nearestObject: Difference between revisions

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|gr1= Object Detection
|gr1= Object Detection


|descr= Returns the nearest object of given type (or inherited classes) to given position within a sphere. Hardcoded radius is 50 meters. Unlike with [[nearestObjects]], where distance is measured in 2D space, [[nearestObject]] will be closest object in 3D space.
|descr= Returns the nearest object of given type (or inherited classes) to given position within a sphere. Hardcoded radius is 50 meters.
Unlike with [[nearestObjects]], where distance is measured in 2D space, [[nearestObject]] will be closest object in 3D space.


{{Feature|informative|
{{Feature|informative|
* in {{ofp}}, only objects of the exact provided class are found.
* in {{ofp}}, only objects of the exact provided class are found.
* if an object ID is used ({{HashLink|#Syntax 4}}, see {{HashLink|#Example 2}}) the search range is unlimited
* if an object ID is used ({{Link|#Syntax 4}}, see {{Link|#Example 2}}) the search range is unlimited
}}
}}


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|p41= position: [[Position#Introduction|Position3D]] or [[Position#Introduction|Position2D]] - position to start search at
|p41= position: [[Position#Introduction|Position3D]] or [[Position#Introduction|Position2D]] - position to start search at


|p42= typeOrId: [[String]] - type of object (see [[typeOf]], [[CfgVehicles|class type]]) or Visitor id (see [[getObjectID]]) in string format (since Arma 3 v2.10)
|p42= typeOrId: [[String]] - type of object (see [[typeOf]], [[CfgVehicles|class type]]) or {{GVI|arma3|2.10|size= 0.75}} Visitor id (see [[getObjectID]])


|r3= [[Object]] - nearest object, [[objNull]] otherwise
|r3= [[Object]] - nearest object, [[objNull]] otherwise
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|r4= [[Object]] - nearest object, [[objNull]] otherwise
|r4= [[Object]] - nearest object, [[objNull]] otherwise


|x1= <code>_nObject = [[nearestObject]] [2345, 6789];
|x1= <sqf>
_nObject = nearestObject [<nowiki/>player, "StreetLamp"];</code>
_nObject = nearestObject [2345, 6789];
_nObject = nearestObject [player, "StreetLamp"];
</sqf>


|x2= Return the object with ID 123456:
|x2= Return the object with ID 123456:
<code>_nObject = [0,0,0] nearestObject 123456;</code>
<sqf>_nObject = [0,0,0] nearestObject 123456;</sqf>


|x3= <code>_nObject = getPos player nearestObject "StreetLamp";</code>
|x3= <sqf>_nObject = getPos player nearestObject "StreetLamp";</sqf>


|x4= Return the nearest object with ([[typeOf]] _nObject == "#XXXX") -> #mark, #slop, etc. Unlimited search range:
|x4= Return the nearest object with ([[typeOf]] _nObject == "#XXXX") -> #mark, #slop, etc. Unlimited search range:
<code>_nObject = _position nearestObject -1;</code>
<sqf>_nObject = _position nearestObject -1;</sqf>


Return the nearest object with ([[typeOf]] _nObject != ""). Search range is 50m:
Return the nearest object with ([[typeOf]] _nObject != ""). Search range is 50m:
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|x5= (See also [[allMissionObjects]]):
|x5= (See also [[allMissionObjects]]):
<code>_blood = [[nearestObject]] [<nowiki/>[[player]], "#slop"];
<sqf>
_step   = [[nearestObject]] [<nowiki/>[[player]], "#mark"];
_blood = nearestObject [player, "#slop"];
_track = [[nearestObject]] [<nowiki/>[[player]], "#track"];
_step = nearestObject [player, "#mark"];
_crater = nearestObject [<nowiki/>player, "#crater"];</code>
_track = nearestObject [player, "#track"];
_crater = nearestObject [player, "#crater"];
</sqf>


|seealso= [[nearestObjects]] [[nearObjectsReady]] [[nearObjects]] [[objectFromNetId]] [[nearEntities]] [[entities]] [[object]] [[nearestBuilding]] [[nearestTerrainObjects]] [[nearestMines]]
|seealso= [[nearestObjects]] [[nearObjectsReady]] [[nearObjects]] [[objectFromNetId]] [[nearEntities]] [[entities]] [[object]] [[nearestBuilding]] [[nearestTerrainObjects]] [[nearestMines]]
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|timestamp= 20190129153100
|timestamp= 20190129153100
|text= The ID for Syntax 4 may be dynamically obtained via the following (as of {{arma3}} v1.88):
|text= The ID for Syntax 4 may be dynamically obtained via the following (as of {{arma3}} v1.88):
<code>// returns Object Terrain/Visitor ID, or -1 if no ID found (invalid/null object)
(for {{arma3}} v2.10 or newer, use [[getObjectID]] instead)
[[cursorObject]] [[call]] {
<sqf>
[[private]] _obj [[=]] [[str]] ([[param]] [0, [[objNull]]]);
// returns Object Terrain/Visitor ID, or -1 if no ID found (invalid/null object)
[[private]] _id [[=]] -1;
cursorObject call {
private _obj = str (param [0, objNull]);
private _id = -1;


