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Update lua_api.html

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rubenwardy 2015-08-12 14:54:11 +01:00
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@ -9,7 +9,10 @@ layout: default
<li><a href="#programming-in-lua">Programming in Lua</a></li>
<li><a href="#startup">Startup</a></li>
<li><a href="#paths">Paths</a></li>
<li><a href="#games">Games</a></li>
<li><a href="#games">Games</a><ul>
<li><a href="#menu-images">Menu images</a></li>
</ul>
</li>
<li><a href="#mod-load-path">Mod load path</a></li>
<li><a href="#mod-load-path-for-world-specific-games">Mod load path for world-specific games</a></li>
<li><a href="#modpack-support">Modpack support</a></li>
@ -241,38 +244,42 @@ layout: default
<li><a href="#methods_3">Methods</a></li>
</ul>
</li>
<li><a href="#itemstack_1">ItemStack</a><ul>
<li><a href="#areastore">AreaStore</a><ul>
<li><a href="#methods_4">Methods</a></li>
</ul>
</li>
<li><a href="#pseudorandom">PseudoRandom</a><ul>
<li><a href="#itemstack_1">ItemStack</a><ul>
<li><a href="#methods_5">Methods</a></li>
</ul>
</li>
<li><a href="#pcgrandom">PcgRandom</a><ul>
<li><a href="#pseudorandom">PseudoRandom</a><ul>
<li><a href="#methods_6">Methods</a></li>
</ul>
</li>
<li><a href="#perlinnoise">PerlinNoise</a><ul>
<li><a href="#pcgrandom">PcgRandom</a><ul>
<li><a href="#methods_7">Methods</a></li>
</ul>
</li>
<li><a href="#perlinnoisemap">PerlinNoiseMap</a><ul>
<li><a href="#perlinnoise">PerlinNoise</a><ul>
<li><a href="#methods_8">Methods</a></li>
</ul>
</li>
<li><a href="#voxelmanip">VoxelManip</a><ul>
<li><a href="#perlinnoisemap">PerlinNoiseMap</a><ul>
<li><a href="#methods_9">Methods</a></li>
</ul>
</li>
<li><a href="#voxelarea">VoxelArea</a><ul>
<li><a href="#voxelmanip">VoxelManip</a><ul>
<li><a href="#methods_10">Methods</a></li>
</ul>
</li>
<li><a href="#settings">Settings</a><ul>
<li><a href="#voxelarea">VoxelArea</a><ul>
<li><a href="#methods_11">Methods</a></li>
</ul>
</li>
<li><a href="#settings">Settings</a><ul>
<li><a href="#methods_12">Methods</a></li>
</ul>
</li>
</ul>
</li>
<li><a href="#mapgen-objects">Mapgen objects</a><ul>
@ -329,7 +336,7 @@ source code patches to <a href="&#109;&#97;&#105;&#108;&#116;&#111;&#58;&#99;&#1
<ul>
<li>More information at <a href="http://www.minetest.net/">http://www.minetest.net/</a></li>
<li>Developer Wiki: <a href="http://dev.minetest.net/">http://dev.minetest.net/</a></li>
</ul>This page was last updated 08/July/2015.<br />See <a href="https://github.com/minetest/minetest/blob/master/doc/lua_api.txt">doc/lua_api.txt</a> for the latest version (in plaintext).<br />Generated using <a href="https://github.com/rubenwardy/minetest_modding_book/blob/gh-pages/update_lua_api.py">a Python script</a>.<h2 id="programming-in-lua">Programming in Lua</h2>
</ul>This page was last updated 12/August/2015.<br />See <a href="https://github.com/minetest/minetest/blob/master/doc/lua_api.txt">doc/lua_api.txt</a> for the latest version (in plaintext).<br />Generated using <a href="https://github.com/rubenwardy/minetest_modding_book/blob/gh-pages/update_lua_api.py">a Python script</a>.<h2 id="programming-in-lua">Programming in Lua</h2>
<p>If you have any difficulty in understanding this, please read
<a href="http://www.lua.org/pil/">Programming in Lua</a>.</p>
<h2 id="startup">Startup</h2>
@ -379,6 +386,11 @@ the <code>init.lua</code> scripts in a shared environment.</p>
</code></pre>
<p>The game directory can contain the file minetest.conf, which will be used
to set default settings when running the particular game.</p>
<h3 id="menu-images">Menu images</h3>
<p>Games can provide custom main menu images. They are put inside a <code>menu</code> directory inside the game directory.</p>
<p>The images are named <code>$identifier.png</code>, where <code>$identifier</code> is one of <code>overlay,background,footer,header</code>.
