lua_apidoc/functions.rst
2019-04-14 12:32:18 +02:00

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=========
Functions
=========
**Functions** allow to manipulate and control the server, or alter internal structures and entities.
Modules
=======
et.RegisterModname( modname )
-----------------------------
Registers a descriptive name for this mod.
* **modname** is the name to register the Lua module.
vmnumber = et.FindSelf()
------------------------
Returns the assigned Lua VM slot number.
* **vmnumber** is the returned slot number assigned to this Lua VM.
modname, signature = et.FindMod( vmnumber )
-------------------------------------------
Returns the name and SHA1 signature for the mod loaded in a VM slot.
* **vmnumber** is the VM slot number of the Lua module.
* **modname, signature** are the returned registered module's name and SHA-1 signature. Returns **nil, nil** if the VM slot is invalid.
success = et.IPCSend( vmnumber, message )
-----------------------------------------
Sends a message string to the mod in the another VM slot.
* **vmnumber** is the VM slot number of the Lua module to send a message to.
* **message** is the message to sent to the Lua module.
Returns 1 if the message is sent successfully, and 0 if it fails.
.. important:: The mod receiving message must have an `et_IPCReceive() <functions.html#et-ipcreceive-vmnumber-message>`__ callback.
.. note:: Data cannot be received and sent back in the same server frame.
et_IPCReceive( vmnumber, message )
----------------------------------
Called when another module sends an `et.IPCSend() <functions.html#success-et-ipcsend-vmnumber-message>`__ message to this module.
* **vmnumber** is the VM slot number of the sender.
* **message** is the message sent.
.. important:: The sender module must be loaded earlier in the `lua_modules <cvars.html#lua-modules>`__ cvar, otherwise the receiver module cannot find it.
.. tip:: See the `Inter Process Communication (IPC) <sample.html#inter-process-communication-ipc>`__ sample code for an example of communication between different loaded Lua modules.
Printing
========
et.G_Print( text )
------------------
Prints text to the server console.
* **text** is the printed string.
et.G_LogPrint( text )
---------------------
Prints text to the server console and writes it to the server log.
* **text** is the printed and logged string.
Argument handling
=================
These functions are to be used within the `command callback <callbacks.html#commands>`__ functions.
args = et.ConcatArgs( index )
-----------------------------
Returns all arguments beginning concatenated into a single string.
* **index** is the index of the first argument in the concatenated string.
* **args** is the returned concatenated string.
argcount = et.trap_Argc()
-------------------------
Returns the number of command line arguments in the server command.
* **argcount** is the returned count of arguments.
arg = et.trap_Argv( index )
---------------------------
Returns the contents of the command line argument.
* **index** is the index of the argument to return.
* **arg** is the returned argument.
Cvars
=====
cvarvalue = et.trap_Cvar_Get( name )
------------------------------------
Returns the value of the given cvar.
* **name** is the name of the cvar.
* **cvarvalue** is the returned string containing the value. If there is no cvar with the given name, the returning string has zero length.
et.trap_Cvar_Set( name, cvarvalue )
-----------------------------------
Sets value to a cvar.
* **name** is the name of the cvar to set.
* **cvarvalue** is the new value for the cvar.
Configstrings
=============
configstring = et.trap_GetConfigstring( index )
-----------------------------------------------
Returns content of the configstring index.
* **index** is the index of the configstring. See `et.CS_* constants <constants.html#cs-constants>`__ for possible values.
* **configstring** is the returned string containing the full configstring.
et.trap_SetConfigstring( index, value )
---------------------------------------
Sets the full configstring.
* **index** is the configstring index. See `et.CS_* constants <constants.html#cs-constants>`__ for possible values.
* **value** is the full configstring to set.
Server
======
et.trap_SendConsoleCommand( when, command )
-------------------------------------------
Sends command to the server console.
* **when** tells when the command is executed. See `et.EXEC_* constants <constants.html#exec-constants>`__ for possible values.
* **command** is the full command to execute.
Clients
=======
et.trap_SendServerCommand( clientnum, command )
-----------------------------------------------
Sends the command command to the client clientnum. If clientnum is `-1`, the command is broadcast to all clients.
.. tip:: See `SendServerCommand() <misc.html#sendservercommand>`__ for a detailed example usage of possible commands.
et.trap_DropClient( clientnum, reason, bantime )
-------------------------------------------------
Disconnects client from the server.
