-Minetest Lua Modding API Reference 0.4.7
+Minetest Lua Modding API Reference 0.4.8
========================================
More information at http://www.minetest.net/
Developer Wiki: http://dev.minetest.net/
mods
|-- modname
| |-- depends.txt
+| |-- screenshot.png
+| |-- description.txt
| |-- init.lua
| |-- textures
| | |-- modname_stuff.png
to a single modname. Their meaning is that if the specified mod
is missing, that does not prevent this mod from being loaded.
+screenshot.png:
+ A screenshot shown in modmanager within mainmenu.
+
+description.txt:
+ File containing desctiption to be shown within mainmenu.
+
optdepends.txt:
An alternative way of specifying optional dependencies.
Like depends.txt, a single line contains a single modname.
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]]].
+Important: The default value for param1 in MapNodes here is 255, which represents "always place".
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.
+When passed to minetest.create_schematic, probability is an integer value ranging from 0 to 255:
+ - A probability value of 0 means that node will never appear (0% chance).
+ - A probability value of 255 means the node will always appear (100% chance).
- 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
- image
Displays an image on the HUD.
- - scale: The scale of the image, with 1 being the original texture size.
- Only the X coordinate scale is used.
+ - scale: The scale of the image, with 1 being the original texture size.
+ Only the X coordinate scale is used (positive values)
+ Negative values represent that percentage of the screen it
+ should take; e.g. x=-100 means 100% (width)
- text: The name of the texture that is displayed.
- alignment: The alignment of the image.
- offset: offset in pixels from position.
list[<inventory location>;<list name>;<X>,<Y>;<W>,<H>;<starting item index>]
^ Show an inventory list
+listcolors[<slot_bg_normal>;<slot_bg_hover>]
+^ Sets background color of slots in HEX-Color format
+^ Sets background color of slots on mouse hovering
+
+listcolors[<slot_bg_normal>;<slot_bg_hover>;<slot_border>]
+^ Sets background color of slots in HEX-Color format
+^ Sets background color of slots on mouse hovering
+^ Sets color of slots border
+
+listcolors[<slot_bg_normal>;<slot_bg_hover>;<slot_border>;<tooltip_bgcolor>;<tooltip_fontcolor>]
+^ Sets background color of slots in HEX-Color format
+^ Sets background color of slots on mouse hovering
+^ Sets color of slots border
+^ Sets background color of tooltips
+^ Sets font color of tooltips
+
image[<X>,<Y>;<W>,<H>;<texture name>]
^ Show an image
^ Position and size units are inventory slots
^ Show an inventory image of registered item/node
^ Position and size units are inventory slots
+bgcolor[<color>;<fullscreen>]
+^ Sets background color of formspec in HEX-Color format
+^ If true the background color is drawn fullscreen (does not effect the size of the formspec)
+
background[<X>,<Y>;<W>,<H>;<texture name>]
^ Use a background. Inventory rectangles are not drawn then.
^ Position and size units are inventory slots
^ Example for formspec 8x4 in 16x resolution: image shall be sized 8*16px x 4*16px
+background[<X>,<Y>;<W>,<H>;<texture name>;<auto_clip>]
+^ Use a background. Inventory rectangles are not drawn then.
+^ Position and size units are inventory slots
+^ Example for formspec 8x4 in 16x resolution: image shall be sized 8*16px x 4*16px
+^ If true the background is clipped to formspec size (x and y are used as offset values, w and h are ignored)
+
pwdfield[<X>,<Y>;<W>,<H>;<name>;<label>]
^ Textual password style field; will be sent to server when a button is clicked
^ x and y position the field relative to the top left of the menu
^ 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),
+^ listelements can be prepended by #color in hexadecimal format RRGGBB (only),
^ if you want a listelement to start with # write ##
textlist[<X>,<Y>;<W>,<H>;<name>;<listelem 1>,<listelem 2>,...,<listelem n>;<selected idx>;<transparent>]
^ 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
+^ listelements can be prepended by #RRGGBB (only) in hexadecimal format
^ if you want a listelement to start with # write ##
^ index to be selected within textlist
^ true/false draw transparent background
^ 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)
+^ color in HEX-Color format
dropdown[<X>,<Y>;<W>;<name>;<item 1>,<item 2>, ...,<item n>;<selected idx>]
^ show a dropdown field
^ fieldname data is transfered to lua
^ items to be shown in dropdown
^ index of currently selected dropdown item
-^ color in hexadecimal format RRGGBB
+^ color in hexadecimal format RRGGBB (only)
checkbox[<X>,<Y>;<name>;<label>;<selected>]
^ show a checkbox
- "nodemeta:<X>,<Y>,<Z>": Any node metadata
- "detached:<name>": A detached inventory
+HEX-Color
+---------
+#RGB
+^ defines a color in hexadecimal format
+#RGBA
+^ defines a color in hexadecimal format and alpha channel
+#RRGGBB
+^ defines a color in hexadecimal format
+#RRGGBBAA
+^ defines a color in hexadecimal format and alpha channel
+
Vector helpers
---------------
vector.new([x[, y, z]]) -> vector
vector.length(v) -> number
vector.normalize(v) -> vector
vector.round(v) -> vector
-vector.equal(v1, v2) -> bool
+vector.equals(v1, v2) -> bool
+For the folowing x can be either a vector or a number.
