Sensor 2D

The event trigger in the scene with 2D physics support.

For a good overview of sensors, you can take a look at the 'Sensors 2D.scene' file, which can be found in 'Assets\Samples\Starter Content\Scenes'.

Overview

The sensor allows you to select scene objects by a given volume or ray.

The parameter 'Source Data' indicates what type of objects will be determined: scene objects or physical bodies.

In order to see which objects the sensor has selected, you need to enable the 'Display Objects' parameter.

Properties

Name	Description
Source Data	What kind of data is used as a source of events.
Shape	The shape of the trigger.
Ray Target	The target by which the sensor ray will trigger.
Mode	The recognition mode of the sensor.
Filter By Type	The type of objects that sensor will recognize.
Collision Categories	The collision categories this fixture is a part of.
Collides With	The collision mask bits. This states the categories that this fixture would accept for collision.
Collision Group	Collision groups allow a certain group of objects to never collide or always collide. Zero means no collision group. Non-zero group filtering always wins against the mask bits.
Ignore Sensors	Whether the sensor is ignoring other sensors.
When Update	The update case mode of the sensor.
Display Color	The display color of the sensor.
Display Objects	Whether to draw gizmos on the objects recognized by the sensor.
Display Objects Color	The color of the recognized object gizmos.
Objects	List of objects recognized by the sensor.