from mod
3767 * `minetest.get_modnames()`: returns a list of installed mods
3768 * Return a list of installed mods, sorted alphabetically
3769 * `minetest.get_worldpath()`: returns e.g. `"/home/user/.minetest/world"`
3770 * Useful for storing custom data
3771 * `minetest.is_singleplayer()`
3772 * `minetest.features`: Table containing API feature flags
3775 glasslike_framed = true, -- 0.4.7
3776 nodebox_as_selectionbox = true, -- 0.4.7
3777 get_all_craft_recipes_works = true, -- 0.4.7
3778 -- The transparency channel of textures can optionally be used on
3780 use_texture_alpha = true,
3781 -- Tree and grass ABMs are no longer done from C++ (0.4.8)
3782 no_legacy_abms = true,
3783 -- Texture grouping is possible using parentheses (0.4.11)
3784 texture_names_parens = true,
3785 -- Unique Area ID for AreaStore:insert_area (0.4.14)
3786 area_store_custom_ids = true,
3787 -- add_entity supports passing initial staticdata to on_activate
3789 add_entity_with_staticdata = true,
3790 -- Chat messages are no longer predicted (0.4.16)
3791 no_chat_message_prediction = true,
3792 -- The transparency channel of textures can optionally be used on
3793 -- objects (ie: players and lua entities) (5.0.0)
3794 object_use_texture_alpha = true,
3795 -- Object selectionbox is settable independently from collisionbox
3797 object_independent_selectionbox = true,
3798 -- Specifies whether binary data can be uploaded or downloaded using
3799 -- the HTTP API (5.1.0)
3800 httpfetch_binary_data = true,
3801 -- Whether formspec_version[<version>] may be used (5.1.0)
3802 formspec_version_element = true,
3803 -- Whether AreaStore's IDs are kept on save/load (5.1.0)
3804 area_store_persistent_ids = true,
3807 * `minetest.has_feature(arg)`: returns `boolean, missing_features`
3808 * `arg`: string or table in format `{foo=true, bar=true}`
3809 * `missing_features`: `{foo=true, bar=true}`
3810 * `minetest.get_player_information(player_name)`: Table containing information
3811 about a player. Example return value:
3814 address = "127.0.0.1", -- IP address of client
3815 ip_version = 4, -- IPv4 / IPv6
3816 min_rtt = 0.01, -- minimum round trip time
3817 max_rtt = 0.2, -- maximum round trip time
3818 avg_rtt = 0.02, -- average round trip time
3819 min_jitter = 0.01, -- minimum packet time jitter
3820 max_jitter = 0.5, -- maximum packet time jitter
3821 avg_jitter = 0.03, -- average packet time jitter
3822 connection_uptime = 200, -- seconds since client connected
3823 protocol_version = 32, -- protocol version used by client
3824 formspec_version = 2, -- supported formspec version
3825 -- following information is available on debug build only!!!
3826 -- DO NOT USE IN MODS
3827 --ser_vers = 26, -- serialization version used by client
3828 --major = 0, -- major version number
3829 --minor = 4, -- minor version number
3830 --patch = 10, -- patch version number
3831 --vers_string = "0.4.9-git", -- full version string
3832 --state = "Active" -- current client state
3835 * `minetest.mkdir(path)`: returns success.
3836 * Creates a directory specified by `path`, creating parent directories
3837 if they don't exist.
3838 * `minetest.get_dir_list(path, [is_dir])`: returns list of entry names
3840 * nil: return all entries,
3841 * true: return only subdirectory names, or
3842 * false: return only file names.
3843 * `minetest.safe_file_write(path, content)`: returns boolean indicating success
3844 * Replaces contents of file at path with new contents in a safe (atomic)
3845 way. Use this instead of below code when writing e.g. database files:
3846 `local f = io.open(path, "wb"); f:write(content); f:close()`
3847 * `minetest.get_version()`: returns a table containing components of the
3848 engine version. Components:
3849 * `project`: Name of the project, eg, "Minetest"
3850 * `string`: Simple version, eg, "1.2.3-dev"
3851 * `hash`: Full git version (only set if available),
3852 eg, "1.2.3-dev-01234567-dirty".
3853 Use this for informational purposes only. The information in the returned
3854 table does not represent the capabilities of the engine, nor is it
3855 reliable or verifiable. Compatible forks will have a different name and
3856 version entirely. To check for the presence of engine features, test
3857 whether the functions exported by the wanted features exist. For example:
3858 `if minetest.check_for_falling then ... end`.
3859 * `minetest.sha1(data, [raw])`: returns the sha1 hash of data
3860 * `data`: string of data to hash
3861 * `raw`: return raw bytes instead of hex digits, default: false
3866 * `minetest.debug(...)`
3867 * Equivalent to `minetest.log(table.concat({...}, "\t"))`
3868 * `minetest.log([level,] text)`
3869 * `level` is one of `"none"`, `"error"`, `"warning"`, `"action"`,
3870 `"info"`, or `"verbose"`. Default is `"none"`.
3872 Registration functions
3873 ----------------------
3875 Call these functions only at load time!
3879 * `minetest.register_node(name, node definition)`
3880 * `minetest.register_craftitem(name, item definition)`
3881 * `minetest.register_tool(name, item definition)`
3882 * `minetest.override_item(name, redefinition)`
3883 * Overrides fields of an item registered with register_node/tool/craftitem.
3884 * Note: Item must already be defined, (opt)depend on the mod defining it.
3885 * Example: `minetest.override_item("default:mese",
3886 {light_source=minetest.LIGHT_MAX})`
3887 * `minetest.unregister_item(name)`
3888 * Unregisters the item from the engine, and deletes the entry with key
3889 `name` from `minetest.registered_items` and from the associated item table
3890 according to its nature: `minetest.registered_nodes`, etc.
3891 * `minetest.register_entity(name, entity definition)`
3892 * `minetest.register_abm(abm definition)`
3893 * `minetest.register_lbm(lbm definition)`
3894 * `minetest.register_alias(alias, original_name)`
3895 * Also use this to set the 'mapgen aliases' needed in a game for the core
3896 mapgens. See [Mapgen aliases] section above.
3897 * `minetest.register_alias_force(alias, original_name)`
3898 * `minetest.register_ore(ore definition)`
3899 * Returns an integer object handle uniquely identifying the registered
3901 * The order of ore registrations determines the order of ore generation.
3902 * `minetest.register_biome(biome definition)`
3903 * Returns an integer object handle uniquely identifying the registered
3904 biome on success. To get the biome ID, use `minetest.get_biome_id`.
3905 * `minetest.unregister_biome(name)`
3906 * Unregisters the biome from the engine, and deletes the entry with key
3907 `name` from `minetest.registered_biomes`.
3908 * `minetest.register_decoration(decoration definition)`
3909 * Returns an integer object handle uniquely identifying the registered
3910 decoration on success. To get the decoration ID, use
3911 `minetest.get_decoration_id`.
3912 * The order of decoration registrations determines the order of decoration
3914 * `minetest.register_schematic(schematic definition)`
3915 * Returns an integer object handle uniquely identifying the registered
3916 schematic on success.
3917 * If the schematic is loaded from a file, the `name` field is set to the
3919 * If the function is called when loading the mod, and `name` is a relative
3920 path, then the current mod path will be prepended to the schematic
3922 * `minetest.clear_registered_ores()`
3923 * Clears all ores currently registered.
3924 * `minetest.clear_registered_biomes()`
3925 * Clears all biomes currently registered.
3926 * `minetest.clear_registered_decorations()`
3927 * Clears all decorations currently registered.
3928 * `minetest.clear_registered_schematics()`
3929 * Clears all schematics currently registered.
3933 * `minetest.register_craft(recipe)`
3934 * Check recipe table syntax for different types below.
3935 * `minetest.clear_craft(recipe)`
3936 * Will erase existing craft based either on output item or on input recipe.
3937 * Specify either output or input only. If you specify both, input will be
3938 ignored. For input use the same recipe table syntax as for
3939 `minetest.register_craft(recipe)`. For output specify only the item,
3941 * Returns false if no erase candidate could be found, otherwise returns true.
3942 * **Warning**! The type field ("shaped", "cooking" or any other) will be
3943 ignored if the recipe contains output. Erasing is then done independently
3944 from the crafting method.
3945 * `minetest.register_chatcommand(cmd, chatcommand definition)`
3946 * `minetest.override_chatcommand(name, redefinition)`
3947 * Overrides fields of a chatcommand registered with `register_chatcommand`.
3948 * `minetest.unregister_chatcommand(name)`
3949 * Unregisters a chatcommands registered with `register_chatcommand`.
3950 * `minetest.register_privilege(name, definition)`
3951 * `definition` can be a description or a definition table (see [Privilege
3953 * If it is a description, the priv will be granted to singleplayer and admin
3955 * To allow players with `basic_privs` to grant, see the `basic_privs`
3956 minetest.conf setting.
3957 * `minetest.register_authentication_handler(authentication handler definition)`
3958 * Registers an auth handler that overrides the builtin one.
3959 * This function can be called by a single mod once only.
3961 Global callback registration functions
3962 --------------------------------------
3964 Call these functions only at load time!
3966 * `minetest.register_globalstep(function(dtime))`
3967 * Called every server step, usually interval of 0.1s
3968 * `minetest.register_on_mods_loaded(function())`
3969 * Called after mods have finished loading and before the media is cached or the
3971 * `minetest.register_on_shutdown(function())`
3972 * Called before server shutdown
3973 * **Warning**: If the server terminates abnormally (i.e. crashes), the
3974 registered callbacks **will likely not be run**. Data should be saved at
3975 semi-frequent intervals as well as on server shutdown.
3976 * `minetest.register_on_placenode(function(pos, newnode, placer, oldnode, itemstack, pointed_thing))`
3977 * Called when a node has been placed
3978 * If return `true` no item is taken from `itemstack`
3979 * `placer` may be any valid ObjectRef or nil.
3980 * **Not recommended**; use `on_construct` or `after_place_node` in node
3981 definition whenever possible.
3982 * `minetest.register_on_dignode(function(pos, oldnode, digger))`
3983 * Called when a node has been dug.
3984 * **Not recommended**; Use `on_destruct` or `after_dig_node` in node
3985 definition whenever possible.
3986 * `minetest.register_on_punchnode(function(pos, node, puncher, pointed_thing))`
3987 * Called when a node is punched
3988 * `minetest.register_on_generated(function(minp, maxp, blockseed))`
3989 * Called after generating a piece of world. Modifying nodes inside the area
3990 is a bit faster than usually.
3991 * `minetest.register_on_newplayer(function(ObjectRef))`
3992 * Called after a new player has been created
3993 * `minetest.register_on_punchplayer(function(player, hitter, time_from_last_punch, tool_capabilities, dir, damage))`
3994 * Called when a player is punched
3995 * Note: This callback is invoked even if the punched player is dead.
3996 * `player`: ObjectRef - Player that was punched
3997 * `hitter`: ObjectRef - Player that hit
3998 * `time_from_last_punch`: Meant for disallowing spamming of clicks
4000 * `tool_capabilities`: Capability table of used tool (can be nil)
4001 * `dir`: Unit vector of direction of punch. Always defined. Points from
4002 the puncher to the punched.
4003 * `damage`: Number that represents the damage calculated by the engine
4004 * should return `true` to prevent the default damage mechanism
4005 * `minetest.register_on_player_hpchange(function(player, hp_change, reason), modifier)`
4006 * Called when the player gets damaged or healed
4007 * `player`: ObjectRef of the player
4008 * `hp_change`: the amount of change. Negative when it is damage.
4009 * `reason`: a PlayerHPChangeReason table.
4010 * The `type` field will have one of the following values:
4011 * `set_hp`: A mod or the engine called `set_hp` without
4012 giving a type - use this for custom damage types.
4013 * `punch`: Was punched. `reason.object` will hold the puncher, or nil if none.
4015 * `node_damage`: `damage_per_second` from a neighbouring node.
4016 `reason.node` will hold the node name or nil.
4019 * Any of the above types may have additional fields from mods.
4020 * `reason.from` will be `mod` or `engine`.
4021 * `modifier`: when true, the function should return the actual `hp_change`.
4022 Note: modifiers only get a temporary `hp_change` that can be modified by later modifiers.
4023 Modifiers can return true as a second argument to stop the execution of further functions.
4024 Non-modifiers receive the final HP change calculated by the modifiers.
4025 * `minetest.register_on_dieplayer(function(ObjectRef, reason))`
4026 * Called when a player dies
4027 * `reason`: a PlayerHPChangeReason table, see register_on_player_hpchange
4028 * `minetest.register_on_respawnplayer(function(ObjectRef))`
4029 * Called when player is to be respawned
4030 * Called _before_ repositioning of player occurs
4031 * return true in func to disable regular player placement
4032 * `minetest.register_on_prejoinplayer(function(name, ip))`
4033 * Called before a player joins the game
4034 * If it returns a string, the player is disconnected with that string as
4036 * `minetest.register_on_joinplayer(function(ObjectRef))`
4037 * Called when a player joins the game
4038 * `minetest.register_on_leaveplayer(function(ObjectRef, timed_out))`
4039 * Called when a player leaves the game
4040 * `timed_out`: True for timeout, false for other reasons.
4041 * `minetest.register_on_auth_fail(function(name, ip))`
4042 * Called when a client attempts to log into an account but supplies the
4044 * `ip`: The IP address of the client.
4045 * `name`: The account the client attempted to log into.
4046 * `minetest.register_on_cheat(function(ObjectRef, cheat))`
4047 * Called when a player cheats
4048 * `cheat`: `{type=<cheat_type>}`, where `<cheat_type>` is one of:
4050 * `interacted_too_far`
4051 * `interacted_while_dead`
4052 * `finished_unknown_dig`
4055 * `minetest.register_on_chat_message(function(name, message))`
4056 * Called always when a player says something
4057 * Return `true` to mark the message as handled, which means that it will
4058 not be sent to other players.
4059 * `minetest.register_on_player_receive_fields(function(player, formname, fields))`
4060 * Called when the server received input from `player` in a formspec with
4061 the given `formname`. Specifically, this is called on any of the
4063 * a button was pressed,
4064 * Enter was pressed while the focus was on a text field
4065 * a checkbox was toggled,
4066 * something was selecteed in a drop-down list,
4067 * a different tab was selected,
4068 * selection was changed in a textlist or table,
4069 * an entry was double-clicked in a textlist or table,
4070 * a scrollbar was moved, or
4071 * the form was actively closed by the player.
4072 * Fields are sent for formspec elements which define a field. `fields`
4073 is a table containing each formspecs element value (as string), with
4074 the `name` parameter as index for each. The value depends on the
4075 formspec element type:
4076 * `button` and variants: If pressed, contains the user-facing button
4077 text as value. If not pressed, is `nil`
4078 * `field`, `textarea` and variants: Text in the field
4079 * `dropdown`: Text of selected item
4080 * `tabheader`: Tab index, starting with `"1"` (only if tab changed)
4081 * `checkbox`: `"true"` if checked, `"false"` if unchecked
4082 * `textlist`: See `minetest.explode_textlist_event`
4083 * `table`: See `minetest.explode_table_event`
4084 * `scrollbar`: See `minetest.explode_scrollbar_event`
4085 * Special case: `["quit"]="true"` is sent when the user actively
4086 closed the form by mouse click, keypress or through a button_exit[]
4088 * Special case: `["key_enter"]="true"` is sent when the user pressed
4089 the Enter key and the focus was either nowhere (causing the formspec
4090 to be closed) or on a button. If the focus was on a text field,
4091 additionally, the index `key_enter_field` contains the name of the
4092 text field. See also: `field_close_on_enter`.
4093 * Newest functions are called first
4094 * If function returns `true`, remaining functions are not called
4095 * `minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv))`
4096 * Called when `player` crafts something
4097 * `itemstack` is the output
4098 * `old_craft_grid` contains the recipe (Note: the one in the inventory is
4100 * `craft_inv` is the inventory with the crafting grid
4101 * Return either an `ItemStack`, to replace the output, or `nil`, to not
4103 * `minetest.register_craft_predict(function(itemstack, player, old_craft_grid, craft_inv))`
4104 * The same as before, except that it is called before the player crafts, to
4105 make craft prediction, and it should not change anything.
4106 * `minetest.register_allow_player_inventory_action(function(player, action, inventory, inventory_info))`
4107 * Determinates how much of a stack may be taken, put or moved to a
4109 * `player` (type `ObjectRef`) is the player who modified the inventory
4110 `inventory` (type `InvRef`).
4111 * List of possible `action` (string) values and their
4112 `inventory_info` (table) contents:
4113 * `move`: `{from_list=string, to_list=string, from_index=number, to_index=number, count=number}`
4114 * `put`: `{listname=string, index=number, stack=ItemStack}`
4115 * `take`: Same as `put`
4116 * Return a numeric value to limit the amount of items to be taken, put or
4117 moved. A value of `-1` for `take` will make the source stack infinite.
4118 * `minetest.register_on_player_inventory_action(function(player, action, inventory, inventory_info))`
4119 * Called after a take, put or move event from/to/in a player inventory
4120 * Function arguments: see `minetest.register_allow_player_inventory_action`
4121 * Does not accept or handle any return value.
4122 * `minetest.register_on_protection_violation(function(pos, name))`
4123 * Called by `builtin` and mods when a player violates protection at a
4124 position (eg, digs a node or punches a protected entity).
4125 * The registered functions can be called using
4126 `minetest.record_protection_violation`.
4127 * The provided function should check that the position is protected by the
4128 mod calling this function before it prints a message, if it does, to
4129 allow for multiple protection mods.
4130 * `minetest.register_on_item_eat(function(hp_change, replace_with_item, itemstack, user, pointed_thing))`
4131 * Called when an item is eaten, by `minetest.item_eat`
4132 * Return `itemstack` to cancel the default item eat response (i.e.: hp increase).
