---
name: "BIS_fnc_prepareAO"
type: function
status: ok
groups: ["Object Manipulation"]
arma3_since: "1.00"
locality: {"argument": null, "effect": null, "server_exec": false}
source: https://community.bistudio.com/wiki/BIS_fnc_prepareAO
revid: 325093
updated: 2022-07-01T12:24:49Z
---

# BIS_fnc_prepareAO

*Function · Object Manipulation · Arma 3 v1.00*

## Description

Spawns random patrols and/or vehicles in trigger areas with proper names. Side selected in the triggers "Activation" listbox will determine the side of the spawned asset(s).

Trigger **names** (a.k.a "Trigger text", **not** "Variable Name") defines the kind of spawn. Supported trigger names are:
- **GEN_infantry**: spawns random infantry patrol with sentry waypoints (**NOTE:** only circular triggers are supported, min. axis should be 500m)
- **GEN_patrolVeh**: spawns a random vehicle. If a civilian unit is synchronized with the trigger, its waypoint will be used by the spawned vehicle
You can specify the vehicle type by typing one of the following into the trigger's "On Act." field:
  - car
  - apc
  - tank
- **GEN_ammo**: spawns a random number of ammoboxes. You can get and idea of the shape this composition will have by making this trigger rectangular with dimensions 5m x 1m. You can also specify the amount of crates spawned by using min. and max. Timeout values (supported range is 1 to 6 crates).
- **GEN_civilCar**: spawns a random empty civil car

## Syntax

```sqf
density call BIS_fnc_prepareAO
```

**Parameters:**

- `density`: [Number](../topics/Number.md) - (Optional, default 1) enemy presence density index used for random footpatrols

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

## Examples

### Example 1

```sqf
0.75 call BIS_fnc_prepareAO;
```

### Example 2

```sqf
call BIS_fnc_prepareAO;
```

## See also

[BIS_fnc_spawnGroup](../functions/BIS_fnc_spawnGroup.md) · [createUnit](../commands/createUnit.md)

<sub>Source: [BI Community Wiki — BIS fnc prepareAO](https://community.bistudio.com/wiki/BIS_fnc_prepareAO) (revision 325093).</sub>