---
name: "setTriggerArea"
type: command
status: ok
groups: ["Triggers"]
arma3_since: "0.50"
locality: {"argument": "global", "effect": "local", "server_exec": false}
source: https://community.bistudio.com/wiki/setTriggerArea
revid: 364460
updated: 2024-05-16T20:41:48Z
---

# setTriggerArea

*Command · Triggers · Arma 3 v0.50 · introduced in Operation Flashpoint: Elite v1.00*

Locality: arguments **global** · effect **local**

## Description

Defines the area monitored by the given trigger. The area could be either rectangular or elliptical.

> [!NOTE]
> Just like with a and b dimensions, c dimension will alter area in opposite directions from the trigger position along z axis. Therefore if the trigger position is on the surface, half of the trigger area will be above the surface and half below. To place the whole area above the surface, adjust trigger position (move it up c meters). If c is not specified or <= 0, the trigger's height is considered infinite like 2D triggers.

## Syntax

```sqf
trigger setTriggerArea [a, b, angle, isRectangle, c]
```

**Parameters:**

- `trigger`: [Object](../topics/Object.md) - object of the type "EmptyDetector"
- `a`: [Number](../topics/Number.md) - trigger area X size / 2, in meters
- `b`: [Number](../topics/Number.md) - trigger area Y size / 2, in meters
- `angle`: [Number](../topics/Number.md) - trigger area rotation in degrees
- `isRectangle`: [Boolean](../topics/Boolean.md) - [true](../commands/true.md) if rectangle
- `c`: [Number](../topics/Number.md) - (Optional, default -1) trigger area Z size / 2, in meters. -1 for infinite height *(since arma3 1.60)*

**Returns:** [Nothing](../topics/Nothing.md)

## Examples

### Example 1

```sqf
_trigger setTriggerArea [100, 50, 45, false];
```

### Example 2

```sqf
_trigger setTriggerArea [100, 50, 45, false, 100];
```

### Example 3

```sqf
_trg = createTrigger ["EmptyDetector", getPos player, false];
_trg setTriggerArea [5, 5, 0, false];
_trg setTriggerActivation ["CIV", "PRESENT", true];
_trg setTriggerStatements ["this", "hint 'Civilian near player'", "hint 'no civilian near'"];
```

## See also

[triggerArea](../commands/triggerArea.md) · [createTrigger](../commands/createTrigger.md) · [setTriggerActivation](../commands/setTriggerActivation.md) · [setTriggerStatements](../commands/setTriggerStatements.md) · [setTriggerText](../commands/setTriggerText.md) · [setTriggerTimeout](../commands/setTriggerTimeout.md) · [setTriggerType](../commands/setTriggerType.md) · [inArea](../commands/inArea.md) · [inAreaArray](../commands/inAreaArray.md) · [triggerInterval](../commands/triggerInterval.md) · [setTriggerInterval](../commands/setTriggerInterval.md) · [enableSimulation](../commands/enableSimulation.md) · [simulationEnabled](../commands/simulationEnabled.md)

<sub>Source: [BI Community Wiki — setTriggerArea](https://community.bistudio.com/wiki/setTriggerArea) (revision 364460).</sub>