-Minetest Lua Modding API Reference 0.4.6
+Minetest Lua Modding API Reference 0.4.7
========================================
-More information at http://c55.me/minetest/
+More information at http://www.minetest.net/
+Developer Wiki: http://dev.minetest.net/
Introduction
-------------
The game directory contains the file game.conf, which contains these fields:
name = <Human-readable full name of the game>
- common_mods = <Comma-separated list of common mods>
eg.
name = Minetest
- common_mods = bucket, default, doors, fire, stairs
-
-Common mods are loaded from the pseudo-game "common".
The game directory can contain the file minetest.conf, which will be used
to set default settings when running the particular game.
-------------
Generic:
$path_share/games/gameid/mods/
- $path_share/mods/gameid/
+ $path_share/mods/
$path_user/games/gameid/mods/
- $path_user/mods/gameid/ <-- User-installed mods
+ $path_user/mods/ <-- User-installed mods
$worldpath/worldmods/
In a run-in-place version (eg. the distributed windows version):
List of mods that have to be loaded before loading this mod.
A single line contains a single modname.
+ Optional dependencies can be defined by appending a question mark
+ to a single modname. Their meaning is that if the specified mod
+ is missing, that does not prevent this mod from being loaded.
+
+optdepends.txt:
+ An alternative way of specifying optional dependencies.
+ Like depends.txt, a single line contains a single modname.
+
+ NOTE: This file exists for compatibility purposes only and
+ support for it will be removed from the engine by the end of 2013.
+
init.lua:
The main Lua script. Running this script should register everything it
wants to register. Subsequent execution depends on minetest calling the
- liquid
- flowingliquid
- glasslike
+- glasslike_framed
- allfaces
- allfaces_optional
- torchlike
Also produce this same ore between the height range of -height_max and -height_min.
Useful for having ore in sky realms without having to duplicate ore entries.
+Decoration types
+-------------------
+The varying types of decorations that can be placed.
+The default value is simple, and is currently the only type supported.
+
+- simple
+ Creates a 1xHx1 column of a specified node (or a random node from a list, if a decoration
+ list is specified). Can specify a certain node it must spawn next to, such as water or lava,
+ for example. Can also generate a decoration of random height between a specified lower and
+ upper bound. This type of decoration is intended for placement of grass, flowers, cacti,
+ papyrus, and so on.
+- schematic
+ Copies a box of MapNodes from a specified schematic file (or raw description). Can specify a
+ probability of a node randomly appearing when placed. This decoration type is intended to be used
+ for multi-node sized discrete structures, such as trees, cave spikes, rocks, and so on.
+
+Schematic specifier
+--------------------
+ A schematic specifier identifies a schematic by either a filename to a Minetest Schematic file (.mts)
+or through raw data supplied through Lua, in the form of a table. This table must specify two fields:
+ - The 'size' field is a 3d vector containing the dimensions of the provided schematic.
+ - The 'data' field is a flat table of MapNodes making up the schematic, in the order of [z [y [x]]].
+
+In the bulk MapNode data, param1, instead of the typical light values, instead represents the
+probability of that node appearing in the structure.
+When passed to minetest.create_schematic, probability is an integer value ranging from -1 to 255:
+ - A probability value of 0 means that node will always appear.
+ - A probability value of -1 means the node will never appear.
+ - If the probability value p is greater than 0, then there is a (p / 256 * 100)% chance that node
+ will appear when the schematic is placed on the map.
+
+If registering a structure in the raw format, however, -1 is not a valid probability value; in order to
+have a node that is not placed, it must be CONTENT_IGNORE (the name for which is "ignore").
+
+Important note: Node aliases cannot be used for a raw schematic provided when registering as a decoration.
+
+Schematic attributes
+---------------------
+Currently supported flags: place_center_x, place_center_y, place_center_z
+ - place_center_x
+ Placement of this decoration is centered along the X axis.
+ - place_center_y
+ Placement of this decoration is centered along the Y axis.
+ - place_center_z
+ Placement of this decoration is centered along the Z axis.
+
HUD element types
-------------------
The position field is used for all element types.
The alignment field specifies how the item will be aligned. It ranges from -1 to 1,
with 0 being the center, -1 is moved to the left/up, and 1 is to the right/down. Fractional
values can be used.
+The offset field specifies a pixel offset from the position. Contrary to position,
+the offset is not scaled to screen size. This allows for some precisely-positioned
+items in the HUD.
Below are the specific uses for fields in each type; fields not listed for that type are ignored.
Note: Future revisions to the HUD API may be incompatible; the HUD API is still in the experimental stages.
Only the X coordinate scale is used.
- text: The name of the texture that is displayed.
- alignment: The alignment of the image.
+ - offset: offset in pixels from position.
- text
Displays text on the HUD.
- scale: Defines the bounding rectangle of the text.
- number: An integer containing the RGB value of the color used to draw the text.
Specify 0xFFFFFF for white text, 0xFF0000 for red, and so on.
- alignment: The alignment of the text.
+ - offset: offset in pixels from position.
- statbar
Displays a horizontal bar made up of half-images.
