Rigidbody.SweepTest

Parameters

Returns

bool True when the rigidbody sweep intersects any collider, otherwise false.

Description

Tests 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.

See Also: Physics.SphereCast, Physics.CapsuleCast, Rigidbody.SweepTestAll.

#pragma strict
public var collisionCheckDistance: float;
public var aboutToCollide: boolean;
public var distanceToCollision: float;
public var rb: Rigidbody;
function Start() {
	rb = GetComponent.<Rigidbody>();
}
function Update() {
	var hit: RaycastHit;
	if (rb.SweepTest(transform.forward, hit, collisionCheckDistance)) {
		aboutToCollide = true;
		distanceToCollision = hit.distance;
	}
}

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;
        }
    }
}