* **clientnum** is the slot number of the client.
* **reason** is the descriptive reason for the kick which is reported to the client.
* **bantime** is the length of the ban in seconds.
clientnum = et.ClientNumberFromString( string )
-----------------------------------------------
Searches for one partial match with player name.
* **string** is a pattern to match against client names.
* **clientnum** is the returned client slot number if one match is found, otherwise **nil** is returned (none or more than one match).
et.G_Say( clientNum, mode, text )
---------------------------------
Sends a chat command on behalf of client.
* **clientnum** is the slot number of the client.
* **mode** is the broadcast mode. See `et.SAY_* constants <constants.html#say-constants>`__.
* **text** is the chat text.
et.MutePlayer( clientnum, duration, reason )
--------------------------------------------
Mutes the specified player.
* **clientnum** is the slot number of the client to mute.
* **duration** is the optional duration of the mute in seconds.
* **reason** is the optional reason of the mute.
et.UnmutePlayer( clientnum )
----------------------------
Unmutes the specified player.
* **clientnum** is the slot number of the client to unmute.
Userinfo
========
userinfo = et.trap_GetUserinfo( clientNum )
-------------------------------------------
Returns the userinfo string of a client.
* **clientnum** is the slot number of the client.
* **userinfo** is the returned string of the specified client.
et.trap_SetUserinfo( clientnum, userinfo )
------------------------------------------
Sets the userinfo string of the client to the specified userinfo.
* **clientnum** is the slot number of the client.
* **userinfo** is the userinfo string that replaces the current userinfo.
.. note:: The `et.ClientUserinfoChanged() <#et-clientuserinfochanged-clientnum>`__ function must be called after this function for the changes to take effect.
et.ClientUserinfoChanged( clientnum )
-------------------------------------
Loads the new userinfo string of the client and sets the client settings to match it.
* **clientnum** is the slot number of the client.
String utility
==============
newinfostring = et.Info_RemoveKey( infostring, key )
----------------------------------------------------
Removes a key and its associated value from an infostring.
* **infostring** is the infostring from which to remove the key.
* **key** is the key to remove.
* **newinfostring** is the returned modified infostring without the key.
newinfostring = et.Info_SetValueForKey( infostring, key, value )
----------------------------------------------------------------
Sets a value in an infostring.
* **infostring** is the original infostring.
* **key** is the key to set.
* **value** is the value to set to the key. If empty, the key is removed from the infostring.
* **newinfostring** is the returned modified infostring.
keyvalue = et.Info_ValueForKey( infostring, key )
-------------------------------------------------
Returns a value from an infostring.
* **infostring** is the infostring from where to search the key.
* **key** is the key which value is returned.
* **keyvalue** is the returned value from the searched key. If key is not present in the infostring, an empty string is returned.
cleanstring = et.Q_CleanStr( string )
-------------------------------------
Returns string stripped of all color codes and special characters.
* **string** is the string to clean.
* **cleanstring** is the returned cleaned string.
Filesystem
==========
fd, len = et.trap_FS_FOpenFile( filename, mode )
------------------------------------------------
Opens a file in the local file system.
* **filename** is the name of the file to open. The file is opened under the current working directory and absolute paths will not work.
* **mode** is the access mode the file is opened. See `et.FS_* constants <constants.html#fs-constants>`__ for possible values.
* **fd, len** are returned descriptor of the file and the length of the file. On error, len returns **-1**.
filedata = et.trap_FS_Read( fd, count )
---------------------------------------
Reads from an open file.
* **fd** is the descriptor of the file to read.
* **count** is the amount of bytes to read.
* **filedata** is the returned value that have the read bytes.
count = et.trap_FS_Write( filedata, count, fd )
-----------------------------------------------
Writes at the end of an open file.
* **filedata** is a block of bytes to write.
* **count** is the size of the block to write.
* **fd** is the descriptor of the file.
* **count** is the returned amount of bytes written to the file.
et.trap_FS_FCloseFile( fd )
---------------------------
Closes an opened file.
* **fd** is the descriptor of the opened file.
et.trap_FS_Rename( oldname, newname )
-------------------------------------
Renames a file in the local file system.
* **oldname** is the name of the file to rename.
* **newname** is the name the old file name is changed to.
filelist = et.trap_FS_GetFileList( dirname, fileextension )
----------------------------------------------------------------
Retrieves list of files from a directory.