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={})
^ Convert position to a printable string
minetest.string_to_pos(string) -> position
^ Same but in reverse
-minetest.formspec_escape(string) -> string
-^ escapes characters like [, ], and \ that can not be used in formspecs
+^ escapes characters [ ] \ , ; that can not be used in formspecs
+minetest.is_yes(arg)
+^ returns whether arg can be interpreted as yes
minetest namespace reference
-----------------------------
Global callback registration functions: (Call these only at load time)
minetest.register_globalstep(func(dtime))
-^ Called every server step, usually interval of 0.05s
+^ Called every server step, usually interval of 0.1s
minetest.register_on_shutdown(func())
^ Called before server shutdown
^ WARNING: If the server terminates abnormally (i.e. crashes), the registered
^ Called when a player joins the game
minetest.register_on_leaveplayer(func(ObjectRef))
^ Called when a player leaves the game
+minetest.register_on_cheat(func(ObjectRef, cheat))
+^ Called when a player cheats
+^ cheat: {type="moved_too_fast"/"interacted_too_far"/"finished_unknown_dig"/"dug_unbreakable"/"dug_too_fast"}
minetest.register_on_chat_message(func(name, message))
^ Called always when a player says something
minetest.register_on_player_receive_fields(func(player, formname, fields))
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
+minetest.register_on_craft(func(itemstack, player, old_craft_grid, craft_inv))
+^ Called when player crafts something
+^ itemstack is the output
+^ old_craft_grid contains the recipe (Note: the one in the inventory is cleared)
+^ craft_inv is the inventory with the crafting grid
+^ Return either an ItemStack, to replace the output, or nil, to not modify it
+minetest.register_craft_predict(func(itemstack, player, old_craft_grid, craft_inv))
+^ The same as before, except that it is called before the player crafts, to make
+^ craft prediction, and it should not change anything.
+minetest.register_on_protection_violation(func(pos, name))
+^ Called by builtin and mods when a player violates protection at a position
+ (eg, digs a node or punches a protected entity).
+^ The registered functions can be called using minetest.record_protection_violation
+^ The provided function should check that the position is protected by the mod
+ calling this function before it prints a message, if it does, to allow for
+ multiple protection mods.
Other registration functions:
minetest.register_chatcommand(cmd, chatcommand definition)
Setting-related:
minetest.setting_set(name, value)
minetest.setting_get(name) -> string or nil
+minetest.setting_setbool(name, value)
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.get_objects_inside_radius(pos, radius)
minetest.set_timeofday(val): val: 0...1; 0 = midnight, 0.5 = midday
minetest.get_timeofday()
+minetest.get_gametime(): returns the time, in seconds, since the world was created
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
^ Can be overridden to get different functionality (eg. dropping items on
ground)
-Rollbacks:
-minetest.rollback_get_last_node_actor(p, range, seconds) -> actor, p, seconds
+Rollback:
+minetest.rollback_get_node_actions(pos, range, seconds, limit) -> {{actor, pos, time, oldnode, newnode}, ...}
^ Find who has done something to a node, or near a node
^ actor: "player:<name>", also "liquid".
minetest.rollback_revert_actions_by(actor, seconds) -> bool, log messages
Defaults for the on_* item definition functions:
(These return the leftover itemstack)
-minetest.item_place_node(itemstack, placer, pointed_thing)
+minetest.item_place_node(itemstack, placer, pointed_thing, param2)
^ Place item as a node
+^ param2 overrides facedir and wallmounted param2
+^ returns itemstack, success
minetest.item_place_object(itemstack, placer, pointed_thing)
^ Place item as-is
-minetest.item_place(itemstack, placer, pointed_thing)
+minetest.item_place(itemstack, placer, pointed_thing, param2)
^ Use one of the above based on what the item is.
^ Calls on_rightclick of pointed_thing.under if defined instead
^ Note: is not called when wielded item overrides on_place
+^ param2 overrides facedir and wallmounted param2
+^ returns itemstack, success
minetest.item_drop(itemstack, dropper, pos)
^ Drop the item
minetest.item_eat(hp_change, replace_with_item)
^ 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).