[[private]] _find [[=]] ((_obj [[find]] "#") + 2);
private _find = ((_obj find "#") + 2);
[[if]] (_find > 1) [[then]]
if (_find > 1) then
{
{
[[private]] _len [[=]] ((_obj [[find]] ":") - _find);
private _len = ((_obj find ":") - _find);
_id [[=]] _obj [[select]] [_find, _len];
_id = _obj select [_find, _len];
[[parseNumber]] _id;
parseNumber _id;
};
};
_id
_id
};</code>
};
</sqf>
}}
}}


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|user= blackfisch
|user= blackfisch
|timestamp= 20200212085500
|timestamp= 20200212085500
|text= Note, that if you want to check for the nearest Unit you have to check for {{ic|CAManBase}} instead of {{ic|Man}}, since {{ic|Man}} will also return any wildlife population in that area:
|text= Note, that if you want to check for the nearest Unit you have to check for {{hl|CAManBase}} instead of {{hl|Man}}, since {{hl|Man}} will also return any wildlife population in that area:


<code>nearestObject [player, "Man"]; // could possibly return rabbits or other wildlife
<sqf>
 
nearestObject [player, "Man"]; // could possibly return rabbits or other wildlife
nearestObject [player, "CAManBase"]; // only returns units
nearestObject [player, "CAManBase"]; // only returns units
</code>
</sqf>
}}
}}

Latest revision as of 19:21, 19 July 2024

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Hover & click on the images for description

Description

Description:
Returns the nearest object of given type (or inherited classes) to given position within a sphere. Hardcoded radius is 50 meters. Unlike with nearestObjects, where distance is measured in 2D space, nearestObject will be closest object in 3D space.
ⓘ
  • in Operation Flashpoint, only objects of the exact provided class are found.
  • if an object ID is used (Syntax 4, see Example 2) the search range is unlimited
Groups:
Object Detection

Syntax 1

Syntax:
nearestObject [position, type]
Parameters:
position: Object or Array format Position2D or Position3D - position to start search at
type: String - type of object (see typeOf, class type)
Return Value:
Object - nearest object, objNull otherwise

Syntax 2

Syntax:
nearestObject position
Parameters:
position: Array format Position2D or Position3D - position to start search at
Return Value:
Object - nearest object, objNull otherwise

Syntax 3

Syntax:
position nearestObject typeOrId
Parameters:
position: Position3D or Position2D - position to start search at
typeOrId: String - type of object (see typeOf, class type) or Arma 3 logo black.png2.10 Visitor id (see getObjectID)
Return Value:
Object - nearest object, objNull otherwise

Syntax 4

Syntax:
position nearestObject id
Parameters:
position: Array format Position2D or Position3D - position to start search at
id: Number - object Visitor id
Return Value:
Object - nearest object, objNull otherwise

Examples

Example 1:
_nObject = nearestObject [2345, 6789]; _nObject = nearestObject [player, "StreetLamp"];
Example 2:
Return the object with ID 123456:
_nObject = [0,0,0] nearestObject 123456;
Example 3:
_nObject = getPos player nearestObject "StreetLamp";
Example 4:
Return the nearest object with (typeOf _nObject == "#XXXX") -> #mark, #slop, etc. Unlimited search range:
_nObject = _position nearestObject -1;
Return the nearest object with (typeOf _nObject != ""). Search range is 50m:
_nObject = nearestObject _position;
Example 5:
(See also allMissionObjects):
_blood = nearestObject [player, "#slop"]; _step = nearestObject [player, "#mark"]; _track = nearestObject [player, "#track"]; _crater = nearestObject [player, "#crater"];

Additional Information

See also:
nearestObjects nearObjectsReady nearObjects objectFromNetId nearEntities entities object nearestBuilding nearestTerrainObjects nearestMines

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
Gnashes - c
Posted on Jan 29, 2019 - 15:31 (UTC)
The ID for Syntax 4 may be dynamically obtained via the following (as of Arma 3 v1.88): (for Arma 3 v2.10 or newer, use getObjectID instead)
// returns Object Terrain/Visitor ID, or -1 if no ID found (invalid/null object) cursorObject call { private _obj = str (param [0, objNull]); private _id = -1; private _find = ((_obj find "#") + 2); if (_find > 1) then { private _len = ((_obj find ":") - _find); _id = _obj select [_find, _len]; parseNumber _id; }; _id };
blackfisch - c
Posted on Feb 12, 2020 - 08:55 (UTC)
Note, that if you want to check for the nearest Unit you have to check for CAManBase instead of Man, since Man will also return any wildlife population in that area:
nearestObject [player, "Man"]; // could possibly return rabbits or other wildlife nearestObject [player, "CAManBase"]; // only returns units
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