Class Sensor

Namespace: mobisim.Traffic

Physics-based proximity sensor that fires a OnDetected event for every collider that enters its configurable arc- or cone-shaped detection volume.

public class Sensor : MonoBehaviour

Inheritance

object→Object→Component→Behaviour→MonoBehaviour→Sensor

Remarks

Unity's built-in OnTriggerStay drives detection rather than per-frame raycasting, because colliders for vehicles and pedestrians are large and irregular — a single raycast can miss a car that is slightly off-axis. The sphere collider defines the outer radius; angle and height checks in Vector3) refine that into the actual arc shape without requiring a custom physics shape.

Three modes cover the main use cases: Pie_2D for top-down gap-keeping (ignores height), Pie_3D for stop-line detection (needs height to avoid triggering from underground geometry), and Cone for VR gaze-direction sensors.

The ignore list filters own-vehicle colliders and known non-obstacles from triggering false positives. Rigidbody-based comparison is used rather than direct collider comparison because a vehicle may have multiple child colliders sharing one Rigidbody.

Fields

OnDetected

Event triggered when a collider is detected.

[Tooltip("Event triggered upon detection of a collider.")]
public UnityEvent<Collider> OnDetected

Field Value

UnityEvent<Collider>

Properties

DefaultSearchAngle

Default detection angle set on Awake.

public float DefaultSearchAngle { get; }

Property Value

float

DefaultSearchRadius

Default detection radius set on Awake.

public float DefaultSearchRadius { get; }

Property Value

float

SearchAngle

Current detection angle in degrees.

public float SearchAngle { get; set; }

Property Value

float

SearchRadius

Current detection radius of the sensor.

public float SearchRadius { get; set; }

Property Value

float

Methods

IsPointInSenorView(Vector3)

Determines whether the given point lies within the sensor's detection cone or arc.

public bool IsPointInSenorView(Vector3 collisionPoint)

Parameters

Name	Type	Description
collisionPoint	Vector3	The point to evaluate.

Returns

bool — True if the point is within the sensor's view.