car game

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityStandardAssets.CrossPlatformInput;

public class MovingCar : MonoBehaviour
{
    public Text TxtSpeed;
    public WheelCollider front_left;
    public WheelCollider front_right;
    public WheelCollider back_left;
    public WheelCollider back_right;
    public Transform FL;
    public Transform FR;
    public Transform BL;
    public Transform BR;
    public float Torque;
    public float speed;
    public float MaxSpeed = 200f;
    public int Brake = 10000;
    public float coefAcceleration = 10f;
    public float WheelAngleMax = 10f;
    public float DAmax = 40f;
    public bool freinge = false;
    public GameObject BackLight;
    private void Start()
    {
        GetComponent<Rigidbody>().centerOfMass = new Vector3(0f, -0.9f, 0.2f);
    }
    void Update()
    {
        float Val_path = speed / MaxSpeed + 1.5f;
        speed = GetComponent<Rigidbody>().velocity.magnitude * 3.6f;
        TxtSpeed.text = "Speed " + (int)speed;

        //Acceleration
        if (CrossPlatformInputManager.GetAxis("Horizontal") > 0 && (speed < MaxSpeed))
        {
            if (!freinge)
            {
                front_right.brakeTorque = 0;
                front_left.brakeTorque = 0;
                back_left.brakeTorque = 0;
                back_right.brakeTorque = 0;
                back_left.motorTorque = CrossPlatformInputManager.GetAxis("Vertical") * Torque * coefAcceleration * Time.deltaTime;
                back_right.motorTorque = CrossPlatformInputManager.GetAxis("Vertical") * Torque * coefAcceleration * Time.deltaTime;
            }
        }
        if (CrossPlatformInputManager.GetAxis("Horizontal") == 0 && !freinge || speed > MaxSpeed)
        {
            if (GetComponent<Rigidbody>().velocity.y > 0)
            {
                back_left.motorTorque = -1000;
                back_right.motorTorque = -1000;
            }
            else
            {
                back_left.brakeTorque = 5000;
                back_right.brakeTorque = 5000;
            }
        }
        if (CrossPlatformInputManager.GetButton("Jump"))
        {
            freinge = true;
            BackLight.SetActive(true);
            back_left.brakeTorque = Mathf.Infinity;
            back_right.brakeTorque = Mathf.Infinity;
            front_left.brakeTorque = Mathf.Infinity;
            front_right.brakeTorque = Mathf.Infinity;
            back_left.motorTorque = 0;
            back_right.motorTorque = 0;
        }
        else
        {
            freinge = false;
            BackLight.SetActive(false);
        }
        if (CrossPlatformInputManager.GetAxis("Horizontal") < 0)
        {
            front_right.brakeTorque = 0;
            front_left.brakeTorque = 0;
            back_left.brakeTorque = 0;
            back_right.brakeTorque = 0;
            back_left.motorTorque = CrossPlatformInputManager.GetAxis("Vertical") * Torque * coefAcceleration * Time.deltaTime;
            back_right.motorTorque = CrossPlatformInputManager.GetAxis("Vertical") * Torque * coefAcceleration * Time.deltaTime;
        }

        float DA = (((WheelAngleMax - DAmax) / MaxSpeed) * speed) + DAmax;
        front_left.steerAngle = CrossPlatformInputManager.GetAxis("Horizontal") * DA;
        front_right.steerAngle = CrossPlatformInputManager.GetAxis("Horizontal") * DA;

        FL.Rotate(front_left.rpm / 60 * 360 * Time.deltaTime, 0, 0);
        FR.Rotate(front_right.rpm / 60 * 360 * Time.deltaTime, 0, 0);
        BL.Rotate(back_left.rpm / 60 * 360 * Time.deltaTime, 0, 0);
        BR.Rotate(back_right.rpm / 60 * 360 * Time.deltaTime, 0, 0);

        FL.localEulerAngles = new Vector3(FL.localEulerAngles.x, front_left.steerAngle - FL.localEulerAngles.z, FL.localEulerAngles.z);
        FR.localEulerAngles = new Vector3(FR.localEulerAngles.x, front_right.steerAngle - FR.localEulerAngles.z, FR.localEulerAngles.z);


    }
}