setVariable: Difference between revisions

Revision as of 20:54, 16 July 2021

1.00

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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).

⚠

missionNamespace, uiNamespace, parsingNamespace and profileNamespace variable names can be any string but reserved names such as script commands. For example: missionNamespace setVariable ["west", 123]; will result in error:

Error in expression <missionNamespace setVariable ["west", 123];>
	Error position: <setVariable ["west", 123];>
	Error Reserved variable in expression

as west is a scripting command. Other varspaces do not have such limitation. See also all available script commands.

Multiplayer:

The variable space of the object is local to each client and by default changes are not broadcast.

Groups:

Multiplayer Variables

Syntax

Syntax:

varspace setVariable [name, value, public]

Parameters:

varspace: variable space in which variable can be set. Can be one of:

support public parameter	local usage only (no public parameter)
Namespace Object Group	Location (only the scripted ones) Team Member Template:Since Task Template:Since value will actually be set on Task's FSM. If none exist, the data will not be set Control Template:Since Display Template:Since

name: String - variable name

value: Anything - variable value

public: Boolean, Number or Array of Numbers - (Optional, default false): Template:Since

Boolean - when set to true, the variable broadcast is global and persistent (JIP compatible) GEGlobal
Number - the variable is set only on the client of given ownerId, or if id is negative, the variable is set on every client except the given one (see Multiplayer Scripting - Machine network ID)
Array of Numbers - array of ownerIds

Broadcast of the following Data Types is supported:

Type	Number	Boolean	Object	Group	String	Text	Array	Code	Nothing (nil)	HashMap
Since	1.34	1.34	1.34	1.34	1.00	1.00	1.09	1.09	1.26	2.02

Return Value:

Nothing

Examples

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

Additional Information

See also:: getVariable allVariables setFSMVariable Multiplayer Scripting

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

: Posted on December 9, 2015 - 20:18 (UTC)
Commy2: This command does not work with CfgAmmo or CfgNonAIVehicles objects, like bullets, mines or butterflies.

