Difference between revisions of "SetElementData"

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==See Also==
 
==See Also==
[[pt-br:SetElementData
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[[pt-br:SetElementData]]
 
{{Element_functions}}
 
{{Element_functions}}

Revision as of 22:28, 6 August 2020

This function stores element data under a certain key, attached to an element. Element data set using this is then synced with all clients and the server. The data can contain server created elements, but you should avoid passing data that is not able to be synced such as xmlnodes, acls, aclgroups etc.

As element data is synced to all clients, it can generate a lot of network traffic and be heavy on performance. Events are much more efficient for sending data from a client to the server only, or from the server to a specific client.
Usage of element data should be disencouraged where your goal can be achieved with events like above, and tables for storing and retrieving data.


[[{{{image}}}|link=]] Tip: A simple and efficient way to make a variable known to the server and clients is to use setElementData on the root element.
[[{{{image}}}|link=]] Note: See Script security for tips on preventing cheaters when using events and element data
[[{{{image}}}|link=]] Note: For performance reasons, never use setElementData in events that fire often (like onClientRender) without further optimization or conditions. In fact, using element data in general can take such a toll on performance that not using it unless strictly neccesary (e.g use alternatives such as storing data in tables) is recommended.

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BETA: FROM VERSION 1.5.7-9.20477 ONWARDS
A subscription mode has been introduced for setElementData serverside. When setting data in subscription mode, only clients that are added through addElementDataSubscriber will receive the data, which is good for performance.

Note this mode only works when setting element data serverside. Setting data clientside still sends the update to all clients if 'synchronize' is set to true.

Syntax

bool setElementData ( element theElement, string key, var value [, bool synchronize = true ] )

OOP Syntax Help! I don't understand this!

Method: element:setData(...)
Counterpart: getElementData

Required Arguments

  • theElement: The element you wish to attach the data to.
  • key: The key you wish to store the data under. (Maximum 31 characters.)
  • value: The value you wish to store. See element data for a list of acceptable datatypes.

Optional Arguments

  • synchronize: Determines whether or not the data will be synchronized with the clients(server-side variation) or server(client-side variation)

Returns

Returns true if the data was set succesfully, false otherwise.

BETA: FROM VERSION 1.5.7-9.20477 ONWARDS

Syntax

Click to collapse [-]
Server
bool setElementData ( element theElement, string key, var value [, var syncMode="broadcast"] )

OOP Syntax Help! I don't understand this!

Method: element:setData(...)
Counterpart: getElementData

Required Arguments

  • theElement: The element you wish to attach the data to.
  • key: The key you wish to store the data under. (Maximum 31 characters.)
  • value: The value you wish to store. See element data for a list of acceptable datatypes.

Optional Arguments

  • syncMode: Synchronisation mode.
    • "broadcast" - Synchronise to all clients (default behavior). You can also parse true for this option.
    • "local" - Don't synchronise. You can also parse false for this option.
    • "subscribe" - Only synchronise to specific clients. See addElementDataSubscriber and removeElementDataSubscriber.
Click to collapse [-]
Client
bool setElementData ( element theElement, string key, var value [, bool synchronize = true ] )

OOP Syntax Help! I don't understand this!

Method: element:setData(...)
Counterpart: getElementData

Required Arguments

  • theElement: The element you wish to attach the data to.
  • key: The key you wish to store the data under. (Maximum 31 characters.)
  • value: The value you wish to store. See element data for a list of acceptable datatypes.

Optional Arguments

  • synchronize: Determines whether or not the data will be synchronized with the server.

Returns

Returns true if the data was set succesfully, false otherwise.

Issues

Issue ID Description
#7389 [Fixed in 1.3.5-7389] Problem with floating numbers

Example

Click to expand [+]
Server

See Also

BETA: FROM VERSION 1.5.7 r20477 ONWARDS
BETA: FROM VERSION 1.5.7 r20447 ONWARDS
BETA: FROM VERSION 1.5.7 r20477 ONWARDS
BETA: FROM VERSION 1.5.7 r20477 ONWARDS