+ ^ and prob is the integer value from 0 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)
+minetest.place_schematic(pos, schematic, rotation, replacements)
^ 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.
+^ replacements = {{"oldname", "convert_to"}, ...}
Random:
minetest.get_connected_players() -> list of ObjectRefs
^ 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.parse_json(string[, nullvalue]) -> something
+^ Convert a string containing JSON data into the Lua equivalent
+^ nullvalue: returned in place of the JSON null; defaults to nil
+^ On success returns a table, a string, a number, a boolean or nullvalue
+^ On failure outputs an error message and returns nil
+^ Example: parse_json("[10, {\"a\":false}]") -> {[1] = 10, [2] = {a = false}}
minetest.serialize(table) -> string
^ Convert a table containing tables, strings, numbers, booleans and nils
into string form readable by minetest.deserialize
^ Example: deserialize('return { ["foo"] = "bar" }') -> {foo='bar'}
^ Example: deserialize('print("foo")') -> nil (function call fails)
^ error:[string "print("foo")"]:1: attempt to call global 'print' (a nil value)
+minetest.is_protected(pos, name) -> bool
+^ This function should be overriden by protection mods and should be used to
+ check if a player can interact at a position.
+^ This function should call the old version of itself if the position is not
+ protected by the mod.
+^ Example:
+ local old_is_protected = minetest.is_protected
+ function minetest.is_protected(pos, name)
+ if mymod:position_protected_from(pos, name) then
+ return true
+ end
+ return old_is_protected(pos, name)
+ end
+minetest.record_protection_violation(pos, name)
+^ This function calls functions registered with
+ minetest.register_on_protection_violation.
+minetest.rotate_and_place(itemstack, placer, pointed_thing, infinitestacks, orient_flags)
+^ Attempt to predict the desired orientation of the facedir-capable node
+ defined by itemstack, and place it accordingly (on-wall, on the floor, or
+ hanging from the ceiling). Stacks are handled normally if the infinitestacks
+ field is false or omitted (else, the itemstack is not changed). orient_flags
+ is an optional table containing extra tweaks to the placement code:
+ invert_wall: if true, place wall-orientation on the ground and ground-
+ orientation on the wall.
+ force_wall: if true, always place the node in wall orientation.
+ force_ceiling: if true, always place on the ceiling.
+ force_floor: if true, always place the node on the floor.
+
+ The above four options are mutually-exclusive; the last in the list takes
+ precedence over the first.
+
+ force_facedir: if true, forcably reset the facedir to north when placing on
+ the floor or ceiling
+
+minetest.rotate_node(itemstack, placer, pointed_thing)
+^ calls rotate_and_place() with infinitestacks set according to the state of
+ the creative mode setting, and checks for "sneak" to set the invert_wall
+ parameter.
Global objects:
minetest.env - EnvRef of the server environment and world.
^ 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
+- hud_set_hotbar_image(texturename)
+ ^ sets background image for hotbar
+- hud_set_hotbar_selected_image(texturename)
+ ^ sets image for selected item of hotbar
InvRef: Reference to an inventory
methods:
- is_empty(listname): return true if list is empty
- get_size(listname): get size of a list
- set_size(listname, size): set size of a list
+ ^ returns false on error (e.g. invalid listname or listsize)
- get_width(listname): get width of a list
- set_width(listname, width): set width of list; currently used for crafting
- get_stack(listname, i): get a copy of stack index i in list
methods:
- is_empty(): return true if stack is empty
- get_name(): returns item name (e.g. "default:stone")
+- set_name(itemname)
- get_count(): returns number of items on the stack
+- set_count(count)
- get_wear(): returns tool wear (0-65535), 0 for non-tools
+- set_wear(wear)
- get_metadata(): returns metadata (a string attached to an item stack)
+- set_metadata(metadata)
- clear(): removes all items from the stack, making it empty
- replace(item): replace the contents of this stack (item can also
be an itemstring or table)
- 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
+- set_lighting(light, p1, p2): Set the lighting within the VoxelManip to a uniform value
^ light is a table, {day=<0...15>, night=<0...15>}
^ To be used only by a VoxelManip object from minetest.get_mapgen_object
-- calc_lighting(): Calculate lighting within the VoxelManip
+ ^ (p1, p2) is the area in which lighting is set; defaults to the whole area if left out
+- get_light_data(): Gets the light data read into the VoxelManip object
+ ^ Returns an array (indicies 1 to volume) of integers ranging from 0 to 255
+ ^ Each value is the bitwise combination of day and night light values (0..15 each)
+ ^ light = day + (night * 16)
+- set_light_data(light_data): Sets the param1 (light) contents of each node in the VoxelManip
+ ^ expects lighting data in the same format that get_light_data() returns
+- calc_lighting(p1, p2): Calculate lighting within the VoxelManip
^ To be used only by a VoxelManip object from minetest.get_mapgen_object
+ ^ (p1, p2) is the area in which lighting is set; defaults to the whole area if left out
- update_liquids(): Update liquid flow
VoxelArea: A helper class for voxel areas
^ 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
+Settings: An interface to read config files in the format of minetest.conf
+- Can be created via Settings(filename)
+methods:
+- get(key) -> value
+- get_bool(key) -> boolean
+- set(key, value)
+- remove(key) -> success
+- get_names() -> {key1,...}
+- write() -> success
+ ^ write changes to file
+- to_table() -> {[key1]=value1,...}
+
Mapgen objects
---------------
A mapgen object is a construct used in map generation. Mapgen objects can be used by an on_generate
- on_activate(self, staticdata)
^ Called when the object is instantiated.
