Physics.CapsuleCastAll

Parameters

Returns

RaycastHit[] An array of all colliders hit in the sweep.

Description

Like Physics.CapsuleCast, but this function will return all hits the capsule sweep intersects.

Casts a capsule against all colliders in the Scene and returns detailed information on each collider which was hit. The capsule is defined by the two spheres with radius around point1 and point2, which form the two ends of the capsule. Hits are returned all colliders which would collide against this capsule if the capsule was moved along direction. This is useful when a Raycast does not give enough precision, because you want to find out if an object of a specific size, such as a character, will be able to move somewhere without colliding with anything on the way.

Notes: For colliders that overlap the capsule at the start of the sweep, RaycastHit.normal is set opposite to the direction of the sweep, RaycastHit.distance is set to zero, and the zero vector gets returned in RaycastHit.point. You might want to check whether this is the case in your particular query and perform additional queries to refine the result. Passing a zero radius results in undefined output and doesn't always behave the same as Physics.Raycast.

Additional resources: Physics.SphereCast, Physics.CapsuleCast, Physics.Raycast, Rigidbody.SweepTest.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    void Update()
    {
        RaycastHit[] hits;
        CharacterController charCtrl = GetComponent<CharacterController>();
        Vector3 p1 = transform.position + charCtrl.center + Vector3.up * -charCtrl.height * 0.5F;
        Vector3 p2 = p1 + Vector3.up * charCtrl.height;

        // Cast character controller shape 10 meters forward, to see if it is about to hit anything
        hits = Physics.CapsuleCastAll(p1, p2, charCtrl.radius, transform.forward, 10);

        // Change the material of all hit colliders
        // to use a transparent Shader
        for (int i = 0; i < hits.Length; i++)
        {
            RaycastHit hit = hits[i];
            Renderer rend = hit.transform.GetComponent<Renderer>();

            if (rend)
            {
                rend.material.shader = Shader.Find("Transparent/Diffuse");
                Color tempColor = rend.material.color;
                tempColor.a = 0.3F;
                rend.material.color = tempColor;
            }
        }
    }
}