4133 * `minetest.register_on_priv_grant(function(name, granter, priv))`
4134 * Called when `granter` grants the priv `priv` to `name`.
4135 * Note that the callback will be called twice if it's done by a player,
4136 once with granter being the player name, and again with granter being nil.
4137 * `minetest.register_on_priv_revoke(function(name, revoker, priv))`
4138 * Called when `revoker` revokes the priv `priv` from `name`.
4139 * Note that the callback will be called twice if it's done by a player,
4140 once with revoker being the player name, and again with revoker being nil.
4141 * `minetest.register_can_bypass_userlimit(function(name, ip))`
4142 * Called when `name` user connects with `ip`.
4143 * Return `true` to by pass the player limit
4144 * `minetest.register_on_modchannel_message(function(channel_name, sender, message))`
4145 * Called when an incoming mod channel message is received
4146 * You should have joined some channels to receive events.
4147 * If message comes from a server mod, `sender` field is an empty string.
4152 * `minetest.settings`: Settings object containing all of the settings from the
4153 main config file (`minetest.conf`).
4154 * `minetest.setting_get_pos(name)`: Loads a setting from the main settings and
4155 parses it as a position (in the format `(1,2,3)`). Returns a position or nil.
4160 * `minetest.string_to_privs(str)`: returns `{priv1=true,...}`
4161 * `minetest.privs_to_string(privs)`: returns `"priv1,priv2,..."`
4162 * Convert between two privilege representations
4163 * `minetest.get_player_privs(name) -> {priv1=true,...}`
4164 * `minetest.check_player_privs(player_or_name, ...)`:
4165 returns `bool, missing_privs`
4166 * A quickhand for checking privileges.
4167 * `player_or_name`: Either a Player object or the name of a player.
4168 * `...` is either a list of strings, e.g. `"priva", "privb"` or
4169 a table, e.g. `{ priva = true, privb = true }`.
4171 * `minetest.check_password_entry(name, entry, password)`
4172 * Returns true if the "password entry" for a player with name matches given
4173 password, false otherwise.
4174 * The "password entry" is the password representation generated by the
4175 engine as returned as part of a `get_auth()` call on the auth handler.
4176 * Only use this function for making it possible to log in via password from
4177 external protocols such as IRC, other uses are frowned upon.
4178 * `minetest.get_password_hash(name, raw_password)`
4179 * Convert a name-password pair to a password hash that Minetest can use.
4180 * The returned value alone is not a good basis for password checks based
4181 on comparing the password hash in the database with the password hash
4182 from the function, with an externally provided password, as the hash
4183 in the db might use the new SRP verifier format.
4184 * For this purpose, use `minetest.check_password_entry` instead.
4185 * `minetest.get_player_ip(name)`: returns an IP address string for the player
4187 * The player needs to be online for this to be successful.
4189 * `minetest.get_auth_handler()`: Return the currently active auth handler
4190 * See the [Authentication handler definition]
4191 * Use this to e.g. get the authentication data for a player:
4192 `local auth_data = minetest.get_auth_handler().get_auth(playername)`
4193 * `minetest.notify_authentication_modified(name)`
4194 * Must be called by the authentication handler for privilege changes.
4195 * `name`: string; if omitted, all auth data should be considered modified
4196 * `minetest.set_player_password(name, password_hash)`: Set password hash of
4198 * `minetest.set_player_privs(name, {priv1=true,...})`: Set privileges of player
4200 * `minetest.auth_reload()`
4201 * See `reload()` in authentication handler definition
4203 `minetest.set_player_password`, `minetest_set_player_privs`,
4204 `minetest_get_player_privs` and `minetest.auth_reload` call the authentication
4210 * `minetest.chat_send_all(text)`
4211 * `minetest.chat_send_player(name, text)`
4212 * `minetest.format_chat_message(name, message)`
4213 * Used by the server to format a chat message, based on the setting `chat_message_format`.
4214 Refer to the documentation of the setting for a list of valid placeholders.
4215 * Takes player name and message, and returns the formatted string to be sent to players.
4216 * Can be redefined by mods if required, for things like colored names or messages.
4217 * **Only** the first occurrence of each placeholder will be replaced.
4222 * `minetest.set_node(pos, node)`
4223 * `minetest.add_node(pos, node)`: alias to `minetest.set_node`
4224 * Set node at position `pos`
4225 * `node`: table `{name=string, param1=number, param2=number}`
4226 * If param1 or param2 is omitted, it's set to `0`.
4227 * e.g. `minetest.set_node({x=0, y=10, z=0}, {name="default:wood"})`
4228 * `minetest.bulk_set_node({pos1, pos2, pos3, ...}, node)`
4229 * Set node on all positions set in the first argument.
4230 * e.g. `minetest.bulk_set_node({{x=0, y=1, z=1}, {x=1, y=2, z=2}}, {name="default:stone"})`
4231 * For node specification or position syntax see `minetest.set_node` call
4232 * Faster than set_node due to single call, but still considerably slower
4233 than Lua Voxel Manipulators (LVM) for large numbers of nodes.
4234 Unlike LVMs, this will call node callbacks. It also allows setting nodes
4235 in spread out positions which would cause LVMs to waste memory.
4236 For setting a cube, this is 1.3x faster than set_node whereas LVM is 20
4238 * `minetest.swap_node(pos, node)`
4239 * Set node at position, but don't remove metadata
4240 * `minetest.remove_node(pos)`
4241 * By default it does the same as `minetest.set_node(pos, {name="air"})`
4242 * `minetest.get_node(pos)`
4243 * Returns the node at the given position as table in the format
4244 `{name="node_name", param1=0, param2=0}`,
4245 returns `{name="ignore", param1=0, param2=0}` for unloaded areas.
4246 * `minetest.get_node_or_nil(pos)`
4247 * Same as `get_node` but returns `nil` for unloaded areas.
4248 * `minetest.get_node_light(pos, timeofday)`
4249 * Gets the light value at the given position. Note that the light value
4250 "inside" the node at the given position is returned, so you usually want
4251 to get the light value of a neighbor.
4252 * `pos`: The position where to measure the light.
4253 * `timeofday`: `nil` for current time, `0` for night, `0.5` for day
4254 * Returns a number between `0` and `15` or `nil`
4255 * `minetest.place_node(pos, node)`
4256 * Place node with the same effects that a player would cause
4257 * `minetest.dig_node(pos)`
4258 * Dig node with the same effects that a player would cause
4259 * Returns `true` if successful, `false` on failure (e.g. protected location)
4260 * `minetest.punch_node(pos)`
4261 * Punch node with the same effects that a player would cause
4262 * `minetest.spawn_falling_node(pos)`
4263 * Change node into falling node
4264 * Returns `true` if successful, `false` on failure
4266 * `minetest.find_nodes_with_meta(pos1, pos2)`
4267 * Get a table of positions of nodes that have metadata within a region
4269 * `minetest.get_meta(pos)`
4270 * Get a `NodeMetaRef` at that position
4271 * `minetest.get_node_timer(pos)`
4272 * Get `NodeTimerRef`
4274 * `minetest.add_entity(pos, name, [staticdata])`: Spawn Lua-defined entity at
4276 * Returns `ObjectRef`, or `nil` if failed
4277 * `minetest.add_item(pos, item)`: Spawn item
4278 * Returns `ObjectRef`, or `nil` if failed
4279 * `minetest.get_player_by_name(name)`: Get an `ObjectRef` to a player
4280 * `minetest.get_objects_inside_radius(pos, radius)`: returns a list of
4282 * `radius`: using an euclidean metric
4283 * `minetest.set_timeofday(val)`
4284 * `val` is between `0` and `1`; `0` for midnight, `0.5` for midday
4285 * `minetest.get_timeofday()`
4286 * `minetest.get_gametime()`: returns the time, in seconds, since the world was
4288 * `minetest.get_day_count()`: returns number days elapsed since world was
4290 * accounts for time changes.
4291 * `minetest.find_node_near(pos, radius, nodenames, [search_center])`: returns
4293 * `radius`: using a maximum metric
4294 * `nodenames`: e.g. `{"ignore", "group:tree"}` or `"default:dirt"`
4295 * `search_center` is an optional boolean (default: `false`)
4296 If true `pos` is also checked for the nodes
4297 * `minetest.find_nodes_in_area(pos1, pos2, nodenames)`: returns a list of
4299 * `nodenames`: e.g. `{"ignore", "group:tree"}` or `"default:dirt"`
4300 * First return value: Table with all node positions
4301 * Second return value: Table with the count of each node with the node name
4303 * Area volume is limited to 4,096,000 nodes
4304 * `minetest.find_nodes_in_area_under_air(pos1, pos2, nodenames)`: returns a
4306 * `nodenames`: e.g. `{"ignore", "group:tree"}` or `"default:dirt"`
4307 * Return value: Table with all node positions with a node air above
4308 * Area volume is limited to 4,096,000 nodes
4309 * `minetest.get_perlin(noiseparams)`
4310 * `minetest.get_perlin(seeddiff, octaves, persistence, spread)`
4311 * Return world-specific perlin noise (`int(worldseed)+seeddiff`)
4312 * `minetest.get_voxel_manip([pos1, pos2])`
4313 * Return voxel manipulator object.
4314 * Loads the manipulator from the map if positions are passed.
4315 * `minetest.set_gen_notify(flags, {deco_ids})`
4316 * Set the types of on-generate notifications that should be collected.
4317 * `flags` is a flag field with the available flags:
4325 * The second parameter is a list of IDs of decorations which notification
4327 * `minetest.get_gen_notify()`
4328 * Returns a flagstring and a table with the `deco_id`s.
4329 * `minetest.get_decoration_id(decoration_name)`
4330 * Returns the decoration ID number for the provided decoration name string,
4331 or `nil` on failure.
4332 * `minetest.get_mapgen_object(objectname)`
4333 * Return requested mapgen object if available (see [Mapgen objects])
4334 * `minetest.get_heat(pos)`
4335 * Returns the heat at the position, or `nil` on failure.
4336 * `minetest.get_humidity(pos)`
4337 * Returns the humidity at the position, or `nil` on failure.
4338 * `minetest.get_biome_data(pos)`
4339 * Returns a table containing:
4340 * `biome` the biome id of the biome at that position
4341 * `heat` the heat at the position
4342 * `humidity` the humidity at the position
4343 * Or returns `nil` on failure.
4344 * `minetest.get_biome_id(biome_name)`
4345 * Returns the biome id, as used in the biomemap Mapgen object and returned
4346 by `minetest.get_biome_data(pos)`, for a given biome_name string.
4347 * `minetest.get_biome_name(biome_id)`
4348 * Returns the biome name string for the provided biome id, or `nil` on
4350 * If no biomes have been registered, such as in mgv6, returns `default`.
4351 * `minetest.get_mapgen_params()`
4352 * Deprecated: use `minetest.get_mapgen_setting(name)` instead.
4353 * Returns a table containing:
4359 * `minetest.set_mapgen_params(MapgenParams)`
4360 * Deprecated: use `minetest.set_mapgen_setting(name, value, override)`
4362 * Set map generation parameters.
4363 * Function cannot be called after the registration period; only
4364 initialization and `on_mapgen_init`.
4365 * Takes a table as an argument with the fields:
4371 * Leave field unset to leave that parameter unchanged.
4372 * `flags` contains a comma-delimited string of flags to set, or if the
4373 prefix `"no"` is attached, clears instead.
4374 * `flags` is in the same format and has the same options as `mg_flags` in
4376 * `minetest.get_mapgen_setting(name)`
4377 * Gets the *active* mapgen setting (or nil if none exists) in string
4378 format with the following order of precedence:
4379 1) Settings loaded from map_meta.txt or overrides set during mod
4381 2) Settings set by mods without a metafile override
4382 3) Settings explicitly set in the user config file, minetest.conf
4383 4) Settings set as the user config default
4384 * `minetest.get_mapgen_setting_noiseparams(name)`
4385 * Same as above, but returns the value as a NoiseParams table if the
4386 setting `name` exists and is a valid NoiseParams.
4387 * `minetest.set_mapgen_setting(name, value, [override_meta])`
4388 * Sets a mapgen param to `value`, and will take effect if the corresponding
4389 mapgen setting is not already present in map_meta.txt.
4390 * `override_meta` is an optional boolean (default: `false`). If this is set
4391 to true, the setting will become the active setting regardless of the map
4393 * Note: to set the seed, use `"seed"`, not `"fixed_map_seed"`.
4394 * `minetest.set_mapgen_setting_noiseparams(name, value, [override_meta])`
4395 * Same as above, except value is a NoiseParams table.
4396 * `minetest.set_noiseparams(name, noiseparams, set_default)`
4397 * Sets the noiseparams setting of `name` to the noiseparams table specified
4399 * `set_default` is an optional boolean (default: `true`) that specifies
4400 whether the setting should be applied to the default config or current
4402 * `minetest.get_noiseparams(name)`
4403 * Returns a table of the noiseparams for name.
4404 * `minetest.generate_ores(vm, pos1, pos2)`
4405 * Generate all registered ores within the VoxelManip `vm` and in the area
4406 from `pos1` to `pos2`.
4407 * `pos1` and `pos2` are optional and default to mapchunk minp and maxp.
4408 * `minetest.generate_decorations(vm, pos1, pos2)`
4409 * Generate all registered decorations within the VoxelManip `vm` and in the
4410 area from `pos1` to `pos2`.
4411 * `pos1` and `pos2` are optional and default to mapchunk minp and maxp.
4412 * `minetest.clear_objects([options])`
4413 * Clear all objects in the environment
4414 * Takes an optional table as an argument with the field `mode`.
4415 * mode = `"full"` : Load and go through every mapblock, clearing
4417 * mode = `"quick"`: Clear objects immediately in loaded mapblocks,
4418 clear objects in unloaded mapblocks only when the
4419 mapblocks are next activated.
4420 * `minetest.load_area(pos1[, pos2])`
4421 * Load the mapblocks containing the area from `pos1` to `pos2`.
4422 `pos2` defaults to `pos1` if not specified.
4423 * This function does not trigger map generation.
4424 * `minetest.emerge_area(pos1, pos2, [callback], [param])`
4425 * Queue all blocks in the area from `pos1` to `pos2`, inclusive, to be
4426 asynchronously fetched from memory, loaded from disk, or if inexistent,
4428 * If `callback` is a valid Lua function, this will be called for each block
4430 * The function signature of callback is:
4431 `function EmergeAreaCallback(blockpos, action, calls_remaining, param)`
4432 * `blockpos` is the *block* coordinates of the block that had been
4434 * `action` could be one of the following constant values:
4435 * `minetest.EMERGE_CANCELLED`
4436 * `minetest.EMERGE_ERRORED`
4437 * `minetest.EMERGE_FROM_MEMORY`
4438 * `minetest.EMERGE_FROM_DISK`
4439 * `minetest.EMERGE_GENERATED`
4440 * `calls_remaining` is the number of callbacks to be expected after
4442 * `param` is the user-defined parameter passed to emerge_area (or
4443 nil if the parameter was absent).
4444 * `minetest.delete_area(pos1, pos2)`
4445 * delete all mapblocks in the area from pos1 to pos2, inclusive
4446 * `minetest.line_of_sight(pos1, pos2)`: returns `boolean, pos`
4447 * Checks if there is anything other than air between pos1 and pos2.
4448 * Returns false if something is blocking the sight.
4449 * Returns the position of the blocking node when `false`
4450 * `pos1`: First position
4451 * `pos2`: Second position
4452 * `minetest.raycast(pos1, pos2, objects, liquids)`: returns `Raycast`
4453 * Creates a `Raycast` object.
4454 * `pos1`: start of the ray
4455 * `pos2`: end of the ray
4456 * `objects`: if false, only nodes will be returned. Default is `true`.
4457 * `liquids`: if false, liquid nodes won't be returned. Default is `false`.
4458 * `minetest.find_path(pos1,pos2,searchdistance,max_jump,max_drop,algorithm)`
4459 * returns table containing path
4460 * returns a table of 3D points representing a path from `pos1` to `pos2` or
4462 * `pos1`: start position
4463 * `pos2`: end position
4464 * `searchdistance`: number of blocks to search in each direction using a
4466 * `max_jump`: maximum height difference to consider walkable
4467 * `max_drop`: maximum height difference to consider droppable
4468 * `algorithm`: One of `"A*_noprefetch"` (default), `"A*"`, `"Dijkstra"`
4469 * `minetest.spawn_tree (pos, {treedef})`
4470 * spawns L-system tree at given `pos` with definition in `treedef` table
4471 * `minetest.transforming_liquid_add(pos)`
4472 * add node to liquid update queue
4473 * `minetest.get_node_max_level(pos)`
4474 * get max available level for leveled node
4475 * `minetest.get_node_level(pos)`
4476 * get level of leveled node (water, snow)
4477 * `minetest.set_node_level(pos, level)`
4478 * set level of leveled node, default `level` equals `1`
4479 * if `totallevel > maxlevel`, returns rest (`total-max`).
4480 * `minetest.add_node_level(pos, level)`
4481 * increase level of leveled node by level, default `level` equals `1`
4482 * if `totallevel > maxlevel`, returns rest (`total-max`)
4483 * can be negative for decreasing
4484 * `minetest.fix_light(pos1, pos2)`: returns `true`/`false`
4485 * resets the light in a cuboid-shaped part of
4486 the map and removes lighting bugs.
4487 * Loads the area if it is not loaded.
4488 * `pos1` is the corner of the cuboid with the least coordinates
4489 (in node coordinates), inclusive.
4490 * `pos2` is the opposite corner of the cuboid, inclusive.
4491 * The actual updated cuboid might be larger than the specified one,
4492 because only whole map blocks can be updated.
4493 The actual updated area consists of those map blocks that intersect
4494 with the given cuboid.
