Attach object at raycast.hit.

Unity Engine
1

Hi, I have a kinematic rigid body with boxcollider hoovering above ground layer controlled by a vehicle movement script.
I want to add wheels and thought it would be smart to shoot out ray from four courner objects attached as child of chassis box collider. Then attach wheel as child of object to be placed at ray hitpoint. Add max and min distance to ray and if no hit then lerp towards max distance if bottom of chassis pointing towards ground then lerp towards min ray distance if bottom of chasis is pointing away from ground. Then add spin and turn transform to wheels acording to relative velocity and turn angle. Actual turning is made in vehicle script. No torque or friction on wheels.

Would it be possible to add skidmarks at hitpoint if drifting?

lerp means go from one place to another with a smothe transition at a given rate?

2

Is it possible to attch object at point where ray hit a layer?

if ray lengt increase from one frame to another, make object moce at a selcted pase towards max ray length limit or until it reach point where ray hit trigger layer. make layer trigger?

3

I have this script to make ship hover above ground, but I want to be able to attach object of chice at hitpoint as shown in video below.

    //  Hover Force
    RaycastHit hit;
    for (int i = 0; i < m_hoverPoints.Length; i++)
    {
      var hoverPoint = m_hoverPoints [i];
      if (Physics.Raycast(hoverPoint.transform.position,
                          -Vector3.up, out hit,
                          m_hoverHeight,
                          m_layerMask))
        m_body.AddForceAtPosition(Vector3.up
          * m_hoverForce
          * (1.0f - (hit.distance / m_hoverHeight)),
                                  hoverPoint.transform.position);
      else
      {
        if (transform.position.y > hoverPoint.transform.position.y)
          m_body.AddForceAtPosition(
            hoverPoint.transform.up * m_hoverForce,
            hoverPoint.transform.position);
        else
          m_body.AddForceAtPosition(
            hoverPoint.transform.up * -m_hoverForce,
            hoverPoint.transform.position);
      }
    }

Jump to 5.55 in this videos and you can see that it is blue spheres at the ground where the ray hits if rayhit is within reach of max ray lengt. I want to replace thes blue spheres with object ofchoice and maybe offset it with wheel radius.