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SweepTest(
Vector3 direction, out
RaycastHit hitInfo, float
maxDistance= Mathf.Infinity,
QueryTriggerInteraction queryTriggerInteraction= QueryTriggerInteraction.UseGlobal);
Parameters Parameter Description direction The direction into which to sweep the rigidbody. hitInfo If true is returned,hitInfo will contain more information about where the collider was hit (Additional resources: RaycastHit). maxDistance The length of the sweep. queryTriggerInteraction Specifies whether this query should hit Triggers. Returns
bool True when the rigidbody sweep intersects any collider, otherwise false.
DescriptionTests if a rigidbody would collide with anything, if it was moved through the Scene.
Tests if a rigidbody would collide with anything, if it was moved through the Scene. This is similar to doing a Physics.Raycast for all points contained in any of a Rigidbody's colliders and returning the closest of all hits (if any) reported. This is useful for AI code, say if you need to know that an object would fit through a gap without colliding with anything.
Note that this function only works when a primitive collider type (sphere, cube or capsule) or a convex mesh is attached to the rigidbody object - concave mesh colliders will not work, although they can be detected in the Scene by the sweep.
Additional resources: Physics.SphereCast, Physics.CapsuleCast, Rigidbody.SweepTestAll.
using UnityEngine; using System.Collections;public class ExampleClass : MonoBehaviour { public float collisionCheckDistance; public bool aboutToCollide; public float distanceToCollision; public Rigidbody rb;
void Start() { rb = GetComponent<Rigidbody>(); }
void Update() { RaycastHit hit; if (rb.SweepTest(transform.forward, out hit, collisionCheckDistance)) { aboutToCollide = true; distanceToCollision = hit.distance; } } }
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