4495 * However, the neighborhood of the updated area might change
4496 as well, as light can spread out of the cuboid, also light
4498 * returns `false` if the area is not fully generated,
4500 * `minetest.check_single_for_falling(pos)`
4501 * causes an unsupported `group:falling_node` node to fall and causes an
4502 unattached `group:attached_node` node to fall.
4503 * does not spread these updates to neighbours.
4504 * `minetest.check_for_falling(pos)`
4505 * causes an unsupported `group:falling_node` node to fall and causes an
4506 unattached `group:attached_node` node to fall.
4507 * spread these updates to neighbours and can cause a cascade
4509 * `minetest.get_spawn_level(x, z)`
4510 * Returns a player spawn y co-ordinate for the provided (x, z)
4511 co-ordinates, or `nil` for an unsuitable spawn point.
4512 * For most mapgens a 'suitable spawn point' is one with y between
4513 `water_level` and `water_level + 16`, and in mgv7 well away from rivers,
4514 so `nil` will be returned for many (x, z) co-ordinates.
4515 * The spawn level returned is for a player spawn in unmodified terrain.
4516 * The spawn level is intentionally above terrain level to cope with
4517 full-node biome 'dust' nodes.
4522 You can find mod channels communication scheme in `doc/mod_channels.png`.
4524 * `minetest.mod_channel_join(channel_name)`
4525 * Server joins channel `channel_name`, and creates it if necessary. You
4526 should listen for incoming messages with
4527 `minetest.register_on_modchannel_message`
4532 `minetest.get_inventory(location)`: returns an `InvRef`
4535 * `{type="player", name="celeron55"}`
4536 * `{type="node", pos={x=, y=, z=}}`
4537 * `{type="detached", name="creative"}`
4538 * `minetest.create_detached_inventory(name, callbacks, [player_name])`: returns
4540 * `callbacks`: See [Detached inventory callbacks]
4541 * `player_name`: Make detached inventory available to one player
4542 exclusively, by default they will be sent to every player (even if not
4544 Note that this parameter is mostly just a workaround and will be removed
4546 * Creates a detached inventory. If it already exists, it is cleared.
4547 * `minetest.remove_detached_inventory(name)`
4548 * Returns a `boolean` indicating whether the removal succeeded.
4549 * `minetest.do_item_eat(hp_change, replace_with_item, itemstack, user, pointed_thing)`:
4550 returns left over ItemStack.
4551 * See `minetest.item_eat` and `minetest.register_on_item_eat`
4556 * `minetest.show_formspec(playername, formname, formspec)`
4557 * `playername`: name of player to show formspec
4558 * `formname`: name passed to `on_player_receive_fields` callbacks.
4559 It should follow the `"modname:<whatever>"` naming convention
4560 * `formspec`: formspec to display
4561 * `minetest.close_formspec(playername, formname)`
4562 * `playername`: name of player to close formspec
4563 * `formname`: has to exactly match the one given in `show_formspec`, or the
4564 formspec will not close.
4565 * calling `show_formspec(playername, formname, "")` is equal to this
4567 * to close a formspec regardless of the formname, call
4568 `minetest.close_formspec(playername, "")`.
4569 **USE THIS ONLY WHEN ABSOLUTELY NECESSARY!**
4570 * `minetest.formspec_escape(string)`: returns a string
4571 * escapes the characters "[", "]", "\", "," and ";", which can not be used
4573 * `minetest.explode_table_event(string)`: returns a table
4574 * returns e.g. `{type="CHG", row=1, column=2}`
4576 * `"INV"`: no row selected
4578 * `"DCL"`: double-click
4579 * `minetest.explode_textlist_event(string)`: returns a table
4580 * returns e.g. `{type="CHG", index=1}`
4582 * `"INV"`: no row selected
4584 * `"DCL"`: double-click
4585 * `minetest.explode_scrollbar_event(string)`: returns a table
4586 * returns e.g. `{type="CHG", value=500}`
4588 * `"INV"`: something failed
4589 * `"CHG"`: has been changed
4590 * `"VAL"`: not changed
4595 * `minetest.inventorycube(img1, img2, img3)`
4596 * Returns a string for making an image of a cube (useful as an item image)
4597 * `minetest.get_pointed_thing_position(pointed_thing, above)`
4598 * Returns the position of a `pointed_thing` or `nil` if the `pointed_thing`
4599 does not refer to a node or entity.
4600 * If the optional `above` parameter is true and the `pointed_thing` refers
4601 to a node, then it will return the `above` position of the `pointed_thing`.
4602 * `minetest.dir_to_facedir(dir, is6d)`
4603 * Convert a vector to a facedir value, used in `param2` for
4604 `paramtype2="facedir"`.
4605 * passing something non-`nil`/`false` for the optional second parameter
4606 causes it to take the y component into account.
4607 * `minetest.facedir_to_dir(facedir)`
4608 * Convert a facedir back into a vector aimed directly out the "back" of a
4610 * `minetest.dir_to_wallmounted(dir)`
4611 * Convert a vector to a wallmounted value, used for
4612 `paramtype2="wallmounted"`.
4613 * `minetest.wallmounted_to_dir(wallmounted)`
4614 * Convert a wallmounted value back into a vector aimed directly out the
4616 * `minetest.dir_to_yaw(dir)`
4617 * Convert a vector into a yaw (angle)
4618 * `minetest.yaw_to_dir(yaw)`
4619 * Convert yaw (angle) to a vector
4620 * `minetest.is_colored_paramtype(ptype)`
4621 * Returns a boolean. Returns `true` if the given `paramtype2` contains
4622 color information (`color`, `colorwallmounted` or `colorfacedir`).
4623 * `minetest.strip_param2_color(param2, paramtype2)`
4624 * Removes everything but the color information from the
4625 given `param2` value.
4626 * Returns `nil` if the given `paramtype2` does not contain color
4628 * `minetest.get_node_drops(nodename, toolname)`
4629 * Returns list of item names.
4630 * **Note**: This will be removed or modified in a future version.
4631 * `minetest.get_craft_result(input)`: returns `output, decremented_input`
4632 * `input.method` = `"normal"` or `"cooking"` or `"fuel"`
4633 * `input.width` = for example `3`
4634 * `input.items` = for example
4635 `{stack1, stack2, stack3, stack4, stack 5, stack 6, stack 7, stack 8, stack 9}`
4636 * `output.item` = `ItemStack`, if unsuccessful: empty `ItemStack`
4637 * `output.time` = a number, if unsuccessful: `0`
4638 * `output.replacements` = list of `ItemStack`s that couldn't be placed in
4639 `decremented_input.items`
4640 * `decremented_input` = like `input`
4641 * `minetest.get_craft_recipe(output)`: returns input
4642 * returns last registered recipe for output item (node)
4643 * `output` is a node or item type such as `"default:torch"`
4644 * `input.method` = `"normal"` or `"cooking"` or `"fuel"`
4645 * `input.width` = for example `3`
4646 * `input.items` = for example
4647 `{stack1, stack2, stack3, stack4, stack 5, stack 6, stack 7, stack 8, stack 9}`
4648 * `input.items` = `nil` if no recipe found
4649 * `minetest.get_all_craft_recipes(query item)`: returns a table or `nil`
4650 * returns indexed table with all registered recipes for query item (node)
4651 or `nil` if no recipe was found.
4652 * recipe entry table:
4653 * `method`: 'normal' or 'cooking' or 'fuel'
4654 * `width`: 0-3, 0 means shapeless recipe
4655 * `items`: indexed [1-9] table with recipe items
4656 * `output`: string with item name and quantity
4657 * Example query for `"default:gold_ingot"` will return table:
4660 [1]={method = "cooking", width = 3, output = "default:gold_ingot",
4661 items = {1 = "default:gold_lump"}},
4662 [2]={method = "normal", width = 1, output = "default:gold_ingot 9",
4663 items = {1 = "default:goldblock"}}
4665 * `minetest.handle_node_drops(pos, drops, digger)`
4666 * `drops`: list of itemstrings
4667 * Handles drops from nodes after digging: Default action is to put them
4668 into digger's inventory.
4669 * Can be overridden to get different functionality (e.g. dropping items on
4671 * `minetest.itemstring_with_palette(item, palette_index)`: returns an item
4673 * Creates an item string which contains palette index information
4674 for hardware colorization. You can use the returned string
4675 as an output in a craft recipe.
4676 * `item`: the item stack which becomes colored. Can be in string,
4677 table and native form.
4678 * `palette_index`: this index is added to the item stack
4679 * `minetest.itemstring_with_color(item, colorstring)`: returns an item string
4680 * Creates an item string which contains static color information
4681 for hardware colorization. Use this method if you wish to colorize
4682 an item that does not own a palette. You can use the returned string
4683 as an output in a craft recipe.
4684 * `item`: the item stack which becomes colored. Can be in string,
4685 table and native form.
4686 * `colorstring`: the new color of the item stack
4691 * `minetest.rollback_get_node_actions(pos, range, seconds, limit)`:
4692 returns `{{actor, pos, time, oldnode, newnode}, ...}`
4693 * Find who has done something to a node, or near a node
4694 * `actor`: `"player:<name>"`, also `"liquid"`.
4695 * `minetest.rollback_revert_actions_by(actor, seconds)`: returns
4696 `boolean, log_messages`.
4697 * Revert latest actions of someone
4698 * `actor`: `"player:<name>"`, also `"liquid"`.
4700 Defaults for the `on_*` item definition functions
4701 -------------------------------------------------
4703 These functions return the leftover itemstack.
4705 * `minetest.item_place_node(itemstack, placer, pointed_thing[, param2, prevent_after_place])`
4706 * Place item as a node
4707 * `param2` overrides `facedir` and wallmounted `param2`
4708 * `prevent_after_place`: if set to `true`, `after_place_node` is not called
4709 for the newly placed node to prevent a callback and placement loop
4710 * returns `itemstack, success`
4711 * `minetest.item_place_object(itemstack, placer, pointed_thing)`
4713 * `minetest.item_place(itemstack, placer, pointed_thing, param2)`
4714 * Use one of the above based on what the item is.
4715 * Calls `on_rightclick` of `pointed_thing.under` if defined instead
4716 * **Note**: is not called when wielded item overrides `on_place`
4717 * `param2` overrides `facedir` and wallmounted `param2`
4718 * returns `itemstack, success`
4719 * `minetest.item_drop(itemstack, dropper, pos)`
4721 * `minetest.item_eat(hp_change, replace_with_item)`
4723 * `replace_with_item` is the itemstring which is added to the inventory.
4724 If the player is eating a stack, then replace_with_item goes to a
4725 different spot. Can be `nil`
4726 * See `minetest.do_item_eat`
4728 Defaults for the `on_punch` and `on_dig` node definition callbacks
4729 ------------------------------------------------------------------
4731 * `minetest.node_punch(pos, node, puncher, pointed_thing)`
4732 * Calls functions registered by `minetest.register_on_punchnode()`
4733 * `minetest.node_dig(pos, node, digger)`
4734 * Checks if node can be dug, puts item into inventory, removes node
4735 * Calls functions registered by `minetest.registered_on_dignodes()`
4740 * `minetest.sound_play(spec, parameters)`: returns a handle
4741 * `spec` is a `SimpleSoundSpec`
4742 * `parameters` is a sound parameter table
4743 * `minetest.sound_stop(handle)`
4744 * `minetest.sound_fade(handle, step, gain)`
4745 * `handle` is a handle returned by `minetest.sound_play`
4746 * `step` determines how fast a sound will fade.
4747 Negative step will lower the sound volume, positive step will increase
4749 * `gain` the target gain for the fade.
4754 * `minetest.after(time, func, ...)`
4755 * Call the function `func` after `time` seconds, may be fractional
4756 * Optional: Variable number of arguments that are passed to `func`
4761 * `minetest.request_shutdown([message],[reconnect],[delay])`: request for
4762 server shutdown. Will display `message` to clients.
4763 * `reconnect` == true displays a reconnect button
4764 * `delay` adds an optional delay (in seconds) before shutdown.
4765 Negative delay cancels the current active shutdown.
4766 Zero delay triggers an immediate shutdown.
4767 * `minetest.cancel_shutdown_requests()`: cancel current delayed shutdown
4768 * `minetest.get_server_status(name, joined)`
4769 * Returns the server status string when a player joins or when the command
4770 `/status` is called. Returns `nil` or an empty string when the message is
4772 * `joined`: Boolean value, indicates whether the function was called when
4774 * This function may be overwritten by mods to customize the status message.
4775 * `minetest.get_server_uptime()`: returns the server uptime in seconds
4776 * `minetest.remove_player(name)`: remove player from database (if they are not
4778 * As auth data is not removed, minetest.player_exists will continue to
4779 return true. Call the below method as well if you want to remove auth
4781 * Returns a code (0: successful, 1: no such player, 2: player is connected)
4782 * `minetest.remove_player_auth(name)`: remove player authentication data
4783 * Returns boolean indicating success (false if player nonexistant)
4788 * `minetest.get_ban_list()`: returns the ban list
4789 (same as `minetest.get_ban_description("")`).
4790 * `minetest.get_ban_description(ip_or_name)`: returns ban description (string)
4791 * `minetest.ban_player(name)`: ban a player
4792 * `minetest.unban_player_or_ip(name)`: unban player or IP address
4793 * `minetest.kick_player(name, [reason])`: disconnect a player with a optional
4799 * `minetest.add_particle(particle definition)`
4800 * Deprecated: `minetest.add_particle(pos, velocity, acceleration,
4801 expirationtime, size, collisiondetection, texture, playername)`
4803 * `minetest.add_particlespawner(particlespawner definition)`
4804 * Add a `ParticleSpawner`, an object that spawns an amount of particles
4805 over `time` seconds.
4806 * Returns an `id`, and -1 if adding didn't succeed
4807 * Deprecated: `minetest.add_particlespawner(amount, time,
4811 minexptime, maxexptime,
4813 collisiondetection, texture, playername)`
4815 * `minetest.delete_particlespawner(id, player)`
4816 * Delete `ParticleSpawner` with `id` (return value from
4817 `minetest.add_particlespawner`).
4818 * If playername is specified, only deletes on the player's client,
4819 otherwise on all clients.
4824 * `minetest.create_schematic(p1, p2, probability_list, filename, slice_prob_list)`
4825 * Create a schematic from the volume of map specified by the box formed by
4827 * Apply the specified probability and per-node force-place to the specified
4828 nodes according to the `probability_list`.
4829 * `probability_list` is an array of tables containing two fields, `pos`
4831 * `pos` is the 3D vector specifying the absolute coordinates of the
4832 node being modified,
4833 * `prob` is an integer value from `0` to `255` that encodes
4834 probability and per-node force-place. Probability has levels
4835 0-127, then 128 may be added to encode per-node force-place.
4836 For probability stated as 0-255, divide by 2 and round down to
4837 get values 0-127, then add 128 to apply per-node force-place.
4838 * If there are two or more entries with the same pos value, the
4840 * If `pos` is not inside the box formed by `p1` and `p2`, it is
4842 * If `probability_list` equals `nil`, no probabilities are applied.
4843 * Apply the specified probability to the specified horizontal slices
4844 according to the `slice_prob_list`.
4845 * `slice_prob_list` is an array of tables containing two fields, `ypos`
4847 * `ypos` indicates the y position of the slice with a probability
4848 applied, the lowest slice being `ypos = 0`.
4849 * If slice probability list equals `nil`, no slice probabilities
4851 * Saves schematic in the Minetest Schematic format to filename.
4853 * `minetest.place_schematic(pos, schematic, rotation, replacements, force_placement, flags)`
4854 * Place the schematic specified by schematic (see [Schematic specifier]) at
4856 * `rotation` can equal `"0"`, `"90"`, `"180"`, `"270"`, or `"random"`.
4857 * If the `rotation` parameter is omitted, the schematic is not rotated.
4858 * `replacements` = `{["old_name"] = "convert_to", ...}`
4859 * `force_placement` is a boolean indicating whether nodes other than `air`
4860 and `ignore` are replaced by the schematic.
4861 * Returns nil if the schematic could not be loaded.
4862 * **Warning**: Once you have loaded a schematic from a file, it will be
4863 cached. Future calls will always use the cached version and the
4864 replacement list defined for it, regardless of whether the file or the
4865 replacement list parameter have changed. The only way to load the file
4866 anew is to restart the server.
4867 * `flags` is a flag field with the available flags:
4872 * `minetest.place_schematic_on_vmanip(vmanip, pos, schematic, rotation, replacement, force_placement, flags)`:
4873 * This function is analogous to minetest.place_schematic, but places a
4874 schematic onto the specified VoxelManip object `vmanip` instead of the
4876 * Returns false if any part of the schematic was cut-off due to the
4877 VoxelManip not containing the full area required, and true if the whole
4878 schematic was able to fit.
4879 * Returns nil if the schematic could not be loaded.
4880 * After execution, any external copies of the VoxelManip contents are
4882 * `flags` is a flag field with the available flags:
4887 * `minetest.serialize_schematic(schematic, format, options)`
4888 * Return the serialized schematic specified by schematic
4889 (see [Schematic specifier])
4890 * in the `format` of either "mts" or "lua".
4891 * "mts" - a string containing the binary MTS data used in the MTS file
4893 * "lua" - a string containing Lua code representing the schematic in table
4895 * `options` is a table containing the following optional parameters:
4896 * If `lua_use_comments` is true and `format` is "lua", the Lua code
4897 generated will have (X, Z) position comments for every X row
4898 generated in the schematic data for easier reading.
4899 * If `lua_num_indent_spaces` is a nonzero number and `format` is "lua",
4900 the Lua code generated will use that number of spaces as indentation
4901 instead of a tab character.
