setVariable: Difference between revisions

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{{Command|= Comments
{{RV|type=command
____________________________________________________________________________________________


| arma |= Game name
|game1= arma1
|version1= 1.00


|1.00|= Game version
|game2= arma2
|version2= 1.00


|arg= local |= Arguments in MP
|game3= arma2oa
|version3= 1.50


|eff= local |= Effects in MP
|game4= tkoh
____________________________________________________________________________________________
|version4= 1.00


| Set variable to given value in the variable space of given object. In MP The variable space of the object is local to each client. Changes are not broadcast.
|game5= arma3
|version5= 0.50


The object must be a vehicle, otherwise the function does nothing.  |= Description
|arg= global
____________________________________________________________________________________________


| [[Object]] '''setVariable''' ["name", value] |= Syntax
|eff= local


|p1= [[Object]] |= Parameter 1
|gr1= Variables


|p2= name: [[String]]
|gr2= Namespaces
|p3= value: [[Number]]


| [[Nothing]] |= Return value
|gr3= Multiplayer
____________________________________________________________________________________________
|x1= <code>_myTruck setVariable ["myVariable",123];</code> |= Example 1


| [[getVariable]] |= See also
|descr= Set variable to given value in the variable space of given element. Can be used to broadcast variables over the network.<br>
To remove a variable, set it to [[nil]] (see {{Link|#Example 5}}) - note that this does not work on [[Object]] and [[createLocation|scripted]] [[Location]] namespaces (the variable will be set to [[nil]] but will remain listed by [[allVariables]]).


{{Feature|warning|
[[missionNamespace]], [[uiNamespace]], [[parsingNamespace]] and [[profileNamespace]] variables '''cannot''' be named as commands - e.g <sqf inline>missionNamespace setVariable ["west", 123];</sqf> conflicts with the [[west]] command and will result in a {{hl|Reserved variable in expression}} error, [[west]] being a scripting command (other namespaces do not have such limitation).
See also [[:Category:Scripting Commands|all available script commands]].
}}
}}


<h3 style="display:none">Notes</h3>
|s1= varspace [[setVariable]] [name, value, public]
<dl class="command_description">
<!-- Note Section BEGIN -->
According to Suma, beginning with ArmA version 1.08, "setVariable now should work on any entity which can be targeted by AI, including soldier and game logic units. This includes most buildings, but not other static objects.


Using it with buildings one should be aware the building may be discarded because of streaming. In such case the variable space is lost. When used for buildings, the storage should therefore be considered non-reliable." Reference: [http://bugs.armed-assault.net/view.php?id=2444 Make setVariable work on other things than just vehicles]
|p1= varspace: variable space in which variable can be set. Can be one of:
<!-- Note Section END -->
{{Columns|2|
</dl>
* [[Namespace]]
* [[Object]]
** {{Icon|checked}} {{GVI|arma3|2.10|size= 0.75}} {{hl|CfgAmmo}} [[Object]]s (bullets, mines etc)
** {{Icon|unchecked}} {{hl|CfgNonAIVehicles}} [[Object]]s (butterflies, proxies etc - {{hl|EmptyDetector}}s (triggers) work)
** {{Icon|unchecked}} {{hl|#local}} [[Object]]s ({{hl|#lightpoint}}, {{hl|#soundsource}} etc - see [[createVehicleLocal]])
* [[Group]]
* [[Location]] ({{GVI|arma3|2.10|size= 0.75}} [[createLocation|scripted ones]] only)
* {{GVI|arma2|1.00|size= 0.75}} [[Team Member]]
* {{GVI|arma2|1.00|size= 0.75}} [[Task]] - ''value'' will actually be set on the [[Task]]'s [[FSM]] '''if''' it exists.
* {{GVI|arma3|0.50|size= 0.75}} [[Control]]
* {{GVI|arma3|0.50|size= 0.75}} [[Display]]
}}
 
|p2= name: [[String]] - variable name ([[Identifier]])
 
|p3= value: [[Anything]] - variable value
 
|p4= public - (Optional, default [[false]]) can be one of:
* [[Boolean]] - if set to [[true]], the variable is broadcast globally and is persistent ([[Multiplayer Scripting#Join In Progress|JIP]] compatible) {{Icon|globalEffect|32}}
* [[Number]] - the variable is only set on the client with the given [[Multiplayer Scripting#Machine network ID|Machine network ID]]. If the number is negative, the variable is set on every client except for the one with the given ID.
* [[Array]] of [[Number]]s - array of [[Multiplayer Scripting#Machine network ID|Machine network IDs]]
 
This parameter is only available if the '''varspace''' parameter is a [[Namespace]], [[Object]] or [[Group]]. Furthermore, only the following [[:Category: Data Types|Data Types]] can be broadcast:
{{{!}} class="wikitable align-center"
! Type
{{!}} [[Number]]
{{!}} [[Boolean]]
{{!}} [[Object]]
{{!}} [[Group]]
{{!}} [[String]]
{{!}} [[Structured Text|Text]]
{{!}} [[Array]]
{{!}} [[Code]]
{{!}} [[Nothing]] ([[nil]])
{{!}} [[HashMap]]
{{!}}-
! Since
{{!}} colspan="6" {{!}} {{GVI|arma1|1.00}}
{{!}} colspan="2" {{!}} {{GVI|arma1|1.09}}
{{!}} {{GVI|arma3|1.26}}
{{!}} {{GVI|arma3|2.02}}
{{!}}}
|p4since= arma2 1.00
 