- on_step(self, dtime)
- ^ Called on every server tick (dtime is usually 0.05 seconds)
+ ^ Called on every server tick (dtime is usually 0.1 seconds)
- on_punch(self, puncher, time_from_last_punch, tool_capabilities, dir)
^ Called when somebody punches the object.
^ Note that you probably want to handle most punches using the
makes_footstep_sound = false,
automatic_rotate = false,
stepheight = 0,
+ automatic_face_movement_dir = 0.0,
+ ^ automatically set yaw to movement direction; offset in degrees; false to disable
}
Entity definition (register_entity)
eg. itemstack:take_item(); return itemstack
^ Otherwise, the function is free to do what it wants.
^ The default functions handle regular use cases.
+ after_use = func(itemstack, user, node, digparams),
+ ^ default: nil
+ ^ If defined, should return an itemstack and will be called instead of
+ wearing out the tool. If returns nil, does nothing.
+ If after_use doesn't exist, it is the same as:
+ function(itemstack, user, node, digparams)
+ itemstack:add_wear(digparams.wear)
+ return itemstack
+ end
}
Tile definition:
drawtype = "normal", -- See "Node drawtypes"
visual_scale = 1.0,
+ ^ Supported for drawtypes "plantlike", "signlike", "torchlike".
+ ^ For plantlike, the image will start at the bottom of the node; for the
+ ^ other drawtypes, the image will be centered on the node.
+ ^ Note that positioning for "torchlike" may still change.
tiles = {tile definition 1, def2, def3, def4, def5, def6},
^ Textures of node; +Y, -Y, +X, -X, +Z, -Z (old field name: tile_images)
^ List can be shortened to needed length
liquid_alternative_flowing = "", -- Flowing version of source liquid
liquid_alternative_source = "", -- Source version of flowing liquid
liquid_viscosity = 0, -- Higher viscosity = slower flow (max. 7)
- liquid_renewable = true, -- Can new liquid source be created by placing
+ liquid_renewable = true, -- Can new liquid source be created by placing two or more sources nearby?
freezemelt = "", -- water for snow/ice, ice/snow for water
leveled = 0, -- Block contain level in param2. value - default level, used for snow. Dont forget use "leveled" type nodebox
liquid_range = 8, -- number of flowing nodes arround source (max. 8)
- drowning = true, -- Player will drown in these
- two or more sources nearly?
+ drowning = 0, -- Player will take this amount of damage if no bubbles are left
light_source = 0, -- Amount of light emitted by node
damage_per_second = 0, -- If player is inside node, this damage is caused
node_box = {type="regular"}, -- See "Node boxes"
ore_type = "scatter", -- See "Ore types"
ore = "default:stone_with_coal",
wherein = "default:stone",
+ ^ a list of nodenames is supported too
clust_scarcity = 8*8*8,
^ Ore has a 1 out of clust_scarcity chance of spawning in a node
^ This value should be *MUCH* higher than your intuition might tell you!
schematic = {
size = {x=4, y=6, z=4},
data = {
- {name="cobble", param1=0, param2=0},
- {name="dirt_with_grass", param1=0, param2=0},
+ {name="cobble", param1=255, param2=0},
+ {name="dirt_with_grass", param1=255, param2=0},
...
}
},
^ See 'Schematic specifier' for details.
+ replacements = {{"oldname", "convert_to"}, ...},
flags = "place_center_x, place_center_z",
^ Flags for schematic decorations. See 'Schematic attributes'.
rotation = "90" --rotate schematic 90 degrees on placement
projects / dragonfireclient.git / blobdiff