4903 * `minetest.read_schematic(schematic, options)`
4904 * Returns a Lua table representing the schematic (see: [Schematic specifier])
4905 * `schematic` is the schematic to read (see: [Schematic specifier])
4906 * `options` is a table containing the following optional parameters:
4907 * `write_yslice_prob`: string value:
4908 * `none`: no `write_yslice_prob` table is inserted,
4909 * `low`: only probabilities that are not 254 or 255 are written in
4910 the `write_ylisce_prob` table,
4911 * `all`: write all probabilities to the `write_yslice_prob` table.
4912 * The default for this option is `all`.
4913 * Any invalid value will be interpreted as `all`.
4918 * `minetest.request_http_api()`:
4919 * returns `HTTPApiTable` containing http functions if the calling mod has
4920 been granted access by being listed in the `secure.http_mods` or
4921 `secure.trusted_mods` setting, otherwise returns `nil`.
4922 * The returned table contains the functions `fetch`, `fetch_async` and
4923 `fetch_async_get` described below.
4924 * Only works at init time and must be called from the mod's main scope
4925 (not from a function).
4926 * Function only exists if minetest server was built with cURL support.
4927 * **DO NOT ALLOW ANY OTHER MODS TO ACCESS THE RETURNED TABLE, STORE IT IN
4929 * `HTTPApiTable.fetch(HTTPRequest req, callback)`
4930 * Performs given request asynchronously and calls callback upon completion
4931 * callback: `function(HTTPRequestResult res)`
4932 * Use this HTTP function if you are unsure, the others are for advanced use
4933 * `HTTPApiTable.fetch_async(HTTPRequest req)`: returns handle
4934 * Performs given request asynchronously and returns handle for
4935 `HTTPApiTable.fetch_async_get`
4936 * `HTTPApiTable.fetch_async_get(handle)`: returns HTTPRequestResult
4937 * Return response data for given asynchronous HTTP request
4942 * `minetest.get_mod_storage()`:
4943 * returns reference to mod private `StorageRef`
4944 * must be called during mod load time
4949 * `minetest.get_connected_players()`: returns list of `ObjectRefs`
4950 * `minetest.is_player(obj)`: boolean, whether `obj` is a player
4951 * `minetest.player_exists(name)`: boolean, whether player exists
4952 (regardless of online status)
4953 * `minetest.hud_replace_builtin(name, hud_definition)`
4954 * Replaces definition of a builtin hud element
4955 * `name`: `"breath"` or `"health"`
4956 * `hud_definition`: definition to replace builtin definition
4957 * `minetest.send_join_message(player_name)`
4958 * This function can be overridden by mods to change the join message.
4959 * `minetest.send_leave_message(player_name, timed_out)`
4960 * This function can be overridden by mods to change the leave message.
4961 * `minetest.hash_node_position(pos)`: returns an 48-bit integer
4962 * `pos`: table {x=number, y=number, z=number},
4963 * Gives a unique hash number for a node position (16+16+16=48bit)
4964 * `minetest.get_position_from_hash(hash)`: returns a position
4965 * Inverse transform of `minetest.hash_node_position`
4966 * `minetest.get_item_group(name, group)`: returns a rating
4967 * Get rating of a group of an item. (`0` means: not in group)
4968 * `minetest.get_node_group(name, group)`: returns a rating
4969 * Deprecated: An alias for the former.
4970 * `minetest.raillike_group(name)`: returns a rating
4971 * Returns rating of the connect_to_raillike group corresponding to name
4972 * If name is not yet the name of a connect_to_raillike group, a new group
4973 id is created, with that name.
4974 * `minetest.get_content_id(name)`: returns an integer
4975 * Gets the internal content ID of `name`
4976 * `minetest.get_name_from_content_id(content_id)`: returns a string
4977 * Gets the name of the content with that content ID
4978 * `minetest.parse_json(string[, nullvalue])`: returns something
4979 * Convert a string containing JSON data into the Lua equivalent
4980 * `nullvalue`: returned in place of the JSON null; defaults to `nil`
4981 * On success returns a table, a string, a number, a boolean or `nullvalue`
4982 * On failure outputs an error message and returns `nil`
4983 * Example: `parse_json("[10, {\"a\":false}]")`, returns `{10, {a = false}}`
4984 * `minetest.write_json(data[, styled])`: returns a string or `nil` and an error
4986 * Convert a Lua table into a JSON string
4987 * styled: Outputs in a human-readable format if this is set, defaults to
4989 * Unserializable things like functions and userdata will cause an error.
4990 * **Warning**: JSON is more strict than the Lua table format.
4991 1. You can only use strings and positive integers of at least one as
4993 2. You can not mix string and integer keys.
4994 This is due to the fact that JSON has two distinct array and object
4996 * Example: `write_json({10, {a = false}})`,
4997 returns `"[10, {\"a\": false}]"`
4998 * `minetest.serialize(table)`: returns a string
4999 * Convert a table containing tables, strings, numbers, booleans and `nil`s
5000 into string form readable by `minetest.deserialize`
5001 * Example: `serialize({foo='bar'})`, returns `'return { ["foo"] = "bar" }'`
5002 * `minetest.deserialize(string)`: returns a table
5003 * Convert a string returned by `minetest.deserialize` into a table
5004 * `string` is loaded in an empty sandbox environment.
5005 * Will load functions, but they cannot access the global environment.
5006 * Example: `deserialize('return { ["foo"] = "bar" }')`,
5007 returns `{foo='bar'}`
5008 * Example: `deserialize('print("foo")')`, returns `nil`
5009 (function call fails), returns
5010 `error:[string "print("foo")"]:1: attempt to call global 'print' (a nil value)`
5011 * `minetest.compress(data, method, ...)`: returns `compressed_data`
5012 * Compress a string of data.
5013 * `method` is a string identifying the compression method to be used.
5014 * Supported compression methods:
5015 * Deflate (zlib): `"deflate"`
5016 * `...` indicates method-specific arguments. Currently defined arguments
5018 * Deflate: `level` - Compression level, `0`-`9` or `nil`.
5019 * `minetest.decompress(compressed_data, method, ...)`: returns data
5020 * Decompress a string of data (using ZLib).
5021 * See documentation on `minetest.compress()` for supported compression
5023 * `...` indicates method-specific arguments. Currently, no methods use this
5024 * `minetest.rgba(red, green, blue[, alpha])`: returns a string
5025 * Each argument is a 8 Bit unsigned integer
5026 * Returns the ColorString from rgb or rgba values
5027 * Example: `minetest.rgba(10, 20, 30, 40)`, returns `"#0A141E28"`
5028 * `minetest.encode_base64(string)`: returns string encoded in base64
5029 * Encodes a string in base64.
5030 * `minetest.decode_base64(string)`: returns string
5031 * Decodes a string encoded in base64.
5032 * `minetest.is_protected(pos, name)`: returns boolean
5033 * Returning `true` restricts the player `name` from modifying (i.e. digging,
5034 placing) the node at position `pos`.
5035 * `name` will be `""` for non-players or unknown players.
5036 * This function should be overridden by protection mods. It is highly
5037 recommended to grant access to players with the `protection_bypass` privilege.
5038 * Cache and call the old version of this function if the position is
5039 not protected by the mod. This will allow using multiple protection mods.
5042 local old_is_protected = minetest.is_protected
5043 function minetest.is_protected(pos, name)
5044 if mymod:position_protected_from(pos, name) then
5047 return old_is_protected(pos, name)
5049 * `minetest.record_protection_violation(pos, name)`
5050 * This function calls functions registered with
5051 `minetest.register_on_protection_violation`.
5052 * `minetest.is_area_protected(pos1, pos2, player_name, interval)`
5053 * Returns the position of the first node that `player_name` may not modify
5054 in the specified cuboid between `pos1` and `pos2`.
5055 * Returns `false` if no protections were found.
5056 * Applies `is_protected()` to a 3D lattice of points in the defined volume.
5057 The points are spaced evenly throughout the volume and have a spacing
5058 similar to, but no larger than, `interval`.
5059 * All corners and edges of the defined volume are checked.
5060 * `interval` defaults to 4.
5061 * `interval` should be carefully chosen and maximised to avoid an excessive
5062 number of points being checked.
5063 * Like `minetest.is_protected`, this function may be extended or
5064 overwritten by mods to provide a faster implementation to check the
5065 cuboid for intersections.
5066 * `minetest.rotate_and_place(itemstack, placer, pointed_thing[, infinitestacks,
5067 orient_flags, prevent_after_place])`
5068 * Attempt to predict the desired orientation of the facedir-capable node
5069 defined by `itemstack`, and place it accordingly (on-wall, on the floor,
5070 or hanging from the ceiling).
5071 * `infinitestacks`: if `true`, the itemstack is not changed. Otherwise the
5072 stacks are handled normally.
5073 * `orient_flags`: Optional table containing extra tweaks to the placement code:
5074 * `invert_wall`: if `true`, place wall-orientation on the ground and
5075 ground-orientation on the wall.
5076 * `force_wall` : if `true`, always place the node in wall orientation.
5077 * `force_ceiling`: if `true`, always place on the ceiling.
5078 * `force_floor`: if `true`, always place the node on the floor.
5079 * `force_facedir`: if `true`, forcefully reset the facedir to north
5080 when placing on the floor or ceiling.
5081 * The first four options are mutually-exclusive; the last in the list
5082 takes precedence over the first.
5083 * `prevent_after_place` is directly passed to `minetest.item_place_node`
5084 * Returns the new itemstack after placement
5085 * `minetest.rotate_node(itemstack, placer, pointed_thing)`
5086 * calls `rotate_and_place()` with `infinitestacks` set according to the state
5087 of the creative mode setting, checks for "sneak" to set the `invert_wall`
5088 parameter and `prevent_after_place` set to `true`.
5090 * `minetest.calculate_knockback(player, hitter, time_from_last_punch,
5091 tool_capabilities, dir, distance, damage)`
5092 * Returns the amount of knockback applied on the punched player.
5093 * Arguments are equivalent to `register_on_punchplayer`, except the following:
5094 * `distance`: distance between puncher and punched player
5095 * This function can be overriden by mods that wish to modify this behaviour.
5096 * You may want to cache and call the old function to allow multiple mods to
5097 change knockback behaviour.
5099 * `minetest.forceload_block(pos[, transient])`
5100 * forceloads the position `pos`.
5101 * returns `true` if area could be forceloaded
5102 * If `transient` is `false` or absent, the forceload will be persistent
5103 (saved between server runs). If `true`, the forceload will be transient
5104 (not saved between server runs).
5106 * `minetest.forceload_free_block(pos[, transient])`
5107 * stops forceloading the position `pos`
5108 * If `transient` is `false` or absent, frees a persistent forceload.
5109 If `true`, frees a transient forceload.
5111 * `minetest.request_insecure_environment()`: returns an environment containing
5112 insecure functions if the calling mod has been listed as trusted in the
5113 `secure.trusted_mods` setting or security is disabled, otherwise returns
5115 * Only works at init time and must be called from the mod's main scope (not
5117 * **DO NOT ALLOW ANY OTHER MODS TO ACCESS THE RETURNED ENVIRONMENT, STORE
5118 IT IN A LOCAL VARIABLE!**
5120 * `minetest.global_exists(name)`
5121 * Checks if a global variable has been set, without triggering a warning.
5126 * `minetest.env`: `EnvRef` of the server environment and world.
5127 * Any function in the minetest namespace can be called using the syntax
5128 `minetest.env:somefunction(somearguments)`
5129 instead of `minetest.somefunction(somearguments)`
5130 * Deprecated, but support is not to be dropped soon
5135 ### Registered definition tables
5137 * `minetest.registered_items`
5138 * Map of registered items, indexed by name
5139 * `minetest.registered_nodes`
5140 * Map of registered node definitions, indexed by name
5141 * `minetest.registered_craftitems`
5142 * Map of registered craft item definitions, indexed by name
5143 * `minetest.registered_tools`
5144 * Map of registered tool definitions, indexed by name
5145 * `minetest.registered_entities`
5146 * Map of registered entity prototypes, indexed by name
5147 * `minetest.object_refs`
5148 * Map of object references, indexed by active object id
5149 * `minetest.luaentities`
5150 * Map of Lua entities, indexed by active object id
5151 * `minetest.registered_abms`
5152 * List of ABM definitions
5153 * `minetest.registered_lbms`
5154 * List of LBM definitions
5155 * `minetest.registered_aliases`
5156 * Map of registered aliases, indexed by name
5157 * `minetest.registered_ores`
5158 * Map of registered ore definitions, indexed by the `name` field.
5159 * If `name` is nil, the key is the object handle returned by
5160 `minetest.register_ore`.
5161 * `minetest.registered_biomes`
5162 * Map of registered biome definitions, indexed by the `name` field.
5163 * If `name` is nil, the key is the object handle returned by
5164 `minetest.register_biome`.
5165 * `minetest.registered_decorations`
5166 * Map of registered decoration definitions, indexed by the `name` field.
5167 * If `name` is nil, the key is the object handle returned by
5168 `minetest.register_decoration`.
5169 * `minetest.registered_schematics`
5170 * Map of registered schematic definitions, indexed by the `name` field.
5171 * If `name` is nil, the key is the object handle returned by
5172 `minetest.register_schematic`.
5173 * `minetest.registered_chatcommands`
5174 * Map of registered chat command definitions, indexed by name
5175 * `minetest.registered_privileges`
5176 * Map of registered privilege definitions, indexed by name
5178 ### Registered callback tables
5180 All callbacks registered with [Global callback registration functions] are added
5181 to corresponding `minetest.registered_*` tables.
5189 Sorted alphabetically.
5194 A fast access data structure to store areas, and find areas near a given
5196 Every area has a `data` string attribute to store additional information.
5197 You can create an empty `AreaStore` by calling `AreaStore()`, or
5198 `AreaStore(type_name)`. The mod decides where to save and load AreaStore.
5199 If you chose the parameter-less constructor, a fast implementation will be
5200 automatically chosen for you.
5204 * `get_area(id, include_borders, include_data)`
5205 * Returns the area information about the specified ID.
5206 * Returned values are either of these:
5208 nil -- Area not found
5209 true -- Without `include_borders` and `include_data`
5211 min = pos, max = pos -- `include_borders == true`
5212 data = string -- `include_data == true`
5215 * `get_areas_for_pos(pos, include_borders, include_data)`
5216 * Returns all areas as table, indexed by the area ID.
5217 * Table values: see `get_area`.
5218 * `get_areas_in_area(edge1, edge2, accept_overlap, include_borders, include_data)`
5219 * Returns all areas that contain all nodes inside the area specified by `edge1`
5220 and `edge2` (inclusive).
5221 * `accept_overlap`: if `true`, areas are returned that have nodes in
5222 common (intersect) with the specified area.
5223 * Returns the same values as `get_areas_for_pos`.
5224 * `insert_area(edge1, edge2, data, [id])`: inserts an area into the store.
5225 * Returns the new area's ID, or nil if the insertion failed.
5226 * The (inclusive) positions `edge1` and `edge2` describe the area.
5227 * `data` is a string stored with the area.
5228 * `id` (optional): will be used as the internal area ID if it is an unique
5229 number between 0 and 2^32-2.
5230 * `reserve(count)`: reserves resources for at most `count` many contained
5232 Only needed for efficiency, and only some implementations profit.
5233 * `remove_area(id)`: removes the area with the given id from the store, returns
5235 * `set_cache_params(params)`: sets params for the included prefiltering cache.
5236 Calling invalidates the cache, so that its elements have to be newly
5238 * `params` is a table with the following fields:
5240 enabled = boolean, -- Whether to enable, default true
5241 block_radius = int, -- The radius (in nodes) of the areas the cache
5242 -- generates prefiltered lists for, minimum 16,
5244 limit = int, -- The cache size, minimum 20, default 1000
5245 * `to_string()`: Experimental. Returns area store serialized as a (binary)
5247 * `to_file(filename)`: Experimental. Like `to_string()`, but writes the data to
5249 * `from_string(str)`: Experimental. Deserializes string and loads it into the
5251 Returns success and, optionally, an error message.
5252 * `from_file(filename)`: Experimental. Like `from_string()`, but reads the data
5258 An `InvRef` is a reference to an inventory.
5262 * `is_empty(listname)`: return `true` if list is empty
5263 * `get_size(listname)`: get size of a list
5264 * `set_size(listname, size)`: set size of a list
5265 * returns `false` on error (e.g. invalid `listname` or `size`)
5266 * `get_width(listname)`: get width of a list
5267 * `set_width(listname, width)`: set width of list; currently used for crafting
5268 * `get_stack(listname, i)`: get a copy of stack index `i` in list
5269 * `set_stack(listname, i, stack)`: copy `stack` to index `i` in list
5270 * `get_list(listname)`: return full list
5271 * `set_list(listname, list)`: set full list (size will not change)
5272 * `get_lists()`: returns list of inventory lists
5273 * `set_lists(lists)`: sets inventory lists (size will not change)
5274 * `add_item(listname, stack)`: add item somewhere in list, returns leftover
5276 * `room_for_item(listname, stack):` returns `true` if the stack of items
5277 can be fully added to the list
5278 * `contains_item(listname, stack, [match_meta])`: returns `true` if
5279 the stack of items can be fully taken from the list.
5280 If `match_meta` is false, only the items' names are compared
5282 * `remove_item(listname, stack)`: take as many items as specified from the
5283 list, returns the items that were actually removed (as an `ItemStack`)
5284 -- note that any item metadata is ignored, so attempting to remove a specific
5285 unique item this way will likely remove the wrong one -- to do that use
5286 `set_stack` with an empty `ItemStack`.
5287 * `get_location()`: returns a location compatible to
5288 `minetest.get_inventory(location)`.
5289 * returns `{type="undefined"}` in case location is not known
5294 An `ItemStack` is a stack of items.
5296 It can be created via `ItemStack(x)`, where x is an `ItemStack`,
5297 an itemstring, a table or `nil`.
5301 * `is_empty()`: returns `true` if stack is empty.
5302 * `get_name()`: returns item name (e.g. `"default:stone"`).
