我想添加一个辅助我的抓钩，因为它有点难以瞄准它，并得到它的权利，我希望它捕捉到最接近的可抓取对象（如卡尔森）控制器是基于刚体的抓钩代码：

public class GrapplingGun : MonoBehaviour {
private LineRenderer lr;
private Vector3 grapplePoint;
public LayerMask whatIsGrappleable;
public Transform gunTip, camera, player;
private float maxDistance = 100f;
private SpringJoint joint;
void Awake() {
    lr = GetComponent<LineRenderer>();
}
void Update() {
    if (Input.GetMouseButtonDown(0)) {
        StartGrapple();
    }
    else if (Input.GetMouseButtonUp(0)) {
        StopGrapple();
    }
}
//Called after Update
void LateUpdate() {
    DrawRope();
}
/// <summary>
/// Call whenever we want to start a grapple
/// </summary>
void StartGrapple() {
    RaycastHit hit;
    if (Physics.Raycast(camera.position, camera.forward, out hit, maxDistance, whatIsGrappleable)) {
        grapplePoint = hit.point;
        joint = player.gameObject.AddComponent<SpringJoint>();
        joint.autoConfigureConnectedAnchor = false;
        joint.connectedAnchor = grapplePoint;
        float distanceFromPoint = Vector3.Distance(player.position, grapplePoint);
        //The distance grapple will try to keep from grapple point. 
        joint.maxDistance = distanceFromPoint * 0.8f;
        joint.minDistance = distanceFromPoint * 0.25f;
        //Adjust these values to fit your game.
        joint.spring = 4.5f;
        joint.damper = 7f;
        joint.massScale = 4.5f;
        lr.positionCount = 2;
        currentGrapplePosition = gunTip.position;
    }
}
/// <summary>
/// Call whenever we want to stop a grapple
/// </summary>
void StopGrapple() {
    lr.positionCount = 0;
    Destroy(joint);
}
private Vector3 currentGrapplePosition;
void DrawRope() {
    //If not grappling, don't draw rope
    if (!joint) return;
    currentGrapplePosition = Vector3.Lerp(currentGrapplePosition, grapplePoint, Time.deltaTime * 8f);
    
    lr.SetPosition(0, gunTip.position);
    lr.SetPosition(1, currentGrapplePosition);
}
public bool IsGrappling() {
    return joint != null;
}
public Vector3 GetGrapplePoint() {
    return grapplePoint;
}

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