If you want to specify multiple images for one identifier, add additional images named like <code>$identifier.$n.png</code>, with an ascending number $n starting with 1,
and a random image will be chosen from the provided ones.</p>
<h2 id="mod-load-path">Mod load path</h2>
<p>Generic:</p>
<ul>
@ -2100,6 +2112,7 @@ or string form, a ColorString (defined above):
</li>
<li><code>minetest.register_on_chat_message(func(name, message))</code><ul>
<li>Called always when a player says something</li>
<li>Return <code>true</code> to mark the message as handled, which means that it will not be sent to other players</li>
</ul>
</li>
<li><code>minetest.register_on_player_receive_fields(func(player, formname, fields))</code><ul>
@ -2626,7 +2639,8 @@ and <code>minetest.auth_reload</code> call the authetification handler.</p>
</ul>
<h3 id="server">Server</h3>
<ul>
<li><code>minetest.request_shutdown()</code>: request for server shutdown</li>
<li><code>minetest.request_shutdown([message],[reconnect])</code>: request for server shutdown. Will display <code>message</code> to clients,
and <code>reconnect</code> == true displays a reconnect button.</li>
<li><code>minetest.get_server_status()</code>: returns server status string</li>
</ul>
<h3 id="bans">Bans</h3>
@ -2650,7 +2664,7 @@ and <code>minetest.auth_reload</code> call the authetification handler.</p>
<p><code>minetest.add_particlespawner(particlespawner definition)</code></p>
<ul>
<li>Add a <code>ParticleSpawner</code>, an object that spawns an amount of particles over <code>time</code> seconds</li>
<li>Returns an <code>id</code></li>
<li>Returns an <code>id</code>, and -1 if adding didn't succeed</li>
<li><code>Deprecated: minetest.add_particlespawner(amount, time,
minpos, maxpos,
minvel, maxvel,
@ -2811,6 +2825,9 @@ and <code>minetest.auth_reload</code> call the authetification handler.</p>
<li>
<p><code>minetest.is_protected(pos, name)</code>: returns boolean</p>
<ul>
<li>Returns true, if player <code>name</code> shouldn't be abled to dig at <code>pos</code> or do other
actions, defineable by mods, due to some mod-defined ownership-like concept.
Returns false or nil, if the player is allowed to do such actions.</li>
<li>This function should be overridden by protection mods and should be used to
check if a player can interact at a position.</li>
<li>This function should call the old version of itself if the position is not
@ -3059,6 +3076,7 @@ Can be gotten via <code>minetest.get_node_timer(pos)</code>.</p>
<h5 id="player-only-no-op-for-other-objects">Player-only (no-op for other objects)</h5>
<ul>
<li><code>get_player_name()</code>: returns <code>""</code> if is not a player</li>
<li><code>get_player_velocity()</code>: returns <code>nil</code> if is not a player otherwise a table {x, y, z} representing the player's instantaneous velocity in nodes/s</li>
<li><code>get_look_dir()</code>: get camera direction as a unit vector</li>
<li><code>get_look_pitch()</code>: pitch in radians</li>
<li><code>get_look_yaw()</code>: yaw in radians (wraps around pretty randomly as of now)</li>
@ -3220,11 +3238,35 @@ Can be gotten via <code>minetest.get_node_timer(pos)</code>.</p>
</ul>
</li>
</ul>
<h3 id="areastore"><code>AreaStore</code></h3>
<p>A fast access data structure to store areas, and find areas near a given position or area.
Every area has a <code>data</code> string attribute to store additional information.
