* `disallowed_mapgen_settings= <comma-separated mapgen settings>`
e.g. `disallowed_mapgen_settings = mgv5_spflags`
These mapgen settings are hidden for this game in the world creation
- dialog and game start menu.
+ dialog and game start menu. Add `seed` to hide the seed input field.
* `disabled_settings = <comma-separated settings>`
e.g. `disabled_settings = enable_damage, creative_mode`
These settings are hidden for this game in the "Start game" tab
Representations of simple things
================================
-Position/vector
----------------
-
- {x=num, y=num, z=num}
+Vector (ie. a position)
+-----------------------
- Note: it is highly recommended to construct a vector using the helper function:
- vector.new(num, num, num)
+ vector.new(x, y, z)
-For helper functions see [Spatial Vectors].
+See [Spatial Vectors] for details.
`pointed_thing`
---------------
from 1).
* `pointed_thing.intersection_normal`: Unit vector, points outwards of the
selected selection box. This specifies which face is pointed at.
- Is a null vector `{x = 0, y = 0, z = 0}` when the pointer is inside the
- selection box.
+ Is a null vector `vector.zero()` when the pointer is inside the selection box.
Examples:
-* `'default:apple'`: 1 apple
-* `'default:dirt 5'`: 5 dirt
-* `'default:pick_stone'`: a new stone pickaxe
-* `'default:pick_wood 1 21323'`: a wooden pickaxe, ca. 1/3 worn out
+* `"default:apple"`: 1 apple
+* `"default:dirt 5"`: 5 dirt
+* `"default:pick_stone"`: a new stone pickaxe
+* `"default:pick_wood 1 21323"`: a wooden pickaxe, ca. 1/3 worn out
### Table format
An example: Make meat soup from any meat, any water and any bowl:
{
- output = 'food:meat_soup_raw',
+ output = "food:meat_soup_raw",
recipe = {
- {'group:meat'},
- {'group:water'},
- {'group:bowl'},
+ {"group:meat"},
+ {"group:water"},
+ {"group:bowl"},
},
- -- preserve = {'group:bowl'}, -- Not implemented yet (TODO)
+ -- preserve = {"group:bowl"}, -- Not implemented yet (TODO)
}
Another example: Make red wool from white wool and red dye:
{
- type = 'shapeless',
- output = 'wool:red',
- recipe = {'wool:white', 'group:dye,basecolor_red'},
+ type = "shapeless",
+ output = "wool:red",
+ recipe = {"wool:white", "group:dye,basecolor_red"},
}
Special groups
* `color`: A `ColorString`, which sets the stack's color.
* `palette_index`: If the item has a palette, this is used to get the
current color from the palette.
+* `count_meta`: Replace the displayed count with any string.
+* `count_alignment`: Set the alignment of the displayed count value. This is an
+ int value. The lowest 2 bits specify the alignment in x-direction, the 3rd and
+ 4th bit specify the alignment in y-direction:
+ 0 = default, 1 = left / up, 2 = middle, 3 = right / down
+ The default currently is the same as right/down.
+ Example: 6 = 2 + 1*4 = middle,up
Example:
Spatial Vectors
===============
-A spatial vector is similar to a position, but instead using
-absolute world coordinates, it uses *relative* coordinates, relative to
-no particular point.
-
-Internally, it is implemented as a table with the 3 fields
-`x`, `y` and `z`. Example: `{x = 0, y = 1, z = 0}`.
-However, one should *never* create a vector manually as above, such misbehavior
-is deprecated. The vector helpers set a metatable for the created vectors which
-allows indexing with numbers, calling functions directly on vectors and using
-operators (like `+`). Furthermore, the internal implementation might change in
+
+Minetest stores 3-dimensional spatial vectors in Lua as tables of 3 coordinates,
+and has a class to represent them (`vector.*`), which this chapter is about.
+For details on what a spatial vectors is, please refer to Wikipedia:
+https://en.wikipedia.org/wiki/Euclidean_vector.
+
+Spatial vectors are used for various things, including, but not limited to:
+
+* any 3D spatial vector (x/y/z-directions)
+* Euler angles (pitch/yaw/roll in radians) (Spatial vectors have no real semantic
+ meaning here. Therefore, most vector operations make no sense in this use case.)
