addPublicVariableEventHandler

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Description

Description:
This event handler will detect if a missionNamespace variable (it is attached to) has been broadcast over network with publicVariable, publicVariableClient or publicVariableServer commands and will execute EH code upon detection. Arguments passed to the code in _this array are:

_this select 0: String - broadcast variable name (same variable name EH is attached to)
_this select 1: Anything - broadcast variable value

Please note:
* EH works only in Multiplayer environment.
* EH will not fire on the machine that executed broadcast command, only on the machines that receive the broadcast.
* The value of broadcast variable can be exactly the same, it is the actual broadcast that triggers EH not the change in variable.
Groups:
Uncategorised

Syntax

Syntax:
varName addPublicVariableEventHandler code
Parameters:
varName: String - missionNamespace variable name
code: Code - By default, the code is executed in missionNamespace
Return Value:
Nothing

Examples

Example 1:
"publicThis" addPublicVariableEventHandler { hint format [ "%1 has been updated to: %2", _this select 0, _this select 1 ] };
Example 2:
Client:"'^:)123BURP,+=lol" addPublicVariableEventHandler {hint ("NUTS are " + (_this select 1))}; Server:missionNamespace setVariable ["'^:)123BURP,+=lol", "craZZZZy"]; publicVariable "'^:)123BURP,+=lol";

Additional Information

See also:
publicVariablepublicVariableClientpublicVariableServer

Notes

Report bugs on the Feedback Tracker and/or discuss them on the Arma Discord or on the Forums.
Only post proven facts here! Add Note

Notes

Posted on 22 Dec, 2007
TeRp
Please note that varName indicates which variable you want to monitor with this eventhandler.
As a result, the example eventhandler on this page will only fire when the variable publicThis has been changed, but not if any other variable was changed by any other client via the publicVariable command.
Posted on 27 Feb, 2014 00:57
MulleDK13
Note on using addPublicVariableEventHandler during initialization: If you need a function to call addPublicVariableEventHandler during initialization, you must use postInit. addPublicVariableEventHandler does not work during preInit.
Posted on 27 Feb, 2014 08:40
Killzone_Kid
MulleDK13 note above needs some clarification. You don't "must" use postInit and you absolutely can use preInit function to initialise addPublicVariableEventHandler if you start scheduled script from it.
//script with preInit = 1; in CfgFunctions 0 = 0 spawn { "someVar" addPublicVariableEventHandler { //yourcode }; };

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Posted on April 1, 2015 - 23:55 (UTC)
RyanCheeky
KillZone_Kid's note above holds some truth to it, but adding event handlers to the server does not require a scheduled script to work correctly.