5303 * `set_name(item_name)`: returns a boolean indicating whether the item was
5305 * `get_count()`: Returns number of items on the stack.
5306 * `set_count(count)`: returns a boolean indicating whether the item was cleared
5307 * `count`: number, unsigned 16 bit integer
5308 * `get_wear()`: returns tool wear (`0`-`65535`), `0` for non-tools.
5309 * `set_wear(wear)`: returns boolean indicating whether item was cleared
5310 * `wear`: number, unsigned 16 bit integer
5311 * `get_meta()`: returns ItemStackMetaRef. See section for more details
5312 * `get_metadata()`: (DEPRECATED) Returns metadata (a string attached to an item
5314 * `set_metadata(metadata)`: (DEPRECATED) Returns true.
5315 * `get_description()`: returns the description shown in inventory list tooltips.
5316 * `clear()`: removes all items from the stack, making it empty.
5317 * `replace(item)`: replace the contents of this stack.
5318 * `item` can also be an itemstring or table.
5319 * `to_string()`: returns the stack in itemstring form.
5320 * `to_table()`: returns the stack in Lua table form.
5321 * `get_stack_max()`: returns the maximum size of the stack (depends on the
5323 * `get_free_space()`: returns `get_stack_max() - get_count()`.
5324 * `is_known()`: returns `true` if the item name refers to a defined item type.
5325 * `get_definition()`: returns the item definition table.
5326 * `get_tool_capabilities()`: returns the digging properties of the item,
5327 or those of the hand if none are defined for this item type
5328 * `add_wear(amount)`
5329 * Increases wear by `amount` if the item is a tool
5330 * `amount`: number, integer
5331 * `add_item(item)`: returns leftover `ItemStack`
5332 * Put some item or stack onto this stack
5333 * `item_fits(item)`: returns `true` if item or stack can be fully added to
5335 * `take_item(n)`: returns taken `ItemStack`
5336 * Take (and remove) up to `n` items from this stack
5337 * `n`: number, default: `1`
5338 * `peek_item(n)`: returns taken `ItemStack`
5339 * Copy (don't remove) up to `n` items from this stack
5340 * `n`: number, default: `1`
5345 ItemStack metadata: reference extra data and functionality stored in a stack.
5346 Can be obtained via `item:get_meta()`.
5350 * All methods in MetaDataRef
5351 * `set_tool_capabilities([tool_capabilities])`
5352 * Overrides the item's tool capabilities
5353 * A nil value will clear the override data and restore the original
5359 Base class used by [`StorageRef`], [`NodeMetaRef`], [`ItemStackMetaRef`],
5360 and [`PlayerMetaRef`].
5364 * `contains(key)`: Returns true if key present, otherwise false.
5365 * Returns `nil` when the MetaData is inexistent.
5366 * `get(key)`: Returns `nil` if key not present, else the stored string.
5367 * `set_string(key, value)`: Value of `""` will delete the key.
5368 * `get_string(key)`: Returns `""` if key not present.
5369 * `set_int(key, value)`
5370 * `get_int(key)`: Returns `0` if key not present.
5371 * `set_float(key, value)`
5372 * `get_float(key)`: Returns `0` if key not present.
5373 * `to_table()`: returns `nil` or a table with keys:
5374 * `fields`: key-value storage
5375 * `inventory`: `{list1 = {}, ...}}` (NodeMetaRef only)
5376 * `from_table(nil or {})`
5377 * Any non-table value will clear the metadata
5378 * See [Node Metadata] for an example
5379 * returns `true` on success
5381 * returns `true` if this metadata has the same key-value pairs as `other`
5386 An interface to use mod channels on client and server
5390 * `leave()`: leave the mod channel.
5391 * Server leaves channel `channel_name`.
5392 * No more incoming or outgoing messages can be sent to this channel from
5394 * This invalidate all future object usage.
5395 * Ensure you set mod_channel to nil after that to free Lua resources.
5396 * `is_writeable()`: returns true if channel is writeable and mod can send over
5398 * `send_all(message)`: Send `message` though the mod channel.
5399 * If mod channel is not writeable or invalid, message will be dropped.
5400 * Message size is limited to 65535 characters by protocol.
5405 Node metadata: reference extra data and functionality stored in a node.
5406 Can be obtained via `minetest.get_meta(pos)`.
5410 * All methods in MetaDataRef
5411 * `get_inventory()`: returns `InvRef`
5412 * `mark_as_private(name or {name1, name2, ...})`: Mark specific vars as private
5413 This will prevent them from being sent to the client. Note that the "private"
5414 status will only be remembered if an associated key-value pair exists,
5415 meaning it's best to call this when initializing all other meta (e.g.
5421 Node Timers: a high resolution persistent per-node timer.
5422 Can be gotten via `minetest.get_node_timer(pos)`.
5426 * `set(timeout,elapsed)`
5427 * set a timer's state
5428 * `timeout` is in seconds, and supports fractional values (0.1 etc)
5429 * `elapsed` is in seconds, and supports fractional values (0.1 etc)
5430 * will trigger the node's `on_timer` function after `(timeout - elapsed)`
5434 * equivalent to `set(timeout,0)`
5437 * `get_timeout()`: returns current timeout in seconds
5438 * if `timeout` equals `0`, timer is inactive
5439 * `get_elapsed()`: returns current elapsed time in seconds
5440 * the node's `on_timer` function will be called after `(timeout - elapsed)`
5442 * `is_started()`: returns boolean state of timer
5443 * returns `true` if timer is started, otherwise `false`
5448 Moving things in the game are generally these.
5450 This is basically a reference to a C++ `ServerActiveObject`
5454 * `get_pos()`: returns `{x=num, y=num, z=num}`
5455 * `set_pos(pos)`: `pos`=`{x=num, y=num, z=num}`
5456 * `move_to(pos, continuous=false)`
5457 * Does an interpolated move for Lua entities for visually smooth transitions.
5458 * If `continuous` is true, the Lua entity will not be moved to the current
5459 position before starting the interpolated move.
5460 * For players this does the same as `set_pos`,`continuous` is ignored.
5461 * `punch(puncher, time_from_last_punch, tool_capabilities, direction)`
5462 * `puncher` = another `ObjectRef`,
5463 * `time_from_last_punch` = time since last punch action of the puncher
5464 * `direction`: can be `nil`
5465 * `right_click(clicker)`; `clicker` is another `ObjectRef`
5466 * `get_hp()`: returns number of hitpoints (2 * number of hearts)
5467 * `set_hp(hp, reason)`: set number of hitpoints (2 * number of hearts).
5468 * See reason in register_on_player_hpchange
5469 * `get_inventory()`: returns an `InvRef` for players, otherwise returns `nil`
5470 * `get_wield_list()`: returns the name of the inventory list the wielded item
5472 * `get_wield_index()`: returns the index of the wielded item
5473 * `get_wielded_item()`: returns an `ItemStack`
5474 * `set_wielded_item(item)`: replaces the wielded item, returns `true` if
5476 * `set_armor_groups({group1=rating, group2=rating, ...})`
5477 * `get_armor_groups()`: returns a table with the armor group ratings
5478 * `set_animation(frame_range, frame_speed, frame_blend, frame_loop)`
5479 * `frame_range`: table {x=num, y=num}, default: `{x=1, y=1}`
5480 * `frame_speed`: number, default: `15.0`
5481 * `frame_blend`: number, default: `0.0`
5482 * `frame_loop`: boolean, default: `true`
5483 * `get_animation()`: returns `range`, `frame_speed`, `frame_blend` and
5485 * `set_animation_frame_speed(frame_speed)`
5486 * `frame_speed`: number, default: `15.0`
5487 * `set_attach(parent, bone, position, rotation)`
5489 * `position`: `{x=num, y=num, z=num}` (relative)
5490 * `rotation`: `{x=num, y=num, z=num}` = Rotation on each axis, in degrees
5491 * `get_attach()`: returns parent, bone, position, rotation or nil if it isn't
5494 * `set_bone_position(bone, position, rotation)`
5496 * `position`: `{x=num, y=num, z=num}` (relative)
5497 * `rotation`: `{x=num, y=num, z=num}`
5498 * `get_bone_position(bone)`: returns position and rotation of the bone
5499 * `set_properties(object property table)`
5500 * `get_properties()`: returns object property table
5501 * `is_player()`: returns true for players, false otherwise
5502 * `get_nametag_attributes()`
5503 * returns a table with the attributes of the nametag of an object
5505 color = {a=0..255, r=0..255, g=0..255, b=0..255},
5508 * `set_nametag_attributes(attributes)`
5509 * sets the attributes of the nametag of an object
5513 text = "My Nametag",
5516 #### Lua entity only (no-op for other objects)
5518 * `remove()`: remove object (after returning from Lua)
5519 * `set_velocity(vel)`
5520 * `vel` is a vector, e.g. `{x=0.0, y=2.3, z=1.0}`
5521 * `add_velocity(vel)`
5522 * `vel` is a vector, e.g. `{x=0.0, y=2.3, z=1.0}`
5523 * In comparison to using get_velocity, adding the velocity and then using
5524 set_velocity, add_velocity is supposed to avoid synchronization problems.
5525 * `get_velocity()`: returns the velocity, a vector
5526 * `set_acceleration(acc)`
5528 * `get_acceleration()`: returns the acceleration, a vector
5529 * `set_rotation(rot)`
5530 * `rot` is a vector (radians). X is pitch (elevation), Y is yaw (heading)
5531 and Z is roll (bank).
5532 * `get_rotation()`: returns the rotation, a vector (radians)
5533 * `set_yaw(radians)`: sets the yaw (heading).
5534 * `get_yaw()`: returns number in radians
5535 * `set_texture_mod(mod)`
5536 * `get_texture_mod()` returns current texture modifier
5537 * `set_sprite(p, num_frames, framelength, select_horiz_by_yawpitch)`
5538 * Select sprite from spritesheet with optional animation and Dungeon Master
5539 style texture selection based on yaw relative to camera
5540 * `p`: {x=number, y=number}, the coordinate of the first frame
5541 (x: column, y: row), default: `{x=0, y=0}`
5542 * `num_frames`: number, default: `1`
5543 * `framelength`: number, default: `0.2`
5544 * `select_horiz_by_yawpitch`: boolean, this was once used for the Dungeon
5545 Master mob, default: `false`
5546 * `get_entity_name()` (**Deprecated**: Will be removed in a future version)
5549 #### Player only (no-op for other objects)
5551 * `get_player_name()`: returns `""` if is not a player
5552 * `get_player_velocity()`: returns `nil` if is not a player, otherwise a
5553 table {x, y, z} representing the player's instantaneous velocity in nodes/s
5554 * `add_player_velocity(vel)`
5555 * Adds to player velocity, this happens client-side and only once.
5556 * Does not apply during free_move.
5557 * Note that since the player speed is normalized at each move step,
5558 increasing e.g. Y velocity beyond what would usually be achieved
5559 (see: physics overrides) will cause existing X/Z velocity to be reduced.
5560 * Example: `add_player_velocity({x=0, y=6.5, z=0})` is equivalent to
5561 pressing the jump key (assuming default settings)
5562 * `get_look_dir()`: get camera direction as a unit vector
5563 * `get_look_vertical()`: pitch in radians
5564 * Angle ranges between -pi/2 and pi/2, which are straight up and down
5566 * `get_look_horizontal()`: yaw in radians
5567 * Angle is counter-clockwise from the +z direction.
5568 * `set_look_vertical(radians)`: sets look pitch
5569 * radians: Angle from looking forward, where positive is downwards.
5570 * `set_look_horizontal(radians)`: sets look yaw
5571 * radians: Angle from the +z direction, where positive is counter-clockwise.
5572 * `get_look_pitch()`: pitch in radians - Deprecated as broken. Use
5573 `get_look_vertical`.
5574 * Angle ranges between -pi/2 and pi/2, which are straight down and up
5576 * `get_look_yaw()`: yaw in radians - Deprecated as broken. Use
5577 `get_look_horizontal`.
5578 * Angle is counter-clockwise from the +x direction.
5579 * `set_look_pitch(radians)`: sets look pitch - Deprecated. Use
5580 `set_look_vertical`.
5581 * `set_look_yaw(radians)`: sets look yaw - Deprecated. Use
5582 `set_look_horizontal`.
5583 * `get_breath()`: returns player's breath
5584 * `set_breath(value)`: sets player's breath
5586 * `0`: player is drowning
5587 * max: bubbles bar is not shown
5588 * See [Object properties] for more information
5589 * `set_fov(fov, is_multiplier)`: Sets player's FOV
5591 * `is_multiplier`: Set to `true` if the FOV value is a multiplier.
5592 Defaults to `false`.
5593 * Set to 0 to clear FOV override.
5595 * Returns player's FOV override in degrees, and a boolean depending on whether
5596 the value is a multiplier.
5597 * Returns 0 as first value if player's FOV hasn't been overridden.
5598 * `set_attribute(attribute, value)`: DEPRECATED, use get_meta() instead
5599 * Sets an extra attribute with value on player.
5600 * `value` must be a string, or a number which will be converted to a
5602 * If `value` is `nil`, remove attribute from player.
5603 * `get_attribute(attribute)`: DEPRECATED, use get_meta() instead
5604 * Returns value (a string) for extra attribute.
5605 * Returns `nil` if no attribute found.
5606 * `get_meta()`: Returns a PlayerMetaRef.
5607 * `set_inventory_formspec(formspec)`
5608 * Redefine player's inventory form
5609 * Should usually be called in `on_joinplayer`
5610 * `get_inventory_formspec()`: returns a formspec string
5611 * `set_formspec_prepend(formspec)`:
5612 * the formspec string will be added to every formspec shown to the user,
5613 except for those with a no_prepend[] tag.
5614 * This should be used to set style elements such as background[] and
5615 bgcolor[], any non-style elements (eg: label) may result in weird behaviour.
5616 * Only affects formspecs shown after this is called.
5617 * `get_formspec_prepend(formspec)`: returns a formspec string.
5618 * `get_player_control()`: returns table with player pressed keys
5619 * The table consists of fields with boolean value representing the pressed
5620 keys, the fields are jump, right, left, LMB, RMB, sneak, aux1, down, up.
5621 * example: `{jump=false, right=true, left=false, LMB=false, RMB=false,
5622 sneak=true, aux1=false, down=false, up=false}`
5623 * `get_player_control_bits()`: returns integer with bit packed player pressed
5625 * bit nr/meaning: 0/up, 1/down, 2/left, 3/right, 4/jump, 5/aux1, 6/sneak,
5627 * `set_physics_override(override_table)`
5628 * `override_table` is a table with the following fields:
5629 * `speed`: multiplier to default walking speed value (default: `1`)
5630 * `jump`: multiplier to default jump value (default: `1`)
5631 * `gravity`: multiplier to default gravity value (default: `1`)
5632 * `sneak`: whether player can sneak (default: `true`)
5633 * `sneak_glitch`: whether player can use the new move code replications
5634 of the old sneak side-effects: sneak ladders and 2 node sneak jump
5636 * `new_move`: use new move/sneak code. When `false` the exact old code
5637 is used for the specific old sneak behaviour (default: `true`)
5638 * `get_physics_override()`: returns the table given to `set_physics_override`
5639 * `hud_add(hud definition)`: add a HUD element described by HUD def, returns ID
5641 * `hud_remove(id)`: remove the HUD element of the specified id
5642 * `hud_change(id, stat, value)`: change a value of a previously added HUD
5644 * element `stat` values:
5645 `position`, `name`, `scale`, `text`, `number`, `item`, `dir`
5646 * `hud_get(id)`: gets the HUD element definition structure of the specified ID
5647 * `hud_set_flags(flags)`: sets specified HUD flags of player.
5648 * `flags`: A table with the following fields set to boolean values
5656 * If a flag equals `nil`, the flag is not modified
5657 * `minimap`: Modifies the client's permission to view the minimap.
5658 The client may locally elect to not view the minimap.
5659 * `minimap_radar` is only usable when `minimap` is true
5660 * `hud_get_flags()`: returns a table of player HUD flags with boolean values.
5661 * See `hud_set_flags` for a list of flags that can be toggled.
5662 * `hud_set_hotbar_itemcount(count)`: sets number of items in builtin hotbar
5663 * `count`: number of items, must be between `1` and `32`
5664 * `hud_get_hotbar_itemcount`: returns number of visible items
5665 * `hud_set_hotbar_image(texturename)`
5666 * sets background image for hotbar
5667 * `hud_get_hotbar_image`: returns texturename
5668 * `hud_set_hotbar_selected_image(texturename)`
5669 * sets image for selected item of hotbar
5670 * `hud_get_hotbar_selected_image`: returns texturename
5671 * `set_sky(bgcolor, type, {texture names}, clouds)`
5672 * `bgcolor`: ColorSpec, defaults to white
5673 * `type`: Available types:
5674 * `"regular"`: Uses 0 textures, `bgcolor` ignored
5675 * `"skybox"`: Uses 6 textures, `bgcolor` used
5676 * `"plain"`: Uses 0 textures, `bgcolor` used
5677 * `clouds`: Boolean for whether clouds appear in front of `"skybox"` or
5678 `"plain"` custom skyboxes (default: `true`)
5679 * `get_sky()`: returns bgcolor, type, table of textures, clouds
5680 * `set_clouds(parameters)`: set cloud parameters
5681 * `parameters` is a table with the following optional fields:
5682 * `density`: from `0` (no clouds) to `1` (full clouds) (default `0.4`)
5683 * `color`: basic cloud color with alpha channel, ColorSpec
5684 (default `#fff0f0e5`).
5685 * `ambient`: cloud color lower bound, use for a "glow at night" effect.
5686 ColorSpec (alpha ignored, default `#000000`)
5687 * `height`: cloud height, i.e. y of cloud base (default per conf,
5689 * `thickness`: cloud thickness in nodes (default `16`)
5690 * `speed`: 2D cloud speed + direction in nodes per second
5691 (default `{x=0, z=-2}`).