- text: The name of the texture that is used.
- number: The number of half-textures that are displayed.
If odd, will end with a vertically center-split texture.
- direction
+ - offset: offset in pixels from position.
- inventory
- text: The name of the inventory list to be displayed.
- number: Number of items in the inventory to be displayed.
--------------------------------
Position/vector:
{x=num, y=num, z=num}
-Currently the API does not provide any helper functions for addition,
-subtraction and whatever; you can define those that you need yourself.
+For helper functions see "Vector helpers".
pointed_thing:
{type="nothing"}
- Groups are stored in a table, having the group names with keys and the
group ratings as values. For example:
groups = {crumbly=3, soil=1}
- ^ Default dirt (soil group actually currently not defined; TODO)
+ ^ Default dirt
groups = {crumbly=2, soil=1, level=2, outerspace=1}
^ A more special dirt-kind of thing
- Groups always have a rating associated with them. If there is no
- attached_node: if the node under it is not a walkable block the node will be
dropped as an item. If the node is wallmounted the
wallmounted direction is checked.
+- soil: saplings will grow on nodes in this group
+- connect_to_raillike: makes nodes of raillike drawtype connect to
+ other group members with same drawtype
Known damage and digging time defining groups
----------------------------------------------
Example stuff:
-local meta = minetest.env:get_meta(pos)
+local meta = minetest.get_meta(pos)
meta:set_string("formspec",
"invsize[8,9;]"..
"list[context;main;0,0;8,4;]"..
^ Position and size units are inventory slots
^ Example for formspec 8x4 in 16x resolution: image shall be sized 8*16px x 4*16px
+pwdfield[<X>,<Y>;<W>,<H>;<name>;<label>]
+^ Textual password style field; will be sent to server when a button is clicked
+^ x and y position the field relative to the top left of the menu
+^ w and h are the size of the field
+^ fields are a set height, but will be vertically centred on h
+^ Position and size units are inventory slots
+^ name is the name of the field as returned in fields to on_receive_fields
+^ label, if not blank, will be text printed on the top left above the field
+
field[<X>,<Y>;<W>,<H>;<name>;<label>;<default>]
^ Textual field; will be sent to server when a button is clicked
^ x and y position the field relative to the top left of the menu
^ label is the text on the label
^ Position and size units are inventory slots
+vertlabel[<X>,<Y>;<label>]
+^ Textual label drawn verticaly
+^ x and y work as per field
+^ label is the text on the label
+^ Position and size units are inventory slots
+
button[<X>,<Y>;<W>,<H>;<name>;<label>]
^ Clickable button. When clicked, fields will be sent.
^ x, y and name work as per field
^ image is the filename of an image
^ Position and size units are inventory slots
+image_button[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>;<noclip>;<drawborder>]
+^ x, y, w, h, and name work as per button
+^ image is the filename of an image
+^ Position and size units are inventory slots
+^ noclip true meand imagebutton doesn't need to be within specified formsize
+^ drawborder draw button bodrer or not
+
item_image_button[<X>,<Y>;<W>,<H>;<item name>;<name>;<label>]
^ x, y, w, h, name and label work as per button
^ item name is the registered name of an item/node,
image_button_exit[<X>,<Y>;<W>,<H>;<texture name>;<name>;<label>]
^ When clicked, fields will be sent and the form will quit.
+textlist[<X>,<Y>;<W>,<H>;<name>;<listelem 1>,<listelem 2>,...,<listelem n>]
+^Scrollabel itemlist showing arbitrary text elements
+^ x and y position the itemlist relative to the top left of the menu
+^ w and h are the size of the itemlist
+^ name fieldname sent to server on doubleclick value is current selected element
+^ listelements can be prepended by #colorkey (see colorkeys),
+^ if you want a listelement to start with # write ##
+
+textlist[<X>,<Y>;<W>,<H>;<name>;<listelem 1>,<listelem 2>,...,<listelem n>;<selected idx>;<transparent>]
+^Scrollabel itemlist showing arbitrary text elements
+^ x and y position the itemlist relative to the top left of the menu
+^ w and h are the size of the itemlist
+^ name fieldname sent to server on doubleclick value is current selected element
+^ listelements can be prepended by #RRGGBB in hexadecimal format
+^ if you want a listelement to start with # write ##
+^ index to be selected within textlist
+^ true/false draw transparent background
+
+tabheader[<X>,<Y>;<name>;<caption 1>,<caption 2>,...,<caption n>;<current_tab>;<transparent>;<draw_border>]
+^ show a tabHEADER at specific position (ignores formsize)
+^ x and y position the itemlist relative to the top left of the menu
+^ name fieldname data is transfered to lua
+^ caption 1... name shown on top of tab
+^ current_tab index of selected tab 1...
