using UnityEngine;
using System.Collections;

public class Driver : MonoBehaviour {

private WheelCollider[] wheels;
public float maxAngle = 30;
public float maxTorque = 300;
public GameObject wheelShape;
public bool drive;
public float angle,torque;

// here we find all the WheelColliders down in the hierarchy
public void Start()
{
wheels = GetComponentsInChildren<WheelCollider>();

for (int i = 0; i < wheels.Length; ++i)
{
var wheel = wheels [i];

// create wheel shapes only when needed
if (wheelShape != null)
{
var ws = GameObject.Instantiate (wheelShape);
ws.transform.parent = wheel.transform;
}
}
}

public void Update()
{

if (drive) {
angle = 0;
torque = 100;
}

// angle = maxAngle * Input.GetAxis("Horizontal");
// torque = maxTorque * Input.GetAxis("Vertical");

foreach (WheelCollider wheel in wheels)
{
// a simple car where front wheels steer while rear ones drive
if (wheel.transform.localPosition.z > 0)
wheel.steerAngle = angle;

if (wheel.transform.localPosition.z < 0)
wheel.motorTorque = torque;

// update visual wheels if any
if (wheelShape)
{
Quaternion q;
Vector3 p;
wheel.GetWorldPose (out p, out q);

// assume that the only child of the wheelcollider is the wheel shape
Transform shapeTransform = wheel.transform.GetChild (0);
shapeTransform.position = p;
shapeTransform.rotation = q;
}

}
}

public void button() {
drive = !drive;
}

}