5692 * `get_clouds()`: returns a table with the current cloud parameters as in
5694 * `override_day_night_ratio(ratio or nil)`
5695 * `0`...`1`: Overrides day-night ratio, controlling sunlight to a specific
5697 * `nil`: Disables override, defaulting to sunlight based on day-night cycle
5698 * `get_day_night_ratio()`: returns the ratio or nil if it isn't overridden
5699 * `set_local_animation(stand/idle, walk, dig, walk+dig, frame_speed=frame_speed)`:
5700 set animation for player model in third person view
5702 set_local_animation({x=0, y=79}, -- stand/idle animation key frames
5703 {x=168, y=187}, -- walk animation key frames
5704 {x=189, y=198}, -- dig animation key frames
5705 {x=200, y=219}, -- walk+dig animation key frames
5706 frame_speed=30) -- animation frame speed
5707 * `get_local_animation()`: returns stand, walk, dig, dig+walk tables and
5709 * `set_eye_offset({x=0,y=0,z=0},{x=0,y=0,z=0})`: defines offset value for
5711 * in first person view
5712 * in third person view (max. values `{x=-10/10,y=-10,15,z=-5/5}`)
5713 * `get_eye_offset()`: returns `offset_first` and `offset_third`
5714 * `send_mapblock(blockpos)`:
5715 * Sends a server-side loaded mapblock to the player.
5716 * Returns `false` if failed.
5717 * Resource intensive - use sparsely
5718 * To get blockpos, integer divide pos by 16
5723 A 32-bit pseudorandom number generator.
5724 Uses PCG32, an algorithm of the permuted congruential generator family,
5725 offering very strong randomness.
5727 It can be created via `PcgRandom(seed)` or `PcgRandom(seed, sequence)`.
5731 * `next()`: return next integer random number [`-2147483648`...`2147483647`]
5732 * `next(min, max)`: return next integer random number [`min`...`max`]
5733 * `rand_normal_dist(min, max, num_trials=6)`: return normally distributed
5734 random number [`min`...`max`].
5735 * This is only a rough approximation of a normal distribution with:
5736 * `mean = (max - min) / 2`, and
5737 * `variance = (((max - min + 1) ^ 2) - 1) / (12 * num_trials)`
5738 * Increasing `num_trials` improves accuracy of the approximation
5743 A perlin noise generator.
5744 It can be created via `PerlinNoise(seed, octaves, persistence, spread)`
5745 or `PerlinNoise(noiseparams)`.
5746 Alternatively with `minetest.get_perlin(seeddiff, octaves, persistence, spread)`
5747 or `minetest.get_perlin(noiseparams)`.
5751 * `get_2d(pos)`: returns 2D noise value at `pos={x=,y=}`
5752 * `get_3d(pos)`: returns 3D noise value at `pos={x=,y=,z=}`
5757 A fast, bulk perlin noise generator.
5759 It can be created via `PerlinNoiseMap(noiseparams, size)` or
5760 `minetest.get_perlin_map(noiseparams, size)`.
5762 Format of `size` is `{x=dimx, y=dimy, z=dimz}`. The `z` component is omitted
5763 for 2D noise, and it must be must be larger than 1 for 3D noise (otherwise
5766 For each of the functions with an optional `buffer` parameter: If `buffer` is
5767 not nil, this table will be used to store the result instead of creating a new
5772 * `get_2d_map(pos)`: returns a `<size.x>` times `<size.y>` 2D array of 2D noise
5773 with values starting at `pos={x=,y=}`
5774 * `get_3d_map(pos)`: returns a `<size.x>` times `<size.y>` times `<size.z>`
5775 3D array of 3D noise with values starting at `pos={x=,y=,z=}`.
5776 * `get_2d_map_flat(pos, buffer)`: returns a flat `<size.x * size.y>` element
5777 array of 2D noise with values starting at `pos={x=,y=}`
5778 * `get_3d_map_flat(pos, buffer)`: Same as `get2dMap_flat`, but 3D noise
5779 * `calc_2d_map(pos)`: Calculates the 2d noise map starting at `pos`. The result
5780 is stored internally.
5781 * `calc_3d_map(pos)`: Calculates the 3d noise map starting at `pos`. The result
5782 is stored internally.
5783 * `get_map_slice(slice_offset, slice_size, buffer)`: In the form of an array,
5784 returns a slice of the most recently computed noise results. The result slice
5785 begins at coordinates `slice_offset` and takes a chunk of `slice_size`.
5786 E.g. to grab a 2-slice high horizontal 2d plane of noise starting at buffer
5788 `noisevals = noise:get_map_slice({y=20}, {y=2})`
5789 It is important to note that `slice_offset` offset coordinates begin at 1,
5790 and are relative to the starting position of the most recently calculated
5792 To grab a single vertical column of noise starting at map coordinates
5793 x = 1023, y=1000, z = 1000:
5794 `noise:calc_3d_map({x=1000, y=1000, z=1000})`
5795 `noisevals = noise:get_map_slice({x=24, z=1}, {x=1, z=1})`
5801 Uses the same method of storage as the deprecated player attribute API, so
5802 data there will also be in player meta.
5803 Can be obtained using `player:get_meta()`.
5807 * All methods in MetaDataRef
5812 A 16-bit pseudorandom number generator.
5813 Uses a well-known LCG algorithm introduced by K&R.
5815 It can be created via `PseudoRandom(seed)`.
5819 * `next()`: return next integer random number [`0`...`32767`]
5820 * `next(min, max)`: return next integer random number [`min`...`max`]
5821 * `((max - min) == 32767) or ((max-min) <= 6553))` must be true
5822 due to the simple implementation making bad distribution otherwise.
5827 A raycast on the map. It works with selection boxes.
5828 Can be used as an iterator in a for loop as:
5830 local ray = Raycast(...)
5831 for pointed_thing in ray do
5835 The map is loaded as the ray advances. If the map is modified after the
5836 `Raycast` is created, the changes may or may not have an effect on the object.
5838 It can be created via `Raycast(pos1, pos2, objects, liquids)` or
5839 `minetest.raycast(pos1, pos2, objects, liquids)` where:
5841 * `pos1`: start of the ray
5842 * `pos2`: end of the ray
5843 * `objects`: if false, only nodes will be returned. Default is true.
5844 * `liquids`: if false, liquid nodes won't be returned. Default is false.
5848 * `next()`: returns a `pointed_thing` with exact pointing location
5849 * Returns the next thing pointed by the ray or nil.
5854 Interface for the operating system's crypto-secure PRNG.
5856 It can be created via `SecureRandom()`. The constructor returns nil if a
5857 secure random device cannot be found on the system.
5861 * `next_bytes([count])`: return next `count` (default 1, capped at 2048) many
5862 random bytes, as a string.
5867 An interface to read config files in the format of `minetest.conf`.
5869 It can be created via `Settings(filename)`.
5873 * `get(key)`: returns a value
5874 * `get_bool(key, [default])`: returns a boolean
5875 * `default` is the value returned if `key` is not found.
5876 * Returns `nil` if `key` is not found and `default` not specified.
5877 * `get_np_group(key)`: returns a NoiseParams table
5879 * Setting names can't contain whitespace or any of `="{}#`.
5880 * Setting values can't contain the sequence `\n"""`.
5881 * Setting names starting with "secure." can't be set on the main settings
5882 object (`minetest.settings`).
5883 * `set_bool(key, value)`
5884 * See documentation for set() above.
5885 * `set_np_group(key, value)`
5886 * `value` is a NoiseParams table.
5887 * Also, see documentation for set() above.
5888 * `remove(key)`: returns a boolean (`true` for success)
5889 * `get_names()`: returns `{key1,...}`
5890 * `write()`: returns a boolean (`true` for success)
5891 * Writes changes to file.
5892 * `to_table()`: returns `{[key1]=value1,...}`
5896 The settings have the format `key = value`. Example:
5908 Mod metadata: per mod metadata, saved automatically.
5909 Can be obtained via `minetest.get_mod_storage()` during load time.
5911 WARNING: This storage backend is incaptable to save raw binary data due
5912 to restrictions of JSON.
5916 * All methods in MetaDataRef
5927 Used by `ObjectRef` methods. Part of an Entity definition.
5928 These properties are not persistent, but are applied automatically to the
5929 corresponding Lua entity using the given registration fields.
5930 Player properties need to be saved manually.
5934 -- For players only. Defaults to `minetest.PLAYER_MAX_HP_DEFAULT`.
5937 -- For players only. Defaults to `minetest.PLAYER_MAX_BREATH_DEFAULT`.
5940 -- For players only. Zoom FOV in degrees.
5941 -- Note that zoom loads and/or generates world beyond the server's
5942 -- maximum send and generate distances, so acts like a telescope.
5943 -- Smaller zoom_fov values increase the distance loaded/generated.
5944 -- Defaults to 15 in creative mode, 0 in survival mode.
5945 -- zoom_fov = 0 disables zooming for the player.
5948 -- For players only. Camera height above feet position in nodes.
5949 -- Defaults to 1.625.
5953 collide_with_objects = true,
5954 -- Collide with other objects if physical = true
5958 collisionbox = {-0.5, 0.0, -0.5, 0.5, 1.0, 0.5}, -- Default
5959 selectionbox = {-0.5, 0.0, -0.5, 0.5, 1.0, 0.5},
5960 -- Selection box uses collision box dimensions when not set.
5961 -- For both boxes: {xmin, ymin, zmin, xmax, ymax, zmax} in nodes from
5965 -- Overrides selection box when false
5967 visual = "cube" / "sprite" / "upright_sprite" / "mesh" / "wielditem" / "item",
5968 -- "cube" is a node-sized cube.
5969 -- "sprite" is a flat texture always facing the player.
5970 -- "upright_sprite" is a vertical flat texture.
5971 -- "mesh" uses the defined mesh model.
5972 -- "wielditem" is used for dropped items.
5973 -- (see builtin/game/item_entity.lua).
5974 -- For this use 'wield_item = itemname' (Deprecated: 'textures = {itemname}').
5975 -- If the item has a 'wield_image' the object will be an extrusion of
5977 -- If 'itemname' is a cubic node or nodebox the object will appear
5978 -- identical to 'itemname'.
5979 -- If 'itemname' is a plantlike node the object will be an extrusion
5981 -- Otherwise for non-node items, the object will be an extrusion of
5982 -- 'inventory_image'.
5983 -- If 'itemname' contains a ColorString or palette index (e.g. from
5984 -- `minetest.itemstring_with_palette()`), the entity will inherit the color.
5985 -- "item" is similar to "wielditem" but ignores the 'wield_image' parameter.
5987 visual_size = {x = 1, y = 1, z = 1},
5988 -- Multipliers for the visual size. If `z` is not specified, `x` will be used
5989 -- to scale the entity along both horizontal axes.
5994 -- Number of required textures depends on visual.
5995 -- "cube" uses 6 textures just like a node, but all 6 must be defined.
5996 -- "sprite" uses 1 texture.
5997 -- "upright_sprite" uses 2 textures: {front, back}.
5998 -- "wielditem" expects 'textures = {itemname}' (see 'visual' above).
6001 -- Number of required colors depends on visual
6003 use_texture_alpha = false,
6004 -- Use texture's alpha channel.
6005 -- Excludes "upright_sprite" and "wielditem".
6006 -- Note: currently causes visual issues when viewed through other
6007 -- semi-transparent materials such as water.
6009 spritediv = {x = 1, y = 1},
6010 -- Used with spritesheet textures for animation and/or frame selection
6011 -- according to position relative to player.
6012 -- Defines the number of columns and rows in the spritesheet:
6015 initial_sprite_basepos = {x = 0, y = 0},
6016 -- Used with spritesheet textures.
6017 -- Defines the {column, row} position of the initially used frame in the
6022 makes_footstep_sound = false,
6024 automatic_rotate = 0,
6025 -- Set constant rotation in radians per second, positive or negative.
6026 -- Set to 0 to disable constant rotation.
6030 automatic_face_movement_dir = 0.0,
6031 -- Automatically set yaw to movement direction, offset in degrees.
6032 -- 'false' to disable.
6034 automatic_face_movement_max_rotation_per_sec = -1,
6035 -- Limit automatic rotation to this value in degrees per second.
6036 -- No limit if value <= 0.
6038 backface_culling = true,
6039 -- Set to false to disable backface_culling for model
6042 -- Add this much extra lighting when calculating texture color.
6043 -- Value < 0 disables light's effect on texture color.
6044 -- For faking self-lighting, UI style entities, or programmatic coloring
6048 -- By default empty, for players their name is shown if empty
6050 nametag_color = <ColorSpec>,
6051 -- Sets color of nametag
6054 -- By default empty, text to be shown when pointed at object
6057 -- If false, never save this object statically. It will simply be
6058 -- deleted when the block gets unloaded.
6059 -- The get_staticdata() callback is never called then.
6060 -- Defaults to 'true'.
6066 Used by `minetest.register_entity`.
6069 initial_properties = {
6071 mesh = "boats_boat.obj",
6074 -- A table of object properties, see the `Object properties` section.
6075 -- Object properties being read directly from the entity definition
6076 -- table is deprecated. Define object properties in this
6077 -- `initial_properties` table instead.
6079 on_activate = function(self, staticdata, dtime_s),
6081 on_step = function(self, dtime),
6083 on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir),
6085 on_rightclick = function(self, clicker),
6087 get_staticdata = function(self),
6088 -- Called sometimes; the string returned is passed to on_activate when
6089 -- the entity is re-activated from static state
6091 _custom_field = whatever,
6092 -- You can define arbitrary member variables here (see Item definition
6093 -- for more info) by using a '_' prefix
6096 ABM (ActiveBlockModifier) definition
6097 ------------------------------------
6099 Used by `minetest.register_abm`.
6102 label = "Lava cooling",
6103 -- Descriptive label for profiling purposes (optional).
6104 -- Definitions with identical labels will be listed as one.
6106 nodenames = {"default:lava_source"},
6107 -- Apply `action` function to these nodes.
6108 -- `group:groupname` can also be used here.
6110 neighbors = {"default:water_source", "default:water_flowing"},
6111 -- Only apply `action` to nodes that have one of, or any
6112 -- combination of, these neighbors.
6113 -- If left out or empty, any neighbor will do.
6114 -- `group:groupname` can also be used here.
6117 -- Operation interval in seconds
6120 -- Chance of triggering `action` per-node per-interval is 1.0 / this
6124 -- If true, catch-up behaviour is enabled: The `chance` value is
6125 -- temporarily reduced when returning to an area to simulate time lost
6126 -- by the area being unattended. Note that the `chance` value can often
6129 action = function(pos, node, active_object_count, active_object_count_wider),
6130 -- Function triggered for each qualifying node.
6131 -- `active_object_count` is number of active objects in the node's
6133 -- `active_object_count_wider` is number of active objects in the node's
6134 -- mapblock plus all 26 neighboring mapblocks. If any neighboring
6135 -- mapblocks are unloaded an estmate is calculated for them based on
6136 -- loaded mapblocks.
6139 LBM (LoadingBlockModifier) definition
6140 -------------------------------------
6142 Used by `minetest.register_lbm`.
6144 A loading block modifier (LBM) is used to define a function that is called for
6145 specific nodes (defined by `nodenames`) when a mapblock which contains such nodes
6149 label = "Upgrade legacy doors",
6150 -- Descriptive label for profiling purposes (optional).
6151 -- Definitions with identical labels will be listed as one.
6153 name = "modname:replace_legacy_door",
6155 nodenames = {"default:lava_source"},
6156 -- List of node names to trigger the LBM on.
6157 -- Also non-registered nodes will work.
6158 -- Groups (as of group:groupname) will work as well.
6160 run_at_every_load = false,
6161 -- Whether to run the LBM's action every time a block gets loaded,
6162 -- and not only the first time the block gets loaded after the LBM
6165 action = function(pos, node),
6172 * `{name="image.png", animation={Tile Animation definition}}`
6173 * `{name="image.png", backface_culling=bool, tileable_vertical=bool,
6174 tileable_horizontal=bool, align_style="node"/"world"/"user", scale=int}`
6175 * backface culling enabled by default for most nodes
6176 * tileable flags are info for shaders, how they should treat texture
6177 when displacement mapping is used.
6178 Directions are from the point of view of the tile texture,
6179 not the node it's on.
6180 * align style determines whether the texture will be rotated with the node
6181 or kept aligned with its surroundings. "user" means that client
6182 setting will be used, similar to `glasslike_framed_optional`.
6183 Note: supported by solid nodes and nodeboxes only.
6184 * scale is used to make texture span several (exactly `scale`) nodes,
6185 instead of just one, in each direction. Works for world-aligned
6187 Note that as the effect is applied on per-mapblock basis, `16` should
6188 be equally divisible by `scale` or you may get wrong results.
6189 * `{name="image.png", color=ColorSpec}`
6190 * the texture's color will be multiplied with this color.
6191 * the tile's color overrides the owning node's color in all cases.
6192 * deprecated, yet still supported field names:
6195 Tile animation definition
6196 -------------------------
6199 type = "vertical_frames",
6202 -- Width of a frame in pixels
6205 -- Height of a frame in pixels
6215 -- Width in number of frames
6218 -- Height in number of frames
6221 -- Length of a single frame
6227 Used by `minetest.register_node`, `minetest.register_craftitem`, and
6228 `minetest.register_tool`.
6231 description = "Steel Axe",
6234 -- key = name, value = rating; rating = 1..3.
6235 -- If rating not applicable, use 1.
6236 -- e.g. {wool = 1, fluffy = 3}
6237 -- {soil = 2, outerspace = 1, crumbly = 1}
6238 -- {bendy = 2, snappy = 1},
6239 -- {hard = 1, metal = 1, spikes = 1}
6241 inventory_image = "default_tool_steelaxe.png",
6243 inventory_overlay = "overlay.png",
6244 -- An overlay which does not get colorized
6251 -- An image file containing the palette of a node.