+^ transparent (optional) show transparent
+^ draw_border (optional) draw border
+
+box[<X>,<Y>;<W>,<H>;<color>]
+^ simple colored semitransparent box
+^ x and y position the box relative to the top left of the menu
+^ w and h are the size of box
+^ colorkey (see colorkeys)
+
+dropdown[<X>,<Y>;<W>;<name>;<item 1>,<item 2>, ...,<item n>;<selected idx>]
+^ show a dropdown field
+^ x and y position of dropdown
+^ width of dropdown
+^ fieldname data is transfered to lua
+^ items to be shown in dropdown
+^ index of currently selected dropdown item
+^ color in hexadecimal format RRGGBB
+
+Note: do NOT use a element name starting with "key_" those names are reserved to
+pass key press events to formspec!
+
Inventory location:
- "context": Selected node metadata (deprecated: "current_name")
- "nodemeta:<X>,<Y>,<Z>": Any node metadata
- "detached:<name>": A detached inventory
+Vector helpers
+---------------
+vector.new([x[, y, z]]) -> vector
+ ^ x is a table or the x position.
+vector.direction(p1, p2) -> vector
+vector.distance(p1, p2) -> number
+vector.length(v) -> number
+vector.normalize(v) -> vector
+vector.round(v) -> vector
+vector.equal(v1, v2) -> bool
+vector.add(v, x) -> vector
+ ^ x can be annother vector or a number
+vector.subtract(v, x) -> vector
+vector.multiply(v, x) -> vector
+vector.divide(v, x) -> vector
+
+You can also use Lua operators on vectors.
+For example:
+ v1 = vector.new()
+ v1 = v1 + 5
+ v2 = vector.new(v1)
+ v1 = v1 * v2
+ if v1 == v2 then
+ error("Math broke")
+ end
+
Helper functions
-----------------
dump2(obj, name="_", dumped={})
^ Return object serialized as a string, handles reference loops
dump(obj, dumped={})
^ Return object serialized as a string
+math.hypot(x, y)
+^ Get the hypotenuse of a triangle with legs x and y.
+ Usefull for distance calculation.
string:split(separator)
^ eg. string:split("a,b", ",") == {"a","b"}
string:trim()
minetest namespace reference
-----------------------------
+Utilities:
minetest.get_current_modname() -> string
minetest.get_modpath(modname) -> eg. "/home/user/.minetest/usermods/modname"
^ Useful for loading additional .lua modules or static data from mod
minetest.get_worldpath() -> eg. "/home/user/.minetest/world"
^ Useful for storing custom data
minetest.is_singleplayer()
+minetest.features
+^ table containing API feature flags: {foo=true, bar=true}
+minetest.has_feature(arg) -> bool, missing_features
+^ arg: string or table in format {foo=true, bar=true}
+^ missing_features: {foo=true, bar=true}
+Logging:
minetest.debug(line)
^ Always printed to stderr and logfile (print() is redirected here)
minetest.log(line)
minetest.register_alias(name, convert_to)
minetest.register_craft(recipe)
minetest.register_ore(ore definition)
+minetest.register_decoration(decoration definition)
Global callback registration functions: (Call these only at load time)
minetest.register_globalstep(func(dtime))
minetest.register_on_placenode(func(pos, newnode, placer, oldnode, itemstack))
^ Called when a node has been placed
^ If return true no item is taken from itemstack
-^ Deprecated: Use on_construct or after_place_node in node definition instead
+^ Not recommended; use on_construct or after_place_node in node definition
+^ whenever possible
minetest.register_on_dignode(func(pos, oldnode, digger))
^ Called when a node has been dug.
-^ Deprecated: Use on_destruct or after_dig_node in node definition instead
+^ Not recommended: Use on_destruct or after_dig_node in node definition
+^ whenever possible
minetest.register_on_punchnode(func(pos, node, puncher))
^ Called when a node is punched
minetest.register_on_generated(func(minp, maxp, blockseed))
^ Called when a button is pressed in player's inventory form
^ Newest functions are called first
^ If function returns true, remaining functions are not called
+minetest.register_on_mapgen_init(func(MapgenParams))
+^ Called just before the map generator is initialized but before the environment is initialized
+^ MapgenParams consists of a table with the fields mgname, seed, water_level, and flags
Other registration functions:
minetest.register_chatcommand(cmd, chatcommand definition)
minetest.setting_getbool(name) -> boolean value or nil
minetest.setting_get_pos(name) -> position or nil
minetest.setting_save() -> nil, save all settings to config file
-minetest.add_to_creative_inventory(itemstring)
Authentication:
minetest.notify_authentication_modified(name)
^ These call the authentication handler
minetest.check_player_privs(name, {priv1=true,...}) -> bool, missing_privs
^ A quickhand for checking privileges
+minetest.get_player_ip(name) -> IP address string
Chat:
minetest.chat_send_all(text)
-minetest.chat_send_player(name, text)
+minetest.chat_send_player(name, text, prepend)
+^ prepend: optional, if it is set to false "Server -!- " will not be prepended to the message
+
+Environment access:
+
+minetest.set_node(pos, node)
+minetest.add_node(pos, node): alias set_node(pos, node)
+^ Set node at position (node = {name="foo", param1=0, param2=0})
