Urban Patrol Script

Downloadable Versions

Armed Assault [1.8.2] (requires patch 1.05!)

Last Update:

• Infantry units will not try to cross waterways anymore
• Automatic detection of rotated markers
• Constant marker monitoring
• Enhanced AI when encountering enemy vehicles
• Random positioning of vehicles
• Added demo missions

Allows easy creation of randomly patrolling units, with improved AI behaviour.

Setting up a scenario with this script requires only four basic steps:

Create a marker that covers the active area (this is where the AI will patrol).
Place one or more enemy units (or groups) on the map that call the patrol script.
Put in your player's unit/group.
And that's it...

Here's a quick walkthrough for setting up a basic mission:

Some of the features and advanced customization options that are available:

Setup Options

Patrol any "marker-designated" area with any unit or group, whether it's Infantry, Armored, Cars, or Choppers, using any side (east, west, resistance, civilians).
Several independend marker areas (for different units) can be used on the same map. These areas can overlap.
The start position of the units can be a random position anywhere in the active area - in that case some units may even end up on roofs.
You can create a random number of "clones" of a unit/group you placed in the active area.
Patrolling units can be stopped or started at any time, and patrolling areas can be moved during the game.

AI Behaviour

The AI will avoid "dangerous" areas, and react intelligently to attacks.
If it sees a team-member being shot, or spots an enemy without themselves being detected, it will not continue on its regular path, but instead use a flanking approach to get close to the shooter. The accuracy of the approach will depend on the "knowledge" the AI has about the shooter (i.e. whether the shooter was actually seen or only heard).(image)
If AI units get stuck (mostly due to bad pathfinding) they will try to free themselves after a while.
Units will make occasional stops of random lengths during their patrols.
Independent AI groups will share their knowledge about any enemies that have been spotted.
By default units patrol in "safe" mode at "limited" speed.

Intel Options

A trigger can be generated for each patrolled area to announce when that area is cleared of enemies. (image)
The units can be tracked via a dynamic marker on the map. (image)
The marker that designates the active area can be hidden or displayed.

Examples of what the patrolling paths of the units look like, and how the improved AI behaviour works.
A car (green) and infantry unit (blue) patrolling Paraiso for about 15 minutes:

AI behaviour after enemy encounter (green path, notice flanking move) :

Setup in Editor One AI unit (which will be cloned into random positions a few times), the player, and the area marker.	In-game, after about a minute. The red paths indicate the AI movement.	Player is a sniper in the North. After firing at the AI for a few times, he is then approached via various flanking paths.

Another example of a flanking approach by an AI unit, after being fired at with a silenced gun.
Notice the use of cover during the approach.

Simplified Breakdown of Flanking Process:

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