6252 -- You can set the currently used color as the "palette_index" field of
6253 -- the item stack metadata.
6254 -- The palette is always stretched to fit indices between 0 and 255, to
6255 -- ensure compatibility with "colorfacedir" and "colorwallmounted" nodes.
6257 color = "0xFFFFFFFF",
6258 -- The color of the item. The palette overrides this.
6260 wield_scale = {x = 1, y = 1, z = 1},
6266 liquids_pointable = false,
6268 -- See "Tools" section for an example including explanation
6269 tool_capabilities = {
6270 full_punch_interval = 1.0,
6274 choppy = {times = {[1] = 2.50, [2] = 1.40, [3] = 1.00},
6275 uses = 20, maxlevel = 2},
6277 damage_groups = {groupname = damage},
6279 punch_attack_uses = nil,
6280 -- Amount of uses this tool has for attacking players and entities
6281 -- by punching them (0 = infinite uses).
6282 -- For compatibility, this is automatically set from the first
6283 -- suitable groupcap using the forumla "uses * 3^(maxlevel - 1)".
6284 -- It is recommend to set this explicitly instead of relying on the
6285 -- fallback behavior.
6288 node_placement_prediction = nil,
6289 -- If nil and item is node, prediction is made automatically.
6290 -- If nil and item is not a node, no prediction is made.
6291 -- If "" and item is anything, no prediction is made.
6292 -- Otherwise should be name of node which the client immediately places
6293 -- on ground when the player places the item. Server will always update
6294 -- actual result to client in a short moment.
6296 node_dig_prediction = "air",
6297 -- if "", no prediction is made.
6298 -- if "air", node is removed.
6299 -- Otherwise should be name of node which the client immediately places
6300 -- upon digging. Server will always update actual result shortly.
6303 breaks = "default_tool_break", -- tools only
6304 place = <SimpleSoundSpec>,
6305 eat = <SimpleSoundSpec>,
6308 on_place = function(itemstack, placer, pointed_thing),
6309 -- Shall place item and return the leftover itemstack.
6310 -- The placer may be any ObjectRef or nil.
6311 -- default: minetest.item_place
6313 on_secondary_use = function(itemstack, user, pointed_thing),
6314 -- Same as on_place but called when pointing at nothing.
6315 -- The user may be any ObjectRef or nil.
6316 -- pointed_thing: always { type = "nothing" }
6318 on_drop = function(itemstack, dropper, pos),
6319 -- Shall drop item and return the leftover itemstack.
6320 -- The dropper may be any ObjectRef or nil.
6321 -- default: minetest.item_drop
6323 on_use = function(itemstack, user, pointed_thing),
6325 -- Function must return either nil if no item shall be removed from
6326 -- inventory, or an itemstack to replace the original itemstack.
6327 -- e.g. itemstack:take_item(); return itemstack
6328 -- Otherwise, the function is free to do what it wants.
6329 -- The user may be any ObjectRef or nil.
6330 -- The default functions handle regular use cases.
6332 after_use = function(itemstack, user, node, digparams),
6334 -- If defined, should return an itemstack and will be called instead of
6335 -- wearing out the tool. If returns nil, does nothing.
6336 -- If after_use doesn't exist, it is the same as:
6337 -- function(itemstack, user, node, digparams)
6338 -- itemstack:add_wear(digparams.wear)
6341 -- The user may be any ObjectRef or nil.
6343 _custom_field = whatever,
6344 -- Add your own custom fields. By convention, all custom field names
6345 -- should start with `_` to avoid naming collisions with future engine
6352 Used by `minetest.register_node`.
6355 -- <all fields allowed in item definitions>,
6357 drawtype = "normal", -- See "Node drawtypes"
6360 -- Supported for drawtypes "plantlike", "signlike", "torchlike",
6361 -- "firelike", "mesh".
6362 -- For plantlike and firelike, the image will start at the bottom of the
6363 -- node, for the other drawtypes the image will be centered on the node.
6364 -- Note that positioning for "torchlike" may still change.
6366 tiles = {tile definition 1, def2, def3, def4, def5, def6},
6367 -- Textures of node; +Y, -Y, +X, -X, +Z, -Z
6368 -- Old field name was 'tile_images'.
6369 -- List can be shortened to needed length.
6371 overlay_tiles = {tile definition 1, def2, def3, def4, def5, def6},
6372 -- Same as `tiles`, but these textures are drawn on top of the base
6373 -- tiles. You can use this to colorize only specific parts of your
6374 -- texture. If the texture name is an empty string, that overlay is not
6375 -- drawn. Since such tiles are drawn twice, it is not recommended to use
6376 -- overlays on very common nodes.
6378 special_tiles = {tile definition 1, Tile definition 2},
6379 -- Special textures of node; used rarely.
6380 -- Old field name was 'special_materials'.
6381 -- List can be shortened to needed length.
6384 -- The node's original color will be multiplied with this color.
6385 -- If the node has a palette, then this setting only has an effect in
6386 -- the inventory and on the wield item.
6388 use_texture_alpha = false,
6389 -- Use texture's alpha channel
6391 palette = "palette.png",
6392 -- The node's `param2` is used to select a pixel from the image.
6393 -- Pixels are arranged from left to right and from top to bottom.
6394 -- The node's color will be multiplied with the selected pixel's color.
6395 -- Tiles can override this behavior.
6396 -- Only when `paramtype2` supports palettes.
6398 post_effect_color = "green#0F",
6399 -- Screen tint if player is inside node, see "ColorSpec"
6401 paramtype = "none", -- See "Nodes"
6403 paramtype2 = "none", -- See "Nodes"
6405 place_param2 = nil, -- Force value for param2 when player places node
6407 is_ground_content = true,
6408 -- If false, the cave generator and dungeon generator will not carve
6409 -- through this node.
6410 -- Specifically, this stops mod-added nodes being removed by caves and
6411 -- dungeons when those generate in a neighbor mapchunk and extend out
6412 -- beyond the edge of that mapchunk.
6414 sunlight_propagates = false,
6415 -- If true, sunlight will go infinitely through this node
6417 walkable = true, -- If true, objects collide with node
6419 pointable = true, -- If true, can be pointed at
6421 diggable = true, -- If false, can never be dug
6423 climbable = false, -- If true, can be climbed on (ladder)
6425 buildable_to = false, -- If true, placed nodes can replace this node
6428 -- If true, liquids flow into and replace this node.
6429 -- Warning: making a liquid node 'floodable' will cause problems.
6431 liquidtype = "none", -- "none" / "source" / "flowing"
6433 liquid_alternative_flowing = "", -- Flowing version of source liquid
6435 liquid_alternative_source = "", -- Source version of flowing liquid
6437 liquid_viscosity = 0, -- Higher viscosity = slower flow (max. 7)
6439 liquid_renewable = true,
6440 -- If true, a new liquid source can be created by placing two or more
6444 -- Only valid for "nodebox" drawtype with 'type = "leveled"'.
6445 -- Allows defining the nodebox height without using param2.
6446 -- The nodebox height is 'leveled' / 64 nodes.
6447 -- The maximum value of 'leveled' is 127.
6449 liquid_range = 8, -- Number of flowing nodes around source (max. 8)
6452 -- Player will take this amount of damage if no bubbles are left
6455 -- Amount of light emitted by node.
6456 -- To set the maximum (14), use the value 'minetest.LIGHT_MAX'.
6457 -- A value outside the range 0 to minetest.LIGHT_MAX causes undefined
6460 damage_per_second = 0,
6461 -- If player is inside node, this damage is caused
6463 node_box = {type="regular"}, -- See "Node boxes"
6465 connects_to = nodenames,
6466 -- Used for nodebox nodes with the type == "connected".
6467 -- Specifies to what neighboring nodes connections will be drawn.
6468 -- e.g. `{"group:fence", "default:wood"}` or `"default:stone"`
6470 connect_sides = { "top", "bottom", "front", "left", "back", "right" },
6471 -- Tells connected nodebox nodes to connect only to these sides of this
6479 {-2 / 16, -0.5, -2 / 16, 2 / 16, 3 / 16, 2 / 16},
6482 -- Custom selection box definition. Multiple boxes can be defined.
6483 -- If "nodebox" drawtype is used and selection_box is nil, then node_box
6484 -- definition is used for the selection box.
6489 {-2 / 16, -0.5, -2 / 16, 2 / 16, 3 / 16, 2 / 16},
6492 -- Custom collision box definition. Multiple boxes can be defined.
6493 -- If "nodebox" drawtype is used and collision_box is nil, then node_box
6494 -- definition is used for the collision box.
6495 -- Both of the boxes above are defined as:
6496 -- {xmin, ymin, zmin, xmax, ymax, zmax} in nodes from node center.
6498 -- Support maps made in and before January 2012
6499 legacy_facedir_simple = false,
6500 legacy_wallmounted = false,
6503 -- Valid for drawtypes:
6504 -- mesh, nodebox, plantlike, allfaces_optional, liquid, flowingliquid.
6505 -- 1 - wave node like plants (node top moves side-to-side, bottom is fixed)
6506 -- 2 - wave node like leaves (whole node moves side-to-side)
6507 -- 3 - wave node like liquids (whole node moves up and down)
6508 -- Not all models will properly wave.
6509 -- plantlike drawtype can only wave like plants.
6510 -- allfaces_optional drawtype can only wave like leaves.
6511 -- liquid, flowingliquid drawtypes can only wave like liquids.
6514 footstep = <SimpleSoundSpec>,
6515 dig = <SimpleSoundSpec>, -- "__group" = group-based sound (default)
6516 dug = <SimpleSoundSpec>,
6517 place = <SimpleSoundSpec>,
6518 place_failed = <SimpleSoundSpec>,
6519 fall = <SimpleSoundSpec>,
6523 -- Name of dropped item when dug.
6524 -- Default dropped item is the node itself.
6525 -- Using a table allows multiple items, drop chances and tool filtering.
6526 -- Tool filtering was undocumented until recently, tool filtering by string
6527 -- matching is deprecated.
6530 -- Maximum number of item lists to drop.
6531 -- The entries in 'items' are processed in order. For each:
6532 -- Tool filtering is applied, chance of drop is applied, if both are
6533 -- successful the entire item list is dropped.
6534 -- Entry processing continues until the number of dropped item lists
6535 -- equals 'max_items'.
6536 -- Therefore, entries should progress from low to high drop chance.
6540 -- 1 in 1000 chance of dropping a diamond.
6541 -- Default rarity is '1'.
6543 items = {"default:diamond"},
6546 -- Only drop if using a tool whose name is identical to one
6548 tools = {"default:shovel_mese", "default:shovel_diamond"},
6550 items = {"default:dirt"},
6551 -- Whether all items in the dropped item list inherit the
6552 -- hardware coloring palette color from the dug node.
6553 -- Default is 'false'.
6554 inherit_color = true,
6557 -- Only drop if using a tool whose name contains
6558 -- "default:shovel_" (this tool filtering by string matching
6560 tools = {"~default:shovel_"},
6562 -- The item list dropped.
6563 items = {"default:sand", "default:desert_sand"},
6568 on_construct = function(pos),
6569 -- Node constructor; called after adding node.
6570 -- Can set up metadata and stuff like that.
6571 -- Not called for bulk node placement (i.e. schematics and VoxelManip).
6574 on_destruct = function(pos),
6575 -- Node destructor; called before removing node.
6576 -- Not called for bulk node placement.
6579 after_destruct = function(pos, oldnode),
6580 -- Node destructor; called after removing node.
6581 -- Not called for bulk node placement.
6584 on_flood = function(pos, oldnode, newnode),
6585 -- Called when a liquid (newnode) is about to flood oldnode, if it has
6586 -- `floodable = true` in the nodedef. Not called for bulk node placement
6587 -- (i.e. schematics and VoxelManip) or air nodes. If return true the
6588 -- node is not flooded, but on_flood callback will most likely be called
6589 -- over and over again every liquid update interval.
6591 -- Warning: making a liquid node 'floodable' will cause problems.
6593 preserve_metadata = function(pos, oldnode, oldmeta, drops),
6594 -- Called when oldnode is about be converted to an item, but before the
6595 -- node is deleted from the world or the drops are added. This is
6596 -- generally the result of either the node being dug or an attached node
6597 -- becoming detached.
6598 -- drops is a table of ItemStacks, so any metadata to be preserved can
6599 -- be added directly to one or more of the dropped items. See
6600 -- "ItemStackMetaRef".
6603 after_place_node = function(pos, placer, itemstack, pointed_thing),
6604 -- Called after constructing node when node was placed using
6605 -- minetest.item_place_node / minetest.place_node.
6606 -- If return true no item is taken from itemstack.
6607 -- `placer` may be any valid ObjectRef or nil.
6610 after_dig_node = function(pos, oldnode, oldmetadata, digger),
6611 -- oldmetadata is in table format.
6612 -- Called after destructing node when node was dug using
6613 -- minetest.node_dig / minetest.dig_node.
6616 can_dig = function(pos, [player]),
6617 -- Returns true if node can be dug, or false if not.
6620 on_punch = function(pos, node, puncher, pointed_thing),
6621 -- default: minetest.node_punch
6622 -- By default calls minetest.register_on_punchnode callbacks.
6624 on_rightclick = function(pos, node, clicker, itemstack, pointed_thing),
6626 -- itemstack will hold clicker's wielded item.
6627 -- Shall return the leftover itemstack.
6628 -- Note: pointed_thing can be nil, if a mod calls this function.
6629 -- This function does not get triggered by clients <=0.4.16 if the
6630 -- "formspec" node metadata field is set.
6632 on_dig = function(pos, node, digger),
6633 -- default: minetest.node_dig
6634 -- By default checks privileges, wears out tool and removes node.
6636 on_timer = function(pos, elapsed),
6638 -- called by NodeTimers, see minetest.get_node_timer and NodeTimerRef.
6639 -- elapsed is the total time passed since the timer was started.
6640 -- return true to run the timer for another cycle with the same timeout
6643 on_receive_fields = function(pos, formname, fields, sender),
6644 -- fields = {name1 = value1, name2 = value2, ...}
6645 -- Called when an UI form (e.g. sign text input) returns data.
6646 -- See minetest.register_on_player_receive_fields for more info.
6649 allow_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player),
6650 -- Called when a player wants to move items inside the inventory.
6651 -- Return value: number of items allowed to move.
6653 allow_metadata_inventory_put = function(pos, listname, index, stack, player),
6654 -- Called when a player wants to put something into the inventory.
6655 -- Return value: number of items allowed to put.
6656 -- Return value -1: Allow and don't modify item count in inventory.
6658 allow_metadata_inventory_take = function(pos, listname, index, stack, player),
6659 -- Called when a player wants to take something out of the inventory.
6660 -- Return value: number of items allowed to take.
6661 -- Return value -1: Allow and don't modify item count in inventory.
6663 on_metadata_inventory_move = function(pos, from_list, from_index, to_list, to_index, count, player),
6664 on_metadata_inventory_put = function(pos, listname, index, stack, player),
6665 on_metadata_inventory_take = function(pos, listname, index, stack, player),
6666 -- Called after the actual action has happened, according to what was
6670 on_blast = function(pos, intensity),
6671 -- intensity: 1.0 = mid range of regular TNT.
6672 -- If defined, called when an explosion touches the node, instead of
6673 -- removing the node.
6679 Used by `minetest.register_craft`.
6684 output = 'default:pick_stone',
6686 {'default:cobble', 'default:cobble', 'default:cobble'},
6687 {'', 'default:stick', ''},
6688 {'', 'default:stick', ''}, -- Also groups; e.g. 'group:crumbly'
6690 replacements = <list of item pairs>,
6691 -- replacements: replace one input item with another item on crafting
6699 output = 'mushrooms:mushroom_stew',
6702 "mushrooms:mushroom_brown",
6703 "mushrooms:mushroom_red",
6705 replacements = <list of item pairs>,
6711 type = "toolrepair",
6712 additional_wear = -0.02,
6715 Note: Tools with group `disable_repair=1` will not repairable by this recipe.
6721 output = "default:glass",
6722 recipe = "default:sand",
6730 recipe = "bucket:bucket_lava",
6732 replacements = {{"bucket:bucket_lava", "bucket:bucket_empty"}},
6738 Used by `minetest.register_ore`.
6740 See [Ores] section above for essential information.
6743 ore_type = "scatter",
6745 ore = "default:stone_with_coal",
6748 -- Facedir rotation. Default is 0 (unchanged rotation)
6750 wherein = "default:stone",
6751 -- A list of nodenames is supported too
6753 clust_scarcity = 8 * 8 * 8,
6754 -- Ore has a 1 out of clust_scarcity chance of spawning in a node.
6755 -- If the desired average distance between ores is 'd', set this to
6759 -- Number of ores in a cluster
6762 -- Size of the bounding box of the cluster.
6763 -- In this example, there is a 3 * 3 * 3 cluster where 8 out of the 27
6764 -- nodes are coal ore.
6768 -- Lower and upper limits for ore
6771 -- Attributes for the ore generation, see 'Ore attributes' section above
6773 noise_threshold = 0.5,
6774 -- If noise is above this threshold, ore is placed. Not needed for a
6775 -- uniform distribution.
6780 spread = {x = 100, y = 100, z = 100},
6785 -- NoiseParams structure describing one of the perlin noises used for
6786 -- ore distribution.
6787 -- Needed by "sheet", "puff", "blob" and "vein" ores.
6788 -- Omit from "scatter" ore for a uniform ore distribution.
6789 -- Omit from "stratum" ore for a simple horizontal strata from y_min to
6792 biomes = {"desert", "rainforest"},
6793 -- List of biomes in which this ore occurs.
