BIS fnc addStackedEventHandler: Difference between revisions

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| Stack an event handler. Possible event handlers are:
| Stacks an event handler. All event handlers accept user arguments, which are passed to the EH code in <tt>_this</tt> variable. If the EH has own params returned in <tt>_this</tt> variable as well, use arguments are appended to the end of <tt>_this</tt> array.
* "[[onEachFrame]]"
<br><br>
* "[[onPlayerConnected]]"
<u>Supported event handlers</u>
* "[[onPlayerDisconnected]]"
<br><br>
* "[[onMapSingleClick]]"
* <tt>"[[onEachFrame]]"</tt> - no EH params
* "[[onPreloadStarted]]"
* <tt>"[[onPlayerConnected]]"</tt> - EH params are passed as array in <tt>_this</tt> (<tt>[<id>,<uid>,<name>,<jip>,<owner>]</tt>) and in special variables <tt>_id</tt>, <tt>_uid</tt>, <tt>_name</tt>, <tt>_jip</tt>, <tt>_owner</tt>
* "[[onPreloadFinished]]" |= Description
* <tt>"[[onPlayerDisconnected]]"</tt> - EH params are passed as array in <tt>_this</tt> (<tt>[<id>,<uid>,<name>,<jip>,<owner>]</tt>) and in special variables <tt>_id</tt>, <tt>_uid</tt>, <tt>_name</tt>, <tt>_jip</tt>, <tt>_owner</tt>
* <tt>"[[onMapSingleClick]]"</tt> - EH params are passed as array in <tt>_this</tt> (<tt>[<id>,<uid>,<name>,<jip>,<owner>]</tt>) and in special variables <tt>_id</tt>, <tt>_uid</tt>, <tt>_name</tt>, <tt>_jip</tt>, <tt>_owner</tt>
* <tt>"[[onPreloadStarted]]"</tt> - no EH params
* <tt>"[[onPreloadFinished]]"</tt> - no EH params|= Description
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| [key, event, code, arguments] call [[BIS_fnc_addStackedEventHandler]]; |= Syntax
| [id, event, code, arguments] call [[BIS_fnc_addStackedEventHandler]]; |= Syntax


|p1= key: [[String]] - unique identifier|= Parameter 1
|p1= id: [[String]] - custom id, a unique identifier. Adding same type of EH with the same id will overwrite existing|= Parameter 1


|p2= event: [[String]] - event handler type, see Description|= Parameter 2
|p2= event: [[String]] - event handler name, see description for supported EHs|= Parameter 2


|p3= code: [[String]] or [[Code]] |= Parameter 3
|p3= code: [[Code]] or [[String]]. The [[String]] is treated as function name |= Parameter 3


|p4= arguments: [[Anything]] - arguments to make available in code|= Parameter 4
|p4= arguments: [[Array]] of [[Anything]] - arguments to make available in code in <tt>_this</tt> array|= Parameter 4


| [[String]] |= Return value
| [[String]] |= Return value
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|x1= <code>["someId", "onEachFrame", {
|x1= <code>["someId", "onEachFrame", {[[hintSilent]] [[str]] [[time]]}] [[call]] [[BIS_fnc_addStackedEventHandler]];</code> |=  
[[hintSilent]] [[str]] [[time]];
}] [[call]] [[BIS_fnc_addStackedEventHandler]];</code> |=  


|x2= <code>["someId", "onEachFrame", {
|x2= <code>["someId", "onEachFrame", {[[hintSilent]] [[str]] [[position]] (_this [[select]] 0)}, <nowiki>[</nowiki>[[player]]]] [[call]] [[BIS_fnc_addStackedEventHandler]];</code> |=  
[[hintSilent]] [[str]] [[Magic Variables|_this]];
}, "Hello world!"] [[call]] [[BIS_fnc_addStackedEventHandler]];</code> |=  
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<dl class="command_description">
<dl class="command_description">
<!-- Note Section BEGIN -->
<!-- Note Section BEGIN -->
<dd class="notedate">Posted on November 1, 2013
<dt class="note">[[User:neokika|neokika]]<dd class="note">
More info at: http://forums.bistudio.com/showthread.php?167822-Stacked-event-handlers-OnEachFrame-OnPlayerConnected-etc
<dd class="notedate">Posted on February 11, 2014


