Car wheel not detecting ground

Questions & Answers
1

Hello, here’s my script that is attached to every wheel:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class check_ifgrounded : MonoBehaviour
{
    void OnCollisionEnter(Collision collision)
    {
        GameObject.Find("CAR").GetComponent<Driving>().wheels_grounded = GameObject.Find("CAR").GetComponent<Driving>().wheels_grounded + 1;
    }
    void OnCollisionExit(Collision collision)
    {
        GameObject.Find("CAR").GetComponent<Driving>().wheels_grounded = GameObject.Find("CAR").GetComponent<Driving>().wheels_grounded - 1;
    }
}

and that’s a problem: “wheels_grounded” value is always showing “0”, what I’m doing wrong?

2

One of the gameObjects that you are colliding with has to have a rigidbody attached to it in order to detect collisions.