6794 -- Occurs in all biomes if this is omitted, and ignored if the Mapgen
6795 -- being used does not support biomes.
6796 -- Can be a list of (or a single) biome names, IDs, or definitions.
6798 -- Type-specific parameters
6801 column_height_min = 1,
6802 column_height_max = 16,
6803 column_midpoint_factor = 0.5,
6809 spread = {x = 100, y = 100, z = 100},
6817 spread = {x = 100, y = 100, z = 100},
6824 random_factor = 1.0,
6827 np_stratum_thickness = {
6830 spread = {x = 100, y = 100, z = 100},
6835 stratum_thickness = 8,
6841 Used by `minetest.register_biome`.
6846 node_dust = "default:snow",
6847 -- Node dropped onto upper surface after all else is generated
6849 node_top = "default:dirt_with_snow",
6851 -- Node forming surface layer of biome and thickness of this layer
6853 node_filler = "default:permafrost",
6855 -- Node forming lower layer of biome and thickness of this layer
6857 node_stone = "default:bluestone",
6858 -- Node that replaces all stone nodes between roughly y_min and y_max.
6860 node_water_top = "default:ice",
6861 depth_water_top = 10,
6862 -- Node forming a surface layer in seawater with the defined thickness
6865 -- Node that replaces all seawater nodes not in the surface layer
6867 node_river_water = "default:ice",
6868 -- Node that replaces river water in mapgens that use
6869 -- default:river_water
6871 node_riverbed = "default:gravel",
6873 -- Node placed under river water and thickness of this layer
6875 node_cave_liquid = "default:lava_source",
6876 node_cave_liquid = {"default:water_source", "default:lava_source"},
6877 -- Nodes placed inside 50% of the medium size caves.
6878 -- Multiple nodes can be specified, each cave will use a randomly
6879 -- chosen node from the list.
6880 -- If this field is left out or 'nil', cave liquids fall back to
6881 -- classic behaviour of lava and water distributed using 3D noise.
6882 -- For no cave liquid, specify "air".
6884 node_dungeon = "default:cobble",
6885 -- Node used for primary dungeon structure.
6886 -- If absent, dungeon nodes fall back to the 'mapgen_cobble' mapgen
6887 -- alias, if that is also absent, dungeon nodes fall back to the biome
6889 -- If present, the following two nodes are also used.
6891 node_dungeon_alt = "default:mossycobble",
6892 -- Node used for randomly-distributed alternative structure nodes.
6893 -- If alternative structure nodes are not wanted leave this absent for
6894 -- performance reasons.
6896 node_dungeon_stair = "stairs:stair_cobble",
6897 -- Node used for dungeon stairs.
6898 -- If absent, stairs fall back to 'node_dungeon'.
6902 -- Upper and lower limits for biome.
6903 -- Alternatively you can use xyz limits as shown below.
6905 max_pos = {x = 31000, y = 128, z = 31000},
6906 min_pos = {x = -31000, y = 9, z = -31000},
6907 -- xyz limits for biome, an alternative to using 'y_min' and 'y_max'.
6908 -- Biome is limited to a cuboid defined by these positions.
6909 -- Any x, y or z field left undefined defaults to -31000 in 'min_pos' or
6910 -- 31000 in 'max_pos'.
6913 -- Vertical distance in nodes above 'y_max' over which the biome will
6914 -- blend with the biome above.
6915 -- Set to 0 for no vertical blend. Defaults to 0.
6918 humidity_point = 50,
6919 -- Characteristic temperature and humidity for the biome.
6920 -- These values create 'biome points' on a voronoi diagram with heat and
6921 -- humidity as axes. The resulting voronoi cells determine the
6922 -- distribution of the biomes.
6923 -- Heat and humidity have average values of 50, vary mostly between
6924 -- 0 and 100 but can exceed these values.
6927 Decoration definition
6928 ---------------------
6930 See [Decoration types]. Used by `minetest.register_decoration`.
6933 deco_type = "simple",
6935 place_on = "default:dirt_with_grass",
6936 -- Node (or list of nodes) that the decoration can be placed on
6939 -- Size of the square divisions of the mapchunk being generated.
6940 -- Determines the resolution of noise variation if used.
6941 -- If the chunk size is not evenly divisible by sidelen, sidelen is made
6942 -- equal to the chunk size.
6945 -- The value determines 'decorations per surface node'.
6946 -- Used only if noise_params is not specified.
6947 -- If >= 10.0 complete coverage is enabled and decoration placement uses
6948 -- a different and much faster method.
6953 spread = {x = 100, y = 100, z = 100},
6960 -- NoiseParams structure describing the perlin noise used for decoration
6962 -- A noise value is calculated for each square division and determines
6963 -- 'decorations per surface node' within each division.
6964 -- If the noise value >= 10.0 complete coverage is enabled and
6965 -- decoration placement uses a different and much faster method.
6967 biomes = {"Oceanside", "Hills", "Plains"},
6968 -- List of biomes in which this decoration occurs. Occurs in all biomes
6969 -- if this is omitted, and ignored if the Mapgen being used does not
6971 -- Can be a list of (or a single) biome names, IDs, or definitions.
6975 -- Lower and upper limits for decoration.
6976 -- These parameters refer to the Y co-ordinate of the 'place_on' node.
6978 spawn_by = "default:water",
6979 -- Node (or list of nodes) that the decoration only spawns next to.
6980 -- Checks two horizontal planes of 8 neighbouring nodes (including
6981 -- diagonal neighbours), one plane level with the 'place_on' node and a
6982 -- plane one node above that.
6985 -- Number of spawn_by nodes that must be surrounding the decoration
6986 -- position to occur.
6987 -- If absent or -1, decorations occur next to any nodes.
6989 flags = "liquid_surface, force_placement, all_floors, all_ceilings",
6990 -- Flags for all decoration types.
6991 -- "liquid_surface": Instead of placement on the highest solid surface
6992 -- in a mapchunk column, placement is on the highest liquid surface.
6993 -- Placement is disabled if solid nodes are found above the liquid
6995 -- "force_placement": Nodes other than "air" and "ignore" are replaced
6996 -- by the decoration.
6997 -- "all_floors", "all_ceilings": Instead of placement on the highest
6998 -- surface in a mapchunk the decoration is placed on all floor and/or
6999 -- ceiling surfaces, for example in caves and dungeons.
7000 -- Ceiling decorations act as an inversion of floor decorations so the
7001 -- effect of 'place_offset_y' is inverted.
7002 -- Y-slice probabilities do not function correctly for ceiling
7003 -- schematic decorations as the behaviour is unchanged.
7004 -- If a single decoration registration has both flags the floor and
7005 -- ceiling decorations will be aligned vertically.
7007 ----- Simple-type parameters
7009 decoration = "default:grass",
7010 -- The node name used as the decoration.
7011 -- If instead a list of strings, a randomly selected node from the list
7012 -- is placed as the decoration.
7015 -- Decoration height in nodes.
7016 -- If height_max is not 0, this is the lower limit of a randomly
7020 -- Upper limit of the randomly selected height.
7021 -- If absent, the parameter 'height' is used as a constant.
7024 -- Param2 value of decoration nodes.
7025 -- If param2_max is not 0, this is the lower limit of a randomly
7029 -- Upper limit of the randomly selected param2.
7030 -- If absent, the parameter 'param2' is used as a constant.
7033 -- Y offset of the decoration base node relative to the standard base
7035 -- Can be positive or negative. Default is 0.
7036 -- Effect is inverted for "all_ceilings" decorations.
7037 -- Ignored by 'y_min', 'y_max' and 'spawn_by' checks, which always refer
7038 -- to the 'place_on' node.
7040 ----- Schematic-type parameters
7042 schematic = "foobar.mts",
7043 -- If schematic is a string, it is the filepath relative to the current
7044 -- working directory of the specified Minetest schematic file.
7045 -- Could also be the ID of a previously registered schematic.
7048 size = {x = 4, y = 6, z = 4},
7050 {name = "default:cobble", param1 = 255, param2 = 0},
7051 {name = "default:dirt_with_grass", param1 = 255, param2 = 0},
7052 {name = "air", param1 = 255, param2 = 0},
7056 {ypos = 2, prob = 128},
7057 {ypos = 5, prob = 64},
7061 -- Alternative schematic specification by supplying a table. The fields
7062 -- size and data are mandatory whereas yslice_prob is optional.
7063 -- See 'Schematic specifier' for details.
7065 replacements = {["oldname"] = "convert_to", ...},
7067 flags = "place_center_x, place_center_y, place_center_z",
7068 -- Flags for schematic decorations. See 'Schematic attributes'.
7071 -- Rotation can be "0", "90", "180", "270", or "random"
7074 -- If the flag 'place_center_y' is set this parameter is ignored.
7075 -- Y offset of the schematic base node layer relative to the 'place_on'
7077 -- Can be positive or negative. Default is 0.
7078 -- Effect is inverted for "all_ceilings" decorations.
7079 -- Ignored by 'y_min', 'y_max' and 'spawn_by' checks, which always refer
7080 -- to the 'place_on' node.
7083 Chat command definition
7084 -----------------------
7086 Used by `minetest.register_chatcommand`.
7089 params = "<name> <privilege>", -- Short parameter description
7091 description = "Remove privilege from player", -- Full description
7093 privs = {privs=true}, -- Require the "privs" privilege to run
7095 func = function(name, param),
7096 -- Called when command is run. Returns boolean success and text output.
7099 Note that in params, use of symbols is as follows:
7101 * `<>` signifies a placeholder to be replaced when the command is used. For
7102 example, when a player name is needed: `<name>`
7103 * `[]` signifies param is optional and not required when the command is used.
7104 For example, if you require param1 but param2 is optional:
7105 `<param1> [<param2>]`
7106 * `|` signifies exclusive or. The command requires one param from the options
7107 provided. For example: `<param1> | <param2>`
7108 * `()` signifies grouping. For example, when param1 and param2 are both
7109 required, or only param3 is required: `(<param1> <param2>) | <param3>`
7111 Privilege definition
7112 --------------------
7114 Used by `minetest.register_privilege`.
7118 -- Privilege description
7120 give_to_singleplayer = true,
7121 -- Whether to grant the privilege to singleplayer.
7123 give_to_admin = true,
7124 -- Whether to grant the privilege to the server admin.
7125 -- Uses value of 'give_to_singleplayer' by default.
7127 on_grant = function(name, granter_name),
7128 -- Called when given to player 'name' by 'granter_name'.
7129 -- 'granter_name' will be nil if the priv was granted by a mod.
7131 on_revoke = function(name, revoker_name),
7132 -- Called when taken from player 'name' by 'revoker_name'.
7133 -- 'revoker_name' will be nil if the priv was revoked by a mod.
7135 -- Note that the above two callbacks will be called twice if a player is
7136 -- responsible, once with the player name, and then with a nil player
7138 -- Return true in the above callbacks to stop register_on_priv_grant or
7139 -- revoke being called.
7142 Detached inventory callbacks
7143 ----------------------------
7145 Used by `minetest.create_detached_inventory`.
7148 allow_move = function(inv, from_list, from_index, to_list, to_index, count, player),
7149 -- Called when a player wants to move items inside the inventory.
7150 -- Return value: number of items allowed to move.
7152 allow_put = function(inv, listname, index, stack, player),
7153 -- Called when a player wants to put something into the inventory.
7154 -- Return value: number of items allowed to put.
7155 -- Return value -1: Allow and don't modify item count in inventory.
7157 allow_take = function(inv, listname, index, stack, player),
7158 -- Called when a player wants to take something out of the inventory.
7159 -- Return value: number of items allowed to take.
7160 -- Return value -1: Allow and don't modify item count in inventory.
7162 on_move = function(inv, from_list, from_index, to_list, to_index, count, player),
7163 on_put = function(inv, listname, index, stack, player),
7164 on_take = function(inv, listname, index, stack, player),
7165 -- Called after the actual action has happened, according to what was
7175 Used by `Player:hud_add`. Returned by `Player:hud_get`.
7178 hud_elem_type = "image", -- See HUD element types
7179 -- Type of element, can be "image", "text", "statbar", or "inventory"
7181 position = {x=0.5, y=0.5},
7182 -- Left corner position of element
7186 scale = {x = 2, y = 2},
7193 -- Selected item in inventory. 0 for no item selected.
7196 -- Direction: 0: left-right, 1: right-left, 2: top-bottom, 3: bottom-top
7198 alignment = {x=0, y=0},
7200 offset = {x=0, y=0},
7202 size = { x=100, y=100 },
7203 -- Size of element in pixels
7209 Used by `minetest.add_particle`.
7212 pos = {x=0, y=0, z=0},
7213 velocity = {x=0, y=0, z=0},
7214 acceleration = {x=0, y=0, z=0},
7215 -- Spawn particle at pos with velocity and acceleration
7218 -- Disappears after expirationtime seconds
7221 -- Scales the visual size of the particle texture.
7223 collisiondetection = false,
7224 -- If true collides with `walkable` nodes and, depending on the
7225 -- `object_collision` field, objects too.
7227 collision_removal = false,
7228 -- If true particle is removed when it collides.
7229 -- Requires collisiondetection = true to have any effect.
7231 object_collision = false,
7232 -- If true particle collides with objects that are defined as
7233 -- `physical = true,` and `collide_with_objects = true,`.
7234 -- Requires collisiondetection = true to have any effect.
7237 -- If true faces player using y axis only
7239 texture = "image.png",
7241 playername = "singleplayer",
7242 -- Optional, if specified spawns particle only on the player's client
7244 animation = {Tile Animation definition},
7245 -- Optional, specifies how to animate the particle texture
7248 -- Optional, specify particle self-luminescence in darkness.
7253 `ParticleSpawner` definition
7254 ----------------------------
7256 Used by `minetest.add_particlespawner`.
7260 -- Number of particles spawned over the time period `time`.
7263 -- Lifespan of spawner in seconds.
7264 -- If time is 0 spawner has infinite lifespan and spawns the `amount` on
7265 -- a per-second basis.
7267 minpos = {x=0, y=0, z=0},
7268 maxpos = {x=0, y=0, z=0},
7269 minvel = {x=0, y=0, z=0},
7270 maxvel = {x=0, y=0, z=0},
7271 minacc = {x=0, y=0, z=0},
7272 maxacc = {x=0, y=0, z=0},
7277 -- The particles' properties are random values between the min and max
7279 -- pos, velocity, acceleration, expirationtime, size
7281 collisiondetection = false,
7282 -- If true collide with `walkable` nodes and, depending on the
7283 -- `object_collision` field, objects too.
7285 collision_removal = false,
7286 -- If true particles are removed when they collide.
7287 -- Requires collisiondetection = true to have any effect.
7289 object_collision = false,
7290 -- If true particles collide with objects that are defined as
7291 -- `physical = true,` and `collide_with_objects = true,`.
7292 -- Requires collisiondetection = true to have any effect.
7294 attached = ObjectRef,
7295 -- If defined, particle positions, velocities and accelerations are
7296 -- relative to this object's position and yaw
7299 -- If true face player using y axis only
7301 texture = "image.png",
7303 playername = "singleplayer",
7304 -- Optional, if specified spawns particles only on the player's client
7306 animation = {Tile Animation definition},
7307 -- Optional, specifies how to animate the particles' texture
7310 -- Optional, specify particle self-luminescence in darkness.
7314 `HTTPRequest` definition
7315 ------------------------
7317 Used by `HTTPApiTable.fetch` and `HTTPApiTable.fetch_async`.
7320 url = "http://example.org",
7323 -- Timeout for connection in seconds. Default is 3 seconds.
7325 post_data = "Raw POST request data string" OR {field1 = "data1", field2 = "data2"},
7326 -- Optional, if specified a POST request with post_data is performed.
7327 -- Accepts both a string and a table. If a table is specified, encodes
7328 -- table as x-www-form-urlencoded key-value pairs.
7329 -- If post_data is not specified, a GET request is performed instead.
7331 user_agent = "ExampleUserAgent",
7332 -- Optional, if specified replaces the default minetest user agent with
7335 extra_headers = { "Accept-Language: en-us", "Accept-Charset: utf-8" },
7336 -- Optional, if specified adds additional headers to the HTTP request.
7337 -- You must make sure that the header strings follow HTTP specification
7341 -- Optional, if true performs a multipart HTTP request.
7342 -- Default is false.
7345 `HTTPRequestResult` definition
7346 ------------------------------
7348 Passed to `HTTPApiTable.fetch` callback. Returned by
7349 `HTTPApiTable.fetch_async_get`.
7353 -- If true, the request has finished (either succeeded, failed or timed
7357 -- If true, the request was successful
7360 -- If true, the request timed out
7368 Authentication handler definition
7369 ---------------------------------
7371 Used by `minetest.register_authentication_handler`.
7374 get_auth = function(name),
7375 -- Get authentication data for existing player `name` (`nil` if player
7377 -- Returns following structure:
7378 -- `{password=<string>, privileges=<table>, last_login=<number or nil>}`
7380 create_auth = function(name, password),
7381 -- Create new auth data for player `name`.
7382 -- Note that `password` is not plain-text but an arbitrary
7383 -- representation decided by the engine.
7385 delete_auth = function(name),
7386 -- Delete auth data of player `name`.
7387 -- Returns boolean indicating success (false if player is nonexistent).
7389 set_password = function(name, password),
7390 -- Set password of player `name` to `password`.
7391 -- Auth data should be created if not present.
7393 set_privileges = function(name, privileges),
7394 -- Set privileges of player `name`.
7395 -- `privileges` is in table form, auth data should be created if not
7398 reload = function(),
7399 -- Reload authentication data from the storage location.
7400 -- Returns boolean indicating success.
7402 record_login = function(name),
7403 -- Called when player joins, used for keeping track of last_login
7405 iterate = function(),
7406 -- Returns an iterator (use with `for` loops) for all player names
7407 -- currently in the auth database