<dd class="notedate">Posted on 25 Jun, 2014
<dd class="notedate">Posted on 25 Jun, 2014
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[[Category:Functions|{{uc:addStackedEventHandler}}]]
[[Category:Functions|{{uc:addStackedEventHandler}}]]
[[Category:{{Name|arma3}}: Functions|{{uc:addStackedEventHandler}}]]
[[Category:{{Name|arma3}}: Functions|{{uc:addStackedEventHandler}}]]
<!-- CONTINUE Notes -->
<dl class="command_description">
<dd class="notedate">Posted on December 8, 2014 - 08:21 (UTC)</dd>
<dt class="note">[[User:DreadedEntity|DreadedEntity]]</dt>
<dd class="note">
It is not possible to override default engine behavior with stacked event handlers. This is because [[BIS_fnc_executeStackedEventHandler]], a function that is called inside [[BIS_fnc_addStackedEventHandler]], '''always''' returns false.
</dd>
</dl>
<!-- DISCONTINUE Notes -->
<!-- CONTINUE Notes -->
<dl class="command_description">
<dd class="notedate">Posted on December 8, 2014 - 20:56 (UTC)</dd>
<dt class="note">[[User:DreadedEntity|DreadedEntity]]</dt>
<dd class="note">
You cannot use stacked EH's and non-stacked EH's (just the normal commands, [[onEachFrame]]/[[onMapSingleClick]]/etc.) of the same event together because [[BIS_fnc_addStackedEventHandler]] utilizes these commands in it's code, overwriting a non-stacked EH. Redefining a non-stacked EH will also overwrite all stacked EH's (in that particular event).
Stacked Event Handlers are saved to [[missionNamespace]] whenever a new one is added, to view them use:
<code>[[hint]] [[str]] ([[missionNamespace]] [[getVariable]] ["BIS_stackedEventHandlers_XXX",[]]);
where "XXX" is each event name ("[[onEachFrame]]", "[[onPreloadStarted]]", "[[onPreloadFinished]]", "[[onMapSingleClick]]", "[[onPlayerConnected]]", "[[onPlayerDisconnected]]")</code>
</dd>
</dl>
<!-- DISCONTINUE Notes -->

Revision as of 11:57, 15 July 2017

Arma 3 logo black.png1.00
Hover & click on the images for description

Description

Description:
Stacks an event handler. All event handlers accept user arguments, which are passed to the EH code in _this variable. If the EH has own params returned in _this variable as well, use arguments are appended to the end of _this array.

Supported event handlers

  • "onEachFrame" - no EH params
  • "onPlayerConnected" - EH params are passed as array in _this ([<id>,<uid>,<name>,<jip>,<owner>]) and in special variables _id, _uid, _name, _jip, _owner
  • "onPlayerDisconnected" - EH params are passed as array in _this ([<id>,<uid>,<name>,<jip>,<owner>]) and in special variables _id, _uid, _name, _jip, _owner
  • "onMapSingleClick" - EH params are passed as array in _this ([<id>,<uid>,<name>,<jip>,<owner>]) and in special variables _id, _uid, _name, _jip, _owner
  • "onPreloadStarted" - no EH params
  • "onPreloadFinished" - no EH params
Execution:
call
Groups:
Uncategorised

Syntax

Syntax:
[id, event, code, arguments] call BIS_fnc_addStackedEventHandler;
Parameters:
id: String - custom id, a unique identifier. Adding same type of EH with the same id will overwrite existing
event: String - event handler name, see description for supported EHs
code: Code or String. The String is treated as function name
arguments: Array of Anything - arguments to make available in code in _this array
Return Value:
String

Examples

Example 1:
["someId", "onEachFrame", {hintSilent str time}] call BIS_fnc_addStackedEventHandler;
Example 2:
["someId", "onEachFrame", {hintSilent str position (_this select 0)}, [player]] call BIS_fnc_addStackedEventHandler;

Additional Information

See also:
BIS_fnc_removeStackedEventHandler

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 25 Jun, 2014
ffur2007slx2_5
(ArmA3 1.22) Stack all codes into one PFH will be less demanding than separated calling within multiple PFH. E.g. { [(format [“%1”,_forEachIndex]),”onEachFrame”,_code,[_x]] call BIS_fnc_addStackedEventHandler; } forEach [var0…var100]; //pretty demanding [_id, ”onEachFrame”,{ {_x call _code} forEach [var0…var100]; }] call BIS_fnc_addStackedEventHandler; //faster

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