+minetest.remove_node(pos)
+^ Equivalent to set_node(pos, "air")
+minetest.get_node(pos)
+^ Returns {name="ignore", ...} for unloaded area
+minetest.get_node_or_nil(pos)
+^ Returns nil for unloaded area
+minetest.get_node_light(pos, timeofday) -> 0...15 or nil
+^ timeofday: nil = current time, 0 = night, 0.5 = day
+
+minetest.place_node(pos, node)
+^ Place node with the same effects that a player would cause
+minetest.dig_node(pos)
+^ Dig node with the same effects that a player would cause
+minetest.punch_node(pos)
+^ Punch node with the same effects that a player would cause
+
+minetest.get_meta(pos) -- Get a NodeMetaRef at that position
+minetest.get_node_timer(pos) -- Get NodeTimerRef
+
+minetest.add_entity(pos, name): Spawn Lua-defined entity at position
+^ Returns ObjectRef, or nil if failed
+minetest.add_item(pos, item): Spawn item
+^ Returns ObjectRef, or nil if failed
+minetest.get_player_by_name(name) -- Get an ObjectRef to a player
+minetest.get_objects_inside_radius(pos, radius)
+minetest.set_timeofday(val): val: 0...1; 0 = midnight, 0.5 = midday
+minetest.get_timeofday()
+minetest.find_node_near(pos, radius, nodenames) -> pos or nil
+^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
+minetest.find_nodes_in_area(minp, maxp, nodenames) -> list of positions
+^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
+minetest.get_perlin(seeddiff, octaves, persistence, scale)
+^ Return world-specific perlin noise (int(worldseed)+seeddiff)
+minetest.get_voxel_manip()
+^ Return voxel manipulator object
+minetest.get_mapgen_object(objectname)
+^ Return requested mapgen object if available (see Mapgen objects)
+minetest.set_mapgen_params(MapgenParams)
+^ Set map generation parameters
+^ Function cannot be called after the registration period; only initialization and on_mapgen_init
+^ Takes a table as an argument with the fields mgname, seed, water_level, flags, and flagmask.
+^ Leave field unset to leave that parameter unchanged
+^ flagmask field must be set to all mapgen flags that are being modified
+^ flags contains only the flags that are being set
+^ flags and flagmask are in the same format and have the same options as 'mgflags' in minetest.conf
+minetest.clear_objects()
+^ clear all objects in the environments
+minetest.line_of_sight(pos1,pos2,stepsize) ->true/false
+^ checkif there is a direct line of sight between pos1 and pos2
+^ pos1 First position
+^ pos2 Second position
+^ stepsize smaller gives more accurate results but requires more computing
+ time. Default is 1.
+minetest.find_path(pos1,pos2,searchdistance,max_jump,max_drop,algorithm)
+^ -> table containing path
+^ returns a table of 3d points representing a path from pos1 to pos2 or nil
+^ pos1: start position
+^ pos2: end position
+^ searchdistance: number of blocks to search in each direction
+^ max_jump: maximum height difference to consider walkable
+^ max_drop: maximum height difference to consider droppable
+^ algorithm: A*_noprefetch(default), A*, Dijkstra
+minetest.spawn_tree (pos, {treedef})
+^ spawns L-System tree at given pos with definition in treedef table
Inventory:
minetest.get_inventory(location) -> InvRef
^ If playername is specified, only deletes on the player's client,
^ otherwise on all clients
+Schematics:
+minetest.create_schematic(p1, p2, probability_list, filename)
+^ Create a schematic from the volume of map specified by the box formed by p1 and p2.
+^ Apply the specified probability values to the specified nodes in probability_list.
+ ^ probability_list is an array of tables containing two fields, pos and prob.
+ ^ pos is the 3d vector specifying the absolute coordinates of the node being modified,
+ ^ and prob is the integer value from -1 to 255 of the probability (see: Schematic specifier).
+ ^ If there are two or more entries with the same pos value, the last occuring in the array is used.
+ ^ If pos is not inside the box formed by p1 and p2, it is ignored.
+ ^ If probability_list is nil, no probabilities are applied.
+^ Saves schematic in the Minetest Schematic format to filename.
+
+minetest.place_schematic(pos, schematic, rotation)
+^ Place the schematic specified by schematic (see: Schematic specifier) at pos.
+^ Rotation can be "0", "90", "180", "270", or "random".
+^ If the rotation parameter is omitted, the schematic is not rotated.
+
Random:
minetest.get_connected_players() -> list of ObjectRefs
minetest.hash_node_position({x=,y=,z=}) -> 48-bit integer
^ Get rating of a group of an item. (0 = not in group)
minetest.get_node_group(name, group) -> rating
^ Deprecated: An alias for the former.
+minetest.get_content_id(name) -> integer
+^ Gets the internal content ID of name
+minetest.get_name_from_content_id(content_id) -> string
+^ Gets the name of the content with that content ID
minetest.serialize(table) -> string
^ Convert a table containing tables, strings, numbers, booleans and nils
into string form readable by minetest.deserialize
Global objects:
minetest.env - EnvRef of the server environment and world.