@@ Line 24: / Line 24: @@
 |gr2= Variables
-|descr= Set variable to given value in the variable space of given element.
+|descr= 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 {{HashLink|#Example 5}}).
-* To remove a variable, set it to [[nil]] (e.g. {{ic|[[player]] [[setVariable]] ["varname", [[nil]]<nowiki>]</nowiki>;}}).
-* When variable is set on [[Task]], it is not actually set on task itself, but on FSM attached to the task. So if there is no FSM [[setVariable]] will not work.
-* When variable is set on [[Location]], it works only with locations created with [[createLocation]].
-{{Feature|arma3|In Arma 3 it is possible to broadcast [[nil]] value!}}
+{{Feature | Warning | [[missionNamespace]], [[uiNamespace]], [[parsingNamespace]] and [[profileNamespace]] variable names can be any string but reserved names such as script commands. For example: <tt>[[missionNamespace]] setVariable ["west", 123];</tt> will result in error:
-|mp= The variable space of the object is '''local to each client''' and '''by default''' changes are not broadcast.<br>
-Since Arma 2: '''If''' the '''public''' parameter for supported types is ''<tt>true</tt>'', the value will be '''synchronized''' also for a [[Multiplayer Scripting#Join In Progress|JIP]] player.
-|pr= {{Feature | Warning | [[missionNamespace]], [[uiNamespace]], [[parsingNamespace]] and [[profileNamespace]] variable names could be any string, except for the reserved names, which are normally script command names. For example: <tt>[[missionNamespace]] setVariable ["west", 123];</tt> will result in error:
   Error in expression <missionNamespace setVariable ["west", 123];>
-    Error position: <setVariable ["west", 123];>
+ 	Error position: <setVariable ["west", 123];>
-    Error Reserved variable in expression
+ 	Error Reserved variable in expression
-as [[west]] is a script command. Other varspaces do not have such limitation. You can always check for all available script commands by running [[Arma_3_Utilities#Script_Commands | utility number 5]]}}
+as [[west]] is a scripting command. Other varspaces do not have such limitation. See also [[:Category:Scripting Commands|all available script commands]].
+}}
-|s1= varspace [[setVariable]] [name, value]
+|mp= The variable space of the object is '''local to each client''' and '''by default''' changes are not broadcast.
-|p1= varspace: [[Namespace]], [[Object]], [[Group]], [[Team Member]], [[Task]], [[Location]], [[Control]], [[Display]] - Variable space in which variable can be set
+|s1= varspace [[setVariable]] [name, value, public]
-{{Feature|arma3|Since Arma 3 also [[Control]] and [[Display]] are supported types.}}
-|p2= name: [[String]] - Variable name
-|p3= value: [[Anything]] - Variable value
+|p1= varspace: variable space in which variable can be set. Can be one of:
+{{{!}} class="wikitable"
+! support ''public'' parameter
+! local usage only (no ''public'' parameter)
+{{!}}- style="vertical-align: top"
+{{!}}
+* [[Namespace]]
+* [[Object]]
+* [[Group]]
+{{!}}
+* [[Location]] (only the [[createLocation|scripted]] ones)
+* [[Team Member]]  {{Since|arma2}}
+* [[Task]]  {{Since|arma2}}
+** value will actually be set on [[Task]]'s [[FSM]]. If none exist, the data will not be set
+* [[Control]] {{Since|arma3}}
+* [[Display]] {{Since|arma3}}
+{{!}}}
-|r1= [[Nothing]]
+|p2= name: [[String]] - variable name
-|s2= varspace [[setVariable]] [name, value, public]
+|p3= value: [[Anything]] - variable value
-|p21= varspace: [[missionNamespace]], [[Object]] or [[Group]] - Variable space in which variable can be set
+|p4= public: [[Boolean]], [[Number]] or [[Array]] of [[Number]]s - (Optional, default [[false]]): {{Since|arma2||y}}
+* [[Boolean]] - when set to [[true]], the variable broadcast is global and persistent ([[Multiplayer Scripting#Join In Progress|JIP]] compatible) {{Icon|globalEffect|32}}
+* [[Number]] - the variable is set only on the client of given [[Multiplayer Scripting#Machine network ID|ownerId]], or if id is negative, the variable is set on every client except the given one (see {{HashLink|Multiplayer Scripting#Machine network ID}})
+* [[Array]] of [[Number]]s - array of [[Multiplayer Scripting#Machine network ID|ownerIds]]
-|p22= name: [[String]] - Variable name
+Broadcast of the following [[:Category: Data Types|Data Types]] is supported:
+{{{!}} class{{=}}"wikitable" style{{=}}"text-align: center"
+! Type
+{{!}} [[Number]]
+{{!}} [[Boolean]]
+{{!}} [[Object]]
+{{!}} [[Group]]
+{{!}} [[String]]
+{{!}} [[Text]]
+{{!}} [[Array]]
+{{!}} [[Code]]
+{{!}} [[Nothing]] ([[nil]])
+{{!}} [[HashMap]]
+{{!}}-
+! Since
+{{!}} {{GVI|ofp|1.34}}
+{{!}} {{GVI|ofp|1.34}}
+{{!}} {{GVI|ofp|1.34}}
+{{!}} {{GVI|ofp|1.34}}
+{{!}} {{GVI|arma1|1.00}}
+{{!}} {{GVI|arma1|1.00}}
+{{!}} {{GVI|arma1|1.09}}
+{{!}} {{GVI|arma1|1.09}}
+{{!}} {{GVI|arma3|1.26}}
+{{!}} {{GVI|arma3|2.02}}
+{{!}}}
-|p23= value: [[Anything]] - Variable value (if public is [[true]], check [[publicVariable]] for what types are supported for broadcast)
+|r1= [[Nothing]]
-|p24= public: [[Boolean]], [[Number]] or [[Array]] of [[Number]]s
+|x1= <code>_myTruck [[setVariable]] ["TAG_myPublicVariable", 123, [[true]]];</code>
-* [[Boolean]] - When [[true]], the variable broadcast is global and persistent {{Icon|globalEffect|32}}
-* [[Number]] - The variable is set only on the client of given [[owner]] ([[clientOwner]]) id, or if id is negative, the variable is set on every client except the given one
+|x2= <code>_myTruck [[setVariable]] ["TAG_myLocalVariable", ["321", _var], [[driver]] _myTruck];</code>
-* [[Array]] of [[Number]]s - Array of [[owner]] ([[clientOwner]]) ids
+|x3= <code>[[missionNamespace]] [[setVariable]] ["TAG_myName", "Brian"];
+[[hint]] TAG_myName; {{cc|hints "Brian"}}</code>
-|r2= [[Nothing]]
+|x4= Get current value of a variable and if it is undefined, define it and get the defined value:
+<code>[[private]] _var = [[missionNamespace]] [[getVariable]] "varName";
-|x1= <code>_myTruck [[setVariable]] ["myPublicVariable", 123, [[true]]];</code>
-|x2= <code>_myTruck [[setVariable]] ["myLocalVariable", ["321", _var], [[false]]];</code>
-|x3= <code>[[missionNamespace]] [[setVariable]] ["myName", "KK"];
-[[hint]] myName; {{cc|KK}}</code>
-|x4= Get current value of a variable and if it is undefined, define it and get the defined value:<code>[[private]] _var = [[missionNamespace]] [[getVariable]] "varName";
 [[if]] ([[isNil]] "_var") [[then]]
 {
-	[[missionNamespace]] [[setVariable]] ["varName", 123];
 	_var = 123;
+	[[missionNamespace]] [[setVariable]] ["varName", _var];
 };
 {{cc|_var here will contain current value of the variable varName}}</code>
+|x5= Unset <tt>_myTruck</tt>'s <tt>TAG_myPublicVariable</tt> variable globally:
+<code>_myTruck [[setVariable]] ["TAG_myPublicVariable", [[nil]], [[true]]];</code>
 |seealso= [[getVariable]], [[allVariables]], [[setFSMVariable]], [[Multiplayer Scripting#Join In Progress|Multiplayer Scripting]]