+
+Note that they are *not* used for:
+
+* n-dimensional vectors where n is not 3 (ie. n=2)
+* arrays of the form `{num, num, num}`
+
+The API documentation may refer to spatial vectors, as produced by `vector.new`,
+by any of the following notations:
+
+* `(x, y, z)` (Used rarely, and only if it's clear that it's a vector.)
+* `vector.new(x, y, z)`
+* `{x=num, y=num, z=num}` (Even here you are still supposed to use `vector.new`.)
+
+Compatibility notes
+-------------------
+
+Vectors used to be defined as tables of the form `{x = num, y = num, z = num}`.
+Since Minetest 5.5.0, vectors additionally have a metatable to enable easier use.
+Note: Those old-style vectors can still be found in old mod code. Hence, mod and
+engine APIs still need to be able to cope with them in many places.
+
+Manually constructed tables are deprecated and highly discouraged. This interface
+should be used to ensure seamless compatibility between mods and the Minetest API.
+This is especially important to callback function parameters and functions overwritten
+by mods.
+Also, though not likely, the internal implementation of a vector might change in
the future.
-Old code might still use vectors without metatables, be aware of this!
+In your own code, or if you define your own API, you can, of course, still use
+other representations of vectors.
+
+Vectors provided by API functions will provide an instance of this class if not
+stated otherwise. Mods should adapt this for convenience reasons.
+
+Special properties of the class
+-------------------------------
+
+Vectors can be indexed with numbers and allow method and operator syntax.
All these forms of addressing a vector `v` are valid:
`v[1]`, `v[3]`, `v.x`, `v[1] = 42`, `v.y = 13`
+Note: Prefer letter over number indexing for performance and compatibility reasons.
Where `v` is a vector and `foo` stands for any function name, `v:foo(...)` does
the same as `vector.foo(v, ...)`, apart from deprecated functionality.
+`tostring` is defined for vectors, see `vector.to_string`.
+
The metatable that is used for vectors can be accessed via `vector.metatable`.
Do not modify it!
All `vector.*` functions allow vectors `{x = X, y = Y, z = Z}` without metatables.
Returned vectors always have a metatable set.
-For the following functions, `v`, `v1`, `v2` are vectors,
-`p1`, `p2` are positions,
+Common functions and methods
+----------------------------
+
+For the following functions (and subchapters),
+`v`, `v1`, `v2` are vectors,
+`p1`, `p2` are position vectors,
`s` is a scalar (a number),
vectors are written like this: `(x, y, z)`:
* `init`: If given starts looking for the vector at this string index.
* `vector.to_string(v)`:
* Returns a string of the form `"(x, y, z)"`.
+ * `tostring(v)` does the same.
* `vector.direction(p1, p2)`:
* Returns a vector of length 1 with direction `p1` to `p2`.
* If `p1` and `p2` are identical, returns `(0, 0, 0)`.
* Returns a scaled vector.
* Deprecated: If `s` is a vector: Returns the Schur quotient.
+Operators
+---------
+
Operators can be used if all of the involved vectors have metatables:
* `v1 == v2`:
* Returns whether `v1` and `v2` are identical.
* `v / s`:
* Returns `v` scaled by `1 / s`.
+Rotation-related functions
+--------------------------
+
For the following functions `a` is an angle in radians and `r` is a rotation
-vector ({x = <pitch>, y = <yaw>, z = <roll>}) where pitch, yaw and roll are
+vector (`{x = <pitch>, y = <yaw>, z = <roll>}`) where pitch, yaw and roll are
angles in radians.
* `vector.rotate(v, r)`:
* If `up` is omitted, the roll of the returned vector defaults to zero.
* Otherwise `direction` and `up` need to be vectors in a 90 degree angle to each other.
+Further helpers
+---------------
+
+There are more helper functions involving vectors, but they are listed elsewhere
+because they only work on specific sorts of vectors or involve things that are not
+vectors.
+
+For example:
+
+* `minetest.hash_node_position` (Only works on node positions.)