-^ Using this you can access nodes and entities
+^ Any function in the minetest namespace can be called using the syntax
+ minetest.env:somefunction(somearguments)
+ instead of
+ minetest.somefunction(somearguments)
+^ Deprecated, but support is not to be dropped soon
Global tables:
minetest.registered_items
minetest.luaentities
^ List of lua entities, indexed by active object id
-Deprecated but defined for backwards compatibility:
-minetest.digprop_constanttime(time)
-minetest.digprop_stonelike(toughness)
-minetest.digprop_dirtlike(toughness)
-minetest.digprop_gravellike(toughness)
-minetest.digprop_woodlike(toughness)
-minetest.digprop_leaveslike(toughness)
-minetest.digprop_glasslike(toughness)
-
Class reference
----------------
-EnvRef: basically ServerEnvironment and ServerMap combined.
-methods:
-- set_node(pos, node)
-- add_node(pos, node): alias set_node(pos, node)
- ^ Set node at position (node = {name="foo", param1=0, param2=0})
-- remove_node(pos)
- ^ Equivalent to set_node(pos, "air")
-- get_node(pos)
- ^ Returns {name="ignore", ...} for unloaded area
-- get_node_or_nil(pos)
- ^ Returns nil for unloaded area
-- get_node_light(pos, timeofday) -> 0...15 or nil
- ^ timeofday: nil = current time, 0 = night, 0.5 = day
-
-- place_node(pos, node)
- ^ Place node with the same effects that a player would cause
-- dig_node(pos)
- ^ Dig node with the same effects that a player would cause
-- punch_node(pos)
- ^ Punch node with the same effects that a player would cause
-
-- get_meta(pos) -- Get a NodeMetaRef at that position
-- get_node_timer(pos) -- Get NodeTimerRef
-
-- add_entity(pos, name): Spawn Lua-defined entity at position
- ^ Returns ObjectRef, or nil if failed
-- add_item(pos, item): Spawn item
- ^ Returns ObjectRef, or nil if failed
-- get_player_by_name(name) -- Get an ObjectRef to a player
-- get_objects_inside_radius(pos, radius)
-- set_timeofday(val): val: 0...1; 0 = midnight, 0.5 = midday
-- get_timeofday()
-- find_node_near(pos, radius, nodenames) -> pos or nil
- ^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
-- find_nodes_in_area(minp, maxp, nodenames) -> list of positions
- ^ nodenames: eg. {"ignore", "group:tree"} or "default:dirt"
-- get_perlin(seeddiff, octaves, persistence, scale)
- ^ Return world-specific perlin noise (int(worldseed)+seeddiff)
-- clear_objects()
- ^ clear all objects in the environments
-- line_of_sight(pos1,pos2,stepsize) ->true/false
- ^ checkif there is a direct line of sight between pos1 and pos2
- ^ pos1 First position
- ^ pos2 Second position
- ^ stepsize smaller gives more accurate results but requires more computing
- time. Default is 1.
--find_path(pos1,pos2,searchdistance,max_jump,max_drop,algorithm) -> table containing path
- ^ returns a table of 3d points representing a path from pos1 to pos2 or nil
- ^ pos1: start position
- ^ pos2: end position
- ^ searchdistance: number of blocks to search in each direction
- ^ max_jump: maximum height difference to consider walkable
- ^ max_drop: maximum height difference to consider droppable
- ^ algorithm: A*_noprefetch(default), A*, Dijkstra
-- spawn_tree (pos, {treedef})
- ^ spawns L-System tree at given pos with definition in treedef table
-treedef={
- axiom, - string initial tree axiom
- rules_a, - string rules set A
- rules_b, - string rules set B
- rules_c, - string rules set C
- rules_d, - string rules set D
- trunk, - string trunk node name
- leaves, - string leaves node name
- leaves2, - string secondary leaves node name
- leaves2_chance,- num chance (0-100) to replace leaves with leaves2
- angle, - num angle in deg
- iterations, - num max # of iterations, usually 2 -5
- random_level, - num factor to lower nr of iterations, usually 0 - 3
- trunk_type, - string single/double/crossed) type of trunk: 1 node, 2x2 nodes or 3x3 in cross shape
- thin_branches, - boolean true -> use thin (1 node) branches
- fruit, - string fruit node name
- fruit_chance, - num chance (0-100) to replace leaves with fruit node
- seed, - num random seed
- }
-
-Key for Special L-System Symbols used in Axioms
- G - move forward one unit with the pen up
- F - move forward one unit with the pen down drawing trunks and branches
- f - move forward one unit with the pen down drawing leaves (100% chance)
- T - move forward one unit with the pen down drawing trunks only
- R - move forward one unit with the pen down placing fruit
