getVariable: Difference between revisions

From Bohemia Interactive Community
Jump to navigation Jump to search
m (Text replacement - " *\| *([Cc]omments|COMMENTS|Game|[Gg]ame [Nn]ame|Game [Vv]ersion|Game Version \(number surrounded by NO SPACES\)|Multiplayer Arguments( \("local" or "global"\))?|Effects|Multiplayer Effects( \("local" or "global"\))?|Multiplayer Exe...)
m (Text replacement - "<h3 style="display:none">Bottom Section</h3> " to "")
Line 115: Line 115:
</dl>
</dl>


<h3 style="display:none">Bottom Section</h3>
[[Category:Scripting Commands|{{uc:{{PAGENAME}}}}]]
[[Category:Scripting Commands|{{uc:{{PAGENAME}}}}]]
{{GameCategory|arma1|Scripting Commands}}
{{GameCategory|arma1|Scripting Commands}}

Revision as of 02:16, 18 January 2021

Hover & click on the images for description

Description

Description:
Returns the value of variable in the variable space assigned to various data types. All available data types combinations:
Primary syntax (String) Alternative syntax (Array)
When variable is set on a Task, it is not actually set on the task itself, but on the FSM attached to the task.
If there is no FSM, getVariable will not work.
Arma 3
In the case of Alt Syntax usage in Arma 3, defaultValue will be returned if:
  • Requested variable is either undefined or nil
  • Variable namespace is null (objNull, grpNull, etc.)
Groups:
MultiplayerVariables

Syntax

Syntax:
varspace getVariable name
Parameters:
varspace: Namespace, Object, Display, Control, Group, Location, Task, Team Member, Display, Control
name: String - variable name that was defined in setVariable
Return Value:
Anything or Nothing if the variable doesn't exist

Alternative Syntax

Syntax:
varspace getVariable [name, defaultValue]
Parameters:
varspace: Namespace, Object, Display, Control, Group, Location, Task, Team Member, Display, Control
name: String - Variable name that was defined in setVariable
defaultValue: Anything - Value to return if variable doesn't exist
Return Value:
Anything - current value of the variable or defaultValue if the variable doesn't exist.

Examples

Example 1:
private _variable = myTruck getVariable "myVariable"; // returns nil if "myVariable" is not set
Example 2:
private _variable = myTruck getVariable ["myVariable", 50]; // returns 50 if "myVariable" is not set
Example 3:
Set damage of car0..car5 to 0: for "_i" from 0 to 5 do { _car = missionNamespace getVariable ("car" + str _i); _car setDamage 0; };
Example 4:
myMissionVar = 2015; missionNamespace getVariable "myMissionVar"; // returns 2015
Example 5:
WARNING when using dynamic default values as they always get evaluated: missionNamespace getVariable ["var", 123 call fnc_abc]; // fnc_abc is called every getVariable even if "var" is defined
Example 6:
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 { missionNamespace setVariable ["varName", 123]; _var = 123; }; // _var here will contain current value of the variable varName

Additional Information

See also:
setVariableallVariablesgetFSMVariable

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 August 13, 2016 - 17:13 (UTC)
Ebay
NOTE: Arma 2 ONLY! In Arma 3 this will return default value: Warning: the alternative syntax returns undefined when the varspace is an object and that object is null. Example:
_test = objNull getVariable ["test", "0"]; systemChat _test; Errors because _test is undefined. Tested in A2OA 1.63.131129
Posted on August 31, 2017 - 03:29 (UTC)
AgentRev
You can do typechecking using param: private _myVar = [player getVariable "myVar"] param [0, "", [""]]; and params: [player getVariable "myVar"] params [["_myVar", "", [""]]];