You can create an empty <code>AreaStore</code> by calling <code>AreaStore()</code>, or <code>AreaStore(type_name)</code>.
If you chose the parameter-less constructor, a fast implementation will be automatically chosen for you.</p>
<h4 id="methods_4">Methods</h4>
<ul>
<li><code>get_area(id, include_borders, include_data)</code>: returns the area with the id <code>id</code>. (optional) Boolean values <code>include_borders</code> and <code>include_data</code> control what's copied.</li>
<li><code>get_areas_for_pos(pos, include_borders, include_data)</code>: returns all areas that contain the position <code>pos</code>. (optional) Boolean values <code>include_borders</code> and <code>include_data</code> control what's copied.</li>
<li><code>get_areas_in_area(edge1, edge2, accept_overlap, include_borders, include_data)</code>: returns all areas that contain all nodes inside the area specified by <code>edge1</code> and <code>edge2</code> (inclusive). If <code>accept_overlap</code> is true, also areas are returned that have nodes in common with the specified area. (optional) Boolean values <code>include_borders</code> and <code>include_data</code> control what's copied.</li>
<li><code>insert_area(edge1, edge2, data)</code>: inserts an area into the store. Returns the id if successful, nil otherwise. The (inclusive) positions <code>edge1</code> and <code>edge2</code> describe the area, <code>data</code>
is a string stored with the area.</li>
<li><code>reserve(count)</code>: reserves resources for at most <code>count</code> many contained areas. Only needed for efficiency, and only some implementations profit.</li>
<li><code>remove_area(id)</code>: removes the area with the given id from the store, returns success.</li>
<li><code>set_cache_params(params)</code>: sets params for the included prefiltering cache. Calling invalidates the cache, so that its elements have to be newly generated.<ul>
<li><code>params</code>:
{
enabled = boolean, -- whether to enable, default true
block_radius = number, -- the radius (in nodes) of the areas the cache generates prefiltered lists for, minimum 16, default 64
limit = number, -- the cache's size, minimum 20, default 1000
}</li>
</ul>
</li>
</ul>
<h3 id="itemstack_1"><code>ItemStack</code></h3>
<p>An <code>ItemStack</code> is a stack of items.</p>
<p>It can be created via <code>ItemStack(x)</code>, where x is an <code>ItemStack</code>,
an itemstring, a table or <code>nil</code>.</p>
<h4 id="methods_4">Methods</h4>
<h4 id="methods_5">Methods</h4>
<ul>
<li><code>is_empty()</code>: Returns <code>true</code> if stack is empty.</li>
<li><code>get_name()</code>: Returns item name (e.g. <code>"default:stone"</code>).</li>
@ -3264,7 +3306,7 @@ an itemstring, a table or <code>nil</code>.</p>
<p>A 16-bit pseudorandom number generator.
Uses a well-known LCG algorithm introduced by K&amp;R.</p>
<p>It can be created via <code>PseudoRandom(seed)</code>.</p>
<h4 id="methods_5">Methods</h4>
<h4 id="methods_6">Methods</h4>
<ul>
<li><code>next()</code>: return next integer random number [<code>0</code>...<code>32767</code>]</li>
<li><code>next(min, max)</code>: return next integer random number [<code>min</code>...<code>max</code>]<ul>
@ -3277,7 +3319,7 @@ Uses a well-known LCG algorithm introduced by K&amp;R.</p>
<p>A 32-bit pseudorandom number generator.
Uses PCG32, an algorithm of the permuted congruential generator family, offering very strong randomness.</p>
<p>It can be created via <code>PcgRandom(seed)</code> or <code>PcgRandom(seed, sequence)</code>.</p>
<h4 id="methods_6">Methods</h4>
<h4 id="methods_7">Methods</h4>
<ul>
<li><code>next()</code>: return next integer random number [<code>-2147483648</code>...<code>2147483647</code>]</li>
<li><code>next(min, max)</code>: return next integer random number [<code>min</code>...<code>max</code>]</li>
@ -3293,7 +3335,7 @@ It can be created via <code>PerlinNoise(seed, octaves, persistence, scale)</code
or <code>PerlinNoise(noiseparams)</code>.