- A - replace with rules set A
- B - replace with rules set B
- C - replace with rules set C
- D - replace with rules set D
- a - replace with rules set A, chance 90%
- b - replace with rules set B, chance 80%
- c - replace with rules set C, chance 70%
- d - replace with rules set D, chance 60%
- + - yaw the turtle right by angle parameter
- - - yaw the turtle left by angle parameter
- & - pitch the turtle down by angle parameter
- ^ - pitch the turtle up by angle parameter
- / - roll the turtle to the right by angle parameter
- * - roll the turtle to the left by angle parameter
- [ - save in stack current state info
- ] - recover from stack state info
-
-Example usage: spawn small apple tree
-apple_tree={
- axiom="FFFFFAFFBF",
- rules_a="[&&&FFFFF&&FFFF][&&&++++FFFFF&&FFFF][&&&----FFFFF&&FFFF]",
- rules_b="[&&&++FFFFF&&FFFF][&&&--FFFFF&&FFFF][&&&------FFFFF&&FFFF]",
- trunk="default:tree",
- leaves="default:leaves",
- angle=30,
- iterations=2,
- random_level=0,
- trunk_type="single",
- thin_branches=true,
- fruit_chance=10,
- fruit="default:apple"
- }
-minetest.env:spawn_tree(pos,apple_tree)
-
-Deprecated:
-- add_rat(pos): Add C++ rat object (no-op)
-- add_firefly(pos): Add C++ firefly object (no-op)
-
NodeMetaRef: Node metadata - reference extra data and functionality stored
in a node
-- Can be gotten via minetest.env:get_nodemeta(pos)
+- Can be gotten via minetest.get_nodemeta(pos)
methods:
- set_string(name, value)
- get_string(name)
^ See "Node Metadata"
NodeTimerRef: Node Timers - a high resolution persistent per-node timer
-- Can be gotten via minetest.env:get_node_timer(pos)
+- Can be gotten via minetest.get_node_timer(pos)
methods:
- set(timeout,elapsed)
^ set a timer's state
- get_look_yaw(): yaw in radians (wraps around pretty randomly as of now)
- set_look_pitch(radians): sets look pitch
- set_look_yaw(radians): sets look yaw
+- get_breath() : returns players breath
+- set_breath(value) : sets players breath
+ values: 0 player is drowning,
+ 1-10 number of bubbles remain,
+ 11 bubbles bar is not shown
- set_inventory_formspec(formspec)
^ Redefine player's inventory form
^ Should usually be called in on_joinplayer
- hud_change(id, stat, value): change a value of a previously added HUD element
^ element stat values: position, name, scale, text, number, item, dir
- hud_get(id): gets the HUD element definition structure of the specified ID
+- hud_set_flags(flags): sets specified HUD flags to true/false
+ ^ flags: (is visible) hotbar, healthbar, crosshair, wielditem
+ ^ pass a table containing a true/false value of each flag to be set or unset
+ ^ if a flag is nil, the flag is not modified
+- hud_set_hotbar_itemcount(count): sets number of items in builtin hotbar
+ ^ count: number of items, must be between 1 and 23
InvRef: Reference to an inventory
methods:
PerlinNoise: A perlin noise generator
- Can be created via PerlinNoise(seed, octaves, persistence, scale)
-- Also minetest.env:get_perlin(seeddiff, octaves, persistence, scale)
+- Also minetest.get_perlin(seeddiff, octaves, persistence, scale)
methods:
- get2d(pos) -> 2d noise value at pos={x=,y=}
- get3d(pos) -> 3d noise value at pos={x=,y=,z=}
+PerlinNoiseMap: A fast, bulk perlin noise generator
+- Can be created via PerlinNoiseMap(noiseparams, size)
+- Also minetest.get_perlin_map(noiseparams, size)
+methods:
+- get2dMap(pos) -> <size.x>X<size.y> 2d array of 2d noise values starting at pos={x=,y=}
+- get3dMap(pos) -> <size.x>X<size.y>X<size.z> 3d array of 3d noise values starting at pos={x=,y=,z=}
+- get2dMap_flat(pos) -> Flat <size.x * size.y> element array of 2d noise values starting at pos={x=,y=}
+- get3dMap_flat(pos) -> Same as get2dMap_flat, but 3d noise
+
+VoxelManip: An interface to the MapVoxelManipulator for Lua
+- Can be created via VoxelManip()
+- Also minetest.get_voxel_manip()
+methods:
+- read_from_map(p1, p2): Reads a chunk of map from the map containing the region formed by p1 and p2.
+ ^ returns actual emerged pmin, actual emerged pmax
+- write_to_map(): Writes the data loaded from the VoxelManip back to the map.
+ ^ important: data must be set using VoxelManip:set_data before calling this
+- get_data(): Gets the data read into the VoxelManip object
+ ^ returns raw node data is in the form of an array of node content ids
+- set_data(data): Sets the data contents of the VoxelManip object
+- update_map(): Update map after writing chunk back to map.