|r1= [[Nothing]]
 
|x1= <sqf>_myTruck setVariable ["TAG_myPublicVariable", 123, true];</sqf>
 
|x2= <sqf>_myTruck setVariable ["TAG_myLocalVariable", ["321", _var], owner driver _myTruck];</sqf>
 
|x3= <sqf>missionNamespace setVariable ["TAG_myName", "Brian"];
hint TAG_myName; // hints "Brian"</sqf>
 
|x4= Get the current value of a variable or, if it is undefined, define it and then get the value:
<sqf>
private _var = missionNamespace getVariable "VarName";
if (isNil "_var") then
{
_var = 123;
missionNamespace setVariable ["VarName", _var];
};
// _var now contains the current value of the missionNamespace's variable varName
</sqf>


<h3 style="display:none">Bottom Section</h3>
|x5= Remove {{hl|TAG_myPublicVariable}} from [[missionNamespace]] (globally):
[[Category:Scripting Commands|SETVARIABLE]]
<sqf>missionNamespace setVariable ["TAG_myPublicVariable", nil, true];</sqf>
[[Category:Scripting Commands OFP Elite |SETVARIABLE]]
 
[[Category:Scripting Commands ArmA|SETVARIABLE]]
|seealso= [[getVariable]] [[allVariables]] [[setFSMVariable]]
}}
 
{{Note
|user= Killswitch
|timestamp= 20070818095100
|text= According to {{User|Suma}}, beginning with {{Name|arma1|short}} version 1.08:
{{Feature|quote|
[[setVariable]] now should work on any entity which can be targeted by AI, including soldier and game logic units. This includes most buildings, but not other static objects.
'''Using it with buildings one should be aware the building may be discarded because of streaming'''. In such case the variable space is lost. When used for buildings, the storage should therefore be considered non-reliable.
| {{User|Suma}}
| Talk:setVariable#setVariable local or global in Multiplayer}}
}}
 
{{Note
|user= Commy2
|timestamp= 20151209201800
|text= This command does not work with CfgAmmo or CfgNonAIVehicles objects, like bullets, mines or butterflies.
}}
 
{{Note
|user= Leopard20
|timestamp= 20220323085950
|text= Since {{GVI|arma3|2.10}} [[setVariable]] works on CfgAmmo objects (such as bullets, missiles, grenades, mines, etc) as well.
}}

Latest revision as of 00:37, 4 March 2024

Hover & click on the images for description

Description

Description:
Set variable to given value in the variable space of given element. Can be used to broadcast variables over the network.
To remove a variable, set it to nil (see Example 5) - note that this does not work on Object and scripted Location namespaces (the variable will be set to nil but will remain listed by allVariables).
missionNamespace, uiNamespace, parsingNamespace and profileNamespace variables cannot be named as commands - e.g missionNamespace setVariable ["west", 123]; conflicts with the west command and will result in a Reserved variable in expression error, west being a scripting command (other namespaces do not have such limitation). See also all available script commands.
Groups:
VariablesNamespacesMultiplayer

Syntax

Syntax:
varspace setVariable [name, value, public]
Parameters:
varspace: variable space in which variable can be set. Can be one of:
name: String - variable name (Identifier)
value: Anything - variable value
since Logo A2.png1.00
public - (Optional, default false) can be one of: This parameter is only available if the varspace parameter is a Namespace, Object or Group. Furthermore, only the following Data Types can be broadcast:
Type Number Boolean Object Group String Text Array Code Nothing (nil) HashMap
Since Logo A1 black.png1.00 Logo A1 black.png1.09 Arma 3 logo black.png1.26 Arma 3 logo black.png2.02
Return Value:
Nothing

Examples

Example 1:
_myTruck setVariable ["TAG_myPublicVariable", 123, true];
Example 2:
_myTruck setVariable ["TAG_myLocalVariable", ["321", _var], owner driver _myTruck];
Example 3:
missionNamespace setVariable ["TAG_myName", "Brian"]; hint TAG_myName; // hints "Brian"
Example 4:
Get the current value of a variable or, if it is undefined, define it and then get the value:
private _var = missionNamespace getVariable "VarName"; if (isNil "_var") then { _var = 123; missionNamespace setVariable ["VarName", _var]; }; // _var now contains the current value of the missionNamespace's variable varName
Example 5:
Remove TAG_myPublicVariable from missionNamespace (globally):
missionNamespace setVariable ["TAG_myPublicVariable", nil, true];

Additional Information

See also:
getVariable allVariables setFSMVariable

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
Killswitch - c
Posted on Aug 18, 2007 - 09:51 (UTC)
According to Suma, beginning with ArmA version 1.08:
«
« setVariable now should work on any entity which can be targeted by AI, including soldier and game logic units. This includes most buildings, but not other static objects. Using it with buildings one should be aware the building may be discarded because of streaming. In such case the variable space is lost. When used for buildings, the storage should therefore be considered non-reliable. » – Suma (source)
Commy2 - c
Posted on Dec 09, 2015 - 20:18 (UTC)
This command does not work with CfgAmmo or CfgNonAIVehicles objects, like bullets, mines or butterflies.
Leopard20 - c
Posted on Mar 23, 2022 - 08:59 (UTC)
Since Arma 3 logo black.png2.10 setVariable works on CfgAmmo objects (such as bullets, missiles, grenades, mines, etc) as well.