> For the complete documentation index, see [llms.txt](https://docs.miltechsimulations.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.miltechsimulations.com/miltech-mission-hub/detailed-documentation/map-objects/rectangle-trigger.md).

# Rectangle Trigger

A trigger based on a rectangular area in the world. You can set it to trigger when the player enters, is inside, or exits the area.

### Attributes

<table data-header-hidden data-full-width="false"><thead><tr><th width="109.99993896484375">Attribute</th><th>Description</th></tr></thead><tbody><tr><td><strong>Active On Start</strong></td><td><strong>Enabled:</strong> the trigger will start evaluating the trigger conditions as soon as the missions starts<br><strong>Disabled:</strong> you need to activate this trigger during the mission</td></tr><tr><td><strong>Fire Once</strong></td><td><strong>Enabled:</strong> the trigger will deactivate (stop evaluating) when it fires a connection for the first time<br><strong>Disabled:</strong> the trigger will keep firing the connected events until it is deactivated</td></tr><tr><td><strong>Length</strong></td><td>Length of the area in meters</td></tr><tr><td><strong>Width</strong></td><td>Width of the area in meters</td></tr><tr><td><strong>Orientation</strong></td><td>Heading of the area in true degrees north (not equal to magnetic north)</td></tr></tbody></table>

### Actions

<table data-header-hidden><thead><tr><th width="110">Action</th><th>Description</th></tr></thead><tbody><tr><td><strong>Activate</strong></td><td>The trigger start evaluating the trigger conditions</td></tr><tr><td><strong>Deactivate</strong></td><td>The trigger will stop evaluating the trigger conditions</td></tr></tbody></table>

### Events

The events are only fired when the trigger is active

<table data-header-hidden><thead><tr><th width="109.99993896484375">Event</th><th>Description</th></tr></thead><tbody><tr><td><strong>On Enter</strong></td><td>Fires when the player goes from outside to inside the area</td></tr><tr><td><strong>While Inside</strong></td><td>Fires when the player is inside the area (also if the player is already inside when the trigger is activated)</td></tr><tr><td><strong>On Exit</strong></td><td>Fires when the player goes from inside to outside the area</td></tr></tbody></table>

## See also

[Circle Trigger](/miltech-mission-hub/detailed-documentation/map-objects/circle-trigger.md)


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