+ ^ To be used only by VoxelManip objects created by the mod itself; not a VoxelManip that was
+ ^ retrieved from minetest.get_mapgen_object
+- set_lighting(light): Set the lighting within the VoxelManip
+ ^ light is a table, {day=<0...15>, night=<0...15>}
+ ^ To be used only by a VoxelManip object from minetest.get_mapgen_object
+- calc_lighting(): Calculate lighting within the VoxelManip
+ ^ To be used only by a VoxelManip object from minetest.get_mapgen_object
+- update_liquids(): Update liquid flow
+
+VoxelArea: A helper class for voxel areas
+- Can be created via VoxelArea:new{MinEdge=pmin, MaxEdge=pmax}
+- Coordinates are *inclusive*, like most other things in Minetest
+methods:
+- getExtent(): returns a 3d vector containing the size of the area formed by MinEdge and MaxEdge
+- getVolume(): returns the volume of the area formed by MinEdge and MaxEdge
+- index(x, y, z): returns the index of an absolute position in a flat array starting at 1
+ ^ useful for things like VoxelManip, raw Schematic specifiers, PerlinNoiseMap:get2d/3dMap, and so on
+- indexp(p): same as above, except takes a vector
+- position(i): returns the absolute position vector corresponding to index i
+- contains(x, y, z): check if (x,y,z) is inside area formed by MinEdge and MaxEdge
+- containsp(p): same as above, except takes a vector
+- containsi(i): same as above, except takes an index
+- iter(minx, miny, minz, maxx, maxy, maxz): returns an iterator that returns indices
+ ^ from (minx,miny,minz) to (maxx,maxy,maxz) in the order of [z [y [x]]]
+- iterp(minp, maxp): same as above, except takes a vector
+
+Mapgen objects
+---------------
+A mapgen object is a construct used in map generation. Mapgen objects can be used by an on_generate
+callback to speed up operations by avoiding unnecessary recalculations; these can be retrieved using the
+minetest.get_mapgen_object() function. If the requested Mapgen object is unavailable, or
+get_mapgen_object() was called outside of an on_generate() callback, nil is returned.
+
+The following Mapgen objects are currently available:
+
+- voxelmanip
+ This returns three values; the VoxelManip object to be used, minimum and maximum emerged position, in that
+order. All mapgens support this object.
+
+- heightmap
+ Returns an array containing the y coordinates of the ground levels of nodes in the most recently
+generated chunk by the current mapgen.
+
+- biomemap
+ Returns an array containing the biome IDs of nodes in the most recently generated chunk by the
+current mapgen.
+
+- heatmap
+ Returns an array containing the temperature values of nodes in the most recently generated chunk by
+the current mapgen.
+
+- humiditymap
+ Returns an array containing the humidity values of nodes in the most recently generated chunk by the
+current mapgen.
+
Registered entities
--------------------
- Functions receive a "luaentity" as self:
^ Should return a string that will be passed to on_activate when
the object is instantiated the next time.
+L-system trees
+---------------
+treedef={
+ axiom, - string initial tree axiom
+ rules_a, - string rules set A
+ rules_b, - string rules set B
+ rules_c, - string rules set C
+ rules_d, - string rules set D
+ trunk, - string trunk node name
+ leaves, - string leaves node name
+ leaves2, - string secondary leaves node name
+ leaves2_chance,- num chance (0-100) to replace leaves with leaves2
+ angle, - num angle in deg
+ iterations, - num max # of iterations, usually 2 -5
+ random_level, - num factor to lower nr of iterations, usually 0 - 3
+ trunk_type, - string single/double/crossed) type of trunk: 1 node, 2x2 nodes or 3x3 in cross shape
+ thin_branches, - boolean true -> use thin (1 node) branches
+ fruit, - string fruit node name
+ fruit_chance, - num chance (0-100) to replace leaves with fruit node
+ seed, - num random seed
+ }
+
+Key for Special L-System Symbols used in Axioms
+ G - move forward one unit with the pen up
+ F - move forward one unit with the pen down drawing trunks and branches
+ f - move forward one unit with the pen down drawing leaves (100% chance)
+ T - move forward one unit with the pen down drawing trunks only
+ R - move forward one unit with the pen down placing fruit
+ A - replace with rules set A
+ B - replace with rules set B
+ C - replace with rules set C
+ D - replace with rules set D
+ a - replace with rules set A, chance 90%
+ b - replace with rules set B, chance 80%
+ c - replace with rules set C, chance 70%
+ d - replace with rules set D, chance 60%
+ + - yaw the turtle right by angle parameter
+ - - yaw the turtle left by angle parameter
+ & - pitch the turtle down by angle parameter
+ ^ - pitch the turtle up by angle parameter
+ / - roll the turtle to the right by angle parameter
+ * - roll the turtle to the left by angle parameter
+ [ - save in stack current state info
+ ] - recover from stack state info
+
+Example usage: spawn small apple tree
+apple_tree={
+ axiom="FFFFFAFFBF",
+ rules_a="[&&&FFFFF&&FFFF][&&&++++FFFFF&&FFFF][&&&----FFFFF&&FFFF]",
+ rules_b="[&&&++FFFFF&&FFFF][&&&--FFFFF&&FFFF][&&&------FFFFF&&FFFF]",
+ trunk="default:tree",
+ leaves="default:leaves",
+ angle=30,
+ iterations=2,
+ random_level=0,
+ trunk_type="single",
+ thin_branches=true,
+ fruit_chance=10,
+ fruit="default:apple"
+ }
+minetest.spawn_tree(pos,apple_tree)
+
Definition tables
------------------
^ Special textures of node; used rarely (old field name: special_materials)
^ List can be shortened to needed length
alpha = 255,
+ use_texture_alpha = false, -- Use texture's alpha channel
post_effect_color = {a=0, r=0, g=0, b=0}, -- If player is inside node
paramtype = "none", -- See "Nodes"
paramtype2 = "none", -- See "Nodes"
liquid_alternative_source = "", -- Source version of flowing liquid
liquid_viscosity = 0, -- Higher viscosity = slower flow (max. 7)
liquid_renewable = true, -- Can new liquid source be created by placing
+ drowning = true, -- Player will drown in these
two or more sources nearly?