+* `minetest.dir_to_wallmounted` (Involves wallmounted param2 values.)
+
abm_min_max_y = true,
-- dynamic_add_media supports passing a table with options (5.5.0)
dynamic_add_media_table = true,
+ -- allows get_sky to return a table instead of separate values (5.6.0)
+ get_sky_as_table = true,
}
* `minetest.has_feature(arg)`: returns `boolean, missing_features`
This is due to the fact that JSON has two distinct array and object
values.
* Example: `write_json({10, {a = false}})`,
- returns `"[10, {\"a\": false}]"`
+ returns `'[10, {"a": false}]'`
* `minetest.serialize(table)`: returns a string
* Convert a table containing tables, strings, numbers, booleans and `nil`s
into string form readable by `minetest.deserialize`
- * Example: `serialize({foo='bar'})`, returns `'return { ["foo"] = "bar" }'`
+ * Example: `serialize({foo="bar"})`, returns `'return { ["foo"] = "bar" }'`
* `minetest.deserialize(string[, safe])`: returns a table
* Convert a string returned by `minetest.serialize` into a table
* `string` is loaded in an empty sandbox environment.
value of `safe`. It is fine to serialize then deserialize user-provided
data, but directly providing user input to deserialize is always unsafe.
* Example: `deserialize('return { ["foo"] = "bar" }')`,
- returns `{foo='bar'}`
+ returns `{foo="bar"}`
* Example: `deserialize('print("foo")')`, returns `nil`
(function call fails), returns
`error:[string "print("foo")"]:1: attempt to call global 'print' (a nil value)`
`AreaStore`
-----------
-A fast access data structure to store areas, and find areas near a given
-position or area.
-Every area has a `data` string attribute to store additional information.
-You can create an empty `AreaStore` by calling `AreaStore()`, or
-`AreaStore(type_name)`. The mod decides where to save and load AreaStore.
-If you chose the parameter-less constructor, a fast implementation will be
-automatically chosen for you.
+AreaStore is a data structure to calculate intersections of 3D cuboid volumes
+and points. The `data` field (string) may be used to store and retrieve any
+mod-relevant information to the specified area.
+
+Despite its name, mods must take care of persisting AreaStore data. They may
+use the provided load and write functions for this.
+
### Methods
-* `get_area(id, include_borders, include_data)`
+* `AreaStore(type_name)`
+ * Returns a new AreaStore instance
+ * `type_name`: optional, forces the internally used API.
+ * Possible values: `"LibSpatial"` (default).
+ * When other values are specified, or SpatialIndex is not available,
+ the custom Minetest functions are used.
+* `get_area(id, include_corners, include_data)`
* Returns the area information about the specified ID.
* Returned values are either of these:
nil -- Area not found
- true -- Without `include_borders` and `include_data`
+ true -- Without `include_corners` and `include_data`
{
- min = pos, max = pos -- `include_borders == true`
+ min = pos, max = pos -- `include_corners == true`
data = string -- `include_data == true`
}
-* `get_areas_for_pos(pos, include_borders, include_data)`
+* `get_areas_for_pos(pos, include_corners, include_data)`
* Returns all areas as table, indexed by the area ID.
* Table values: see `get_area`.
-* `get_areas_in_area(edge1, edge2, accept_overlap, include_borders, include_data)`
- * Returns all areas that contain all nodes inside the area specified by `edge1`
- and `edge2` (inclusive).
+* `get_areas_in_area(corner1, corner2, accept_overlap, include_corners, include_data)`
+ * Returns all areas that contain all nodes inside the area specified by`
+ `corner1 and `corner2` (inclusive).
* `accept_overlap`: if `true`, areas are returned that have nodes in
common (intersect) with the specified area.
* Returns the same values as `get_areas_for_pos`.
-* `insert_area(edge1, edge2, data, [id])`: inserts an area into the store.
+* `insert_area(corner1, corner2, data, [id])`: inserts an area into the store.
* Returns the new area's ID, or nil if the insertion failed.
- * The (inclusive) positions `edge1` and `edge2` describe the area.
+ * The (inclusive) positions `corner1` and `corner2` describe the area.