Alternatively with <code>minetest.get_perlin(seeddiff, octaves, persistence, scale)</code>
or <code>minetest.get_perlin(noiseparams)</code>.</p>
<h4 id="methods_7">Methods</h4>
<h4 id="methods_8">Methods</h4>
<ul>
<li><code>get2d(pos)</code>: returns 2D noise value at <code>pos={x=,y=}</code></li>
<li><code>get3d(pos)</code>: returns 3D noise value at <code>pos={x=,y=,z=}</code></li>
@ -3307,7 +3349,7 @@ for 2D noise, and it must be must be larger than 1 for 3D noise (otherwise
<code>nil</code> is returned).</p>
<p>For each of the functions with an optional <code>buffer</code> parameter: If <code>buffer</code> is not
nil, this table will be used to store the result instead of creating a new table.</p>
<h4 id="methods_8">Methods</h4>
<h4 id="methods_9">Methods</h4>
<ul>
<li><code>get2dMap(pos)</code>: returns a <code>&lt;size.x&gt;</code> times <code>&lt;size.y&gt;</code> 2D array of 2D noise
with values starting at <code>pos={x=,y=}</code></li>
@ -3333,7 +3375,7 @@ nil, this table will be used to store the result instead of creating a new table
<p>An interface to the <code>MapVoxelManipulator</code> for Lua.</p>
<p>It can be created via <code>VoxelManip()</code> or <code>minetest.get_voxel_manip()</code>.
The map will be pre-loaded if two positions are passed to either.</p>
<h4 id="methods_9">Methods</h4>
<h4 id="methods_10">Methods</h4>
<ul>
<li><code>read_from_map(p1, p2)</code>: Reads a chunk of map from the map containing the
region formed by <code>p1</code> and <code>p2</code>.<ul>
@ -3395,7 +3437,7 @@ The map will be pre-loaded if two positions are passed to either.</p>
<p>A helper class for voxel areas.
It can be created via <code>VoxelArea:new{MinEdge=pmin, MaxEdge=pmax}</code>.
The coordinates are <em>inclusive</em>, like most other things in Minetest.</p>
<h4 id="methods_10">Methods</h4>
<h4 id="methods_11">Methods</h4>
<ul>
<li><code>getExtent()</code>: returns a 3D vector containing the size of the area formed by
<code>MinEdge</code> and <code>MaxEdge</code></li>
@ -3419,7 +3461,7 @@ The coordinates are <em>inclusive</em>, like most other things in Minetest.</p>
<h3 id="settings"><code>Settings</code></h3>
<p>An interface to read config files in the format of <code>minetest.conf</code>.</p>
<p>It can be created via <code>Settings(filename)</code>.</p>
<h4 id="methods_11">Methods</h4>
<h4 id="methods_12">Methods</h4>
<ul>
<li><code>get(key)</code>: returns a value</li>
<li><code>get_bool(key)</code>: returns a boolean</li>
@ -3700,8 +3742,13 @@ minetest.spawn_tree(pos,apple_tree)
<ul>
<li><code>"image.png"</code></li>
<li><code>{name="image.png", animation={Tile Animation definition}}</code></li>
<li><code>{name="image.png", backface_culling=bool}</code><ul>
<li>backface culling only supported in special tiles</li>
<li><code>{name="image.png", backface_culling=bool, tileable_vertical=bool,
tileable_horizontal=bool}</code><ul>
<li>backface culling only supported in special tiles.</li>
<li>tileable flags are info for shaders, how they should treat texture
when displacement mapping is used
Directions are from the point of view of the tile texture,
not the node it's on</li>
</ul>
</li>
<li>deprecated, yet still supported field names:<ul>
@ -3970,7 +4017,9 @@ minetest.spawn_tree(pos,apple_tree)
-- ^ 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.
-- ^ Node that the decoration only spawns next to.
-- ^ The neighbours checked are the 8 nodes horizontally surrounding the lowest node of the
-- ^ decoration, and the 8 nodes horizontally surrounding the ground node below the decoration.
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.