light_source = 0, -- Amount of light emitted by node
damage_per_second = 0, -- If player is inside node, this damage is caused
after_place_node = func(pos, placer, itemstack),
^ Called after constructing node when node was placed using
- minetest.item_place_node / minetest.env:place_node
+ minetest.item_place_node / minetest.place_node
^ If return true no item is taken from itemstack
^ default: nil
after_dig_node = func(pos, oldnode, oldmetadata, digger),
^ oldmetadata is in table format
^ Called after destructing node when node was dug using
- minetest.node_dig / minetest.env:dig_node
+ minetest.node_dig / minetest.dig_node
^ default: nil
can_dig = function(pos,player)
^ returns true if node can be dug, or false if not
on_timer = function(pos,elapsed),
^ default: nil
- ^ called by NodeTimers, see EnvRef and NodeTimerRef
+ ^ called by NodeTimers, see minetest.get_node_timer and NodeTimerRef
^ elapsed is the total time passed since the timer was started
^ return true to run the timer for another cycle with the same timeout value
Ore definition (register_ore)
{
- ore_type = "scatter" -- See "Ore types"
+ ore_type = "scatter", -- See "Ore types"
ore = "default:stone_with_coal",
wherein = "default:stone",
clust_scarcity = 8*8*8,
^ Needed for sheet ore_type. Omit from scatter ore_type for a uniform ore distribution
}
+Decoration definition (register_decoration)
+{
+ deco_type = "simple", -- See "Decoration types"
+ place_on = "default:dirt_with_grass",
+ ^ Node that decoration can be placed on
+ sidelen = 8,
+ ^ Size of divisions made in the chunk being generated.
+ ^ If the chunk size is not evenly divisible by sidelen, sidelen is made equal to the chunk size.
+ fill_ratio = 0.02,
+ ^ Ratio of the area to be uniformly filled by the decoration.
+ ^ Used only if noise_params is not specified.
+ noise_params = {offset=0, scale=.45, spread={x=100, y=100, z=100}, seed=354, octaves=3, persist=0.7},
+ ^ NoiseParams structure describing the perlin noise used for decoration distribution.
+ ^ The result of this is multiplied by the 2d area of the division being decorated.
+ biomes = {"Oceanside", "Hills", "Plains"},
+ ^ List of biomes in which this decoration occurs. Occurs in all biomes if this is omitted,
+ ^ and ignored if the Mapgen being used does not support biomes.
+
+ ----- Simple-type parameters
+ decoration = "default:grass",
+ ^ The node name used as the decoration.
+ ^ If instead a list of strings, a randomly selected node from the list is placed as the decoration.
+ height = 1,
+ ^ Number of nodes high the decoration is made.
+ ^ If height_max is not 0, this is the lower bound of the randomly selected height.
+ height_max = 0,
+ ^ Number of nodes the decoration can be at maximum.
+ ^ If absent, the parameter 'height' is used as a constant.
+ spawn_by = "default:water",
+ ^ Node that the decoration only spawns next to, in a 1-node square radius.
+ num_spawn_by = 1,
+ ^ Number of spawn_by nodes that must be surrounding the decoration position to occur.
+ ^ If absent or -1, decorations occur next to any nodes.
+
+ ----- Schematic-type parameters
+ schematic = "foobar.mts",
+ ^ If schematic is a string, it is the filepath relative to the current working directory of the
+ ^ specified Minetest schematic file.
+ ^ - OR -, could instead be a table containing two fields, size and data:
+ schematic = {
+ size = {x=4, y=6, z=4},
+ data = {
+ {name="cobble", param1=0, param2=0},
+ {name="dirt_with_grass", param1=0, param2=0},
+ ...
+ }
+ },
+ ^ See 'Schematic specifier' for details.
+ flags = "place_center_x, place_center_z",
+ ^ Flags for schematic decorations. See 'Schematic attributes'.
+ rotation = "90" --rotate schematic 90 degrees on placement
+ ^ Rotation can be "0", "90", "180", "270", or "random".
+}
+
Chatcommand definition (register_chatcommand)
{
params = "<name> <privilege>", -- short parameter description
^ Direction: 0: left-right, 1: right-left, 2: top-bottom, 3: bottom-top
alignment = {x=0, y=0},
^ See "HUD Element Types"
+ offset = {x=0, y=0},
+ ^ See "HUD Element Types"
}
projects / dragonfireclient.git / blobdiff