AI : #5 – Wheel Control

In this episode we are going to make the wheels of our car to visually rotate and get positioned according to the situation.

Unity reference for :

• Raycast
• Wheel Collider
• Transform.Rotate()

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Script that was modified in this episode.

AIWheelScript

#pragma strict

var myWheelCollider : WheelCollider;

function Start () {

}

function Update () {
transform.Rotate(myWheelCollider.rpm/60*360*Time.deltaTime,0,0);
transform.localEulerAngles.y = myWheelCollider.steerAngle - transform.localEulerAngles.z;

var hit : RaycastHit;
var wheelPos : Vector3;

if (Physics.Raycast(myWheelCollider.transform.position,-myWheelCollider.transform.up,hit,myWheelCollider.radius + myWheelCollider.suspensionDistance))
wheelPos = hit.point + myWheelCollider.transform.up * myWheelCollider.radius;
else 
wheelPos = myWheelCollider.transform.position - myWheelCollider.transform.up * myWheelCollider.suspensionDistance;

transform.position = wheelPos ;
}