addMissionEventHandler: Difference between revisions

Latest revision as of 11:46, 5 May 2024

0.50

LELocal

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Description

Description:: Adds event handler attached to the current mission and returns event handler handle. For the list of available mission event handlers see: Arma 3: Mission Event Handlers
Groups:: Event Handlers

Syntax

Syntax:

addMissionEventHandler [event, expression, arguments]

Parameters:

event: String - event name

expression: Code or String - expression that will be executed in missionNamespace when event handler fires.

If the event handler has some data to return upon activation they are stored in the _this variable
1.64 the event handler's handle is stored in _thisEventHandler variable and is available during event handler code execution
2.04 it is possible to pass additional arguments to the EH code via optional param. The args are stored in _thisArgs variable

⚠

Only arguments of simple types get proper serialization. Objects, Groups etc will not serialize and appear as NULLs on game load.

2.06 the event's name is available from _thisEvent variable

since 2.04

arguments: Array - (Optional, default []) additional arguments to be passed to the EH code. Available during code execution via _thisArgs variable.

Return Value:

Number - the index of the currently added mission event handler is returned

Examples

Example 1:: _id = addMissionEventHandler ["PlayerDisconnected", { systemChat str _this }];
Example 2:: _id = addMissionEventHandler ["EachFrame", { systemChat str [_thisArgs, time] }, [time]];

Additional Information

See also:: removeMissionEventHandler removeAllMissionEventHandlers getEventHandlerInfo

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

@@ Line 1: / Line 1: @@
-{{Command|= Comments
+{{RV|type=command
-____________________________________________________________________________________________
-| arma3 |= Game name
+|game1= arma3
+|version1= 0.50
-|0.50|= Game version
+|eff= local
-____________________________________________________________________________________________
-| Adds event handler (EH) attached to the current mission and returns EH handle. If EH has some data to return upon event, it is passed in <tt>_this</tt> variable. Since Arma 3 v.1.63.137807 the EH handle is also stored in <tt>_thisEventHandler</tt> variable and is available during EH code execution.<br><br>For the list of available mission event handlers see: [[Arma_3:_Event_Handlers/addMissionEventHandler]]|DESCRIPTION=
+|gr1= Event Handlers
-____________________________________________________________________________________________
-| '''addMissionEventHandler''' [type, command] |SYNTAX=
+|descr= Adds event handler attached to the current mission and returns event handler handle. For the list of available mission event handlers see: [[Arma 3: Mission Event Handlers]]
-|p1= [type, command]: [[Array]]  |PARAMETER1=
+|s1= [[addMissionEventHandler]] [event, expression, arguments]
-|p2= type: [[String]]  |PARAMETER2=
+|p1= event: [[String]] - event name
-|p3= command: [[Code]] or [[String]] - By default executed in [[missionNamespace]] |PARAMETER3=
+|p2= expression: [[Code]] or [[String]] - expression that will be executed in [[missionNamespace]] when event handler fires.
+* If the event handler has some data to return upon activation they are stored in the {{hl|_this}} variable
+* {{GVI|arma3|1.64|size= 0.75}} the event handler's handle is stored in {{hl|_thisEventHandler}} variable and is available during event handler code execution
+* {{GVI|arma3|2.04|size= 0.75}} it is possible to pass additional arguments to the EH code via optional param. The ''args'' are stored in {{hl|_thisArgs}} variable
+{{Feature|important|Only arguments of simple types get proper serialization. [[Object]]s, [[Group]]s etc will not serialize and appear as NULLs on game load.}}
+* {{GVI|arma3|2.06|size= 0.75}} the event's name is available from {{hl|_thisEvent}} variable
-| [[Number]] - The index of the currently added mission event handler is returned. |RETURNVALUE=
+|p3= arguments: [[Array]] - (Optional, default <sqf inline>[]</sqf>) additional arguments to be passed to the EH code. Available during code execution via {{hl|_thisArgs}} variable.
+|p3since= arma3 2.04
+|r1= [[Number]] - the index of the currently added mission event handler is returned
-|x1= <code>// A script could be executed to stop custom scripts graciously, or save progress & stats, for example:
+|x1= <sqf>_id = addMissionEventHandler ["PlayerDisconnected", { systemChat str _this }];</sqf>
-_id = [[addMissionEventHandler]] ["Ended",{ _this [[execVM]] "missionEnded.sqf" }];</code>|EXAMPLE1=
+|x2= <sqf>_id = addMissionEventHandler ["EachFrame", { systemChat str [_thisArgs, time] }, [time]];</sqf>
-____________________________________________________________________________________________
+|seealso= [[removeMissionEventHandler]] [[removeAllMissionEventHandlers]] [[getEventHandlerInfo]]
-| [[removeMissionEventHandler]], [[removeAllMissionEventHandlers]] |SEEALSO=
-|  |MPBEHAVIOUR=
-____________________________________________________________________________________________
 }}
-<h3 style='display:none'>Notes</h3>
-<dl class='command_description'>
-<!-- Note Section BEGIN -->
-<!-- Note Section END -->
-</dl>
-<h3 style='display:none'>Bottom Section</h3>
-[[Category:Arma_3:_New_Scripting_Commands_List|{{uc:{{PAGENAME}}}}]]
-[[Category:Scripting Commands Arma 3|{{uc:{{PAGENAME}}}}]]
-[[Category:Scripting Commands|{{uc:{{PAGENAME}}}}]]