* **dirname** is the name of the directory.
* **filextension** is the file extension of file names to retrieve.
* **filelist** is the returned array of file names strings.
Indexes
=======
soundindex = et.G_SoundIndex( filename )
----------------------------------------
Returns the index to the searched soundfile.
* **filename** is the sound file name that is searched.
* **soundindex** is the returned string index that includes the filename or 0 if not found.
modelindex = et.G_ModelIndex( filename )
----------------------------------------
Returns the index to the searched model.
* **filename** is the name that is searched.
* **modelindex** is the returned string index that included the filename or 0 if not found.
Sound
=====
et.G_globalSound( sound )
-------------------------
Plays a sound to all connected clients.
* **sound** is the name of the sound to play.
et.G_Sound( entnum, soundindex )
--------------------------------
Plays a sound originating from position of an entity.
* **entnum** is the number of the entity which position is used as the sound origin.
* **soundindex** is the index of the sound that is played.
et.G_ClientSound( clientnum, soundindex )
-----------------------------------------
Plays a sound originating from a client entity to the team members of that client.
* **clientnum** is the slot number of the connected player.
* **soundindex** is the index to the sound to play.
Miscellaneous
=============
milliseconds = et.trap_Milliseconds()
-------------------------------------
Returns level time.
* **milliseconds** is the returned time in milliseconds.
success = et.isBitSet( bit, value )
-----------------------------------
Checks bit status of a bitmask value.
* **bit** is the checked bit.
* **value** is the bitmask value.
Returns 1 if the bit is set in the bitmask value, and 0 if it is not.
et.G_Damage( target, inflictor, attacker, damage, dflags, mod )
---------------------------------------------------------------
Damages target entity on behalf of the attacker entity.
* **target** is the entity number to damage.
* **inflictor** is the entity number that does the damage.
* **attacker** is the entity number that causes the **inflictor** entity to cause damage to **target**.
* **damage** is the amount of damage to inflict.
* **dflags** is the type of damage to inflict. See `Damage bitflags <misc.html#damage-bitflags>`__ for possible values.
* **mod** is the means of death. See `et.MOD_* constants <constants.html#mod-constants>`__ for possible values.
et.G_AddSkillPoints( clientNum, skill, points )
-----------------------------------------------
Adds points to the client's skill.
* **clientNum** is the slot number of the client.
* **skill** identifies the skill that the points are added to. See `Skill types <misc.html#skill-types>`__ for possible values.
* **points** is the amount of points to add.
et.G_LoseSkillPoints( clientNum, skill, points )
------------------------------------------------
Removes points to the client's skill.
* **clientNum** is the slot number of the client.
* **skill** identifies the skill that the points are removed from. See `Skill types <misc.html#skill-types>`__ for possible values.
* **points** is the amount of points to remove.
et.G_XP_Set ( clientNum , xp, skill, add )
------------------------------------------
Sets XP of the client.
* **clientNum** is the slot number of the client.
* **xp** is the number of XP points.
* **skill** identifies the skill that the points are added to. See `Skill types <misc.html#skill-types>`__ for possible values.
* **add** sets the XP points if 0, or adds to the existing XP points if 1.
et.G_ResetXP ( clientNum )
--------------------------
Resets XP of the client.
* **clientNum** is the slot number of the client.
et.AddWeaponToPlayer( clientNum, weapon, ammo, ammoclip, setcurrent )
---------------------------------------------------------------------
Adds a weapon to a client.
* **clientNum** is the slot number of the client.
* **weapon** is the weapon to add. See `et.WP_* constants <constants.html#wp-constants>`__ for possible values.
* **ammon** is the number of ammo to add.
* **ammoclip** is the number of ammo clip to add.
* **setcurrent** sets the weapon as current weapon if 1, or does not select it if 0.
.. note:: Adding a weapon does not automatically add its associated alternate weapon.
et.RemoveWeaponFromPlayer( clientNum, weapon )
----------------------------------------------
Removes a weapon from a client.
* **clientNum** is the slot number of the client.
* **weapon** is the weapon to add. See `et.WP_* constants <constants.html#wp-constants>`__ for possible values.
.. note:: Removing a weapon also removes its associated alternate weapon.
et.GetCurrentWeapon( clientNum )
----------------------------------------------
Return weapon, ammo, ammoclip from a client.