* `data` is a string stored with the area.
* `id` (optional): will be used as the internal area ID if it is an unique
number between 0 and 2^32-2.
-* `reserve(count)`: reserves resources for at most `count` many contained
- areas.
- Only needed for efficiency, and only some implementations profit.
+* `reserve(count)`
+ * Requires SpatialIndex, no-op function otherwise.
+ * Reserves resources for `count` many contained areas to improve
+ efficiency when working with many area entries. Additional areas can still
+ be inserted afterwards at the usual complexity.
* `remove_area(id)`: removes the area with the given id from the store, returns
success.
* `set_cache_params(params)`: sets params for the included prefiltering cache.
* `hud_get(id)`: gets the HUD element definition structure of the specified ID
* `hud_set_flags(flags)`: sets specified HUD flags of player.
* `flags`: A table with the following fields set to boolean values
- * hotbar
- * healthbar
- * crosshair
- * wielditem
- * breathbar
- * minimap
- * minimap_radar
+ * `hotbar`
+ * `healthbar`
+ * `crosshair`
+ * `wielditem`
+ * `breathbar`
+ * `minimap`: Modifies the client's permission to view the minimap.
+ The client may locally elect to not view the minimap.
+ * `minimap_radar`: is only usable when `minimap` is true
+ * `basic_debug`: Allow showing basic debug info that might give a gameplay advantage.
+ This includes map seed, player position, look direction, the pointed node and block bounds.
+ Does not affect players with the `debug` privilege.
* If a flag equals `nil`, the flag is not modified
- * `minimap`: Modifies the client's permission to view the minimap.
- The client may locally elect to not view the minimap.
- * `minimap_radar` is only usable when `minimap` is true
* `hud_get_flags()`: returns a table of player HUD flags with boolean values.
* See `hud_set_flags` for a list of flags that can be toggled.
* `hud_set_hotbar_itemcount(count)`: sets number of items in builtin hotbar
* `"plain"`: Uses 0 textures, `bgcolor` used
* `clouds`: Boolean for whether clouds appear in front of `"skybox"` or
`"plain"` custom skyboxes (default: `true`)
-* `get_sky()`: returns base_color, type, table of textures, clouds.
-* `get_sky_color()`: returns a table with the `sky_color` parameters as in
- `set_sky`.
+* `get_sky(as_table)`:
+ * `as_table`: boolean that determines whether the deprecated version of this
+ function is being used.
+ * `true` returns a table containing sky parameters as defined in `set_sky(sky_parameters)`.
+ * Deprecated: `false` or `nil` returns base_color, type, table of textures,
+ clouds.
+* `get_sky_color()`:
+ * Deprecated: Use `get_sky(as_table)` instead.
+ * returns a table with the `sky_color` parameters as in `set_sky`.
* `set_sun(sun_parameters)`:
* Passing no arguments resets the sun to its default values.
* `sun_parameters` is a table with the following optional fields:
-- for more info) by using a '_' prefix
}
-Collision info passed to `on_step`:
+Collision info passed to `on_step` (`moveresult` argument):
{
touching_ground = boolean,
},
...
}
+ -- `collisions` does not contain data of unloaded mapblock collisions
+ -- or when the velocity changes are negligibly small
}
ABM (ActiveBlockModifier) definition
### Shaped
{
- output = 'default:pick_stone',
+ output = "default:pick_stone",
recipe = {
- {'default:cobble', 'default:cobble', 'default:cobble'},
- {'', 'default:stick', ''},
- {'', 'default:stick', ''}, -- Also groups; e.g. 'group:crumbly'
+ {"default:cobble", "default:cobble", "default:cobble"},
+ {"", "default:stick", ""},
+ {"", "default:stick", ""}, -- Also groups; e.g. "group:crumbly"
},
replacements = <list of item pairs>,
-- replacements: replace one input item with another item on crafting
{
type = "shapeless",
- output = 'mushrooms:mushroom_stew',
+ output = "mushrooms:mushroom_stew",
recipe = {
"mushrooms:bowl",
"mushrooms:mushroom_brown",
projects / dragonfireclient.git / blobdiff