* **clientNum** is the slot number of the client.
Entities
========
entnum = et.G_CreateEntity( params )
------------------------------------
Creates a new entity.
* **params** are mapscript parameters.
* **entnum** is the returned number of the new entity.
et.G_DeleteEntity( params )
---------------------------
Deletes an entity.
* **params** are mapscript parameters.
entnum = et.G_TempEntity( origin, event )
-----------------------------------------
Spawns a new temp entity to a location.
* **origin** is the location the temp entity is placed.
* **event** is the event type of the entity. See `Event types <misc.html#event-types>`__ for possible values.
* **entnum** is the returned the number of the new entity.
et.G_FreeEntity( entnum )
-------------------------
Deletes an entity.
* **entnum** is the entity number.
count = et.G_EntitiesFree()
---------------------------
Calculates all free entities.
* **count** is the returned number of free entities.
.. note:: Free client entities (slots) are not counted.
et.G_SetEntState( entnum, newstate )
------------------------------------
Sets an entity state.
* **entnum** is the entity number.
* **newstate** is the new entity state.
et.trap_LinkEntity( entnum )
----------------------------
Links an entity.
* **entnum** is the entity number to link.
et.trap_UnlinkEntity( entnum )
------------------------------
Unlinks an entity.
* **entnum** is the entity number to unlink.
spawnval = et.G_GetSpawnVar( entnum, key )
------------------------------------------
Returns a value of a spawnvar.
* **entnum** is the entity number of the target.
* **key** is the key for the value to return. See `Entity fields <fields.html#entity-fields>`__ for possible values.
* **spawnval** is the returned spawn value.
et.G_SetSpawnVar( entnum, key, value )
--------------------------------------
Sets spawn value to an entity.
* **entitynum** is the target entity.
* **key** is the key for the value. See `Entity fields <fields.html#entity-fields>`__ for possible values.
* **value** is the new value for the key.
variable = et.gentity_get ( entnum, fieldname, arrayindex )
-----------------------------------------------------------
Returns a field value associated with an entity.
* **entnum** is the number of the entity.
* **fieldname** is the name of the field to get. See `Fields <fields.html>`__ for possible values.
* **arrayindex**, if present, specifies which element of an array entity field to get.
* **variable** is the returned field value. For NULL entities or clients, **nil** is returned.
.. note:: `arrayindex` is required when accessing array type fields. Array indexes start at 0.
et.gentity_set( entnum, fieldname, arrayindex, value )
------------------------------------------------------
Sets a value in an entity.
* **entnum** is the entity number that is manipulated.
* **fieldname** is the name of the field to manipulate. See `Fields <fields.html>`__ for possible values.
* **value** is the new value.
* **arrayindex**, if present, specifies which element of an array entity field to set.
et.trap_Trace( start, mins, maxs, end, entNum, mask )
-----------------------------------------------------
Traces an entity.
* **start** is the starting position.
* **mins** is the minimum point of the bounding box.
* **maxs** is the maximum point of the bounding box.
* **ends** is the ending position.
* **entNum** is the entity number that is being ignored by the trace function.
* **mask** is the content mask.
et.G_HistoricalTrace( ent, start, mins, maxs, end, entNum, mask )
-----------------------------------------------------------------
Runs a trace with players in historical positions.
* **ent** is the entity which trace history is handled.
* **start** is the starting position.
* **mins** is the minimum point of the bounding box.
* **maxs** is the maximum point of the bounding box.
* **ends** is the ending position.
* **entNum** is the entity number that is being ignored by the trace function.
* **mask** is the content mask.
et.G_AddEvent( ent, event, eventparm )
--------------------------------------
Adds an event to the entity event sequence.
* **ent** is the entity which event sequence is handled.
* **event** is the event to add.
* **eventparm** is optional parameter for the event.
Shaders
=======
et.G_ShaderRemap( oldShader, newShader )
----------------------------------------
Remaps shader.
* **oldShader** is the old shader.
* **newShader** is the new shader.
et.G_ResetRemappedShaders()
---------------------------
Resets remapped shaders.
et.G_ShaderRemapFlush()
-----------------------
Flushes remapped shaders.
et.G_SetGlobalFog( params )
---------------------------
Sets global fog to a specific color and density.
* **params** are mapscript fog parameters.